Patent ID: 8865839

Claim:
A polytetrafluoroethylene mixture comprising: a modified polytetrafluoroethylene having no history of being heated to a temperature of 300° C. or higher, and having a peak top in the range of from 333° C. to lower than 340° C. in a heat-of-fusion curve which is constructed using a differential scanning calorimeter at a temperature increase rate of 10° C./min; and a fibrillable polytetrafluoroethylene homopolymer having no history of being heated to a temperature of 300° C. or higher, the modified polytetrafluoroethylene having a cylinder extrusion pressure, at a reduction ratio of 1600, of 70 MPa or higher, wherein the mass ratio of the modified polytetrafluoroethylene to the polytetrafluoroethylene homopolymer, that is, modified polytetrafluoroethylene/polytetrafluoroethylene homopolymer, is 10 to 90/90 to 10.