Special receptacle or package – Laminate sheet packet – With gas permeable cover
Patent
1988-06-30
1989-12-05
Price, William
Special receptacle or package
Laminate sheet packet
With gas permeable cover
2064842, 206439, 2065242, 2065244, 206631, 428354, 428 342, 428 343, B65D 564
Patent
active
048846945
ABSTRACT:
A package to be gas-sterilizable comprises a lower foil composed of a thermoplastic material and having an edge, an upper gas-permeable foil having an edge, the lower foil and the upper foil being connected with one another in the region of the edges, an intermediate gas-permeable foil arranged to protect the upper foil from a content of the package, located between the upper and lower foils and loosely extending over the upper foil, the intermediate foil being perforated and formed of thermoplastic material, the intermediate foil having an edge and upper and lower sides and being simultaneously connected by welding at the lower side with the lower foil and at the upper side with the upper foil only in the region of the edges so that a gas distributing chamber is formed between the upper foil and the intermediate foil, and means for connecting the intermediate foil with the upper foil and means for connecting the intermediate foil with the lower foil, the connecting means being formed so that the connection of the intermediate foil with the upper foil is stronger than the connection of the intermediate foil with the lower foil, so that in a closed condition of a package the intermediate foil extends loosely over the upper foil and is connected with the lower and upper foils only in the region of the edges to form the gas distributing chamber, but upon opening the package the intermediate foil is left at the upper foil.
REFERENCES:
patent: 3061087 (1962-10-01), Scrivens et al.
patent: 3435948 (1969-04-01), Kaganov et al.
patent: 4055672 (1977-10-01), Hirsch et al.
patent: 4270658 (1981-06-01), Schuster
patent: 4469258 (1984-09-01), Wright et al.
patent: 4537305 (1985-08-01), Takanashi
patent: 4673601 (1987-06-01), Lamping et al.
Price William
Striker Michael J.
LandOfFree
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