Title:
HEAT-RESISTANT HIGH-SHRINKAGE PAPER
Document Type and Number:
Japanese Patent JPH04257398
Kind Code:
A
Abstract:
PURPOSE: To solve the problem of the lowering of reliability caused by air trapped between electrical insulation papers or an electrical insulation paper and a conductor and the problem of the increase of the structure cost caused by the increase of labor for coping with the above trouble.
CONSTITUTION: The objective heat-resistant high-shrinkage paper is a synthetic paper having a heat-shrinkage of ≥7% at 250°C and composed of 80-20wt.% of an aromatic polyamide pulp and 20-80wt.% of heat-resistant fiber. The heat- resistant fiber is amorphous judged from the X-ray pattern. The sheet is produced by the wet paper-making of fiber having an S300 (dry-heat shrinkage at 300°C) of ≥69%.
Inventors:
ONUMA NORIYUKI
Application Number:
JP3505491A
Publication Date:
September 11, 1992
Filing Date:
February 06, 1991
Export Citation:
Assignee:
TEIJIN LTD
International Classes:
H01B3/52; D21H13/26; D21H19/72; D21H27/00; D21H27/12; H01F27/32; (IPC1-7): D21H13/26; D21H19/72; D21H27/12; H01B3/52; H01F27/32
Attorney, Agent or Firm:
Maeda Junhiro