Multi-layered blow-molded bottle
AssigneeNippon Petrochemicals Company, Limited
InventorsKatsumi Yano, Shigemitsu Kambe
Life of this patent
Estimating the term…
Abstract
A multi-layered blow-molded bottle comprising at least two layers of a polyolefin resin (A), at least two layers of an adhesive resin (B) prepared by melt-reacting an olefin polymer (b.sub.1) with a rubber (b.sub.2) and an unsaturated carboxylic acid or a derivative thereof (b.sub.3) in the presence of an organic peroxide to obtain a product and adding a rubber (b.sub.4) to the product to melt-mix them with each other, and at least one layer of a barrier resin (C) selected from among polyamide, polycarbonate, polyester, polyvinylidene chloride and saponified ethylene-vinyl acetate polymer resins, which are laminated in the order of A/B/C/B/A.
Claims1
A multi-layered blow-molded bottle comprising at least two layers of a polyolefin resin (A), at least two layers of an adhesive resin (B) prepared by melt-reacting an olefin polymer (b.sub.1) with a rubber (b.sub.2) and an unsaturated carboxylic acid or a derivative thereof (b.sub.3) in the presence of an organic peroxide to obtain a product and adding a rubber (b.sub.4) to the product to melt-mix them with each other, at least one layer of a barrier resin (C) selected from the group consisting of polyamide, polycarbonate, polyester, polyvinylidene chloride and saponified ethylene-vinyl acetate polymer resins, which are laminated in the order of A/B/C/B/A and further comprising at least one layer of a resin composition consisting essentially of components (A) (B) and (C);
- said resin composition derived from the laminate A/B/C/B/A;
- wherein said at least one layer of a resin composition consisting essentially of components (A) (B) an (C) is formed from rejected products or burrs generated in molding of the bottle;
- and
- wherein the adhesive resin (B) is prepared by melt-reacting 100 parts by weight of the olefin polymer (b.sub.1) with 0.5 to 50 parts by weight of the rubber (b.sub.2) and 0.05 to 10 parts by weight of the unsaturated carboxylic acid or derivative thereof (b.sub.3) in the presence of the organic peroxide to obtain the product and adding 0.5 to 50 parts by weight of the rubber (b.sub.4) per 100 parts by weight of the product to melt-mix them with each other.
Dependencies are inferred from the claim text.