EP0486884B1 - Verfahren zur Herstellung von Mischgarn - Google Patents

Verfahren zur Herstellung von Mischgarn Download PDF

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Publication number
EP0486884B1
EP0486884B1 EP91118964A EP91118964A EP0486884B1 EP 0486884 B1 EP0486884 B1 EP 0486884B1 EP 91118964 A EP91118964 A EP 91118964A EP 91118964 A EP91118964 A EP 91118964A EP 0486884 B1 EP0486884 B1 EP 0486884B1
Authority
EP
European Patent Office
Prior art keywords
thermoplastic
fibers
strip
fibre strip
yarn
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
EP91118964A
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German (de)
English (en)
French (fr)
Other versions
EP0486884A1 (de
Inventor
Regina Laws
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.)
Cytec Technology Corp
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Cytec Technology Corp
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Filing date
Publication date
Application filed by Cytec Technology Corp filed Critical Cytec Technology Corp
Publication of EP0486884A1 publication Critical patent/EP0486884A1/de
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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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • D02G3/402—Yarns in which fibres are united by adhesives; Impregnated yarns or threads the adhesive being one component of the yarn, i.e. thermoplastic yarn

Definitions

  • the invention relates to a method for producing blended yarn with improved processability according to the preamble of claim 1.
  • thermoplastic fibers and reinforcing fibers are homogeneously mixed together.
  • Such yarn can be - in the form of textile fabrics, e.g. of scrims or fabrics - easily deform and drape into three-dimensional structures. By pressing these structures at temperatures above the softening point of the thermoplastic, high-quality fiber composite materials are created.
  • EP-B 156 599 describes a generic method for producing a blended yarn in which a thermoplastic fiber cable and a carbon fiber cable are each spread apart and then brought together again and mixed intimately.
  • the two fiber cables should be spread to a practically identical width.
  • the mixed yarn produced in this way can be provided with a size and, among other things, processed into a fabric. It has now been shown that yarns which have been produced in accordance with EP-B 156 599 do not optimally take up the size, so that the fibers can split open during weaving and fiber breaks can occur, with the result that the laminates produced from the fabrics do not have equally good mechanical properties.
  • the invention was therefore based on the object of improving the mixed yarn produced according to EP-B 156 599 in such a way that it can optimally absorb size and can be woven without problems, so that laminates produced therefrom always have uniformly good mechanical properties, in particular good tensile strength .
  • This object is achieved in that the spread is carried out so that the reinforcing fiber band is 20 to 100% wider than the thermoplastic fiber band.
  • fibers When the term “fibers” is used in the present patent application, this means bundles of endless, parallel single filaments.
  • thermoplastic materials that can be spun into fibers are suitable for the thermoplastic fibers.
  • Prefers are semi-crystalline thermoplastics with a melting point above 50 ° C, preferably above 100 ° C.
  • Polyether ketones, polyimides, polyphenylene sulfide, polyamides, polybutylene terephthalate, polyethylene terephthalate and liquid-crystalline polyesters are particularly suitable.
  • the fibers generally have a titer of 500 to 20,000 dtex, preferably 500 to 5000 dtex; they consist of 100 to 10,000 individual filaments with a diameter between 10 and 60 »m, preferably from 20 to 40» m.
  • Fibers made of carbon, glass, metal, boron, boron nitride, silicon carbide and aromatic polyamide are suitable as reinforcement materials.
  • Glass and in particular carbon fibers are preferred. They generally have a titer between 1,000 and 10,000 d tex; they consist of 1000 to 45,000, preferably 3000 to 12,000 individual filaments with a diameter between 3 and 150 »m.
  • the proportion of thermoplastic fibers in the blended yarn can be adjusted by a suitable choice of the titer of the thermoplastic fibers and reinforcing fibers.
  • the thermoplastic fibers can also be drawn off and brought together from several coils.
  • the thermoplastic content in the finished blended yarn should preferably be between 30 and 75% by volume, in particular between 35 and 65% by volume.
  • the figure shows schematically the sequence of the method according to the invention.
  • Carbon fibers (1a) and thermoplastic fibers (1b) are drawn off from spools (2a) and (2b).
  • the fibers then pass through the spreading devices (3a) or (3b).
  • the spreading can in principle be carried out using spreading combs; devices in which the fibers are exposed to a liquid jet or a gas jet are preferred.
  • a particularly preferred air jet device is described in detail in EP-B 156 599.
  • the gas pressure should be so high that the capillary forces that hold the individual filaments together are overcome, but it must not be so high that the fibers break.
  • Air pressures of 0.05 to 1 bar are sufficient for carbon fibers; pressures between 0.05 and 2 bar can be used for thermoplastic fibers.
  • the width of the tapes formed during spreading can also be influenced by the fiber tension, which is generally between 20 and 200, preferably between 30 and 120 g.
  • the width of the bands can vary between 2 and 10 cm, preferably between 3 and 8 cm.
  • the reinforcing fiber band must be 20 to 100%, preferably 40 to 80% wider than the thermoplastic fiber band.
  • the belts are brought together via rollers or rods (4), rollers or rods preferably being arranged in such a way that the mixing belt is deflected twice. This ensures that the two types of fibers are mixed homogeneously, so that thermoplastic filaments and reinforcing material filaments are ideally distributed in the blended yarn.
  • the mixing belt can be fed to another gas jet device in which it is swirled. In some cases, this can improve the mixing.
  • the mixing belt can then be passed through a liquid bath (5) which contains a size solution.
  • a size solution e.g. those based on polyvinyl alcohol, polyvinyl pyrrolidone or polyacrylates.
  • the size enables further processing into textile fabrics, e.g. the weaving of the yarn.
  • the mixing belt passes through a drying device (6) in which the solvent of the size solution is removed again.
  • the band is combined into a compact cross-section in a device (7).
  • the device (7) can e.g. be a roll that has a V or U-shaped inner cross section.
  • the mixed yarn is wound on a spool (8).
  • the mixed yarn produced according to the invention can be further processed without problems on the usual looms into woven or knitted fabrics without fiber breaks. Fiber composites can then be produced from these by pressing at temperatures above the melting point of the thermoplastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Woven Fabrics (AREA)
  • Reinforced Plastic Materials (AREA)
EP91118964A 1990-11-20 1991-11-07 Verfahren zur Herstellung von Mischgarn Expired - Lifetime EP0486884B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4036926A DE4036926A1 (de) 1990-11-20 1990-11-20 Verfahren zur herstellung von hybridgarn
DE4036926 1990-11-20

Publications (2)

Publication Number Publication Date
EP0486884A1 EP0486884A1 (de) 1992-05-27
EP0486884B1 true EP0486884B1 (de) 1995-08-30

Family

ID=6418605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118964A Expired - Lifetime EP0486884B1 (de) 1990-11-20 1991-11-07 Verfahren zur Herstellung von Mischgarn

Country Status (6)

Country Link
US (1) US5177840A (es)
EP (1) EP0486884B1 (es)
JP (1) JPH04263638A (es)
CA (1) CA2054929C (es)
DE (2) DE4036926A1 (es)
ES (1) ES2076443T3 (es)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137406A1 (de) * 1991-11-14 1993-05-19 Basf Ag Hybridgarn aus polyamidfasern und verstaerkungsfasern
US5380477A (en) * 1993-05-25 1995-01-10 Basf Corporation Process of making fiber reinforced laminates
ES2154710T3 (es) * 1994-12-16 2001-04-16 Hoechst Trevira Gmbh & Co Kg Hilo hibrido y material textil deformable permanentemente encogible y encogido, fabricado a partir del mismo, su fabricacion y utilizacion.
EP0729289B1 (en) * 1995-02-23 1998-07-22 Teijin Limited Speaker damper and production method thereof
TW357200B (en) * 1995-09-13 1999-05-01 Owens Corning Fiberglas Tech Unidirectional fabric and method and apparatuses for forming the same
US6045884A (en) 1996-02-27 2000-04-04 Federal-Mogul Systems Protection Group, Inc. Thermally protective sleeving
FR2797892B1 (fr) * 1999-08-27 2002-08-30 Vetrotex France Sa Procede et dispositif de fabrication de plaques composites
US6543106B1 (en) * 1999-10-25 2003-04-08 Celanese Acetate, Llc Apparatus, method and system for air opening of textile tow and opened textile tow web produced thereby
DE60143164D1 (de) 2000-07-26 2010-11-11 Ballard Power Systems N und darauf bezogene verfahren
US20040198119A1 (en) * 2001-01-12 2004-10-07 Kiyoyuki Narumi Spiral woven fabric and high-speed rotating body using it
US6477740B1 (en) * 2001-12-12 2002-11-12 Hexcel Corporation Stretch breaking of fibers
DE10208353A1 (de) * 2002-02-27 2003-09-11 Trevira Gmbh Verfahren zur Herstellung feiner stauchgekräuselter Kabel aus synthetischen Filamenten sowie deren Weiterverarbeitung zu textilen Hygieneartikeln
US7499746B2 (en) * 2004-01-30 2009-03-03 Encore Medical Asset Corporation Automated adaptive muscle stimulation method and apparatus
DE102009026737B4 (de) * 2008-09-16 2012-10-31 Technische Universität Dresden Vorrichtung und Verfahren zum Ausbreiten von bandförmigen Filamentgarnen
DE102013206983A1 (de) 2013-04-18 2014-10-23 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zur Herstellung von unidirektionalen Kohlenstofffasergelegen
KR101439150B1 (ko) * 2013-05-06 2014-09-11 현대자동차주식회사 탄소연속섬유/열가소성수지섬유 복합사 및 이의 제조방법
US20150137409A1 (en) * 2013-11-21 2015-05-21 Hsien-Hsiao Hsieh Method For Forming Textile Article
DE102019112555B3 (de) 2019-05-14 2020-08-06 Cetex Institut gGmbH Verfahren zur Herstellung eines Hybridfaserbündels, Hybridfaserbündel und Vorrichtung zur Herstellung eines Hybridfaserbündels
DE102020105167A1 (de) 2020-02-27 2021-09-02 Thüringisches Institut für Textil- und Kunststoff-Forschung e. V. Rudolstadt Verfahren zur Herstellung eines Hybridgarnes
DE102021120429A1 (de) * 2021-08-05 2023-02-09 Universität Stuttgart, Körperschaft Des Öffentlichen Rechts Transparente Faser-Matrix-Komposite und Verfahren zur deren Herstellung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680303A (en) * 1970-06-09 1972-08-01 Hercules Inc Blending continuous filament yarns
US3739566A (en) * 1971-07-01 1973-06-19 P Smith Apparatus to produce yarn
US3738093A (en) * 1972-04-24 1973-06-12 Deering Milliken Res Corp Yarn guide mounting
US3739564A (en) * 1972-04-24 1973-06-19 Deering Milliken Res Corp Yarn guide
US4343146A (en) * 1980-03-28 1982-08-10 E. I. Du Pont De Nemours And Company Bulked continuous filament yarn with color-point heather
US4874563A (en) * 1984-03-15 1989-10-17 Basf Structural Materials Inc. Process for preparing tows from composite fiber blends
US4799985A (en) * 1984-03-15 1989-01-24 Hoechst Celanese Corporation Method of forming composite fiber blends and molding same
CA1294772C (en) * 1984-03-15 1992-01-28 Paul E. Mcmahon Composite fiber blends
CA1293367C (en) * 1984-03-15 1991-12-24 Paul E. Mcmahon Composite carbon fiber and thermoplastic fiber blends
US4871491A (en) * 1984-03-15 1989-10-03 Basf Structural Materials Inc. Process for preparing composite articles from composite fiber blends
GB8600487D0 (en) * 1986-01-09 1986-02-12 Birkin & Co Ltd Lace making yarn & method
IT1197387B (it) * 1986-10-14 1988-11-30 S I P A Spa Stuoia non tessuta di filamenti continui acrilici ad alto modulo e manufatti rinforzati con detta stuoia
GB2218432B (en) * 1988-05-10 1992-08-05 Albany Int Corp Method for producing impregnated coated yarn
GB8811842D0 (en) * 1988-05-19 1988-06-22 Rieter Scragg Ltd Yarn texturing machine
FR2634790B1 (fr) * 1988-07-29 1990-09-28 Schappe Sa Fils hybrides pour materiaux composites a matrice thermoplastique et leur procede d'obtention

Also Published As

Publication number Publication date
JPH04263638A (ja) 1992-09-18
US5177840A (en) 1993-01-12
ES2076443T3 (es) 1995-11-01
DE4036926A1 (de) 1992-05-21
CA2054929C (en) 1996-09-03
DE59106368D1 (de) 1995-10-05
EP0486884A1 (de) 1992-05-27
CA2054929A1 (en) 1992-05-12

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