Crystallization
We can crystallize even very slow crystallizating polyesters to optimize further processing
Crystallization of polyesters is orientation of the polymer chains at high temperatures in an oxygen free process. We have different technologies to convert polyesters from an amorphous state into a crystalline state. Different formulations of polyester have different rates of crystallization requiring different process technologies.
Drying
Polyester is a polycondensation polymer, so it is sensitive to degradation by moisture during processing. Therefore, it is essential to reduce the moisture level to below 0.005% (50ppm) prior to melting. This will reduce degradation to a minimum and eliminate fluctuations during processing.
Increase the IV
To improve the mechanical properties of polyesters it is necessary to increase the molecular weight (SSP). In order to avoid sticking during drying and SSP of amorphous, low IV modified polyesters, crystallization is required.
Highly modified polyesters
We are able to crystallize in line with SSP, and we can also provide this as a separate service. With a unique combination of different technologies, we can even crystallize highly modified polyesters with a low crystallization rate. We can crystallize in a continues process with a maximum capacity of 75 tons per day. We also offer crystallization in a batch process of 20 tons.
Interested in Crystallization service? Please contact us or use the Service Configurator on the right side of this page!
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