Packaging process

Details Packaging process Packaging process

1989-06-23

1990-01-30

Spruill, Robert L.

Package making

Methods

With contents treating

53471, 53479, B65B 728, B65B 3102, B65B 3104, B65B 5110

Patent

active

048964794

ABSTRACT:
A process of packaging goods characterized in that the goods are placed in a container (1) made of flexible thermoplastics sheet material and having a flange (2) provided with an aperture (3), partly closing the container by sealing a deformable sheet material (4) of thermoplastics material to the flange so as to leave unsealed together a part of the flange and the sheet between the aperture and the interior of the container, inserting a conduit member (7) into the aperture so as to separate the unsealed part of the flange and the sheet material, modifying the atmosphere in the container by withdrawing a part of the air in the container and introducing a preserving gas into the container, removing the conduit and sealing together the unsealed part of the sheet material and the flange whereby communication between the aperture (3) and the interior of the container is prevented.

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patent: 3744210 (1973-07-01), O'Lenick et al.
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patent: 4137688 (1979-02-01), Utz et al.
patent: 4360996 (1982-11-01), Rutter
patent: 4534154 (1985-08-01), Gaubert
patent: 4777782 (1988-10-01), Nixon, Jr. et al.

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