US3114999A - Method and apparatus for treating and drawing synthetic filament yarns - Google Patents

Method and apparatus for treating and drawing synthetic filament yarns Download PDF

Info

Publication number
US3114999A
US3114999A US72137A US7213760A US3114999A US 3114999 A US3114999 A US 3114999A US 72137 A US72137 A US 72137A US 7213760 A US7213760 A US 7213760A US 3114999 A US3114999 A US 3114999A
Authority
US
United States
Prior art keywords
yarn
treating
steam
draw
roll
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.)
Expired - Lifetime
Application number
US72137A
Other languages
English (en)
Inventor
Alva C Coggeshall
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.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL271908D priority Critical patent/NL271908A/xx
Application filed by Monsanto Chemicals Ltd filed Critical Monsanto Chemicals Ltd
Priority to US72137A priority patent/US3114999A/en
Priority to GB41623/61D priority patent/GB930775A/en
Priority to FR880130A priority patent/FR1307020A/fr
Priority to BE610819A priority patent/BE610819A/fr
Priority to CH1382061A priority patent/CH389149A/fr
Priority to DEC25623A priority patent/DE1245031B/de
Application granted granted Critical
Publication of US3114999A publication Critical patent/US3114999A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/225—Mechanical characteristics of stretching apparatus
    • 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
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/222—Stretching in a gaseous atmosphere or in a fluid bed

Definitions

  • This invention realtes to a method and apparatus for treating and drawing synthetic filament yarns formed from a thermoplastic polymer such as nylon. More particularly, this invention relates to a novel method and apparatus of the above type utilizing porous means to steam treat and to localize the stretch point of yarn, concurrently, for improving drawing performance and reducing the incident of yarn breakage during the drawing process.
  • Newly formed nylon yarn produced by melt spinning is known to have relatively low strength.
  • undrawn yarn is stretched or drawn whereby molecules forming the yarn are aligned or oriented in the general direction of the yarn axis.
  • a feed roll and a draw roll driven at different peripheral speeds relative to each other and geared to a predetermined draw ratio, are employed to draw yarn.
  • a brake device is positioned between the feed and draw rolls to localize the stretching point of the yarn.
  • Yarn drawn in the usual manner is subjected to high stresses and frequently the drawing load applied exceeds the breaking load of the yarn, in which case, the yarn is broken, generally, in the vicinity of the brake device. Yarn breakage interrupts the drawing process and causes costly delay in operation.
  • vapor in the form of steam applied to the yarn at the localized stretch point will produce beneficial changes therein, improving its drawing performance such that the frequency of yarn breakage is reduced.
  • Another object is to provide a method of treating nylon yarn with steam to render the yarn more resistant to breaking by passing the yarn through a steam zone at the point of localized stretching thereof.
  • a still further object is to provide a novel method and apparatus for simultaneously steam treating and drawing synthetic textile yarns formed from a thermoplastic polymer such as nylon by simple and inexpensive means to minimize yarn breakage.
  • the apparatus embodying the invention comprises two spaced rolls, each positively driven at different peripheral speeds relative to each other, and brake means interposed in the path of a yarn laced between the rolls, said brake means being formed of a porous material resistant to abrasion having an inlet and an outlet therein for conducting steam from 3,114,999 Patented Dec. 24, 1963 a suitable source thereto and removing condensate therefrom, respectively.
  • the slower positively driven roll cooperates with a corresponding rotatable roller arranged in parallel and contacting relation therewith to provide a feed roll assembly for imparting an initial predetermined rate of travel to a yarn passed between the rolls of the assembly, and preferably, a spacer roll is positioned near the faster positively driven roll to prevent yarn wrapped around the spacer roll and the faster driven roll from becoming superimposed.
  • said brake means when the inlet of said brake means is pressurized with steam, said brake means will provide a steam zone or area thereabout since steam will pass through the pores of the wall of the brake means and escape into the surrounding atmosphere.
  • the novel method for drawing and treating nylon yarn comprises delivering yarn at one rate of speed to a draw zone, simultaneously localizing the stretch point of the yarn and passing the yarn through a steam area within the draw zone, withdrawing the yarn at a second higher rate of speed from the draw zone, and taking up the yarn in an orderly manner whereby the drawing performance of the yarn is improved and the incident of yarn breakage is reduced.
  • FIGURE 1 is a schematic view showing, in perspective, the novel apparatus comprising the invention in operative arrangement
  • FIGURE 2 is a longitudinal sectional view of the draw pin 9, shown in FIGURE 1, drawn to a larger scale.
  • FIGURE 1 the novel apparatus for treating and drawing yarn embodying the invention is shown in FIGURE 1 with the respective components thereof arranged in the positions in which they would ordinarily be suitably mounted on a framework, omitted for purposes of simplicity.
  • An undrawn filament yarn 1, of polymeric composition such as nylon and supplied from a supply package or bobbin 2 is shown laced within the novel apparatus according to the method of the invention to be explained hereinafter.
  • a snubbing bar 3 of conventional type may be suitably mounted near bobbin 2 to assist in maintaining an orderly and uniform supply of yarn.
  • a pigtail guide 4 is positioned below bar 3 and serves to guide the yarn in its downward path to a feed roll assembly 5.
  • the feed roll assembly 5 includes a pair of parallel rotatably mounted corresponding rolls 6 and 7, roll 7 being driven by suitable power means, not shown, at a predetermined rate of speed. Rolls 6 and 7 have peripheral surface contact therebetween so as to nip the yarn passed between the rolls for imparting an initial rate of speed or travel, corresponding to the speed of driven roll 7, to the yarn and to cause roll 6 to rotate correspondingly with roll '7 but, in a reverse direction therefrom.
  • a draw roll 8 is rotatably mounted below feed roll assembly 5 and is driven by suitable power means, not shown, at a higher peripheral rate of speed than that of roll 7, and applies a stretching or pulling force to the yarn when the latter is laced from the feed roll assembly 5 to and around roll 8. Drawing or stretching produces molecular orientation within and increases the tensile strength of the yarn.
  • Member 9 includes a tubular element 10 formed of a porous material resistant to abrasion and a pair of end caps 11 having transverse openings therethrough. End caps 11 are held in tightly clamped relation on the ends of element 10 by a nut 12 having screw-threaded engagement with one end of an elongated bolt 13 extending axially through element 10 and end caps 11.
  • Line 14 is normally supplied with steam from a suitable source, the steam flowing into the interior of element 10 and forming a steam zone surrounding the immediate exterior area of the draw pin by passing through the pores in the wall of element It).
  • Line 15 is provided to carry off condensate forming in the interior of element 10 and preferably, does not extend inwardly thereof as far as line 14 does so as to prevent accumulation of condensate within element 10.
  • Draw pin 9 is normally mounted in an inclined position in relation to the axis of roll 7 to prevent the wraps of yarn passed around member 9 from becoming superimposed and is positioned so that line 15 is below line 14 to permit condensate to flow by gravity to line 15.
  • Draw pins of the ordinary solid wall type are generally manufactured from a material resistant to abrasion hearing the trademark Alsimag, the principal ingredient of the material being aluminum oxide or titanium dioxide.
  • Alsimag is here mentioned as one material from which tubular element 10 may be manufactured since Alsimag can be produced in a porous form while still retaining the quality of abrasion resistance.
  • an inclined rotatable spacer roll 16 suitably mounted at one end thereof and positioned near draw roll 8 is provided to prevent the yarn from wrapping in superimposed manner on draw roll 8.
  • a ring twisting assembly 17 is provided to collect the yarn and comprises a pirn 18 adapted to be rotated by suitable means and a vertically reciprocable spinning ring 19 carrying a ring traveler 20 adapted to revolve freely about the pirn 18 as the yarn is twisted a desired amount and wound on the pirn.
  • a guide 21 is interposed between draw roll 8 and as sembly 17 to guide the yarn to the assembly 17.
  • line 14 is pressurized with steam from a suitable source.
  • Yarn 1 is withdrawn from one end of bobbin 2 and threaded conventionally around snubber bar 3, then led through pigtail 4, and passed between rolls 6 and 7 of assembly 5, the yarn being caught or nipped between rolls 6 and 7 and given an initial traveling speed corresponding to the predetermined speed of driven roll 7.
  • the yarn is delivered to and led around draw pin 9 a desired number of turns.
  • the yarn passes through a controlled steam area surrounding pin 9 since the steam supplied to line 14 will enter draw pin 9 and flow to the exterior thereof through the pores of element 10.
  • the steam acts to plasticize and condition the yarn for improving its drawing performance.
  • the yarn is directed to and around draw roll 8 and spacer roll 16, collectively, a desired number of turns for imparting a greater speed of travel to the yarn since roll 3 is driven at a higher predetermined speed than roll 7 and according to a predetermined draw ratio.
  • the invention provides a novel method and apparatus to steam treat a synthetic yarn while at the same time drawing the yarn, by simple and inexpensive means.
  • Apparatus for treating and drawing yarn comprising in combination stationary porous snubbing means formed of a material resistant to abrasion and having pores of a perviousness to permit flow of steam therethrough, conduit means associated with said oprous snubbing means for supplying a treating agent interiorly thereof, the treating agent normally flowing through said pores in said porous snubbing means to the exterior thereof to form a treating zone thereabout, feed roll means for forwarding the yarn longitudinally at one rate of speed to said porous snubbing means, draw roll means for withdrawing the yarn from said porous snubbing means at a second increased rate of speed for stretching the yarn, said yarn normally being laced to slidably engage said porous snubbing means so as, simultaneously, to localize the stretch of the yarn and to uniformly treat the yarn by direct application of the treating agent thereto.
  • porous snubbing means comprises a porous snubbing pin.
  • Apparatus for treating and drawing yarn comprising in combination a hollow porous draw pin formed of a material resistant to abrasion and having pores of a perviousness to permit flow of steam therethrough, a supply conduit having communication with the interior of said hollow porous draw pin and normally being charged with a supply of steam for delivering steam to said hollow porous draw pin, the steam normally flowing through said pores in said hollow porous draw pin to the exterior thereof to form a steam zone thereabout, a discharge conduit having communication with the interior of said hollow porous draw pin and serving to remove condensate from the interior thereof, feed roll means for advancing said yarn longitudinally at one rate of speed to said hollow porous draw pin, draw roll means for withdrawing the yarn from said hollow porous draw pin at another rate of speed faster than said one rate of speed for stretching the yarn, said yarn normally being laced to frictionaly engage said hollow porous draw pin so as, simultaneously, to localize the stretch of the yarn and to treat the yarn by direct application of steam thereto.
  • Apparatus for treating and drawing yarn comprising in combination, a draw pin having a tubular member formed of a porous material resistant to abrasion and having pores of a perviousness to permit flow of steam therethrough, a pair of end caps each arranged at a respective end of said tubular member, clamping means for securing said end caps on said tubular member, a supply conduit having communication with the interior of said tubular member and normally being charged with a supply of steam for conducting steam to said tubular member, a discharge conduit having communication with the interior of said tubular member and serving to remove condensate from the interior thereof, feed roll means for advancing said yarn longitudinally at one rate of speed to said draw pin, draw roll means for withdrawing the yarn from said draw pin at another rate of speed faster than said one rate of speed for stretching the yarn, said yarn normally being laced to frictionally engage said tubular member so as, simultaneously, to localize the stretch of the yarn and to treat the yarn by direct application of steam thereto, and an inclined spacer roll positioned near said draw
  • a method for treating with steam synthetic filament yarn undergoing snubbing comprising delivering the yarn at a first rate of speed to a draw zone, withdrawing the yarn at a second increased rate of speed from said draw zone so that the yarn is stretched a predetermined amount within said draw zone, snubbing the travel of the yarn between said delivery and Withdrawal points by slidable engagement with a stationary porous surface, applying steam directly and uniformly to the yarn through said porous surface at the point of said slidable engagement of the yarn therewith, and taking the yarn up in an 15 orderly manner after being withdrawn from said draw zone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US72137A 1960-11-28 1960-11-28 Method and apparatus for treating and drawing synthetic filament yarns Expired - Lifetime US3114999A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL271908D NL271908A (enrdf_load_stackoverflow) 1960-11-28
US72137A US3114999A (en) 1960-11-28 1960-11-28 Method and apparatus for treating and drawing synthetic filament yarns
GB41623/61D GB930775A (en) 1960-11-28 1961-11-21 Method and apparatus for treating and drawing synthetic filament yarns
FR880130A FR1307020A (fr) 1960-11-28 1961-11-27 Procédé d'étirage et de traitement par la vapeur des fibres synthétiques et broche d'étirage utilisée
BE610819A BE610819A (fr) 1960-11-28 1961-11-27 Procédé d'étirage et de traitement par la vapeur des fibres synthétiques et broche d'étirage utilisée
CH1382061A CH389149A (fr) 1960-11-28 1961-11-28 Procédé pour traiter un fil de filaments synthétiques et appareil pour la mise en oeuvre de ce procédé
DEC25623A DE1245031B (de) 1960-11-28 1961-11-28 Vorrichtung zum Strecken synthetischer Faeden

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72137A US3114999A (en) 1960-11-28 1960-11-28 Method and apparatus for treating and drawing synthetic filament yarns

Publications (1)

Publication Number Publication Date
US3114999A true US3114999A (en) 1963-12-24

Family

ID=22105826

Family Applications (1)

Application Number Title Priority Date Filing Date
US72137A Expired - Lifetime US3114999A (en) 1960-11-28 1960-11-28 Method and apparatus for treating and drawing synthetic filament yarns

Country Status (6)

Country Link
US (1) US3114999A (enrdf_load_stackoverflow)
BE (1) BE610819A (enrdf_load_stackoverflow)
CH (1) CH389149A (enrdf_load_stackoverflow)
DE (1) DE1245031B (enrdf_load_stackoverflow)
GB (1) GB930775A (enrdf_load_stackoverflow)
NL (1) NL271908A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296786A (en) * 1964-11-06 1967-01-10 Turbo Machine Co Apparatus for processing a twisted bulky yarn
US3327461A (en) * 1965-06-17 1967-06-27 Turbo Machine Co Apparatus and method for producing false twist in yarn
US3408251A (en) * 1964-01-10 1968-10-29 Davies Stanley Tows of synthetic filaments and method for making the same
US3416188A (en) * 1964-08-25 1968-12-17 Asahi Chemical Ind Apparatus for heat-treating thermoplastic synthetic fibers
US3441993A (en) * 1966-11-08 1969-05-06 Willem Stelwagen Apparatus for heat-treating travelling threadlike products
US3495390A (en) * 1968-06-20 1970-02-17 Stevens & Co Inc J P False twisting method and apparatus
US4054025A (en) * 1975-07-23 1977-10-18 Bayer Aktiengesellschaft Process for the production of filament yarns with statistically distributed, broken individual filaments
US4644621A (en) * 1983-01-31 1987-02-24 Allied Corporation Chilled yarn guide
US4825517A (en) * 1984-11-15 1989-05-02 Phillips Petroleum Company Apparatus for drawing and interlacing
US5083419A (en) * 1987-06-15 1992-01-28 Amann Und Sohne Gmbh & Co. Method of producing a yarn and an apparatus for carrying out this method
CN110815112A (zh) * 2019-10-29 2020-02-21 上海宝冶集团有限公司 一种高温高压蒸汽管道冷紧口安装方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309771A (en) * 1939-09-12 1943-02-02 Ind Rayon Corp Means for treating thread or the like
US2491569A (en) * 1948-06-17 1949-12-20 Du Pont String-up device
US2778058A (en) * 1950-01-11 1957-01-22 Inventa Ag Filament stretching apparatus
US2864931A (en) * 1954-01-04 1958-12-16 Universal Winding Co Heating device for use in processing textile yarns
GB806532A (en) * 1955-12-23 1958-12-31 Ici Ltd Process for drawing filaments
US2874410A (en) * 1954-06-30 1959-02-24 Du Pont Apparatus for uniformly drawing a plurality of filaments
CH338922A (de) * 1955-11-30 1959-06-15 Nippon Rayon Company Limited Verfahren zur Herstellung von Textilfäden aus synthetischen linearen Polyamiden durch Verstrecken
US2894802A (en) * 1955-11-16 1959-07-14 American Viscose Corp Method of forming crimped artificial filaments

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE489014C (de) * 1925-02-14 1930-01-11 Herminghaus & Comp G M B H Spule zum Waschen von Kunstfaeden, Baendchen u. dgl. aus Celluloseloesungen mittels Druckgefaelles
NL155414B (nl) * 1947-05-30 Dassault Electronique Frequentiedetector.
DE969509C (de) * 1951-10-16 1958-06-12 Chemstrand Corp Verfahren und Vorrichtung zur Dampfbehandlung thermoplastischer, synthetischer Faeden

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309771A (en) * 1939-09-12 1943-02-02 Ind Rayon Corp Means for treating thread or the like
US2491569A (en) * 1948-06-17 1949-12-20 Du Pont String-up device
US2778058A (en) * 1950-01-11 1957-01-22 Inventa Ag Filament stretching apparatus
US2864931A (en) * 1954-01-04 1958-12-16 Universal Winding Co Heating device for use in processing textile yarns
US2874410A (en) * 1954-06-30 1959-02-24 Du Pont Apparatus for uniformly drawing a plurality of filaments
US2894802A (en) * 1955-11-16 1959-07-14 American Viscose Corp Method of forming crimped artificial filaments
CH338922A (de) * 1955-11-30 1959-06-15 Nippon Rayon Company Limited Verfahren zur Herstellung von Textilfäden aus synthetischen linearen Polyamiden durch Verstrecken
GB806532A (en) * 1955-12-23 1958-12-31 Ici Ltd Process for drawing filaments

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408251A (en) * 1964-01-10 1968-10-29 Davies Stanley Tows of synthetic filaments and method for making the same
US3416188A (en) * 1964-08-25 1968-12-17 Asahi Chemical Ind Apparatus for heat-treating thermoplastic synthetic fibers
US3296786A (en) * 1964-11-06 1967-01-10 Turbo Machine Co Apparatus for processing a twisted bulky yarn
US3327461A (en) * 1965-06-17 1967-06-27 Turbo Machine Co Apparatus and method for producing false twist in yarn
US3441993A (en) * 1966-11-08 1969-05-06 Willem Stelwagen Apparatus for heat-treating travelling threadlike products
US3495390A (en) * 1968-06-20 1970-02-17 Stevens & Co Inc J P False twisting method and apparatus
US4054025A (en) * 1975-07-23 1977-10-18 Bayer Aktiengesellschaft Process for the production of filament yarns with statistically distributed, broken individual filaments
US4644621A (en) * 1983-01-31 1987-02-24 Allied Corporation Chilled yarn guide
US4825517A (en) * 1984-11-15 1989-05-02 Phillips Petroleum Company Apparatus for drawing and interlacing
US5083419A (en) * 1987-06-15 1992-01-28 Amann Und Sohne Gmbh & Co. Method of producing a yarn and an apparatus for carrying out this method
CN110815112A (zh) * 2019-10-29 2020-02-21 上海宝冶集团有限公司 一种高温高压蒸汽管道冷紧口安装方法

Also Published As

Publication number Publication date
BE610819A (fr) 1962-05-28
GB930775A (en) 1963-07-10
CH389149A (fr) 1965-03-15
NL271908A (enrdf_load_stackoverflow)
DE1245031B (de) 1967-07-20

Similar Documents

Publication Publication Date Title
US2515299A (en) Apparatus for imparting false twist to strands
US3114999A (en) Method and apparatus for treating and drawing synthetic filament yarns
GB518710A (en) Improvements in synthetic filaments, fibres and articles made therefrom
US3165881A (en) Production of high bulk yarns
US2747359A (en) Process and apparatus for winding heavy denier yarn packages
US3287888A (en) Apparatus for the treatment of synthetic filaments
US2890568A (en) Production of voluminous yarn
US3124632A (en) Phocess for treating nylon
DE1785707B2 (de) Verfahren zur herstellung von garn aus schlichtstofffreien stapelfasern
GB286603A (en) Process of and apparatus for making bands of artificial fibres
US2946181A (en) Production of twistless yarns by direct spinning to tow, sizing the tow, false twisting and winding
US4364225A (en) Machine for producing self-twisting yarns
US2061021A (en) Elastic yarn and method of making the same
GB1424989A (en) Method of and apparatus for producing plied bulked continuous filament yarn
US2398787A (en) Method of and apparatus for treating yarn or cord
US3137033A (en) Apparatus for drawing thread-shaped products
US2946180A (en) Production of twistless staple fiber yarns by sizing untwisted bundles, false twisting and winding
US3613348A (en) Flyer spindle for two-for-one twisting machine
US2202031A (en) Method of treating yarn
US2030252A (en) Manufacture of textile materials
US3177642A (en) Combined spinning and twisting frame and method for producing twisted yarn
US2738144A (en) Textile package
US2258139A (en) Apparatus for curling yarn
US3968547A (en) Yarn singeing machine having a cleaning device
US2232542A (en) Process for the production of artificial thread