Toppan Printing Co., Ltd.

Tomokazu Murase

Ryukichi Matsuo

Junpei Hayashi

Shigekazu Yasutake

Hiroshi Miyazaki

Toshiya Ishii

Miki Fukugami

Noritada Nakanishi

A method of producing a gas barrier laminate of the present disclosure includes a step of forming a coating film on a surface of a base film or a laminate including the base film, the coating film containing zinc ions, at least one of metal alkoxide and a hydrolysate thereof, and an aqueous polymer, and a step of drying the coating film to form a gas barrier layer on the surface of the base film or the laminate including the base film. A gas barrier laminate of the present disclosure includes a base film or a laminate including the base film, and a gas barrier layer provided on a surface of the base film or the laminate including the base film. In the gas barrier laminate, the gas barrier layer contains zinc dispersed in the gas barrier layer and an organic-inorganic composite.

Gas barrier laminate and method of producing the same

The present disclosure relates to a laminate film for packaging. A laminate film according to an aspect of the present disclosure includes: a resin substrate having a heat sealing surface that constitutes one outermost surface of the laminate film; a coating layer made of a non-metallic material; and an underlayer disposed between the resin substrate and the coating layer. The resin substrate includes a first layer that is made of olefin copolymer and constitutes the heat sealing surface, and a second layer made of polypropylene, and the first and second layers are laminated and biaxially stretched.

Laminate film and packaging bag

A laminated film including a resin substrate, and a coating layer on the resin substrate. The coating layer contains a water-soluble polymer, at least one of a silane coupling agent and a hydrolysate thereof, at least one of a metal alkoxide and a hydrolysate thereof, and an inorganic layered compound.

Laminated film and packaging bag

A laminate prepared by pretreating at least one side of a substrate of a plastic film by plasma treatment and then directly laminating a thermoplastic resin on a surface treated by pretreatment.

Growing community of inventors

Tokyo, Japan

Tomokazu Murase