Page 1 for Press Release: ProTec Polymer Processing at K 2013:
SOMOS® BB500: A new, powerful gravimetric batch dosing system

Hall 9, Stand D60, Düsseldorf, October 16 - 23, 2013

ProTec Polymer Processing at K 2013

SOMOS® BB500: A new, powerful gravimetric batch dosing system

Bensheim and Düsseldorf, October 16, 2013. – The SOMOS® BB500 dosing and mixing system presented for the first time at the K 2013 is suitable both for supplying injection molding machines and extruders with multi-component mixtures. This batch dosing system is designed for a maximum of four free-flowing components and for throughputs of up to around 500kg/h (at a bulk weight of 0.6kg/l). The system is mounted directly onto the material feeder of the processing machine – or onto a frame near the machine – and can be equipped with SOMOS® suction conveyors for automatic filling of the material tank. Ease of use is ensured by a touchscreen controller equipped with a graphical user interface (MH 45)specially tailored to the range of tasks performed by a batch dosing machine. Up to 50 stored, individual mixture formulae can be called up and used immediately. Another special feature is that the system can be equipped with a second weigh cell to enable it to take over throughput regulation of an extruder. The new SOMOS® BB500 batch dosing system offers high dosing precision at an attractive price-performance ratio.

The individual components of a material mixture are dosed in sequence into a weighing hopper according to the recipe and the entire batch is then homogeneously mixed by a four-blade mixer in a mixing hopper below. The weighing hopper has a volume of 10l, the mixing hopper a volume of 30l. The respective discharge from the material supply hopper, weighing and mixing hoppers is equipped with pneumatically operated slide gate systems. To regulate the material flow into the weighing hopper, a reduction ring can be fitted to the discharge from the material supply hopper to reduce its diameter. In addition, the cylinder stroke for opening the slide can be reduced with the aid of set screws. In this way, the SOMOS® BB500 batch dosing system enables extremely cost-effective gravimetric dosing of even very small mixing proportions using slide gate systems, achieving precisions of ±1% up to ±0.5% of the dosing weight of the respective component. Quick releases and spacious access to the material containers and weighing area as well as removable mixer components enable materials to be changed very easily and quickly. The size of the material storage tank is freely selectable at all positions; hoppers for pellets as well as special hoppers for regrind, each with different volumes, are available.

The intuitive and powerful controller with a 6" color touchscreen is included as standard in this high-quality design. The local memory in the network-enabled controller can also store and provide direct access to recipes and other data. A USB interface fitted as standard allows users to export recipes and data or import additional, externally stored recipes. If the mixing hopper, in addition to the weighing hopper, is also equipped with a weigh cell (optional), the controller of the batch dosing system can simultaneously regulate the throughput of an extruder supplied by it. The ability to control conveyors is also provided as standard: A conveyor for feeding the supply hopper can be allocated to each dosing component. To prevent the system operator from making unauthorized changes, the controller features two operating levels with password-protected access to the administrator level.

ProTec Polymer Processing GmbH with headquarters in Bensheim bundles the renowned brands SOMOS® and OHL: Machines and entire system solutions for efficient material handling in all plastic treatment processes currently in use, machines for the post-condensation of solid plastic matter as well as turn-key machines for bottle-to-bottle recycling of PET. ProTec Polymer Processing is a member of the Schoeller Plast Industries Group of companies with manufacturing locations in Germany, Denmark and Brazil. The company's integration into the global sales and service network of the Schoeller Group ( offers the optimum infrastructure for comprehensive on-site customer service.

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Further information:

Grit Feistkorn, Manager Marketing

ProTec Polymer Processing GmbH, Bensheim Headquarters, Stubenwald-Allee 9, D-64625 Bensheim

Phone: +49 (0) 6251 77061-150, Fax: - 81 150, E-mail:

Editorial contact and sample copies:

Dr. Georg Krassowski, Konsens PR GmbH & Co. KG,

Hans-Kudlich-Straße 25, D-64823 Groß-Umstadt –

Phone: +49 (0) 60 78 / 93 63 - 0, Fax: - 20, E-mail:

Dear Colleagues,

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The new SOMOS® BB500 gravimetric batch dosing system is designed for up to four free-flowing materials and a throughput of up to 500kg/h.

Picture: ProTec Polymer Processing

ProTec Polymer Processing GmbH • •