Title:
SEALANT FILM, LAMINATED FILM, AND PACKAGING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/059493
Kind Code:
A1
Abstract:
A sealant film composed of superposed layers comprising a surface resin layer (A), a tacky resin layer (B), a release resin layer (C), and a heat-sealable resin layer (D), characterized in that the tacky resin layer (B) comprises a thermoplastic elastomer (b1) and a tackifier resin (b2), the release resin layer (C) comprises resinous components including specific amounts of an ethylene-based ionomer (c1) having a polar group concentration exceeding 5.5 mol% and an ethylene-based ionomer (c2) having a polar group concentration of 5.5 mol% or less, and the heat-sealable resin layer (D) comprises resinous components including specific amounts of an olefin-based resin (d1) and a thermoplastic elastomer (d2).
Inventors:
TOKIEDA DAIKI (JP)
MORIYA TAKASHI (JP)
MORIYA TAKASHI (JP)
Application Number:
PCT/JP2021/032220
Publication Date:
March 24, 2022
Filing Date:
September 02, 2021
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
B32B27/32; B32B25/08; B65D65/40
Foreign References:
| US5882749A | 1999-03-16 | |||
| JP2008200960A | 2008-09-04 | |||
| JP2015071290A | 2015-04-16 | |||
| JP2020015546A | 2020-01-30 |
Attorney, Agent or Firm:
OGAWA Shinji (JP)
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