Abstract:
The invention relates to a system for transforming plastics material preforms into plastics material containers having a plurality of blow moulding stations which are arranged on a carrier and in each case comprise a blow mould for expanding plastics material preforms into plastics material containers inside this blow mould by means of a pressurised pneumatic medium which is supplied to the respective blow moulding station via a pressure supply device and which is at least partially extracted again from the respective blow moulding station after the expansion operation via a pressure extraction device. According to the invention it has an energy conversion device, with the aid of which at least part of the potential energy stored in an energy store can be turned into an increase in the potential energy of a pneumatic medium associated with at least one blow mould, wherein the energy conversion device has an intermediate energy storage device, and at least part of the potential energy extracted from the energy store, and the energy transmitted by the energy conversion device, can be stored in the form of kinetic energy in the intermediate energy storage device.
Abstract:
The invention relates to a system for transforming plastics material preforms into plastics material containers having a plurality of blow molding stations which are arranged on a carrier and in each case comprise a blow mold for expanding plastics material preforms into plastics material containers inside this blow mold by means of a pressurized pneumatic medium which is supplied to the respective blow molding station via a pressure supply device and which is at least partially extracted again from the respective blow molding station after the expansion operation via a pressure extraction device. According to the invention it has an energy conversion device, with the aid of which at least part of the potential energy stored in an energy store can be turned into an increase in the potential energy of a pneumatic medium associated with at least one blow mold, wherein the energy conversion device has an intermediate energy storage device, and at least part of the potential energy extracted from the energy store, and the energy transmitted by the energy conversion device, can be stored in the form of kinetic energy in the intermediate energy storage device.
Abstract:
In a blow moulding machine for the production of plastics material containers, during a blow mould procedure, the container to be expanded is supplied with blow moulding air from a first gas preparation device on the one hand or from a second gas preparation device on the other hand. During this procedure a cooling of the base of the container is additionally carried out.
Abstract:
A method for transforming plastic preforms into plastic bottles, in which preforms are introduced into blowing stations, each blowing station having at least one blow mould and a stretching rod for stretching the preform along a longitudinal axis of the preform within the blow mould, and the preforms are expanded to form the plastic bottles by being acted upon by a gaseous medium in the blow mould, wherein a wall thickness of the plastic container is measured by at least one measuring device which outputs the measured values to a closed-loop and/or open-loop control device, wherein at least a stretching speed of the stretching rod is varied by the closed-loop and/or open-loop control device at least at times and/or at least in some locations during the blowing operation, individually for each blowing station, in order to adjust a wall thickness of the plastic bottles.
Abstract:
Plastic container with a base section, with a main body adjoining the base section in a longitudinal direction of the container forming an inner volume of the plastic container wherein the base section forms a plurality of standing foot areas, wherein a tension band extending in a radial direction is disposed between two adjacent standing foot areas, and the base section has a first curved structure with an injection point such that that the injection point projects in the longitudinal direction of the plastic container towards a mouth of the plastic container and a second curved structure adjoins the first curved structure outwardly in the radial direction, wherein this second curved structure is curved in the direction of the mouth of the plastic container, wherein a radius of curvature of the first curved structure is smaller, at least in sections, than a radius of curvature of the second curved structure.
Abstract:
A blow mould for forming plastic preforms into plastic containers, having at least two blow to mould side parts and a base part, which form a cavity, within which plastic preforms can be formed into the plastic containers by being acted upon by a flowable medium, wherein an inner wall of the blow mould side parts and of the base part having a contour which produces a predetermined shape of the plastic containers to be produced, wherein a plurality of openings being provided in at least one section of the base part, which openings allow a gaseous medium to be discharged during an expansion process of the plastic container. A ratio between a surface area of the base part and a surface area of the openings is 3-350, preferably 4-200, and particularly preferably 3-100.
Abstract:
A method for transforming plastic preforms into plastic bottles, in which preforms are introduced into blowing stations, each blowing station having at least one blow mold and a stretching rod for stretching the preform along a longitudinal axis of the preform within the blow mold, and the preforms are expanded to form the plastic bottles by being acted upon by a gaseous medium in the blow mold, wherein a wall thickness of the plastic container is measured by at least one measuring device which outputs the measured values to a closed-loop and/or open-loop control device, wherein at least a stretching speed of the stretching rod is varied by the closed-loop and/or open-loop control device at least at times and/or at least in some locations during the blowing operation, individually for each blowing station, in order to adjust a wall thickness of the plastic bottles.