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05-21-2012

MX 30 laboratory kneader

Kneaders for Compound Development

MX 30 laboratory kneader

With the four-flight MX 30 laboratory kneader, the Buss AG, Pratteln, Switzerland, has rounded out the bottom end of its MX Series. The laboratory kneader with a screw diameter of 30 mm and downline discharge screw is designed for throughputs from 5 to 25 kg/h or for product volumes above 300 g. The maximum screw speed is 800 rpm.

A laboratory kneader with four-flight technology is thus now available for the first time for research and development as well as for process and formulation optimization. As with the larger models from the series, it is particularly well suited to the compounding of heat and shear-sensitive plastics and for the production of highly filled compounds. Typical fields of application for the different cable compounds are:

  • Halogen-free flame-retardant cable compounds (HFFR) for which the compound temperature has to be reliably maintained under 180°C during processing; above this temperature the aluminum trihydrate (ATH) flame retardant starts to break down,
  • Peroxide cross-linked polyethylene (XLPE) for cable insulation; the admissible maximum temperature during compounding here is only 125°C, above which peroxide breakdown and the cross-linking reaction start,
  • Silane cross-linked cable compounds which are preferably used for the insulation of low-voltage cables and which increasingly also contain a flame retardant, and
  • Semiconducting polyolefin compounds for power cables which contain up to 40 % w/w conductive carbon black.

An extensive range of accessories, e.g. metering units for the material feed or different pelletizers, expand the laboratory kneader into a fully equipped small compounding line.

Company profile

Buss AG

Hohenrainstrasse 10
CH 4133 PRATTELN 1
Tel.: +41 61 8256600
Fax: +41 61 8256688

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