SEALANT FILM, LAMINATED FILM, AND PACKAGING MATERIAL

Title:

SEALANT FILM, LAMINATED FILM, AND PACKAGING MATERIAL

Document Type and Number:

WIPO Patent Application WO/2024/034410

Kind Code:

A1

Abstract:

The present invention provides: a sealant film comprising a surface layer (A), an adhesive layer (B), and a seal layer (C), wherein the adhesive layer (B) contains a styrene-based elastomer (b1) and a tackifier (b2), the content of the styrene-based elastomer (b1) relative to resin components constituting the adhesive layer (B) is at least 25 mass%, and the absolute value of the difference in surface free energy between the adhesive layer (B) and the seal layer (C) is at least 8.0 mJ/m2; a laminated film using the sealant film; and a packaging material comprising the laminated film and an adherend having an outermost surface mainly composed of a polyester resin.

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Inventors:

TOMIYA DAIKI (JP)
KABURAGI YUUKI (JP)
MORIYA TAKASHI (JP)

Application Number:

PCT/JP2023/027480

Publication Date:

February 15, 2024

Filing Date:

July 27, 2023

Export Citation:

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Assignee:

DAINIPPON INK & CHEMICALS (JP)

International Classes:

B32B27/30; B32B25/08; B32B27/32; B65D65/40

Domestic Patent References:

WO2017170452A1

2017-10-05

Foreign References:

JP2004058568A	2004-02-26
JP2005119075A	2005-05-12
JP2009241477A	2009-10-22

Attorney, Agent or Firm:

ONO Takayuki (JP)

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