| http://www.w3.org/ns/prov#value | - The present invention may be used for the quenching of any thermoplastics material which is capable of being formed into a flat self-supporting film by continuous extrusion and quenching, e.g. polystyrene, polyamides, polymers and copolymers of vinyl chloride, polycarbonate, polymers and copolymers of olefines such as polypropylene, and polyesters of dibasic aromatic carboxylic acids with divalent
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