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Title:
SHEATH-CORE CONJUGATE FILAMENT
Document Type and Number:
Japanese Patent JP2009299209
Kind Code:
A
Abstract:

To provide a thermobondable filament having a high strength and alkali resistance sufficiently usable for industrial materials used in an alkali environment by forming the filament into a sheath-core conjugate filament using a polyester at the core part and a polyethylene at the sheath part.

The sheath-core conjugate filament is formed of the core part comprising a polyethylene terephthalate and the sheath part comprising the polyethylene having a melting point lower than that of the core part, the sheath-core conjugate filament has a breaking strength of not less than 3.5 cN/dtex, and a strength retention after subjected to alkali treatment in 10% sodium hydroxide solution at 70C for 100 min of 80%.


Inventors:
MIYAZAKI SHUJI
ISHIBAI SHIRO
Application Number:
JP2008000152981
Publication Date:
December 24, 2009
Filing Date:
June 11, 2008
Export Citation:
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Assignee:
UNITIKA FIBERS LTD
International Classes:
D01F8/06; D01F8/14
Domestic Patent References:
JPH06299470A1994-10-25
JP2001271270A2001-10-02
JP2001214388A2001-08-07