D10 PRO Automatic Air Rings

Outstanding gauge uniformity and cooling efficiency - the signature features delivered by our workhorse D10 dual lip air ring have been incorporated into our D10 PRO automatic gauge control air ring to make a great product even better.  The D10 PRO delivers the best of both worlds to the blown film processor; superb gauge uniformity while maintaining excellent output.

The D10 PRO's patented design delivers the desired improvement in gauge uniformity while preventing any loss in cooling efficiency.  Its operating principle assures a quick response time to any input for thickness correction.  All these features make the D10 PRO the most advanced, efficient and versatile automatic gauge control air ring available in the market.
 

Operating Principle

The primary lip of the D10 PRO is circumferentially segmented into a series of air passages that channel the air that impinges on the melt as it exits the die.   As with the standard D10 air ring, the air fed to the primary lip is a small stream diverted from the blower air supply that feeds the air ring chamber.  This small amount of primary air does not hinder the performance of the D10 PRO.  Most of the air is still directed to the secondary lip to maintain excellent gauge control and bubble stability.  This feature makes the patented design of the D10 PRO stand out from other designs for its operational efficiency.  It does not blow away excessive air, which wastes this resource and the energy used to handle it.  It does not require an additional blower or use compressed air, which would add complexity and energy to the process.  Finally, it does not need to heat air to operate, which would otherwise waste the energy that had been previously used to cool the air.

The air flow in the segments are controlled by valves that restrict or increase the air flow through the passages, as required.   When a thick spot is detected, the air flow on the corresponding segment is restricted to locally reduce the cooling of the melt.  This permits the melt to be drawn out further towards the deflector lip to stretch the film and thin the film.