Method for temporarily increasing the resistance to vertical compression of a bag for transporting and holding liquids and quasi-liquids, and resulting bag

Abstract

The invention relates to a method for temporarily increasing the resistance to vertical compression of a bag for transporting and holding liquids and quasi-liquids, intended for a bag having the general shape of a cube and including receptacles of each of the corners thereof. The method consists in choosing four inflatable cushioning pouches for each bag, said pouches being elongate and having length, width and extension dimensions corresponding to the length, width and internal volume of the receptacles in the bag. Next, the four cushioning pouches are introduced into the four receptacles and are subsequently inflated, thereby trapping same in a vertical position in which they can resist compression along the vertical axis thereof. The resulting bag is characterized in that the receptacles in the four corners of the bag are each provided internally with a cushioning pouch which is optionally rigidly secured to the bag.

1 . A method of temporarily increasing the resistance to vertical compression of a bag for conveying and handling liquids and quasi-liquids, the bag comprising a liner and receptacles, the method comprising:
 choosing inflatable wedging cushions for the bag, the cushions being elongated and having a length, width and spread related to the length, width and internal volume of the bag receptacles; and   inserting the wedging cushions into the receptacles in order subsequently to inflate the cushions and thus confine them in a vertical position enabling them to resist compression along their vertical axes.   
     
     
         2 . The method according to  claim 1  wherein the wedging cushions are inflated in the receptacles after having introduced the quantity of liquid for conveyance into the liner. 
     
     
         3 . The method according to  claim 1  wherein the bag has a generally cubic shape and has four receptacles at its corners for inserting at least one wedging cushion. 
     
     
         4 . A bag, comprising a liner, receptacles, and an internal wedging cushion located in each of the receptacles and secured to the bag, the internal wedging cushions being inflatable, and wherein the inflatable wedging cushions have a length, width and spread related to the length, width and internal volume of the bag receptacles, and wherein the internal wedging cushions are inserted into the receptacles in order subsequently to inflate the cushions and thus confine them in a vertical position enabling them to resist compression along their vertical axes. 
     
     
         5 . The bag according to  claim 4  wherein the bag has a generally cubic shape and further comprises four receptacles, wherein one of the four receptacles is located at each corner of the bag. 
     
     
         6 . The bag according to  claim 4  wherein the internal wedging cushions each comprise two welded-together polyethylene films and an inflating/deflating valve.