ring spinning vs all technologies part 2
TRANSCRIPT
8/8/2019 Ring Spinning Vs All technologies part 2
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Spinning Presentation
Syed Sohaib Hussnain Kazme (SoNu ShAh)M.Asad Lakhani
SoNuu Shah
8/8/2019 Ring Spinning Vs All technologies part 2
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Presented to Sir Hafeez ur Rehman Sheikh
SoNuu Shah
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When talking about productive potential it is specifically linked to
the capacity of machine to produce a product« for ring spinning
productive potential is the calibre of related technology to produce
yarn.
e.g
o Speedo Power
o Efficiency
o Quality
o Productivity
SoNuu Shah
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To study the comparative study of conventional
yarn manufacturing technology & new
technologies.
Besides of comparatively low productivity as
compared to other techniques, Why Still Ring
Spinning«???
Quality of yarn delivered from all yarn
manufacturing techniques
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Figure 1 represents the current offerings in spinning
machines and their comparative spinning speeds.
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After the Industrial revolution (1764-1784) Mule Spinning
gained attention throughout the world. Continuous efforts were
being made to refine this system of spinning. Later, Ring
Spinning was introduced after some modifications in MuleSpinning System. The basic technology of the Ring Spinning
remained unchanged. Ring Spinning Systems have been
refined during the last 30 years, the ultimate objectives of
spinning dialectologists are focused on higher production
speed, combined with adequate quality.
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The most widely used spinning technique in the world
due to its high speed and good quality. The Quality of
yarn produced by this technique is considered to be
the best quality yarn at a high speed.
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| Production of high strength yarns.
| Spinning of fine count yarns.
| Proper for special yarns.
| It is universally applicable (any material can be spun).
| The know how for operation of machine is well established
accessible to everyone.
| It is flexible as regards quantities (blend and lot size).
| Since the speeds in drawing section are best controlled, yarn
evenness is excellent. But if short fibers are too much, yarn
unevenness occurs.
| Fine yarns can be produced as compared to open-end system
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| Process stages are more numerous. Roving stage exists as an
extra process compared to the other systems.
| Yarn breakages are more numerous as a result of ring
traveler friction and yarn air friction. Interruptions, brokenends and piecing up problems exist because of the yarn
breakages.
| The high speed of the traveler damages the fibers.
| The capacity of the cops is limited.
| Energy cost is very high.
| Low production rate.
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| Open-end spinning is a technology for
creating yarn without using a spindle. It
was invented and developed in
Czechoslovakia in Cotton Researching
Institute in year 1963.
| Twist is provided by the turning of the
rotor.
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| Spool does not need to be rotated to insert twist
| Much larger spools can be wound
| 3-5 times faster than ring spinning
| Uniform but flexible yarn with better dye ability
| Carded yarns (coarser)
| Yarns for heavier fabrics such as denims, towels and
poplins
| 20% more twisted but 15-20% weaker as the yarn is
coarser
| Not suitable for man-made staple fibre spinning except
rayon as the fiber finish clogs the rotor
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Systems that use additional drafting components to
create yarn.
yarns that are less hairy and stronger
compact
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| 15-20% reduction in hairiness of yarn, the
| reduction being more pronounced in long length hairs
|10-15% improvement in yarn tenacity
| Twist in yarn can be reduced by 10% while maintaining
same yarn strength
| Better evenness of diameter and hairiness.
| Better abrasion resistance of yarn leading to fewer ends
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|Magnetic compacting is more user friendly &
avoids| Air suction
| Air pipes
| Perforated drums or apron
| Additional air conditioning requirements
SALIENT FEATURES
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| breaks in weaving. Loom shed droppings and linting in
knitting are reduced.
| Singeing can be omitted.
| Lower twist can be employed in doubling.
| Improved appearance and lustre of fabric with a softer.
| Reduced pilling and better dye uptake.
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Vortex Spinning
The vortex spinning technology is one of the most promising
new inventions in the spinning market. This relatively new
spinning system was also developed by the Japanese firm
Murata (Muratec). Murata¶s No. 851 Vortex Spinner made its
first appearance at OTEMAS¶97 [34]. Vortex spinning is a
false twist process, and the twist insertion in this system is
achieved by means of air jets. The main attraction of vortex
spinning is that it is claimed to be capable of spinning 100%carded cotton fibers at very high speeds (400m/min),
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Advantages
Other claimed advantages of vortex spinning are a low
maintenance cost due to fewer moving parts,
elimination of the roving frame stage, and improved
fully automatic piecing system. In addition to these,yarns produced by this method have low hairiness
compared to normal ring yarns. This is claimed to be
due to being ³air-singed´ and ³air-combed,´ which in
turn results in reduced fabric pilling; and fabrics made
from vortex yarns have outstanding abrasion
resistance, moisture absorption, color-fastness and fast
drying characteristics
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|A spinning system in which yarn is made by
wrapping fibres around a core stream of fibres using
compressed air.
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|Friction Spinning is a textile technology that allows
very heavy count yarns and technical core wrapped
yarns to be manufactured. These are most commonly
used in Mop yarns, flame retardants and high techfancy yarns such as Raydon and Kevlar.
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| The forming yarn rotates at high speed compare to other rotating
elements. It can spin yarn at very high twist insertion rates
(ie.3,00,000 twist/min). The yarn tension is practically
independent of speed and hence very high production rates (up
to 300 m/min) can be attainable. The yarns are bulkier than rotor
yarns.
| The DREF II yarns are used in many applications. Blankets for
the home application range, hotels and military uses etc. DREF
fancy yarns used for the interior decoration, wall coverings,draperies and filler yarn
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In the comparison of all the spinning techniques, wewill also need to include the quality test for each typeof the spinning technique yarn to check which one is
providing best quality yarn«for this purpose we aregoing to need following machines:
| Uster tester
| HVI 1000
| Lea Strength testing machine
| Quantum test
|Misc.
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