Greiner Tool. Tec Gmbh

Greiner Extrusion Group Gmbh

C.a. Greiner & Sohne Gesellschaft M.b.h.

Leopold Weiermayer

Erwin Krumböck

Karl Gebesmaier

Gerhard Anders

Franz Purstinger

Bernhard Fischer

Franz Zorn

Karl Gebesmair

It is provided a WPC extrusion profile comprising a WPC material, in which plant fibers are embedded in a plastic matrix, wherein the WPC material has a content of naturally growing plant fibers of between 30 and 75 wt-%, and the WPC extrusion profile includes at least one foam-filled hollow chamber. The at least one hollow chamber of the WPC extrusion profile is completely filled up with a foam, in particular a closed-pore foam. The foam includes or consists of a plastic material of the same type of plastic as the matrix of the WPC material. The foaming is effected by using a physically acting blowing agent, in particular CO, wherein the density of the foam is less than 0.4 g/cmand the average cell size of the foam has a mean diameter of less than 0.4 mm.

WPC extrusion profile and apparatus and method for manufacturing the same

A calibration device for a calibration, in particular wet calibration of an extrusion device is provided. The calibration device comprises a calibrating element which includes an opening for guiding through a profile produced by means of an extrusion die of the extrusion device and at least one rotatable guide roller which is in contact with the profile when the profile is guided through the opening. The calibration device further comprises at least one separate bearing element insertable into a cutout of the calibrating element, via which the guide roller can rotatably be mounted on the calibrating element.

Calibration device, calibration method and method for manufacturing a calibration device

The invention relates to an extrusion device and an extrusion method for the extrusion of plastic profiles, in particular a nozzle plate, comprising at least one flow channel for plastic melt. At least one wall region of the flow channel can be temperature controlled in a targeted manner with a local temperature control device for setting the flow speed of the plastic melt.

Extrusion device and method for influencing wall thicknesses of an extruded plastic profile

Growing community of inventors

Wartberg, Austria

Leopold Weiermayer