Maag Group: Enhanced Strand Pelletisers for Frequent Product Changes

Strand pelletiser from the Maag Group – (Photo: Maag).

The Maag Group has further developed its "Primo 60 E" and "Primo 120 E" strand pelletisers for use in masterbatch production and flexible compounding processes. Both models are designed for small production batches and frequent colour and formulation changes. The design focuses on improving access to the cutting chamber and reducing cleaning and changeover times.

Cutting Chamber and Tool Changes
A key design feature is the cantilevered mounting of the cutting rotor. This provides largely unobstructed access to the cutting chamber and is intended to simplify cleaning during product changes. As a result, material residues can be removed more quickly, helping to reduce colour contamination and material carryover into subsequent batches. The company does not provide quantified figures for the time savings.

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To accommodate different material properties, Maag offers more than 150 cutting rotor variants, along with matching bed knives and feed rollers. The range of applications extends from soft, elastic materials to highly filled and abrasive compounds. The cutting tools are made from materials including chromium tool steels, carbide and powder-metallurgical steels. The choice of tool material depends primarily on the wear characteristics of the material being processed.

Technical Specifications and Integration
A short, unguided section between the feed and the cutting point is designed to support precise cutting. The optional "Dual-Drive" concept allows pellet length and weight to be adjusted continuously. According to the manufacturer, strand feed speeds of up to 120 m/min are possible.

The "Primo 60 E" has a working width of 60 mm and a motor rating of 2.2 kW. The "Primo 120 E" offers a working width of 120 mm and a motor rating of 4.0 kW. Both models can be integrated into complete strand pelletising lines from the Maag Group.

The Maag Group supplies process technology for the polymer, chemical and petrochemical industries. Its portfolio includes pump and filtration systems, pelletising and size reduction equipment, recycling technology, and measurement and control systems. According to the company, the group employs more than 2,200 people. It is part of the "Pumps & Process Solutions" segment of Dover Corporation.

More information: maag.com

Maag Group, Oberglatt, Switzerland

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