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2016 preview | Machinery and equipment


Right: Busch will show a Plastex


degassing


system with its latest Mink MV pumps


Busch Vacuum Pumps will show a Plastex mobile extrusion degassing system and introduce a new size option in its Mink MV series of rotary claw dry vacuum pumps. Built around Mink MV pump technology, the Plastex degassing systems are designed for removal of steam and other decomposition products during the compounding process and offer advan- tages over water ring and oil lubricated pump systems in much reduced mainte- nance requirements. The company says the Mink MV pumps are quiet in operation and can be supplied with variable speed drives for energy saving.


Mink claw vacuum pumps can also be used to


generate vacuum for feeding material into extruders and injection moulding machines and, in principle, are suitable for use in centralised vacuum systems. ❙ www.buschvacuum.com


Conair will show its R-Pro dense-phase vacuum-con- veying system for the first time in Europe at K2016. This new conveying technology is claimed to minimise pellet fracture and generation of fines and “angel hair” by moving dense “slugs” of material at low velocity. According to Conair, material speeds in the R-Pro


Below: Conair claims its R-Pro convey- ing technology reduces wear and dust generation


system range from 70 up to 366 m/min, compared to 1,372 m/min in conventional high-speed dilute-phase conveying. At such high-speeds it says pellets can smear against the sides of the tubing in traditional conveying systems, deforming and creating long streamers (angel hair) that can clog the system. Brittle materials such as polystyrene or polycarbonate may create dust and fines, while abrasive glass-filled resins can quickly wear away the inside of the conveying lines. The lower velocity R-PRO system avoids these problems. It is comprised mainly of standard vacuum-conveying components and is said to be cost-competitive with existing technology. It can be retrofitted to existing systems. Conair will also show a mobile drying/conveying system (MDCW) with DC-A touchscreen control


interface as well as a number of items from its MedLine family of cleanroom products, including a compact MicroWheel dryer fitted with a MedLine TubeLoader with built-in vacuum motor and a TB-45 TrueBlend gravimetric blender with two vacuum receivers. ❙ www.conairgroup.com


Coperion’s compounding equipment display includes an STS Mc11


35mm twin screw extruder optimised to


achieve the dispersion required for production of high quality colour masterbatch. The STS 35 Mc11


extruder will be equipped with a new


die head that has been specially developed for com- pounding colour masterbatch, allowing strands to flow evenly with virtually no dead zones. Precise pigment feeding is made possible through the use of a T35 volumetric twin screw feeder from Coperion K-Tron. It provides feeding rates of up to 2,500 dm³/h and is said to be an ideal feeding solution for powders and materials that tend to stick. The feeder is mounted on a turntable above the gearbox for simple, flexible handling, easy accessibility and quick cleaning. The extruder is equipped with the company’s CSpro basic control system and provides 11.3 Nm/cm3


of torque. Also new for K 2016 is the UG 750W underwater


pelletiser. With throughput rates of 60-70 tonnes/h, the new model fits between the current UG 750 (offering a maximum 55 tonnes/h) and the much larger UG 1000 (maximum throughput of 82 tonnes/h). The die plate shares the same dimensions as the UG 1000 and uses a newly-developed high abrasion and corrosion-resistant steel. Pilot applications are said to have achieved service life statistics double the current state-of-the-art. In the materials handling sector, the company will


show the new Gamma-Bend NT deflector elbow, which is said to effectively prevent “angel hair” build up during


54 COMPOUNDING WORLD | October 2016 www.compoundingworld.com


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