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Title:
METHOD FOR PRODUCING MONOFILAMENT CONTAINING POLYVINYLIDENE FLUORIDE
Document Type and Number:
Japanese Patent JP2008174876
Kind Code:
A
Abstract:

To provide a production method suitable for industrial production of a monofilament containing a polyvinylidene fluoride, having high tensile strength and high knot strength, sufficiently excellent in impact resistance and having also characteristics useful especially for marine materials, represented by fishline.

The method for producing a core-sheath conjugate structure monofilament containing a polyvinylidene fluoride includes applying high-temperature and short-time tension heat treatment for 0.05-1 sec. at 1.0-1.2 times draw ratio in an inert gas heated to 550-1,000C in heat treatment under relaxation after one stage drawing, when drawing the monofilament in one stage or multistage not lower than two stage after melt-spinning and cooling and then carrying out heat treatment under relaxation.


Inventors:
UCHIYAMA YUSUKE
OKANO MAKOTO
SATO TOMOKAZU
Application Number:
JP2007000010303
Publication Date:
July 31, 2008
Filing Date:
January 19, 2007
Export Citation:
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Assignee:
TORAY INDUSTRIES
TORAY MONOFILAMENT CO
International Classes:
D01F8/10; D01F6/12; D02G3/02; D02J1/22
Attorney, Agent or Firm:
Tomonori Iwami