MACHINERY | LABORATORY COMPOUNDERS
Right: Maris has developed its TM20 Hi-Tech co-rotating twin-screw extruder for laboratory compounding duties
present in laboratory compounding includes dosing of very small amounts, which requires careful adjustment through the selection of the right peripheral devices. Other key interest areas include high temperature applications, fibre-rein- forced biopolymer composites, and high-perfor- mance engineering plastics. The Compeo 44 laboratory kneader has been specifically developed to meet these R&D require- ments. According to Buss, the Compeo 44 will be engineered to support future innovative applica- tions in its traditional markets — such as HFFR compounds for wire and cable, PVC compounding, masterbatches and powder coatings — but will also be targeted at the growing battery compound sector.
Maris developed its TM20 Hi-Tech co-rotating
effective alternative to its CXE models. The RXT26 and RXT32 machines are designed around the same 1.55 diameter ratio as CXE models with screw speeds of up to 900 rpm (CXE models are available with a maximum 1,200 rpm). These new RXT models feature control platforms
from Allen-Bradley or Siemens, both of which can be serviced via an integral VPN router. A variety of screw and barrel materials can be selected for abrasive and/or corrosive compounding applica- tions. Dreiblatt says the new RXT models are designed to provide the same process flexibility and scalability for product and process develop- ment as the CXE series laboratory extruders but are more suitable for smaller/start-up companies with a limited budget.
Laboratory kneading Buss will introduce its Compeo 44 lab-scale compounder next year. The company says it is responding to increasing demand from its material supplier and academic customers for equipment to handle proof-of-concept studies, as well as manufacturing companies needing R&D capacity to carry out longer-term innovation for emerging markets and applications. Flexibility is a major requirement of a laboratory compounder, according to Buss. “The key needs include flexibility in terms of processing conditions, materials use, dosing of small amounts and scalability by means of temperature, throughput and general parameters,” says Dr Krischan Jeltsch, Head of Innovation & Digitisation. “In addition, a handy footprint and dimensions, as well as the ability to record and display all process parameters, are important requirements.” According to Buss, key development interest at
52 COMPOUNDING WORLD | December 2021
twin-screw extruder for laboratory and small-batch compounding applications, ranging from general compounds, through technical compounds to poly- meric alloys, reactive extrusion, and colour and additive masterbatches. The company says the extruder provides fast configuration change through its use of interchangeable and modular mechanical components. The machine is also said to be quiet, making it suitable for use in non-indus- trial environments such as educational and re- search organisations. Features of the machine include closed loop
water cooling circuits and electrical heating while barrel and screw element materials can be selected from a wide range of nitrided, anti-corrosive and anti-wear steels. The screw geometry is a self-clean- ing two-lobe design. The electrical cabinet is located inside the machine frame to give the TM20 Hi-Tech extruder a compact footprint. It houses the main motor speed regulator, PLC, ancillary motor drives, transformers, solid-state relays for control of the heating ele- ments, and relays for the control of the electro valves. The operation panel is mounted on a swing arm fixed to the top of the main frame, which makes it easy to access extruder control param- eters. The machine uses a Siemens PLC series S7 controller.
CLICK ON THE LINKS FOR MORE INFORMATION: �
https://rheometer.online/en/start (Leistritz) �
www.farrel-pomini.com �
www.entek.com �
www.thermofisher.com �
www.coperion.com �
www.centuryextrusion.com �
www.busscorp.com �
www.mariscorp.com
www.compoundingworld.com
IMAGE: MARIS
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