Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1984-07-02
1985-09-03
Ives, Patrick C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428 35, 428347, 428516, 428520, 428461, 222107, 426127, B65D 3508, B32B 1508, B32B 2708
Patent
active
045392595
ABSTRACT:
The stiffness and deadfold properties of laminates used to make toothpaste tubes are improved by including a layer of high density polyethylene as one of the layers of the laminate. The use of high density polyethylene obviates the need to use a layer of paper or thick foil to provide stiffness and deadfold. The laminates containing high density polyethylene also have excellent strength and other properties which make them especially suitable for making tubes used to package toothpaste or other substances.
REFERENCES:
patent: 4257536 (1981-03-01), Hilmar
patent: 4265948 (1981-05-01), Hayes et al.
patent: 4389438 (1983-06-01), Ohsuki et al.
patent: 4418841 (1983-12-01), Eckstein
Crown Zellerbach Corporation
Ives Patrick C.
Teigland Stanley M.
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