B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
220/4
B65D 30/24 (2006.01) F25C 1/24 (2006.01)
Patent
CA 1302971
A B S T R A C T In order to store liquid in a foil bag with no risk that liquid leaks from the bag, the bag is provided with a valve in the inlet channel (5). The valve con- sists of two valve flaps ( 8) formed by the foil by folding and at their sides being welded together in a weld seam (2) for the formation of the channel (5) extending from the outside to the inside of the bag. The weld seam (2) is at its centre provided with a further welding in the shape of an extension (3) for- ming a narrowing in the cross section of the channel (5). When liquid is poured into the bag liquid will also flow into the hollow space between the outer foil (1) and the flap (8). Water will hereby distend these closed hollow spaces (7) and thereby press the flaps (8) against each other. This means that no liquid will escape through the flaps, and due to the narrow- ing in the channel the pressure creating the closure will be greatest opposite the narrowings (3). (Fig. 1)
535005
Gjelstrup Lars
Hansen Flemming
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Lindknud Plast A/s
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