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US 4,377,061 AGranted
Horizontal packaging apparatus
AssigneeTex Innovation AB
InventorsJan C. H. Olson, Karl G. Carlson
Life of this patent
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AssigneeTex Innovation AB
InventorsJan C. H. Olson, Karl G. Carlson
Estimating the term…
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.
An apparatus for wrapping a commodity comprising, in combination, means for supplying a pair of spaced apart layers of air-impermeable wrapping material each having a free lateral edge and for placing said pair of layers of wrapping material in registry, said layers of wrapping material being secured together along a leading edge to form an open-sided partial envelope having a closed leading portion, means for advancing a commodity along a path into engagement with said wrapping material between said layers of wrapping material, means for sealing the free lateral edges of said layers of wrapping material together to form an envelope having at least one closed lateral side and a closed leading portion with said commodity therein, means for perforating said opposed lengths of wrapping material across the width thereof to form a container length, and means for sealing the balance of said pair of layers of wrapping material of the envelope to form a wrapped commodity enclosed in a wrapper.
A method of wrapping a commodity comprising the steps of supplying a commodity to be wrapped, supplying a pair of spaced apart layers of air-impermeable wrapping material each having a free lateral edge, placing said layers of wrapping material in registry, said layers of wrapping material being secured together along a leading edge to form an open sided partial envelope having a closed leading portion, advancing a commodity along a path into engagement with the wrapping material between said layers of wrapping material, sealing the free lateral edges of said layers of wrapping material together to form an envelope having at least one closed lateral side and a closed leading portion with said commodity therein, perforating said opposed lengths of wrapping material across the width thereof to form a container length, and sealing the balance of said pair of layers of wrapping material of the envelope to form a wrapped commodity enclosed in a wrapper.
An apparatus for wrapping a commodity comprising, in combination, means for supplying a U-shaped film of air-impermeable wrapping material and having opposed free lateral edges in registry, said wrapping material being secured together along a leading edge to form an open sided partial envelope having a closed leading portion, means of advancing a commodity along a path into engagement with said wrapping material between said free lateral edges, means for sealing the free lateral edges of said wrapping material to form an envelope having a closed leading portion with said commodity therein, means for severing said opposed lengths of wrapping material across the width thereof to form a container length.
Dependencies are inferred from the claim text.