Patent ID: 9358547
Filing Date: 2016-06-07
CPC Classification: B02C,B08B,B29B,B29K,C08G,C08J,Y02W

Claim Text:
1. A method for processing and detoxification of a plastic or thermoplastic material, and for removal of contaminants or impurities from the material, comprising: heating the material under vacuum in at least one receiving tank, mixing the material, and optionally comminuting the material; introducing a gaseous rinsing medium into the receiving tank beneath a level of the material, wherein the gaseous rinsing medium enters the receiving tank or strikes the material with a velocity of at least 1 m/min, conducting the gaseous rinsing medium through at least a partial region of the material, and bringing out the gaseous rinsing medium, enriched or saturated with contaminants, from the receiving tank; wherein a quantity of the gaseous rinsing medium introduced into the receiving tank is less than 5 Nm3 (normal cubic meters Vn per DIN 1343) per hour per kilogram of material or material throughput per hour; and keeping the vacuum in the receiving tank constantly below 100 mbar while introducing the gaseous rinsing medium into the receiving tank.