Title:
SHEET MANUFACTURING METHOD, POLYOLEFIN MICROPOROUS FILM MANUFACTURING METHOD, KNEADING MEASUREMENT DEVICE, AND DISCHARGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/137530
Kind Code:
A1
Abstract:
The present invention pertains to a sheet manufacturing method involving transporting a fluidized resin by means of a plurality of gear pumps connected in series and molding, into a sheet shape, the transported fluidized resin by a ferrule. In the sheet manufacturing method, the most downstream-side gear pump among the plurality of gear pumps is operated so that the volumetric efficiency is at least 90.0%, the gear pumps other than the most downstream-side gear pump is operated so that the volumetric efficiency is no smaller than 50.0% and smaller than 90.0%, and the pressure differences between the plurality of gear pumps is no greater than 7.0 MPa.
More Like This:
Inventors:
YOSHIDA TAKASHI (JP)
Application Number:
PCT/JP2019/048359
Publication Date:
July 02, 2020
Filing Date:
December 10, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29C55/12; B29C48/08; B29C48/29; B29C48/305; B29C48/37; B29C48/40; B29C48/92; B29C67/20; C08J9/28
Domestic Patent References:
| WO2016125526A1 | 2016-08-11 |
Foreign References:
| JP2003062891A | 2003-03-05 | |||
| JP2003001696A | 2003-01-08 | |||
| JP2018196939A | 2018-12-13 | |||
| JP2017035789A | 2017-02-16 | |||
| JPH07290557A | 1995-11-07 | |||
| JP2017035789A | 2017-02-16 | |||
| JP2018242910A | 2018-12-26 | |||
| JP2019177537A | 2019-10-17 | |||
| JP2019204002A | 2019-11-28 |
Other References:
See also references of EP 3831573A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
Download PDF: