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A composite material for packaging containers which has excellent sealability, easy openability and excellent flavor-retaining property is provided. The composite material consists of a metallic foil and a thermoplastic resin selected from the group consisting of polyolefinic resins, polyester resin

A composite material for packaging containers which has excellent sealability, easy openability and excellent flavor-retaining property is provided. The composite material consists of a metallic foil and a thermoplastic resin selected from the group consisting of polyolefinic resins, polyester resins, polyamide resins, polycarbonate resins and mixtures thereof, said thermoplastic resin layer having a thickness of 1 to 20 microns and a surface roughness of not more than 4.0 m

대표청구항 ▼

A composite material for packaging containers, said composite material consisting of a metallic foil and a thermoplastic resin selected from the group consisting of polyolefinic resins, polyester resins, polyamide resins, polycarbonate resins and mixtures thereof, said thermoplastic resin layer havi

A composite material for packaging containers, said composite material consisting of a metallic foil and a thermoplastic resin selected from the group consisting of polyolefinic resins, polyester resins, polyamide resins, polycarbonate resins and mixtures thereof, said thermoplastic resin layer having a thickness of 1 to 20 microns and a surface roughness of not more than 4.0 mm Rmax L0.80 mm, said thermoplastic resin having a carbonyl concentration of 1 to 600 milliequivalents/100 g of resin for the polyolefinic resins, 1,000 to 1,300 milliequivalents/100 g of resin for the polyester resins, 500 to 1,200 milliequivalents/100 g of resin for the polyamide resins and 600 to 800 milliequivalents/100 g of resin for the polycarbonate resins.