Title:
METHOD FOR PRODUCING PLASTIC BAG
Document Type and Number:
WIPO Patent Application WO/2019/123876
Kind Code:
A1
Abstract:
This plastic bag is provided with a seal region. The seal region comprises a portion in which at least two plastic films are sealed to each other, and is formed along part or all of the edge of the plastic bag. The edge of the plastic bag includes the seal region and a seal edge part. This production method includes a step for heat-sealing films to form a seal region. The production method also includes a step for cutting the films and forming part or all of a seal edge part of the seal region from a cutting edge. The production method furthermore includes a step for heating a location that comprises the cutting edge of the seal edge part to perform smoothing.
Inventors:
TOTANI MIKIO (JP)
Application Number:
PCT/JP2018/041445
Publication Date:
June 27, 2019
Filing Date:
November 08, 2018
Export Citation:
Assignee:
TOTANI CORP (JP)
International Classes:
B31B70/64; B31B70/16
Foreign References:
| JP2000117854A | 2000-04-25 | |||
| JP2000128189A | 2000-05-09 | |||
| JP2006076048A | 2006-03-23 | |||
| JP2011020719A | 2011-02-03 | |||
| JPH01320708A | 1989-12-26 | |||
| JP3733085B2 | 2006-01-11 |
Other References:
See also references of EP 3730282A4
Attorney, Agent or Firm:
MINORI PATENT PROFESSION CORPORATION (JP)
Download PDF: