Starting material for a flat-domed molded plastic part, in particular a housing part, and molded part created therefrom
In order to reduce the wall thickness of housing parts produced by means of plastic injection molding and equipped with decorative layers, such as battery covers of mobile devices, it is recommended to change to a starting material that is a fiber composite material equipped on one side with the decorative layer, from which starting material the housing part is formed in a deep drawing process. Even if a thick decorative layer the outer surface of which is highly embossed for haptic reasons is applied, the resulting wall thickness remains far below the wall thickness for a housing part that can be produced by means of injection molding. An even further reduction of the wall thickness is achieved if a fiber composite material is used as the deep drawing starting material for the shaped part, the decorative material being directly foamed or injected onto the surface of the fiber composite material.
1. A thin-walled flat-domed molded part, in particular a housing part for mobile electronic appliances, which comprises a blank of a thermoformable web- or sheet-form, sandwich-type multi-ply fiber composite material laminated with a plastics matrix, as a support for a laminated-on decorative layer.
2. The molded part as claimed in claim 1 , wherein the decorative layer is applied to one of the surfaces of the fiber composite material.
3. The molded part as claimed in claim 1 , wherein the decorative layer is adhesively bonded, fused or welded on.
4. The molded part as claimed in claim 1 , wherein the decorative layer is foamed or sprayed on.
5. The molded part as claimed in claim 1 , wherein the decorative layer is applied with interposition of a backing film using adhesive tape.
6. The molded part as claimed in claim 1 , wherein the fiber composite material is laminated on just one side and the decorative layer is applied to the uneven surface, opposite the plastics matrix, of the woven fabric penetrated by matrix material.
7. The molded part as claimed in claim 1 , wherein the outer surface of its decorative layer is coarse grained.
8. The molded part as claimed in claim 1 , characterized by real leather, artificial leather, textiles, wood or metal as the material for the decorative layer.
9. The molded part as claimed in claim 1 , wherein it is the battery cover of a mobile appliance.