Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1975-06-16
1976-05-11
Kucia, Richard R.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
2 6, 156224, 156228, 264137, 264258, B29D 910
Patent
active
039564479
ABSTRACT:
A method of making a deep drawn, laminated, non-metallic article having h ballistic resistance and having a smooth edge which comprises, preparing a preform comprising a plurality of superimposed patterns of aromatic polyamide fabric impregnated with a thermoplastic or thermosetting resin, then either (a) trimming the preform to form a peripheral edge thereon so as to allow for application of additional resin in a suitable form to the peripheral edge during the final molding of the preform, applying the additional resin to the peripheral edge of the trimmed preform, and finish molding the article accompanied by flow of the additional resin about the peripheral edge to produce a smooth edge on the final molded article, or (b) applying an epoxy resin film on the outer surface of the preform, or on the superimposed patterns prior to making the preform, around the periphery of the preform or superimposed patterns and overlapping the line around the periphery of the preform on which cutoff occurs in the finish molding step, and finish molding the article, the finish molding being accompanied by cutoff and flow of the epoxy resin over the edge produced by cutoff to produce a smooth edge on the final molded article.
REFERENCES:
patent: 2532442 (1950-12-01), Daly
patent: 2956916 (1960-10-01), Voss
patent: 3018210 (1962-01-01), Frieder
patent: 3582990 (1971-06-01), Frieder
patent: 3878035 (1975-04-01), Gils
Denommee Maurice R.
Durand Philip E.
Furrer Jack F.
McManus Lawrence R.
Edelberg Nathan
Gibson Robert P.
Kucia Richard R.
Rainey Charles C.
The United States of America as represented by the Secretary of
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