Method and apparatus for shaping plastics material pre-forms into plastics material containers
AssigneeKrones AG
InventorFrank Winzinger
Life of this patent
Estimating the term…
Abstract
A method of shaping plastics material pre-forms into plastics material containers is provided, in which the plastics material pre-forms are expanded inside a blow mold with the aid of an expansion agent and a stretch rod to form the plastics material containers, and in which at least the blow mold and/or the stretch rod is or are sterilized if necessary at least in part with sterilization agent, wherein, to sterilize the outer side of the stretch rod, the stretch rod is displaced at least in part into the blow mold, and the sterilization agents are brought from a discharge element arranged outside the stretch rod to the exterior face of the stretch rod.
Claims12
A method of shaping plastics material pre-forms into plastics material containers, in which the plastics material pre-forms are expanded inside a blow mould with the aid of an expansion agent and a stretch rod to form the plastics material containers, the method comprising:
- sterilizing the blow mould and the stretch rod at least in part with a sterilization agent, wherein to sterilize an exterior face of the stretch rod, the stretch rod is displaced at least partially in the blow mould, and the sterilization agent is brought from a discharge element separated from the stretch rod and a blow moulding assembly, wherein the discharge element emits the sterilization agent on at least part of the exterior face of the stretch rod and an inner wall of the blow mould, while the stretch rod is positioned at least partially inside the blow mould and out of the plastic material pre-forms.
A method of shaping plastics material pre-forms into plastics material containers, with a blow moulding wheel which is driven continuously at least in an operation mode respectively and on which are arranged a plurality of blow moulding stations, the method comprising:
- moving, in each of the blow moulding stations, at least one stretch rod relative to the blow moulding wheel, for longitudinal expansion of the pre-forms or at least one blow mould configured to be opened for discharge of the plastics material containers;
- expanding the plastics material pre-forms inside the at least one blow mould to form the plastics material containers with the aid of an expansion agent and the at least one stretch rod;
- and
- sterilizing at least one moved element and an inner wall of the at least one blow mould with a sterilization agent emitted by a discharge element separated from at least one of the blow moulding stations in at least one of a sterilization mode and the operation mode when the at least one moved element is positioned at least partially inside the at least one blow mould and out of the plastics material pre-forms, wherein the at least one moved element is moved in the sterilization mode to a position or into an orientation which differs from positions or orientations of the at least one moved element respectively of the operation mode.
A method of shaping plastics material pre-forms into plastics material containers, in which the plastics material pre-forms are expanded inside a blow mould with the aid of an expansion agent and a stretch rod to form the plastics material containers, the method comprising:
- sterilizing an inner wall of the blow mould and the stretch rod at least in part with a sterilization agent, wherein to sterilize an outer side of the stretch rod, the stretch rod is displaced at least partially inside the blow mould, and the sterilization agent is brought from a discharge element, separated from the stretch rod and a blow moulding assembly including a blow moulding nozzle, wherein the discharge element emits the sterilization agent on at least part of the outer side of the stretch rod, while the stretch rod is positioned at least partially inside the blow mould, wherein a region of the outer side of the stretch rod is sterilized when it is continuously covered by the blow moulding nozzle in a production mode by moving the blow moulding nozzle up or by moving the stretch rod down further than in the production mode.
A method of shaping plastics material pre-forms into plastics material containers, in which the plastics material pre-forms are expanded inside a blow mould with the aid of an expansion agent and a stretch rod to form the plastics material containers, the method comprising:
- sterilizing an inner wall of the blow mould and the stretch rod at least in part with a sterilization agent, wherein to sterilize an outer side of the stretch rod, the stretch rod is displaced at least partially inside the blow mould, and the sterilization agent is brought from a discharge element separated from the stretch rod and a blow moulding assembly including a blow moulding nozzle, wherein the discharge element emits the sterilization agent on at least part of the outer side of the stretch rod, while the stretch rod is positioned at least partially inside the blow mould, wherein the sterilization agent is brought from the outside to the outer side of the stretch rod and to an outer side of a face of the blow moulding nozzle when the blow mould is opened at least in part.
Dependencies are inferred from the claim text.