Title:
METHOD AND DEVICE FOR DIVIDING SHEET MATERIAL
Document Type and Number:
WIPO Patent Application WO/2024/004545
Kind Code:
A1
Abstract:
A method for dividing a sheet material, the method comprising: a preparation step for preparing a soft sheet material 11 having a brittle material layer 2 in which a brittle line 4 extending in a first direction is formed; an arrangement step for causing a surrounding region 11C of the brittle line 4 of the sheet material 11 to bend into a recessed arc shape in a lateral view, and arranging a tip portion 81 of a division assist instrument 8 in a recess of the surrounding region 11C having the recessed arc shape; and a division step for returning the surrounding region 11C having the recessed arc shape toward the tip portion 81 of the division assist instrument 8 by applying a tensile force to the surrounding region 11C in a second direction perpendicular to the first direction, and thereby, dividing the sheet material 11 along the brittle line 4.
Inventors:
SHINOZAKI TAKAHIRO (JP)
KANNO TOSHIHIRO (JP)
YANO TAKANOBU (JP)
KANNO TOSHIHIRO (JP)
YANO TAKANOBU (JP)
Application Number:
PCT/JP2023/020966
Publication Date:
January 04, 2024
Filing Date:
June 06, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C03B33/033; B26F3/00; B28D5/00; B28D7/04
Domestic Patent References:
| WO2006073098A1 | 2006-07-13 | |||
| WO2015004835A1 | 2015-01-15 |
Foreign References:
| JP2008088012A | 2008-04-17 | |||
| JP2012201573A | 2012-10-22 | |||
| JP2015223818A | 2015-12-14 |
Attorney, Agent or Firm:
MAKOTO INTERNATIONAL PATENT ATTORNEYS OFFICE (JP)
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