公开(公告)号：US20190112403A1

公开(公告)日：2019-04-18

申请号：US16200996

申请日：2018-11-27

Applicant: AGC Inc.

Inventor： Masatoshi ABE ,  Takashi SATO ,  Tomoya HOSODA ,  Takuya NAKAO

IPC: C08F214/26 ,  C08J5/18 ,  H01B13/14 ,  H01B3/44

Abstract: A process for producing a fluororesin in which a low-boiling component is reduced, by subjecting a melt-formable fluororesin to melt-kneading treatment by a twin screw extruder 10, wherein the twin screw extruder 10 has at least one melting zone, a set temperature of a most upstream first melting zone Z1 among melting zones is the melting point of the fluororesin +25 to 100° C., a vacuum degree at a vent port of the vacuum vent 14 is at most −0.07 MPa [gage], and a melt mass-flow rate α2 (g/10 min) of the fluororesin after the melt-kneading treatment at a specific temperature under a specific load, to a melt mass-flow rate α1 (g/10 min) of the fluororesin before the melt-kneading treatment at the same temperature under the same specific load satisfy α1