US3445996A - Preheating in yarn texturing - Google Patents

Preheating in yarn texturing Download PDF

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Publication number
US3445996A
US3445996A US636814A US3445996DA US3445996A US 3445996 A US3445996 A US 3445996A US 636814 A US636814 A US 636814A US 3445996D A US3445996D A US 3445996DA US 3445996 A US3445996 A US 3445996A
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United States
Prior art keywords
yarn
heater
texturing
twisted
untwisted
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Expired - Lifetime
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US636814A
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English (en)
Inventor
Emil J Berger Jr
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.)
Warner and Swasey Co
Turbo Machine Co
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Turbo Machine Co
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Assigned to WARNER & SWASEY COMPANY, THE reassignment WARNER & SWASEY COMPANY, THE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WARNER & SWASEY COMPANY,THE A DEL CORP.
Anticipated expiration legal-status Critical
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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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/028—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by twisting or false-twisting at least two filaments, yarns or threads, fixing the twist and separating the filaments, yarns or threads

Definitions

  • This invention relates to apparatus and method for texturing heat-settable yarn using false-twist methods.
  • the present invention is directed to a method and apparatus for teXturing yarns, particularly multi-filament heat-settable yarns.
  • the invention enables the yarns to be run through the texturing apparatus at substantially higher rates of speed than have heretofore been permissible. This desirable result is achieved by preheating two single ends of yarn under tension in untwisted substantially fiat condition, then in progressive steps smoothly twisting the heated filaments of the two ends together into a two-ply yarn, further heating the twisted two-ply yarn, cooling the yarn to set the twist, and finally separating and packaging the individual yarn ends.
  • an elongated arcuate contact heater having two parallel grooves.
  • the two ends of multi-filament yarn are pulled under tension, untwisted, and substantially flat and parallel, through the heater in contact with the arcuate surface of the first groove.
  • the two ends of heated yarn filaments pass through a twistbarrier device into the twist or texturing zone.
  • the twistbarrier device is preferably of an improved type which inhibits, in a series of stages, the twist from running back upstream into the first heater groove.
  • the two ends of yarn are pulled, twisted together and under tension, through the same nitecl States Patent 0 heater in the opposite direction, in contact with the arcuate surface of the second groove.
  • each filament of each end maintains substantially continuous contact with the arcuate surface of the heater as the ends are pulled therethrough.
  • each filament follows a helical path and each filament has considerably less than continuous surface contact with the arcuate heater.
  • a yarn end of untwisted, substantially fiat bend of filaments absorbs substantially more heat than does the same yarn end after being twisted together with another yarn end. It has been found that preheating the yarn ends prior to twisting enables the permissible running speed of the texturing apparatus to be very substantially increased.
  • FIG. 1 is a diagrammatic illustration of a texturing system utilizing the preheating technique of the present invention
  • FIG. 2 is a detail view, enlarged and in section, taken along the line 11-11 of FIG. 1.
  • the drawing illustrates one form of texturing apparatus embodying the present invention.
  • the novelty resides in preheating the single ends of yarn under tension before they are twisted together by a progressive or multistage type of assembly device. This allows the texturing equipment to be run at higher speeds.
  • the heater is vertically disposed, and the yarn paths are primarily vertical.
  • the yarns move downward toward the floor, then upward toward the ceiling, then downward toward the floor, then upward again toward the ceiling, and then downward again toward the floor.
  • This arrangement is advantageous in that considerably less floor space is required and the cost chargeable to the texturing operation is reduced.
  • the arrangement requires reasonably careful adjustment of the cornering or guide rollers about which the twisted yarn ends are pulled in the texturing zone.
  • two single ends of yarn 12 and 13 are shown supplied by separate supply packages 10 and 11.
  • the yarn ends 12 and 13 are shown passing downwardly from the supply packages 10 and 11 through a pretwister 14, around a pair of guide rollers 15, then up through guide means 16, over and about a yarntensioning device 17, over the guide roller 19, down through heater 30 along a first arcuate groove 31 thereof, through a twist barrier device B disposed below the heater 30, then upward as a twisted two-ply yarn 18 through the heater 30 along a second arcuate groove 32 thereof.
  • the twisted two-ply yarn then passes through suitable guide means not shown, over the left corner roll 42, the center corner roll 43, and the right corner roll 44, then down tothe separation device S.
  • the two ends of the two-ply yarn 18 are separated at pins 61, 62 into single ends 12, 13 which pass through the guide means 63 and 64, down through pairs of conical nip rolls 65 and 66, and then through the reciprocating traversing means 71, 72 to the take-up rolls 73 and 74. Between the upper end of the heater 30 and the separation device S, the two-ply twisted yarn 18 is cooled and thetwist is set.
  • the single ends of yarn 12 and 13 comprise wholly or predominantly hea -settable yarn filaments, such as continuous filaments of synthetic thermoplastic material.
  • suitable materials are nylon (polyhexamethylene adipamide), Dacron (polyethylene terephthalate), polypropylene, co-polymers of vinyl chloride, and others.
  • the single ends of yarn 12 and 13 are pretwisted together, as by a form of pretwist device 14 sh wn and described in Carruthers US. Patent 3,237,391.
  • the twistbarrier device B may take a number of forms, but preferably takes one of the various forms of two-stage or multi-stage twist-barrier device shown, described and claimed in the copending application of Emil I. Berger, Jr. and William Kirk Wyatt entitled Yarn Assembly Apparatus for False-Twisting Yarns filed May 8, 1967, Ser. No. 636,976, and assigned to the same assignee.
  • the device B is shown to comprise a pair of cross rollers 81, 82, mounted for free rotation in block 83, forming opposed crotches through which the two ends of yarn 12, 13 are pulled.
  • the filaments of the two-ply yarn 18 on the downstream side of the device B move along a helical path, and have a component of movement which is axial with respect to both the upper and lower of the crossed rollers 81 and 82. This introduces frictional components at both the upper and lower rollers, and this tends to inhibit, in stages, passage of the twist through the device B, but without putting high-friction forces into the yarn, because of the rotating rollers.
  • the yarn is pulled through the texturing apparatus by two pairs of conical nip rolls 65 and 66.
  • the conical rolls 6S and 66, the drive means therefor, the take-up rolls 73 and 74, the reciprocating traversing guide means 71 and 72, and the separating device S may, if desired, be similar to that shown and described in the patent application of William Kirk Wyatt entitled Yarn Separating Means, filed June 17, 1965, Ser. No. 464,797, and assigned to the assignee of the present application, now US. Patent 3,327,462.
  • the path of the two-ply twisted yarn 18 extends upward from the separation device S to the corner roller 44, then laterally to above the heater 30, and then downward through the second groove 32 of the heater 30 to the twist-barrier device B.
  • three ad justable freely-rotatable rollers 42, 43 and 44 are shown. Each of the rollers 42, 43 and 44 is so disposed angularly that the helix path of the twist is circumferential to the surface of the roller over which it is rolling.
  • each of the rollers 42, 43, 44 is mounted, by means not shown, to be fully adjustable as to angular and elevational positions.
  • Heater 30 is an elongated arcuate heater which may preferably consist of an arcuate tube 33 through which steam is passed.
  • the outer forward surface of the elongated tube 33 is provided with a pair of parallel lengthwise grooves 31 and 32.
  • the multi-filament yarn ends 12 and 13 are pulled downwardly in untwisted condition, side by side, throguh the left groove 31 and, after passing through the twist-barrier device B, are pulled upwardly, as a two-ply twisted yarn 18, through the right gro ve 32.
  • the grooves 31 and 32, particularly the groove 32 through which the twisted two-ply yarn is passed, tend to restrain the yarn from migrating laterally relative to the linear yarn path.
  • FIG. 2 is a diagrammatic representation, greatly magnified, which will assist in bringing out the advantages of preheating the multi-filament yarn ends in untwisted condition, prior to twisting. It will be assumed that an arcuate contact heater is used in both instances.
  • the individual yarn filaments follow a helical path, and when the two-ply twisted yarn 18 is pulled up through the heater 30, the plies will roll helically and a particular filament will only occasionally, and perhaps not at all, come into contact with the heated surface of the heater groove 32.
  • the filaments of the untwisted ends of yarn lie substantially flat, as is illustrated by the filaments in the left groove 31 of FIG. 2, and substantially all of the filaments will contact the heated surface of the heater groove 31 throughout the full length of the heater.
  • Pre-heating of the yarn ends, untwisted, as described above, enables the texturing machine to be operated at a substantially higher rate of speed.
  • the percentage increase is greater for the larger denier yarns.
  • the texturing apparatus can be operated at a rate of speed fifty percent faster than when the step of preheating the untwisted filaments is not performed.
  • the heated two-ply twisted yarn 18 is set in the cooling zone C which extends from the upper end of heater 30 to the separation device S.
  • the cooling zone C is merely indicated to be at the ambient temperature of the room in which the false-twisting apparatus is installed.
  • installation of mechanical cooling means may be necessary, at least in some instances.
  • tension control device in the path of the untwisted yarn ends between the heater groove 31 and the assembly device B.
  • a known form of tension control device is indicated in the drawing by the dot-and-dash rectangle 120.
  • the false twist will be inserted into the yarn at a point downstream from corner roller 44, rather than by the pretwist device 14.
  • Such a device is indicated in the drawing by the dot-and-dash rectangle 121.
  • Use of the separation device 8 will not be necessary, and only one pair of delivery rolls will be required.
  • twist-restraining means upstream from said separation means for inhibiting the twist from running upstream therebeyond
  • first and second heater means comprises a single elongated 'arcuate heater having first and second arcuate grooves therein, the untwisted substantially flat yarn filaments passing through said first groove in substantially continuous contact with the surface thereof.
  • Apparatus according to claim 2 characterized in that said elongated arcuate heater is disposed substantially vertically, in that a first cornering roller is provided above the heater for bending the heated twisted yarn about a 90 bend from a vertically upward direction to a generally lateral direction, and in that a second cornering roller is provided laterally from said first cornering roller for bending the twisted yarn about a bend from a generally lateral direction to a vertically downward di rection leading toward the separation means.
  • the method of texturing yarn which includes the steps of pulling two ends of multi-filament yarns with the respective yarns untwisted in relation to each other and substantially fiat and parallel through first contact heater means, assembling the yarn ends into a two-ply twisted yarn, and then pulling the two-ply twisted yarn through second contact heater means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US636814A 1967-05-08 1967-05-08 Preheating in yarn texturing Expired - Lifetime US3445996A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63681467A 1967-05-08 1967-05-08

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US (1) US3445996A (es)
ES (2) ES353866A1 (es)
FR (1) FR1565207A (es)
GB (1) GB1187532A (es)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518822A (en) * 1968-08-12 1970-07-07 Henry W Mccard Textile heater
US3530656A (en) * 1968-10-17 1970-09-29 Turbo Machine Co Multiple twist yarn texturizing apparatus and method
US3643412A (en) * 1969-07-18 1972-02-22 Nippon Rayon Kk Method and apparatus for the production of crimped yarns
US3678676A (en) * 1969-05-27 1972-07-25 Allied Chem Heat setting trapped pre-inserted twist
US3816988A (en) * 1971-02-03 1974-06-18 Bayer Ag Process and an apparatus for the production of synthetic, crimped, highly elastic endless yarn
US4120139A (en) * 1976-07-29 1978-10-17 Tatsuta Densen Kabushiki Kaisha Cable making apparatus
US4185451A (en) * 1977-02-22 1980-01-29 Phillips Petroleum Company Apparatus and process suitable for twist-drawing a yarn
US4192128A (en) * 1977-07-23 1980-03-11 Rieter Machine Works, Ltd. Thread deflecting element for a draw-texturing machine
US4771598A (en) * 1986-03-29 1988-09-20 Fag Kugelfischer Georg Schafer (Kgaa) Arrangement of the course of the thread in a texturing machine
US20060225400A1 (en) * 2001-12-05 2006-10-12 Sun Isle Usa, Llc Method of making furniture with synthetic woven material
US7476630B2 (en) 2003-11-18 2009-01-13 Casual Living Worldwide, Inc. Woven articles from synthetic self twisted yarns
US20130186152A1 (en) * 2011-07-20 2013-07-25 Oerlikon Textile Gmbh & Co. Kg. Yarn treatment chamber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920447C2 (de) * 1979-05-21 1982-06-16 Hoechst Ag, 6000 Frankfurt Vielstellige Vorrichtung zum Heißzwirnen

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890568A (en) * 1956-06-19 1959-06-16 British Celanese Production of voluminous yarn
US2987869A (en) * 1957-12-03 1961-06-13 Deering Milliken Res Corp Yarn crimping apparatus and methods
US3192697A (en) * 1963-08-26 1965-07-06 Turbo Machine Co Apparatus and method for false twisting yarns
US3270492A (en) * 1961-08-23 1966-09-06 Hosiery And Allied Trade Res A Production of yarns
US3289400A (en) * 1964-09-21 1966-12-06 Ernest Scragg & Sons Holdings Apparatus for producing modified twist crimped yarn
US3321904A (en) * 1963-11-26 1967-05-30 Heberlein Patent Corp Yarn threading process
US3355872A (en) * 1963-12-20 1967-12-05 Klinger Mfg Co Ltd Methods and apparatus for crimping yarns
US3395524A (en) * 1965-07-28 1968-08-06 Zinser Textilmaschinen Gmbh Method and apparatus for the production of crimped yarns
US3396524A (en) * 1966-03-01 1968-08-13 Scragg & Sons Yarn heating means in textile apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890568A (en) * 1956-06-19 1959-06-16 British Celanese Production of voluminous yarn
US2987869A (en) * 1957-12-03 1961-06-13 Deering Milliken Res Corp Yarn crimping apparatus and methods
US3270492A (en) * 1961-08-23 1966-09-06 Hosiery And Allied Trade Res A Production of yarns
US3192697A (en) * 1963-08-26 1965-07-06 Turbo Machine Co Apparatus and method for false twisting yarns
US3321904A (en) * 1963-11-26 1967-05-30 Heberlein Patent Corp Yarn threading process
US3355872A (en) * 1963-12-20 1967-12-05 Klinger Mfg Co Ltd Methods and apparatus for crimping yarns
US3289400A (en) * 1964-09-21 1966-12-06 Ernest Scragg & Sons Holdings Apparatus for producing modified twist crimped yarn
US3395524A (en) * 1965-07-28 1968-08-06 Zinser Textilmaschinen Gmbh Method and apparatus for the production of crimped yarns
US3396524A (en) * 1966-03-01 1968-08-13 Scragg & Sons Yarn heating means in textile apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518822A (en) * 1968-08-12 1970-07-07 Henry W Mccard Textile heater
US3530656A (en) * 1968-10-17 1970-09-29 Turbo Machine Co Multiple twist yarn texturizing apparatus and method
US3678676A (en) * 1969-05-27 1972-07-25 Allied Chem Heat setting trapped pre-inserted twist
US3643412A (en) * 1969-07-18 1972-02-22 Nippon Rayon Kk Method and apparatus for the production of crimped yarns
US3816988A (en) * 1971-02-03 1974-06-18 Bayer Ag Process and an apparatus for the production of synthetic, crimped, highly elastic endless yarn
US4120139A (en) * 1976-07-29 1978-10-17 Tatsuta Densen Kabushiki Kaisha Cable making apparatus
US4185451A (en) * 1977-02-22 1980-01-29 Phillips Petroleum Company Apparatus and process suitable for twist-drawing a yarn
US4192128A (en) * 1977-07-23 1980-03-11 Rieter Machine Works, Ltd. Thread deflecting element for a draw-texturing machine
US4771598A (en) * 1986-03-29 1988-09-20 Fag Kugelfischer Georg Schafer (Kgaa) Arrangement of the course of the thread in a texturing machine
US20060225400A1 (en) * 2001-12-05 2006-10-12 Sun Isle Usa, Llc Method of making furniture with synthetic woven material
US20060225399A1 (en) * 2001-12-05 2006-10-12 Sun Isle Usa, Llc Method of making furniture with synthetic woven material
US7441394B2 (en) 2001-12-05 2008-10-28 Casual Living Worldwide, Inc. Method of making furniture with synthetic woven material
US7448197B2 (en) 2001-12-05 2008-11-11 Casual Living Worldwide, Inc. Method of making furniture with synthetic woven material
US7476630B2 (en) 2003-11-18 2009-01-13 Casual Living Worldwide, Inc. Woven articles from synthetic self twisted yarns
US20130186152A1 (en) * 2011-07-20 2013-07-25 Oerlikon Textile Gmbh & Co. Kg. Yarn treatment chamber
US9109307B2 (en) * 2011-07-20 2015-08-18 Saurer Germany Gmbh & Co. Kg Yarn treatment chamber

Also Published As

Publication number Publication date
GB1187532A (en) 1970-04-08
FR1565207A (es) 1969-04-25
ES368188A1 (es) 1971-05-01
ES353866A1 (es) 1970-02-01

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AS Assignment

Owner name: WARNER & SWASEY COMPANY, THE, 11000 CEDAR AVENUE,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WARNER & SWASEY COMPANY,THE A DEL CORP.;REEL/FRAME:004365/0760

Effective date: 19850116