Flexible pouch
AssigneeAmerican Can Company
InventorThomas M. Gorshe
Life of this patent
Estimating the term…
Abstract
A flat pouch is provided with reinforcements along its opening edge adjacent the predetermined locations where sharp corners are desired when the pouch is opened. The reinforcements resist flexing when the pouch is opened, thus ensuring bending of the pouch material, and the formation of sharp corners, at the predetermined locations. A method is also provided for opening the pouch, which method ensures reliable formation of the required sharp corners in the predetermined locations.
Claims9
A substantially flat pouch made with flexible sheet material, and susceptible of being opened into a receptacle, said pouch comprising:
- a pair of opposed side wall panels joined to each other about the periphery thereof, and having a pair of opposed unjoined margins along one edge of the periphery, the combination of said joined side wall panels and said unjoined margins forming a receptacle capable of receiving and holding product;
- said margins having predetermined locations thereon for the forming of sharp corners when the pouch is opened, and said margins having reinforcement thereof adjacent each said predetermined location, whereby said margins are stiffened and rendered more resistant to flexing in said reinforced areas relative to said predetermined locations.
In the process of opening a substantially flat pouch made with flexible sheet material, the pouch having a pair of opposed side wall panels joined to each other about the periphery thereof, and having a pair of opposed unjoined margins along one edge of said periphery, the combination of said joined side wall panels and said unjoined margins forming a receptacle capable of receiving and holding product;
- a method of forming sharp corners at predetermined locations on said margins comprising the steps of:
- providing reinforcement to said margins adjacent said predetermined locations whereby said margins are stiffened and rendered more resistant to flexing in the reinforced areas relative to said predetermined locations;
- and moving each said predetermined location away from the corresponding opposing margin to thereby open the pouch, whereby said margins flex about said predetermined locations to form sharp corners in the opened pouch.
Dependencies are inferred from the claim text.