Foamed resin molded product, foamed insulated wire, cable and method of manufacturing foamed resin molded product

摘要

A foamed resin molded product includes not less than two fluorine resins that have a different melting point from each other. One of the not less than two fluorine resins comprises a fluorine resin that has a melting point of not more than 230 degrees C. An other of the not less than two fluorine resins comprises a fluorine resin that has a melting point of not less than 40 degrees C. higher than the fluorine resin having the melting point of not more than 230 degrees C.

主权项

1. A foamed resin molded product, comprising:
not less than two fluorine resins that have a different melting point from each other, wherein one of the not less than two fluorine resins comprises a fluorine resin that has a melting point of not more than 230 degrees C., wherein an other of the not less than two fluorine resins comprises a fluorine resin that has a melting point of not less than 40 degrees C. higher than the fluorine resin having the melting point of not more than 230 degrees C., and wherein the foamed resin molded product is obtained by mixing and foaming a master batch comprising the fluorine resin that has the melting point of not more than 230 degrees C. and a chemical foaming agent, and a base resin comprising at least the fluorine resin that has the melting point of being not less than 40 degrees C. higher than the fluorine resin having the melting point of not more than 230 degrees C. by an extrusion molding method, wherein the fluorine resin having the melting point of not more than 230 degrees C. comprises an ethylene-tetrafluoroethylene-hexafluoropropylene copolymer (EFEP), and wherein the fluorine resin having the melting point of not less than 40 degrees C. higher than the fluorine resin having the melting point of not more than 230 degrees C. comprises a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) or a tetrafluoroethylene-hexafluoropropylene copolymer (FEP).