FR2304698A1 - Crimped polyester yarns based on ethylene terephthalate - with cross-sectional temp gradient set up in specif filaments - Google Patents

Crimped polyester yarns based on ethylene terephthalate - with cross-sectional temp gradient set up in specif filaments

Info

Publication number
FR2304698A1
FR2304698A1 FR7508829A FR7508829A FR2304698A1 FR 2304698 A1 FR2304698 A1 FR 2304698A1 FR 7508829 A FR7508829 A FR 7508829A FR 7508829 A FR7508829 A FR 7508829A FR 2304698 A1 FR2304698 A1 FR 2304698A1
Authority
FR
France
Prior art keywords
yarn
ethylene terephthalate
filaments
stretching
specif
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.)
Granted
Application number
FR7508829A
Other languages
French (fr)
Other versions
FR2304698B1 (en
Inventor
Christian Reufer
Horst Martin
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.)
Viscosuisse SA
Original Assignee
Societe de la Viscose Suisse SA
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 Societe de la Viscose Suisse SA filed Critical Societe de la Viscose Suisse SA
Priority to FR7508829A priority Critical patent/FR2304698A1/en
Priority to JP2820676A priority patent/JPS51116222A/en
Priority to DE19762611766 priority patent/DE2611766A1/en
Publication of FR2304698A1 publication Critical patent/FR2304698A1/en
Application granted granted Critical
Publication of FR2304698B1 publication Critical patent/FR2304698B1/fr
Granted 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
    • D02G1/004—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by heating fibres, filaments, yarns or threads so as to create a temperature gradient across their diameter, thereby imparting them latent asymmetrical shrinkage properties

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Multicomponent Fibers (AREA)
  • Artificial Filaments (AREA)

Abstract

In the prodn. of a polyester yarn based on ethylene terephthalate, which, on detenting is capable of crimping, the pref. yarn has a double refractive index of 0.03-0.07, a capacity to shrink in boiling water of 40-80% and a crystallinity of is not >3%. Its matl. is for pref. a homopolymer or a copolymer with a large content of ethylene terephthalate units and a small content of units of a diol or an aromatic diacid derived elsewhere than from ethylene glycol or terephthalic acid. It is subjected to such a degree of stretching that after being stretching its elasticity is reduced to a value 15%. The stretching is localised at a point where the yarn shows a drop in temp. across its section, brought about by a brief passage of the yarn across a fixed, polished convexly curved surface maintained at a tem&. 2-30 degrees C below the m. pt. of the polymer. The process enables a satisfactory degree of crimp to be imparted at high speed. The crimps are fine and the elasticity of the yarn is good. There is no deformation of the section of the filaments and no trace of melting on their surfaces.
FR7508829A 1975-03-19 1975-03-19 Crimped polyester yarns based on ethylene terephthalate - with cross-sectional temp gradient set up in specif filaments Granted FR2304698A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7508829A FR2304698A1 (en) 1975-03-19 1975-03-19 Crimped polyester yarns based on ethylene terephthalate - with cross-sectional temp gradient set up in specif filaments
JP2820676A JPS51116222A (en) 1975-03-19 1976-03-17 Manufacture of crimped yarn
DE19762611766 DE2611766A1 (en) 1975-03-19 1976-03-19 METHOD FOR MANUFACTURING A CURLED YARN AND THE PRODUCT SO MANUFACTURED

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7508829A FR2304698A1 (en) 1975-03-19 1975-03-19 Crimped polyester yarns based on ethylene terephthalate - with cross-sectional temp gradient set up in specif filaments

Publications (2)

Publication Number Publication Date
FR2304698A1 true FR2304698A1 (en) 1976-10-15
FR2304698B1 FR2304698B1 (en) 1977-11-25

Family

ID=9152868

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7508829A Granted FR2304698A1 (en) 1975-03-19 1975-03-19 Crimped polyester yarns based on ethylene terephthalate - with cross-sectional temp gradient set up in specif filaments

Country Status (3)

Country Link
JP (1) JPS51116222A (en)
DE (1) DE2611766A1 (en)
FR (1) FR2304698A1 (en)

Also Published As

Publication number Publication date
DE2611766A1 (en) 1976-09-30
FR2304698B1 (en) 1977-11-25
JPS51116222A (en) 1976-10-13

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Legal Events

Date Code Title Description
ST Notification of lapse