Method for molding a protective pad

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

156245, 156285, 264 451, 264 464, 264 91, 264112, 264234, 264257, 264259, 264261, 264DIG7, B29C 2900, B29D 900

Patent

active

039922383

ABSTRACT:
A method for molding a protective pad or the like, and which includes a convex mold surface having a plurality of perforations therethrough, and a cooperating concave mold surface also having a plurality of perforations therethrough. The two mold surfaces are mounted for relative movement with respect to each other and such that the concave mold surface initially faces upwardly to receive the molding material therein, and then is inverted and translated downwardly into face to face relationship with the convex mold surface. The apparatus includes a vacuum system for drawing a partial vacuum beneath the concave mold surface to maintain a predetermined distribution of molding material on the concave mold surface during the movement thereof, and means is provided for introducing steam into the mold cavity to cure the molding material.

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