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Certain applications, such as medical, food, electronic, and photographic products require a clean room for production.  For clean room applications, the dryer must use ultra-filtered air to dry the web, prevent any by-products of combustion from entering the supply air stream, minimize dust, and be easy to clean.


ASI has designed and manufactured dryers that adhere to the strictest clean room requirements. This is accomplished through the use of stainless steel construction inside and outside the dryer, HEPA filters for the makeup and supply air, designs that locate the heated air source and fans outside the clean room, and a weld type and finish that complies with clean room standards.

ASI's AirBars

AirBar design is one of the most important aspects to dryer performance and choosing the correct AirBar is a critical step in every dryer design. ASI has designed and developed over two dozen AirBars that are tailored to specific drying environments, products, and criteria. AirBar selection is based on multiple process variables, including line tension, web porosity, web weight, temperature sensitivity, coating characteristics, and solvent volatility.

Our AirBars include:

  • slot nozzles - impingement-style AirBars for high heat and mass transfer applications;

  • hole bars - impingement-style AirBars that supply dilution air for slower drying applications;

  • airfoils - flotation AirBars that can be mounted above or below the web to provide unparalleled lift or hold-down force and can be used:

    • with low web tensions without web flutter; and

    • for single sided web flotation;

  • dual purpose AirBars - ASI's impingement-style slot nozzles combined with a moveable wing to convert to a dilution-style AirBar; and

  • BW-style AirBars - flotation AirBars that can float the heaviest of webs and can be mounted above or below the web to provide high heat and mass transfer.

ASI AirBars & Nozzle

ASI's AirBars

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