EP0089819A2
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Preparation of amorphous ultra-high-speed-spun polyethylene terephthalate yarn for texturing
Assignee: EIDP Inc
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Filing: 1983-03-17
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Granted: —
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Expires: 2003-03-17
Abstract
Abstract Spinning of polyethylene terephthalate yarn at speeds in excess of 5000 meters per minute and rapid quenching produces highly oriented, amorphous yarn that gives enhanced bulk on texturing.
Inventors
- 👤 George Vassilatos
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 22:54
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0286; D01; D01D; D01D5/00; D01D5/08; D01D5/088; D01D5/0885; D01F; D01F6/00; D01F6/58; D01F6/62
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
54 words
A process for preparing an oriented amorphous polyethylene terephthalate feed yarn for false-twist texturing comprising spinning polyethylene terephthalate at a windup speed of at least 5,000 m./min. and quenching by means of a liquid located at a distance from the spinneret such that the quenched filaments have a boil-off shrinkage of at least 45%.
Claim 2
Dependent Claim
54 words
A process for preparing an oriented amorphous polyethylene terephthalate feed yarn for false-twist texturing comprising spinning polyethylene terephthalate at a windup speed of at least 5,000 m./min. and quenching by means of a liquid located at a distance from the spinneret such that the quenched filaments have a boil-off shrinkage of at least 45%.
Claim 3
Dependent Claim
18 words
A process according to Claim 1 wherein the spun polyethylene terephthalate filaments are quenched in a water bath.
Claim 4
Dependent Claim
24 words
A process according to Claim 1 or Claim 2 wherein the polyethylene terephthalate is spun at a windup speed of at least 5,500 m./min.
Claim 5
Dependent Claim
74 words
A texturing process for producing textured yarns from feed yarn composed of polyethylene terephthalate yarns, wherein the feed yarn passes continuously to a false-twisting device and a heater is used for setting twist backed up in the yarn by the false-twisting device characterised by providing higher bulk textured yarn by texturing at 1.01 to 1.2X draw ratio a highly oriented, amorphous feed yarn produced by the process _of any one of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
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