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More production reliability through TOPOCROM® coating systems for a fibre-friendly processing of filaments

For the processing of filaments carbonprocessing surfaces with the suitable characteristics are produced. Due to the “soft” round-ridged profile, considerable improvements in the process steps are achieved.


Transportation of fluids for wetting rovings.

40 years of experience in coating filament guiding elements

TOPOCROM® is technology leader in this sector. Decades of experience and research from the classic textile machinery industry have been successfully transferred to the field of processing carbon fibres and rovings.

Typical turned parts for filament guiding in the carbon and textile machinery industry.
On request TOPOCROM® takes over the complete manufacturing (turned part and coating).

The challenge of processing carbon fibres

Due to their high strength and rigidity, carbon fibres are increasingly used in industrial products and in the consumer sector. However, the low breaking elongation of these filaments is a challenge for the production and the further processing.

Avoiding interruptions of operation

The automated processing of technical fibres such as carbon, glass, basalt and aramid has one common challenge: If the fibres and filaments break, tear, stick or splice during processing, this leads to an interruption of operation. TOPOCROM® coatings prevent these interruptions.


Problem solver in filament processing

The TOPOCROM® carbonprocessing surface has noumerous advantages:

Advantages on the fibres guiding element

  • High resistance to wear, corrosion and abrasion
  • Longer service life
  • Homogeneous surface structure with a round ridged profile
  • Capability to transport liquids



Advantages on the composite fibre

  • Prevention of splicing
  • Prevention of wrappings
  • Prevention of dust formation
  • Good wettability (avivagen)

carbonprocessing vs. „orange peel“ surfaces

Shot-blasted or sand-blasted surface with sharp-ridged profiles

The following microscopic photographs show a ground surface, which was initially shot blast and then hard chrome plated. This conventional surface treatment produces the so-called “orange peel”, which is still used in the textile industry today. The shot-blasting rips open the metallic surface and thereby causes pointed sharp edges “riffs” which can only be unsatisfactorily smoothed out by the following hard chrome plating step.

TOPOCROM® carbonprocessing surface structure: round-ridged profile

The following images show the same ground surface that has been coated in a reactor using the TOPOCROM® principle. Preparatory roughening processes are not necessary – the surface structure is produced in a single process step. The blasting process step is no longer required. The TOPOCROM® carbonprocessing surface guarantees a fibre-friendly processing of carbon and other high-tech fibers.

Shot-blasted or sand-blasted surface with sharp-ridged profiles