Title:
METHOD FOR MANUFACTURING MICROPOROUS POLYOLEFIN RESIN SHEET AND DEVICE FOR MANUFACTURING MICROPOROUS POLYOLEFIN RESIN SHEET
Document Type and Number:
WIPO Patent Application WO/2022/168546
Kind Code:
A1
Abstract:
The present invention provides a method and a device for manufacturing a microporous polyolefin resin sheet with which it is possible to manufacture a high-quality sheet in a stable manner. This method for manufacturing a microporous polyolefin resin sheet is a method for manufacturing a sheet in which a sheet material containing a polyolefin resin and a diluent is discharged from a discharge port of a mouthpiece towards a cast device, and in a decompression chamber, the space between the sheet material and the cast device is covered, air is suctioned, and the sheet material is brought into intimate contact with the cast device. The suctioning of the air in the decompression chamber is performed from exhaust nozzles disposed on the outer side relative to the two width-direction edge sides of the sheet material so that opening parts face each other; and the relationships Y1/H ≤ 0.13 and 0.25 ≤ Y2/H ≤ 0.75 are satisfied, where H represents the shortest distance from the discharge port of the mouthpiece to the outer peripheral surface of the cast device, Y1 represents the shortest distance from the upper edge side of the opening parts to an edge part of the sheet material, and Y2 represents the shortest distance from the lower edge of the opening parts to an edge part of the sheet material.
Inventors:
YOSHIKAWA TOSHIKI (JP)
INOMOTO TAKESHI (JP)
INOMOTO TAKESHI (JP)
Application Number:
PCT/JP2022/000740
Publication Date:
August 11, 2022
Filing Date:
January 12, 2022
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29C48/305; B29C48/88; B29C67/20; C08J9/28; B29K23/00; B29K105/04; B29L7/00
Domestic Patent References:
| WO2016125526A1 | 2016-08-11 | |||
| WO2016125527A1 | 2016-08-11 | |||
| WO2016125528A1 | 2016-08-11 |
Foreign References:
| JPH10180847A | 1998-07-07 | |||
| JP2020037235A | 2020-03-12 | |||
| JP2021017058A | 2021-02-15 | |||
| JPH10180847A | 1998-07-07 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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