SAMMENFOLDBAR DISPENSERTUBE MED AAPNING FORSEGLET MED ET ARKFORMET FLERLAGSMATERIALE SAMT FREMGANGSMAATE FOR HERMETISK LUKKING DERAV.

摘要

A collapsible dispensing tube has a multi-layer sheet material sealed over its dispensing orifice to provide a hermetically sealed tube. The multi-layer sealant sheet comprises two layers of metal foil separated by a polymer layer firmly adhered to the metal foil layers. A polymeric layer is adhered to the outer surface of one of the metal foil layers and serves to seal the tube orifice. The laminated sheet may be sealed across the orifice by the application of radio-frequency energy.