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US 9,844,920 B2Granted
Method and system for manufacturing bags
AssigneeGraphic Packaging International, Inc.
InventorsJoseph C. Walsh, Jeffrey T. Sloat
Life of this patent
Estimating the term…
Abstract
A system and method of manufacturing reinforced bags having reinforcing elements applied about the bags to support the bags in an opened and/or upstanding configuration. A web of bag material can be fed from a supply and can be folded and secured to form the bags. A series of reinforcing strips can be fed through an adhesive application station for application of an adhesive material thereto in a desired pattern. The reinforcing strips and bags are brought into registration and are adhesively attached to form the reinforced bags.
Claims22
A method of manufacturing reinforced bags, comprising:
- feeding a web of bag material along a path of travel;
- folding the web of bag material to form a sleeve;
- separating the bags from the sleeve of bag material;
- feeding a series of reinforcing elements along a path toward registration with the bags, each reinforcing element comprising a central body section, a first peripheral side portion foldably connected to the central body section, and a second peripheral side portion foldably connected to the central body section, wherein a first lock zone extends from a first fold line extending in the central body section to a second fold line extending in the first peripheral side portion, and a second lock zone extends from a third fold line extending in the central body section to a fourth fold line extending in the second peripheral side portion;
- applying a first adhesive material to the central body section of each of the reinforcing elements in a desired pattern sufficient to secure each reinforcing element to a corresponding bag while enabling folding of each reinforcing element to a locked position to support their corresponding bags in an open configuration;
- moving the reinforcing elements into adhesive contact with the bags;
- applying a second adhesive material to the first peripheral side portion and the second peripheral side portion of each of the reinforcing elements after the moving the reinforcing elements into adhesive contact with the bags, the first lock zone and the second lock zone being generally free of the first adhesive material and the second adhesive material;
- and
- folding the first peripheral side portion and the second peripheral side portion of each of the reinforcing elements into a position closed about the bags.
6 more elements
A method of forming bags:
- feeding a web of bag material and folding and seaming the web of bag material so as to form a series of bags moving along a first path of travel;
- moving a series of reinforcing strips of a desired width along a second path of travel toward registration with the series of bags moving along the first path of travel, each reinforcing element comprising a central body section, a first peripheral side portion foldably connected to the central body section, and a second peripheral side portion foldably connected to the central body section, wherein a first lock zone extends from a first fold line extending in the central body section to a second fold line extending in the first peripheral side portion, and a second lock zone extends from a third fold line extending in the central body section to a fourth fold line extending in the second peripheral side portion;
- applying a first adhesive to the central body section of each reinforcing strip and applying a second adhesive to the first peripheral side portion and the second peripheral side portion in a desired pattern sufficient to securely adhere each reinforcing strip to a corresponding bag while the first lock zone and the second lock zone remain generally free of the first adhesive and the second adhesive enabling folding of the first lock zone and the second lock zone of each reinforcing strip to a locked inwardly folded position to support their corresponding bags in an opened configuration;
- after application of the first adhesive to the central body section of each reinforcing strip, moving the reinforcing strips into registration with the bags and urging the reinforcing strips into adhesively engaged contact with their corresponding bags;
- and
- folding the first peripheral side portion and the second peripheral side portion of each of the reinforcing strips about their corresponding bags to secure the reinforcing strips in an enclosed position thereabout.
3 more elements
Dependencies are inferred from the claim text.