Starlinger - Solid State Polycondensation recoSTAR SSP
State-of-the-art Solid State Polycondensation for the IV increase of PET and PES pellets. Possible source material is regranulate of bottles and preforms as well as fibres, nonwovens, sheets and strapping. The crystalline regranulate after the Starlinger iV+ process has characteristics like those of PET resin and is destined for food contact applications such as bottle-to-bottle. RECYCLING LINE recoSTAR SSP and viscoSTAR Hot pellets from the pelletising unit are transported into the crystalli- zer/post-crystallization unit where the material is pre- treated before being trans- ported to the SSP unit. The control unit with userfriendly touch- screen allows storage of process and alarm data, a history overview for each individual batch and down- loading to a PC. AA level is reduced. Foreign particles, e.g. glycol, are extracted during the preheating and SSP pro- cess under vacuum. VOCs are minimised or eliminated. The end product is approved for food contact applications. The patented outlet device of the reactor is designed for constant treat- ment time of the material in the reactor, preventing center flow of the pellets. This FIFO principle ensures efficient and regular decontamination and IV increase. The preheater heats up the rPET pellets to reaction temperature. Process parameters can be adjusted to influence the speed of the IV increase. The cooler allows immediate packing of the material.