Heat shrinkable container

Details Heat shrinkable container Heat shrinkable container

1984-02-21

1988-02-09

Thomas, Alexander S.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428421, 4284758, 4284761, 428483, 428518, B32B 102

Patent

active

047241764

ABSTRACT:
A novel process for manufacturing a container achieved by coextruding a middle tube of material having a low oxygen transmission rate between outer and inner tubes of olefin polymer to form a multilayered tubular unit. The outer tube is cross linked and the unit is biaxially oriented to a desired size. The inner tube is sealed to itself to complete formation of the container which includes an inner layer of olefin polymer, a middle layer of material having low oxygen permeability, and a relatively strong outer layer of cross linked olefin polymer.

REFERENCES:
patent: 3201503 (1965-08-01), Benning et al.
patent: 3524795 (1970-08-01), Peterson
patent: 3741253 (1973-06-01), Brax et al.
patent: 4048428 (1977-09-01), Baird et al.
patent: 4057667 (1977-11-01), Wiggins et al.
patent: 4064296 (1977-12-01), Bornstein et al.
patent: 4225373 (1980-09-01), Bieler et al.
patent: 4247584 (1981-01-01), Widiger et al.

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