Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1976-06-17
1978-07-25
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 468, 264255, 264309, 264321, 425388, B29C 1704, B29D 302, B29D 900
Patent
active
041029640
ABSTRACT:
Method for manufacturing rigid articles having a resiliently deformable cushioned surface in a vacuum forming operation wherein a drapable sheet of resiliently deformable cushioning material is vacuum formed into a desired shape on the shaping surface of a vacuum forming mold, and wherein vacuum is maintained on the mold to retain the sheet in dimensionally fixed configuration on the shaping surface while the exposed surface of the sheet is intimately bonded to a rigid support layer to provide a rigid cushioned article. The apparatus used comprises an assembly line including a portable vacuum forming mold which is transported between spaced treating stations on the assembly line while at all times maintaining vacuum on the mold to retain the cushioning material in dimensionally fixed configuration until intimately bonded to and rigidized by a layer of supporting material.
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patent: 3816234 (1974-06-01), Winfield
patent: 3841819 (1974-10-01), Diamond
Facetglas, Inc.
Manning, Jr,. Wellington M.
Silbaugh Jan H.
Wilbrun, Jr. Luke J.
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