Coated paper
AssigneeStora Feldmuhle AG
InventorsWerner Bergmann, Paul H. Dahling
Life of this patent
Estimating the term…
Abstract
In the abstract No. 75-35061W of the WPI, Week 7521, Derwent P. L. London (citing JP-A-118906/1974) there is disclosed a paper with a cover coat applied by the cast coating process, for whose preparation first a prime coat is applied whose pigment composition consists of 30 wt. % of kaolin and 60 wt. % of a polystyrene pigment, and whose binding agent composition includes 10 weight-parts casein and 16 weight-parts of a carboxylated butadiene-styrene latex. After this prime coat has dried a mixture of 80 weight-parts of kaolin, 20 weight-parts of calcium carbonate, 10 weight-parts of casein and 8 weight-parts of a butadiene-styrene latex is applied and the applied composition is pressed at a temperature of 90.degree. C. against a chrome-lacquered surface.
Claims11
A one-side coated paper comprising a calendered coating applied to one side of raw paper, said coating consisting of one or two layers formed with a composition containing a first film-forming synthetic resin binding agent, a natural binding agent and a mineral pigment, a cover coat applied to said calendered coating by the cast coating method using a mineral pigment-free composition containing a second film-forming synthetic resin binding agent and a natural binding agent, said second film-forming synthetic resin binding agent having a film-forming temperature of less than 40.degree. C., and said mineral pigment-free composition containing from 20 to 60 wt. % of a natural binding agent, based on the total binding agent content.
The process for the production of a one-side coated paper, which comprises applying to raw paper one or two layers of a composition containing a film-forming synthetic resin binding agent, a natural binding agent and a mineral pigment, drying said coating, calendering said dry coating, and applying to said calendered coating by the cast coating method a mineral pigment-free cover coat composition containing a film-forming synthetic resin having a film-forming temperature below 40.degree. C. and 20 to 60 wt. % of a natural binding agent, based on the total binding agent content.
Dependencies are inferred from the claim text.