Light-shielding barrier laminate

Patent metadata

Field	Value
Publication number	US-2016176166-A1
Application number	US-201414910205-A
Country	US
Kind code	A1
Filing date	Sep 16, 2014
Priority date	Sep 17, 2013
Publication date	Jun 23, 2016
Grant date	—

Abstract

To provide a light-shielding barrier laminate with excellent gas barrier properties and light-shielding properties. A light-shielding barrier laminate comprising a light-shielding sealant film laminated on a transparent gas barrier film, having an inorganic oxide vapor deposition film formed on one side of a transparent resin film, on the side on which the inorganic oxide vapor deposition film has been formed, via an adhesive layer, the light-shielding sealant film being a film having an aluminum vapor deposition film formed on one side of a heat-sealable resin film, the side on which the aluminum vapor deposition film is formed being laminated so as to face the adhesive layer.

First claim

1 . A light-shielding barrier laminate comprising a light-shielding sealant film laminated on a transparent gas barrier film, having an inorganic oxide vapor deposition film formed on one side of a transparent resin film, on the side on which the inorganic oxide vapor deposition film has been formed, via an adhesive layer, the light-shielding sealant film being a film having an aluminum vapor deposition film formed on one side of a heat-sealable resin film, the side on which the aluminum vapor deposition film is formed being laminated so as to face the adhesive layer.

2 . A light-shielding barrier laminate according to claim 1 , wherein the aluminum vapor deposition film is formed by a vacuum vapor deposition method with a resistance heating system.

3 . A light-shielding barrier laminate according to claim 1 , which is for packaging of a powder.

4 . A light-shielding barrier laminate according to claim 1 , wherein the inorganic oxide vapor deposition film is formed by a vacuum vapor deposition method with a resistance heating system.

5 . A light-shielding barrier laminate according to claim 1 , wherein the transparent gas barrier film is a gas-barrier coated film made of a gas barrier composition comprising one or more alkoxides represented by the general formula R 1 nM (OR 2 ) m (where R 1 and R 2 are C1 to 8 organic groups, M is a metal atom, n is an integer of 0 or greater, m is an integer of 1 or greater, and n+m is the valency of M), and either or both a polyvinyl alcohol-based resin or an ethylene-vinyl alcohol copolymer, and obtained by polycondensation by a sol-gel method, further formed on the inorganic oxide vapor deposition film.

6 . A light-shielding barrier laminate according to claim 1 , wherein the inorganic oxide is an aluminum oxide.

7 . A light-shielding barrier laminate according to claim 1 , wherein the heat-sealable resin film is made of two or more olefin-based resin layers.

8 . A light-shielding barrier laminate according to claim 7 , wherein the heat-sealable resin film is made of two or more olefin-based resin layers, at least one of which contains a polypropylene resin.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Matsui Shigeki
• Mikami Koichi

Classifications

• B65D31/02

  with laminated walls · CPC title

• B32B2307/41

  Opaque · CPC title

• B32B2255/20

  Inorganic coating · CPC title

• B32B2307/7242

  Non-permeable · CPC title

• B32B2307/412

  Transparent · CPC title