Molded object process for producing the same product for high-frequency signal transmission and high-frequency transmission cable

A method of producing a molded article comprising:

• subjecting a resin composition comprising a polytetrafluoroethylene resin (A) and a thermoplastic resin (B) having a melting point of not lower than 100° C. but lower than 322° C. in an amount of 1 to 60% by mass of the sum of the polytetrafluoroethylene resin (A) and said thermoplastic resin (B) to heat treatment during an extrusion coating molding technique or wrapping technique at a specific resin temperature,
• wherein said specific resin temperature is not lower than the melting point of said thermoplastic resin (B) but lower than the melting point of said polytetrafluoroethylene resin (A).

A molded article formed by molding a mixture comprising fluoropolymers having different melting points, wherein said mixture comprises (A) about 70-95 wt % of polytetrafluoroethylene having a melting point of 340+7° C., and (B) about 30-5 wt % of lower melting fluoropolymer having a melting point of not lower than 100° C. but lower than 322° C. which is a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer or tetrafluoroethylene/hexafluoropropylene copolymer, to total 100 wt %.

A molded article comprising:

• a polytetrafluoroethylene resin (A) which is a homopolymer of tetrafluoroethylene or a copolymer of tetrafluoroethylene and less than 1 mole percent of hexafluoropropylene and which has a first melting point of 340+7° C.;
• and
• a thermoplastic resin (B) which is a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer or tetrafluoroethylene/hexafluoropropylene copolymer, having a melting point of not lower than 100° C. but lower than 322° C.