MELT-SPINNING PROCESS AND MELT-SPINNING APPARATUS FOR PRODUCING A CRIMPED YARN
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Aug 6, 2015
app pub date -
Aug 8, 2013
filing date -
Aug 17, 2012
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A melt-spinning process and a melt-spinning apparatus produce a crimped yarn. By means of a spinning device, a filament bundle is generated from a thermoplastic polymer, is drawn after cooling and is compressed into a yarn plug in a stuffing chamber. The yarn plug is opened up into a crimped yarn and wound into a bobbin. In order to obtain as high a crimp resistance of the yarn as possible, amorphous fractions in the molecular structure of the yarn material are avoided after drawing. This is achieved by means of relaxation treatment after drawing and before compression, a minimum yarn pull force of >0.05 cN/dtex with a relaxation temperature in the range of 120° C. to 245° C. being maintained.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully