Method of making breathable receptacles

Details Method of making breathable receptacles Method of making breathable receptacles

1980-10-14

1983-04-19

Kimlin, Edward C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156271, 156344, 428 60, 225 2, 229DIG14, B32B 3100, B32B 300, B26F 1528

Patent

active

043804853

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.

REFERENCES:
patent: 2351498 (1944-06-01), Fowler
patent: 2847086 (1958-08-01), Muller
patent: 3207643 (1965-09-01), Sorg
patent: 4097383 (1978-06-01), Ohtani et al.

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