IT1114942B - High modulus of elasticity synthetic yarns mfr. - by stretching filaments with crystallinity more than 30 per cent and rapidly cooling at nozzle outlet (NL 3.10.78) - Google Patents
High modulus of elasticity synthetic yarns mfr. - by stretching filaments with crystallinity more than 30 per cent and rapidly cooling at nozzle outlet (NL 3.10.78)Info
- Publication number
- IT1114942B IT1114942B IT3127477A IT3127477A IT1114942B IT 1114942 B IT1114942 B IT 1114942B IT 3127477 A IT3127477 A IT 3127477A IT 3127477 A IT3127477 A IT 3127477A IT 1114942 B IT1114942 B IT 1114942B
- Authority
- IT
- Italy
- Prior art keywords
- stretching
- yarns
- degrees
- high modulus
- nozzle
- Prior art date
Links
Abstract
Pref. the oriented filaments are stretched at temp. varying between m.pt. and 120 degrees C lower than the m.pt., whereby the stretching is effected using a nozzle having a dia. corresp. to 0.5 to 0.9 (0.15 to 0.35) of the yarn dia. and in any case not exceeding 5 mm. Nozzle feeding angle does not exceed 60 degrees and pref. is about 30 degrees. Pref. the stretching is carried out using a tensile force of 5 to 500 kg per cm (50 to 200). Cooling of the yarns may be effected by feeding the yarns leaving the nozzle into a system whose temp. is maintained at least 20 degrees C below that at which the stretching takes place. The yarns produced may be additionally stretched using conventional stretching systems. Used for mfg. yarns from polyethylene, polypropylene, polyethylene oxide, polyoxymethylene, polyacetaldehyde, polyamides, polytetrafluoroethylene or polytrichloroethylene filaments having a high modulus of elasticity. Accurate control of working conditions can be dispensed with.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3127477A IT1114942B (en) | 1977-12-27 | 1977-12-27 | High modulus of elasticity synthetic yarns mfr. - by stretching filaments with crystallinity more than 30 per cent and rapidly cooling at nozzle outlet (NL 3.10.78) |
DE19782814042 DE2814042A1 (en) | 1977-03-31 | 1978-03-31 | PROCESS FOR MANUFACTURING ORIENTED POLYMERS WITH VERY HIGH MODULE OF ELASTICITY |
JP3695078A JPS53122820A (en) | 1977-03-31 | 1978-03-31 | Method of producing high modulus oriented polymer |
BE186484A BE865587A (en) | 1977-03-31 | 1978-03-31 | PROCESS FOR THE PRODUCTION OF VERY HIGH MODULUS ORIENTED POLYMERS |
FR7809552A FR2385823A1 (en) | 1977-03-31 | 1978-03-31 | PROCESS FOR THE PRODUCTION OF VERY HIGH MODULUS ORIENTED POLYMERS |
DK145978A DK145978A (en) | 1977-03-31 | 1978-03-31 | PROCEDURE FOR MAKING ORIENTED POLYMERS WITH A VERY HIGH YOUNG MODULE |
NL7803482A NL7803482A (en) | 1977-03-31 | 1978-03-31 | PROCESS FOR THE MANUFACTURE OF VERY HIGH YOUNG MODULES ORIENTED POLYMERS. |
NO781142A NO781142L (en) | 1977-03-31 | 1978-03-31 | PROCEDURE FOR PREPARATION OF ORIENTED POLYMERS WITH HOEY E-MODULE |
GB12765/78A GB1592936A (en) | 1977-03-31 | 1978-03-31 | High modulus filaments |
SE7803686A SE7803686L (en) | 1977-03-31 | 1978-03-31 | PROCEDURE FOR PREPARING ORIENTATED POLYMERS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3127477A IT1114942B (en) | 1977-12-27 | 1977-12-27 | High modulus of elasticity synthetic yarns mfr. - by stretching filaments with crystallinity more than 30 per cent and rapidly cooling at nozzle outlet (NL 3.10.78) |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1114942B true IT1114942B (en) | 1986-02-03 |
Family
ID=11233377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT3127477A IT1114942B (en) | 1977-03-31 | 1977-12-27 | High modulus of elasticity synthetic yarns mfr. - by stretching filaments with crystallinity more than 30 per cent and rapidly cooling at nozzle outlet (NL 3.10.78) |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1114942B (en) |
-
1977
- 1977-12-27 IT IT3127477A patent/IT1114942B/en active
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