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Conductive Thermoplastic Foam

IP.com Disclosure Number: IPCOM000086314D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Crosby, EG: AUTHOR [+3]

Abstract

Thermoplastic beads containing a blowing agent are vacuum metallized with a conductive material, such as aluminum or stainless steel. The plated beads are handled and molded in the conventional methods used for unplated plastic beads. When these beads are heated in a mold, the plastic softens and the blowing agent is relessed, as is conventional.

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Conductive Thermoplastic Foam

Thermoplastic beads containing a blowing agent are vacuum metallized with a conductive material, such as aluminum or stainless steel. The plated beads are handled and molded in the conventional methods used for unplated plastic beads. When these beads are heated in a mold, the plastic softens and the blowing agent is relessed, as is conventional.

The blowing agent expands the softened plastic and ruptures the thin metal coating. Where the coatings have ruptured, the plastic beads flow together and form a unitary plastic body. The metal coatings are tightly compacted in a matrix that extends throughout the molded plastic body. The composite material has good electrical and thermal conductivity.

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