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EP0173200B2 - Filaments à haute résistance pour fils à coudre, et procédé de fabrication de ces filaments - Google Patents

Filaments à haute résistance pour fils à coudre, et procédé de fabrication de ces filaments Download PDF

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Publication number
EP0173200B2
EP0173200B2 EP85110343A EP85110343A EP0173200B2 EP 0173200 B2 EP0173200 B2 EP 0173200B2 EP 85110343 A EP85110343 A EP 85110343A EP 85110343 A EP85110343 A EP 85110343A EP 0173200 B2 EP0173200 B2 EP 0173200B2
Authority
EP
European Patent Office
Prior art keywords
sewing
threads
filament
filaments
yarns
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
EP85110343A
Other languages
German (de)
English (en)
Other versions
EP0173200A2 (fr
EP0173200A3 (en
EP0173200B1 (fr
Inventor
Gerhard Dr. Beyer
Rudolf Dr. Johne
Hans Dr. Thaler
Herbert Dr. Wellenhofer
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.)
Hoechst AG
Original Assignee
Hoechst AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6244236&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0173200(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hoechst AG filed Critical Hoechst AG
Priority to AT85110343T priority Critical patent/ATE35003T1/de
Publication of EP0173200A2 publication Critical patent/EP0173200A2/fr
Publication of EP0173200A3 publication Critical patent/EP0173200A3/de
Application granted granted Critical
Publication of EP0173200B1 publication Critical patent/EP0173200B1/fr
Publication of EP0173200B2 publication Critical patent/EP0173200B2/fr
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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/46—Sewing-cottons or the like
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Definitions

  • the present invention relates to high-strength, mu! Tifi! ESupplierar from polyester for the production of sewing threads and a method for their manufacture.
  • Sewing threads are to be understood in this patent as sewing threads.
  • supply threads are required, which in the present case should consist of endless polyester threads.
  • Sewing threads of this type must have high strength, be easy to sew, provide good seam strength and be low-shrinkage in order to prevent the seams from warping during washing or during thermal treatment.
  • the yarns produced in this way have a high tensile strength with values of up to 7.0 g / den (6 2 CNI tex), their hot air shrinkage at 150 ° C. in the examples is between 0.8 and 2.7%.
  • sewing threads made from them do not have satisfactory sewing properties. This is particularly evident in the small sewing lengths of such sewing threads. It is suspected that the disadvantages of the polyester yarns described in Japanese Patent Application Laid-Open No. 51-53019 could be based at least in part on the low molecular weight of these yarns.
  • multifilament supply threads made of thread-forming polyesters for the production of high-strength, twisted sewing threads which are characterized in that they have a S 200 thermal shrinkage of 5 to 7% and a reference elongation (D 45 ) at 45 cN / tex of less than 10 %, after their processing into a sewing thread have a sewing length under heavy load of more than 1000 cm, and the thread-forming polyester has a high average molecular weight corresponding to a relative solution viscosity (1.0 g polymer in 100 ml dichloroacetic acid at 25 ° C) of more than 2.0, and which can be produced in that a high-molecular thread-forming polyester is melt-spun by methods known per se with as little molecular weight reduction as possible so that the threads obtained still have a relative solution viscosity of more than 2.0, the threads by high Pre-orientation is given which corresponds to a birefringence of more than 0.030, and the multifilament
  • the relative viscosity is determined on solutions of 1 g of polymer in 100 ml of dichloroacetic acid at 25 ° C. using capillary viscometers. It is surprising that such rapidly spun, high molecular weight threads are suitable at all for the production of sewing threads. By increasing the spinning speed or the winding speed and the associated pre-orientation of the threads, the strength of the threads obtained is also obtained after a corresponding additional drawing deducted, as was already to be expected according to the teaching of German Interpretation 12 88 734.
  • the method according to the invention consists of high-speed spinning high molecular weight polyester, with measures known per se, such as. B. a nozzle heater, as little degradation of the molecular weight as possible during the spinning process.
  • the fixing temperature of 225 ° C. and below allows the yarns according to the invention to be produced on conventional stretching devices.
  • the draw ratio must of course be adapted to the higher pre-orientation of the supply yarns.
  • the birefringence of the threads serves as a measure of the pre-orientation.
  • the reference elongation is also influenced by the possible presence of a "shrink saddle" in the force-elongation diagram (KD diagram).
  • KD diagram thermomechanically shrunk threads show a greater or lesser degree of elongation of the material after a normal steep increase even with relatively low tensile stresses. Only at higher elongation values does the curve continue to rise and then end at possibly similar values to the corresponding but unshrunk material. In the case of a shrunk material, however, the elongation at break is also significantly higher.
  • the hot air shrink S 200 or S 180 was determined according to DIN 53866 at temperatures of 200 or 180 ° C.
  • the sewing properties were determined using a specially developed test method, which is described in DE-A-3 431 832.
  • a sewing test with the help of an industrial sewing machine under standardized conditions served as the measured variable.
  • the suitability of a sewing thread can be concluded from the length of the seam produced.
  • the measured value "sewing length” indicates the length of the seam in centimeters until the thread breaks and is an average of 10 sewing attempts per test spool.
  • the test process is interrupted if a sewing length greater than 1000 cm is found during a measurement, since experience has shown that sewing lengths over 1000 cm can in any case be described as very good sewing behavior.
  • the requirements for the sewing test can be made more difficult.
  • the above-mentioned conditions are met in the difficult sewing test, but the thread tension of the upper thread is 220 cN and the number of stitches is 5000 stitches / minute.
  • Seam strength is another parameter for assessing the properties of sewing threads. It is determined by using an industrial sewing machine e.g. B. from the Pfaff company. Machine setting: lockstitch 5 stitches per centimeter seam length, 4000 stitches / minute. The upper and lower threads are the same in this test and consist of the sample. The thread tension is optimally adjusted for a good seam appearance, a double layer of cotton twill is sewn. The same material that was used for the sewing length determination was used as the cotton twill.
  • the seam strength is the maximum tensile strength of a 5 cm wide strip. This tensile force is determined in a tensile tester at a working speed of 10 cm per minute. The value found is converted to the individual thread.
  • knife abrasion number is determined using a modified abrasion tester from Zweigle with the designation G 550 S, the rotating test specimen having a hard metal profile abrasion bar. With each measurement, 20 thread loops are placed on the device and each loaded with such a weight that the thread tension is 0.135 cN / dtex. The number of scrubbing tours is determined, which is necessary until one of the 20 test loops used is worn through.
  • the threads were spun out by melting suitable polyethylene terephthalate materials in an extruder (whereby when using highly viscous polyester materials the spinning pack temperature was kept at 290 ° C, but the die temperature was kept at 315 ° C. In contrast, spinning with a spinning pack and Nozzle temperature of 295 ° C. In each case, nozzles with 32 holes were used After the threads had cooled in the spinning shaft, the threads were wound up at 800 or 1000 or, according to the invention, at 3000 m per minute, for example.
  • the spinning bobbins obtained were then presented to so-called three-pallet machines, for example an SZ 26 from Barmag.
  • the threads are drawn off from the spinning bobbin and heated to the drawing temperature of usually 87 ° C. on a first godet, which is looped 6 times, for example, and then passed on to a second heated godet, which is heated to the fixing temperature.
  • the stretching takes place between the first and second godets.
  • the draw ratio used depends on the pre-orientation of the filaments. It is detailed in the table below.
  • the stretched threads are then wound onto cops.
  • the thread material received only a protective twist of about 10 turns per meter under these conditions.
  • the thread material thus obtained represents the supply threads for the production of a sewing thread.
  • the supply threads must be rewound on supply spools. They are then submitted to a LEZZENI twine-type twister type TBR to test their properties. This machine worked at a speed of 10 m / min and produced a triple thread of 138 dtex f 32 S 840 x 3 Z 540.
  • the twists obtained were subjected to HT dyeing at 135 ° C for 120 minutes.
  • the dyed thread was then examined for its textile properties and in particular its suitability as a sewing thread.
  • the measured values obtained are shown in the table below.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Polyesters Or Polycarbonates (AREA)

Claims (4)

1. Fils multifilaments en polyesters filogènes pour la fabrication de fils à coudre retors très solides, et qui sont caractérisés en ce qu'ils donnent un rétrécissement à la chaleur S200 de 5 à 7 % et un allongement de référence (D45), à 45cN/tex inférieur à 10 %, après leur transformation en un fil à coudre ils donnent une longueur de couture, sous charge plus lourde, supérieure à 10 mètre, et le polyester a une masse moléculaire moyenne élevée, correspondant à une viscosité relative en solution (1,0 g du polyester dans 100 ml d'acide dichloracétique à la température de 25°C) de plus de 2,0, fils que l'on peut former par un procédé caractérisé en ce que l'on file à l'état fondu par une méthode en elle-même connue en polyester filogène à haute masse moléculaire, avec une diminution aussi faible que possible de sa masse moléculaire, pour que les fils obtenus aient encore une viscosité relative en solution supérieure à 2,0, puis on donne à ces fils par de hautes vitesses d'enroulement une préorientation correspondant à une double réfraction de plus de 0,030, et enfin on étire à un haut degré les fils multifilaments ainsi obtenus puis on les fixe à des températures pouvant s'élever jusqu'à 225°C.
2. Fils selon la revendication 1, caractérisés en ce que le polyester formant les fils est un poly(téréphtalate d'éthylène) ou un copolymère de téréphtalate d'éthylène avec jusqu'à 5 % en poids de motifs d'autres monomères copolymérisés.
3. Procédé pour fabriquer des fils selon l'une des revendications précédentes, caractérisé en ce que l'on file à l'état fondu par une méthode en elle-même connue en polyesterfilogène à haute masse moléculaire, avec une diminution aussi faible que possible de sa masse moléculaire, pour que les fils obtenus aient encore une viscosité relative en solution supérieure à 2,0, puis on donne à ces fils par de hautes vitesses d'enroulement une préorientation correspondant à une double réfraction de plus de 0,030, et enfin on étire à un haut degré les fils multifilaments ainsi obtenus puis on les fixe à des températures pouvant s'élever jusqu'à 225°C.
4. Procédé selon la revendication 3, caractérisé en ce qu'on conduit sur une machine à galettes chauffables l'étirage et le fixage des fils multifilaments.
EP85110343A 1984-08-30 1985-08-19 Filaments à haute résistance pour fils à coudre, et procédé de fabrication de ces filaments Expired - Lifetime EP0173200B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85110343T ATE35003T1 (de) 1984-08-30 1985-08-19 Hochfeste zulieferfaeden fuer naehgarne und verfahren zu ihrer herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843431834 DE3431834A1 (de) 1984-08-30 1984-08-30 Hochfeste zulieferfaeden fuer naehgarne und verfahren zu ihrer herstellung
DE3431834 1984-08-30

Publications (4)

Publication Number Publication Date
EP0173200A2 EP0173200A2 (fr) 1986-03-05
EP0173200A3 EP0173200A3 (en) 1986-05-28
EP0173200B1 EP0173200B1 (fr) 1988-06-08
EP0173200B2 true EP0173200B2 (fr) 1993-09-01

Family

ID=6244236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110343A Expired - Lifetime EP0173200B2 (fr) 1984-08-30 1985-08-19 Filaments à haute résistance pour fils à coudre, et procédé de fabrication de ces filaments

Country Status (6)

Country Link
EP (1) EP0173200B2 (fr)
JP (1) JPS6163713A (fr)
AT (1) ATE35003T1 (fr)
BR (1) BR8504164A (fr)
CA (1) CA1300361C (fr)
DE (2) DE3431834A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831700A1 (de) * 1988-09-17 1990-03-22 Amann & Soehne Verfahren zur herstellung eines garnes, insbesondere eines naehgarnes, sowie ein garn
DE3844615A1 (de) * 1988-09-17 1990-03-22 Amann & Soehne Garn, insbesondere naehgarn
DE3834139A1 (de) * 1988-10-07 1990-04-19 Hoechst Ag Zweikomponenten-schlingennaehgarn und verfahren zu seiner herstellung
DE4215016A1 (de) * 1992-05-12 1993-11-18 Amann & Soehne Hochfestes Nähgarn sowie Verfahren zur Herstellung eines derartigen Nähgarnes
DE59309745D1 (de) * 1992-10-03 1999-09-30 Hoechst Ag Coregarne enthaltend eine Seele aus hochfestem Polyestermaterial sowie Verfahren zu deren Herstellung
EP0591827B1 (fr) * 1992-10-03 1999-08-25 Hoechst Aktiengesellschaft Fil guipé avec une âme de matière polyester à haute ténacité et procédé pour sa fabrication
KR100823892B1 (ko) * 2006-11-23 2008-04-21 삼성전자주식회사 디지털 컨텐츠의 저작권을 보호하기 위한 시스템 및 그방법

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604667A (en) * 1950-08-23 1952-07-29 Du Pont Yarn process
CA725535A (en) * 1962-01-02 1966-01-11 A. Chantry William Spinning polyester at low tension and drawing at increased temperature
DE2207849B2 (de) * 1972-02-19 1976-04-01 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur herstellung von texturierten, molekular orientierten faeden aus polyester oder polyamid
JPS5224066B2 (fr) * 1972-06-28 1977-06-29
DE2254998B2 (de) * 1972-11-10 1975-07-10 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Verfahren zur Herstellung von Kord aus Chemiefasern
JPS584089B2 (ja) * 1974-11-06 1983-01-25 帝人株式会社 ポリエステルセンイノ セイゾウホウホウ
US4003974A (en) * 1975-04-04 1977-01-18 E. I. Du Pont De Nemours And Company Continuous spin-drawing process for preparing polyethylene terephthalate yarns
US4134882A (en) * 1976-06-11 1979-01-16 E. I. Du Pont De Nemours And Company Poly(ethylene terephthalate)filaments
US4630688A (en) * 1981-06-24 1986-12-23 Weatherford/Lamb, Inc. Power spinner for rotating a kelly joint
JPS5837418A (ja) * 1981-08-31 1983-03-04 Kunihiko Odaka 無媒塵燃焼法及び無煤塵燃焼炉
JPS59150109A (ja) * 1983-02-15 1984-08-28 Nippon Ester Co Ltd 高強度ポリエステル繊維の製造方法
JPH05153019A (ja) * 1991-11-27 1993-06-18 Nec Corp マイクロ波多方向多重通信方式

Also Published As

Publication number Publication date
BR8504164A (pt) 1986-06-24
DE3431834A1 (de) 1986-03-06
CA1300361C (fr) 1992-05-12
ATE35003T1 (de) 1988-06-15
DE3563226D1 (en) 1988-07-14
EP0173200A2 (fr) 1986-03-05
JPS6163713A (ja) 1986-04-01
EP0173200A3 (en) 1986-05-28
EP0173200B1 (fr) 1988-06-08

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