Multi-layer sheet structure, method of making same and container

Details Multi-layer sheet structure, method of making same and container Multi-layer sheet structure, method of making same and container

1984-10-02

1987-04-21

Thomas, Alexander S.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624423, 15624424, 428 36, 222107, B32B 3100

Patent

active

046594086

ABSTRACT:
A multi-layer paperless sheet structure having an oriented substructure is provided for making tubular containers for packaging dentrifice and other products. The sheet structure comprises a unique combination of polymer layers, including a uniaxially oriented polymer (polypropylene or high density polyethylene) layer. The sheet structure has two exterior heat sealable surfaces for forming the tubular containers by lap heat seal and the resulting containers exhibit improved strength and deadfold retention properties. A method is also provided for forming the sheet structure with its oriented substructure.

REFERENCES:
patent: 3900689 (1975-08-01), Deyrup
patent: 4418841 (1983-12-01), Eckstein

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