Package making – Multiple bottle or can carrier type package – Wrap
Patent
1974-07-01
1976-08-31
Hoag, Willard E.
Package making
Multiple bottle or can carrier type package
Wrap
156 69, 156244, 156247, 156250, 156254, 264 37, 264 92, 264153, 264248, B29D 900, B65B 700
Patent
active
039771539
ABSTRACT:
A plastic container for food products and method of making the container, the body of the container thermoformed from a sheet comprising a plurality of layers which are held together in a contiguous structure without being securely bonded together, said layers of the container body functionally secured in place after filling by an interlocking closure. At least one layer provides structural rigidity and a good water vapor barrier and at least one other layer provides a barrier to the transmission of oxygen and a supplementary water vapor barrier. The container is capable of withstanding retort temperatures. Separation of the scrap sheet from which the container body is formed and recycle of separate layer scrap from the container body thermoforming process can be accomplished since the layers forming the container body are not securely bonded together.
REFERENCES:
patent: 3402873 (1968-09-01), Lauterbach
patent: 3449479 (1969-06-01), Cines
patent: 3454210 (1969-07-01), Spiegal et al.
patent: 3524795 (1970-08-01), Peterson
patent: 3619444 (1971-11-01), Roth
patent: 3732348 (1973-05-01), Ignell
patent: 3821182 (1974-06-01), Baird et al.
Hoag Willard E.
The Dow Chemical Company
Young Arthur J.
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