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C 70
Fiber PreparationHigh-Performance Card C 70
High-Performance Card C 70
The card with the maximum active carding area
C 70
The combination of 1.5 m working width, largest active carding area and precision of the carding gap is the foundation for high production and the quality of the yarn produced.
3
No OtherProduces More
4
Excellent Raw Material Utilization
5
Selective trash removal thanks to the adjustable knife on the licker-in, inserts on the Q-package and varying fl at speeds optimize raw material utilization.
6
The unique IGS system guarantees consistent sliver quality during the lifetime of the clothings. In practice, this increases the service life by up to 20%.
7
C 70
Consistent Sliver Quality
8
Short DowntimesQuick adjustment to raw materials due to modular design
Sophisticated Solutions from Start to FinishIntervention-free machine operation due to absolutely uniform batt weight and web formation
AEROfeedSupplies up to 10 cards in one line with 1 200 kg/h line production
Excellent Raw Material UtilizationSelective trash removal in the carding process
Largest Active Carding AreaMaximal production is derived from the largest active carding area
Consistent Sliver QualityIGS – ensures permanently sharp clothings and increases the clothing service life
9
Energy-savingCompact design with small moveable masses
Process ShorteningQuicker material throughput with draw frame modules
Everything under ControlHigh production and sliver quality with the reliable leveling of the card and controlled fi ber guidance
OUTSTANDING FEATURES
10
Rieter . High-Performance Card C 70
No Other Produces MoreThe combination – largest active carding area and precise carding gap – is the reason
Decisive for the yarn quality on the cards is the number of the card flats in contact across the working width. The C 70 with 32 flats in working position and 1.5 m working width has the largest active carding area and thereby differs significantly from other card models.The active carding index (ACI) is a parameter for the effective carding area – the number of flats that engage is multiplied with the card working width. Based on the table, various card models are listed in the ACI and explain logi-cally why the C 70 performs such good carding work.
Active carding area
1 m = 100%1.28 m = 128%
C 70: 1.5 m = 171%
Key factor carding area
Card C 70 1.50 m 1.00 m 1.28 m
Number of flats 99 84 84
Flats in operating position 32 28 28
Working width [m] 1.50 1.00 1.28
ACI 48 28 35.8
C 70 advantage – 71% 34%
Decisive for the carding result is still the precision of the carding gap over the whole machine width. The carding gap is set according to the production and the raw material processed. Due to the precise flats guidance, the tight tol-erances and the material combination, cast-iron plate with cast-iron cylinder, the carding gap also adheres exactly to the predefined setting during operation.
Precise carding gap
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Rieter . High-Performance Card C 70
Optimal Raw Material UtilizationSavings thanks to more selective trash removal
The mote knife on the licker-in is quickly adjusted for optimal raw material utilization as well as flexible adaptation to various raw materials. The C 70 offers optimal configuration possibilities for every practical requirement. The manual ad-justment allows adaptation of the mote knife. An automated version is optionally available which makes adjustment of the mote knife possible during production.
With the selective trash removal, you determine the economic success based on intelligent utilization of the raw fiber material and targeted quality of the end product. Potentials for saving are considerable, as is shown in the graph Savings potential with the C 70 depending on the cotton price and waste percentage (Basis 800 kg/h card line production).
Savings with the selective trash removal
China India Cotlook A
USD 250 000.00
USD 200 000.00
USD 150 000.00
USD 100 000.00
USD 50 000.00
USD 0.00
0.25 0.5 0.75
China
Savings potential with the C 70 depending on the cotton price and waste percentage (Basis 800 kg/h card line production)
1 1.25 1.5
India Cotlook A
USD 6.00
USD 5.00
USD 4.00
USD 3.00
USD 2.00
USD 1.00
USD 0.00
Highest value [USD/kg] USD average 2010 – 2014
Range of cotton prices
Area of practice Savings C 70
Variable extraction width on the licker-in
Fiber Trash
Extraction width 70 mm
Waste extraction
Extraction width 40 mm
Fiber Trash
With the licker-in, the extraction width can be variably set according to the trash content of the cotton and the required waste amount
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Rieter . High-Performance Card C 70
Q-package in pre-and post-carding zoneInfluencing the waste composition by the strength of the inserts
Insert strong 8 mm
Fiber Trash
Insert fi ne 2 mm
Fiber Trash
The optimal ratio of good fi bers to waste is adjusted by inserts
Extremely profitable is the optimal raw material utilization re-sulting from the low-wear mote knife in the pre- and post-carding zone with differing extraction width. Inserts can be replaced in the shortest possible time, without using tools. For the different degrees of contamination, four designs are available – open, fine, medium and strong.
Via frequency converter, speed of the flats can be continuously adjusted to production and quality – independent of the cylinder speed. The card is there-by exactly aligned to the raw material being used.
The continuously adjustable fl ats speed is set to the economical optimum
Waste extraction with variable flats speed
0.16 0.39
Speed[m/min]
Fiber Trash
Variable fl ats speed
Quicker and easier exchange of the insert elements for selectable waste extraction
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Rieter . High-Performance Card C 70
Example
Production (12 C 70 with 95 kg/h) 1 140 kg/h
Yearly working hours 8 400 h
Total card waste 5.5%
Licker-in waste 1.5%
Mixed waste without separate licker-in waste disposal USD/kg 0.72
Licker-in waste with separate licker-in waste disposal USD/kg 0.43
Flats and card waste with separate licker-in waste disposal USD/kg 0.97
Yearly saving USD 54 104
The separate disposal of the licker-in waste is an option of the C 70, which has an extremely short payback time. Hence the cleaner, more valuable flat waste is separated from the dirtier licker-in waste. This is either resold as valuable raw material, or is fed into the yarn production in the spinning mill by means of a recycling line.
Separate licker-in waste disposal
Plant with separate suction removal of the licker-in waste
Features of the separate licker-in waste disposal are:• Very economical, intermittent waste disposal, that is inte-
grated in the waste transport of the blowroom and there-fore does not generate any additional air requirement.
• A visual assessment of the waste composition is possible at any time.
• The waste box on rollers allows easy handling with main-tenance and repair work.
Licker-in waste
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Rieter . High-Performance Card C 70
Unique Integrated Grinding System IGS Ensuring consistency of quality and increasing the service life of the clothing by 20%
With IGS-classic, a grindstone is automatically moved across the cylinder clothing during production. This operation is performed 400 times during the expected service life of the clothing. Spread over the service life of the cylinder clothing, the programming of the grinding plan calculates the optimal distribution of the grinding cycles.
IGS-classic keeps the cylinder clothing sharp
400 times
Manually ground / ground with IGS-classic (400 times)
Manually ground Automatically ground
The continual wear of the card clothing gains in importance with highly productive cards. The integrated grinding system IGS – exclusive to Rieter – solves this problem from scratch by keeping the clothings constantly sharp.
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Rieter . High-Performance Card C 70
With IGS you save money
In practice, it has been shown that the life cycle of the cylinder clothing is extended by 10 – 20% in all appli-cations through the use of IGS-classic. In addition, the savings gained from the lower maintenance requirements are evident. Furthermore, the machine downtimes neces-sary for manual grinding are eliminated.
IGS-top additionally sharpens the flat clothing
The IGS-top sharpens the flat clothing fully automati-cally. The control calculates the grinding cycles over the pre-selected service life of the flat clothing. Through the many small grinding operations, the quality remains more constant in comparison to that with fewer, aggressive manual grinding operations of a full grinding roller.
Tim
e re
quire
d
Manual grinding
Time required
IGS-classicIGS-classic and IGS-top
Cylinder grinding Flat grinding Setting
Clothings after 240 tonnes production, with IGS-top (left), without (right) IGS-top
IGS- system
Without IGS: manual cylinder and flats grinding
IGS-classic: automatic cylinder grinding, manual flats grinding
IGS-top + IGS-classic = IGS- system: automatic cylinder and flats grinding, manual flats setting
Quality improvement with the IGS- system
Neps
in c
ard
sliv
er
Acceptable number of neps
Extended service life of the clothing
Service life of the clothing
16
1990 2002 2010 2015
100
90
80
70
60
50
40
30
20
10
0
Rieter . High-Performance Card C 70
C 4
-20%
-40%
-20%
The Recipe for Low Energy Consumption is Found in the Machine DesignLower energy consumption than all other cards
Card C 70 – the green card
A large price factor with yarn manufacture is the energy consumption. With Rieter spinning ma-chines, focus has always been placed on low energy consumption. With the introduction of the 1.5 m technology, the energy consumption of the cards has been drastically reduced. As a consequence of the innovations in the area of flats, the Card C 70 exhibits an energy consumption that is 20% lower (kW per kilogram of produced card sliver).
The lowest energy balance is based on:• Maximal performance capacity• Innovative machine geometry with small,
moveable masses, as with the cylinder with larger working width
• Precise machine construction, e.g. exact flats distance
Introduction date of the machines
Ener
gy c
onsu
mpt
ion
in k
Wh/
kg [%
]
Energy consumption strongly reduced since 1992
C 50/51TREXplus
C 70largest active carding area
C 601 500 mm working width
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0 20 40 60 80 100 120 140 160 180 200 220 240 260 280
160
140
120
100
80
60
40
20
0
120 000
100 000
80 000
60 000
40 000
20 000
0
Rieter . High-Performance Card C 70
65
140
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
0.157
0.091
102 942
59 509
Details are based on equal carding quality and 0.1 USD/kWh
With the same carding quality, the C 70 saves more than 40% energy compared to 1 m cards
Prod
uctio
n [k
g]
Competitors Card C 70
115% higher performanceEn
ergy
con
sum
ptio
n [k
Wh/
kg]
42% lower energy consumption
Cost
s for
an
800
kg/h
car
d lin
e [C
HF/a
]
Yearly savings 43 433 CHF
Energy consumption with man-made fibers, 100% viscose, Ne 30
= 24% Energy saving with C 70
Card production [kg/h]
Ener
gy c
onsu
mpt
ion
[kW
h/kg
]
Competitors Card C 70
Details are based on comparable quality values, i.e. the C 70 produces an equal or better card sliver at higher production
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Rieter . High-Performance Card C 70
Modular design
Replacement of the licker-in, flat and doffer clothing with conventional cards is a time-consuming maintenance operation. The modular construction of the C 70 reduces these downtimes to minimal values never before achieved. All three modules are even quicker to replace with prepared optional spare modules. Each of these operations requires just one person from the main-tenance staff. For instance, the licker-in module can be complete-ly replaced in less than 90 minutes. With the IGS-system and the modular machine concept, Rieter has taken an important step towards reducing the machine downtimes and at the same time maintaining consistently better sliver quality.
Modules increase the productivity
In addition to the modern and attractive appearance of the C 70, comprehensive ergonomic improvements are integrated. These guarantee the operator friendliness and minimal machine downtimes.
Modular DesignMinimal downtimes
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Rieter . High-Performance Card C 70
AEROfeedFeeding up to 1 200 kg/h in a continuous line
Up to 1 200 kg/h* tuft material can be most economically processed with 10 cards in a continuous line. In addition, it is possible to flexibly arrange the feeding of the card line which allows optimal utilization with various raw material lots.
*dependent on raw material
AEROfeed
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16141210
86420
16141210
86420
Rieter . High-Performance Card C 70
CV [%
]CV
[%]
Patented pressure control
The patented pressure control (patent pending) in the card chute replaces the clas-sical light barrier control. This functions by giving a precise batt weight at the card feed, taking into account the raw materials and their characteristics. The result is a minimal variation [CV%] of the batt weight.
Man-made fibers with strongly lubricating fiber finish or cotton with honeydew tend to contaminate fiber guide elements. Here the web bridge must be frequently cleaned to maintain the quality level. The solution for this time-consuming un-dertaking is the new, patented web bridge (patent pending). In the shortest possible time, it can be removed, cleaned and reinstalled. If there is an appropriate replacement component in the spinning mill, the downtime can be reduced to a few minutes. The new web bridge allows a pefect, uniform web and ensures continuous operation of the card. Thick places are substantially reduced.
Sophisticated Solutions from Card Feed to DeliveryUniform batt and smooth machine running
Course of the batt weight over 24 hours
Classical light barrier control
New, patented pressure control in the card chute
Quickly removable web bridge – a reliable solution
Web bridge
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12
34
56 7
Rieter . High-Performance Card C 70
Sliver formation
The sliver formation takes place over a dynamical-ly controlled web transport, that consists of two cross aprons and a pair of rollers. It is therefore possible to reliably produce fine slivers [4 ktex] at a high delivery speed.
Short-term leveling
The feed trough measures the thickness of the sup-plied batt. The speed of the card feed roller adjusts automatically according to the values determined, so that a uniform sliver fineness is achieved.
Long-term leveling
The sliver fineness is measured by a disc roller pair at the sliver delivery. The measured signals are processed and used to control the feeding system.
From the Batt to the SliverPerfect control of the fibers for unequalled sliver quality
Card leveling
The sliver coiler CBA is extremely space-saving and op-timally adapted to the C 70. A compact sliver separation integrated in the calender unit operates reliably at full production. The sliver weight remains the same from start to finish of can filling.
Can change without loss of production and quality
1 Infeed signal: batt thickness2 Delivery signal: chute feeding speed3 Control unit for signal processing4 Infeed signal: delivery speed
5 Delivery signal: feed roller speed6 Input signal: chute filling level7 Input signal: sliver count
Card leveling system
22
Rieter . High-Performance Card C 70
Rieter drafting technology
The draw frame module of the C 70 is based on decades of unrivalled Rieter expertise concerning automatic leveling systems and the several ten thousand high-performance draw frames sold.
The integration of draw frame improves the economy and the productivity. In certain cases, application of the direct process with the rotor spinning process can optimize the yarn quality. The draw frame module is available in two versions:• C 70 SB without leveling system.• C 70 RSB with the proven Rieter leveling system.According to the yarn count, raw material and spinning technology, the number of conventional drafting passages can be reduced.
Process Shortening by Process IntegrationDraw frame module based on long established know-how
Process integration
According to the yarn count and material used, the process can be shortened by application of draw frame modules on the card. Consultation on the optimal production process is a core competence of Rieter as system supplier.
Process shortening
Process shortening using rotor spinning as an example
VARIOline Card C 70
VARIOline
VARIOline
Draw FrameSB-D 50/22
Rotor Spinning R 66/36
Rotor SpinningR 66/36
Rotor SpinningR 66/36
SPIDERweb Data System
SPIDERweb Data System
SPIDERweb Data System
Draw FrameRSB-D 50/24
Draw FrameRSB-D 50/24
Process shortening
Process shortening
Card C 70 with SB Module
Card C 70 with RSB Module
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Rieter . High-Performance Card C 70
The C 70 RSB is equipped with a digital short-term leveling system. The uniformity of the Card C 70 sliver is recorded using the well-proven principle of tongue-and-groove scanning rollers. Through the application of pneumatic load on the scanning roller, complete scanning is guaranteed. Based on the measured values, the digital signal processor calculates a nominal value for the highly dynamic servo-drive. This value is transferred at the very moment when the measured piece of card sliver reaches the leveling point in the main drafting zone.
Technology
In contrast to conventional products, the RSB module uses exact sliver scanning. This guarantees a 100% leveling of the sliver, both in the normal production process and in can change mode. The resulting advantages with the draw frame module are:• Shorter and quicker production process.• 100% leveled sliver with the C 70 RSB thanks to genuine draw frame scanning.• Genuine parallelization of the fibers by up to 5-fold drafting.• Increased productivity with lower space requirements.
Maximal leveling quality
RSB leveling principle
Scanning discs
Digital signal processor
AC servo-drive Main motorfrequency-controlled
Drafting system
Rieter Quality Monitor
24
Rieter . High-Performance Card C 70
From cotton to man-made fibers
All the features described make the Card C 70 the ulti-mate, universal card, which is at home in every area of application. It is equipped for every requirement profile. Whether it be man-made fibers, finer or coarser cotton or blends with man-made fibers.
Card C 70 for All ApplicationsNatural or man-made fibers – the C 70 processes them
The C 70 reliably processes various raw materials and their blends
Example of a highly flexible blowroom and carding line where two different blends of cotton and man-made fibers are simultaneously produced
25
Rieter . High-Performance Card C 70
The advantage of the C 70 as a modular designed card is that it can be quickly adapted to new and familiar challenges of man-made fibers, without high-performance carding having to be reinvented. Compared to the version for cotton, several differences are visible and others can only be recognised when taking a closer look:• Fiber guiding components are made of chromium (specially coated
sheet metal).• Licker-in, cylinder, flats and doffer clothings are specifically
designed for man-made fibers produced from natural or synthetic polymers.
• The pre- and post-carding zone is accordingly equipped with card-ing elements (see graph).
The C 70 for man-made fibers
The latest development CLEANcoil-PES with a new type of coating offers unique advantages in coiling. Even with critical polyester fibers, the cleaning cycle can be extended by at least 100%. This also leads to more consistent sliver and yarn quality.
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C 70
2 380 345 2 980
3 325
2 93
0 (3
755
*)72
5 (8
25*)
120 (140*)
500
(600
*)
1 96
1
3 65
5 (3
755
*)
75
Rieter . High-Performance Card C 70
Technological Data
Raw material Cotton and man-made fibers up to 65 mm
Production up to 280 kg/h
Sliver fineness 4 – 20 ktex
Batt weight 350 – 900 g/m
Technical Data (C 70 without Sliver Coiling)
Installed power** 21.3 – 29.8 kW
Delivery speed up to 300 m/min
Compressed air 0.7 Nm3/h
Exhaust air 1.20 m3/s
Waste disposal Central suction device, separate licker-in waste disposal
Cylinder speed 600 – 900 rpm
Machine Data
Machine length (with standard chute) 3 325 mm
Machine width 2 380 mm
Machine weight (with standard chute) 5 575 kg
Working width 1 500 mm
Machine DataCard C 70
* JUMBOfeed** incl. chute
27
A 196
B14
2
345 2 980 1 160
2 38
0
Rieter . High-Performance Card C 70
CBA Coiler
Cans ∅ [mm] Measurements [mm]
A B
600 1 100 1 680
750 / 800 / 1 000 1 500 2 250
CBA Technical Data
Installed power 1.4 kw
Compressed air 0.05 Nm3/h
Exhaust air 0.1 m3/s
Card C 70 with CBA coiler
CBA mounted on the floor, insertion from the side
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A
755
197
Ø 126
B24
345 2 980 1 160
2 38
0
Rieter . High-Performance Card C 70
SB Module
Cans ∅ [mm] Measurements [mm]
A B
600 1 100 1 680
750 / 800 / 1 000 1 500 2 368
SB Module Technical Data
Installed power 4.0 kw
Compressed air 0.13 Nm3/h
Exhaust air 0.25 m3/s
Card C 70 with SB module
SB module coiler mounted on the floor
29
775 C
810
B
1 237 A
3 280
345 2 980
2 38
0
Rieter . High-Performance Card C 70
Empty Can Magazine, Cans with Castors
Cans ∅ [mm] Number of empty cans Measurements [mm]
A B C
420 5 4 790 1 825 800
450 4 4 590 1 825 800
470 4 4 590 1 825 800
500 4 4 790 1 825 800
600 4 5 430 1 995 970
Empty Can Magazine, Cans without Castors
Cans ∅ [mm] Number of empty cans Measurements [mm]
A B C
420 5 3 900 1 825 800
450 4 3 700 1 825 800
470 4 3 700 1 825 800
500 4 3 900 1 825 800
600 4 4 350 1 995 970
RSB Module Technical Data
Installed power 8.1 kw
Compressed air 0.08 Nm3/h
Exhaust air 0.25 m3/s
Card C 70 with RSB module
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The Comfort of CompetencePut your confidence in Rieter's competence and enjoy the comfort of partnership!
Settle back and relax thanks to Rieter.
Rieter is the leading supplier of installations for manufacturing yarns from short staple fibers. As a competent partner, Rieter makes customers’ lives easier. It provides advice and support from the initial investment discussions to the successful operation of their spinning mills. Rieter’s comprehensive know-how from fiber through yarn to the finished textile is the basis for innovative machines and consistent yarn quality.
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Rieter . High-Performance Card C 70
Rieter's Services • Investment planning• Plant planning• Project planning and realisation• Installation and maintenance• Preventive inspection• Wide range of wear-and-tear, tech-
nology and spare parts
Rieter's Services • Spinning trials based
on the four spinning systems• Spinning mill analysis to optimize
quality and productivity• Textile laboratory services• Professional textile technological
publications
Rieter's Services• Training for management and
operating personnel• Com4® yarn marketing
(yarn licences)• Marketing support
of reference customers• Rieter Award to confer a distinc-
tion on the best students in the textile industry
• Support for universities• Symposia and roadshows
in close proximity to customers
Valuable SystemsRieter is the only textile machine manufacturer to offer four spinning technologies and to advise customers competent-ly, independently and with tailor-made solutions. Invest-ments in Rieter machines are exceptionally attractive due to the outstanding price/performance ratio, the low conver-sion costs and the longevity of the products, which remain competitive by means of retrofits. Rieter has developed high quality standards since the company was established in Switzerland in 1795. All manufacturing facilities are ISO 9001 certified.
Convincing TechnologyRieter possesses comprehensive textile and technology expertise and covers the four spinning processes through to the textile end product. Alongside the most sophisticated machines and plants, Rieter offers extensive services in the field of textile technology. Customers profit from examina-tions and tests in Rieter's spinning centers and laboratories and thus ensure the excellent quality of their yarns at high production capacity.
Supportive PartnershipNumerous sales and service centers support customers throughout the world. For decades, customers have enjoyed the advantages of one responsible contact partner for the entire spinning operation.
www.rieter.com
Rieter Machine Works Ltd.Klosterstrasse 20CH-8406 WinterthurT +41 52 208 7171F +41 52 208 8320sales.sys@rieter.comparts.sys@rieter.com
Rieter India Private Ltd.Gat No. 768/2, Village WingShindewadi-Bhor RoadTaluka Khandala, District SataraIN-Maharashtra 412 801T +91 2169 304 141F +91 2169 304 226
Rieter (China)Textile Instruments Co., Ltd.Shanghai BranchUnit B-1, 6F, Building A,Synnex International Park1068 West Tianshan RoadCN-Shanghai 200335T +86 21 6037 3333F +86 21 6037 3399
The data and illustrations in this brochure and on the corresponding data carrier refer to the date of printing. Rieter reserves the right to make any necessary changes at any time and without special notice. Rieter systems and Rieter innovations are protected by patents.
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