US3471605A - Method for treating yarns having potential crimping property - Google Patents

Method for treating yarns having potential crimping property Download PDF

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Publication number
US3471605A
US3471605A US541367A US3471605DA US3471605A US 3471605 A US3471605 A US 3471605A US 541367 A US541367 A US 541367A US 3471605D A US3471605D A US 3471605DA US 3471605 A US3471605 A US 3471605A
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United States
Prior art keywords
yarn
liquid
treating
delivering
rollers
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Expired - Lifetime
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US541367A
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English (en)
Inventor
Masao Matsui
Susumu Tokura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SNIA Viscosa SpA
Kanegafuchi Spinning Co Ltd
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SNIA Viscosa SpA
Kanegafuchi Spinning Co Ltd
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    • 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
    • D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
    • D02G1/205—After-treatments for fixing crimp or curl

Definitions

  • the present invention relates to a method for treating yarns having a potential crimping property to cause the development of the crimps. It is wellaknown that a composite filament consisting of at least two components of different shrinking properties eccentrically arranged and bonded together can be caused to develop its threedimensional crimps by heating, swelling or otherwise treating the same. However, the above-mentioned crimp developing treatment, particularly continuous treatment of continuous filaments, involves various difliculties, so there is still no practical method or apparatus for-such crimping treatment.
  • the present invention is intended to provide a method for stabilizing the tensionless condition.
  • the invention utilizes an apparatus for continuously feeding yarns into a treating bath and delivering them therefrom, characterized in that a delivering device such as rollers has its yarn nipping part placed substantially in a treating liquid or another liquid connected thereto.
  • efiective delivering speed used herein is defined as a length of a yarn in tensioned condition delivered per unit time by being nipped between two rollers or gears.
  • FIG. 1 is a schematic view illustrating diagrammatically the process of and apparatus for practicing the present invention.
  • FIG. 2 is a vertical sectional view showing an example of the yarn feeding part of the present apparatus.
  • FIGS. 3-6 are vertical sectional views each showing a different modified form of the yarn delivering part which constitutes the principal portion of the present apparatus.
  • FIGS. 7 and 8 are side views showing fibers in crimped condition.
  • a yarn z unwound from a composite filament yarn pirn 1 is fed at a constant speed by means of feeding rollers 5 and 6 through a guide 3 and a tension regulator 4. It is then passed in tensionless condition into a treating tank or bath 9 through an air nozzle 8 actuated by the air supplied as indicated at 7.
  • a treating liquid 10 being heated by a heater 12.
  • the heater 12 may be replaced by any other suitable means, such as heating the peripheral wall of the treating bath, or supplying a preheated treating liquid to the bath.
  • the feeding rollers 5 and 6 may be Nelson rollers. In case that the yarn is so thick as it will fall down by its own weight, the air nozzle 8 is unnecessary, and instead the feeding rollers may be mounted at a suitable place above the liquid. Further, as shown in FIG. 2, the feeding rollers may be half dipped in the treating liquid. In any case, whatever type the feeding device may be, it is sutficient only if it is so arranged that it may continuously feed yarns at a constant speed in tensionless condition. As to the deliver: ing device, it is necessary that the yarn nipping point thereof be substantially in the liquid.
  • the delivering device may be of the type shownin FIG. 1 consisting of a driving roller 15 and a holding roller 14, or the type shown in FIG. 3 consisting of two driving rollers x and y and a holding roller z, or the type shown in FIG. 4 having an apron-roller assembly comprising two cooperating endless belts 25 and 26 and their associated pulley belts, or the type shown in FIG. 5 comprising gears 27, 28.
  • FIG; 3 there are two nip points at the contact points between x and z and between y and z, respectively, with a first nip point, which is the contact point between x and 2, being in the. liquid.
  • a first nip point which is the contact point between x and 2
  • second, third and other nip points it is self evident that it does not matter at all whether such points are located in or outside the liquid.
  • the delivering device may be placed in a second liquid bath connected to the treating liquid.
  • a treating bath A contains water e.g., at C.
  • a delivering part B contains water at room temperature, with both interconnected by a connecting pipe C.
  • the two are not in hydraulically interconnected relation, the
  • a yarn high in expanding and contracting property has a wide range of allowance in connection with the ratio between the feeding speed and delivering speed.
  • the effective delivering speed of the delivering device is increased, while when it is in expanded or extended condition, the elfective delivering speed is decreased, with the result that the placing of the delivering device in the liquid makes it possible to impart the above-mentioned automatic balancing elfect to the apparatus.
  • the delivering device is located outside the liquid, the yarn will almost lose its expanding and contracting property so that the above-mentioned automatic balancing effect does not exist.
  • the method of the invention will offer superior stability with respect to composite fibers formed of polyamide series, polyester series, polyvinyl series or other known series polymers, if the ratio between the feeding speed and delivering speed is so selected as to be suited to the treating conditions such as treating agent (liquid) and treating temperature and to the contracting and crimping properties of said filaments.
  • Nylon-6 was used having an intrinsic viscosity of 0.94 in metea-cresol
  • a copolyamide of 90 parts of caprolactam and 10 parts of hexarnethylene isophthalate were used, having an intrinsic viscosity of 1.19.
  • the filaments are treated with water at 100 C. for 15 minutes, they develop their crimps, and their length when in water, becomes about 40% of the original value; but when a tension of mg./d. is applied thereto, the bunch becomes about 80% of the original length, with the apparent shrinkage disappearing.
  • This 40% length differential is that quantity which has connection with the above-noted expanding and contracting property.
  • the bunch of filaments was fed by an apparatus as shown in FIG. 1 (the length of the treating bath being 1 m.) using water at C., at 20 m./min. into the treating bath.
  • the delivering rollers were placed in the treating liquid, it was possible to operate safely (i.e., to advance the bunch in substantially tensionless condition) for more than 8 hours, during which time the delivering speed (peripheral speed of rollers) was maintained at a substantially constant value within a range of 14.8 m./min. to 13.7 m./rnin.
  • the operation could be effected in somewhat stabilized condition for a short period of time, only if the delivering speed was under strict control so as to be maintained in a narrow range of 14.9 m./min. to 15.0 m./min.; but it was not possible to effect a long operation of more than 1 hour.
  • a method of crimping yarns having a potential crimping property comprising the steps of providing a thermoplastic composite multi-filament yarn of potential crimping property having at least two components of different shrinking properties eccentrically arranged in a single filament, continuously feeding said yarn in tensionless condition and at a constant speed into a heated liquid -bath so as to cause the development of crimps in said yarn, and then continuously delivering the crimped yarn out of the liquid bath at a speed less than the feeding speed of the uncrimped yarn into said bath by nipping the yarn in a nip formed in the bath by at least two rotating rollers, thereby maintaining the crimped yarn in a loose, tensionless condition as it travels through the liquid bath.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
US541367A 1965-04-14 1966-04-08 Method for treating yarns having potential crimping property Expired - Lifetime US3471605A (en)

Applications Claiming Priority (1)

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JP2202465 1965-04-14

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US3471605A true US3471605A (en) 1969-10-07

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US (1) US3471605A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE679451A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES325519A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1146442A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL6604999A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624195A (en) * 1969-10-13 1971-11-30 Asahi Chemical Ind Process for the preparation of acrylic manmade fiber
US3846532A (en) * 1969-01-29 1974-11-05 Bayer Ag Continuous spinning and stretching process of the production of polyamide-6 filaments
US3979930A (en) * 1973-10-09 1976-09-14 Etablissements Callebaut-Du Blicquy S.A. Method and an apparatus for treating textile materials
CN112549182A (zh) * 2020-12-24 2021-03-26 昆山一刀精密机械有限公司 一种纸带模切机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3562636D1 (en) * 1985-01-30 1988-06-16 Mitsubishi Rayon Co Method for producing slub yarn

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2294957A (en) * 1940-11-23 1942-09-08 Eastman Kodak Co Method of crimping textile fibers
CA565910A (en) * 1958-11-11 The Dow Chemical Company Method for preparing acrylonitrile containing fibers
US2878547A (en) * 1956-04-04 1959-03-24 American Viscose Corp Filament crimping apparatus and method
US2943377A (en) * 1959-06-29 1960-07-05 Elwood Res Company Method and apparatus for crimping filaments
US3038239A (en) * 1959-03-16 1962-06-12 Du Pont Crimpable composite filament
US3060501A (en) * 1960-05-27 1962-10-30 Crawford & Russell Inc Method and apparatus for treatment of polymers
US3066006A (en) * 1960-04-29 1962-11-27 American Cyanamid Co Method of processing a tow

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA565910A (en) * 1958-11-11 The Dow Chemical Company Method for preparing acrylonitrile containing fibers
US2294957A (en) * 1940-11-23 1942-09-08 Eastman Kodak Co Method of crimping textile fibers
US2878547A (en) * 1956-04-04 1959-03-24 American Viscose Corp Filament crimping apparatus and method
US3038239A (en) * 1959-03-16 1962-06-12 Du Pont Crimpable composite filament
US2943377A (en) * 1959-06-29 1960-07-05 Elwood Res Company Method and apparatus for crimping filaments
US3066006A (en) * 1960-04-29 1962-11-27 American Cyanamid Co Method of processing a tow
US3060501A (en) * 1960-05-27 1962-10-30 Crawford & Russell Inc Method and apparatus for treatment of polymers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846532A (en) * 1969-01-29 1974-11-05 Bayer Ag Continuous spinning and stretching process of the production of polyamide-6 filaments
US3624195A (en) * 1969-10-13 1971-11-30 Asahi Chemical Ind Process for the preparation of acrylic manmade fiber
US3979930A (en) * 1973-10-09 1976-09-14 Etablissements Callebaut-Du Blicquy S.A. Method and an apparatus for treating textile materials
CN112549182A (zh) * 2020-12-24 2021-03-26 昆山一刀精密机械有限公司 一种纸带模切机

Also Published As

Publication number Publication date
ES325519A1 (es) 1967-02-16
BE679451A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1966-10-13
NL6604999A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1966-10-17
DE1660423A1 (de) 1972-03-30
GB1146442A (en) 1969-03-26

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