Apparatus for molding a protective pad

Details Apparatus for molding a protective pad Apparatus for molding a protective pad

1976-08-30

1977-10-25

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

425 81, 425501, 425504, 425508, 425519, 128149, 425388, B29C 2714

Patent

active

040553884

ABSTRACT:
An apparatus 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.

REFERENCES:
patent: 3424827 (1969-01-01), Galigia et al.
patent: 3484510 (1969-12-01), Corazza
patent: 3541645 (1970-11-01), Bunting
patent: 3726620 (1973-04-01), Morton
patent: 3854860 (1974-12-01), Haag

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