Abstract: This device has an outer binder having an inner side wall surface of a predetermined shape. A plurality of inner hoops having an outer side wall surface of a shape and size complementary to various levels of the inner side wall surface of the outer binder. A flexible bag of any size may be mounted and maintained in an open manner between the outer binder and a selected one of the inner hoops by inserting the bag through the inner hoop with the bag's lip portion folded to wrap around over the outer side wall of the inner hoop and then placed inside the outer binder until the folded back lip portion of the bag is sandwiched between the mating outer binder and inner hoop. The inner hoop has openings to allow the flexible bag to cling to it's side wall to ease the mounting operation.

Abstract: This device is for maintaining a flexible bag in an open manner. It has an inner hoop having an outer side wall sloping inwardly and downwardly, and an outer binder which is provided with a through opening having a complementary shape and size adapted to embrace the outer side wall of the inner hoop. The flexible bag is mounted between the inner hoop and the outer binder by first inserting the bag through the inner hoop with the bag's lip portion folded backwards to cover over the outer side wall of the inner loop. The outer binder is then fitted over the inner hoop with the folded back lip portion of the bag sandwiched between the engaging inner hoop and the outer binder. When the bag is being filled, the weight in the bag will inherently pull the inner hoop and the outer binder to engage with each other with increasing force as the weight of the load increases, and thus, in turn, securing the bag even more tightly to the device.