E.i. Dupont De Nemours and Company

Lloyd Fox

M Lana Sheer

John C Solenberger

This invention relates to metal-containing inserts, such as transformers, that are encapsulated, via compression molding processes, with at least one wet lay thermoplastic sheet material and that do not experience significant visible cracking during heat cycling.

Inserts encapsulated with a thermoplastic sheet material via compression

A compression molding process for encapsulating a metal-containing insert with at least one layer of a thermoplastic sheet prepared via a wet lay process. The thermoplastic sheet material contains a thermoplastic polymeric material and a glass fiber material, and the compression molding process includes the steps of

Process for encapsulating inserts with wet-laid material via compression

A process for manufacturing a polymeric encapsulated 'E' core transformer, a polymeric encapsulated 'C' core transformer, and a polymeric encapsulated toroidal shaped transformer, said process requiring considerably less time to complete than do conventional transformer manufacturing processes.

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North East, MD, United States of America

Lloyd Fox