초록 ▼

A method of impregnating a fibrous textile material with a plastic resin so as to produce an impregnated fibrous textile material which can be laminated under heat and pressure to produce a composite article. Such method comprises forming a dispersion of a powdered plastic resin in water which has b

A method of impregnating a fibrous textile material with a plastic resin so as to produce an impregnated fibrous textile material which can be laminated under heat and pressure to produce a composite article. Such method comprises forming a dispersion of a powdered plastic resin in water which has been thickened by means of a water-soluble thickener; applying the dispersion to a fibrous textile material to distribute the resin over the fibers thereof; drying the fibrous textile material treated in this manner to remove the water present; and heating the dried material at a temperature sufficiently elevated to cause the resin to fuse and form a matrix for the fibers.

대표청구항 ▼

A method of impregnating a fibrous textile material with a plastic resin which comprises forming a dispersion of a powdered plastic resin in water; adding to the dispersion a water-soluble thickener selected from the group consisting of polyethylene oxide, ethyl methyl cellulose, hydroxyethyl cellul

A method of impregnating a fibrous textile material with a plastic resin which comprises forming a dispersion of a powdered plastic resin in water; adding to the dispersion a water-soluble thickener selected from the group consisting of polyethylene oxide, ethyl methyl cellulose, hydroxyethyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, methyl cellulose, polyacrylamid, polyvinyl alcohol, polyvinyl methyl ether, starch, agar-agar, casein and gelatin, in an amount sufficient to impart to the dispersion a viscosity of at least about 300 centipoises to 5000 centipoises at 25°C.; applying the dispersion to a fibrous textile material to distribute the resin over the fibers thereof; maintaining the dispersion in contact with the fibrous textile material for a period of time sufficient to allow the fibrous textile material to absorb an amount of the dispersion sufficient to provide from about 0.15 gram of resin per gram of fiber to about 4.0 grams of resin per gram of fiber after drying; drying the fibrous textile material treated in this manner to remove the water present; and heating the dried material at a temperature sufficiently elevated to cause the resin to fuse and form a matrix for the fibers.