Integrallly blow-moulded bag-in-container having a bag anchoring point; process for the production thereof; and tool thereof

An integrally blow-moulded bag-in-container obtainable by blow-moulding an injection moulded multi-layer preform, said bag-in-container comprising:

• an inner layer forming the bag and an outer layer forming the container;
• a single opening, the mouth, surrounded by a lip and fluidly connecting the volume defined by the bag to the atmosphere;
• and
• at least one interface vent fluidly connecting the interface between inner and outer layers to the atmosphere, wherein said bag-in-container allows controlled delamination of the inner bag from the outer container upon injection through said at least one interface vent of a pressurized gas at the interface between inner and outer layers, and wherein the bag is mechanically anchored to the outer layer at at least one point remote from said single opening and interface vent, wherein anchoring between the inner bag and the outer layer is formed during blow-moulding only.