IT1022307B - Polymer filaments made and modified at high speed - with continuous tension throughout solidification and conditioning stages - Google Patents
Polymer filaments made and modified at high speed - with continuous tension throughout solidification and conditioning stagesInfo
- Publication number
- IT1022307B IT1022307B IT2769974A IT2769974A IT1022307B IT 1022307 B IT1022307 B IT 1022307B IT 2769974 A IT2769974 A IT 2769974A IT 2769974 A IT2769974 A IT 2769974A IT 1022307 B IT1022307 B IT 1022307B
- Authority
- IT
- Italy
- Prior art keywords
- temp
- speed
- filaments
- modified
- solidification
- Prior art date
Links
Abstract
A method of making and structurally modifying, at increase speed, polymer filaments and sheets is as follows: a molten, crystalline polymer suitable for spinning is extruded through a nozzle to form a melted filaments; these are passed longitudinally through a solidi cation zone in a gas (air) atmosphere at a temp. (10-40 degrees C) below the solidification temperature, thus giving solid filaments or sheets; this product is passed longitudinally through a conditioning zone in a gas (air) atmosphere at a temp. above solidification temp. but below fusion temp. at a speed such that the residence time is 0.0001-0.8 (0.03-0.09) seconds, thus obtaining substantial crystallisation of the material; the product is drawn out of the conditioning zone at a speed of 1,000-6,000 (2,500-3,500) metres/minute, under a tension of 0.1-1.0 g/denier. The entire process is carried out without any interruption to the tension over the length of the material from the spining nozzle to the drawing point at exit from the conditioning zone.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/400,863 US3946100A (en) | 1973-09-26 | 1973-09-26 | Process for the expeditious formation and structural modification of polyester fibers |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1022307B true IT1022307B (en) | 1978-03-20 |
Family
ID=23585330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2769974A IT1022307B (en) | 1973-09-26 | 1974-09-25 | Polymer filaments made and modified at high speed - with continuous tension throughout solidification and conditioning stages |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1022307B (en) |
-
1974
- 1974-09-25 IT IT2769974A patent/IT1022307B/en active
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