Resin-coated paper

Details Resin-coated paper Resin-coated paper

1993-01-25

1994-07-12

Buffalow, Edith

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428342, 428402, 428510, 428511, 428513, 503227, B32B 300

Patent

active

053287495

ABSTRACT:
This invention provides polypropylene-based resin-coated paper using paper as substrate and having excellent smoothness, especially the one which, when used for printing or heat transfer recording, keeps free from formation of white dots and occurrence of density unevenness in images, and thus is suited for printing use or heat transfer recording use. At least one side of the paper substrate is coated with a resin. The paper used as substrate is characterized by the fact that the unevenness in film thickness in machine direction (unevenness index) as measured by a film thickness meter is less than a specified value. The resin used for coating is a compounded resin composition comprising a polyethylene-based resin and a random polypropylene-based resin obtained by randomly copolymerizing principally ethylene and propylene, with the ethylene proportion being in a specified range, wherein the ratio by weight of the polyethylene-based resin to the random polypropylene-based resin is in a specified range, and the composition has been subjected to at least one round of kneading.

REFERENCES:
patent: 4085949 (1978-04-01), Asao
patent: 5006502 (1991-04-01), Fujimura et al.
patent: 5233924 (1993-08-01), Ohba

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