Title:
DRAWN EXTREMELY FINE BIODEGRADABLE FILAMENT
Document Type and Number:
WIPO Patent Application WO/2005/083165
Kind Code:
A1
Abstract:
Production of an extremely fine biodegradable filament from a biodegradable filament, such as polylactic acid or polyglycolic acid, by simple means without the need to use a special high-precision high-level apparatus. There is provided a process characterized in that a biodegradable filament is heated by infrared luminous flux and the heated starting filament is drawn to 100 times the length or more by a tensile force of ≤10 MPa so that an extremely fine filament having undergone a high molecular orientation whose size is ≤12 μm, generally 2 to 3 μm is obtained.
Inventors:
Suzuki, Akihiro (798-113, Ryuji Kai-shi, Yamanashi, 407-0104, JP)
Application Number:
PCT/JP2005/003257
Publication Date:
September 09, 2005
Filing Date:
February 22, 2005
Export Citation:
Assignee:
YAMANASHI TLO CO., LTD. (4-37, Takeda 4-chome Kofu-shi, Yamanashi, 400-8510, JP)
Suzuki, Akihiro (798-113, Ryuji Kai-shi, Yamanashi, 407-0104, JP)
Suzuki, Akihiro (798-113, Ryuji Kai-shi, Yamanashi, 407-0104, JP)
International Classes:
D02J1/22; D02J13/00; D02J1/22; D02J13/00; (IPC1-7): D02J1/22
Attorney, Agent or Firm:
Kurihara, Kazuhiko (Kurihara Patent Office, 11-5-1002 Takashimadaira 3-chom, Itabashi-ku Tokyo, 175-0082, JP)
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