PETpla.net Insider 05 / 2014

PRODUCTS 41 PET planet insider Vol. 15 No. 05/14 Automatic dew-point and temperature control system 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 is said to maintain a constant dew-point of the process air. It is suit- able for materials that require predefined moisture content which would be dam- aged 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 +/- 1°C. 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 a control dew- point between -30°C and -5°C. www.motan-colortronic.de Granulate temperature and dew-point control system Masterbatches for RPET Sukano has introduced a range of masterbatches that are intended to allow the integra- tion of virgin polyester functions into RPET many times over . An optical brightener is said to reset the colour tone of the recycled material from yellow- ish to neutral. In addition, a melt strength enhancer reacts with broken molecular chains in the recycled PET and should restore them into almost their original strength. This increases viscos- ity and improves mechanical properties, making the material easier to process. The tough- ness of the material is claimed to be improved by impact modifiers which also improve antisplice properties for straps made from RPET. The company also offers slip/antiblock masterbatches for COF reduction at minimum haze increase as well as colour masterbatches and foaming agents. The functionalities can be combined in a single master- batch or selected separately by the converter. www.sukano.com