Film for high heat-sensitive stencil paper

Details Film for high heat-sensitive stencil paper Film for high heat-sensitive stencil paper

1994-03-23

1995-11-14

Buffalow, Edith

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428323, 428327, 428329, 428480, 428910, B32B 506

Patent

active

054665213

ABSTRACT:
Disclosed is a film for high heat-sensitive stencil paper, comprising a biaxially oriented film having a thickness of 0.5 to 6.0 .mu.m and formed from a polyester composition comprising polybutylene terephthalate and another polyester,
a ratio of the polybutylene terephthalate in the whole polyester being 20 to 80 wt %, a maximum value of average heat shrinkage stresses in the machine and transverse directions of the film measured at a film temperature of 60.degree. to 140.degree. C. being more than 300 g/mm.sup.2, and a heat shrinkage of the film by treatment at 100.degree. C. for 3 minutes being not less than 20%.

REFERENCES:
patent: 4766033 (1988-08-01), Yoshimura et al.
patent: 5061565 (1991-10-01), Aoki et al.

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