High viscosity polyester - new solid and melt phase process approaches

摘要

The production processes for high viscosity polyester are driven by two fast growing market segments - the packaging materials, especially the polyester bottles and the technical yarn production. Both areas are fortunately excluded from Chinese polyester fiber predominance and are growing around the world between 6 and 12 %/year. PET foam should not be forgotten, which is growing fast but from a lower level. It is interesting to observe the antagonism between plain process economy and complex process comfort in this development area which is finally also part of the overall economy for the consumer. It is becoming more complicated where IV lift up and removal of acetaldehyde depend on each other, which is the case especially in all packaging applications. There are a handful of innovations in high IV PET.