Title:
THERMALLY SHRINKABLE MULTILAYER FILM AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/210213
Kind Code:
A1
Abstract:
The present invention provides a multilayer film configured from 80 mass% or more of a polyolefin resin, the multilayer film having exceptional mechanical characteristics and thermal shrinkage properties. A thermally shrinkable multilayer film according to the present invention comprising at least three layers, including an outer surface layer (a) containing a polyolefin resin, an intermediate layer (b) containing a gas-barrier resin, and an inner surface layer (c) containing a polyolefin resin, wherein: at least one layer in the multilayer film contains a cyclic olefin copolymer; and the mass ratio of the polyolefin resin to the multilayer film is 80 mass% or greater, and the mass ratio of the cyclic olefin copolymer to the multilayer film is 15 mass% or greater, where 100 mass% represents the total mass of the multilayer film.
Inventors:
NAOHARA RYO (JP)
ITOH TADAYOSHI (JP)
MOCHIMARU TOMOHIDE (JP)
ITOH TADAYOSHI (JP)
MOCHIMARU TOMOHIDE (JP)
Application Number:
PCT/JP2023/011242
Publication Date:
November 02, 2023
Filing Date:
March 22, 2023
Export Citation:
Assignee:
KUREHA CORP (JP)
International Classes:
B32B27/32; B32B27/00; B32B27/28; B65D65/40
Foreign References:
| JP2005313389A | 2005-11-10 | |||
| JP2007160573A | 2007-06-28 | |||
| JP2007160574A | 2007-06-28 | |||
| JP2020026104A | 2020-02-20 | |||
| JP2016182674A | 2016-10-20 | |||
| JP2006272775A | 2006-10-12 | |||
| JP2008062493A | 2008-03-21 | |||
| JP2005201987A | 2005-07-28 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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