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US 6,974,406 B2Granted
Side-sealed bag having label section and method of production therefor
OwnerPaul Antonacciinventor
Life of this patent
Estimating the term…
Abstract
The present invention provides an improved side-sealed bag comprising an open, mesh-like fabric and a label section. The bag has a closed end formed by a fold in the fabric, an opposing end and longitudinal, heat-sealed side seams extending from the closed end to the opposing end. The bags are used for packaging articles for which visibility and/or breathability of the bag fabric are useful characteristics. In a preferred embodiment, the bags are also suited for manufacture and filling using high speed, automated equipment.
Claims45
A method of high-speed bag manufacturing, comprising the step of:
- a. bringing into contact an edge of at least one first open thermoplastic fabric section, and an edge of at least one second open thermoplastic fabric sheet with at least one film section to form a prepared sheet, said at least one film section selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric,
- wherein said prepared sheet is V-folded along a central axis to form a closed butt end, and wherein opposing overlapping edges of said prepared sheet are sealed via a thermoplastic sealing strip to form a bag having at least one opening.
A method of high-speed bag manufacturing, comprising the steps of:
- a. bringing into contact an edge of at least one first open thermoplastic fabric sheet, and an edge of at least one second open thermoplastic fabric section with at least one film section to form a prepared sheet, said at least one film section selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric, wherein said prepared sheet is V-folded along a central axis to form a closed butt end, and wherein opposing overlapping edges of said prepared sheet are sealed to form a bag having at least one opening;
- and
- b. sealing said opposing overlapping edges of said prepared sheet via a sealing means, said sealing means comprising a first thermoplastic sealing strip and a second thermoplastic sealing strip.
A method of high-speed bag manufacturing, comprising the steps of:
- a. bringing into contact an edge of at least one first open thermoplastic fabric sheet, and an edge of at least one second open thermoplastic fabric sheet with at least one film section to form a prepared sheet, said at least one film section selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric, wherein said at least one first open thermoplastic fabric sheet comprises a width at least equal to a combined width of said at least one film section and said at least one second open thermoplastic fabric section such that a central axis is disposed on said at least one first open thermoplastic fabric section, and
- wherein said prepared sheet is V-folded along said central axis to form a closed, butt end, and wherein opposing overlapping edges of said prepared sheet are sealed via a thermoplastic sealing strip to form a bag having at least one opening.
A method of high-speed bag manufacturing, comprising the steps of:
- a. bringing into contact an edge of at least one first continuous stream of open thermoplastic fabric, and an edge of at least one second continuous stream of open thermoplastic fabric with at least one continuous stream of film to form a bag stock, said at least one continuous stream of film selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric,
- wherein said bag stock is V-folded along a longitudinally disposed central axis to form a continuous, closed butt end, and wherein said bag stock is transversely sealed via a plurality of thermoplastic sealing strips, and cut, at pre-selected distances to form bags having at least one opening.
A method of high-speed bag manufacturing, comprising the steps of:
- a. bringing into contact an edge of at least one first continuous stream of open thermoplastic fabric, and an edge of at least one second continuous stream of open thermoplastic fabric with at least one continuous stream of film to form a bag stock, said at least one continuous stream of film selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric, wherein said bag stock is V-folded along a longitudinally disposed central axis to form a continuous, closed butt end, and wherein said bag stock is transversely sealed and cut, at pre-selected distances to form bags having at least one opening;
- and
- b. sealing V-folded said bag stock at said pre-selected distances via a sealing means, said sealing means comprising a plurality of thermoplastic sealing strips, wherein said bags cut from said bag stock each comprise a first thermoplastic sealing strip and a second thermoplastic sealing strip positioned opposite edges thereof.
A method of high-speed bag manufacturing, comprising the steps of:
- a. bringing into contact an edge of at least one first continuous stream of open thermoplastic fabric, and an edge of at least one second continuous stream of open thermoplastic fabric with at least one continuous stream of film to form a bag stock, said at least one continuous stream of film selected from the group consisting of polyolefin films, and films sealable to open thermoplastic fabric, wherein said at least one first continuous stream of open thermoplastic fabric compirses a width at least equal to a combined width of said at least one continuous stream of film and said at least one second continuous stream of open thermoplastic fabric such that a central axis is longitudinally disposed on said at least one first continuous stream of open thermoplastic fabric, and
- wherein said bag stock is V-folded along said central axis to form a continuous, closed butt end, and wherein said bag stock is transversely sealed via a plurality of thermoplastic sealing strips, and cut, at pre-selected distances to form bags having at least one opening.
Dependencies are inferred from the claim text.