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US 4,835,948 AGranted
Bag filling machine
AssigneeBasic Packaging Systems, Inc.
InventorBrian Humphrey
Life of this patent
Estimating the term…
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AssigneeBasic Packaging Systems, Inc.
InventorBrian Humphrey
Estimating the term…
A chain of bags is disclosed, with each having first and second panels and gusseted sides, each established by first and second gusset panels. The chain of bags is provided with a transverse bottom seal which in the central portion seals together the front and rear panels, and also seals together the inner portion of the gusset panels as well as the front and rear panels for four thicknesses being sealed. At the outer portions, there are only two thicknesses sealed together, namely, the front gusset panels are sealed to the front panel and the rear gusset panels are sealed to the rear panel. This establishes a chain of bags which may be supplied to a bag filling machine whereat conveyor belts form a nip and grip only the outer portion of the rear gusset panels where attached to the rear panel. By this means, the bags of a chain may readily be opened to practically full capacity and then filled. When the bag is closed awnd sealed, it forms a rectangular bag with square ends which may readily by palletized to form a secure and stable pallet load.
A bag filling machine for use with a chain of bags which have side gussets established by front and rear side gusset panels and successive bags joined together top to bottom, said chain of bags having a transverse bottom seal for each bag which seals together the front and rear panels in the central portion and also seals together all four thicknesses of the front and rear panels and an inner portion of the lateral width of each side gusset panel but leaves the rear side gusset panels unsealed to the front side gusset panels at the outer portions of at least the rear gusset panels;
A bag filling machine for use with a chain of bags which have first and second panels and first and second gusseted sides each established by first and second gusset panels integrally joined to said first and second panels, respectively, successive bags being joined together end to end, said chain of bags having a transverse bottom seal for each bag which seals together the first and second panels in the central portion and also seals together all four thicknesses of the first and second panels and an inner portion of the lateral width of each side gusset panel but leaves the second side gusset panels unsealed to the first side gusset panels at the outer portions of at least the second gusset panels;
Dependencies are inferred from the claim text.