Toyo Seikan Kaisha, Ltd.

Toyo Seikan Group Holdings, Ltd.

Go Saito

Atsushi Kikuchi

Yoshitsugu Maruhashi

Takayuki Ishihara

Toshiki Yamada

Ikuo Komatsu

Kiyoshi Kawaguchi

Makoto Etoh

Yoshihiro Kitano

Yoshihiro Ohta

Hiroaki Goto

Manabu Hosokawa

Yuji Yamaguchi

Kota Mori

Yuuki Tashiro

Yuuji Yamaguchi

Jo Honda

A multilayered container includes at least a polyolefin inner layer; an adhesive layer; a gas-barrier layer; an oxygen-absorbing layer; a gas-barrier layer; an adhesive layer; a polyolefin outer layer, and having at least a body portion and a bottom portion, wherein the gas-barrier layers include an ethylene-vinyl alcohol copolymer, the oxygen-absorbing layer includes an oxygen-absorbing resin composition that contains the ethylene-vinyl alcohol copolymer and an oxidizing organic component, an adsorbing agent is contained on the side inside of said gas-barrier layer, the thickness of the multilayered container at the thinnest portion is not more than 430 &#x3bc;m, and the amount of oxygen absorbed after the heat-sterilization is not less than 23 cc per gram of the oxygen-absorbing resin composition. Despite of this decreased thickness, the multilayered container maintains excellent oxygen-barrier property and property for retaining flavor of the content even when it is subjected to the retort sterilization.

Multilayered container

A high-quality oxygen-absorbing resin composition which is obtained without suffering resin scorching. Also provided are pellets for the oxygen-absorbing resin composition which comprise a thermoplastic resin (A) and an oxidation catalyst. After the pellets are mixed with a trigger resin and a thermoplastic resin (C), the trigger resin functions as a trigger to cause the oxidation of the thermoplastic resins (A) and (C) to proceed. As a result, the resultant composition absorbs oxygen.

Method of making oxygen-absorbing resin composition

Packaging container

A resin composition obtained by blending a thermoplastic resin that can be melt-extruded at a solubility parameter of not smaller than 9.5 with an organic oxidizing component and with a transition metal catalyst, the organic oxidizing component being a polyene having a functional group on a side chain or at a terminal thereof. The resin composition has excellent moldability and gas shut-off property. A multi-layer container having an oxygen-absorbing layer of this resin composition exhibits excellent gas-barrier property and is capable of favorably preserving the content.

Resin composition and multi-layer container using the same

A bottle having substantially no strain due to fluidized orientation in the bottom portion thereof which is homogeneously and uniformly drawn, and, as a result, exhibiting improved shock resistance and buckling strength in the bottom portion, featuring excellent resistance against environmental cracking at the center in the bottom portion, without developing crazing or whitening during the preservation, and offering excellent appearance. The bottle is formed by biaxially stretch-blow-molding a thermoplastic resin, and has a mouth portion, a shoulder portion, a barrel portion and a bottom portion, said bottom portion without being substantially affected by the residual strain due to orientation by fluidization.

Plastic bottle and method of producing the same

A packaging material having an oxygen-absorbing layer of a thermoplastic resin which is blended with an organic oxidizing component and with a transition metal catalyst, wherein the thermoplastic resin is not substantially oxidized in the presence of the transition metal catalyst. The thermoplastic resin is not deteriorated by oxidation and, hence, oxygen-barrier property is not deteriorated, making it possible to stably suppress the permeation of oxygen over extended periods of time.

Packaging material and multi-layer container

Growing community of inventors

Yokohama, Japan

Go Saito