Composite material for packaging containers

Details Composite material for packaging containers Composite material for packaging containers

1983-08-03

1985-08-06

Ives, Patricia C.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428327, 428336, 428412, 428458, 428461, 4284752, 4284761, 428463, 4283099, 426127, 2064842, 2065241, 206828, 220 1BC, 220 1S, 220419, 220468, 229 93, 229 15B, 229 35MF, B32B 2736

Patent

active

045335761

ABSTRACT:
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 .mu.m Rmax L0.80 mm. The thermoplastic resin has 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.

REFERENCES:
patent: 4397916 (1983-08-01), Nagano
patent: 4407893 (1983-10-01), Malizio
patent: 4416944 (1983-11-01), Adur

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