Package making – Methods – With contents treating
Patent
1980-10-16
1983-03-22
Culver, Horace M.
Package making
Methods
With contents treating
53436, 53450, 53511, 53526, 53529, 53523, 53548, B65B 3102, B65B 6302, B65B 902
Patent
active
043770614
ABSTRACT:
A method for wrapping commodities comprising supplying a pair of spaced apart layers of air-impermeable wrapping material and securing the layers together transversely along a leading end. A commodity is inserted between the layers to lie adjacent the secured leading end. The side or sides of the layers are secured together. The layers are then perforated in a transverse row adjacent the commodity on its side opposite the other side adjacent the leading end. The layers are then sealed transversely between the commodity and the row of perforations to completely seal the commodity within the layers. Prior to completely sealing the commodity, but after perforating, the space surrounding the commodity between the layers is evacuated. The invention also covers an apparatus for carrying out the method.
REFERENCES:
patent: 3420034 (1969-01-01), Saraisky et al.
patent: 3837138 (1974-09-01), Terry
patent: 3848398 (1974-11-01), Suhr
patent: 3886713 (1975-06-01), Mitchell
patent: 4035983 (1977-07-01), Shanklin et al.
patent: 4110954 (1978-09-01), Olsson et al.
Carlson Karl G.
Olson Jan C. H.
Culver Horace M.
Tex Innovation AB
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