Apparatus for the preparation of foamed thermoplastic extruded profiles
AssigneeWacker Chemie AG
InventorHans Jochen Barth
Life of this patent
Estimating the term…
Abstract
An apparatus for the production of extruded profiles of foamed thermoplasts consisting of an extruder having an extrusion screw and a form-giving extruder head having a flow channel therethrough characterized in that at least part of the length of said flow channel is divided by separating walls having a thickness of 0.2 to 3 mm arranged in the axial direction into individual channels of such a length and cross-section area whereby each individual channel has a nozzle coefficient k of from 0.1 to 2 mm.sup.3 ; as well as the process of extrusion.
Claims6
An apparatus for the production of extruded profiles of foamed thermoplasts consisting of an extruder having an extrusion screw and a form-giving extruder head having a flow channel therethrough characterized in that at least part of the length of said flow channel is divided by separating walls having a thickness of 0.2 to 3 mm arranged in the axial direction into individual channels of such a length and cross-section area that each individual channel has a nozzle coefficient k of from 0.1 to 2 mm.sup.3, said separating walls reducing the cross-section area of said flow channel by a minor amount only.
Dependencies are inferred from the claim text.