Inventa-fischer Gmbh & Co. Kg

Nanoval Gmbh & Co. Kg

Gerking, Luder

Lüder Gerking

Rainer Hagen

Martin Stobik

Bernd Hanzsch

Klaus Richter

Frank Idler

Christian Gerking

Rico Heinz

Winfried Reimann

The present disclosure relates to a device for melting a material without a crucible and for atomizing the melted material in order to produce powder, comprising: an atomizing nozzle; an induction coil having windings, which become narrower in the direction of the atomizing nozzle at least in some sections; and a material bar at least partially inserted into the induction coil. The induction coil is designed to melt the material of the material bar in order to produce a melt flow. The induction coil and the atomizing nozzle are arranged in such a way that the melt flow is or can be introduced into the atomizing nozzle through a first opening of the atomizing nozzle in order to atomize the melt flow by means of an atomizing gas, which can be introduced into the atomizing nozzle.

Device and method for melting a material without a crucible and for atomizing the melted material in order to produce powder

The invention relates to a method for producing polylactic acid, comprising the steps of obtaining lactic acid from starchy agricultural products by fermentation, ultrapurification of the lactic acid by ultrafiltration, nanofiltration and/or electrodialysis, concentration of the lactic acid and production of a prepolymer, cyclizing depolymerization to dilactide, purification of the dilactide, ring-opening polymerization of the dilactide and demonomerization of the polylactide.

Method for producing polylactic acid and corresponding device

Growing community of inventors

Berlin, Germany

Lüder Gerking