Biaxially oriented polyester film

Details Biaxially oriented polyester film Biaxially oriented polyester film

1992-12-21

1994-02-08

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428327, 428328, 428329, 428331, 428694SG, B32B 702, B32B 516

Patent

active

052846997

ABSTRACT:
A biaxially oriented polyester film having excellent scratch resistance and chipping resistance by the inclusion of particles (A) having an average primary particle diameter of 5-300 nm, an average degree of aggregation of 5-100 and a Mohs' hardness of 6-10 by the content of 0.01-5 wt. %. The scratch resistance and chipping resistance of the film can be further increased by the inclusion of particles (B) having an average particle diameter of 0.3-3 .mu.m, a Mohs' hardness smaller than that of particles (A) and/or non-incorporated particles.

REFERENCES:
patent: 3884870 (1975-05-01), Dodson et al.
patent: 3928697 (1975-12-01), Mallinson et al.
patent: 4626463 (1986-12-01), Fujishiro et al.
patent: 4778714 (1988-10-01), Woolley et al.
patent: 4922675 (1990-05-01), Sato et al.
patent: 4990400 (1991-02-01), Endo et al.
patent: 5006589 (1991-04-01), Sakamoto et al.
patent: 5096773 (1992-03-01), Sakamoto

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