Food or edible material: processes – compositions – and products – Packaged or wrapped product – Packaging structure cooperating with food generated gas
Patent
1988-11-16
1990-03-20
Weinstein, Steven
Food or edible material: processes, compositions, and products
Packaged or wrapped product
Packaging structure cooperating with food generated gas
426106, 426127, 426415, 426396, 426419, 206423, 2062131, 47 84, A23B 7148, B65D 8550, B65D 8120
Patent
active
049100327
ABSTRACT:
A container capable of creating within it preselected CO.sub.2, O.sub.2, and moisture concentrations in the presence of respiring fresh fruit, vegetables, or flowers is constructed of a substantially gas-impermeable material having a gas-permeable panel that is substantially impermeable to moisture in one or more of its walls to provide a controlled flow of CO.sub.2 and O.sub.2 through its walls and a cellophane panel that is substantially impermeable to the flow of CO.sub.2 and O.sub.2 in one or more of its walls to provide a controlled flow of moisture through its walls. The gas-permeable panel is a uniaxially or biaxially oriented film where the size of the area it covers is a function of its permeance, the amount and respiration rate of the contents, and the desired steady-state oxygen concentration. The size of the cellophane panel is a function of its permeance to water vapor and the desired rate of removal of water vapor from the package.
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Modern Packaging, vol. 40 #2 (1966) P. Veeraju and M. Karel, "Controlling Atmosphere in a Fresh Fruit Package", pp. 169-172, 254.
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Edwards David
Hercules Incorporated
Weinstein Steven
LandOfFree
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