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(11) | EP 0 620 160 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Snap-on closure system and method |
(57) A closure system (10) is disclosed including a container neck (14) extending axially
from a container and a cap and spout assembly (12) for snap-on receipt onto the container
neck. The cap and spout assembly includes a snap-on spout (22) having a resiliently
flexible sealing ring (32) adapted for sealing receipt onto the container neck. The
snap-on cap (20) includes a closure member (24) for closure of the spout and an interlocking
ring (26) adapted for interlocking receipt onto the container neck over the sealing
ring independent of the snap-on spout. The closure member is frangibly attached to
the interlocking ring to provide tamper-evident means for the snap-on cap. The interlocking
ring of the cap cooperates with the sealing ring of the spout to maintain a positive
seal against the container neck regardless of the internal pressure within the container. |