Continuous melt filter F

Filter nozzles are being increasingly used for processing thermoplastics in injection moulding machines. Clean melts, free of foreign particles, are absolutely necessary for the trouble-free and economic production of molded parts. Herzog® has developed a melt filter which is characterised by its compact and simple design. The melt filter can be assembled and prepared for operation in the shortest possible time. The melt filter is based on the so-called "gap principle". The comb-type gap geometry prevents very thin and fairly long foreign particles from slipping through. The Herzog® machine nozzle type F is an optimization of the FN type filter nozzle. The type F has a unique purging system which allows cleaning of the filter without having to remove or dismantle any part of the nozzle. This advantage ensures production downtime is kept to a minimum. Function The melt transported from the plasticizing unit to the filter nozzle is kept fluidic by the nozzle heating strip; fundamentally, we recommend control of the nozzle temperature. The melt is fed via generously dimensioned feed ducts (green) to the filter gaps and flows through them. Foreign particles which are larger than the gap depth are held back in the guide duct. The filtered melt flows on via outlet ducts to the injection mould. Advantages of the filter nozzle type F  Trouble free injection molding  No blockage due to foreign bodies in the mold  Minimal machine downtime due to unique particle purging system  Added homogenization benefit  Good self-cleaning effects  No material deposits in "dead corners".