Coated paper and process for making the same

Details Coated paper and process for making the same Coated paper and process for making the same

1994-03-08

1998-10-13

Chen, Vivian

Stock material or miscellaneous articles

Composite

Of carbohydrate

427301, 427324, 427326, 427333, 427337, 427338, 427394, 427395, 427411, 427414, 536 3, 162135, 162136, 162137, 162139, 131365, 4285375, B32B 902, B32B 906, B32B 2902, B32B 2906

Patent

active

058209980

ABSTRACT:
A process of making a coated paper comprises the following steps: 1) providing a paper layer composed of a blend of pulp fibers and particulate material containing polyvalent metal cations, 2) applying a acidified alginate solution of a material selected from salts and derivatives of alginic acid to cover at least a portion of the paper, 3) reacting the salts and/or derivatives of alginic acid with polyvalent metal cations in the paper to form a polymer coating, and 4) drying the paper and polymer coating. The permeability of the coated paper is generally at least about 75 percent less than the permeability of an identical uncoated portion of the paper. The solution of alginate material may be partially cross-linked. The alginate solution may be deposited utilizing gravure printing techniques. Also disclosed is a coated paper and a wrapper for a smoking article.

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