Title:
BIODEGRADABLE COMPOSITE STAPLE FIBER AND METHOD FOR PRODUCTION THEREOF, AND THERMALLY ADHESIVE NON-WOVEN FABRIC USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2005/064052
Kind Code:
A1
Abstract:
A biodegradable composite staple fiber which comprises an aromatic aliphatic polyester component exhibiting biodegradability and having a melting point in the range of 180 to 250°C as a first component and a thermoplastic polyester component exhibiting biodegradability and having a melting point in the range of 80 to 150°C as a second component, wherein at least a part of the above second component is exposed on the surface of the fiber, and wherein physical property values in the following (1) and (2) are satisfied: (1) 3 % or less in terms of the dry thermal shrinking percentage of a single fiber, as measured according to JIS-L-1015 (dry thermal shrinking) under the conditions wherein temperature is 100°C, time is 15 minutes and initial load is 0.018 mN/dtex (2 mg/d), and (2) 8 % or less in terms of the dry thermal shrinking percentage of a single fiber, as measured according to JIS-L-1015 (dry thermal shrinking), under the conditions wherein temperature is 140°C, time is 15 minutes and initial load is 0.018 mN/dtex (2 mg/d); a non-woven fabric, a thermally adhesive non-woven fabric using the composite staple fiber; and a method for producing the composite staple fiber. The composite staple fiber is reduced in thermally shrinking property, has biodegradability, is bulky and exhibits soft feeling.
Inventors:
OKAYA HIROSHI (JP)
OKAMOTO KOICHI (JP)
MIZUTANI AKIKO (JP)
OKAMOTO KOICHI (JP)
MIZUTANI AKIKO (JP)
Application Number:
PCT/JP2004/019564
Publication Date:
July 14, 2005
Filing Date:
December 27, 2004
Export Citation:
Assignee:
DU PONT (US)
OKAYA HIROSHI (JP)
OKAMOTO KOICHI (JP)
MIZUTANI AKIKO (JP)
OKAYA HIROSHI (JP)
OKAMOTO KOICHI (JP)
MIZUTANI AKIKO (JP)
International Classes:
D01F8/14; D04H1/541; D04H1/55; (IPC1-7): D01F8/14; D04H1/54
Foreign References:
| JPH0835121A | 1996-02-06 | |||
| JPH07310236A | 1995-11-28 | |||
| JPH1088426A | 1998-04-07 |
Attorney, Agent or Firm:
Tani, Yoshikazu (Akasaka 2-chome Minato-k, Tokyo 52, JP)
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