Bag closure having valve sleeve

Details Bag closure having valve sleeve Bag closure having valve sleeve

B - Operations, Transporting

65

D

220/4

B65D 30/24 (2006.01)

Patent

CA 1064431

ABSTRACT OF THE DISCLOSURE A bag having an end closure through which the bag is filled after sealing of the closure. A valve sleeve is provided in the end closure through which a filling tube may be inserted for filling the bag. After completion of the filling operation, the valve sleeve is tightly flattened within the closure, so that the material filling the bag does not leak through the sleeve. The valve sleeve includes a flexible tubing secured to a reinforcing strip. The reinforc- ing strip is secured to the end closure along substantially its entire length when the closure is sealed and prevents the flexible tubing from crimping, so that it may be tightly flattened. A slit is provided in the valve sleeve from its inner end to about its middle along an axis parallel to the axis of insertion of the filling tube into the sleeve. The means for securing the reinforcing strip to the end closure covers substantially the closure contacting face of the strip, except in the area of the slit.

278420

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