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Rilsan®

A durable alternative to stainless steel

Rilsan® is a thermoplastic synthetic coating powder that is based on castor oil, which is derived from plants. A monomer is obtained from this oil that is processed to produce nylon-11, or Rilsan®. Coating metals with Rilsan® is a cheap and durable alternative to stainless steel. Additionally this coating complies with the Kiwa, DVGW/KTW and WICS Assessment Guidelines, as well as other European directives.

Colours and layer thicknesses

We generally apply Rilsan® by fluidized bed coating, but it is also possible to use electrostatic powder coating or rotomoulding. Our standard coating for pipeline systems is colored RAL 7001 with a layer thickness of approximately 400 μm. Externally, the Rilsan® layer can be finished in any desired RAL colour. Small components can be finished with Rilsan® in white, black and blue when desired.
Only a single type is available for coating printing press rollers. This variant is a special development from our manufacturer that has good mechanical and chemical properties.

Frequently asked questions

Fluidized bed coating is a process in which preheated parts are immersed in a powder bath. This powder is kept in vortex by blowing air through the porous bottom of the bath. This causes the powder to behave as being a liquid. When the blasted and heated part is subsequently immersed in the whirlpool bath, the powder particles melt down as a solid layer.

Both small and large parts can be provided with a coating using a fluidized bed. Especially pipe sections, couplings and fittings are provided with coatings using this technique. Kersten has options to cover parts with a length of 6 meters and a diameter of approximately 1.5 meters within this process

The following coatings are suitable for application by means of fluidized bed coating:

  • Rilsan®
  • Resicoat®
  • Abcite®

Fluidized bed coating has the following advantages:

  • Specific parts with difficult-to-access surfaces can be coated easily and in a controlled manner.
  • In one operation a layer thickness of 400μm is applied, both internally and externally.
  • It is an efficient coating method with very low powder loss.

The UV resistance of a coating is the degree to which it is resistant to, for example, sunlight.

Parts used for production or transport of drinking water must be Kiwa certified. This is applicable for all coatings that are in contact with drinking water during the production process.