Title:
LAMINATE, PACKAGING MATERIAL, AND FOOD PACKAGING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/132683
Kind Code:
A1
Abstract:
Provided is a laminate for which the time required for delamination is shortened and which has excellent recoverability. The laminate has an outer layer 1, an intermediate layer, and an outer layer 2, wherein: the outer layer 1, the intermediate layer, and the second outer layer 2 are arranged in this order; the intermediate layer contains a polyvinyl alcohol-based resin; the difference between the water vapor permeability of the outer layer 1 and the water vapor permeability of the outer layer 2 is at least 100 cc·30 μm/m2·day; and the water vapor permeability of the outer layer 1 and the water vapor permeability of the outer layer 2 satisfy the following expression (1). Water vapor permeability of outer layer 1 < Water vapor permeability of outer layer 2…(1)
Inventors:
NAKAI MASAYA (JP)
KATO KUNIYASU (JP)
KATO KUNIYASU (JP)
Application Number:
PCT/JP2020/049019
Publication Date:
July 01, 2021
Filing Date:
December 25, 2020
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
B32B27/30; B32B7/02; B65D65/40; B65D85/50
Foreign References:
| JP2006124669A | 2006-05-18 | |||
| JP2019182463A | 2019-10-24 | |||
| JPH0429845A | 1992-01-31 | |||
| JPH07186337A | 1995-07-25 | |||
| JPH04115927A | 1992-04-16 | |||
| JP2014172632A | 2014-09-22 | |||
| JP2008012764A | 2008-01-24 | |||
| JPH06198821A | 1994-07-19 | |||
| JPS5198783A | 1976-08-31 | |||
| JPH01225550A | 1989-09-08 | |||
| JP2002284818A | 2002-10-03 | |||
| JP2004285143A | 2004-10-14 | |||
| JP2006095825A | 2006-04-13 |
Other References:
ASAHI KASEI AMIDAS CORP. ET AL.: "PLASTIC DATA BOOK", 1 December 1999, KŌGYŌ CHŌSA-KAI [INDUSTRIAL RESEARCH COMMITTEE], JP, ISBN: 4-7693-4128-8, article ASAHI KASEI AMIDAS: "Film thickness dependence of water vapor transmission rate", pages: 38 - 41, XP009529646
See also references of EP 4082786A4
See also references of EP 4082786A4
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
Download PDF: