Plastic laminate structure and vessel
AssigneeToyo Seikan Kaisha, Ltd.
InventorsKazuo Taira, Akira Sakamoto, Muneki Yamada, Masanori Aizawa, Hiroshi Ueno
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Abstract
Disclosed is a laminate structure comprising a layer of a creep-resistant resin composed mainly of ester recurring units and a gas barrier layer containing an olefin-vinyl alcohol copolymer, which are laminated through a thermoplastic resin adhesive layer, wherein the adhesive resin is composed of a copolyester or copolyester composition comprising in the main chain at least two acid components selected from (i) an isophthalic acid component, (ii) a terephthalic acid component and (iii) a linear or cyclic aliphatic dibasic acid component.
Claims23
A laminate structure comprising (1) a layer of a creep-resistant resin composed of ester recurring units selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, polycarbonate and polyarylate and (2) a gas barrier layer containing an olefin-vinyl alcohol copolymer, said layers (1) and (2) being laminated through (3) a thermoplastic resin adhesive layer, wherein the adhesive resin is composed of a copolyester or copolyester composition comprising in the main chain at least two acid components selected from (i) an isophthalic acid component, (ii) a terephthalic acid component and (iii) a linear or cyclic aliphatic dibasic acid component, and at least one glycol component selected from the group consisting of ethylene glycol, propylene glycol, 1,4-butane diol, neopentyl glycol, cyclohexane diol, xylene glycol and hexahydroxylene glycol, said copolyester having a glass transition temperature (Tg) of -40.degree. to 75.degree. C.
Dependencies are inferred from the claim text.