| http://www.w3.org/ns/prov#value | - Before kneading in a multi-screw extruder, the terpolymer and PTFE are preferably pre-mixed, thereby further improving the degree of dispersion of PTFE. The powder mixer used for pre-mixing is not particularly limited and examples are a mixer, a mixing roll, a kneader, a ball mill, a banbury mixer and a blender.
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