Compressed air control valve
What is Automatic
Width Control?
The ACS width controller has been developed to automatically control the film width on extruders without IBC.
The system regulates the volume of air inside the bubble, thus maintaining the width of the film according to nominal value. As a consequence the operator is free to take care of other jobs in the extrusion hall because the system adopts the function of automatic width control.
How does the system work in practice?
First, the width is measured by a sensor that automatically positions itself on the edge of the film, thereby measuring the film width.
Second, the information coming from the width sensor is processed by a computer which in turn controls the ACS that maintains the target width by automatically inflating and deflating the bubble as required.
On rotating heads, a small compressor is installed on the head to rotate with the head. By means of a wireless system it communicates with the controller which controls the compressor and the valve responsible for inflating and deflating the bubble, thereby controlling the width.
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We are a technology center which has guaranteed our customers spare parts and technical support for over 30 years. As holders of an unequalled record of keeping systems running for 30 years, 24 hours a day, we are proud of the stability of our systems and the quality in technical support.
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Automatic Width Control

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Octagon measuring equipment: We have been leaders in thickness profile control and measurement for over 30 years.
Octagon Blown Film Control GmbH:
Nuernberger Straße 119 D-97076 Wuerzburg, Germany.
Telephone +49 931 27 96 70 Fax +49 931 27 96 799
contact@octagon-gmbh.de