Device for the extrusion of plastic profiles
AssigneeTechnoplast Kunststofftechnik GmbH
InventorsRudolf Wegmaier, Frank Dorninger, Walter Gugenberger
Life of this patent
Estimating the term…
Abstract
A device for the extrusion of plastic profiles with an extruder for the melting and delivery of a plastic material and with an extrusion die for defining the profile geometry, wherein a profile slot corresponding to the profile to be extruded and being defined by an outer periphery and by at least one arbor is provided in the extrusion die. The profile tuning is made easier by having a means for operational change of the profile slot's thickness provided in at least one predetermined area between the arbor and the outer periphery as well as a means for cooling selected areas of the extruded profile provided at the exit of the die.
Claims10
Apparatus for the manufacture of plastic profiles comprising an extruder for the melting and delivery of a plastic material as an extruded profile and a dry calibration device for treating said extruded profile;
- said extruder comprising an extrusion die for defining the profile geometry, said extrusion die defining an outer periphery and including at least one arbor to thereby define a profile slot which defines the profile of the plastic material extruded therethrough;
- means for operational change of a thickness of the profile slot in at least one predetermined area between an arbor and the outer periphery;
- and a means for cooling selected areas of the extruded profile exiting the die to tune extrusion, said means for cooling comprising nozzles which eject air toward the profile as said profile exits the die.
Dependencies are inferred from the claim text.