Apparatus for transforming plastic preforms into plastic containers having a proportional valve

A method for transforming plastic preforms into plastic containers having at least one transforming device which has a blow molding device, within which the plastic preforms are transformed into the plastic containers by being acted upon with a flowable medium wherein an application device applies the flowable medium to the plastic preforms and a stretching device which has a rod-shaped body which is able to be introduced into the plastic preforms which stretches the plastic preforms at least temporarily during their transforming process in the longitudinal direction thereof, wherein by a drive device of the stretching device the rod-shaped body is moved and a control device controls the drive device and wherein by a valve arrangement the application of the plastic preforms with a flowable medium takes place, wherein this valve arrangement performs the application of the plastic preforms with at least two different pressure levels and this valve arrangement has at least one proportional valve, wherein the control device controls the drive device as a function of a valve position of the at least one proportional valve, wherein a detection device detects a position of the rod-shaped body, wherein the detection device detects a moving speed of the rod-shaped body, wherein the proportional valve is able to be cleaned with a sterilization medium including hydrogen peroxide, and wherein the proportional valve is at least partially made of materials which are resistant with respect to hydrogen peroxide.

An apparatus for transforming plastic preforms into plastic containers having at least one transforming station which has a blow molding device, within which the plastic preforms are transformable into the plastic containers by being acted upon with a flowable medium, having an application device which applies the flowable medium to the plastic preforms and having a stretching device which has a rod-shaped body which is able to be introduced into the plastic preforms, in order to stretch the plastic preforms at least temporarily during their transforming process in the longitudinal direction thereof, wherein the stretching device has a drive device for moving the rod-shaped body as well as a control device for controlling the drive device and wherein the apparatus has a valve arrangement which controls the application of the plastic preforms with a flowable medium, wherein the valve arrangement enables application of the plastic preforms with at least two different pressure levels and the valve arrangement has at least one proportional valve, wherein the valve arrangement enables a recycling of the flowable medium, wherein the recycling of the flowable medium takes place using the proportional valve, wherein the drive device for the rod-shaped body and the proportional valve operate dependent from each other, wherein the apparatus has a detection device for detecting a position of the rod-shaped body, wherein the detection device detects a moving speed of the rod-shaped body, wherein the proportional valve is able to be cleaned with a sterilization medium including hydrogen peroxide, and wherein the proportional valve is at least partially made of materials which are resistant with respect to hydrogen peroxide.

A method for transforming plastic preforms into plastic containers having at least one transforming device which has a blow molding device, within which the plastic preforms are transformed into the plastic containers by being acted upon with a flowable medium wherein an application device applies the flowable medium to the plastic preforms and a stretching device which has a rod-shaped body which is able to be introduced into the plastic preforms which stretches the plastic preforms at least temporarily during their transforming process in the longitudinal direction thereof, wherein by a drive device of the stretching device the rod-shaped body is moved and a control device controls the drive device and wherein by a valve arrangement the application of the plastic preforms with a flowable medium takes place, wherein the valve arrangement performs the application of the plastic preforms with at least two different pressure levels and the valve arrangement has at least one proportional valve, wherein the valve arrangement performs a recycling of the flowable medium wherein the recycling of the flowable medium takes place using the proportional valve, wherein the drive device for the rod-shaped body and the proportional valve operate dependent from each other, wherein a detection device detects a position of the rod-shaped body, wherein the detection device detects a moving speed of the rod-shaped body, wherein the proportional valve is able to be cleaned with a sterilization medium including hydrogen peroxide, and wherein the proportional valve is at least partially made of materials which are resistant with respect to hydrogen peroxide.