Title:
LASER-PRINTED PACKAGING BODY
Document Type and Number:
WIPO Patent Application WO/2022/153965
Kind Code:
A1
Abstract:
The present invention provides a laser-printed packaging bag formed from a laminate having exceptional lamination strength and exceptional visibility of a printed part without using a laser-pigment-containing ink, the laser-printed packaging bag being configured from a laminate having at least one laser printing layer that can be printed upon by irradiation with a laser, the laminate being such that a laser-printed portion that is printed upon by a laser and a non-laser-printed portion are present in the laser printing layer, and furthermore having a sealing layer, and the laser-printed packaging bag moreover being such that: the sealing layer is provided at least to the innermost layer; at least parts of the sealing layer on the innermost layer are bonded together; and the difference in color L* value between the laser-printed portion and the non-laser-printed portion, the adhesive strength between the sealing layer parts, and the lamination strength between the laser printing layer and a layer adjacent to the laser printing layer on at least one side are within prescribed ranges.
Inventors:
ISHIMARU SHINTARO (JP)
HARUTA MASAYUKI (JP)
HARUTA MASAYUKI (JP)
Application Number:
PCT/JP2022/000492
Publication Date:
July 21, 2022
Filing Date:
January 11, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B65D65/40; B32B33/00; B41M5/26
Domestic Patent References:
| WO2020071490A1 | 2020-04-09 | |||
| WO2021125135A1 | 2021-06-24 | |||
| WO2021079868A1 | 2021-04-29 |
Foreign References:
| JP2010274530A | 2010-12-09 | |||
| JP2020146963A | 2020-09-17 | |||
| JP2015123616A | 2015-07-06 | |||
| JP2019214392A | 2019-12-19 | |||
| JP6268873B2 | 2018-01-31 |
Other References:
MASAO GOBE, EFFECT OF PIGMENTS ON LAMINATION STRENGTH IN GRAVURE LAMINATING INKS, vol. 64, no. 12, 1991
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