EXTRUDER COMPRISING A DEFLECTION ELEMENT FOR TARGETED FLOW AGAINST PERFORATED PLATE REGIONS

• Main Author: LOHSE, Andreas
• Format: Patent
• Language: English; French; German
• Published: 31.10.2018
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; MAKING GRANULES OR PREFORMS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to an extruder comprising a housing having a flow channel (1) for a melt and a perforated plate (2) delimiting the flow channel (1) on the outlet side, wherein an inlet flow element (3) having passage areas (4) and covering surfaces (5) is arranged so as to be movable ahead of the perforated plate (2) in the direction of flow of the melt in such a way that, when the inlet flow element (3) is moved, a first subset of holes in the perforated plate (2) is exposed and a second subset of holes in the perforated plate (2) is closed, wherein the covering surfaces (5) extend radially from the center of the inlet flow element (3) to the rim thereof.