Title:
SHEET-SHAPED BASE MATERIAL OF ARAMID FIBER FOR ELECTRIC INSULATION AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2001271287
Kind Code:
A
Abstract:
To suppress the production of foreign matters and increase the product yield of a sheet-shaped base material of an aramid fiber for electric insulation which comprises singly or mainly polyparaphenyleneterephthalamide fiber.
The polyparaphenyleneterephthalamide has been treated by pressure cooker processing (pressure of about 2,000 hPa; temperature of about 120°C; and processing time of about 20 hr). At first, a polyparaphenyleneterephthalamide having larger crystal sizes and increased strength is subjected to the pressure cooker processing to construct a sheet- shaped base material (nonwoven fabric or woven fabric) singly or mainly of the fiber.
Inventors:
HIRAOKA KOICHI
KURUMAYA SHIGERU
MAKIMURA NORIO
KURUMAYA SHIGERU
MAKIMURA NORIO
Application Number:
JP2000077457A
Publication Date:
October 02, 2001
Filing Date:
March 21, 2000
Export Citation:
Assignee:
SHIN KOBE ELECTRIC MACHINERY
International Classes:
C08J5/06; D21H13/26; H01B3/30; H01B3/50; H01B17/56; H05K3/46; (IPC1-7): D21H13/26; H01B3/30; H01B3/50; H01B17/56; H05K3/46
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