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

1987-04-15

1990-07-24

Thomas, Alexander S.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428215, 428463, 428513, 428515, 428520, 428910, B32B 108, B32B 1508

Patent

active

049437801

ABSTRACT:
A multi-layer paperless sheet structure having an oriented substructure is provided for making tubular containers for packaging dentifrice 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: 4147291 (1979-04-01), Akao et al.
patent: 4209126 (1980-06-01), Elias
patent: 4418841 (1983-12-01), Eckstein
patent: 4539259 (1985-09-01), Zuscik
patent: 4659408 (1987-04-01), Redding

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