everything you need for your as textiles technology
TRANSCRIPT
Everything you need for your AS Food Technology Exam
Everything you need for your AS Textiles Technology Exam2014/15Contents:Fibre types: Source and classification of the main fibre groups Students should know the qualities of the fibres and understand how they affect the end use.
Natural fibresPlant/cellulose: cotton, linen, ramie eg high absorbency, tendency to crease, good strength, cool to wear.Animal/protein: wool, silk, hair, eg are absorbent, thermally insulating, can be difficult to care for especially wool because of the scales. Generally considered to be high quality fibres.Cellulosic fibres: cotton, linen, ramie, viscose share common features, such as high absorbency, poor resistance to shrinking and creasing, low thermal insulation qualities. Protein fibres have fairly similar properties, such as high absorbency, good thermal insulation.
Manufactured fibresRegenerated fibres: eg viscose, acetate, modal; these are weak fibres but the continuous filaments make them soft to wear, they are highly absorbent and crease badly. Outline knowledge of the process only detail and chemical formulae not required. Manufacturing should include reference to source, not chemical formulae, and basic knowledge of manufacture, eg carding of natural staple fibres before they are spun into yarns, wet spinning of regenerated fibres, melt spinning of synthetics gives very fine smooth continuous filaments.
Synthetic: (including microfibres): eg nylon, polyester, acrylic. These fibres are very strong, totally non-absorbent, smooth, lightweight, do not crease and are thermoplastic so can be heat-set. Elastomerics, eg Lycra, have high levels of stretch and snap-back qualities.PVC (Polyvinyl chloride) fabrics are waterproof, have good chemical and biological resistance and have a shine. PVC is often used to make imitation leather fabrics.Materials and Components:Commercial names of fibres and fabrics: Be aware of popular names of natural, man-made and synthetic fibres and fabrics, including Tactel, Lyocell, Tencel, Lycra, Polar Fleece and Trevira. Students should know which fibres they are made from and understand that the fibres have often been modified, or engineered from the standard form of the fibre to make them better suited to their typical end-uses.Contents:Materials and Components:YarnsCarding, spinning: Understand that fibres need to be made into yarns in order to hold them together so they can be manufactured into woven and knitted fabrics. Carding is necessary to align staple fibres (including filament fibres that have been cut down to staple lengths) before they can be spun together. The importance of twist in relation to strength and bulk of the yarn.
Yarn types: Knowledge of basic yarn types and how they influence the qualities of the fabrics made from them, eg staple yarns are made from staple fibres and filament fibres cut down to staple form. Filament yarns are made from continuous fibres; the main differences between single and plied yarns, textured and bulked yarns the reasons why yarns need to be textured and the use of thermoplastic qualities to add crinkles. Fancy yarns, eg boucle, slub, chenille, metallised yarns.
Blending and mixing of fibres: Basic knowledge of how fibres are combined together to make yarns; staple fibre blends including understanding that filament fibres need to be cut to staple lengths in order to mix them with other staple fibres, twisting together of different filament fibres to give multi-filament yarns, basic knowledge of core spun yarns which include elastomeric fibre.
Fabric manufacture Knowledge of the structure of the main construction methods and the differences between them. Students should be able to draw/describe and recognise the main structures. Understanding of the qualities given to the fabrics by the construction methods, including names and typical end-uses of a range of different fabrics, some examples are given below.
WovenPlain (Tabby) weave: Fabrics include calico, canvas, chambray, chiffon, chintz, flannel, lawn, muslin, organdie, poplin, sheeting, shirting, taffeta, voile, winceyette.Twill weaves: Fabrics include cavalry twill, denim, dogs-tooth check, drill, gabardine, herringbone tweeds, serge, and tartan.
Satin weaves: Fabrics include satin, sateen, duchesse satin, satin-back crepe, heavy bridal satins, lighter weight satins for linings and lingerie.
Pile weaves: eg cut pile. Fabrics include velvet, needlecord, and corduroy.
Loop pile: Fabrics include terry towelling. The fabrics listed above are some of the more common examples for each construction method. There is no expectation that all of them will be covered and teachers may choose to include other examples as appropriate.
Special effects achieved with coloured yarns, eg checks and stripes, gingham, tartan. Madras; Seersucker and blister effects; broderie anglais. Jacquard patterns, brocade. Effects with blended fibres, eg crinkle and permanent creasing, metallic fibres, fibres which absorb dye differently to give multi-coloured fabric. Boucl and crepe fabrics which use special yarns to give the desired effects in the fabrics.
Basic knowledge of how these effects are achieved, eg a simple gingham check fabric is made by arranging the warp threads in the loom in alternating white and colour blocks; the weft threads are woven in the same alternating white/colour blocks resulting in a white/colour square check pattern.
ContentsMaterials and Components:KnittedWeft knits: Fabrics include hand and machine knits, single jerseys (stockinette), double jerseys (interlock), rib knits, polyester fleece (has an extra yarn knitted into it and the fabric is then brushed on both sides to give a soft dense nap), Jacquard knits (complex patterns with different coloured yarns).
Warp knits: Fabrics include tricot, velour.
Non-wovensProduction of felts and bonded fabrics. Importance of scales of wool fibre in producing wool felt. Understanding that non-wovens are produced directly from fibres. Outline knowledge of webproduction and bonding methods to make fabrics.Typical applications for bonded and felted fabrics including implications of a lack of strength andgrain.New developments involving non-woven fabrics, eg flame retardant fabrics, the use of carbonfibres for military and filtration fabrics, fabrics used for insulation and decoration of car interiors,Tyvek used in buildings, fabrics impregnated with beneficial chemicals such as those used inbandages and wound dressings.These examples are included to exemplify some different uses for non-woven fabrics; the list is notintended to be prescriptive or exhaustive.Smart materials created to provide specific propertiesStudents need to understand what is meant by a smart material and be aware of a range of typicalapplications, eg heat reactive, fabrics developed for health and safety applications, performancefabrics.
Fabric finishesKnowledge of the effects of finishes and the reasons they are needed in relation to the
fibre/fabric properties and end use of the product. Types of finish in common use.Detailed knowledge of the chemicals involved and methods of application is not required.Typical finishes include brushing, calendering, flame retardancy (Proban, Pyrovatex used on cottonfabrics), water resistance, non-iron/crease resistance, stain resistance (Teflon), shrink resistanceand heat setting (to give permanent pleats or crinkles, non-crease, and non-shrink).
Surface decorationDyeing; domestic and industrial methods (vat, discharge and resist, eg tie-dye, batik), stages atwhich dye is applied (fibre, yarn, fabric, finished product), dye fastness different types and whythey are needed. Outline knowledge only; eg when resist dyeing the fabric is printed withchemicals which prevent dye being taken up in the chemically treated areas.ContentsMaterials and Components:Product componentsStudents should have knowledge of a variety of components and their appropriateness for a range of products in relation to the end-user, fabric and design considerations.
FasteningsIncluding buttons with buttonholes/loops, zips, poppers, clips, buckles, clasps, Velcro, D-rings, hooks and eyes, fabric and ribbon ties. Reasons why they are used and typical applications.
TrimsIncluding braids, ribbons, piping, edgings, petersham, bindings, fringing, lace, beads, sequins, diamantes, motifs. Reasons why they are used and typical applications.
ThreadsIncluding sewing threads (eg polyester and cotton machine thread, buttonhole thread),embroidery threads (eg stranded embroidery, Madeira/viscose machine embroidery),special effect threads (eg metallic, glow-in-the-dark, multi-coloured). Choice and application according to desired effect/end product.
Working properties of fibres and fabricsKnowledge and understanding of the properties of fibres and fabrics and their physical characteristics in relation to their choice for various design solutions. Students should have an understanding of basic principles underlying many fabric qualities, eg trapped air acts as an insulator, air supports combustion, smooth fibres and fabrics reflect light better than those with texture, fabrics containing non-absorbent fibres can wick moisture if there are air spaces, synthetic fibres are thermoplastic so can be heat-set. Students need to have an understanding that the fibre content and yarn/fabric construction play a part in the overall qualities of the fabric.
Fibre propertiesStrength, extensibility, elasticity, fineness, electrostatic charge, lustre, thermal insulation, flammability, moisture absorption, shrinkage.Students should be able to make reference to typical fibres and implications for end-use. This is a development of knowledge about fibre types and is about applying knowledge to end-use.
Fabric qualitiesStrength, durability, elasticity, flammability, thermal qualities, creasing, absorption, stretch, formability, handle, drape, weight, pattern repeat, directional pile, nap, texture, lustre. This includes reference to fabric construction as well as fibre/yarn content.
Testing of materialsExperience of basic testing to determine appropriate properties in relation to chosen end use, eg flammability, crease resistance, shrink resistance, colour fastness, strength, pilling. Awareness of fabric testing undertaken in industry outline knowledge only. Awareness that fabrics are tested before their selection for a particular application. An example of this might be the use of special machines which can repeatedly and consistently rub a fabric to check how quickly it wears into a hole or starts to pill.
Manipulating and combining materialsUnderstand the need to combine materials and have outline knowledge of the main methods used.
Mixtures, blends and laminatesFibre content, properties of fabric in relation to different fibre content and percentages. Typical blends and applications. Reasons for use including applications for specific products. Laminates, eg Gore-Tex, Sympatex. Basic understanding of how they work, eg laminates such as Gore-Tex are membrane systems with two or more layers held together with adhesive or thermoplastic fibres. They are able to prevent water and wind from penetrating whilst allowing perspiration to escape. They are used for outdoor clothing, particularly for extreme conditions. Lace fabrics are often backed by a woven fabric to give them stability these are also laminated fabrics.
Combining materialsInterfacings (eg as used to strengthen, stiffen, shape, prevent stretching of main fabric), underlinings (eg as used to strengthen, reduce transparency, thicken main fabric), linings (eg as used to add warmth, cover construction, aid wear, decorate products), interlinings (eg as used to aid insulation of product). Types and applications in relation to fabric weight and construction, and end use of product, eg a non-woven iron-on interfacing gives a crisp finish on the collar of a shirt, polyester satin linings are slippery so help the wearer put on and remove a jacket.ContentsDesign and Market Influence:History of designStudy to include some of the major developments of design throughout the nineteenth and twentieth centuries. Some examples include Op-art, art nouveau, Pop-art, Bauhaus, psychedelic, minimalism, effects of ethics and environment, punk but centres are free to choose other major design developments from the 19th and 20th centuries. Students should have an awareness of how various developments affected fashion and textile design. Understanding of influences on aesthetic attitudes to style and fashion up to the present day. The most important examples include the impact of womens emancipation, world events such as war, rise of youth cultures and disaffection, technological developments, music and media, royalty and celebrities, leisure activities, ethical and environmental considerations. Students should have some knowledge of how some of these influences have impacted on fashion this will be a foundation for study of fashion influences at A2 level.
Product evolution and product analysisA study of manufactured products to illustrate the way in which the demands of a product have evolved as a result of new materials and technologies. Some examples include the introduction of regenerated and synthetic fibres during 20th century, development of fabric finishes and smart materials, new methods of manufacturing clothing and textile materials, including mass production as opposed to bespoke, automated manufacture including CAD and CAM, new decorative techniques such as laser printing, developments in the care of textiles. Students should consider how textiles and products have developed during the 20th and 21st centuries in order to fully understand where current products have come from. Schools/colleges are free to choose other important developments. Appraisal of functional, aesthetic, technical and economic considerations in the design and manufacture of products, eg analysis of a range of existing products to consider the design, materials used, requirements of typical end users, manufacturing methods, care of the product, ethical issues. Consideration of aspects of physical surroundings as shaped by designers, craftsmen and technologists. For example, interior textiles in the home and public buildings.Design in practice
Design methodologyAnalysis, research, inspiration, idea generation, illustration, modelling, planning, evaluating and testing. Much of this will form the basis of coursework activities but students should also have formal knowledge of these design methodologies for Unit 1. It may include the use of trend forecasts, sales figures, moodboards, a study of existing products, the use of templates, using prototypes, samples and models to test and evaluate ideas, planning of work including the manufacture of products, testing and analysing finished outcomes and suggesting appropriate modifications and developments.
The role of the designerAn understanding of the varying roles of the commercial designer, eg responsibilities in relation to the client and end user of a product, budget, health and safety constraints, opportunities for innovative ideas. Exploring different approaches to designing. Understanding of manufacturing constraints on product design. An awareness of the environmental issues in relation to the design of textile products. Social and moral implications of product design.
Design sourcesCandidates should be able to respond to a variety of stimuli drawing from direct observation of natural and man-made forms, secondary sources in relation to specified design briefs.
Aiding the design processUse of inspirational moodboards, designer sketchbooks. Analysing working and aesthetic characteristics of a range of materials and surface decoration techniques. Understand industrial process used to produce these effects. Recognising design faults in existing products, eg through the analysis of existing products and the application of theoretical knowledge from Section A.
ContentsDesign and Market Influence:Market researchClient profiling, identifying target market, consumer and product research, eg opinion polls and questionnaires. Printing (screen, roller, transfer, ink jet, stencilling). Outline knowledge of how they work; eg screen printing uses mesh screens through which the dye paste is pushed. A different screen is prepared for each colour in the design. Rotary screen printing and flat screen printing are variations of the same process. Embroidery (hand and machine), quilting (construction of quilted fabrics, reasons for use).
The marketing functionCustomer identification. An awareness of the use of new technology in the marketing of textile products. This should include developments throughout the 20th and 21st century including the rise of fashion magazines, radio and television advertising, the internet, mobile phone applications, special promotions. Product costing, calculation and profit. Presentation of colourways.
Product life cyclesUnderstanding the expected life cycle of products, eg in relation to intended use, fashion seasons, cost.
Copyright protectionThe issue of copyright, patenting and their importance to the designer and manufacturer. Students should be aware of what is meant by copyright and patenting and implications for designers but do not need detailed knowledge of the copyright laws.
Communication methodsStudents should be able to communicate the detail and form of products, environments and systems so that they may be manufactured. They should be able to identify and use appropriate means to communicate ideas, design proposals and evaluations to a range of audiences, including clients and potential users of the product, eg presentation boards, fashion illustration, interior sketches, swatches, colourways. This terminology is used by professional designers and should be understood by students.IllustrationSelection and use of appropriate 2D/3D techniques, eg sketching, drawing, use of mixed media, collage.
EnhancementRendering use of line/tone/colour/form. Texture to represent materials, surface finishes and applied decoration Presentation two-dimensional and three-dimensional products.
Information drawingQuantitative graphs, pie charts, bar charts, pictograms Organisational and topological flow charts, sequential/schematic.
ModellingUsing three-dimensional form mock-ups, prototypes, scale models.
Use of ICTSelection and use of CAD, word processing/DTP, spreadsheets, databases and modelling software.
Design in the human context
Human needsDesigning to meet physiological, psychological and sociological needs of various groups of people, eg young, elderly, and physically handicapped in different environments and communities.
Human factorsErgonomic and anthropometric influences and constraints. The relationship between people, products and the environment.ContentsDesign and Market Influence:Health and safetyRisk assessment in relation to the design and manufacture of products. Safety standards imposed by The British Standards Institution (BSI), recommended by the Department of Trade and Industry (DTI) for product design. The work of the BSI in providing advice on the safety and other standards for a wide range of products. Students should have outline knowledge of the existence of different standards (eg with regard to the sizing of standard bedding, testing for colourfastness) but are not required to have knowledge of individual standards, for example, BS7907, 1997 relating to the safe design and manufacture of childrens clothing. Knowledge of the basic legal requirements relating to the flammability of textiles used for childrens nightwear, for furnishing products in public buildings, seating in the home, and the design requirements for childrens clothing. Recommendations for health and safety at work for employees and the implications for the employer. For information, the 4 main effects of The Health and Safety at work Act (1974) are;1. It makes employers criminally liable for failure to meet regulations.2. It set up the Health and Safety Executive (HSE) which is responsible for checking that the Act is being followed. HSE and local authority inspectors visit workplaces to make sure that health and safety regulations are being followed.3. It gives employees the right to be represented on health and safety matters.4. It places an obligation on employees to use safety equipment. The Act requires businesses to make a risk assessment of their activities. The company must appoint a Health and Safety officer who will check the workplace for possible risks, and put into place the necessary procedures and/or equipment to reduce risks for employees. Many chemicals are used in the textile industry, and these may be dangerous to health if not stored and used correctly. The Control of Substances Hazardous to Health (COSHH) Regulations (1994) form part of the risk assessment. All workplaces should appoint a person to be in charge of first aid and should have a clearly marked and well stocked first aid kit.Applications/material areasApparel fabrics to satisfy basic clothing requirements, eg protection, adornment, fashion, utility, sportswear (performance sport and leisurewear), footwear, accessories. Household fabrics, eg table/bed linen, furnishing accessories, furnishings, floorings. Industrial textiles, eg fire protective wear, components for vehicles/machines, automotive fabrics, tents, awnings, harnesses, medical textiles. Students should understand that textile materials are used in a wide variety of products and be able to refer to various materials in relation to the needs of the end user.
Environmental concernsUse of natural resources, materials utilisation, conservation, waste disposal/management, pollution in broad terms, recycling. Green technology, environmental problems. Students should have knowledge and understanding of the issues relating to the source (eg natural fibres compared with man-made fibres), manufacture and processing of fibres, fabrics and products (eg use of polluting machinery, water use, dyes, chemical finishes, energy use), transport (eg use of fossil fuels/nuclear energy, pollution from CO2/nuclear waste, impact on infrastructures), use and care (eg use of water, energy, detergents, chemicals to wash or dry clean, dry, bleach, iron products), and disposal of textile products. Students should be aware of developments aimed at minimising the environmental effects of textile manufacture and use.ContentsIndustrial and Commercial Practice:Manufacturing systemsOne-off (also called bespoke or job production), batch, mass/line production (sometimes called progressive bundle), vertical, in-house production. Understanding of the differences between them, the sort of products made using each system, the advantages and disadvantages. Pre-manufactured components, manufacturing specifications. Response to market demands (eg information collected through EPOS) Manufacturing sub-systems (sub assembly as a separate line of manufacture for certain parts of a product). Just in time production (JIT) includes stock control, manufacture of goods as and when needed, delivery of goods to retailer as needed.
ICT applicationKnowledge and understanding of CAD/CAM for designing and manufacturing processes, fabric production, pattern production, embroidery, and garment manufacture. Advantages and disadvantages of using CAD and CAM. CAD (Computer Aided Design); design of fabrics, products, colourways, product modelling pattern construction. Students should be able to give specific examples of where CAD could be used, eg when developing a print pattern for fabric, virtual modelling and prototyping. CAM (Computer Aided Manufacture); understanding of fabric manufacture, lay planning, computer controlled cutting, sewing, pressing, decoration. Students should be able to refer to specific processes used in the manufacture of textile products, eg automated buttonholing, the making and sewing of pockets, automated seam stitching. ICT used in the integration of manufacture (CIM). Students should understand that ICT is used to link the systems so that different automated systems can talk to each other and work together.
Pattern draftingBasic pattern/template drafting, including the knowledge and use of technical terms (basic block, labelling and notching, balance marks, seam allowance and ease). Students should be able to work from a set of basic block patterns (bodice front and back, sleeve, skirt and trouser front and back), developed for individual measurements or from commercial basic blocks. Principles of grading.
Basic adaptation to create unique individual styles manipulation of the basic templates to develop patterns as required. Moving of darts to create new fullness or shaping, creating yokes. The raglan, kimono and princess developments are not required.
Product manufactureFabric preparation, lay planning, marking and cutting out, methods of joining, shaping, finishing of edges, selection of construction techniques appropriate to the fabric being used and the product being made. Much of this knowledge will be developed through coursework activities and students should be given opportunities to work with a wide range of different products and materials. Areas not covered through coursework activities will need to be taught elsewhere. Pressing use of correct tools, eg iron, pressing cloth, needleboard for pile fabrics. Labelling and packaging; their functions, information typically found on labels including that required by law, and Quality Assurance symbols, eg wool mark, 100% cotton logo, Tencel logo, Teflon fabric finish logo. Environmental impact of packaging. To plan appropriate methods and processes for the manufacture of chosen products, including amendments and adaptations of prototypes and the use of industrial manufacturing processes.
Product maintenanceCare and maintenance of products. Information shown on care labels, including symbols used. Students should be able to recognise symbols in current use and understand what they mean. Relationship between care recommendations and fibre/fabric properties. This involves application of fibre and fabric knowledge to the recommended care.Environmental concernsAn awareness of the environmental issues in relation to fibre/fabric production and the dyeing of fabrics and piece goods, eg energy use, use and disposal of dyes, water use.
Health and safetyRisk assessment and health and safety issues related to the manufacture of textile products. For example, safety for the textile workers, such as the use of specific Personal Protective Equipment (PPE), guards on machines, lighting and ventilation in the factory.
Systems and control
Quality assurance and quality controlThe concept of quality assurance as an over-arching system of which quality control is a part. Quality control checks throughout the manufacturing process. This should include the different stages of manufacture when quality might be checked, specific examples of what the checker would be looking for, implications of not checking quality. Systems diagrams input, process, output. Loop feedback systems which ensure quality. For example, faulty stitching of seams can be due to faulty machine settings or inadequate training of machinists. Regular QC checks help identify the specific workstation producing the inferior stitching and the underlying problem can them be rectified. Awareness of quality and finish in the manufacture of own products.ContentsIndustrial and Commercial Practice:Section 1Materials and Components:Natural fibresKnowledge and Understanding AuditGo through the list of knowledge you need to learn for your exam. Rank from 1-5 on how well you know the topic.
1-2: is Very confident and could answer questions already.3-4: is needs a re-cap and then could have a go at answering questions.5: is I cant remember a thing and would freak if I had to answer a question!
What do you know about fibres already?1. In groups, brainstorm all of the information you can remember about fibres.2. Now write down as many questions or queries you have about the topic.What do you fell you still need to learn?The basicsManufactured FibresNatural Fibreshttp://www.fibersource.com/f-tutor/q-guide.htmCommercial names of FibresQuestion?????????????
Manufactured FibresWhat do these all have in common?
They all use Smart Fabric Technology
22Aim:To understand the creation and developments of modern materials, smart fabrics and performance textiles1 2 34 Smart materials provide specific propertiesWhat are the benefits and disadvantages of modern and smart textiles?The BIG ?Have an awareness of a range of smart fabricsKnow the commercial names of a range of smart fabricsUnderstand the uses of a range of smart fabricsKnow a range of finishes used for certain functionsDefinition:
Modern and smart fabrics are designed to maximise characteristics such as lightness, breathability, waterproofing etc, or to react to heat or light. They are usually manufactured using microfibres.It will be impossible to learn and remember all of the smart and modern fabrics developed to date but there are some key contenders you should remember for your exam.There are many areas of development within Textiles and they spread to a wide range of industriesSportswearFashionMedicineMilitaryAgricultureAerospacePoliceTransportProtective wearInteriors+ many many more
You should already be aware of some commercial names of smart fabricsCan you name any??????SportswearFashionMedicineMilitaryAgricultureAerospacePoliceTransportProtective wearInteriors+ many many more
KevlarTencelNomexMany developments today rely on blends so it is difficult to ignore products which include Lycra. This would be acceptable to discuss in an exam answer as long as you reference other smart fabrics with it.Some key definitionsModern MaterialsThis includes regenerated cellulose fibres Lyocell and Tencel, the synthetics fibres Kevlar and Nomex as well as Chlorofibre (PVC), Fluorofibre (PTFE) and Polyolefin (polypropylene).
These fibres have been engineered to produce fabrics with special properties.
Fibres can also be developed using blended Smart FabricsThey provide added characteristics such as breathable, waterproof and windproof.Some smart fabrics are said to be intelligent because they respond to the needs of the user and the environment. Can often incorporate microelectronics.Performance TextilesTextiles which relate to a products performance in a specific end-use. Performance textiles include products used for outdoor pursuits or sport.Industrial TextilesManufactured to meet specific technical requirements. Used for functional end-use in industry, either as part of an industrial process or incorporated into industrial products.Technical TextilesMainly for technical performance and finctional properties rather than aesthetics. Used for protective clothing, upholstery, furnishings, buildings, civil engineering, sports, leisure, agricultural, medicine and health care.The main reason for fabric innovation includes;Aesthetics handle, drape, softness, lustre, weight, texture, patternPerformance easy-care, stretch, shape retention, durability, waterproofingSpinning and weaving blended yarns (lyocell/lycra) or microfibresFinishing bio-stoning denim, using resin treatments, peach skin effectsGarment Finishing non-iron, easy-careWhen developing new smart materials a range of considerations have to be taken into account.For example; garments aesthetics, versatility, fashion and performance-in-useTask:You have been asked to design a range of protective clothing for the workers on a new building site.You need to consider the specification points for the wearer as well as the employerFor the user, the safety wear must be:
For the employer, the product must:For the user, the safety wear must be:
Highly visible FlexibleComfortable to wearEasy fasteningDurableWaterproofLightweightNon-flammableResistant to real life wear conditions (soiling, extreme heats etc)Attractive in style and colour
For the employer, the product must:Meet safety and performance requirements to the British and EU LegislationCarry the CE markProvide life long functional performance and be easy to maintainWithstand industrial washing at extreme temperaturesBe high qualityValue for moneyAvailable in a range of sizesProvide a quality design that promotes a corporate image
LyocellGeneric name for a high performance staple viscose fibre produced from renewable sources of wood pulp.It is environmentally friendly because it recycles non-toxic solvent amine oxide.Products made from Lyocell can also be recycled after use by incinerating, landfilled or digested in sewage.
In anaerobic digestion (sewage farm) the fibre degrades completely in eight days to leave only water and carbon dioxide. This is then used to power the sewage plant.
LyocellCharacteristicsFibrillationThe ability for fibres to split to give micro-fine surface hairs. Can be manufactured to suit different needs.
Surface effectsA variety of finishes can be applied ; dyeing, milling (rolling fabric to create a denser handle), sueding, sanding and brushingStrengthLyocell is stronger than other cellulose fibres including cotton and out-performs many types of polyesterAbsorbencyLyocell is easy-care, dyes well, has good wicking properties so is breathableDisposalTotally biodegradable and can be recycledVersatile fibre which can be used on its own or blendedLyocellEnd usesTechnical TextilesProtective clothingWorkwearCoated fabricsSewing threadsTentsfeltsNonwovensMedical wipes and dressingsWet wipesLeather substitutesFiltersinterliningsSpecial PapersTea bagsAir/smoke/oil/coffee filtersMap papersPrinting papersHigh-strength envelopes
TencelBrand name for a high performance viscose fibre, made from 100% regenerated cellulose from trees in managed forests.Similar to Lyocell in the way it is manufacturedIt is:Stronger than cotton when wet and dryEasy-care with very low shrinkageDurable, luxurious and practicalVery absorbent and breathableTotally biodegradable and recyclableWhen blended with fibres such as wool, linen, cotton or elestane Tencel provides enhanced softness, lustre, drape for clothing.
It can be woven or knitted and easily dyed or finished.
The fact that it fibrillates (splits) means it can look completely different ie looks like tough denim but feel like velvet
AramidGeneric name for a family of synthetic polymer fibres made from petro-chemicals.Expensive high tech aramid fibres can be engineered to produce woven, knitted, non-woven or cabled technical textiles, which provides high strength and heat resistance
KevlarBrand name for a family of aramid fibres which are high strength, lightweight, flame and chemical-resistant, flexible and comfortable.An important synthetic fibre because its unique properties make it suitable for a wide variety of industrial uses.5 times stronger than steel of an equivalent weight.Flexible, comfortable and chemical-resistant making it suitable for a range of protective wear. End uses:Bullet proof vestsHigh risk activity equipment hot air ballooningHigh-tension cables and ropes for bridgesGloves to protect against cuts and injuriesStrong, lightweight skis, helmets, tennis racquetsTyres, car hoses, aircraft structures and boatshttps://www.youtube.com/watch?v=J1KGFonmZzQNomexBrand name for a family of aramid fibres that are high temperature resistant.They have a unique combination of heat and flame resistance, durability, anti-static, low shrinkage, easy-care, comfort and aesthetic qualities.Resistant to most industrial oils, solvents and chemicals.Can be dyed easily and used for protection in iundustry for the Police, and armed forces, fire fighters and high risk sports.In motor sports Nomex is used for protective overals, underwear and head cover.https://www.youtube.com/watch?v=S0G6yMFN0REPolyvinylchloride PVCMade from petro chemicals
Can be manufactured as filament or spun fibres Can be manufactured as a coatingAdvantages:StrongFlexibleDurableBreathableEasy-careWaterproofInsulatorThermoplasticCan be blended
End usesRaincoats, shower curtains, floor coverings, architectural tyextiles, underwear, jumpers, hats, scarves, gloves, active wear, fleeceDisadvantage:Non-renewable resourcePolytetrafluoroethylene PTFE)Generic name for synthetic fluorofibre, made from petochemicalsHydrophobic Water hatingUsed in high tech fabrics such as Gore-Tex
Oleophobic Oil hating
TeflonBrand name for a high-performance fabric-care product made from PTFE.It protects fabrics and leather against water, stains and oil-based spills.Teflon works by surrounding each fibre with an invisible barrier so the fabric doesnt attract soiling or soak up wet stains.Safe, gentle, effective, water-based and CFC free so it doesnt harm the environment.Teflon coated fabrics are windproof, waterproof, stain-resistant, breathable and easy-care.Developed as part of the American space programmehttp://video.nationalgeographic.com/video/i-didnt-know-that/idkt-teflonGoretexBrand name for smart microporous membrane made from a composite of oil-hating substance and PTFEhttps://www.youtube.com/watch?v=5dqKe2IuNZshttps://www.youtube.com/watch?v=F9LoEMkl700https://www.youtube.com/watch?v=5pH2JVseKmsAim:To understand the creation and developments of modern materials, smart fabrics and performance textiles1 2 34 Smart materials provide specific propertiesWhat are the benefits and disadvantages of modern and smart textiles?The BIG ?Have an awareness of a range of smart fabricsKnow the commercial names of a range of smart fabricsUnderstand the uses of a range of smart fabricsKnow a range of finishes used for certain functionsExam Practice
5 marks
ASA2YarnsWhat will I learn today?Source and classification of main fibre groupsUnderstand the commercial names of fibres and fabricsKnow different types of yarns and processes usedClassification of fibresSourcePropertiesFinishing usedBlendsTypical fabricsEnd usesAftercareTask:Use the internet to complete this chart with information to use as a revision tool.Include commercial names too.
Stick in the samples of some of the fabrics.Complete for H/W
Q. ASWhat is the definition of a yarn?A yarn is defined as a fine continuous length of fibres or fillaments, with or without twist.
To be useful, yarns need to be strong enough to be made into fabric.
Fibres are generally produced by the process of spinning in to a variety of of different yarn types;Single, ply, cabled, corespun or a fancy yarn
Twist
Twist is put into yarns during spinning to make them stronger, so they are suitable for weaving and knitting.
Yarns can be spun clockwise (Z twist) and Anti clockwise (S twist)
Fabrics made from spun yarn are usually Z twist in the warp and S twist in the weft.
Light reflects in opposite directions creating a striped effect.Task:Investigate the different types of twisted yarns, recording appearance, texture, functions and products it could be used for.Give visual examples to prompt you when revising.
Question TimeASQuestion TimeA2
A2 Outside reading and research on:InorganicSpecial woven effects including plaids, tartans, brocades, doublecloth, pique, checks, madras and checks.Knitted stuctures plain, single, double jersey, pique, rib knits, jaqcuard knits, locknit, lace and net construction.
KnittedWovenWhat will I learn today?Understand how different fabrics are created using different techniques and processesIdentify different finishes used on fabrics and their purposeUnderstand the importance of function of different fabrics and their end useTask:Examine a selection of fabric samples.
Pull off a few of the warp and weft yarns
Cut two of the yarns to the same length and count the number of twists in each.
Feel the yarns and describe their properties.
Untwist the yarns and describe their structure. See if you can pull out a single fibre is it a staple or filament?
Try to decide if any of the yarns are made from blended fibres do all of the fibres look the same?
Make a record of your findings in your book.
WeavePlain weave the most used weave construction, provising endless design variations through using plain, thick and thin, coloured and fancy yarns.
It is hardwearing, strong and firm and used for lots of different types of fabric.Calico low cost cotton fabric made in different weights and lengths. Often used for toiles and experimental work.Voile is light weight and sheer made from cotton, silk, rayon, nylon. Used for blouses, dresses, childrens wear and curtains.There are many more different types of fabric which is produced using a plain weave. Investigate as many different types as you can, using your samples as examples.Sketch the design of the weave to identify what it is.
WeaveTwill Weave produces diagonal lines in the fabric, which usually run bottom left to top right on the fabric face.
Weaving twills in different directions produces fabrics with different patterns for example; herringbone or chevronTwill weave drapes well and is one of the most used weave constructions for denim and gabardine.Twill is used for products such as trousers, jackets, suits and curtains.Viyella is a 2/2 twill fabric woven from wool/cotton blend fibres in the warp and weft. 55% wool, 45% cotton and can be plain, checked or stripe.
WeaveSatin Weave warp faced, which makes it strong warpwise and drapes well.Has a smooth and shiny face and the weft shows only on the back. Used for curtain linings, evening wear, upholstery, ribbons and trims, depending on the fibre, for example; Cotton, polyester/cotton, acetate, polyester or silk.Sateen weft faced so that the warp shows only on the back. Often used for a base for more complex weave constructions such as a crepe.Damask more expensive mercerised cotton, which is sometimes used for tablecloths. The pattern is made by interchanging satin and sateen weave.
Plain Weave
Twill Weave
Satin WeaveWhat might I be asked in the exam?
6 marks
6= A5= B4= C3= D2= E1= FCotton is a strong fabric which would last a long time when worn by children. Cotton is also easy care and can be machine washed easily.Towelling is textured giving the garment a warm and comfortable handle.
What Grade would you give this answer?
6= A
A24= B5= A2= D3= C1= ESilk chiffon is a fine fabric which is translucent. A French seam could be used on the seams to create a neat finish. The fabric is delicate and would need care taken when cleaning.How many marks would you give this answer?
Now compare the two answers to see how they compare?WeaveTask- Now investigate and research the following weave structures in the same way;
Crepe fabricJacquardPile weavesNeedlecord and corduroyTerry towellingFabric MixtureColour woven Fabrics
Record the design, handle, properties and explain the end uses for the fabric.Non-WovenNon Woven FabricsNon - WovenFeltsBonded webbsWool feltNeedle feltAdhesive BondedThermally BondedSolvent BondedResearch Felt and Bonded webbs.Record the design, handle, properties and explain the end uses for the fabric.
Fabric FinishesAim:Have a knowledge of commercial and hand methods of finishing processes in TextilesThe BIG ?What suitable method of printing could you use for a womens cotton blouse?1. Be able to name and describe at least 1 commercial method of dyeing and printing 2. Understand a range of surface decorative techniques3. Have an understanding of a variety of finishes used in the textiles industryH/W: Due Mrs Temples lesson
Answer the exam practice questions
DyeingFabrics often need to be washed, bleached and dyed before being transformed into textiles productsBefore the fabric is dyed it is mercerised, which means the yarns treated to improve the strength, lustre and receptivity to dye.Commercial dyeingFabric can be continuous dyed or batch dyed.
Continuous Dyeing - https://www.youtube.com/watch?v=3Oau0QvCwOk
Batch DyeingFabrics are dyed to order in large batches according to the colours required.Batch dyeing is used for fabrics that have to change in colour due to high turnaround in fashion.
Hand Dyeing
Now experiment dyeing your own piece of fabricYou will need:GlovesCalico fabricWater based dyes NewspaperDrying rackPrintingThere are different types of printing;Block PrintingScreen printingIndustrial flat-bed screen printingRotary screen printing
Block printingCreated using metal or wooden blocks, one used for each colour.The background shapes are cut away to leave a raised design on the block (think of potato printing).Dye is applied and stamped onto the fabric.
It is a slow process and used by mainly specialist craft industries.Screen Printing (machine)Created by printing a pattern on to fabric by using a stencil held in place by a screen.Each screen prints out the design in one colour.Once printed the design must be fixed with steam or dry heat.
Manual screen printing is created by hand and is a longer process and used for bespoke or small runs.http://www.bbc.co.uk/learningzone/clips/indian-block-printing/917.htmlManual Screen printing
http://www.youtube.com/watch?v=6c_7AP7n7GAhttps://www.youtube.com/watch?v=yhH6eoCbXPQIndustrial Flat-bed screen printinghttps://www.youtube.com/watch?v=H0BSWp9BnTEFabric is moved through a machine on a conveyor belt and printed repeating very quickly.
https://www.youtube.com/watch?v=FCarXRadOnkRotary screen printingThis is created by using CAD and roller squeeges. One roller is used for each colour, making it a very fast and effective continuous printing method. Suitable for furnishing and clothing fabrics.
https://www.youtube.com/watch?v=R04Dbm3ZRAESurface decorationIn pairs/groups, create a list of all of the surface decoration techniques you can think of with a brief explanation of what they mean.Surface decorationAppliqueReverse AppliquePatchworkQuiltingMachine Embroidery
Surface decorationHand embroideryCAD/CAM embroideryBeadingShisha Mirrorwork
Surface decorationResist tie dyeingResist Batik
Task:
Create a design for a childrens wall hanging which uses at least 4 of the decorative techniques described in the lesson.
Use annotations to explain the techniques and how you have used them in your design. Complete for homework due in next lesson.Hand and Commercial ProccessesAS TextilesUnderstand, in depth, the preparing, Processing and Combining of materials
Be able to explain the properties of different processes and the reasons for use
Have a good understanding of which processes are suitable on a variety of fabricsWhat you will learn in this presentationMost widely produced and used natural fibreCotton plants need a tropical environment and climate to grow inHarvested by hand or by cotton harvesting machinesThe fibres are separated from the seeds by a process called GINNINGThe separated fibres are called LINT
Cotton ProductionPage 88 scanThe whole fleece is shorn from the sheep using electric shearsIts then graded into qualities of fineness, crimp, length, impurities and colourAbout 40% is the sheeps grease LANOLIN, dirt and burs it is removed by gently scouringVegetable matter is removed by using sulphuric acidThe fibres are then spun into fine, smooth yarn using the WORSTED process or into more coarse bulky yarns using the woollen process
Wool ProductionScan page 89 Scan page 90Woollen yarns are coarse, hairy, irregular, rustic appearance made from shorter staple fibres
Worsted yarns are smooth, uniform, regular, fine and lustrous made from longer types of staple fibresWool ProductionViscose is produced by using chemicals that cannot be recovered or re-used.
The raw material for VISCOSE is CELLULOSE extracted from eucalyptus, pine or beech wood chips
The cellulose is purified, bleached, pressed into sheets and dissolved in sodium hydroxide
It is then pressed again, shredded and aged
CARBON DISULPHIDE converts the cellulose into a fluid honey like liquid which extruded through a spinneret into a spinning bath
The cellulose solidifies and is drawn into filaments
Washed to remove the chemicals and lubricated for supleness, dried and wound onto spools as a filament viscose
Staple fibres are made by cutting the filaments into shorter lengths
Regenerated Fibre ProductionScan page 403 similar processes which all use a reservoir to hold the synthetic polymer, a metering pump, a spinneret, a fluid in which the filaments are formed and a take up mechanism which draws the filaments ready for windingThe spinneret size and shape together with the spinning and drawing processes determine the diameter of the filament.
Synthetic Fibre ProductionScan page 91Compare the manufacture of regenerated and synthetic fibres, noting any similarities and differences
Explain why woollen and worsted yarns have different properties
TaskUsed to improve the properties and appearance of the fibre typeIt can make it more cost effective to manufactureE.g. polycotton the polyester provides crease-resistance and the cotton is absorbentThey can give added comfort to a fabric
Blended FibresTask Suggest two different fibre blends suitable for workwear, justifying your choice
Discuss the benefits for a suiting fabric, of using a polyester/elastane/woolen blendFinishing is part of a quality assurance system to ensure that textiles:Meet quality requirementsAre fault-free and cleanMatch the manufacturing specificationAre safe for usersAre fit for the intended purposeFinishing Processes for Function and DecorationGives quality and added value to a productPhysical finishes provide aesthetic characteristics such as handle or drapeChemical finishes enhance functional or performance characteristics, such as waterproofing
There are 4 classes of finishing;Permanent chemical finish such as flame resistanceDurable, lasting the life of the product, like permanent pleatingSemi durable, lasting several launderings, like shower proofTemporary removed by laundering, like pressing or calendaring Reasons for finishingPictures of examplesCotton fabrics can be singed to remove short fibres protruding from the fabric. Makes the fabric smoother and reduces pilling
Scouring is a wash treatment to remove natural fats and waxes, dirt and oil. Washing also relaxes the fabric
Shrinking is a mechanical treatment to achieve dimensional stability so fabric wont shrink later on
Bleaching cellulose fabrics is a chemical process using hydrogen peroxide to destroy the natural colour for dyeing
Mercerising is a chemical process used for cotton yarn or fabric held under tension in a solution of caustic soda. causes fibres to swell and become rounder making textiles stronger and more lustrousPreparation Colouration TaskInvestigate the following techniques, creating a revision tool to share in class.
DyeingTie-dyeing BatikPrinting
Raising This is a technique used for brushing fabric, passing fabric over rollers covered in fine flexible wire brushes. This lifts the fibres from the fabric to form a soft fibrous surface called a NAP
IMAGE page 100Finishing Processes - Mechanical (physical)CalenderingFabric is passed between heated heavy rollers under pressure a bit like ironing
It;Smooth the surfaceImproves lustre and shineWater marked fabrics moire Embossed patterns
Scan page 101Chemical finishingLaminatingCombing two layers together, one must be a textile fabric
They are bonded by adhesives or by thermoplastic quality of one or other material
Iron on vilene van be bonded to another fabric to stiffen
Gore-tex can be laminated to any other fabric for use in all weather wear
Foam can be laminated to upholsteryGive three reasons why it is important to finish fabrics
Explain the difference between physical and chemical finishing with examples of how and why they are usedTaskvideoPrinting at LibertiesAppliqueBatikSilk paintingTie-dyeingPrintingEmbroideryQuiltingpatchworkDecorative and Stitch techniquesCreate a portfolio of samples to help you remember the techniques and processesSurface DecorationProduct ComponentsFibre PropertiesFibre Properties and Fabric CharacteristicsTesting MaterialsManipulating and Combining Materials
Gathering
Pleating
Using newspaper, create 5 different manipulated techniques which could be transferred to fabric
Investigation..Create a style book which investigates and researches different types of fabric manipulation.
Think about;Fabric choicesTechniquesFunctionsPropertiesUsesLinks to trends/designers/erasPractical taskUse your investigation research booklet to experiment recreating some of the techniques you have found.
Use newspaper and scraps of fabric to experiment with the samples.Document your samples with photographs or stick them into your booksSection 2Design and Market Influence:http://vintagefashionguild.org/fashion-timeline/
Fashion through the ErasBe able to identify different fashion from historical eras.
Make links between periods of fashion and past & present designers.Be able to discuss confidently in an exam question, justifying your answers/opinions with examples.
1890-1900s
1910-1920s
1920-1930s
1930-1940s
1940-1950s
1950-1960s
Punk 1980sMarie Antoinette Film cultureMarie Antoinette BustlesVolumeTartanCorsetry1800s influenceResearch into a chosen era. Make links between past and present designers and how different time periods have influenced their collections.You can also discuss how culture, media, music etc has also influenced their designs.
Show lots of examples with annotations. You could even sketch out some designs yourself.Try to link the research with your current coursework so you could use along side.Be creative in your presentation!Use the website to help you get started.
A2
12(2 x 9 marks)AS
Product evolution and product analysis
Product AnalysisStrengthsWeaknessesOpportunitiesThreatsPurpose?A starting point for a new design. It provides information about existing products to help develop new and improved ones to the market. Reasons to AnalyseProperties of materials used in existing productsQuality of design and manufacture of the productFitness for purposeWhy its selling/not sellingHow well a product meets requirementsDevelop new product designs based on changed or new British/international standardsDevelop product design specifications and design ideas for new productsFactors to considerAesthetic characteristics drape and handleFunctional requirements strength or water resistantScale of production justifyCost of fabrics and components in relation to qualityAvailability of a continuous supply for high volume production quality controlProduct Analysis gives the design the ability to make informed decisions when analysing a textile product. What questions should I ask?What is the fibre content?What is the fabric structure?Has a finish been applied during manufacture to enhance the properties?
Task:
Choose a product to analyse and create a report which would help you to create a detailed design specification for a new product.
Remember to look at:Aesthetic characteristics drape and handleFunctional requirements strength or water resistantScale of production justifyCost of fabrics and components in relation to qualityAvailability of a continuous supply for high volume production quality control
Remember!A design specification is a detailed list of criteria which your new product should meet.
Fabrics Used:BlendsStrengths/weaknessesReasons for useAesthetic appeal
Fabric Characteristics:SuitabilityPossible alternatives Strengths weaknesses
Trims and Components:FunctionsAestheticsStrengths/weaknessesScale of Production:One offBatchMass productionJustifications SuitabilityAlternatives with justifications
Cost implications:FabricsTrimsComponents Pros/cons Alternatives Production costs Care label:Easy/high maintenanceCostJustificationsAlternatives
Environmental Issues:Processes usedManufactureSustainable fabricsOrganicFair trade etc
Details of the product:Construction methodsSuitabilityAlternativesFunctional purposeAesthetics
Conclusion:A summary of your findings to help with writing a design specification for a new product.
TaskYou have been asked to write an essay/article for a fashion magazine about The work of past and present textile designers.The article must be 500words or more.
Discuss/explain:
How its related to textile and fashion products To include design movementsInfluences on product designTrendsStreet cultureMusic MediaWorld eventsHave an understanding of the developments of fashion in clothing, accessories and furnishings. Appreciate the influence and contribution of leading fashion and textile designers.Design methodology
The role of the designer
Design sources
Aiding the design process
Market research
The marketing function
Product life cycles
Copyright protectionThe doorstop design is copyrighted. Why is this important? ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (2 marks)
Aim:At the end of this section you will be able to answer this question.
Communication methods
Illustration
Enhancement
Information drawing
Modelling
Use of ICT
Human needs
Human factors
Health and safety
Applications/material areas
Environmental concerns
Section 3Industrial and Commercial Practice:Manufacturing systemsThe doorstop is in the shape of a caravan. The manufacturer wants to extend the range of these doorstops to include different forms of transport.
Using this page and the next page, show how you could modify the basic design shown on page 13 to make another doorstop in the range. Include information about fabrics, components and decorative techniques to be used.
8marksAim:By the end of this section you will be able to answer this question.QuestionThe skirt will be commercially manufactured using a sub-assembly system.Explain the reasons why sub-assembly systems are used in industrial manufacture. 6marks
Focus: The ways in which textile products are manufactured in industry.Processes and ManufactureContentThe production systems and their processes.The range of hand tools, equipment and machines used in textile production.CAD/CAMProduction FlowchartsQuality Control and Quality AssuranceThe production systems and their processes There are three main types of production system.One-offBatchMass
ObjectivesUnderstand what is meant by one-off, batch, and mass production.Understand line production and subassembly systemsConsider cost implications when selecting method of productionOne-offOne-off production is designing and making a single textile product to a client's specification. The garment design is developed from a basic block pattern, with a prototype made from inexpensive fabric to test the drape, fit and assembly of the garment.One-off Haute-couture fashion: models at London Fashion Week
TaskLook in magazines and cut out pictures to make a collection of designer outfits from catwalk shows. Why are these garments made by one-off production? How much do these clothes and accessories cost to buy?Batch ProductionBatch production is manufacturing set quantities of a textile product to order. The prototype is made up in a medium size from the intended fabric. The prototype is checked for quality of design and manufacture, then put into production in a range of standard sizes. The quantity of products can vary from a set of four cushions made by a designer-maker, to 20,000 jumpers made for a department store.
Mass productionMass production is industrial-scale manufacture of large quantities of products, usually on a production line. Mass production is suitable for products that seldom need to be redesigned and are needed in very large numbers, eg socks or jeans.
Production systemProduct marketDesign and production Skill level and costOne-offMade-to-measure, eg suit, wedding dress;Made-to-measure garments are made to fit the measurements of an individual client; the garment design is developed from a basic block pattern and a toile is made to test the fabric drape, the fit and order of assemblyVery high-level skills in design and manufacture; high-cost materials; high labour costsOne-offHaute Couture, eg made by fashion housesFashion designers such as John Galliano design Haute Couture garments for individual clientsVery high-level skills in design and manufacture; high-cost material and labour costsBatch productionReady-to-wear (RTW) designer label, eg Designers at DebenhamsGarments are designed to fit a range of standard sizes and shapes. Garment patterns are developed from a basic block using CAD. A sample garment is made up in a medium size, from the intended fabric. Once the design has been approved it is put into production in a range of standard sizes. They are sold through up-market retailers.High-level design, pattern making and sampling skills; cost-effective materials and lower manufacturing costsMass productionMass-market retailers, eg Top ShopSimilar production methods to batch production: garments produced in limited range of sizes; standardised production methods are used to produce a wide range of styles. Most fashion products are batch produced in large batches eg 20,000. Some classic products like jeans are mass produced for a world market.High-level design, pattern making and sampling skills; cost-effective materials; products often made overseas where labour costs are low Systems and sub-systems In a production system, a number of different designing and manufacturing processes or sub-systems take place at the same time. Examples of sub-systems are:
Lay-planning is the laying out of pattern pieces of a fabric to work out the quantity and cost of material required for a product.
Costing is working out how much each product costs in terms of including materials, labour, rent and energy costs.Just-in-time stock control (JIT) This is a cost effective method of ordering components and sub-assemblies to arrive just before they are needed. Stock storage time is reduced but any mistakes and deliveries will hold production up.SummaryHand-crafted, exclusive products are made individually using the one-off production system.For a fixed number of identical products, batch production is cost effective.Mass production usually includes production linesSubassemblies are made separately before they are joined to the main product.
The range of hand tools, equipment and machines used in textile production.
ObjectivesHave an understanding of the variety of machines used in textile manufactureAppreciate the difference between sewing and the embroidery machines.Plotter/Cutting machinesComputers are used for producing Lay plans which work out exactly where to place each pattern piece to best use the fabric. Remember wasted fabric is wasted money!
A plotter would mark out the pattern pieces and any construction instructions such as darts.
A CAM cutting machine automatically cuts out the pieces following the lay plan. It cuts the fabric quickly and accurately using vertical knives, high pressure water jets or lasers. Many layers can be cut out at once which means less labour costs and more efficiency
A Band saw can be used by a skilled operator. It is used for cutting through multiple layers of fabric quickly. Metal chain mail gloves are worn to protect the workers hands.
Sewing machines.
These range from simple machines to ones that do specialist tasks such as buttonholes, overlocking fabric edges or CAD CAM machines that stitch out motifsLockstitch Used for sewing seams (Straight stitch)Over lockerStitches, cuts and finishes seams in one processSeam coverUsed for sewing belt loopsAutomatic buttonholeUsed for sewing buttonholesCAD/CAMMultihead embroidery machine
Hand tools and equipmentTools & equipment for Designing, colouring and embellishingMeasuring and markingCuttingHeating and pressing Identify and make a list of all the tools and equipment in your textiles classroom
SummaryAppropriate tools and equipment should be selected, used correctly and safely, and stored in the designated place.A wide variety of tools and equipment are required when designing and makingEfficient and accurate use of tools and equipment will help ensure that high-quality products are made.
Industrial Machinery Below are some of the main types of machines used in the manufacture of textile products.ObjectivesHave an understanding of the variety of machines used in textile manufactureAppreciate the difference between sewing and the embroidery machines.
Digital jet printerKnitting machineBand sawMulti-head embroidery machineMachinery can be operated by hand, be semi-automatic fully automatic and can also be computer controlled
SummaryMachines speed up the process of making and can be used to ensure high-quality productsMany machines have fast moving parts and sharp needles. Great care must be taken to follow safety rules to avoid injury while operating such a machine.Machinery can be operated by hand, semi-automatic or fully automatic and can also be computer controlled.Industrial sewing machinesIn industry a range of different sewing machines are used for stitching seams, embroidery, buttonholes etc. The main ones are listed in the table below:Industrial machineMethod of controlJoining processUsed forLockstitchElectricLockstitchStraight seamsLockstitchElectricZigzag stitchStretchy knits; finishing edgesOverlockerElectricStitches, cuts and finishes seams in one process Non-fraying seams; stretchy seamsSeamcoverElectricFlat seamKnitted hems; belt loops on jeansLinkingElectronic; CAM Joins knitted fabric stitch by stitchKnitted seamsAutomatic buttonholeElectronic; CAM Lockstitch; chainstitchButtonholesComputer Numerically Controlled (CNC)Computer software; Electronic; CAMLockstitch; zigzag; embroideryMaking collars; labels; logos; embroideryExam TipsMake sure that you understand the different roles of clients, designers, manufacturers and users.You need to know what a production plan and work schedule are - and the difference between them. Make sure that you know the difference between one-off, batch and mass production. Production Plan Production planningProduction plans and work schedules are important planning tools in batch and mass production.The production plan should set out information about all the stages of production, so that every product is made to the same quality. See example below:Each production plan should include the following stages: The preparation stage details the amount of materials to buy-in, preparation of garment patterns, templates and lay plans. The processing stage details the fabric spreading, cutting, labelling and bundling of the fabric pieces. The assembly stage contains instructions for fusing, joining and pressing the separate product parts. The finishing stage gives instructions for decorative/functional finishing and final pressing. The packaging stage explains how to label, hang, fold, and cover the product ready for transport to the retailer.Some manufacturers use computer software to handle the detailed information in the production plan. Any changes made to the plan are quickly available to each member of the production team Work schedule A work schedule sets out instructions about the order of assembly, the stitch type, the processes to be used, the time each process will take and the seam allowance. See the example of a work schedule below:Work schedule below for a skirt
Order of assemblyStitch typeProcessProcess time in minutesSeamallowance1LockstitchStitch pockets2.001.00cm2LockstitchStitch pockets to front2.001.00cm3OverlockJoin back seam1.001.00cm4LockstitchInsert zip2.000.20cm5OverlockJoin side seams1.501.00cm6LockstitchJoin waistband to top2.500.60cm7Blind hemmingTurn up hem1.500.20cmN/AN/ATotal process time12.50N/AICT application
Aim:By the end of this section you will be able to answer this question.CADUSING COMPUTERS TO DESIGN AND PRESENTComputers are used by designers for:Writing documents and creating display boards, including artwork, text, spreadsheets, graphs and tablesPutting together slide show presentationsDigital photography and video makingDesigning and samplingSupplementing drawing and colouring with use of specialist fashion software, e.g. Speed Step. ObjectivesUnderstand the benefits of using computers in manufacturing.Appreciate the link between CAD & CAMPROGRAMMES USED BY DESIGNERS
These include:Microsoft Office - Word, Excel, PowerPoint, PublisherDrawing packages Paint, Adobe illustrator, CorelDrawImage editing PhotoshopSpecialist Fashion software, e.g. Speed StepDRAWING USING SOFTWAREDrawing software can be used to design, illustrate and show working drawings. Drawn lines and shapes or photographic images can be imported and edited, or scanned to manipulate and develop ideas. Collections with a range of coordinating products can be developed from one initial idea.With some specialist software it is possible to get a 3D impression of the design by rotating the design and seeing it from different viewpoints. The designer can use the computer to simulate draping and shadowing to create a realistic image of the design. Also, ideas for different colourways can be tested and a variety of printed, knitted or woven fabric designs can be trialled on screen, to see the effect of each different combination of colour and texture.USE OF ICT FOR PRESENTATION The designer can present ideas to the client on screen or printed on to presentation boards, or via e-mail, and then quickly modify them according to client feedback. Promotional material developed from design work can be adapted for use on websites, business stationery and advertising and marketing materials, such as point of sale literature and display posters. Computers make this development of related design work a quicker process DESIGNING AND SAMPLING USING COMPUTERS
Computers can be used to pass detailed design information to machinery quickly so that samples can be made during the design and development stages, often without the designers even leaving their workstations.Designers can use computers to design new woven or knitted fabrics on screen and then show the new fabric in use on a drawn model, on screen or on printed copy.Printed fabric design developed on screen can be digitally printed on to actual fabric for sampling.Embroidered motifs and patterns can be designed on the computer and then stitched directly onto fabric.A design process that previously took weeks or months can now take less than 24hrs. The images on colour monitors and those reproduced by colour printers are so realistic that they can be used to present ideas to fashion buyers. In the past buyers have demanded to see and touch actual sample garments, before deciding to place orders, but with the new computer technology they now have the confidence to buy from screened or printed presentations.ICT and CAMICT and computer-aided manufacture (CAM)ICT and CAM play a vital role in modern textiles production. For example, they enable :designs to be sent electronically to the print manufacturer and stored on computer to ease repeat printing orders. colours to be matched to the design, dyes weighed and dispensed and the fabric printed automatically ICT makes possible the just-in-time ordering of materials and components so they arrive at the factory as they are needed, ie just-in-time for production to start. ICT enables companies to transmit information between plants, and manufacture on a global scale
ObjectivesUnderstand the benefits of using computers in manufacturing.Appreciate the link between CAD & CAMSummaryComputers can be used to increase efficiency and accuracy in manufacturingCosts can be reduced if efficiency is increasedHealth and safety of workers can be monitored and working conditions made safer using computersFlexibility is increased as changes in production can be made more rapidly Mass-produced clothing: jeans in a clothes shop window
CNCComputer-numerical controlComputer-aided manufacturing involves the use of CNC machines for printing, cutting, joining and many other textiles processes. CNC-automated machines can repeat processes with accuracy and reliability, and are easily re-programmed when changes to design or production run are needed. The graphic shows some of the uses of CNC machines.
CIM Computer-integrated manufacturing (CIM) systems integrate or link CAD and CAM systems. These combined systems link design development, production planning and manufacturing systems together. Companies that use CIM are able to design a product in one country and manufacture it overseas where labour costs are lower.Pattern drafting
Aim:By the end of this section you will be able to answer this question.For this question you need to refer to Figures 1 6 on the insert sheet.In the space below, show how the templates (Figures 1 and 2) can be adapted to make a pattern for the fashion skirt (Figures 3, 4, 5 and 6).
8marksLesley CresswellPages: 106 - 107Pattern drafting
Figure 3 Front of fashion skirt
Figure 4 Back of fashion skirt
AS MarkScheme
A2 Question
A2 MarkScheme
Pattern DraftingBasic pattern/template drafting, including the knowledge and use of technical terms (basic block, labelling and notching, balance marks, seam allowance and ease). Students should be able to work from a set of basic block patterns (bodice front and back, sleeve, skirt and trouser front and back), developed for individual measurements or from commercial basic blocks. Principles of grading.
Task:Use the pattern pieces to identify the key terms and explain their functions.Sketch out the pattern pieces as a revision tool. Pattern Symbols
Useful websiteshttp://www.taunton.com/threads/pages/nmt037_31.asphttp://www.idiotsguides.com/hobbies-and-crafts/sewing/sewing-basics-how-to-read-and-interpret-pattern/https://textilesgillies.files.wordpress.com/2012/03/production__assembly_helpsheets.pdfhttps://www.youtube.com/watch?v=mTIp0b-RzPc
Skirt Pattern
Bodice Pattern
Trouser Pattern
Label the pattern pieces using the key terms and symbols
Product manufactureAim:By the end of this section you will be able to answer this question.Lesley CresswellPages:28-49 Product manufactureFabric preparation, lay planning, marking and cutting out, methods of joining, shaping, finishing of edges, selection of construction techniques appropriate to the fabric being used and the product being made.
Much of this knowledge will be developed through coursework activities and students should be given opportunities to work with a wide range of different products and materials.
Areas not covered through coursework activities will need to be taught elsewhere.
Pressing use of correct tools, eg iron, pressing cloth, needleboard for pile fabrics.
Labelling and packaging; their functions, information typically found on labels including that required by law, and Quality Assurance symbols, eg wool mark, 100% cotton logo, Tencel logo, Teflon fabric finish logo.
Environmental impact of packaging.
To plan appropriate methods and processes for the manufacture of chosen products, including amendments and adaptations of prototypes and the use of industrial manufacturing processes.
Lay Plans
DigitalLay Plan's that suit your every need.Gradeplan takes great pride in offering a lay planning service that is not only highly effective in saving you fabric, but is relevant to the ever changing and challenging demands of today's UK high street. More and more stripes, checks, border prints, placement prints and laces are being used, all of which require an engineered lay plan to ensure the finished garment reflects the designers original sketch.
CMT or FOB we will save you money.Gradeplan will work with you from the design stage to ensure absolute minimum wastageHighly efficient lay marker planning service available for plain, stripes, checks, placement prints and tubular fabricsLay markers planned according to customer specification sensitive to fabric type/width and cutting table lengthFull marker specification sheet produced with suggested optimum ply depth relative to order sizeCostings provided enabling accurate raw material purchase orderingProduction planning option available converting customer sales orders into detailed weekly cutting and dispatch plans
Have a go at making your own lay plan using pattern pieces and a table top/floor
AS Question A2 Question Discuss the ways in which a computerised lay plan system assists in the manufacture of batch produced suits made from a range of fabrics, including checks and stripes.(6 marks)Joining TechniquesLesley CresswellPages: 37-38 & 107- 109Seams are the fundamentals of sewing and there are many different types, the basic seams work well for most purposes but knowledge of others can help you to make a more professional job of a textiles product.
Before starting to join fabric and forming a seam, you have to know about the seam allowance, that is the space between the sewn line and the raw edge of the fabric. Many patterns allow for 1.5cm (1/4 inch) or 1cm, some even require 2cm and allow for trimming down afterwards - read pattern instructions carefully.
When sewing the seams on the machine, there is an additional guide on the machine throat plate, with incremental markings for you to guide the raw edge of the fabric in order to make seam a consistent distance from the edge.Hem finishesNeateningPinkedStitched and pinkedZigizagFusingCurved seamsPipingSeamsWhen sewing a seam match up the raw edges as accurately as possible, and use pins to secure the two pieces of fabricplain (lockstitch)lap Frenchdouble stitchingtopstitchingoverlockedTaskYou should make samplers for each of the above techniques - clearly labelling them, taking photos of the processes, tools and equipment, and sewing machine settings. Use calico and coloured thread to make each of the samplers.
Extension TaskRepeat some of the seams with different samples of fabric:CottonDenimCotton jerseySatinCorduroyChiffonPolyesterNylon jerseyMake notes of settings, techniques, and suitability for the fabrics.
Labelling and packagingKey legislationConsumer Protection from Unfair Trading Regulations 2008EU Regulation (EU) No 1007/2011on textile fibre names and related labelling and marking of the fibre composition of textile productsTextile Products (Labelling and Fibre Composition) Regulations 2012How should the product be labelled?
All items must carry a label indicating the fibre content, either on the item or the packaging. This label does not have to be permanently attached to the garment and may be removable.
The label should be durable, easily legible, visible and accessible. If the product is supplied to a wholesaler the indication may be contained within business documents - for example, the invoice. A textile product consisting of two or more fibres accounting for 85% of the finished product should be marked with the fibre followed by a percentage - for example, cotton 80%, polyester 15%, nylon 5%.
If a product consists of two or more components with different fibre contents - for example, a jacket with a lining - the content of each must be shown. Any decorative matter that makes up 7% or less of the product is excluded from the indication of fibre content. The word 'pure' should only be used where the garment is made up of only one fibre. The word 'silk' cannot be used to describe the texture of any other fibre - for example, 'silk acetate' is not permitted. Only certain names can be used for textile fibres, and these are listed in annex I of EU Regulation (EU) No 1007/2011 on textile fibre names and related labelling and marking of the fibre composition of textile products.
This list may be updated as new technology produces new fibres. Since the Regulation was published only one addition has been made (polypropylene/polyamide bicomponent). Any further additions will be shown in the 'Amended by' section of the Regulation's page on the Eur-Lex website and you are advised to check this.
If you are using, buying or selling a fibre product with a name that does not appear on this list, contact your local trading standards service for advice.
The use of non-textile parts of animal origin must be clearly labelled or marked using the phrase 'contains non-textile parts of animal origin'.
Use the internet to find out what each symbol means
Quality Product maintenance
Lesley CresswellPages:107- 109
Symbols
The CE marking is required for many products. It states that the product is assessed before being placed on the market and meets EU safety, health and environmental protection requirements. Through this website the European Commission provides economic operators and consumers with information on how the process of affixing the CE marking on a product works.
Environmental concerns
Health and safety
Quality assurance and quality control