Alpla Werke Alwin Lehner Gmbh+co. Kg

Andreas Weber

Robert Siegl

Franz Michael Lässer

Michael Schranz

The invention relates to a method in which a polyester melt containing one or more polyesters is produced, the polyester melt being foamed by a blowing agent and a foamed granulate is produced from the foamed polyester melt. The intrinsic viscosity (IV) of the polyester melt is reduced by the blowing agent about at least 0.05 dl/g, measured according to ASTM D4603, and the IV of the foamed granulate is then increased by means of a solid phase polycondensation (SSP).

Method for producing a foamed granulate and use thereof

The invention relates to a PET regranulate which, after modification of a granulated PET recyclate, has an intrinsic viscosity of at least 0.95 dl/g measured according to ASTM D 4603, preferably greater than 1.0 dl/g and particularly preferably between 1.1 dl/g and 1.7 dl/g and is suitable for the production of extrusion blow-molded containers.

Pet regranulate having high intrinsic viscosity and method for the production thereof

The invention relates to a recycling process for contaminated polyolefins, in particular HDPE, wherein the contaminated polyolefin is swelled using a solvent such that contaminants in the polyolefin dissolve in the solvent, and the solvent as well as the contaminants dissolved from the solvent are removed from the polyolefin.

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Thuringen, Austria

Andreas Weber