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
Application number
IT3127477A
Other languages
Italian (it)
Inventor
Giancarlo Locati
Original Assignee
Snam Progetti
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to IT3127477A priority Critical patent/IT1114942B/en
Application filed by Snam Progetti filed Critical Snam Progetti
Priority to FR7809552A priority patent/FR2385823A1/en
Priority to DE19782814042 priority patent/DE2814042A1/en
Priority to JP3695078A priority patent/JPS53122820A/en
Priority to BE186484A priority patent/BE865587A/en
Priority to DK145978A priority patent/DK145978A/en
Priority to NL7803482A priority patent/NL7803482A/en
Priority to NO781142A priority patent/NO781142L/en
Priority to GB12765/78A priority patent/GB1592936A/en
Priority to SE7803686A priority patent/SE7803686L/en
Application granted granted Critical
Publication of IT1114942B publication Critical patent/IT1114942B/en

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.
IT3127477A 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) IT1114942B (en)

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)

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