Toyo Seikan Kaisha, Ltd.

Akira Kishimoto

Sadao Hirata

Toru Suzuki

Muneki Yamada

Fumio Kano

Shunsaku Hirata

Jinichi Yazaki

Hiroshi Ueno

Yoshitsugu Maruhashi

Kozaburo Sakano

Syunsaku Hirata

Masanori Aizawa

Shunji Kojima

Shinya Otsuka

Tetsuo Tsukamoto

A molded container having a wall composed of a thermoplastic resin oriented in at least one direction on the wall face, wherein the container wall has a layer of a blend composed mainly of a plurality of melt-extrudable thermoplastic resins, each of which has a solubility parameter (Sp) of at least 9.5, at least one of said thermoplastic resins has an oxygen permeability lower than 5.times.10.sup.-11 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg, said thermoplastic resins are chosen so that the difference (.DELTA.Sp) of the solubility parameter in said thermoplastic resins is not greater than 4.5, the elongation of said resin blend is higher than the arithmetic mean (.epsilon.) of elongations of the respective thermoplastic resins, and wherein the container has a thermal shrinkability (.delta.) of at least 5% in the orientation direction of said container wall.

Molded container having wall composed of oriented resin blend

A transparent multi-layer container comprising a co-extrudate of an oxygen-barrier resin layer and an orienting resin layer which is monoaxially or biaxially oriented is disclosed. An adhesive resin layer is preferably interposed between the oxygen-barrier layer and the orienting resin layer, and this co-extrudate is drawn and molded at a specific temperature determined relatively to the melting points and softening points of the respective resins. This container is excellent in the combination of transparency, rigidity, mechanical strength, gas-barrier property and interlaminar peel strength.

Process for making a container

Can end sealing rubber composition containing a styrene-butadiene

Multilayer container

A metal-bonding adhesive composition consisting essentially of 95 - 60% by weight, based on the total composition, of an aliphatic homopolyamide and 5 - 40% by weight, based on the total composition, of an aliphatic copolyamide, said homopolyamide being a crystalline homopolyamide having up to 14 amide groups per 100 carbon atoms, and said copolyamide consisting of 90 - 70% by weight of (1) a polyamide having up to 14 amide groups per 100 carbon atoms and 10 - 30% by weight of (2) at least one polyamide whose recurring units are different from those of said polyamide (1), and a metallic can body composed of a metal blank, both side end portions of which are bonded by the side-lap-seam interposed by a layer of said adhesive composition.

Metal-bonding adhesive compositions

A packaging material having an improved gas permeation resistance, which comprises at least one layer composed of (A) an ethylene-vinyl alcohol copolymer having a vinyl alcohol content of 50 to 75 mole % and a residual vinyl ester content of up to 4 mole % based on the sum of the vinyl alcohol and vinyl ester or (B) a blend of said ethylene-vinyl alcohol copolymer with up to 150% by weight, based on said copolymer, of at least one thermoplastic polymer other than said copolymer, said ethylenevinyl alcohol copolymer having a main endothermic peak satisfying substantially the following requirement:

Packaging materials having excellent gas permeation resistance and

A resin laminate structure comprising a layer of a polyolefin and a layer of an ethylene-vinyl acetate copolymer saponified product having an ethylene content of 25 to 50 mole % and a degree of saponification of at least 96 %, wherein a thermoplastic polymer having a carbonyl group in the main chain or side chain thereof is incorporated in at least one of said two layers in an amount of 5 to 100 parts by weight per 100 parts by weight of said polyolefin or said ethylene-vinyl acetate copolymer saponified product.

Resinious laminates having improved gas permeation and delamination

A resin laminate structure comprising a layer of a polymer selected from the group consisting of polyolefins and saponified products of ethylene-vinyl acetate copolymers and a layer of a blend comprising (A) a polyolefin and (B) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 25 to 50 mole % and a degree of saponification of at least 96% at an A:B mixing weight ratio ranging from 98:2 to 2:98, said two layers being laminated so that they are adjacent to each other.

Resinous laminates having improved gas permeation and resistance to

Growing community of inventors

Yokohama, Japan

Akira Kishimoto