Corner valve for plastic bags

Details Corner valve for plastic bags Corner valve for plastic bags

B - Operations, Transporting

65

D

220/4

B65D 30/24 (2006.01)

Patent

CA 1045087

CORNER VALVE FOR PLASTIC BAGS ABSTRACT OF THE DISCLOSURE One corner of a plastic bag is provided with an inwardly extending triangular fold. A rectangular insert of plastic having a reverse fold along one edge thereof is folded along a center line transverse to the reversely folded edge and secured in the triangular fold at the corner of the bag with the side edges of the insert which are perpendicular to the reverse fold being flush with the top edges of the bag. The top edges of the bag and the side edges of the rectangular insert are secured together so that the insert defines a sleeve adapted to fit over the end of a cylindrical filling spout. When the bag is completely filled the sleeve and top edges of the bag will be flattened out in a substantially horizontal plane and the reversely folded flap on the insert can be pulled out and re-folded over the top of the bag to close off the sleeve to substantially prevent the loss of the contents of the bag while permitting the escape of air from the interior of the bag.

229115

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