Hot Air Dryers & Ovens

Glenro designs and manufactures hot air systems for industrial drying, curing and heating applications. Whether you need a dryer or oven for webs, fabrics, parts, printed circuit boards, wire or other products, Glenro can engineer a proven solution for your specific application requirements. Glenro hot air dryers and ovens convert gas, electricity or steam into efficient process heat. They’re equipped with state-of-the-art control systems for precise temperature regulation. Product flow and system orientation can be vertical, horizontal or arched. Ovens can heat one or both sides of the product in single- or multiple-pass configurations. Options include support rolls, conveyors, doors for easy access to the oven interior, hot air bypass, threader, cooling section and insulated ductwork.

We offer the following types of systems:

• flotation

• impingement

• through-air

• combination hot air/infrared

Our hot air system enclosures are well-insulated to minimize heat losses. The systems are shipped largely assembled, piped and wired, for easy connection to control cabinets, gas supply lines, power or steam lines. Glenro dryers and ovens offer several benefits:

• Rapid product heating increases line speeds.

• Uniform heating across webs, nonwovens, fabrics and other products.

• Precise, automatic feedback temperature control systems.

Glenro’s flotation dryers direct heated air at the product from both above and below, which not

only accelerates drying but also supports the web. The web floats between the air nozzles without making contact, which makes flotation dryers ideal for applications where the web is coated on both sides, or for delicate webs that cannot be mechanically supported.

Nozzles in flotation dryers span the entire width of the product web to create consistent air turbulence and heat transfer for uniform drying. Air velocity and temperature can be adjusted to control the drying rate. Glenro flotation dryer nozzles effectively break through the web’s boundary layer of air.

Many web, fabric and nonwoven drying applications require high velocity hot air impingement systems for maximum efficiency. Glenro’s high velocity hot air impingement dryers project heated air at the web or fabric to break through the boundary layer of air surrounding the product. The hot air transfers heat to the coating or saturant, while the turbulence created by the air velocity removes vapor from the coating surface and into the exhaust, which further facilitates rapid drying Air nozzle design is key to dryer performance. Glenro selects the nozzle configuration that gives the most effective heating and exhaust for each application, while keeping cost considerations in mind. We also design the nozzle velocity, the width of the nozzle openings, nozzle spacing, and the distance of the nozzles from the product to suit your application. We’ll finetune the variables of air volume, temperature and velocity so that you can make a better finished product, faster and less expensively.

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