Formwerkzeug und Verfahren zu seiner Verwendung

EP 2269793 A1 UPAB: 20110119 NOVELTY - The molding tool (10) comprises a base body (11) made of a first material, where a partial surface of the base body is provided with a first coating (22) containing a second material, a contact element connected with the partial surface of the coating, so that the coating is connectable over the contact element with an electrical current source. The base body contains a cavity (14). The first coating has a specific resistance of less than 1 Ohm cm. A second coating is disposed between the surface of the base body and the first coating at the partial surface and contains a third material. DETAILED DESCRIPTION - The molding tool (10) comprises a base body (11) made of a first material, where a partial surface of the base body is provided with a first coating (22) containing a second material, a contact element connected with the partial surface of the coating, so that the coating is connectable over the contact element with an electrical current source. The base body contains a cavity (14). The first coating has a specific resistance of less than 1 Ohm cm. A second coating is disposed between the surface of the base body and the first coating at the partial surface and contains a third material, which has a larger specific resistance than the second material. The third coating is applied on the surface of the first coating at the partial surface and contains a fourth material, which has a larger specific resistance than the second material. A thermoelement is arranged on the surface of the third coating and/or the first coating. The first coating, second coating and/or the third coating have a thickness of more than 100 nm, and are implemented as layer system with individual layers. The contact element contains an adhesive mediator layer, a soldering layer and/or an oxidation protective layer. An INDEPENDENT CLAIM is included for a method for producing a molded article. USE - Molding tool for molding an article made of chalcogenide glass or optical glass or made of thermoplastic, duroplastic or elastomer (all claimed). ADVANTAGE - The molding tool is capable of rapidly and simply molding the article with less energy consumption