Collapsible bag with square ends formed by triangular portions

A collapsible bag which when filled has a pair of spaced apart ends each being generally square with four side wall portions extending therebetween, which comprises;

• a tubular blank of one piece of flexible material having a circumferentially continuous central portion and four substantially identical isosceles triangular portions adjacent each end, each triangular portion having a pair of sides extending from the central portion toward an apex of the triangular portion, said sides of each triangle being substantially at a right angle to each other, connector means connecting together adjacent sides of adjacent triangular portions adjacent their edges along lines of connection extending from at least closely adjacent the central portion toward their associated apexes at least three-fourths of the distance therebetween, the lines of connection associated with the triangular portions adjacent at least one end of the central portion terminating short of their apexes so as to at least in part define an access opening therethrough adjacent the center of the generally square end defined by such triangular portions when such bag is expanded such that when filled such bag has a pair of spaced apart and substantially square ends interconnected by four generally rectangular side walls and when empty can be collapsed into a compact configuration having a pair of overlying panels with a generally hexagonal shape and a pair of folded gusseted panels received therebetween, a tubular spout which is circumferentially continuous and of a separate piece of flexible material, said spout being disposed in such central access opening with an end portion of each triangular portion defining such central access opening overlapping said spout, connector means connecting said tubular spout to such triangular portions at least substantially around the periphery of said spout and spaced from the apexes of such triangular portions such that the parts of such triangular portions extending beyond such connector means provide flaps which can be disposed to at least in part overlie such spout.

A collapsible bag which when filled has a pair of spaced apart ends each being generally square with four side wall portions extending therebetween, which comprises a tubular blank of one piece of flexible material having a circumferentially continuous central portion and four substantially identical isosceles triangular portions adjacent each end, each triangular portion having a pair of sides extending from the central portion toward an apex of the triangular portion, said sides of each triangle being substantially at a right angle to each other, connector means connecting together adjacent sides of adjacent triangular portions adjacent their edges along lines of connection extending from at least closely adjacent the central portion toward their associated apexes at least three-fourths of the distance therebetween, the lines of connection associated with the triangular portions adjacent at least one end of the central portion terminating short of their apexes so as to at least in part define an access opening therethrough adjacent the center of the generally square end defined by such triangular portions when such bag is expanded such that when filled such bag has a pair of spaced apart and substantially square ends interconnected by four generally rectangular side walls and when empty can be collapsed into a compact configuration having a pair of overlying panels with a generally hexagonal shape and a pair of folded gusseted panels received therebetween, a tubular spout which is circumferentially continuous and of a separate piece of flexible material, said spout being disposed in such central access opening with an end portion of each triangular portion defining such central access opening overlapping said spout, connector means connecting said tubular spout to such triangular portions at least substantially around the periphery of said spout and spaced from the apexes of such triangular portions such that parts of such triangular portions extending beyond such connector means provide flaps which can be disposed to at least in part overlie such spout, and a grommet in each triangular portion associated with said spout adjacent the apex thereof and spaced from such line of connection of said spout to its associated triangular portions.

A collapsible bag which when filled has a pair of spaced apart ends each being generally square with four side wall portions extending therebetween, which comprises;

• a tubular blank of one piece of flexible material having a circumferentially continuous central portion and four substantially identical isosceles triangular portions adjacent each end, each triangular portion having a pair of sides extending from the central portion toward an apex of the triangular portion, said sides of each triangle being substantially at a right angle to each other, connector means connecting together adjacent sides of adjacent triangular portions adjacent their edges along lines of connection extending from at least closely adjacent the central portion toward their associated apexes at least three-fourths of the distance therebetween, and the lines of connection associated with the triangular portions adjacent both ends of the central portion terminating short of their apexes so as to at least in part define an access opening therethrough adjacent the center of the generally square end defined by such triangular portions when such bag is expanded such that when filled such bag has a pair of spaced apart and substantially square ends interconnected by four generally rectangular side walls and when empty can be collapsed into a compact configuration having a pair of overlying panels with a generally hexagonal shape with a pair of folded gusseted panels received therebetween, a first tubular spout and a second tubular spout each being circumferentially continuous and of a separate piece of flexible material, said first spout being disposed in the central access opening in one end of said blank with an end portion lapping the triangular portions of such one end and connector means connecting said first spout to such triangular portions along a line of connection extending at least substantially around the periphery of said first spout, said second spout being disposed in the central access opening in the other end of said blank with an end portion lapping the triangular portions of said other end and connector means connecting said second spout to such triangular portions along a line of connection extending at least substantially around the periphery of said second spout.