INTEGRAL BLASGEFORMTER BAG-IN-CONTAINER MIT EINER INNENSCHICHT UND EINER AUSSENSCHICHT, DIE AUS DEM GLEICHEN MATERIAL HERGESTELLT SIND, UND VORFORMLING ZU DESSEN HERSTELLUNG

摘要

The present invention relates to an integrally blow-moulded bag-in-container having an integrally blow-moulded bag-in-container wherein the same polymer is in contact on either side of the interface between the inner and outer layers. It also concerns a preform for blow-moulding a bag-in-container, having an inner layer and an outer layer, wherein the preform forms a two-layer container upon blow-moulding, and wherein the thus obtained inner layer of the container releases from the thus obtained outer layer upon introduction of a gas at a point of interface between the two layers. The inner and outer layers are the same material.