Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1980-10-14
1983-07-26
Coan, James F.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
156254, 493223, 493227, B31B 164
Patent
active
043952542
ABSTRACT:
Disposable receptacles for storing articles in sterile condition and having breather means integral with the walls thereof, as well as apparatus and methods for making such receptacles and the materials therefor, are disclosed. The receptacles are fabricated of a laminate comprising a layer of breathable barrier material such as paper and a layer of thermoplastic, polymeric material such as polyethylene. The breather means may be made by heat sealing the thermoplastic layers of a pair of laminated sheets together at small, selected areas and then separating the sheets causing localized delamination of the layers and the formation of ruptured, blister-like projections in the thermoplastic layers at the heat seal positions.
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