Patent ID: 6228011
Filing Date: 2001-05-08
Classification: B65D,Y10S

Abstract:
An apparatus for forming a bag-in-carton, said apparatus comprising:means for setting up a carton blank for a carton with a flexible inner bag of tubular film having two ends and openings on both ends thereof into a rectangular parallelepiped carton so that the carton has openings on both ends thereof;means for sealing one side opening of the inner bag that is in correspondence with a side opening of the partially set up carton to form a side seal-closed portion, the sealing means including means for sealing a first sealed portion of said inner bag extending across a top of said inner bag and having a pair of flaps, means for prossesing said flaps to remove air therefrom, and further sealing means to seal said pair of flaps to said first sealed portion to form a second sealed portion that is at an angle to said first sealed portion;means for closing said one side opening of the partially set up carton to form a side closed portion;a forming jig that (1) is to be inserted into the inner bag through the other side opening of the partially set up carton and through the other side opening of the inner bag, (2) comes into contact with said one side seal-closed portion of the inner bag, and (3) presses said one side seal-closed portion of the inner bag against said one side closed portion of the partially set up carton to form the shape of said one side seal-closed portion of the inner bag in accordance with that of said one side closed portion of the partially set up carton; anda pressing plate opposed to the forming jig, for coming into contact with said one side closed portion of the partially set up carton and pressing said one side closed portion of the partially set up carton and said one side seal-closed portion of the inner bag between the forming jig and the pressing plate, thus permitting formation of a bag-in-carton of uniform, constantly stable shape with little residual content upon discharge of the contents of the inner bag.