SIMPLY INTELLIGENT, AND ROBUST
The conical, co-rotating MAS Extruder offers exceptional manufacturing process stability and the economical compounding of a wide variety of polymers that fulfill the strictest quality requirements.
Through the unique design of MAS’ extrusion system, the compounding and recycling of many plastic materials can be combined into one line. AKA Re-compounding. The large feed opening and high screw fill levels allow for the feeding of low bulk density or other difficult to manage materials while the co-rotating twin screw design allows for the direct compounding of other materials into the feed stream without the need for side feeders. The MAS system can combine low bulk density materials like film or fibers with regrind, pellets and or fillers and re-compound it into an engineered resin in one step, reducing heat history, saving energy and time.
The MAS Design for Compounding
While originally designed for recycling purposes, the MAS system also shines as a virgin compounding machine. The MAS extruder sports an up to 60% shorter barrel than comparable parallel twin screw extruders, saving not only precious plant real estate, but also reducing energy consumption by up to 40%. MAS also eliminates the need for side feeders, with all material being fed into the throat of the extruder, reducing headaches and ensuring an on-time delivery.
Direct Extrusion into profile and sheet
While the MAS extrusion system can easily handle conventional compounding and recycling applications with ease, it can also handle the toughest inline compounding application for profile and sheet extrusion. Due to the system’s conical design, the large feed opening allows for not only the feeding of low bulk density material, but for the direct dosing of wood flour, filler and other desired additives directly in the feed throat, creating a 100% uniform sheet, board or profile.
THE MAS CASCADING EXTRUDER
The MAS Cascade Extruder makes it possible to reprocess heavily printed materials and recycled materials with high contamination levels that are difficult to de-gas on conventional extrusion lines. The Cascade extruder works in conjunction with an upstream extruder (preferably MAS twin-screw extruder) to reprocess and de-gas the material after the melt filtration.
Depending on the size, the MAS Cascade Extruder is equipped with 2 or 3 vent ports and a melt distribution system to increase the degassing efficiency. With a MAS Cascading system, the two processes of Recycling and Re-Compounding can be combined into ONE STEP .
MAS Melt Filtration
Wood, paper, aluminum foil, non-melting polymers, etc. are very common impurities in the plastic recycling industry. Conventional filter systems using mesh screens are usually unable to cope with even small amounts of these impurities. The MAS CDF continuous melt filter separates contamination such as paper, wood, aluminum, or rubber efficiently and can deal with large amounts of contaminants in the melt stream (up to 5%). A melt pressure-controlled scraper system removes the contamination from the surface of a rotating screen disc into a discharge screw system. The impurities are discharged continuously from the CDF, while the filtered melt continues to flow downstream to the pelletizing system, profile or sheet die. The melt inside of the filter automatically controls the function of the scraper as well as the speed of the screen and discharge screw(s).
