EP0918897B1 - Procede pour ameliorer le tissage d'une etoffe de fils de chaine a module d'elasticite elevee - Google Patents

Procede pour ameliorer le tissage d'une etoffe de fils de chaine a module d'elasticite elevee Download PDF

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Publication number
EP0918897B1
EP0918897B1 EP97931856A EP97931856A EP0918897B1 EP 0918897 B1 EP0918897 B1 EP 0918897B1 EP 97931856 A EP97931856 A EP 97931856A EP 97931856 A EP97931856 A EP 97931856A EP 0918897 B1 EP0918897 B1 EP 0918897B1
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EP
European Patent Office
Prior art keywords
shed
warp yarns
elasticity
point
warp
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
EP97931856A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0918897A1 (fr
Inventor
Claude Corbiere
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.)
CORTEX
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CORTEX
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Publication date
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/12—Controlling warp tension by means other than let-off mechanisms
    • D03D49/14—Compensating for tension differences during shedding
    • 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
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/02—Auxiliary apparatus combined with or associated with looms for treating warp, e.g. cleaning, moistening
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C17/00—Fulling
    • D06C17/02—Fulling by rollers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic

Definitions

  • the invention relates to the field of textile weaving, and more specifically a process for improving the weaving of a son of chain with high elastic modulus.
  • a method according to the preamble of claim 1 is known from document US-A-4,024,003.
  • the invention therefore seeks to solve the problem of broken threads of chain consecutive to the strong mechanical stresses undergone by the wires moment of the opening of the crowd and as a corollary to increase the speed of beating of trades while maintaining the same quality of weaving.
  • This process is characterized in that, in the vicinity of the opening point of the crowd, it causes heating of the warp threads to a temperature sufficient to induce a local decrease in the modulus of elasticity of the warp threads, followed by a cooling of the warp threads in the crowd before it reaches the beams.
  • modulus of elasticity or Young's modulus
  • Young's modulus the directing coefficient (or the slope at the origin) of the curve giving the ordinate the tensile force and on the x-axis the elongation that this force causes.
  • This module is expressed in Newton / Tex or gigaPascal (GPa).
  • the modulus of elasticity of cold polyester yarns is around 10 GPa for textile yarns with high residual elongation or elongation at rupture (greater than 35%). It can reach 15 GPa for high wires tenacity with low residual elongation (of the order of 15%).
  • the Young's modulus of polyamide yarn is of the order of 5 GPa. In both cases, heating above the temperature of second order transition causes a significant decrease in the modulus of elasticity when the wire is then stretched. Typically, the module of elasticity when hot may decrease, reaching in certain cases the tenth of the cold module.
  • the invention consists in heating the warp threads level of the opening point of the crowd, so as to decrease their modulus of elasticity to make them more flexible, and more precisely for allow them to absorb, in the crowd entry area, the impulse increases in voltage due to movements of smooth.
  • the cooling occurs by natural convection, but the invention also covers the variants in which means are used of all kinds to facilitate cooling.
  • the chain wires are advantageously heated to a temperature between the softening temperature (TR) and the melting point (TF) of the chain wires.
  • TR softening temperature
  • TF melting point
  • these strands are stretched in the heated area thanks to the jerky traction imposed on them by heald movement, combined with the regular call of the winding of the tissue.
  • the jerky drawing of the wires thus produced does not not produce as you might expect, irregularities in the wires chain and hence in the fabric.
  • the heating is carried out either by convection or by radiation or by contact.
  • the heating carried out by contact, by means of a heating pad protected from abrasion by a chrome or ceramic coating.
  • the chain threads rub in sliding on a heating element whose length, counted in the direction passage of the wire, is calculated to cause the increase of desired temperature at the core of the wires, and this as a function of the speed of progression and size of the threads.
  • the skate is associated with means allowing it to move away from the layer of wires when the loom stops weave. So, as soon as the chain wires are stopped, the heating pad is separated from the chain son to avoid causing degradation, or even fusion in the extreme case.
  • the heating pad is located above the chain to avoid residual heating by convection when switching on away from the skate.
  • the shoe spacing device heating works by default, that is to say it automatically discards the shoe as soon as the progression of the thread stops, either consecutively downstream wire breakage, or following a power supply failure electricity or compressed air from the various components of the installation.
  • the heating pad is arranged in an area between the wire roller and guides spanning disposed in the vicinity of the thread-carrying roller, defining the crowd opening points. In this way, the heating is obtained from uniformly for all the wires gathered in a flat area where they are all parallel.
  • This process makes it possible to treat numerous chemical threads, by example polyamides, polyester and advantageously yarns partially oriented, commonly called "POY"., such as notament described in patents US-A-3,771,162 and US-A-3,772,872.
  • weaving process according to the invention makes it possible to obtain a stretching of the yarn and therefore performs the two jerky stretching operations in a single step characteristic and weaving while so far for obtaining of a POY-based fabric, we previously carried out a regular stretching traditional then completely independently, weaving.
  • the invention relates to a method for improving the weaving of warp yarns with a high modulus of elasticity.
  • This process can be implemented on a traditional loom, to which we add elements enabling the characteristic function of the process.
  • the traditional loom presents in the sense of route of the wire, a beam (1) mounted on a barrel (2), and on which are wound all the parallel chain son.
  • These chain threads (3), from the beam (1) are unwound up to a wire-carrying roller (4) at from which they take a substantially horizontal direction.
  • these son of chain (3) then pass between two spanning guides (5, 6). From these spanning guides (5, 6), they are supported by beams (7, 8) whose object is to spread towards up or down the different chain threads (3) to form the crowd (9) and allow the insertion of the weft thread (16).
  • the invention consists in heating the warp threads, at neighborhood of the opening point of the crowd, to reduce their modulus elasticity and if necessary allow them to undergo through the action of loom, a jerky stretch just before weaving itself.
  • the jerky stretching results in a regularity of the fabric, which constitutes an unexpected effect, and which explains the fact that it was not sought until then.
  • this heater is a heating pad (20) present over the entire width of all the warp threads, and which can come into contact with the web of warp yarns, between the yarn carrying roller (4) and the spanning guides (5, 6). More specifically, it is an element transverse heater, the underside of which is covered with a material very high surface hardness and low friction rate to avoid any abrasion by the chain threads which would cause deterioration subsequent chain son themselves. This may include an outer layer (24) of chrome plating or ceramic.
  • the invention covers all types of heating of the skate, and in particular those using electrical energy, by means of appropriate connections (22).
  • the shoe (20) can be associated with means (21) allowing the shoe (20) to be positioned in contact with the chain wires (3), and above all to remove this pad in the event of the machine stopping, in order to to avoid causing degradation or even melting of the wires in the case extreme.
  • These may be purely mechanical means, or preferably acting by means of hydraulic cylinders, or even still electromechanical systems.
  • the position rest of the shoe is moved away from the ply of threads so that in the event of failure of the spacing means, the shoe does not remain in contact with the wires but on the contrary automatically moves away from them.
  • the pad is positioned above the ply of son.
  • the invention is not limited to the form shown in which the heating is carried out upstream of the guides (5, 6), but this also covers the variants in which heating occurs in the vicinity of or just after them.
  • the process can be carried out using a heating pad whose contact area with the wires is a few centimeters, but also by means operating by radiation, or by convection in which the heating element does not come directly to the contact of the chain wires.
  • the invention consists in the particular case of wires thermoplastics to raise the temperature of the wire beyond its temperature of transition, but below the melting point. So, we observed, for treat polyamide (6-6), that the result was interesting if the temperature was of the order of 180 ° to 200 ° C. For polyamide 6, this temperature is from 170 ° to 190 ° C. With regard to polyester, this temperature is close to 200 ° C to 220 ° C.
  • the elongation at break is reduced, and may by example go from 60 to 40% for previously drawn threads.
  • the elongation at break (or elongation residual) can go from 400% before stretching to 50% after stretching.
  • the dispersion concerning this elongation at break is very strongly reduced by a factor of 5, which corresponds to a homogenization of qualities of the chain threads. This homogenization is also observed in tinctorial affinity whose regularity is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Woven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP97931856A 1996-07-18 1997-07-03 Procede pour ameliorer le tissage d'une etoffe de fils de chaine a module d'elasticite elevee Expired - Lifetime EP0918897B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9609264 1996-07-18
FR9609264A FR2751350B1 (fr) 1996-07-18 1996-07-18 Procede pour ameliorer le tissage d'une etoffe de fils de chaine a module d'elasticite elevee
PCT/FR1997/001189 WO1998003709A1 (fr) 1996-07-18 1997-07-03 Procede pour ameliorer le tissage d'une etoffe de fils de chaine a module d'elasticite elevee

Publications (2)

Publication Number Publication Date
EP0918897A1 EP0918897A1 (fr) 1999-06-02
EP0918897B1 true EP0918897B1 (fr) 2002-03-27

Family

ID=9494386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97931856A Expired - Lifetime EP0918897B1 (fr) 1996-07-18 1997-07-03 Procede pour ameliorer le tissage d'une etoffe de fils de chaine a module d'elasticite elevee

Country Status (12)

Country Link
US (1) US6050303A (zh)
EP (1) EP0918897B1 (zh)
JP (1) JP2000515933A (zh)
KR (1) KR20000065230A (zh)
CN (1) CN1063243C (zh)
AT (1) ATE215139T1 (zh)
CA (1) CA2256029A1 (zh)
DE (1) DE69711394T2 (zh)
ES (1) ES2171972T3 (zh)
FR (1) FR2751350B1 (zh)
TR (1) TR199802751T2 (zh)
WO (1) WO1998003709A1 (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6669863B1 (en) 1998-12-11 2003-12-30 Akzo Nobel N.V. Anionic cellulose ethers having temperature-dependent associative properties
WO2000053834A1 (fr) * 1999-03-10 2000-09-14 Cortex Procede pour obtenir une etoffe tissee
FR2790771B1 (fr) * 1999-03-10 2001-04-20 Cortex Procede pour obtenir des etoffes tissees, et etoffes textiles tissees obtenues selon ce procede
CN1273289A (zh) * 2000-06-01 2000-11-15 成有德 直接式经纱自动给湿织机
US7584580B1 (en) * 2006-04-26 2009-09-08 Adair Jr John D Underdeck drainage
KR100734911B1 (ko) * 2006-09-18 2007-07-03 (주)세진 고밀도 화학섬유 직물의 제직방법 및 장치
DE102007028657A1 (de) * 2007-06-21 2009-01-02 Mep-Olbo Gmbh Vorrichtung zum Herstellen textiler Flächengebilde
CN105862243A (zh) * 2016-04-26 2016-08-17 江南大学 一种用于高强高模纤维经编织造在线预处理方法
CN106637642A (zh) * 2016-11-15 2017-05-10 江南大学 用于高强高模纤维横编织造在线预处理装置
CN112064176A (zh) * 2020-09-09 2020-12-11 东阳市川泽户外用品有限公司 一种带清扫装置的纺织设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024003A (en) * 1973-03-15 1977-05-17 Patax Trust Reg. Method of making pile fabrics with deformed pile-thread ends
US3772872A (en) * 1973-03-27 1973-11-20 Du Pont Polyester yarn for draw-texturing process

Also Published As

Publication number Publication date
EP0918897A1 (fr) 1999-06-02
ES2171972T3 (es) 2002-09-16
CN1063243C (zh) 2001-03-14
CA2256029A1 (fr) 1998-01-29
DE69711394D1 (de) 2002-05-02
FR2751350A1 (fr) 1998-01-23
JP2000515933A (ja) 2000-11-28
DE69711394T2 (de) 2003-02-13
KR20000065230A (ko) 2000-11-06
FR2751350B1 (fr) 1998-09-18
ATE215139T1 (de) 2002-04-15
WO1998003709A1 (fr) 1998-01-29
CN1225696A (zh) 1999-08-11
TR199802751T2 (xx) 1999-03-22
US6050303A (en) 2000-04-18

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