Package making – With cover-adjunct application or formation
Patent
1975-05-06
1977-04-19
McGehee, Travis S.
Package making
With cover-adjunct application or formation
100 90, 141 80, B65B 124
Patent
active
040180301
ABSTRACT:
An arrangement for compressing a product to be packed in a package before evacuation of the package which comprises a transport device for carrying a package into which a product has been introduced but which package has not yet been closed, into the range of activity of a piston, means for lowering the piston into the package to act on the free upper surface of the product so as to compress the material in the interior of the package uni-directionally, means for subjecting the package after said compression to evacuation to further reduce the internal pressure of the product to be packed and means for sealing and closing said package. The means for compressing the material in the interior of the package is designed to effect compression to such an extent that the product to be packed will assume at least approximately the volume which the product would assume in the package if no mechanical compression had existed but the only compression had been the one subjected to the package after closing in an evacuation chamber and thereafter being brought out into the ambient atmosphere.
REFERENCES:
patent: 291683 (1884-01-01), Chapman
patent: 2132618 (1938-10-01), Hill
patent: 3748819 (1973-07-01), Christensson
Christenssons Maskiner & Patenter AB
McGehee Travis S.
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