Molded composite polymeric body with anti-static properties and process for making same
AssigneeBattenfeld Maschinenfabrik GmbH
InventorWerner Fillmann
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Abstract
A body of polymeric material, comprising a core--e.g. of foam plastic--surrounded by a skin of greater density, includes a filler of metallic or other electrically conductive particles distributed throughout the core or at least in an intermediate layer separating an inner part of the core from the skin. The filler particles, preferably consisting of iron or aluminum, are injected together with all or part of the core material during the molding of the body.
Claims19
A composite polymeric body comprising a homogeneous skin of a first polymeric material surrounding a core of a second polymeric material, and a filler of electrically conductive particles distributed at least throughout an interface of said skin and said core in a thin antistatic electronic shielding and induction protection layer bounded by said skin.
A process for molding a body with a skin formed from a homogeneous first polymeric material surrounding a core formed from a homogeneous second polymeric material, comprising the steps of injecting said first polymeric material into a mold cavity in a quantity sufficient to form said skin, injecting said second polymeric material into said mold cavity in a quantity sufficient to occupy the rest of the cavity, and admixing a filler of electrically conductive particles with said second polymeric material during at least part of the injection thereof to form a thin antistatic electronic shielding and induction protection layer bounded by said skin.
Dependencies are inferred from the claim text.