White resin film with excellent printability

Details White resin film with excellent printability White resin film with excellent printability

1994-09-21

1996-02-06

Ryan, Patrick J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

428195, 4283073, 428323, 428330, 428340, 428500, B23B 326

Patent

active

054894719

ABSTRACT:
A white resin film having microvoids is disclosed, which is obtained by stretching a thermoplastic resin film comprising (a) from 40 to 65% by weight of a polypropylene resin, (b) from 1 to 20% by weight of ground calcium carbonate having a particle size of from 1 to 6 .mu.m and a specific surface area of from 10,000 to 34,800 cm.sup.2 /g, and (c) from 30 to 50% by weight of precipitated calcium carbonate having a particle size of not smaller than 0.5 .mu.m and a specific surface area of from 35,000 to 50,000 cm.sup.2 /g so as to have a void volume of from 20 to 70%. The film exhibits satisfactory printability in terms of whiteness and ink drying properties.

REFERENCES:
patent: 4341880 (1982-07-01), Toyoda et al.
patent: 4460637 (1984-07-01), Miyamoto et al.
patent: 4663216 (1987-05-01), Toyoda et al.
patent: 5176953 (1993-01-01), Jacoby et al.
patent: 5204188 (1993-04-01), Nitta et al.
patent: 5397637 (1995-03-01), Asami et al.

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