Title:
METHOD FOR PRODUCING POLYESTER FIBER AND SPINNING MOUTH PIECE FOR MELT SPINNING
Document Type and Number:
WIPO Patent Application WO/2005/059212
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a method for producing a polyester fiber exhibiting the strength and the dimensional stability required for the application as a rubber reinforcing material, with improved productivity. [MEANS FOR SOLVING PROBLEMS] A method of melt-spinning a polyester fiber having an intrinsic viscosity of 0.85 dl/g or more, wherein the total number of holes (11) per a spinning mouth piece (10) is 250 or more and the number of holes (11) per the area of the spinning mouth piece is 1.5 /cm2 or more, the portion (12) of the hole (11) for the discharge from the inside has a hole diameter (D) of 0.5 mm or more, and the ratio (L/D) of the hole length (L) of the portion (12) of the hole for the discharge to the hole diameter (D) is 3.0 or less.
Inventors:
KOHASHI MASANAO (JP)
Application Number:
PCT/JP2004/018801
Publication Date:
June 30, 2005
Filing Date:
December 16, 2004
Export Citation:
Assignee:
TOYO BOSEKI (JP)
KOHASHI MASANAO (JP)
KOHASHI MASANAO (JP)
International Classes:
D01D4/02; D01F6/62; (IPC1-7): D01F6/62; D01D4/02
Foreign References:
| JPH05504383A | 1993-07-08 | |||
| JPH01282306A | 1989-11-14 | |||
| JPS63120109A | 1988-05-24 | |||
| JP2000273714A | 2000-10-03 | |||
| JPS5263416A | 1977-05-25 |
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