Increased reliability in the production process of carbon and other filaments.

For filament applications TOPOCROM® coating is provided with specific characteristics: "soft" surfaces, formation of air cushions and the guiding of fluids. This coating of filament guiding parts results in a significant improvement of process stability. It reduces breaks in filaments and splicing, while abrasion of the parts is significantly reduced. Sticking effects are avoided.
The special charateristic of the TOPOCROM® surface structure is the gentle treatment of fibres, filaments, non-woven fabrics and foils that it can be described as a "soft" surface.
Formation of air cushions on the surface creates excellent gliding effects.
Fluid guidance and wettability.

40 years of experience in coating of filament guiding parts

Topocrom is the technology leader in this sector. Experience and the results of research in the conventional textile machinery industry are successfully used in the area of processing of carbon fibres and rovings.
Typical rotating parts for filament guiding in the carbon and textile machinery industry. Topocrom GmbH delivers also the complete parts (workpiece and coating) if desired.

Carbon fibre processing is a challenge

Due their high strength and rigidity, carbon fibres are increasingly used in industrial products and in the consumer sector. However, the low breaking elongation makes this fibre a challenge for the production and further processing.

Problems in fibre production and roving processing

The carbon fibre (filament) has a thickness of only 5 to 7 micrometres (microns). Thousands of these fibres are bundled into a fibre bundle (roving). Unwanted faults already occur during processing in the production phase due to fibre breaks. Process interruptions can also occur during further processing of the rovings (fibre bundles), due in particular to splicing or sticking effects, but also because of breaks in the rovings. Such breaks or splicings are partly caused by unsuitable surfaces of the fibre or roving guiding parts.
Filament break during guiding process
Signs of splicing (separation of individual fibres) during roving processing
Reinforced fibres, such as carbon-fibre/glass-fibre composites, demonstrate particularly aggressive abrasion behaviour

Problem solvers in filament processing

The TOPOCROM® surface proves many advantages in carbon fibre guidance:
  • High resistance to wear, corrosion and abrasion
  • Significantly longer life time
  • The even, homogeneous surface structure is gentle on the fibres
  • Optimisation of stretching
  • Improved gliding properties thanks to formation of air cushions
  • The possibility of wetting and for the taking up of liquids avoids sticking of the fibres to the surface

Download brochure carbonprocessing as PDF

Topocrom GmbH delivers also the complete parts. Just in time.

We will also deal with the production of filament guiding parts, according to your drawings.

Creel in the carbon fibre production.