| abstract |
An object of the present invention is to provide a fluororesin composition, powder, pellets, covered electric wire, which realizes improvement of formability in melt extrusion molding, particularly significant reduction in molding defects during high-speed molding in electric wire extrusion coating molding, And it is providing the manufacturing method of a foamed electric wire. In the method for producing a fluororesin composition of the present invention, when a copolymer is obtained by polymerizing at least tetrafluoroethylene and hexafluoropropylene in the same system, the copolymer produced during polymerization is obtained. It has a polymerization step of changing the melt flow rate at 372 ° C. from 0.05 to 5.0 g / 10 min to 10 to 60 g / 10 min. [Selection] Figure 1 |