Title:
METHOD FOR MANUFACTURING FLUORORESIN
Document Type and Number:
WIPO Patent Application WO/2017/209133
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method for manufacturing a fluororesin in which contained low boiling components have been adequately reduced. Provided is a method for manufacturing a fluororesin in which low boiling components have been reduced by melting and kneading a melt-formable fluororesin with a twin screw extruder 10, wherein: the twin screw extruder 10 has at least one melting zone; the set temperature for a first melting zone Z1, which is the most upstream of the melting zones, is the fluororesin melting point + 25-100°C; the degree of vacuum at the vent port of a vacuum vent 14 is −0.07 MPa [gage] or less; and the melt volume flow rate α2 (g/10 min) for the fluororesin at a specified temperature and load after melting and kneading satisfies α1 <α2 ≤ α1 + 14 with respect to the melt volume flow rate α1 (g/10 min) for the fluororesin at the same temperature and same load before the melting and kneading.
Inventors:
ABE MASATOSHI (JP)
SATO TAKASHI (JP)
HOSODA TOMOYA (JP)
NAKAO TAKUYA (JP)
SATO TAKASHI (JP)
HOSODA TOMOYA (JP)
NAKAO TAKUYA (JP)
Application Number:
PCT/JP2017/020126
Publication Date:
December 07, 2017
Filing Date:
May 30, 2017
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
B29B7/46; B29C48/405; B29C48/154; C08F6/00; C08F210/02; C08F214/26; B29C48/05; B29C48/345; B29C48/625; B29C48/92; B29K27/12; B29L7/00
Domestic Patent References:
| WO2009014138A1 | 2009-01-29 | |||
| WO2008143069A1 | 2008-11-27 |
Foreign References:
| JP2009095978A | 2009-05-07 |
Attorney, Agent or Firm:
SENMYO Kenji et al. (JP)
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