Device for the production of plastic containers by means of stretch blow moulding and device for coating the inner walls of a plastic container

Abstract

Apparatus for producing plastic containers by stretch blowing including a rotatable rotor and at least one distributor block connected to the rotor. The distributor block has a mixing chamber that can be directly connected to an internal space of a preform so that a combustion chamber is formed from the mixing chamber and the internal space of the preform. A feed device is provided for feeding an explosive fluid into the combustion chamber and a firing device is provided for firing the explosive fluid in the combustion chamber. Of importance is that the distributor block can be connected directly to a preform or to a formed container. The apparatus is desirably a round rotor machine with a rotatable carousel for receiving a plurality of distributor blocks having a mixing chamber that can be directly connected to an internal space of a preform. The distributor blocks are desirably arranged in such a way that they can be rotated together with the carousel. The invention also includes an apparatus, in particular a round rotor machine, for coating the inside walls of a plastic container with a barrier layer which is impermeable in relation to gases, aroma substances and the like, in which a stretch blowing mould is connected by way of a connecting portion to valve-controlled fluid lines in order to fill the container in the mould with at least one gas.

Description

technical field [0001] The invention relates firstly to a device, in particular to an endless rotary machine for producing plastic containers by means of the stretch blow molding process, the device having at least one distributor block with a a mixing chamber, such that the combustion chamber is formed by the mixing chamber and the interior space of the preform, a feed means for feeding an explosive fluid into the combustion chamber, and a means for igniting the explosive fluid in the combustion chamber ignition device. Furthermore, the invention relates to a device, in particular, an endless rotary machine, for coating the inner walls of plastic containers with a barrier layer impermeable to gases, aromas and the like, wherein the tension The blow mold is connected by means of a connection to a valve-controlled fluid line in order to fill a container in the mold with at least one gas. Background technique [0002] Plastic containers are usually produced by stretch blow m...

AI Technical Summary

Problems solved by technology

In the device described here, the preforms first have to be fixed on one end of a cylindrical receiving device, the side remote from the preforms being able to engage the distributor block, however, this device can only be used in straight machines , the structure of the distributor block including the ignition device is so complex and bulky that it can only be used in a static state

Furthermore, it has been found that with this arrangement a fraction of the final molded containers (a non-negligible number) do not meet the usual quality requirements

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