Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Weight per unit area specified
Patent
1980-12-17
1982-07-27
Lusignan, Michael R.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Weight per unit area specified
427336, 427361, 427364, 427366, 427391, 428511, 427512, 428513, 428514, 428535, B32B 2106
Patent
active
043418392
ABSTRACT:
The present invention resides broadly in a method for the preparation of paper having improved water and/or solvent resistance which comprises applying to a base paper a plastic particle containing formulation, and then wetting the formed coating with a solvent to which the plastic particles are sensitive. The present invention is particularly applicable to the preparation of electrostatic paper masters of improved water resistance for lithographic printing having a photoconductive layer and a barrier coat to which the photoconductive layer is applied. The barrier coat contains a binding amount of a binder resin and filler at least a portion of which is an amount of said plastic particles sensitive to the solvent system of the photoconductive layer, the amount of plastic particles and sensitivity being sufficient to materially increase water resistance.
The present invention is particularly directed to a novel water and/or solvent resistant coated paper product wherein the coating comprises a binder and filler, a sufficient amount of the filler comprising plastic particles in a coalesced state to provide a thin, substantially continuous plastic film, the binder being hydrophobic.
REFERENCES:
patent: 3578493 (1971-05-01), Smith
patent: 3716504 (1973-02-01), Lindemann et al.
patent: 3765924 (1973-10-01), Craven
patent: 3793025 (1974-02-01), Vrancken et al.
patent: 3949138 (1976-04-01), Heiser
patent: 3996056 (1976-12-01), Muller
patent: 4198471 (1980-04-01), Nelson
Shaw Michael J.
Thiessen Robert J.
Allied Paper Incorporated
Lusignan Michael R.
Page Thurman K.
Thomas Richard H.
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