Sumitomo Chemical Company, Limited

Kura Industrial Company, Limited

Tadatoshi Ogawa

Teruaki Yoshida

Shuji Kitamura

Kiyohiko Nakae

Taiichi Sakaya

Ryuma Kuroda

Hajime Sadatoshi

Seiichiro Ima

Kazuki Wakamatsu

Masahiro Kakugo

Kozo Kotani

Takeshi Yamada

Kazuo Kondo

Takanori Kume

Haruo Hayashida

Hideaki Yamada

Satoru Hosoda

Nobuo Fukushima

Teruo Tada

Toyoki Wano

Susumu Kojimoto

Akihiro Ichige

Masaaki Zenigame

Youzou Abe

Hidekazu Hosono

A resin composition comprising 2 to 30 wt. parts of polyaminoamide and 98 to 70 wt. parts of a saponified ethylene-vinyl ester copolymer which comprises 20 to 60% of ethylene units based on the whole monomeric units and has a saponification degree for the vinyl ester units of at least 90%, and a shaped article comprising this resin composition.

Resin composition and shaped article having a layer comprising the same

A resin composition comprising 100 parts by weight of an aggregated inorganic layer compound and 200-10,000 parts by weight of a resin, the particle size of the aggregated inorganic layer compound satisfying the mathematical expressions (1):

Gas barrier resin composition and process for producing the same

An oxygen absorber comprising an active carbon material layer and an oxygen absorbing layer comprising 15-80% by weight of a thermoplastic resin and 85-20% by weight of an oxygen absorbing agent, wherein the amount of the active carbon material is 0.2-15% by weight based on the oxygen absorbing agent. The oxygen absorber is easy to handle and excellent in oxygen absorbing performance, and does not deteriorate the flavor of foods and the like.

Oxygen absorber

A wrapping multilayer film comprising at least 5 layers of (A) both the outermost layers each comprising an ethylene-.alpha.-olefin copolymer having an ethylene content of at least 50 mol %, (B) layers each comprising a propylene polymer and being disposed between the outermost layers (A), and (C) a layer comprising recycled resins and being disposed between the layers (B).

Wrapping multilayer film

The polypropylene stretched film of the present invention is prepared by stretching a composition comprising a crystalline propylene polymer and 0.1 ppm by weight to 10% by weight of a nucleating agent, the composition having a melting point of 160.degree. C. or more, a crystallization temperature of 128.degree. C. or more and a 20.degree. C. xylene soluble portion of 3.0% by weight or less. The film has a high rigidity and a beautiful appearance as well as the characteristic properties inherent to crystalline propylene polymers. The film can be suitably used for food packaging and textile packaging.

Polypropylene stretched film

The overlay film of the invention is obtained by forming a substrate layer composed of a resin composition comprising an ethylene copolymer such as ethylene-methacrylic acid ester copolymer and the like and a crystalline polyolefin having a melting point of 110.degree. C. or higher on at least one side of the base layer composed of a crystalline polyolefin and the like by any method such as co-extrusion-laminating and the like followed by cooling. The overlay film is excellent in physical properties such as the anti-blocking property and the like and gives a metal-deposited film with brilliant appearance exhibiting high adhesive strength to the metal layer by vapor-deposition treatment. The metal-deposited film is serviceable for extensive uses including wrapping materials.

Overlay films

A multi-layer shrink film obtained by forming an assembly which comprises an interlayer comprising a flexible propylene resin having a Vicat softening point of 115.degree. C. or less and/or a linear very low-density polyethylene having a density less than 0.91 g/cm.sup.3 sandwiched between outermost layers comprising a propylene resin having a Vicat softening point higher than that of the flexible propylene resin of interlayer and within the range of 80.degree.-150.degree. C. followed by stretching said assembly is disclosed. The film obtained according to the present invention is well suited for a multi-layer shring packaging film and the like.

Multi-layer shrink film

A polypropylene multi-layer film which comprises a crystalline polypropylene substrate layer having laminated to at least one side thereof a sheet of a resin composition comprising:

Polypropylene multi-layer film

Foamed particles of propylene-type polymer of substantially non-crosslinked type, wherein the propylene-type polymer particles have a Melt Index of from 0.1 to 20, said polymer is at least one member selected from the group consisting of:

Foamed particles of propylene-type polymer

A packaging transparent propylene copolymer film stretched in at least one direction, which consists of a copolymer of propylene and an .alpha.-olefin having 4 or more carbon atoms or a copolymer of propylene, an .alpha.-olefin having 4 or more carbon atoms and ethylene. The copolymer satisfies the following conditions;

Packaging propylene copolymer film

A laminated polypropylene film consisting of a crystalline polypropylene layer having laminated to at least one side thereof a copolymer layer, said copolymer being a random copolymer of propylene and an .alpha.-olefin having 4 or more carbon atoms or a random copolymer of propylene, an .alpha.-olefin having 4 or more carbon atoms and ethylene obtained by vapor phase polymerization in the substantial absence of a liquid medium and satisfying the following conditions (1) to (4):

Laminated polypropylene film

A packaging shrink film consisting essentially of a random copolymer of propylene and an .alpha.-olefin having 4 or more carbon atoms or a random copolymer of propylene, an .alpha.-olefin having 4 or more carbon atoms and ethylene, said random copolymer satisfying the following conditions:

Packaging shrink film

An ethylene-.alpha.-olefin copolymer composition comprising two ethylene-.alpha.-olefin copolymers which are different in density, intrinsic viscosity and the number of short chain branching per 1000 carbon atoms. Extrusion processed materials, injection molded materials and films obtained from said composition are excellent in strength.

Low density copolymer composition of two ethylene-.alpha.-olefin

An improved thermoforming process for the production of formed articles of corrugated plastic board having small radius curvatures and deep drawings, which comprises heating said corrugated plastic board at the portions to be formed into small radius curvatures or deep drawings more intensively than at the other portions, and applying pressure to said portions thereby crushing the rib structure in said portions without crushing the rib structure in said other portions.

Growing community of inventors

Toyonaka, Japan

Tadatoshi Ogawa