EP0244216A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Low crystallinity polyester yarn produced at ultra high spinning speeds
Assignee: EIDP Inc
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Filing: 1987-04-29
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Granted: —
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Expires: 2007-04-29
Abstract
Abstract Spinning of polyethylene terephthalate yarn at speeds in excess of 5000 meters per minute using a gas management technique of the gas surrounding the threadline to control the temperature and attenuation profiles of a spinning threadline provides a means to produce a low crystallinity polyester yarn with a relatively high elongation to break.
Inventors
- 👤 George Vassilatos
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 22:42
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/62; D01D; D01D5/00; D01D5/08; D01D5/088; D01D5/092
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
129 words
A continuous filament polyester yarn melt spun in a path from a spinning pack at a spinning speed of at least 5 km/min controlled by a withdrawal means by directing a gas into a zone enclosing said path, said zone extending from said spinning pack to a location between the spinning pack and the withdrawal means maintaining said zone under superatmospheric pressure of less than 1 kg/cm 2 and increasing the velocity of the gas as it leaves the zone to a level greater than the velocity of the filaments, said yarn having a density in the range of from about 1.348 to about 1.370 grams per ml, having an elongation break in the range of from 30% to 120% and having a boil-off-shrinkage which is at least 10%.
Claim 2
Dependent Claim
129 words
A continuous filament polyester yarn melt spun in a path from a spinning pack at a spinning speed of at least 5 km/min controlled by a withdrawal means by directing a gas into a zone enclosing said path, said zone extending from said spinning pack to a location between the spinning pack and the withdrawal means maintaining said zone under superatmospheric pressure of less than 1 kg/cm 2 and increasing the velocity of the gas as it leaves the zone to a level greater than the velocity of the filaments, said yarn having a density in the range of from about 1.348 to about 1.370 grams per ml, having an elongation break in the range of from 30% to 120% and having a boil-off-shrinkage which is at least 10%.
Claim 3
Dependent Claim
15 words
The yarn of claim 1, said density being from 1.350 to 1.360 grams per ml.
References Cited (Backward Citations)
No citation records indexed.
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