Title:
MELT-SPINNING SPINNERET OF OPTICAL INTERFERENCE FIBER
Document Type and Number:
Japanese Patent JP2010203005
Kind Code:
A
Abstract:
To provide a melt-spinning spinneret capable of maintaining the uniformity of laminated layers even on increasing lamination thickness in order to reflect a long wave length light, in a flat multifilament yarn having an optical interference function.
The melt-spinning spinneret is characterized by making the thickness of the laminated part as uniform by flowing a polymer for a protection layer part A into the outermost part of the laminated part by ≥10% and ≤30% flow rate ratio of the laminated part at a confluent flow passage 8 of 2 kinds of the polymers in order to form the laminated part.
COPYRIGHT: (C)2010,JPO&INPIT
Inventors:
YAMAUCHI JUN
Application Number:
JP2009050599A
Publication Date:
September 16, 2010
Filing Date:
March 04, 2009
Export Citation:
Assignee:
TEIJIN FIBERS LTD
International Classes:
D01D5/32; D01D4/02; D01D5/34
Domestic Patent References:
| JPH111819A | 1999-01-06 | |||
| JP2005163215A | 2005-06-23 | |||
| JPS473842B1 | ||||
| JPS475201B1 | ||||
| JP2006299484A | 2006-11-02 |
Attorney, Agent or Firm:
Hideko Mihara
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