member and urges the ends of the flat member inward from its flat position to a folded position in the folded position the flat member forms a gable and pushes the sides of the bag outward to expand the bag in another form a cord is used to pull the apparatus into its bag expanding position relatively flat inserts may be added to promote uniform expansion of the bag application_number US 52416690 A description referring to fig1 5 apparatus 10 comprises a generally flat member 12 and a resilient member 18 attached thereto the flat member can be constructed of cardboard corrugated board or of other suitable material by die cutting or other suitable manufacturing process a fold line 22 is provided which divides member 12 into two preferably equal sections 14 16 and permits member 12 to be folded along the line as shown for example in fig5 the resilient member which can be a rubber band or other elastic means is attached to the first member by insertion into slots 24 24 and 25 25 and looping around tabs 26 28 fig1 and 2 when the member 12 is flat the resilient member 18 is stretched and under tension the memory of the member 18 causes.