US3516241A - Process for the manufacture of crimped spun yarn - Google Patents

Process for the manufacture of crimped spun yarn Download PDF

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Publication number
US3516241A
US3516241A US770687A US3516241DA US3516241A US 3516241 A US3516241 A US 3516241A US 770687 A US770687 A US 770687A US 3516241D A US3516241D A US 3516241DA US 3516241 A US3516241 A US 3516241A
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United States
Prior art keywords
crimped
yarn
zone
fiber
denier
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Expired - Lifetime
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US770687A
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English (en)
Inventor
Hiroshi Nakano
Hideo Takai
Yoshiaki Murono
Fumio Nakajima
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Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
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Asahi Chemical Industry 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
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/127—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes including drawing or stretching on the same machine

Definitions

  • crimped spun yarn is obtained which is characterized by superior bulkiness and crimp tensional resiliency.
  • This invention relates to process for the preparation of crimped spun yarn from either multifilaments or staple fibers of a thermosynthetic substance, preferably polyamide such as nylon.
  • the yarn must preferably be composed of cut fibers.
  • crimped yarns I from staple fibers.
  • crimps are formed on the fibrous material in the form of fibrous mass, carded webs or slivers. Therefore, this kind of crimped fibrous material should be newly spun and thus the aforementioned difiiculty of spinning is again experienced.
  • the crimped linear products from staple fibers are inferior in their tensional modulus to those which have been manufactured from continuous multifilaments.
  • a still other object of the present invention is to obviate the aforementioned various drawbacks inherent in the conventional process for the manufacture of crimped bulky yarns.
  • FIG. 1 is a schematic representation of a manufacturing plant which is adapted for use in carrying out the process according to this invention, using as the synthetic thermosetting fibrous material continuous filaments preferably in the form of tows.
  • FIG. 3 is a perspective view of the mechanism shown in FIG. 2.
  • FIG. 4 is an enlarged perspective view of a part of the plant shown in FIG. 1, showing a decrimping and tension compensating means.
  • FIG. 5 is a similar view to FIG. 4, where the shown mechanism is in its stage for compensation of yarn tension which has been lost by the detangling operation of the mechanism when, for instance, a tangled yarn mass is being straightened out at the inlet.
  • FIG. 6 is an explanatory schematic view of part of means adapted for performing a modified process, giving a possibility for manufacturing same kind of improved crimped products from staple fibers.
  • FIG. 7 is a diagram showing the results of comparative tests for the crimped bulky yarns manufactured by the inventive process relative to control yarns.
  • a continuous bundle of polyamide, polyester or the like multifilaments 10 is withdrawn substantially in parallel filament arrangement from package 11, passes through a pigtail guide 12, and is then passed in multiplie and parallel wraps about a series of positively driven rollers 13, 14 and 15 in succession, said rollers constituting a roller group defining a preparatory feeding stage to the leading or back end of a stretch break zone beginning at a stationary thread guide 60 and terminating into a pair of rollers 17 and 18, followed by a main drafting zone constituted by a pair of moving apron bands 21 and 22, preferably of leather.
  • the multifilaments bundle 10 is supplied to guide 12 directly from a spinning machine rather than from a package.
  • the bundle 10 is fed through carrier or break roller 16 to between rotating top roller 17 and endless apron band 22, the latter being positively driven by drive roller 18 which is kept in engagement with said top roller 17 through the intermediary of said band 22.
  • the filaments bundle 10 is further conveyed forwards by being caught between the pair of apron bands 21 and 22, the former being driven by drive roller 19.
  • the delivery ends of these bands are guided respectively by stationary guide members or aprons 23 and 24.
  • Bottom apron band 24 is guided positively further by guide roller 20.
  • the thus delivered filaments at 25 from the main drafting zone, having been drafted and random fiber cut, yet parallel maintaining the bundle shape as before, are then conveyed to an auxiliary or after-drafting zone extending between two pairs of positively driven rollers 26, 27 and 28, 29, so as to provide the cut fiber bundle at 25 with a slight drafting effect such as or so.
  • the thus drafted fiber bundle delivered from the delivery roller pair is fed forcibly to the stuffing box assembly, generally shown at 30 and more specifically shown in FIGS. 2 and 3 in an enlarged representation.
  • the stuffing box or stuifer having a rectangular cross-section as shown in FIG. 3 is formed with a longitudinal bore 31 in which the fiber bundle is forced into a zigzag stack,
  • the forcibly fed fiber bundle is in its continuous state as a whole, although each of the constituent filaments has been cut into short lengths of approximately 100 mm. or so, in the fiber form.
  • the forcibly fed fiber bundle at 32 represents primary fine crimps and secondary coarse crimps as found in the stuffer bore 31 which crimps are set therein under the influence of heat energy supplied by heating means preferably consisting of electric heating elements 33 embedded in insulator layer 34 such as asbestos and connected to a suitable current source as schematically shown at 35.
  • the insulator layer 34 is armoured by a metallic cylinder cover 36 for increasing its rigidity.
  • the stuffer chamber 31 is normally closed at its outlet end by a pivotable closure plate 31a, but in operation kept in communication through the forcibly opened closure with a channel-shaped chute 37 which is rigidly connected with the stufler 30 and provided with a plurality of, herein shown three, pressurizing means formed in this case into pendulum plates 38, each carrying a weight mass 38a.
  • the crimped and heat set fibers 32a are taken out forcibly against the gravity checking action provided by the pendulum means 38, as most clearly seen from FIG. 2, and fed to decrimper, generally shown at 39.
  • the fiber bundle 32a is threaded through stationary yarn guide eye 41, and then brought into contact alternately with stationary guide bar 40 and the guide arms 42a and 42b of pivotable tension bar 42. Then, the bundle is threaded through second stationary yarn guide eye 45, thence in a Zigzag way through a plurality of parallel yarn guide pins 46.
  • the tension bar 42 is pivotably mounted at 43 and weighted at 44. The weight mass is shown at 49.
  • Yarn guides 46 extend from the vertical wall part 39a of the decrimper 39.
  • the fiber bundle 32] which has been considerably, yet provisionally decrimped in the decrimper 39 and yarn guide pins 46 as will be more fully described hereinbelow, is passed between a pair of positively driven rollers 47 and 48 the rotational speed thereof being so selected bundle such as a 1l0%200% or so during passage therebundle 32b by shifting the relative phase of the constituent of between weight mass 38 and for shaping the fiber as to provide a certain amount of stretching to the fiber cut fibers.
  • FIG. 4 there is shown a yarn tangle 71 caught by the first eye 42.
  • the fiber bundle at 32b will lose its tension.
  • the weight mass 49 will act upon the tension bar 42 which will swivel in the clockwise direction, thus shifting from the position shown in FIG. 4 to that shown in FIG. 5. In this way, occasionally encountered loss of yarn tension can be effectively compensated, as is clearly understood by review of FIG. 5.
  • the fiber bundle 32c thus provisionally decrimped is threaded under a loosened condition through snail wire 59 and then twisted by means of ring 50, traveller 51 and spindle or cop 52 which are normally employed in conventional ring spinning frame although such twister can be replaced by any other known twisting mechanism.
  • the weight mass 49 is preferably selected to g. per denier of the yarn under treatment.
  • the numeral 61 denotes a package from which is drawn out a roving 62 of staple fibers through a pigtail guide 63 and fed to a pair of positively driven back rollers 64 and 65 initiating a drafting zone terminating into a pair of mutually cooperating apron bands 21 and 22' corresponding to those shown at 21 and 22, respectively in, FIG. 1.
  • Rollers 17', 18' and 20' having similar arrangement and function to those shown at 17, 18 and 20 guide and drive respective aprons 23' and 24 similar to those at 23 and 24in FIG. 1.
  • the provision of a cooling zone is provided by the chute 37 which is made of a metallic material such as steel, copper, brass or the like. Therefore, the crimped and heat set filament bundle or fleece delivered from the stufler box 30 and stays for several minutes until it is effectively cooled to approximately 50 C.
  • fan cooling appliances may be provided for accelerating this cooling effect. If, on the contrary, a hot fleece is subjected to a provisional decrimping stage, the once heat set crimps may be considerably lost and the desirous crimp effect will be substantially injured.
  • the provision of the provisionary decrimping zone formed by the decrimper 3-9 and thread guide pins 40 is also critical for carrying out the inventive process. If this zone should be omitted, the twisting efficiency will be considerably lowered by the very existence of too much crimps. Upon practice of the inventive process, the provisionarily smoothed-out crimps will naturally be recovered upon having been bobbined.
  • EXAMPLE 1 A bundle of 3000 nylon monofilaments oriented, each 3 denier, was introduced in the manner described hereinbefore into the stretch break zone 13-18 and treated so as to be subjected to a random fiber cutting under stretching amounting to 358%. Then, the thus fiber-Cut and stretched tow was further drafted at 17-27 composing the front or main drafting zone to 74% length so as to provide a fleece, 225 denier. This fleece was subjected to a slight stretching of 102% at 26-29, and forcedly delivered from the last delivery roller pair, having 4 mm. roller length, into stufiing box 30 which was kept at -1-60 C.
  • the thus crimped spun bulky yarn showed a crimp elongation rate 55-60% which means a remarkable result in the art.
  • EXAMPLE 2 Two bulky and twisted yarns prepared on the apparatus shown in FIG. 1 and processed in the same conditions referred to in the foregoing Example 1, where combined into a twin strand or two ply thread by tvw'sting the strands at and 350 turns per meter, respectively.
  • the resulted thread represented a highly intensified bulkiness and showed a crimp elongation rate of 60-80%.
  • This bulky thread was introduced into a channel-shaped receiver and stacked in loose state in the same direction and in parallel. When a load of 200 g./.16 cm. was applied to the stacked thread mass, the latter ShOlWCd a specific volume of 14.2 cm. /gr. which means a highly improved bulkiness.
  • the thus crimped spun bulky yarn showed a crimp elongation rate 48% which means a remarkable result in the art.
  • EXAMPLE 4 Two bulky and twisted yarns prepared on the apparatus shown in FIG. 1 and processed in the same conditions referred to in the foregoing Example 1, where combined into a twin strand thread by twisting the strands at 190 and 350 turns per meter, respectively.
  • the resulted thread showed a highly intensified bulkiness and represented a crimp elongation rate of 67.5%.
  • This bulky thread was introduced into a channel-shaped receiver and stacked in loose state in the same direction and in parallel. When a load of 200 g./ 16 cm. was applied to the stacked thread mass, the latter showed a specific volume of 13.0 cm. gr. which means a highly improved bulkiness. See also FIG. 7.
  • EXAMPLE 5 A roving, 0.3 gr./m., was prepared through a conventional spinning process, so as to comprise nylon staple fibers, having a mean length of 89 mm. Each of the fibers was of 3 denier.
  • the roving was then subjected to a stretch break at 13-18 in FIG. 1 as before under a draft of 115% and to a substantial draft of 1,045% at 19-27, to an additional and slight draft of 108% at 26-28, thereby providing a fleece of 225 denier.
  • This fleece was fed from the roller pair 28, 29, each having a 4 mm.-length, into the stufiing box 30, the wall temperature of which was kept at 130 C.
  • the thus crimped and heat-set fleece was treated further as before.
  • the twisting was .given at 350 turns per meter.
  • the testing results of this twisted yarn are enlisted in the following Table I.
  • Stuffing box temperature 120 C.
  • I Nyl0n crimped spun yarn.
  • II Tetron crimped spun yarn.
  • III Woollie nylon cut fiber yarn.
  • l Kind of yarn.
  • 2 Counts (metric).
  • the conventional comparative fibrous products were such that roving of Woollie nylon cut fibers were textured on a spinning frame comprising drafting means and twisting means.
  • the improved fibrous materials used in the tests were prepared in such a way that nylon filament tows, 3 denier per fil., overall counts 6,000 denier, not textured, or polyethylene terephthalate filaments, 3 denier per fil., overall counts 6,000 denier, were processed on the crimping and spinning frame shown in FIG. 1.
  • the yarn specimen was fixedly supported at its upper end and an initial load of 2/1000 gr. per denier specified was suspended at the lower end of the specimen. After lapse of 30 seconds, a mark was made given on the specimen just at the distance of 10 cm. which length was denoted :1.
  • the elastic recovery rate was increased favorably by substantially 30%. It will be further well understood, other various physical natures such as elongation, coefiicient of variation, number of crimps, and the like were also considerably improved.
  • FIG. 7 illustrates comparative bulkiness curves corresponding to the bulkiness values enlisted in the foregoing Table II, from which the superior results in bulkiness can be clearly ascertained.
  • control yarn was prepared in such a way that Woollie nylon, 70-denier, 17 filaments Were cut into four lengths of fiber, (A) 128 mm.; (B) 115 mm.; (C) 102 mm. and (D) 89 mm. These cut fibers (A), (B), (C) and (D) were mixed together in equal rates, and then spun on a conventional spinning machine into a continuous monopoly yarn.
  • a process for the manufacture of bulky and elastic and crimped spun yarn comprising: drafting a fibrous synthetic thermoplastic material comprising substantially parallel-arranged fibrous constituents in a drafting zone, discharging the thus drafted material under compression into a heated stuffing and crimping zone, thereby providing said drafted material with primary and secondary crimps, passing the thus drafted, crimped and heat-set material through a reserve zone for effective cooling, stretching the material taken out from said reserve zone from several percent to 200%, and finally twisting the stretched fibrous material to produce a twisted yarn.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US770687A 1968-10-30 1968-10-25 Process for the manufacture of crimped spun yarn Expired - Lifetime US3516241A (en)

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GB51528/68A GB1197538A (en) 1968-10-30 1968-10-30 Process for the manufacture of Crimped Spun Yarn

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CH (2) CH531585A (xx)
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780405A (en) * 1972-05-17 1973-12-25 Teijin Ltd Apparatus for supplying crimped synthetic filament tow to conveyor for heat treatment
US3831360A (en) * 1971-11-05 1974-08-27 Heberlein & Co Ag Texturized staple fiber structures
US3881230A (en) * 1973-12-13 1975-05-06 Du Pont Tow processing apparatus
US3945188A (en) * 1973-04-19 1976-03-23 Pierre Muller Method of spinning synthetic textile fibers
US4053420A (en) * 1975-04-14 1977-10-11 Dr. Eduard Fresenius Chemisch-Pharmazeutische Industrie Kg. Blood filter
US4667463A (en) * 1978-03-24 1987-05-26 Toray Industries, Inc. Process and apparatus for making fasciated yarn
US4854021A (en) * 1986-09-19 1989-08-08 Bayer Aktiengesellschaft Stufferbox crimper and process for preparing crimped synthetic fibers
US5025538A (en) * 1990-03-30 1991-06-25 Hoechst Celanese Corporation Apparatus for crimping tow including stuffer box, crimping rollers and molding rollers
US20060191117A1 (en) * 2003-11-19 2006-08-31 American Linc Corporation System, apparatus, and method of reducing production loss having compressor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141291C2 (de) * 1981-10-17 1983-11-03 Didier Engineering Gmbh, 4300 Essen "Verfahren und Reißkonverter zum Herstellen von Spinnbändern"
GB2187481B (en) * 1986-03-24 1989-12-06 Sipa Societa Italiana Prodotti Process for shrinking thermically shrinkable fibres

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2156723A (en) * 1937-06-23 1939-05-02 Ig Farbenindustrie Ag Crimping device
US2419320A (en) * 1943-05-08 1947-04-22 Lohrke James Louis Process and apparatus for producing staple fibers
US2611931A (en) * 1947-06-20 1952-09-30 Rieter Joh Jacob & Cie Ag Arrangement for producing a spun short-fiber yarn
US2784458A (en) * 1949-07-08 1957-03-12 Deering Milliken Res Corp Process and apparatus for converting continuous filamentary material into filaments of staple length
US2797444A (en) * 1951-11-14 1957-07-02 Toho Rayon Kk Manufacture of spun yarn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2156723A (en) * 1937-06-23 1939-05-02 Ig Farbenindustrie Ag Crimping device
US2419320A (en) * 1943-05-08 1947-04-22 Lohrke James Louis Process and apparatus for producing staple fibers
US2611931A (en) * 1947-06-20 1952-09-30 Rieter Joh Jacob & Cie Ag Arrangement for producing a spun short-fiber yarn
US2784458A (en) * 1949-07-08 1957-03-12 Deering Milliken Res Corp Process and apparatus for converting continuous filamentary material into filaments of staple length
US2797444A (en) * 1951-11-14 1957-07-02 Toho Rayon Kk Manufacture of spun yarn

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831360A (en) * 1971-11-05 1974-08-27 Heberlein & Co Ag Texturized staple fiber structures
US3780405A (en) * 1972-05-17 1973-12-25 Teijin Ltd Apparatus for supplying crimped synthetic filament tow to conveyor for heat treatment
US3945188A (en) * 1973-04-19 1976-03-23 Pierre Muller Method of spinning synthetic textile fibers
US3881230A (en) * 1973-12-13 1975-05-06 Du Pont Tow processing apparatus
US4053420A (en) * 1975-04-14 1977-10-11 Dr. Eduard Fresenius Chemisch-Pharmazeutische Industrie Kg. Blood filter
US4667463A (en) * 1978-03-24 1987-05-26 Toray Industries, Inc. Process and apparatus for making fasciated yarn
US4854021A (en) * 1986-09-19 1989-08-08 Bayer Aktiengesellschaft Stufferbox crimper and process for preparing crimped synthetic fibers
US5025538A (en) * 1990-03-30 1991-06-25 Hoechst Celanese Corporation Apparatus for crimping tow including stuffer box, crimping rollers and molding rollers
US20060191117A1 (en) * 2003-11-19 2006-08-31 American Linc Corporation System, apparatus, and method of reducing production loss having compressor
US7228604B2 (en) * 2003-11-19 2007-06-12 American Linc Corporation System, apparatus, and method of reducing production loss having compressor

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CH531585A (de) 1972-12-15
DE1805552A1 (de) 1970-05-21
CH1607768A4 (xx) 1972-08-31
GB1197538A (en) 1970-07-08

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