Process for producing moisture and water-proof paper
AssigneeOji Paper Co., Ltd.
InventorsHideo Gotoh, Akira Igarashi, Reiko Kobayashi, Kiyotake Akiho
Life of this patent
Estimating the term…
Abstract
A coated paper having a moisture and water-proof coating thereon is produced by coating a paper substrate with an aqueous emulsion containing a synthetic rubber latex and a wax emulsion in an amount of the solid wax of 5 to 200 parts by weight per 100 parts by weight of the solid synthetic rubber and, then, drying the coated paper at a temperature the same as or higher than the melting point of the wax. The resultant paper is highly capable of repulping.
Claims15
A process for producing a moisture and waterproof repulpable paper, comprising coating at least one surface of a paper substrate with an aqueous emulsion containing (A) a butadiene-methyl methacrylate copolymer latex and (B) a wax emulsion in an amount of 5 to 200 parts by weight of the solid wax per 100 parts by weight of the solid copolymer and, then, drying said coated paper at an elevated temperature the same as or higher than the melting point of said wax to form a moisture and water-proof coating on said paper substrate surface.
A moisture and water-proof repulpable paper comprising a paper substrate and at least one moisture and waterproof coating formed on at least one surface of said paper substrate, said moisture and water-proof coating having been prepared by coating the surface of said paper substrate with an aqueous emulsion containing a butadiene-methyl methacrylate copolymer latex and a wax emulsion in an amount of 5 to 200 parts by weight of the solid wax per 100 parts by weight of the solid copolymer and, then, drying said coated paper at an elevated temperature the same as or higher than the melting point of said wax.
Dependencies are inferred from the claim text.