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US 4,257,535 AGranted
Container for liquid having a heat sealable collar for filling the container and receiving a dispensing mechanism
AssigneeWrightcel Limited
InventorLee T. Mellett
Life of this patent
Estimating the term…
Abstract
A system for a flexible container for liquids in which a socket is fixed to one wall and the container is filled through this socket. A flap being heat sealable on one surface is attached to one wall of the container and this flap underlies the socket so that after filling the socket can be closed by the flap and the filled container is sealed for transportation. Subsequently the socket can be fitted with a tap which breaks the flap seal and enables the contents of the flexible container to be dispensed.
Claims2
A flexible container, comprising:
- (a) a wall having a heat sealable opening:
- (b) a collar surrounding said heat sealable opening for filling said container before said opening is heat sealed and for receiving a dispensing means after said container is filled and said opening is heat sealed, and
- (c) a flap internally disposed within said container over said opening for providing a fluid seal over said opening after said container is filled through said collar, said flap including:
- (i) a first heat-sealable furface facing said opening for providing a fluid seal over said opening when heat is applied outside the container in the region of said flap;
- and,
- (ii) a second non-heat-sealable surface facing away from said opening for preventing said flap from being heat sealed to the interior of said container when heat is applied outside the container in the region of said flap to heat seal said flap over said opening.
3 more elements
Dependencies are inferred from the claim text.