Title:
METHOD FOR PRODUCING FLAT YARN COMPOSED OF THERMOPLASTIC SYNTHETIC RESIN
Document Type and Number:
Japanese Patent JP2002363820
Kind Code:
A
Abstract:
To provide a method for producing a flat yarn composed of a thermoplastic synthetic resin having excellent qualities in space and energy savings.
This method for producing a flat yarn composed of a thermoplastic synthetic resin is characterized in that a traveling yarn is irradiated with a laser beam under conditions of 5≤χin≤25, 0.85≤vout/vin≤1.15, 400≤vout and 5≤χout-χin (χin is crystallinity [%] of fiber immediately before laser heat treatment; χout is crystallinity [%] of fiber immediately after laser heat treatment; vin is yarn speed [m/min] immediately before laser heat treatment; vout is yarn speed [m/min] immediately after laser heat treatment) and heat-treated.
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Inventors:
FUNATSU YOSHIJI
KURODA MASATO
TANIGUCHI ATSUSHI
KURODA MASATO
TANIGUCHI ATSUSHI
Application Number:
JP2001170579A
Publication Date:
December 18, 2002
Filing Date:
June 06, 2001
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
D01F6/62; D01D5/084; D01D10/02; D02J1/22; (IPC1-7): D01D10/02; D01D5/084; D01F6/62; D02J1/22
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