EP0084922A2 — Plastics laminate sheet for making collapsible dispensing containers, collapsible dispensing tube containers and tubular bodies therefor

USPTO Abstract

A plastic laminate sheet for making collapsible dispensing container tubes and bodies therefor comprises an outer layer (1) of filled plastics material made of polypropylene (or high impact grade polypropylene) or a blend of either with high density polyethylene. The filler is preferably calcium carbonate. The outer filled-plastics layer is coextensively bonded to an inner layer (3) of high density polyethylene to form the laminate sheet. Optionally the laminate includes a layer of an oxygen barrier plastics material which may be interposed as layer (9) between the inner and outer layers (1 and 3) to impart oxygen impermeability to the laminate. The outer layer (1) can have a grooved surface to enhance crease retention or «dead-foldability» of the laminate sheet.