Biaxially oriented laminate polyester film

Details Biaxially oriented laminate polyester film Biaxially oriented laminate polyester film

1997-01-24

1999-07-06

Chen, Vivian

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428212, 428327, 428330, 428331, 428402, 428480, 428694TR, 428694BR, 428694ST, 428694SL, 428694SG, 428910, B32B 2706, B32B 2720, B32B 2736

Patent

active

059195509

ABSTRACT:
A biaxially oriented laminate polyester film consisting of a polyester layer A containing lubricant particles I and II and a polyester layer B laminated on one side of the polyester A, wherein each of the lubricant particles I and II contains non-agglomerated particles in a proportion of 80 to 100%; the lubricant particles I are selected from the group consisting of silica, calcium carbonate and crosslinked polymer particles and have an average particle diameter of 0.3 to 1.0 .mu.m and are contained in an amount of 0.005% by weight or more but less than 0.1% by weight; the lubricant particles II are selected from the group consisting of silica and crosslinked polymer particles and have an average particle diameter which satisfies the following expression (1):

REFERENCES:
patent: 4818581 (1989-04-01), Katoh et al.
patent: 5164439 (1992-11-01), Sakamoto et al.
patent: 5270096 (1993-12-01), Kato et al.
patent: 5429855 (1995-07-01), Kotani et al.
patent: 5532047 (1996-07-01), Okazaki et al.
patent: 5670236 (1997-09-01), Kotani et al.

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