Copy paper

Details Copy paper Copy paper

1975-02-20

1978-07-04

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

8162B, 8175, 8DIG3, 282 275, 427146, 427153, 428327, 428514, 428914, B32B 516

Patent

active

040989470

ABSTRACT:
A sheet of paper suitable as a multi-copy paper or once only copy paper is made by coating with a layer of finely particulate mutually adherent particles of a vinyl chloride polymer if pigments are used as colouring matter and of any swellable polymer if a dyed layer is to be used. Generally, the particulate material is swelled using suitable swelling agents and applied to a support layer by any suitable coating process.

REFERENCES:
patent: 2347508 (1944-04-01), Rugeley
patent: 2394688 (1946-02-01), Heyman
patent: 2635942 (1953-04-01), Thummel
patent: 3036924 (1962-05-01), Newman
patent: 3328190 (1967-06-01), Mathieu
patent: 3652200 (1972-03-01), Miyasaka
patent: 3697323 (1972-10-01), Brown
patent: 3768968 (1973-10-01), VAN DER Eltz

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