Degussa Aktiengesellschaft

Roehm Gmbh

Evonik Rohm Gmbh

Wolfgang Stuber

Thomas Hasskerl

Ralf Richter

Harald Häger

Jürgen Kreutz

Günther Ittmann

Helmut Hilsmann

Klaus-Dieter Schübel

Christian Eckhardt

Wilhelm Wolff

The present invention relates to a novel biaxial forming process for a preform made of a polymer material which comprises polymethyl methacrylate, to an apparatus for carrying out the process, and also to novel components obtained from a biaxial forming process and their use.

Biaxial forming process for thick-walled acrylic sheet

The present invention relates to plastic molded bodies having two-dimensional or three-dimensional image structures produced in the interior through laser subsurface engraving. The plastic molded bodies are made of plastic materials which have a content of nanoscale metal oxides having particle sizes from 1 to 500 nm, both the plastic material and also the included metal oxide being transparent to the laser light used for producing the image structures. The plastic materials from which the molded bodies are manufactured particularly contain metal oxides having particle sizes from 5 to 100 nm at a content of 0.0001 to 0.1 weight-percent. Typical metal oxides are nanoscale indium-tin oxide or antimony-tin oxide.

Plastic molded bodies having two-dimensional and three-dimensional image structures produced through laser subsurface engraving

Growing community of inventors

Udenheim, Germany

Wolfgang Stuber