Alcan Packaging: Vented lid system

Lawson Mardon (Zurich, Switzerland) has introduced Cavaflex, a vented lid system that incorporates a heat-sensitive "valve." A sealed jar can be processed in the oven because the valve allows gases to excape.

Pw 20213 Law Mar Zur Swi 14

When the hot melt in the valve area cools, the container is again perfectly sealed.

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