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US 6,132,669 AGranted
Process for preparing a molded article
AssigneeThe Elizabeth and Sandor Valyi Foundation, Inc.
InventorsEmery I. Valyi, deceased, Arthur K. Delusky, Thomas M. Ellison, Herbert Rees
Life of this patent
Estimating the term…
Abstract
A film is placed over a mold cavity and molten plastic deposited thereon to form a combination of a film with molten plastic thereon. The film-molten plastic combination is then formed in said mold cavity into a molded article in the shape of the mold cavity.
Claims54
Process for preparing a molded article which comprises:
- providing a mold with an open mold cavity having a mold surface defining a mold cavity shape;
- clamping a film over said open mold cavity and supporting said film in a position spaced from said mold surface;
- providing molten plastic delivery means above said film and depositing a metered amount of molten plastic onto said film, while supported, from said delivery means in a plurality of delivery locations along a facing surface of said film to deliver the molten plastic in a layer across said facing surface of said film to form a combination of a film with the layer of molten plastic thereon;
- removing said deliverv means;
- and
- subsequently forming said combination in said mold cavity against said mold surface to form a molded article having the shape of said mold cavity, wherein said film is an outer layer of the molded article.
3 more elements
Process for preparing a molded article which comprises:
- providing a mold with an open mold cavity having a mold surface defining a mold cavity shape;
- clamping a film over said open mold cavity and supporting said film in a position spaced from said mold surface;
- providing molten plastic delivery means above said film and depositing a metered amount of molten plastic onto said film, while supported, from said delivery means while said delivery means traverses said film to deliver the molten plastic in a layer across a facing surface of said film to form a combination of a film with the layer of molten plastic thereon;
- removing said delivery means;
- and
- subsequently forming said combination in said mold cavity against said mold surface to form a molded article having the shape of said mold cavity, wherein said film is an outer layer of the molded article.
3 more elements
Dependencies are inferred from the claim text.