Process for the production of material having at least two layers

A process for the production of articles having at least one surface defined by at least one layer of a flexible material and a layer of a synthetic resin joined to that layer, comprising introducing into a mold cavity a cut-to-size piece of said flexible material in the form of a layer of flat material, drawing said flat material against a side wall of the mold cavity by vacuum, said side wall of the mold cavity having a non-planar configuration, whereby said flexible material acquires said non-planar configuration, the piece of flexible material having edges beyond the surface thereof that is in contact with said non-planar mold cavity wall, said edges and the side of the material opposite said surface being exposed within the mold cavity, and introducing synthetic resin into the mold cavity until the cavity is full, the synthetic resin in the cavity covering and bonding to said opposite side of said material and to said edges beyond said surface, whereby said surface extends flush with the outer surface of the synthetic resin in the region of the edges of said surface of the cut-to-size material.