Paper making and fiber liberation – Processes and products – With coating after drying
Patent
1996-09-19
1997-12-09
Czaja, Donald E.
Paper making and fiber liberation
Processes and products
With coating after drying
1621641, 427391, 428336, 428323, 428331, D21H 2700
Patent
active
056956088
ABSTRACT:
A moisture-proof paper sheet comprising a moisture-proof coating layer formed on a paper sheet substrate and comprising (a) a moisture-proof, film-forming synthetic resin (for example, carboxyl-modified SBR resin), (b) plate crystalline phyllosilicate compound particles with an average size of 5 to 50 .mu.m and an aspect ratio of 5 or more and (c) a moisture-proofness-enhancing agent, for example, urea-formaldehyde condensation reaction products, organoalkoxysilane compounds, or polyamidepolyurea compounds, has an enhanced resistance to water vapor permeation and, after use, the waste moisture-proof paper sheet can be easily re-pulped and recycled.
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Kawamukai Takashi
Koga Shinichi
Mikado Hideyuki
Uchida Hiromi
Yagi Hisanori
Czaja Donald E.
Fortuna Jos'e A.
New Oji Paper Co., Inc.
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