Screen laminate

Claim 2

A process of making a bonded, laminated, open mesh film-screen structure comprising the steps of: coating fiber glass core yarns having an overall diameter of from about 10 mils to about 13 mils with a polyvinyl chloride plastisol containing from about 25 parts to about 100 parts of plasticizer per 100 parts of polyvinyl chloride resin, said polyvinyl chloride coating being applied to said fiber glass core yarns in an amount varying from about 30 percent to about 60 percent by weight; heating said polyvinyl chloride coated fiber glass core yarns to a temperature of from about 275* F. to about 325* F. to effect a partial fusion of said polyvinyl chloride coating to said fiber glass core yarns, while leaving sufficient unabsorbed plasticizer in said plastisol whereby the softening temperature of said plastisol is in the range of from about 325* F. to about 375* F.; cooling said polyvinyl chloride coated fiber glass core yarns; weaving said polyvinyl chloride coated fiberglass core yarns into an open mesh fabric having an end count between 6 and 30 per inch and a pick count between 6 and 30 per inch; positioning a polyvinyl chloride film having a thickness of from about 0.5 mil to about 5 mils in facewise engagement with said open mesh fabric to form a laminated open mesh film-screen structure; applying pressure to said laminated open mesh film-screen structure and exposing the same to a relatively higher temperature of from about 325* F. to about 375* F. to complete the fusion of said polyvinyl chloride coating to said fiber glass core yarns and to form a bonded, laminated, open mesh film-screen structure having a peel strength of at least about 500 grams per inch.