Title:
MULTILAYER FILM AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/120577
Kind Code:
A1
Abstract:
The present invention provides a gas barrier film which has excellent gas barrier properties and excellent interlaminar adhesion. The present invention produces a multilayer film which comprises: a base material layer that contains an olefin resin; an intermediate layer that is superposed on at least one surface of the base material layer, and contains a water-soluble vinyl polymer and a polyalkyleneimine resin, with the ratio of a layered inorganic compound being 0 to 15 parts by mass relative to 100 parts by mass of the water-soluble vinyl polymer; and an inorganic layer that is superposed on the intermediate layer. The olefin resin may be a polypropylene resin. The base material layer may be a stretched film. The inorganic layer may contain a metal. The inorganic layer may be at least one film that is selected from the group consisting of an aluminum vapor deposition film, an alumina vapor deposition film and a silica vapor deposition film. The intermediate layer may not contain a layered inorganic compound. The ratio of the polyalkyleneimine resin may be 1 to 50 parts by mass relative to 100 parts by mass of the water-soluble vinyl polymer.
Inventors:
SAIO TAKASHI (JP)
SAKAGUCHI TAKATOSHI (JP)
SAKAGUCHI TAKATOSHI (JP)
Application Number:
PCT/JP2022/047114
Publication Date:
June 29, 2023
Filing Date:
December 21, 2022
Export Citation:
Assignee:
DAICEL MIRAIZU LTD (JP)
International Classes:
B32B9/00; B32B15/082; B32B27/20; B65D65/40
Foreign References:
| JPH08245816A | 1996-09-24 | |||
| JP2000063610A | 2000-02-29 | |||
| JP2019081326A | 2019-05-30 | |||
| JP2013082910A | 2013-05-09 | |||
| JP2001121658A | 2001-05-08 | |||
| JP2007161795A | 2007-06-28 |
Attorney, Agent or Firm:
SAKANAKA Hiroshi et al. (JP)
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