COLLAPSIBLE DISPENSING TUBE WITH AN ORIFICE SEALED WITH MULTI-LAYER SEALANT SHEET MATERIAL

摘要

COLLAPSIBLE DISPENSING TUBE WITH AN ORIFICE SEALED WITH MULTI-LAYER SEALANT SHEET MATERIAL 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.