US3381461A - Textile processes and machines - Google Patents

Textile processes and machines Download PDF

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Publication number
US3381461A
US3381461A US330511A US33051163A US3381461A US 3381461 A US3381461 A US 3381461A US 330511 A US330511 A US 330511A US 33051163 A US33051163 A US 33051163A US 3381461 A US3381461 A US 3381461A
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United States
Prior art keywords
yarn
heated
roller
heating
false
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US330511A
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English (en)
Inventor
Alexander A Chubb
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Ernest Scragg and Sons Ltd
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Ernest Scragg and Sons 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
    • D02G1/02—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
    • D02G1/0206—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 false-twisting
    • D02G1/0266—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 false-twisting false-twisting machines
    • 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
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll

Definitions

  • the invention provides improvements in or relating to textile processes and machines.
  • the invention comprises a process for treating thermoplastic yarn comprising the step of advancing the yarn in contact with a surface moving with the yarn and heating the yarn at the surface. Said surface and/or means adjacent to said surface may impart heat to the yarn.
  • the surface may be curved, and may comprise the peripheral surface of a roller.
  • the yarn may be wrapped one or more times around the roller.
  • the surface may comprise the surface of a belt.
  • the yarn may be simultaneously in contact with said surface and a second surface.
  • One surface may comprise a peripheral surface of a roller and the second surface may comprise a surface of a belt running over the roller, the yarn passing between said surfaces.
  • Both surfaces may comprise peripheral surfaces of rollers.
  • the yarn may be subjected to pressures between the surfaces.
  • rollers When rollers are used, they may be nip rollers, and the yarn may touch the nip rollers only at the nip of the rollers.
  • the yarn may be twisted or false twisted.
  • the surface may comprise a twist stop.
  • Yarn may be in a twisted or an untwisted state while in contact with and while heated at the surface.
  • the process may comprise control of the heat imparted to the yarn at the surface.
  • the invention also comprises apparatus for treating thermoplastic yarn comprising a movable surface in contact with which yarn can be advanced, and means adapted to heat the yarn at the surface.
  • Said movable surface may comprise the periphery of a roller or of a belt.
  • the apparatus may comprise two movable surfaces between which yarn can be advanced.
  • the surfaces may "be adapted to exert pressure on a yarn between them, which pressure may be adjustable.
  • the apparatus may comprise a roller of which the peripheral surface is adapted to be heated by means located beneath said surface.
  • Said heating means may be electrical.
  • FIGURE 1 is a diagrammatic illustration of the apparatus.
  • FIGURE 2 is an axial section through a pair of nip rollers of the type which may find use in the apparatus of FIGURE 1, and
  • FIGURE 3 is a diagrammatic illustration of a roller and belt arrangement.
  • the apparatus illustrated in FIGURE 1 comprises a pair of nip rollers 11, 12, one of which may 'be a driven roller and the other an idler, which withdraw yarn 13 over a stabilizer 14- from a supply package 15.
  • the nip rollers are heated by electrical resistance heating elements 16.
  • the elements 16 are energised under the control of control 17 which includes temperature regulating means for maintaining: a constant temperature at the nip rollers 11, 12, a temperature-sensing thermoelement 18 sensing variations in the temperature and actuating the control means 17 so as to compensate automatically for such variations.
  • the thermoelement 18 can be adjusted so as to pre-select a desired temperature at the nip rollers 11, 12.
  • Yarn 13 coming from the nip rollers 11, 12 passes through a false-twisting device 19, the false twist imparted by this device running back only as far as the nip of the rollers 11, 12.
  • the yarn 13 cools in the cool- 'ing zone 21 (which may be simply an air space at room temperature). From this it will be clear that the twist is imparted while the yarn is hot, and that the yarn is subsequently cooled.
  • the yarn 13 untwists after passing the false-twisting device 19 and is forwarded by rollers 22, with a desired underfeed or overfeed, to wind-up means consisting of a package 23 which is rotated at constant peripheral speed by contact with a driving roller 24.
  • the yarn may touch the rollers only at the nip.
  • the heat thus imparted to the yarn 13 may not be sufficient for all desired treatments (although it will be sufiicient for certain treatments) and the yarn may then be wrapped around a portion of the periphery of each or either roller.
  • Certain advantageous effects are to be secured thereby. For example, if the yarn is wrapped around a portion of the periphery of one roller before it passes through the nip, then, depending of course on the amount of wrap, the temperature of the roller and the yarn tension, the yarn may be subjected to heat treatment before the insertion of twist.
  • the yarn is Wrapped after passing through the nip, it is treated for a longer period, but there may be a tendency for some twist to be stopped on the roller surface if the pressure of the yarn on the surface and/or the amount of wrap are too high.
  • the yarn may, again, be wrapped one or more times completely around the periphery of each or either roller, and in one such arrangement may be led away from the surface of a roller and through a tensioner before returning to the surface of the roller, whereby the temperature of the yarn may undergo a temporary change, and/or the tension in the yarn may be altered.
  • the nip rollers are shown in greater detail in FIG- URE 2.
  • the lower roller 25 is driven by a gear wheel 26, and is mounted on roller bearings 27 for rotation on a hollow shaft 28.
  • the upper roller 29 is mounted on a self aligning ball bearings 31 for rotation on a second hollow shaft 32.
  • the shaft 32 is urged toward the shaft 28 by nonillustrated means utilising, for example the weight of the roller 29 or extra weighting or resilient loading means.
  • the loading means may be adapted to apply any desired constant load which can be pro-selected for treating a particular material.
  • the rollers 25, 29 are of hollow construction, comprising side walls 33 joined by a peripheral wall 34 which has good heat conducting properties, preferably a metal such as stainless steel.
  • each shaft 28, 32 Carried fixedly on each shaft 28, 32, and located, respeotively, in each roller 25, 29, are disc-like supporting members 35 which carry at their peripheries circular electrical resistance heating elements 36, the current-carrying wires 37 for which lie in grooves 38 provided in the members 35, and these wires 37 are led out of the interiors of the rollers 25, 29, through the hollow shafts 28, 32.
  • FIGURE 3 illustrates an arrangement comprising a roller 41 which may be generally similar to either of the rollers shown in FIGURE 2, including electrical heating means 42.
  • a belt 43 passes over part of the peripheral surface 44 of the roller 41 and over a pair of further rollers 45 and a tensioning roller 46.
  • the rollers 45 may be urged against the surface 44 by spring or other means (not shown) to exert pressure on a yarn 47 passing between the belt 43 and the surface 44.
  • the yarn may pass over only that part of the surface 44 which is engaged by the belt, or it may pass over a greater part, or it may be Wrapped one or more times around the periphery of the roller 44.
  • This arrangement may be substituted in the apparatus shown in FIGURE 1, for the nip rollers 11, 12.
  • a single roller without a co-operating belt which may be similar to the rollers above described, may be used for the process according to the invention, the yarn being wrapped around its periphery to an extent depending upon the heating effect required.
  • a single movable belt surface with or without co-operating rollers may be used.
  • the belt may be heated on its run in contact with the yarn or on a run on which the yarn does not contact the belt, by passing through a zone in which heat is imparted to the belt from an external source, or by heating means contained within the belt itself.
  • a textile machine may comprise a plurality of apparatus as hereinbefore described located side by side, the heating of the moving surfaces being controlled by a common pre-settable device and the temperature at each moving surface being compared with and adjusted to that of a master potentiometer.
  • a method of producing false-twisted thermoplastic yarn comprising the steps of advancing the yarn along a predetermined path; heating the yarn by passing the same into contact with a heated surface moving with the yarn so that said yarn is heated without substantial friction between said yarn and said heated surface engaging and moving with the yarn and simultaneously the engagement between said yarn and said heated surface prevents any falsetwist imparted to the yarn after heating to run back beyond said heated surface; and thereafter falsetwisting the yarn while the same is in heated state.
  • a method of producing false-twisted thermoplastic yarn comprising the steps of advancing the yarn along a predetermined path; heating the yarn by passing the same into contact with a heated curved surface moving with the yarn so that said yarn is heated without substantial friction between said yarn and said heated surface engaging and moving with the yarn and simultaneously the engagement between said yarn and said heated surface prevents any false-twist imparted to the yarn after heating to run back beyond said heated surface; and thereafter false-twisting the yarn while the same is in heated state.
  • a method of producing false-twisted thermoplastic yarn comprising the steps of advancing the yarn along a predetermined path; heating the yarn by passing the same into contact with a heated surface which is continuously angularly displaced in direction of the advancement of moving with the yarn so that said yarn is heated without substantial friction between said yarn and said heated surface engaging and moving with the yarn and simultaneously the engagement between said yarn and said heated surface prevents any false-twist imparted to the yarn after heating to run back beyond said heated surface; and thereafter false-twisting the yarn while the same is in heated state.
  • a method of producing false-twisted thermoplastic yarn comprising the steps of advancing the yarn along a predetermined path; heating the yarn by passing the same between and into contact with two opposed heated surfaces moving with the yarn so that said yarn is heated without substantial friction between said yarn and said opposed heated surfaces engaging and moving with the yarn and simultaneously the engagement between said yarn and said opposed heated surfaces prevents any falsetwist imparted to the yarn after heating to run back beyond said opposed heated surfaces; and thereafter falsetwisting the yarn while the same is in heated state.
  • Apparatus for producing false-twisted thermoplastic yarn from a supply of yarn comprising yarn forwarding means for forwarding the yarn along a predetermined path; yarn take-up means arranged downstream of said forwarding means for receiving the yarn; yarn-heating means arranged intermediate said forwarding means and said take-up means and comprising a movable heated surface arranged in such path so as to be contacted by the yarn and being movable therewith so that said yarn is heated without substantial friction between said yarn and said heated surface engaging and moving with the yarn and simultaneously the engagement between said yarn and said heated surface prevents any false-twist imparted to the yarn after heating to run back beyond said heated surface; and false-twisting means arranged inter mediate said heating means and said take-up means for imparting a false-twisted to the yarn while the yarn is in heated state from contact with said surface.
  • said yarn-heating means comprises at least one roller, and wherein said surface is a peripheral surface of said roller.
  • said yarnheating means comprises at least one endless turning belt, and wherein said surface is a surface of said belt.
  • said heating means comprises a pair of nip rollers, said sur- References Cited 5 UNITED STATES PATENTS 2/ 1954 Grettve 264-282 9/ 1961 Evans 57-157 9/1965 Poster et a1 67-34 7/1950 Poster et a1. 28-72 10 Fitzgerald 28-72 Harrison et a1. 264-284 Johnson 264-284 Peck 264-288 Head et a1 264-290 An 264-290 ALEXANDER H. BRODMERKEL, Primary Examiner. I. H. WOO, B. SNYDER, Assistant Examiners.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US330511A 1962-11-20 1963-11-20 Textile processes and machines Expired - Lifetime US3381461A (en)

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Application Number Priority Date Filing Date Title
GB4393962 1962-11-20

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US3381461A true US3381461A (en) 1968-05-07

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DE (1) DE1435674A1 (de)
ES (1) ES293694A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539680A (en) * 1967-08-07 1970-11-10 Teijin Ltd Process and apparatus for drawing polyester filaments
US3774388A (en) * 1969-11-03 1973-11-27 Turbo Machine Co Method for producing synthetic torque yarns
US3796036A (en) * 1970-11-21 1974-03-12 Scragg & Sons Method of processing yarn
WO2000014313A1 (de) * 1998-09-03 2000-03-16 Retech Aktiengesellschaft Texturierverfahren

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442598A (en) * 1946-06-25 1948-06-01 Boston Woven Hose & Rubber Co Process of finishing plastic sheet material
US2515299A (en) * 1948-10-19 1950-07-18 Us Rubber Co Apparatus for imparting false twist to strands
US2551005A (en) * 1946-12-04 1951-05-01 Goodrich Co B F Surface finishing thermoplastic materials
US2642625A (en) * 1950-06-23 1953-06-23 Sprague Electric Co Process for producing thin polytetrahaloethylene films
US2667910A (en) * 1945-07-12 1954-02-02 Grettve Karl Einar Lage Apparatus and method for creping paper
US2869972A (en) * 1952-12-31 1959-01-20 Eastman Kodak Co Method of treating yarns and filaments and products produced thereby
US3001355A (en) * 1959-06-08 1961-09-26 Deering Milliken Res Corp Method and apparatus for processing yarn
US3022565A (en) * 1958-09-04 1962-02-27 Chemstrand Corp Method of texturing yarns
US3068530A (en) * 1960-11-03 1962-12-18 Du Pont Improved method of operating a heated draw pin with synthetic yarns
US3204396A (en) * 1961-08-21 1965-09-07 Us Rubber Co Method for texturing thermoplastic yarn and apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667910A (en) * 1945-07-12 1954-02-02 Grettve Karl Einar Lage Apparatus and method for creping paper
US2442598A (en) * 1946-06-25 1948-06-01 Boston Woven Hose & Rubber Co Process of finishing plastic sheet material
US2551005A (en) * 1946-12-04 1951-05-01 Goodrich Co B F Surface finishing thermoplastic materials
US2515299A (en) * 1948-10-19 1950-07-18 Us Rubber Co Apparatus for imparting false twist to strands
US2642625A (en) * 1950-06-23 1953-06-23 Sprague Electric Co Process for producing thin polytetrahaloethylene films
US2869972A (en) * 1952-12-31 1959-01-20 Eastman Kodak Co Method of treating yarns and filaments and products produced thereby
US3022565A (en) * 1958-09-04 1962-02-27 Chemstrand Corp Method of texturing yarns
US3001355A (en) * 1959-06-08 1961-09-26 Deering Milliken Res Corp Method and apparatus for processing yarn
US3068530A (en) * 1960-11-03 1962-12-18 Du Pont Improved method of operating a heated draw pin with synthetic yarns
US3204396A (en) * 1961-08-21 1965-09-07 Us Rubber Co Method for texturing thermoplastic yarn and apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539680A (en) * 1967-08-07 1970-11-10 Teijin Ltd Process and apparatus for drawing polyester filaments
US3774388A (en) * 1969-11-03 1973-11-27 Turbo Machine Co Method for producing synthetic torque yarns
US3796036A (en) * 1970-11-21 1974-03-12 Scragg & Sons Method of processing yarn
WO2000014313A1 (de) * 1998-09-03 2000-03-16 Retech Aktiengesellschaft Texturierverfahren
CN1097103C (zh) * 1998-09-03 2002-12-25 雷特克股份公司 纱线变形的方法和装置
US6609277B1 (en) 1998-09-03 2003-08-26 Retech Aktiengesellschaft Texturing method

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Publication number Publication date
DE1435674A1 (de) 1969-01-23
ES293694A1 (es) 1964-03-01

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