EP0865522B1 - Verfahren zur herstellung von permanent gekräuselten fasern - Google Patents

Verfahren zur herstellung von permanent gekräuselten fasern Download PDF

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Publication number
EP0865522B1
EP0865522B1 EP96941707A EP96941707A EP0865522B1 EP 0865522 B1 EP0865522 B1 EP 0865522B1 EP 96941707 A EP96941707 A EP 96941707A EP 96941707 A EP96941707 A EP 96941707A EP 0865522 B1 EP0865522 B1 EP 0865522B1
Authority
EP
European Patent Office
Prior art keywords
filaments
fibers
fluid
fibres
pneumatic
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
EP96941707A
Other languages
English (en)
French (fr)
Other versions
EP0865522A2 (de
Inventor
Olivier Chaubet
Michel Cieslak
Jean-Pierre Prevost
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.)
Novalis Fibres
Original Assignee
Novalis Fibres
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
Application filed by Novalis Fibres filed Critical Novalis Fibres
Publication of EP0865522A2 publication Critical patent/EP0865522A2/de
Application granted granted Critical
Publication of EP0865522B1 publication Critical patent/EP0865522B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • Y10T428/2909—Nonlinear [e.g., crimped, coiled, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]

Definitions

  • the invention relates to a continuous manufacturing process for textured fibers obtained by texturing three-dimensional.
  • Synthetic fibers are used in many applications for the production of fiber yarn, textile or covering surfaces, or as filling elements, for example.
  • a surface support which may be a fabric, a knitted fabric, or a nonwoven, a material surface synthetic or natural, reinforced or not by fillers.
  • Fibers are also used for the production of non-woven surface or felt which have many applications such as filtration, soil stabilization, abrasive surfaces, filler or insulation layers, interlining, between lining, cloth reinforcement, for example.
  • the fibers used are generally fibers crimped.
  • Current fiber manufacturing processes consist of spinning manufacturing in the melt, wicks comprising a large number of filaments arranged in parallel. This wick is collected either in pots or returned to a coil and will be supplied in a drawing / crimping installation.
  • Drawing is generally carried out in a roller drawing bench, crimping being obtained by overfeeding the wick on a surface maintained in an enclosure heated.
  • the wick accumulates on this surface and forms folds.
  • the deformation of filaments is fixed by the temperature of the enclosure.
  • the wick is then either fed in a cutter to be cut into fibers of desired length.
  • Such a method is known from EP-A-28844.
  • the fibers thus obtained have a low bulk because the crimp is rather made in a plane, the fiber can be described as a line in zigzag.
  • this crimping process requires slow speeds and therefore cannot be produced in line with the spinning, that is to say without storage step and recovery of the wick between the spinning step and the crimping step, especially for fibers or filaments of high title.
  • the object of the invention is in particular to remedy these drawbacks by proposing an integrated, step-free process storage and recovery of the wick between the spinning step and the cable cutting step in applying a three-dimensional crimp which makes it possible to obtain fibers with a voluminous appearance, and especially retaining a high crimp rate even under tension.
  • the fibers obtained by the process of the invention having a rate of crimp greater than 30% under tension of 100mg, greater than 25% under tension of 200 mg and even more advantageously a crimp rate greater than 20% under a voltage of 400 mg.
  • fibers of the same title but with crimps contained only in one plane have a crimp rate of less than 30% from a tension of 100 mg.
  • the crimp rate is determined by measuring the length (L d ) of a straightened and flattened fiber, and the length (L f ) of the crimped fiber to which a determined tension is applied.
  • This crimp is obtained by a three-dimensional texturing of the filaments. This texturing is carried out by pneumatic stacking of the multifilament drill bit, as will be described below.
  • the synthetic materials constituting the fibers obtained by the process of the invention are advantageously a polymer of the polyamide or copolyamide type.
  • polyamides or copolyamides suitable for the invention it is Mention may be made of polyadipamide of hexamethylene, polycaprolactam, copolymers of these two polyamides or their mixtures. These polyamides can also understand other recurring units such as aromatic sulfonate units such as the recurrent unit derived from 5-isophthalic acid or the like, or units derived from other dicarboxylic acids such as iso or terephthalic acids or diamines.
  • Polyamds can also be used with different additives such as pigments, matifiers, heat or light stabilizing agents, heat protection, anti-microbial agents, anti-fouling agents or the like. This list is not exhaustive.
  • polyadipamide of hexamethylene and copolyamides or mixture mainly comprising adipamide units hexamethylene.
  • This method of the invention consists in spinning in one or more dies a composition of synthetic material, at a temperature higher than the melting temperature of said composition so as to obtain a certain number of filaments.
  • filaments are then cooled by a cooling fluid to lower their temperature at a value lower than or close to the Tg of the polymer. Filaments are then brought together at a point, called a convergence point, to form a wick.
  • a wick is called a collection of filaments parallel to each other.
  • the wick is possibly subjected to a stretching, then is fed into a three-dimensional texturing step with pneumatic packing, This crimp is set in the texturatian step, The curly wick is fed into a cutting means to be cut into fibers of desired length.
  • several textured locks can be combined and jointly fed into the cutter.
  • the method of the invention is a continuous and integrated process which includes the steps of spinning, drawing, crimping, fixing and cutting in line of strands of filaments.
  • the spinning speed can vary from 500 m / min to 2500 m / min.
  • the spinning temperature is between 250 ° C and 300 ° C.
  • the filaments in die outlet are cooled by a fluid which is advantageously either water or the air.
  • the cooling fluid is advantageously water.
  • the filaments after convergence in the form of a wick are optionally subjected to a stretching whose rate is advantageously between 1 and 5, preferably between 2 and 4.
  • This stretching is generally carried out between two or more trains of rollers heated or not. It can be carried out cold or at a temperature up to 120 ° C.
  • the drawn filaments are fed in a crimping or texturing step according to the principle of pneumatic crowding described in particular in the French patent n ° 2 041 654.
  • the filaments are entrained by a fluid, preferably heated to a temperature higher than 100 ° C in a nozzle, the filaments being taken up on a roller drive at the nozzle outlet at a speed lower than the inlet speed of filaments in the nozzle.
  • the filaments pile up in the nozzle forming folds, the drive fluid escaping laterally through holes provided on the wall of the nozzle.
  • the curly wick is developed and then fed into cutting means to produce fibers of determined length for example, advantageously included between 25 and 200 mm.
  • the process of the invention makes it possible to obtain filaments then fibers including three-dimensional crimps, but with minimal entanglement between the filaments.
  • the fibers are easily individualizable and compatible to be used in particular for the manufacture of non woven and spun with fibers or in flocking processes for example.
  • the filaments are cooled by passing through a cold water bath and driven by a delivery roller to a speed of 286 m / min.
  • the filament draw rate is 2.85.
  • the filaments collected in the form of a wick of 272 filaments are subjected to texturing according to patent 2,041,654.
  • the accumulator fluid composed of a air / steam mixture, at a temperature of 170 ° C.
  • the title of the wick is 5860 dtex.
  • the wick is fed into a cutter comprising 4 blades to form fibers 155 mm long.
  • the curling rate under tension of 200 mg is 42%.
  • fibers in PA66 of title 110 dtex were produced.
  • the sector used includes 56 capillaries.
  • the polymer flow through the capillaries is 420 g / min.
  • the draw ratio is 2.9 with a drawing speed of 770 m / min.
  • the curling rate under tension of 200 mg is 24%.
  • a carpet surface was produced with a yarn of fibers obtained by spinning the fibers of Example 1 (titer about 22dtex).
  • the fiber yarn produced according to the usual spinning techniques has a titer of 200 tex and is stored in the form of spools.
  • the carpet surface is produced according to the TUFT process using as backing or support a nonwoven surface sold under the trade mark COLBACK® by AKZO.
  • Two carpet surfaces (A and B) were obtained with a loom with a gauge of 1/10 ° and a number of points of 62 / dm for the surface A and 48 / dm for surface B.
  • the height of the bristles, after leveling is 6 mm for both surfaces.
  • Surface A has a density of 700 g / m 2 , that of surface B is 540 g / m 2 .
  • VETTERMANN ISO reference TR 10361 of 15/11/1990
  • test on the rolling device or wheelchair reference ISO TR 4918 of 15/10/1990
  • the VETTERMANN test consists of placing carpet surface test pieces on the internal face of a drum which contains a round steel ball with rubber pads on its surface. The drum is rotated causing the movement of the steel ball which comes into contact with the surface of the test pieces. After 22,000 drum cycles, the surface appearance of the test pieces is evaluated according to ISO / TR 9405. Surface A has a rating of 3.7, while the surface has a rating of 3.5.
  • the test on an apparatus on casters or wheelchairs consists in moving one or more casters placed under a load of 90 kg on the surface of a test piece carpet. The surface appearance of the test pieces and their loss of thickness are determined in accordance with ISO TR 4918 and ISO TR 9405.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Inorganic Fibers (AREA)
  • Nonwoven Fabrics (AREA)

Claims (5)

  1. Verfahren zur kontinuierlichen Herstellung von Fasern mit permanenter Kräuselung, umfassend die aufeinanderfolgenden Stufen:
    Spinnen einer Kunststoffzusammensetzung bei einer Temperatur über der Schmelztemperatur der Zusammensetzung;
    Kühlen der erhaltenen Filamente durch ein Kühlfluid;
    Kombinieren der Filamente unter Bildung eines Bandes;
    gegebenenfalls Verstrecken der Filamente;
    dadurch gekennzeichnet, dass die folgenden Stufen auf die vorstehenden Stufen folgen:
    Unterwerfen der Filamente in Bandform einer dreidimensionalen Texturierung durch pneumatische Anhäufung des Bandes in einer Düse;
    Fixieren der Texturierung durch eine thermische Behandlung;
    Einspeisen des Bandes in eine Schneidevorrichtung zum Schneiden der Filamente in Fasern.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Fluid zur Durchführung der pneumatischen Anhäufung Luft, Wasserdampf oder ein Luft/Dampf-Gemisch ist.
  3. Verfahren nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Temperatur des Fluids der pneumatischen Anhäufung über 100°C liegt.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Kühlfluid der Filamente unter den Spinndüsen Luft oder Wasser ist.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass das Kühlfluid der Filamente Wasser ist und das Fluid der pneumatischen Anhäufung ein Luft/Dampf-Gemisch ist.
EP96941707A 1995-12-08 1996-12-05 Verfahren zur herstellung von permanent gekräuselten fasern Expired - Lifetime EP0865522B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9514738A FR2742168B1 (fr) 1995-12-08 1995-12-08 Fibres a frisure permanente et procede de fabrication de ces fibres
FR9514738 1995-12-08
PCT/FR1996/001944 WO1997021858A2 (fr) 1995-12-08 1996-12-05 Fibres a frisure permanente et procede de fabrication de ces fibres

Publications (2)

Publication Number Publication Date
EP0865522A2 EP0865522A2 (de) 1998-09-23
EP0865522B1 true EP0865522B1 (de) 2004-03-24

Family

ID=9485430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96941707A Expired - Lifetime EP0865522B1 (de) 1995-12-08 1996-12-05 Verfahren zur herstellung von permanent gekräuselten fasern

Country Status (10)

Country Link
US (1) US6180230B1 (de)
EP (1) EP0865522B1 (de)
JP (1) JPH11510223A (de)
AT (1) ATE262603T1 (de)
AU (1) AU1100797A (de)
CA (1) CA2238894C (de)
DE (1) DE69631967T2 (de)
ES (1) ES2214556T3 (de)
FR (1) FR2742168B1 (de)
WO (1) WO1997021858A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779746B1 (fr) * 1998-06-11 2000-07-21 Novalis Fibres Utilisation de fibres a frisure tridimensionnelle pour la fabrication de tissu ou toile de renfort, et tissu de renfort obtenu
TWI481969B (zh) 2011-12-31 2015-04-21 羅門哈斯電子材料有限公司 光阻劑圖案修整方法
CN112391694A (zh) * 2020-12-01 2021-02-23 浙江泓泰德建新纤维有限公司 利用fdy复合纺纤维长丝制成复合纺短纤维的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341914A (en) * 1964-07-22 1967-09-19 British Nylon Spinners Ltd Process for treating filamentary material in a fluid
GB1179436A (en) * 1967-05-22 1970-01-28 Ici Ltd Helically Crimped Filamentary Materials
US4343860A (en) * 1979-07-16 1982-08-10 E. I. Du Pont De Nemours And Company Self-crimping polyamide fibers
JPS5685417A (en) * 1979-11-13 1981-07-11 Phillips Petroleum Co Polyolefin product and method
ZA816907B (en) * 1980-10-08 1983-05-25 Du Pont Process and apparatus for making coherent yarn
JPS58109641A (ja) 1981-12-24 1983-06-30 帝人株式会社 捲縮加工糸の製造方法
JPS60239534A (ja) 1984-05-07 1985-11-28 ユニチカ株式会社 ナイロン６繊維トウの捲縮加工法
US5281476A (en) * 1988-05-30 1994-01-25 Asahi Kasei Kogyo Kabushiki Kaisha Crimped multifilament and method for manufacturing the same
US5547726A (en) * 1989-05-24 1996-08-20 Dingler; Gerhard Construction element
US5360667A (en) * 1990-06-21 1994-11-01 E. I. Du Pont De Nemours & Company Nylon flat yarns
JP3097362B2 (ja) 1992-12-15 2000-10-10 東レ株式会社 糸条の捲縮加工装置
US5407625A (en) * 1993-11-22 1995-04-18 Wellman, Inc. Method of forming self-texturing filaments and resulting self-texturing filaments

Also Published As

Publication number Publication date
FR2742168A1 (fr) 1997-06-13
ATE262603T1 (de) 2004-04-15
CA2238894A1 (fr) 1997-06-19
AU1100797A (en) 1997-07-03
ES2214556T3 (es) 2004-09-16
DE69631967T2 (de) 2004-08-12
FR2742168B1 (fr) 1998-01-16
WO1997021858A2 (fr) 1997-06-19
EP0865522A2 (de) 1998-09-23
WO1997021858A3 (fr) 1997-08-14
DE69631967D1 (de) 2004-04-29
JPH11510223A (ja) 1999-09-07
US6180230B1 (en) 2001-01-30
CA2238894C (fr) 2001-05-29

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