Patent ID: 8221662

Claim:
A process for producing an injection molding having a stiff plastics layer and a foamed-plastic surface layer, the process comprising: providing an injection mold having at least one undercut region and having two mold halves and having one or more sliding elements, which delimit a mold cavity with a convex and a concave side; configuring a first sliding element provided on a convex side of the mold cavity so as to interlock with the first mold half more distant from the undercut region and is displaced with this same mold half in a same direction after an injection of the stiff plastics backing layer and of a polymer melt forming the foamed-plastic surface layer; and decompressing the polymer melt forming the foamed-plastic surface layer such that a height of the mold cavity is reduced in the undercut region and increased elsewhere where the polymer melt forming the foamed-plastic surface layer is compressed in the undercut region and expanded elsewhere in the mold cavity.