METHOD FOR PRODUCING OF POLYTETRAFLUOROETHYLENE PARTICLE AGGREGATE AND METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE MOLDED ARTICLE

摘要

Provided is a method for producing a polyterafluoroethylene (PTFE) molded article which exhibits superior productivity and provides higher latitude with respect to the shape of a finished molded article, as compared to a conventional method for producing a PTFE molded article. Also provided is a method for producing a PTFE particle aggregate which is produced as an intermediate product in the production of the PTFE molded article. A method for producing a PTFE particle aggregate which comprises applying, to a PTFE particle dispersion comprising PTFE particles, a surfactant and water as a dispersant, a force for bringing PTFE particles closer together or a force for bringing PTFE particles to contact with one another to thereby form a PTFE particle aggregate having water and the surfactant included therein. This method can be practiced, for example, in a chamber (1) as shown in Fig. 1.