PROCESSING | MIXING TECHNOLOGY
open process. Jacob says health hazards can be avoided with direct powder induction systems. Closed circuit addition also avoids contamination of the product being mixed. Ystral’s technological solutions can seal powder and liquid components off from the ambient air by means of sterile filters. Another trend is to the use of a flexible machine and plant design as a response to requirements such as variable batch sizes and ever more fre- quent product changes. Manufacturers must be able to produce many product versions and newly developed products in an order and user-oriented way. With a rigid design, machines and plants must be replaced completely in case of a process change. Jacob says that Ystral’s modular principle can be adapted and extended in accordance with requirements. Finally, he says changes in process technology are varied and do not always point in just one direction. While for example, there is a development towards a reduction in batch sizes in some industries, others are moving in the direction of larger output quanti- ties and continuous inline processes. However, independent of the direction a trend in an industry moves, Jacob says future solutions must enable decreased production costs, shorter production times, improved plant efficiency, lower energy consumption and more efficient use of raw materials.
Below: Ystral says today’s mixing plant must be flexible and efficient, while meeting
tougher safety standards
High speed models The Caccia Myx division of Plantech-CST — part of the Italian Synchro Group of companies, — has developed its third generation of high-speed mixers. According to Paolo Gasparotto, General Manager of Syncro Plantech North America, the company has invested in new mixing develop- ments over the past two years, bringing in-house
resources and building on more than twenty years of market experience in terms of design and project management. At this year’s Plast trade show in Milan, the company presented a project for a complete mixing and cooling system for PVC that Gasparotto says combines the distinctive expertise in engi- neering with technical features from Caccia Myx and Plantech-CST. He says the Heating-Cooling Mixer RCH+RCC meets the highest requirements for preparation of rigid or plasticised PVC dry blend, guaranteeing good blend quality and high throughput with easy production changes and maintenance. The RCH mixers are used where friction mixing is required. The tools rotate at high speed to induce heat into the mixing material by friction, applying only as much energy as is necessary while ensuring gentle material treatment and good dispersion of the various components is achieved. RCH mixers are built in a modular design and include an inclined discharge valve that ensures efficient emptying of the mixing vessel. Syncro-Group also developed the HP Horizontal
Cooler RCC unit for rigid or plasticised PVC dry blends, featuring agitators engineered to ensure optimal contact of the product with the cooling surface. This mixer line now has a newly designed structure and water cooling circuit to maximise efficiency. It also features adjustable blades to reduce product deposits in the cooling chamber. RCO horizontal coolers are used where large capacity and good cooling efficiency is required. They feature a special “U” design that allows cooling and homogenisation of several batches from the mixer. In many applications RCO horizon- tal coolers are used as holding vessel. The RCV Vertical Cooler mixers are used in cases of restrict- ed space requirement where ease of cleaning combined with cooling efficiency are needed. The company also offers the RCT Container mixer as a versatile solution where good homogenisation, colouring and dispersion quality is required. On the business side, the company has recently established a new US headquarters — Syncroplant- ech North America — at Charlotte in North Carolina, from where it will provide sales and technical support across all divisions of the Syncro Group. This includes Syncro Srl, Plantech-CST with Caccia Myx Division,
Eur.ex.ma, Plasmec, SB-Dry and Acelabs. US mixer manufacturer Ross has broadened its
lineup of double planetary mixing systems for handling ultra-high viscosity materials. The Sanitary Double Planetary Mixer model DPM-4S
54 COMPOUNDING WORLD | November 2023
www.compoundingworld.com
IMAGE: YSTRAL
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