Zero joint - Hot air technology

Hot air technology is an edge banding process for the creation of a so-called zero joint. The development of this technology comes from Schugoma. In 2011 they presented the Hot-Air-System at Ligna. In the meantime, various manufacturers have developed further gluing processes to achieve a zero joint with hot air.

Process

Compressed air fed into a storage tank is heated to 300-600°C by a patented rotary air heater. The heated air is directed through a slotted nozzle shortly before the pressure rollers at a constant temperature and constant volume flow onto the functional layer of the edgeband and melted. A sensor detects the length of the workpiece, so that the air consumption is reduced to a minimum. No air is consumed in idle mode. To protect adjacent units from the heat, the hot air unit is provided with insulation. Since the technology was introduced, both energy consumption and heating time have been reduced.

Interesting facts

Despite the criticism of the noise level, high energy and air consumption and a slower throughput time, this method is used in trade and medium-sized businesses. One reason for this is the relatively low acquisition costs. Retrofitting is possible for both edge banding machines and machining centres. Mobile and stationary units for craftsmen;41163} are also available.

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Images

HIT-M 103
MAFELL, 2020
Hot-Air-Technologie (REHAU 2016)
HOLZKRAFT