| 摘要 |
A product made of synthetic plastic material composed of a thermoplastic polymer resin including at least one polymer or copolymer or a mixture of polymers or copolymers, and an inert filler dispersed uniformly in the resin, wherein the material is a foam material including a number of open or closed cells distributed substantially uniformly, and wherein the resin is cross-linked three-dimensionally. A resin, selected from the group including polyolefin and polystyrene resins and mixtures thereof, is mixed with a natural or synthetic inert filler, such as calcium carbonate, barium sulfate, etc., and with appropriate additives, is injection molded or extruded after adding chemical or physical foaming agents (inert gases), and is cross-linked, wholly or in part, by adding chemical cross-linking agents or by radiation by an electron beam. |
