Polymeric bags and method to make same
AssigneePoly-America, L.P.
InventorsGregory James Wood, Anthony H. Bertrand
Life of this patent
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Abstract
The present invention is directed to a bag of polymeric film and a method to make the bag. The bag can be comprised of a front panel and a rear panel. The front and rear panels can each be comprised of multiple layers of film. The bag can be formed from a collapsed bubble of polymeric film that has been folded in half so that opposing edges of the collapsed bubble form an opening of the bag. One of the layers of the folded bubble can be split adjacent to an edge of the collapsed bubble and a draw tape film can be inserted between the layers of the folded and collapsed bubble. The collapsed bubble can further be embossed by a pattern that can provide enhanced properties to bags formed from the folded bubble.
Claims8
A method of forming a bag of polymeric film, the method comprising:
- folding a collapsed tube of polymeric film, the collapsed tube comprising first and second layers and opposing first and second edges, the first and second layers each having first and second halves,
- the folding positioning the first edge adjacent to the second edge, the folding defining a third edge,
- sealing the first and second halves of the first layer and the first and second halves of the second layer to one another,
- slitting the first half of the first layer to form two inner edges,
- inserting a first draw tape between the first and second layers,
- forming a first inner seal in the first and second layers adjacent to one of the two inner edges,
- forming a second inner seal in the first and second layers adjacent to the other of the two inner edges,
- and
- forming the collapsed tube into a plurality of bags.
A method of forming a bag of polymeric film, the method comprising:
- folding a collapsed tube of polymeric film, the collapsed tube comprising first and second layers and opposing first and second edges, first and second halves of the collapsed tube being defined on opposite sides of a central axis of the collapsed tube,
- the folding positioning the first edge adjacent to the second edge, the folding defining a third edge along the central axis of the collapsed tube,
- slitting a first half of the first layer to form two detached sections,
- inserting a first draw tape between first and second layers of the first half of the collapsed tube,
- attaching the two detached sections to the second layer of the first half of the collapsed tube,
- sealing the first half of the first layer, a second half of the first layer and first and second halves of the second layer to one another by a plurality of side seals extending in a cross direction, and
- separating the collapsed tube into a plurality of bags.
Dependencies are inferred from the claim text.