Patent ID: 6784214
Filing Date: 2004-08-31
Classification: B29B,B29C,B29K,C08J,Y02P,Y02W

Abstract:
Process for recycling of PET-material, in which the PET-material to be processed is heated by movement and thereby is dried, crystallized and at least one of plasticized and molten, and subsequently is processed to one of PET-granulate and PET-articles, characterized in that the supplied PET-material is processed in first and second steps, wherein in the first step the PET-material is subjected to a pre-processing by subjecting it to mechanical power and thereby heating it and drying it at an elevated temperature, and simultaneously crystallizing it, and that then within the second step that precedes plasticizing or melting, the PET-material is subjected to a main processing in which the PET-material under vacuum conditions is again dried and further crystallized by subjecting it to mechanical power, wherein the main processing is performed at a temperature that is increased when compared with the pre-processing.