Edge-bonding of sheet material

Details Edge-bonding of sheet material Edge-bonding of sheet material

B - Operations, Transporting

65

D

226/106, 190/78

B65D 8/22 (2006.01) B21D 19/00 (2006.01) B31B 17/00 (2006.01) B65D 17/50 (2006.01)

Patent

CA 1207248

ABSTRACT IMPROVEMENTS IN AND RELATING TO THE EDGE-BONDING OF SHEET MATERIAL When a packaging container is formed by sealing an area of sheet material to the edge of another area of sheet material, the L-joint or T-joint so formed is sometimes liable to rupture when subjected to blows or strain. According to this invention that danger is reduced or eliminated by moulding a zone (4) of an end closure panel (3) abutting on the container wall edge to which it is jointed so that it forms a flange resting against and bonded to the face of said wall (1). The flange may be provided with a lip (6) projecting from a short length of the edge of said closure panel.

438365

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