Molding nonwoven, needle punched fabrics into three dimensional

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28112, 156 72, 156148, 156242, 264126, 428 95, 428284, 428287, 428296, 428298, 428300, 428921, B32B 300

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042580935

ABSTRACT:
Three dimensional shapes, typically of convex-concave form and having sufficient rigidity to maintain that form are molded from nonwoven, needlepunched fabrics containing certain ethylene-vinyl acetate fibers in admixture with fibers of a higher melting point polymer. Molding is accomplished by heating the fabric to a temperature whereat the ethylene-vinyl acetate fibers soften or melt but below the melting point of the other fibers and thereafter pressing the fabric between the mating faces of a mold pair and allowing the ethylene-vinyl acetate fibers to solidify and cool while in the mold.

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