Method for the extrusion blow moulding of a container of thermoplastic material and extrusion blow-moulded container

A method for extrusion blow-molding a container formed of a thermoplastic material, having at least one conduit through a wall of the container, said method comprising:

• providing a insert part formed of at least one thermoplastic material, said insert part having a conduit;
• incorporating a preform formed of a thermoplastic material into a blow-molding tool having a mold cavity which defines a contour of the container;
• molding the preform within the mold cavity to form the wall of the container, wherein the preform has a mold cavity side, and on the mold cavity side encloses the insert part and is welded to the insert part;
• producing an opening in the wall of the container by a tool which is guided from outside the container through the conduit of the insert part;
• and
• wherein the insert part comprises a first thermoplastic material and a second thermoplastic material, wherein the first thermoplastic material of the insert part is weldable with the thermoplastic material of the preform forming the wall of the container.

An extrusion blow-molded container comprising:

• the extrusion blow-molded container formed of thermoplastic material, and having a conduit in a wall of the container,
• wherein an insert part is enclosed by the wall of the container and is welded to the wall of the container,
• wherein the insert part provides the conduit and has an encircling collar,
• wherein the insert part comprises a first thermoplastic material and a second thermoplastic material, and
• wherein the first thermoplastic material of the insert part is welded to the wall of the container.