Abstract: A composite panel from which an internal bathtub casing can be manufactured by deep drawing, in which a coating of poly(methyl methacrylate) (PMMA, acrylic glass) is placed on a substrate of acrylonitrile-butadiene-styrene (ABS) in particular, which coating is provided with a top coat which consists of 30-70 weight % polyvinylidene fluoride (PVDF), and the remainder of poly(methyl methacrylate).

Abstract: An insulating wall for refrigerator devices, wherein a polyurethane is foamed between an exterior metal sheet and a deep-drawn plastics material plate selected from a member of the group of polystyrole or acrylonitrile-butadiene-styrene, wherein the cell-gas of the polyurethane foam is carbon dioxide and wherein the plastics material plate comprises in its interior a blocking layer of 0.03-0.6 mm thickness formed of a copolymer of polyethylene and vinyl alcohol where the molar percent of polyethylene in the copolymer is in the range of 32-44.

Abstract: A device to produce material webs of thermoplastic plastics, independently of the thickness at least between 100 .mu.m and 12 mm includes a single apparatus comprising cooled calender rolls mounted on a respective bottom frame and a top frame. The top frame is adjustable relative to the bottom frame between two operating positions. Of a feed roll pair, preferably directly following a sheet die, one of two feed rolls is arranged in the bottom frame and the other in the top frame. Thereby, in one operating position, the upper feed roll, and in the other operating position a smoothing ledge is associated with the feed roll of the bottom frame. The smoothing ledge is provided at the top frame and preferably has an air outlet nozzle. The top frame is preferably arranged with a slide which is displaceable in a slideway of the bottom frame.