Rieter Automatik Gmbh

Automatik Plastics Machinery Gmbh

Maag Automatik Gmbh

Reinhardt-Karsten Muerb

Stefan Deiss

Frank Gloeckner

Horst Mueller

The invention relates to a method for producing a plastic granulate (), in which a process fluid () is contained in a process chamber () where an underwater granulation takes place and the process fluid in the process chamber has a temperature greater than 120&#xb0; C. A process pressure of at least 2.0 bar is obtained in the process chamber, at which a granulation of the plastic strands () into plastic granulate occurs. From the process chamber, a mixture () of process fluid and plastic granulate is diverted into a first cooling zone () during cooling of the plastic granulate, while maintaining the process pressure. In a first separating device (), the plastic granulate is separated from the process fluid under process pressure. In the process chamber, the process fluid has a temperature in the range from 120&#xb0; C. to 160&#xb0; C., and the process pressure obtained there is greater than the pressure of the vapour pressure curve of the process fluid. After separation from the process fluid in the first separating device, the plastic granulate is fed continuously in a line to a dealdehydization container ().

Method for producing a plastic granulate

The methods and apparatuses for granulating thermoplastic material emerging from nozzles in a perforated plate are provided. The apparatus can have a motor-driven cutter arrangement having at least one blade located opposite the perforated plate. The at least one blade can pass over the nozzles in the perforated plate and cuts pellets of the emerging thermoplastic material.

Method and device for granulating thermoplastic material

The present invention relates to a device for granulating thermoplastic materials issuing from orifices, said orifices being provided in a substantially circular arrangement in an orifice plate and being swept by blades rotating about a blade carrier shaft, said blades being held by a blade carrier in an oblique position with respect to the radial direction, the blade carrier shaft extending through the centre of the circular arrangement and a cooling medium being supplied to the orifice plate and to the blades for cooling the granulated plastic materials.

Growing community of inventors

Aschaffenburg, Germany

Reinhardt-Karsten Muerb