Method for reducing hot sticking in molding processes
Assigneedmc2 Degussa Metals Catalysts Cerdec AG
InventorsMichel Ribes, Philippe Papet, Corinne Thomas, Jerome Anquetil
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Abstract
The method of the present invention overcomes the hot-sticking problems between an inorganic non-metallic material (=insulator) to be molded and a forming die by maintaining an assembly comprising a forming die and the insulator in a polarized state during molding. Processes using said method lead to an improved surface quality of the molded insulator. A device for reducing said hot-sticking comprises a die (2) which acts as conductor, an electrode (3) which may act as support for the insulator (1) to be molded, means (5) for polarizing the assembly of said conductor, insulator and electrode which means (5) are connected by live electric wires (4) with said die and electrode.
Claims16
A method for reducing hot sticking between a die and an inorganic nonmetallic insulating material, which comprises:
- maintaining said die and said insulating material in a polarized state when said die and said insulating material are in contact with each other, wherein said insulating material has a glass frit or an enamel on the side of said insulating material which faces said die.
A process for producing a molded inorganic non-metallic insulating material, which comprises:
- contacting an inorganic nonmetallic insulating material with a forming die at a molding temperature,
- molding the insulating material, and thereafter
- separating said molded insulating material and die from each other,
- wherein an assembly comprising said insulating material and said die is polarized during the contacting step, and wherein said insulating material has a glass frit or an enamel on the side of said insulating material which faces said die.
Dependencies are inferred from the claim text.