Title:
MULTILAYER STRUCTURE AND STAND-UP POUCH COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2020/196184
Kind Code:
A1
Abstract:
The present invention provides a multilayer structure described below, which enables the achievement of a stand-up pouch that has a good balance between low water vapor transmission rate and sufficient heat seal strength, while being suppressed in the change ratio of gas barrier properties after retort processing. A multilayer structure (10) which is characterized by comprising a protective layer (1), an ethylene-vinyl alcohol copolymer layer (2b) and a heat seal resin layer (3b), while having an intermediate layer (3a) that contains a polypropylene resin between the ethylene-vinyl alcohol copolymer layer (2b) and the heat seal resin layer (3b), and which is also characterized in that the intermediate layer (3a) additionally contains a hydrocarbon resin that has a number average molecular weight of 100-3,000 and a softening point of 60°C or more but less than 170°C.
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Inventors:
OURA KOHEI (JP)
NAKANISHI SHINJI (JP)
TAKATSUKA MEI (JP)
MATSUMURA YOSHITAKA (JP)
NAKANISHI SHINJI (JP)
TAKATSUKA MEI (JP)
MATSUMURA YOSHITAKA (JP)
Application Number:
PCT/JP2020/012090
Publication Date:
October 01, 2020
Filing Date:
March 18, 2020
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
B32B27/28; B32B27/32; B32B27/34; B65D30/16; B65D65/40
Foreign References:
| JPH06198826A | 1994-07-19 | |||
| JP2004243562A | 2004-09-02 | |||
| JP2016203634A | 2016-12-08 | |||
| JP2009102651A | 2009-05-14 | |||
| JPH1025349A | 1998-01-27 | |||
| JPH07179625A | 1995-07-18 | |||
| JPH03178435A | 1991-08-02 | |||
| JPH0376646A | 1991-04-02 | |||
| JP2019177909A | 2019-10-17 |
Other References:
See also references of EP 3943297A4
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
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