US 6,656,305 B1Granted

Method for producing a stove-enameled molded component

AssigneeThyssen Krupp Stahl AG

InventorsCetin Nazikkol, Edgar Panek, Friedrich Behr

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Abstract

The invention relates to a process for producing an enamel baked molded component made from a double-layer plate comprising two cover plates with an intermediate epoxy resin layer that is glued to the cover plates. The process comprises introducing the epoxy resin between the cover plates prior to its polymerization to maintain an adhesive connection between the cover plates and the intermediate layer, while at the same time allowing for deformation of the double-layer plate by deep-drawing in particular without subjecting the cover plates to excessive stress. The epoxy resin that is used polymerized exclusively at the enamel baking temperatures, being coherent but not polymerized when the double-layer plate is deformed, while the enamel layer is baked only after the deformed component is lacquered, whereby said baking occurs at a temperature at which polymerization of the epoxy resin of the intermediate layer also occurs.

Claims19

Dependent claims

A process for producing a molded component from a double-layer plate having cover plates and an intermediate layer of an epoxy resin, wherein the cover plates have an inner surface and an outer surface and wherein said epoxy resin forms a hot melt glue adhered to the inner surface of the cover plates comprising:

a) introducing said epoxy resin prior to its polymerization between said inner surface of the cover plates, said epoxy resin polymerizing only at an enamel baking temperature;
and
spatially fixing said cover plates in relation to one another;
b) molding said double-layer plate into a desired shape for said molded component;
c) applying an enameled covering to the outer surfaces of said cover plates;
d) baking said double layer-plate at an enamel baking temperature, whereby said enamel covering is baked and said epoxy resin is polymerized simultaneously;
e) wherein the cover plates comprise a knobbed plate and a flat plate, and wherein the knobbed plate is welded by its knobs to the flat plate.

4 more elements

Dependencies are inferred from the claim text.