A vessel is configured to hold a product in an interior region formed in the vessel. The vessel includes an inner layer arranged to define the interior region and an outer layer. The vessel is formed using a blow-molding process in which a multiple layer parison is blow molded to form the vessel. The multiple layer parison is formed in an extrusion process in which a number of extruders are arranged to co-extrude associated inner and outer parisons to establish the multiple layer parison.

Preform (1) or preform assembly for blow molding a container (23), wherein the preform of preform assembly has a neck portion (4), a lid element (16) being provided at the neck portion, an opening extending into the neck portion, providing access to an internal space of the preform or preform assembly. Method for blow molding a container. Container blown from a preform or preform assembly.

A vessel is configured to hold a product in an interior region formed in the vessel. The vessel includes an inner layer arranged to define the interior region and an outer layer. The vessel is formed using a blow-molding process in which a multiple layer parison is blow molded to form the vessel. The multiple layer parison is formed in an extrusion process in which a number of extruders are arranged to co-extrude associated inner and outer parisons to establish the multiple layer parison.

A vessel is configured to hold a product in an interior region formed in the vessel. The vessel includes an inner layer arranged to define the interior region and an outer layer. The vessel is formed using a blow-molding process in which a multiple layer parison is blow molded to form the vessel. The multiple layer parison is formed in an extrusion process in which a number of extruders are arranged to co-extrude associated inner and outer parisons to establish the multiple layer parison.

A syringe for use in a pressurized injection of a fluid includes a syringe barrel including a polymeric material having undergone expansion via blow molding. A preform for blow molding a blow molded syringe is described, the preform including a proximal end having a retention mechanism adapted to connect to the syringe to a powered injector, a distal end having a syringe outlet section, and a barrel section between the retention mechanism and the syringe outlet section, wherein the barrel section is adapted to be blow molded to form a cylindrical wall of a syringe barrel defined between the retention mechanism and the syringe outlet section.

A syringe for use in a pressurized injection of a fluid includes a syringe barrel including a polymeric material having undergone expansion via blow molding. A preform for blow molding a blow molded syringe is described, the preform including a proximal end having a retention mechanism adapted to connect to the syringe to a powered injector, a distal end having a syringe outlet section, and a barrel section between the retention mechanism and the syringe outlet section, wherein the barrel section is adapted to be blow molded to form a cylindrical wall of a syringe barrel defined between the retention mechanism and the syringe outlet section.

An extrusion-blow-molded plastic container has a container body closed with a bottom and a neck with a pour opening. An inside wall of the container neck has at least one calibrated structuring, extending at least in places over a periphery of the inside wall. The calibrated structuring is limited in the direction of the container body by a material accumulation shaped as a collar extending at least partially along the periphery of the inside wall and essentially crosswise to a center axis of the neck.

A method of manufacturing a cartridge consisting of a stiff outer container and a deformable inner bag, where an extruder coextrudes a preform, and the method includes (a) cutting away a pinch seam from the cartridge to a residual width of 0.6 to 0.15 mm, (b) laterally compressing the cartridge and at the same time, rotating the cartridge about its longitudinal axis until the pinch seam bursts open, whereby the welded base seam of the inner bag remains adhered on one side of the burst open pinch seam and the base region of the inner bag on the other side of the inner wall of the outer container is pre-delaminated, (c) producing a reduced pressure in the inner bag so that the inner bag collapses at the pre-delaminated side, and (d) subsequently completely applying the inner bag to the inner wall of the outer container by an increased pressure.

A method for producing blow-molded structures where a preform is provided that encloses a cavity and has a preform wall limiting the cavity. The preform is placed into a blow mold and formed to a blow-molded structure, wherein the blow-molded structure has a structural wall. The preform wall or structural wall comprises an inner layer and an outer layer.