Other

Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha

The Nippon Synthetic Chemical Industry Co., Ltd.

Nippon Gohsei Kagaku Kogyo

Tomoyuki Yamamoto

Kenji Ninomiya

Makoto Kunieda

Koji Izumi

Koji Kita

Masahiko Toyozumi

Hiroki Goan

Motohiro Enokida

A physical properties calculating apparatus accepts inputs of material and thickness of an intermediate layer, accepts inputs of material and thickness of an outer layer, accepts inputs of material and thickness of an inner layer, accepts an input of outside air humidity, accepts an input of inside humidity, accepts an input of outside air temperature, calculates the moisture content of the intermediate layer by activating a sub-routine for calculating the moisture content of the intermediate layer based on the accepted various information and preset information, and calculates physical properties such as oxygen transmission rate of the intermediate layer based on the calculated moisture content of the intermediate layer and the accepted outside air temperature. It is possible to know the physical properties of the intermediate layer that forms a packaging material for packaging products to be packaged, such as foods, without actually measuring the physical properties.

Method for calculating physical properties, physical properties calculating apparatus, and computer program product

A laminate having a layer structure of A/C/B/C/D, which is obtained by coextruding a saponified ethylene-vinyl acetate copolymer (B) and an adhesive resin (C) on one side of a polypropylene film (A) oriented at least uniaxially, to give a laminate having a layer structure of A/C/B/C, stretching this laminate in the transverse direction, and laminating a heat sealing layer (D) on a surface of the adhesive resin (C) of the laminate, and a production method thereof. The laminate of the present invention is superior in gas barrier property, moisture proof, aromatic proof and the like under particularly high humidity, and particularly when formed into a packaging bag, the packing bag shows superior sealing performance and appearance. Hence, the laminate of the present invention is useful for various packaging applications and as a packaging bag and the like for food and pharmaceutical preparations.

Polypropylene EVOH laminate

Hydrous pellets of ethylene-vinyl acetate copolymer hydrolyzate, production thereof and moldings from such hydrous pellets

A purging agent for purging the resin to be purged from an extruder in a melt extrusion apparatus is provided which comprises (A) a hydrophobic thermoplastic resin, (B) a hydrophilic thermoplastic resin and (C) a purging auxiliary selected from the group consisting of (C1) a plasticizer for the resin to be purged, (C2) water and (C3) a crystal water-containing compound, the proportions of the hydrophobic thermoplastic resin (A) and hydrophilic thermoplastic resin (B) being 100/0 to 30/70 by weight and the proportion of the purging auxiliary (C) relative to 100 weight parts of the sum total of the hydrophobic thermoplastic resin (A) plus hydrophilic thermoplastic resin (B) being 0.01 to 40 weight parts.

Purging agent

Growing community of inventors

Ibaraki, Japan

Tomoyuki Yamamoto