Drying air-heating oven for car door manufacturer
June 2006
Temperature Measurement
UniTemp was approached by Faurecia Autoplastics, a local manufacturer for the automotive industry, to assist with a problem involving long hours of cold-drying. The client was using a water-based adhesive to glue fabric to car-door components made from wood fibre. This process required several hours of cold-drying and they were seeking an improved production time. UniTemp's solution: a standalone air heating system.
The car door panels needed to be heated to 80°C for one minute in order to achieve good adherence of a foam-based cloth. The unit provided was a standalone air heating oven, useful for heating any geometrical shape. It contained a Leister hot air heater with built-in adjustable temperature control, and a Leister air blower to supply air for the heater.
The oven was housed with a stainless steel casing, making the oven aesthetically appealing and protected from rust. The insulated oven yielded quicker production times due to less heat loss and was also safe to touch. The fibreglass safety panels minimised any chance of injury from moving parts. The power requirements were 230 V single-phase, thereby incorporating the unit easily into the factory. The system allowed for an adjustable dwell time for a range of products. Temperatures up to 500°C can be reached with the heating system resulting in quicker production time.
Gerald Rust, project engineer at Faurecia Autoplastics, states, "before we had the oven we would spray glue on both the cloth piece as well as the wood fibre. With the introduction of the heater oven, we now only spray the woodfibre (before heating it). The result is that the glue is now more conducive to bonding."
The benefits of the new air heating process include the saving of glue due to a one-sided application instead of both cloth and woodfibre, the involvement of less labour because only one side is sprayed, and ultimately quicker production times.
For more information contact David James, UniTemp, 021 762 8995, davidj@unitemp.com, www.unitemp.com
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