Preservation of paper and textile materials
AssigneeE. I. Du Pont de Nemours and Company
InventorAndrew Kelsey Birchenall
Life of this patent
Estimating the term…
Abstract
A method is disclosed for strengthening a paper or textile article. The method involves (a) applying to the article a solution of an amorphous fluoropolymer in a perfluoroalkane solvent; and (b) drying the article. Also disclosed are strengthened paper and textile articles which include a fibrous paper or textile substrate, and amorphous fluoropolymer interconnecting fibers of the substrate.
Claims10
A method for strengthening a cellulosic paper article, comprising the steps of:
- (a) applying to the article a solution of an amorphous fluoropolymer in a perfluoroalkane solvent;
- and
- (b) drying the article so that the solvent is essentially removed.
A strengthened cellulosic paper article, comprising:
- (i) a fibrous cellulosic paper substrate;
- and
- (ii) amorphous fluoropolymer interconnecting fibers of said substrate.
An article of paper or textile comprising:
- a) a pattern or printing, and
- b) an amorphous fluoropolymer coating applied from an amorphous fluoropolymer solution such that the information conveyed by the pattern or printing is not obscured or distorted.
The process of treating an article of paper or textile comprising
- a) applying a pattern or printing to a paper or textile article,
- b) applying to the article a solution of an amorphous fluoropolymer in a perfluoroalkane solvent;
- and
- c) drying the article so that the solvent is essentially removed.
Dependencies are inferred from the claim text.