EP1453996A1 - Method and device for producing a combination yarn - Google Patents
Method and device for producing a combination yarnInfo
- Publication number
- EP1453996A1 EP1453996A1 EP02787940A EP02787940A EP1453996A1 EP 1453996 A1 EP1453996 A1 EP 1453996A1 EP 02787940 A EP02787940 A EP 02787940A EP 02787940 A EP02787940 A EP 02787940A EP 1453996 A1 EP1453996 A1 EP 1453996A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- unit
- yarn
- elastic
- threads
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
Definitions
- the invention relates to a method and a device for producing an elastic combination yarn, consisting of at least two threads, in which one thread (sheath thread) is a staple fiber thread, made of natural or synthetic fibers, and the other thread (core thread) is an elastic endless thread and these threads are brought together by fluidizing them.
- sheath thread is a staple fiber thread, made of natural or synthetic fibers
- core thread is an elastic endless thread and these threads are brought together by fluidizing them.
- WO 95/23886 describes a method in which staple fibers are fed directly to filaments in order to combine them with one another by blown air texturing to form a blended yarn.
- this technique did not bring the expected success and could not be implemented in practice.
- Even the attempt to connect an endless filament thread to a staple fiber thread (DE 299 02 103 U1) by means of a twist has not been successful.
- natural fibers in particular are much stiffer and cannot be opened so easily when they are interlaced, so that the core thread is not integrated satisfactorily.
- synthetic yarns are generally additionally supplied, which are then easier to intermingle, but have the disadvantage that the synthetic material content in the combination yarn is very high.
- the object of the invention is to provide an elastic combination yarn in which the elastic core thread is stably connected to a sheath thread consisting of natural or synthetic fibers or fiber mixtures, so that the threads cannot slip against one another.
- the union zone is followed by a stabilization zone in which the bond between the two threads is fixed.
- the staple fiber thread consists of flax or hemp fibers
- the pectins adhering to the fibers are loosened in the preparation zone, so that these pectins are bonded to the elastic continuous thread in the union zone. This makes it possible to stably combine even such stiff staple fiber threads with elastic threads.
- the flax or hemp thread is preferably prepared with steam to dissolve the pectins. Unless the thread is your own Adhesives contain, as is the case with cotton or synthetic fibers, for example, adhesives are applied to the fiber thread in the preparation zone.
- fiber yarn threads made of synthetic fibers can also be combined in a stable and slip-resistant manner with an elastic endless thread. Since the elastic thread does not require preparation for the union, it is usually only fed into the union zone after the preparation zone. However, it has surprisingly been found that a common thread run of the elastic thread and the fiber thread through the preparation zone is harmless, as far as the temperatures used in the preparation are not too high. This considerably simplifies the process and the device.
- the device for producing the combination yarn essentially consists of a thread feeder for several threads, a preparation unit, a combination unit and a winding unit. If necessary, a stabilization unit can be connected downstream of the combination unit in order to fix the combination yarn before winding.
- the device for producing the combination yarn is considerably simplified if the preparation unit and the combination unit are combined. In addition, friction edges are avoided, so that the elastic combination yarn is treated more gently.
- Figure 1 is a combination yarn in a tensioned state
- Figure 2 shows a combination yarn in a relaxed state
- Figure 3 shows a device for producing the combination yarn in a schematic representation
- Figure 4 shows the device of Figure 3 with additional yarn treatment facilities
- Figure 5 shows the device of Figure 4 with a combined
- Figure 7 shows an arrangement according to Figure 6, but for a combination yarn made of synthetic fibers
- Figure 8 shows a preparation, union or stabilization unit in section
- Figure 12 shows a yarn treatment device consisting of a combined preparation and combining unit in section.
- Figure 13 shows another embodiment of the yarn treatment device according to Figure 12
- Figure 14 is a preparation unit with crimping device.
- 15 shows a preparation unit with an upsetting device.
- Figure 1 shows a combination yarn 15, consisting of a sheath thread 1 and an elastic core thread 2, which is glued to the sheath thread 1 selectively over a certain length 4.
- the sheath thread 1 is a fiber thread. It is preferably made from flax or hemp fibers. These fibers have a natural plant glue (pectins) which is activated according to the invention in order to bring about a bond when combined with the elastic thread.
- FIG. 1 shows the combination yarn 15 in the stretched state, the adhesive being represented by points 3. The two threads 1 and 2 are only loosely or not at all connected over a length 5.
- FIG. 2 shows the combination yarn 15 according to FIG. 1 in a relaxed state.
- the outer thread 1 Due to the restoring force of the elastic thread 2 and the bonding with the adhesive 3 in the area 4, the outer thread 1 forms loops 6.
- the difference between the open stretched length 5 and the open relaxed length 5a shows the stretchable area of the yarn.
- the open lengths 5 and the closed lengths 4 result from the union of the two threads in the union unit 8, in which the two threads are swirled together by supplying compressed air.
- the closed lengths 4 correspond to the swirl nodes that arise in such a swirl process.
- the distance between the knots determines the size of the open lengths 5, so that the number of knots per unit length can be varied.
- the device for producing such a combination yarn generally consists of the following sub-devices:
- Yarn feed The threads 1 and 2, which are to be combined, are each drawn off overhead from the creel and brought together to form a combination yarn 15, 115.
- a device 10 for air conditioning or conditioning the threads can be arranged on or around the creel.
- the threads can be prepared for further treatment by applying chemical or natural fluids.
- supply mechanisms LW are provided in the spinning device, which are usually designed as godet drives with which the de thread quantity as well as the required thread tension can be adjusted by changing the delivery speeds.
- additional supply units LW and / or further thread tension regulating elements such as, for example, B. dancer arm or thread brake used.
- the surfaces and materials of the LW delivery plants are adapted to the individual game and the respective position in the thread path for an optimal and gentle thread run and for optimal thread tension conditions. It is advantageous to use soft, rubber-like material as the surface material for the drive rollers for non-elastic yarns, such as natural fiber yarns, while drive rollers made of metal or coated metal are used for synthetic yarns with higher elasticity.
- Preparation unit Sheath or carrier yarns, in which core yarns are to be integrated and fixed, are physically and / or chemically prepared in a special device for combining with the core yarn.
- the thread is subjected to temperature by means of a fluid, such as air, steam, water, oil.
- a fluid such as air, steam, water, oil.
- the natural binders vegetable glue
- the elastic core thread 2 can be fed together with the staple fiber thread 1, 101 through the preparation unit 7 or only later to the sheath thread 1, 101.
- the preparation unit 7 can also be designed as a mechanical stowage device 71 or also contain a crimping device 72, 72 '. Association Unit:
- the elastic core thread 2 is combined with the sheath thread 1, 101 and glued in the process. Surprisingly, this bonding takes place periodically at the intermingling knots, regardless of whether adhesives are distributed continuously or periodically over the length of the sheath thread 1, 101, if the two threads are swirled together by means of a fluid, such as with air
- Preparation unit 7 previously treated with steam flax or hemp thread 1 is easy to open with the compressed air supplied for swirling.
- the elastic core thread 2 is introduced into the center of the opened natural fiber thread 1.
- the natural binders or adhesives are cooled and hardened by the compressed air, so that the elastic thread 2 is stably glued to the sheath thread 1.
- these adhesives can also be selected so that they can be removed again after processing the yarn.
- the combination yarn 115 is acted upon by a fluid or another heating device. As a result, the state of the combination yarn 115 generated in the combination unit 8 is stabilized and / or the running properties are optimized for further processing. If Resine as an adhesive such. B. in the case of synthetic fibers in the preparation unit 7 on the sheath 101, the stabilization takes place by means of heat treatment. If the combination yarn 15 consisting of hemp or flax fibers has been intermingled with cold air in the union unit 8, a fixation has usually already taken place and a stabilization unit 9 is not required.
- Winding device LW6 Winding device LW6:
- the combined yarn 15, 115 is wound up for further processing.
- the coil structure can be freely defined.
- the coils can be created in parallel, conically, with a constant or constantly changing crossing angle.
- FIG. 3 shows a device for producing the combination yarn 15 in a schematic representation.
- the sheath thread 1 which is a staple fiber thread, is drawn off from the bobbin 1 by means of the delivery mechanism LW1a and fed to the preparation unit 7.
- the thread 1 is exposed to a temperature by means of a fluid, preferably steam, or other heating elements in order to trigger the pectins of the flax or hemp fibers 1 for bonding with the elastic thread 2.
- the thread 1 thus prepared then runs into the union unit 8, in which both threads 1 and 2 are combined by swirling.
- the triggered pectins of the hemp or flax thread 1 bring about a bond 3 in the closed lengths (knots), as shown in FIGS. 1 and 2.
- the elastic thread 2 is unwound from a yarn spool 2a, which is driven by a delivery unit LWO, and is supplied by a delivery unit LW1b past the preparation unit 7 to the union unit 8, where it is swirled and glued to the staple fiber thread 1.
- the thread 2 can also be guided over the preparation unit 7.
- Adhesion is better, however, if the delivery unit LW1a is designed as a heated godet and there is already a preparatory heating to trigger the pectins.
- the combination yarn 15 formed from the two threads 1 and 2 is wound into a bobbin by the winding unit LW6.
- the tension of the sheath thread 1 required for the process is defined by the speeds of the delivery plant LW1a and the winder LW6.
- the stretching or delivery of the elastic thread 2 is determined by the speeds of the delivery mechanisms LWO and LW1b.
- the tension of the elastic thread 2 in the area of the union unit 8 necessary for the union is defined by the speeds of the delivery mechanism LW1b and LW6.
- the device shown schematically in FIG. 3 is to be understood in its composition as a minimum requirement for carrying out the process.
- FIG. 4 shows another device for producing a combination yarn 115 according to the invention with additional delivery units LW 2a and LW 2b, as well as LW 3, LW 4 and LW 5 for optimizing the thread tensions that are necessary in the individual areas, and a device for air conditioning 10 and a further device 9 for stabilizing the combined threads 2 and 101 for the combination yarn 115.
- the yarn package 1a is seated in an air conditioning unit 10, in which the air condition is regulated with regard to temperature and air humidity.
- the staple fiber thread 101 is made of synthetic fibers, synthetic fibers being understood here to mean all artificially produced fibers, including viscose fibers.
- the yarn package 1a or the staple fiber thread 101 can also be wetted directly with fluids, such as water, steam, or chemical preparations.
- the air conditioning fluid is supplied via feed line 14. This air conditioning improves the running properties and strength values of the yarns. This also has an advantageous effect on natural fiber yarns.
- the sheath thread 101 is withdrawn from the spool with a feed mechanism LW1a, which is followed by a further feed mechanism LW2a, which serves to eliminate thread tension irregularities which come from the spool 1a.
- the thread 101 is, depending on the fiber material exposed to a temperature by means of a fluid or other heating elements in order to prepare them for the joining and bonding process. Since this fiber material does not have its own adhesive 3, adhesive 30 is applied to the thread 101 in the preparation unit 7 via a feed 11.
- the thread 101 then runs via a further delivery unit LW3 into the union unit 8.
- the elastic thread 2 is now also supplied via this delivery unit LW3.
- the yarn spool 2a with the elastic yarn 2 is driven by the delivery plant LWO. With the speeds of the delivery units LWO and LW1b, the stretching or overdelivery of the elastic yarn 2 is defined, while the delivery unit LW2b in turn serves to calm the elastic thread 2 and conveys it past the preparation unit 7 via the delivery unit LW3 into the union unit 8.
- the elastic thread 2 is connected to the sheath thread 101 by swirling using compressed air. The compressed air is supplied via a feed line 12.
- the combination yarn 115 produced in this way runs via a further godet LW4 into a stabilization unit 9 and is exposed in this to a temperature which is generated by means of a fluid or heater, depending on the desired fixation of the Combination yarns 115.
- the combination yarn 115 thus stabilized then runs through a further delivery unit LW5 and is wound up by means of the winding unit LW6.
- the delivery units between the individual yarn treatment stages 7, 8, 9 are not absolutely necessary, but are used depending on the requirement whether a certain tension of the combined threads 2 and 101 must be ensured in the respective yarn treatment zone, which is different from the other yarn treatment zone.
- FIG. 5 shows a further device for producing a combination yarn 15 according to the invention, in which the preparation unit 7 and the combining unit 8 are combined in a single yarn treatment device 16.
- the threads 1 and 2 run together through the yarn treatment device 16 and are exposed for treatment to the corresponding temperatures which are generated by supplying heating fluids.
- the required fluids are supplied through the feed lines 11 and 12.
- This version has the advantage that the overall device is considerably simplified and, above all, the thread run is cheaper, so that damage caused by leading edges and the like is avoided.
- FIG. 6 shows a preparation unit 7 and a combination unit 8 connected at a distance for producing a combination yarn 15, consisting of a staple fiber thread 1 and an elastic thread 2 in section. Both units 7 and 8 have a yarn treatment chamber 17 designed as a thread channel 17.
- the staple fiber yarn 1 consists of hemp or flax and passes through the preparation unit 7. Fluid - in this case water vapor - is supplied via a feed line 11 and a bore 18. This softens and loosens the plant glue 3 that is inherent to the fibers.
- the elastic thread 2 is either passed through the preparation unit 7 or past it along with the staple fiber thread 1 together through the combination unit 8, depending on how the elastic thread 2 tolerates the temperatures for triggering the pectins.
- Compressed air is introduced into the thread channel 17 of the union unit 8 via a feed line 12 and a bore 18, which swirls the elastic thread 2 with the staple fiber thread 1 and connects it to it.
- the elastic thread 2 comes to rest so that it is largely covered by the staple fiber thread 1.
- the previously softened plant glue 3 is solidified again and the staple fiber thread 1 is glued to the elastic thread 2 the nodes as contact points instead.
- the intermingling process results in a periodic punctual connection in the area of the so-called “intermingling knots”, as shown in FIGS. 1 and 2.
- the frequency of the knots is dependent on parameters such as yarn tension, air pressure, size of the feed bore and the length of the intermingling chamber.
- the spacing of the intermingling knots and thus the size of the open lengths 5 can thus be adapted to the requirements, so that more or less stretchable combination yarns 15, 115 can be produced.
- a combination yarn 115 is to be produced from a staple fiber thread 101, in which the staple fibers have no or not enough of their own adhesive, such as e.g. B. synthetic fibers or cotton or mixtures thereof, the staple fiber thread 101 is wetted in the preparation chamber 7 with an adhesive 30 and then swirled together in the union chamber 8 with the elastic thread 2.
- the staple fiber thread 101 is wetted in the preparation chamber 7 with an adhesive 30 and then swirled together in the union chamber 8 with the elastic thread 2.
- FIG. 7 shows such a preparation unit 7 and the downstream combination unit 8 for producing one of the combination yarn 115, consisting of a synthetic fiber thread 101 and an elastic thread 2, in section.
- the two threads 101 and 2 are felt together by the preparation unit 7.
- the two threads 101 and 2 are acted upon by an adhesive 30 which is supplied via the line 11.
- This adhesive or binder 30 may be such that it can be washed out and removed again after the processing process. Thereafter, the two threads 101 and 2 wetted with adhesive 30 are fed to the union unit 8 and are intermingled there.
- FIG. 8 generally shows in longitudinal section the structure of a yarn treatment device which can be used both as a preparation unit 7 or as a combination unit 8 or stabilization unit 9.
- This device consists of a channel-like yarn treatment chamber 17 and one or more feed bores 18, via which fluid for heating, swirling or stabilizing or also adhesive can be supplied.
- FIGS. 9 to 11 show exemplary embodiments of the device according to FIG. 8 in cross-section AA, in which the feed takes place via one, two or three feed bores 18.
- bores 18 can also be provided, which are additionally axially offset (not shown). Depending on the type of yarn, this results in an optimal application and thus a good penetration of the threads with the respective fluid.
- the bores 18 can also be at a different angle to the axis of the yarn channel 17 than shown, so that the fluid supplied exerts a conveying or braking effect on the threads.
- the yarn treatment device 16 shows a yarn treatment device 16 in which the preparation unit 7 and the fixing unit 8 are combined in a single device.
- the sheath thread 1 or 101 and the elastic thread 2 together pass through the yarn treatment chamber I 17.
- the threads are first fed with a fluid supplied via the feed 11 and the bore 18 and then with another fluid, via the feed line 12 and the second bore 18 supplied fluid treated.
- This design has the advantage that there are no rubbing edges between the treatment stages that can damage the yarn.
- the inlets and outlets of the devices are designed to be gentle on the thread and low in friction.
- the yarn treatment device 16 shows another embodiment of the yarn treatment device 16, in which the preparation unit 7 and the combining unit 8 are also combined.
- the sections 17 and 17a of the yarn treatment chamber have different diameters or dimensions, such as they are required for the respective treatment level.
- the yarn treatment chamber 17 or 17a normally has a circular cylindrical cross section. However, it can also have other cross-sectional shapes, such as semicircular, rectangular (not shown).
- the feed bores 18 can have different cross-sectional shapes as well as sizes (not shown), depending on what is to be fed through them.
- FIG. 14 shows the preparation unit 7 supplemented by a crimping device which consists of two gear wheels 72, 72 '.
- the hemp or linen thread 1 runs out of the yarn treatment chamber 17 between the meshing gears 72, 72 'and is thereby crimped.
- This crimping has the advantage that the thread 1 becomes more supple and elastic and the combination yarn 15 in the fabric proves to be substantially more dimensionally stable, so that bulges decrease again and the item also shows less tendency to crease than if the relatively stiff flax or hemp yarn 1 has not received this treatment.
- FIG. 15 shows another preparation unit in the form of an upsetting device 71 with a yarn treatment chamber 171 which tapers conically in the direction of the thread and into which the jacket thread 1 runs.
- the thread 1 jams through the narrow exit 172 and is thereby compressed in the yarn treatment chamber 171.
- a fluid preferably steam in the case of a hemp or flax fiber yarn, can be introduced through the feed bore 18 in order to release the pectins as a natural adhesive. This has approximately the same effect as in the crimping device described in FIG. 14.
- sheath threads can also be used.
- these sheath threads of different material for example one fiber yarn made of natural fibers and the other sheath thread made of synthetic staple fibers or mixtures with natural staple fibers, the preparation must be adjusted accordingly.
- a plurality of preparation units 7, each adapted to the material of the jacket thread, can thus be provided for the individual jacket threads 1, 101.
- the union unit 8 may have to be additionally provided with an adhesive supply or a further union unit 8 is to be provided, which is on the jacket thread 101 is matched from synthetic fibers.
- sheath threads made from fiber blends sheath threads made from fiber blends.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10161419 | 2001-12-13 | ||
DE10161419A DE10161419A1 (en) | 2001-12-13 | 2001-12-13 | Method and device for producing a combination yarn |
PCT/EP2002/014149 WO2003050336A1 (en) | 2001-12-13 | 2002-12-12 | Method and device for producing a combination yarn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1453996A1 true EP1453996A1 (en) | 2004-09-08 |
EP1453996B1 EP1453996B1 (en) | 2005-03-16 |
Family
ID=7709172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02787940A Expired - Lifetime EP1453996B1 (en) | 2001-12-13 | 2002-12-12 | Method and device for producing a combination yarn |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1453996B1 (en) |
AT (1) | ATE291115T1 (en) |
AU (1) | AU2002352244A1 (en) |
DE (2) | DE10161419A1 (en) |
WO (1) | WO2003050336A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7083853B2 (en) | 1999-06-14 | 2006-08-01 | E. I. Du Pont De Nemours And Company | Stretch break method and product |
US7100246B1 (en) | 1999-06-14 | 2006-09-05 | E. I. Du Pont De Nemours And Company | Stretch break method and product |
WO2005049902A1 (en) * | 2003-10-21 | 2005-06-02 | E.I. Du Pont De Nemours And Company | Yarn |
EP1718791B1 (en) | 2004-02-27 | 2008-08-27 | E.I. Du Pont De Nemours And Company | Spun yarn, and method and apparatus for the manufacture thereof |
DE102009008054A1 (en) * | 2009-02-09 | 2011-02-17 | Kunert Fashion Gmbh & Co. Kg | Multi-component yarn and legwear made therefrom |
JP2023524528A (en) * | 2020-05-07 | 2023-06-12 | ユニバーサル.ファイバーズ.インコーポレイテッド | heathered helix thread |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028536B1 (en) * | 1970-05-18 | 1975-09-16 | ||
GB1495546A (en) * | 1974-03-21 | 1977-12-21 | Ici Ltd | Bonded staple fibre yarns |
US3940917A (en) * | 1974-09-05 | 1976-03-02 | E. I. Du Pont De Nemours And Company | Composite elastic yarns and process for producing them |
ES2048732T3 (en) * | 1986-11-26 | 1994-04-01 | Fadis Spa | MACHINE FOR COUPLING BY AIR JET OF DIFFERENT THREADS. |
DE3742779A1 (en) * | 1987-01-16 | 1988-07-28 | Barmag Barmer Maschf | Process for producing an effect yarn |
DE3717921A1 (en) * | 1987-05-27 | 1988-12-15 | Ackermann Goeggingen Ag | YARN, ESPECIALLY SEWING YARN, AND METHOD AND DEVICE FOR THE PRODUCTION THEREOF |
DE3815696C1 (en) * | 1988-05-07 | 1989-08-24 | Amann & Soehne Gmbh & Co, 7124 Boennigheim, De | |
TW317578B (en) * | 1994-03-01 | 1997-10-11 | Heberlein & Co Ag | |
DE19624412A1 (en) * | 1996-06-19 | 1998-01-02 | Hoechst Trevira Gmbh & Co Kg | Multi-component yarns |
-
2001
- 2001-12-13 DE DE10161419A patent/DE10161419A1/en not_active Withdrawn
-
2002
- 2002-12-12 WO PCT/EP2002/014149 patent/WO2003050336A1/en not_active Application Discontinuation
- 2002-12-12 DE DE50202512T patent/DE50202512D1/en not_active Expired - Lifetime
- 2002-12-12 AU AU2002352244A patent/AU2002352244A1/en not_active Abandoned
- 2002-12-12 EP EP02787940A patent/EP1453996B1/en not_active Expired - Lifetime
- 2002-12-12 AT AT02787940T patent/ATE291115T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO03050336A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003050336A1 (en) | 2003-06-19 |
DE10161419A1 (en) | 2003-06-18 |
DE50202512D1 (en) | 2005-04-21 |
WO2003050336A8 (en) | 2005-05-12 |
EP1453996B1 (en) | 2005-03-16 |
ATE291115T1 (en) | 2005-04-15 |
AU2002352244A1 (en) | 2003-06-23 |
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