Package containing quality-retaining agent

Details Package containing quality-retaining agent Package containing quality-retaining agent

1985-02-04

1987-04-14

Moy, Joseph Man-Fu

Special receptacle or package

With moisture absorbent

206484, 2064842, 2065242, 426124, 428 35, B65D 8126

Patent

active

046571337

ABSTRACT:
A package containing therein an agent for retaining qualities of food products or the like. The material constituting the package comprises an outer layer made of a substantially gas-impermeable material, a first seal layer formed on the inner side of the outer layer, an inner layer formed on the inner side of the first seal layer, the inner layer allowing gas to pass through in the lateral direction thereof, and a gas-permeable second seal layer formed on the inner side of the inner layer. The peripheral portion of the second seal layer is adhered to each other to form a sealed package. The package has an exposed cross section of the inner layer, so that the environmental air can pass into the package to contact the quality-retaining agent through laterally the inner layer and then through the second seal layer.

REFERENCES:
patent: 3494457 (1970-02-01), Titchenal
patent: 4063641 (1977-12-01), Kuehn et al.
patent: 4104192 (1978-08-01), Yoshikawa et al.
patent: 4192773 (1980-03-01), Yoshikawa et al.
patent: 4384972 (1983-05-01), Nakamura et al.
patent: 4405667 (1983-09-01), Christensen et al.
patent: 4421235 (1983-12-01), Moriya
patent: 4485133 (1984-11-01), Ohtsuka et al.
patent: 4487791 (1984-12-01), Komatsu et al.
patent: 4513036 (1985-04-01), Thompson et al.
patent: 4579223 (1986-04-01), Otsuka et al.

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