Title:
LAYERED BODY AND METHOD FOR MANUFACTURING SAME, POUCH WITH SPOUT AND METHOD FOR MANUFACTURING SAME, PACKAGING MATERIAL, PACKAGING BAG, AND PACKAGE
Document Type and Number:
WIPO Patent Application WO/2022/138379
Kind Code:
A1
Abstract:
Provided is a layered body 300 comprising a substrate film 10, an adhesive layer 30, and a sealant film 20 in that order, and comprising a printed surface 52 where an electrostatic ink composition adheres to the adhesive layer 30, wherein: the adhesive layer 30 is formed from at least an adhesive composition that includes a polyol, polyisocyanate, and an epoxy compound, or a cured product of the adhesive composition; and the color difference (ΔE), which is determined by formula (A), between before and after heating and compression of the sealant film 20 above the printed surface 52, under prescribed heat sealing conditions, is less than 3.0. In formula (A), ΔL* represents the brightness difference between before and after heating and compression under the heat sealing conditions, and Δa* and Δb* represent the tint difference and saturation difference between before and after heating and compression under the heat sealing conditions.
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Inventors:
YAMAGUCHI KEISUKE (JP)
OKADA KAZUYOSHI (JP)
FUNAKOSHI KOTA (JP)
HORIUCHI MASAFUMI (JP)
OKADA KAZUYOSHI (JP)
FUNAKOSHI KOTA (JP)
HORIUCHI MASAFUMI (JP)
Application Number:
PCT/JP2021/046294
Publication Date:
June 30, 2022
Filing Date:
December 15, 2021
Export Citation:
Assignee:
TOPPAN INC (JP)
International Classes:
B32B27/00; B32B7/12; B32B27/38; B32B27/40; B65D30/02; B65D33/00; B65D33/38; B65D65/40; C09D11/30
Domestic Patent References:
| WO2021024981A1 | 2021-02-11 |
Foreign References:
| JP2018530478A | 2018-10-18 | |||
| JP2015157363A | 2015-09-03 | |||
| JP2017109752A | 2017-06-22 | |||
| JP2003113359A | 2003-04-18 | |||
| JP2017043693A | 2017-03-02 | |||
| JPH0711225A | 1995-01-13 | |||
| JPH09314723A | 1997-12-09 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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