motan-colortronic have developed ATTN – an automatic temperature and dew-point control system which maintains the dew-point of the granulate being dried constantly to a defined value in line with the process parameters of the part being moulded. ATTN is now a standard feature throughout the entire LUXOR A range of dryers.
ATTN for LUXOR A dryers – 80 to 2400 litres capacity
With immediate effect, the ATTN automatic temperature and dew-point control system option is now available throughout the entire LUXOR A dryer range. ATTN, maintains a constant dew-point of the process air. It is essential for materials that require predefined moisture content and will be damaged if over dried as a result of too low dew-points. The dew-point of the process air is constantly regulated and documented to ensure regulation precision within +/- one degree.
ATTN has been designed to maintain a constant dew-point of the process air for drying plastic granules. It is generally installed in the dry air generator and can only be set to one specific dew-point between -30°C and +5°C. This pre-set dew-point value is then stored and maintained. This principle requires that the amount of moisture in the process return air is higher than the set dew-point. Under normal atmospheric conditions, this is the case.
With ATTN, all drying bins of a dry air generator are always operating with process air at the respective dew-point set value. This is particularly true for single-bin stations. However, multi-bin stations can also be equipped with this option.
ATTN and ETA plus® – a useful combination
ATTN keeps the dew-point constant, ETA plus® controls the air volume and the drying temperature. The combination of ATTN and ETA plus ® is possible and makes sense, since the control of air volume and the automatic adjustment of the temperature optimally supports proper drying at a constant dew-point: ATTN keeps the dew-point constant while ETA plus®
The motan group
The motan group, with its headquarters in Konstanz on Lake Constance in Germany, was founded in 1947. As the leading provider of sustainable materials handling, the company is active in injection moulding, blow moulding, extrusion and compounding, in-line systems and chemicals. Part of the application-orientated product spectrum are innovative modular systems solutions for storage, drying, and crystallisation, conveying, dosing and mixing for the plastics manufacturing and processing industries. Production takes place at various locations in Germany, India and China. motan distributes its products and systems solutions via its regional motan-colortronic centers. Currently, more than 500 employees contribute to an annual turnover of approximately 100 million Euros. As a result of its network and its many years of experience, motan offers its customers what they actually require: solutions with genuine added value.