Oji Holdings Corporation

Yuta Shamoto

Yasutomo Noishiki

Masahiro Tsuruhara

Tomofumi Isozaki

Misaki Wakabayashi

Miyoko Tanaka

Moeka Namioka

A barrier laminate which not only achieves both water vapor barrier performance and gas barrier performance at high levels even with a small number of layers (e.g., even with a single barrier layer), but also can reduce the amount of coating and thereby reduce the environmental load. The barrier laminate includes a barrier layer on at least one surface of a paper substrate, and the barrier layer contains a hydroxy polyurethane, a swellable layered silicate, and a cationic resin.

Barrier laminate and packaging bag

An object is to provide heat-sealable paper that is excellent in impact resistance and workability. Provided is heat-sealable paper comprising at least one heat-sealable layer on at least one surface of a paper substrate, wherein in the paper substrate, when a tensile energy absorption in a vertical direction as measured in accordance with JIS P 8113:2006 is defined as X, a tensile energy absorption in a horizontal direction as measured in accordance with JIS P 8113:2006 is defined as Y, a tensile energy absorption index in a vertical direction as measured in accordance with JIS P 8113:2006 is defined as X, and a tensile energy absorption index in a horizontal direction as measured in accordance with JIS P 8113:2006 is defined as Y, a geometric mean of Xand Yis 120 J/mor more, a ratio of Xto Y(X/Y) is 0.5 or more and 2.0 or less, and a geometric mean of Xand Yis 2.0 J/g or more.

Heat-sealable paper and packaging bag

Gas barrier laminate that is simple to produce and has excellent water vapor barrier properties and gas barrier properties. Also a gas barrier laminate further excellent in recyclability and heat sealing properties, and a method for producing it. The gas barrier laminate has a water vapor barrier layer and a gas barrier layer in that order on at least one surface of a paper support, wherein the water vapor barrier layer contains a layered inorganic compound, a cationic resin and an anionic binder, the aspect ratio of the layered inorganic compound is 50 or more, the thickness of the layered inorganic compound is 200 nm or less, the content of the layered inorganic compound is 0.1 to 800 parts by mass relative to 100 parts by mass of the anionic binder, and the gas barrier layer contains a water-soluble polymer. Method for producing the gas barrier material by coating.

Growing community of inventors

Tokyo, Japan

Yuta Shamoto