Sheet for forming sleeve and process for producing the same

Details Sheet for forming sleeve and process for producing the same Sheet for forming sleeve and process for producing the same

1983-01-14

1984-08-07

Van Balen, William J.

Bottles and jars

Multilayer barrier structure

Coating or lamination

215DIG6, 264 459, 264 461, 264514, 428 35, 428 36, 4283186, 4283188, 428519, 428910, 428913, B65D 1116, B32B 108, B32B 326, B32B 2706

Patent

active

044638612

ABSTRACT:
A sleeve and method of making the same comprising a laminate sheet having a more highly shrinkable foamed film and a lesser shrinkable non-foamed film, the ends of the laminate being bonded together so that the foamed film faces the interior of the sleeve. The foamed film has a thicker surface layer on its side opposite that laminated to the non-foamed layer, which therefore faces the interior of the sleeve.
The flow direction shrinkage rate of the laminated sheet, which is 60% or less, is greater than the widthwise shrinkage rate of the laminated film. The widthwise shrinkage rate is 10% or less.

REFERENCES:
patent: 3317363 (1967-05-01), Weber
patent: 3619344 (1971-11-01), Wolinski et al.
patent: 3760968 (1973-09-01), Amberg et al.
patent: 3861994 (1975-01-01), Stark
patent: 3979000 (1976-09-01), Karabedian
patent: 4069934 (1978-01-01), Karabedian

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