Farrel Pomini offers cost effective system for processing recycled/virgin PVC
Compounding systems supplier Farrel Pomini, which is part of the HF Group, says it is offering a cost-effective method for processing virgin or recycled rigid PVC that eliminates traditional finishing requirements with its newly designed dry face pelletiser (DFP).
The process begins by compounding the rigid PVC with the Farrel Continuous Mixer (FCM) to a hot-feed single-screw extruder (a compact processor). The PVC cools as it passes through the extruder and moves on to the proprietary DFP that minimises die pressure and potential temperature increases while efficiently cutting pellets. After pelletising, an air transfer system completes the cooling process along with pellet classifying and dust and fine particle removal.
This concept eliminates the need for finishing the rigid PVC with a two-roll mill, water bath and dicer – allowing for a smaller capital investment and equipment footprint as well as expedited return on investment and enhanced safety.
The compact DFP is also said to be easy to operate and can be fully integrated into Farrel Pomini’s control system. The entire line can be completely automated with minimal operator involvement, it adds.
Meanwhile, the standard 6 L/D rotor of the FCM provides a short residence time and low heat history, especially important for processing temperature-sensitive PVC. Continuous mixing technology also features:
- Adjustable mixing intensity achieved by changing rotor speed and orifice position.
- Temperature control throughout the mixing chamber, rotors and extruder barrel.
In 2010, Harburg-Freudenberger Maschinebau GmbH, Farrel Corporation and Pomini Rubber & Plastics Srl integrated to form HF Mixing Group and a year later, Farrel Pomini was established to focus expertise in the continuous mixing equipment sector. More recently, in 2024, HF Mixing Group and HF TireTech Group merged to form HF Group.
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