Hoses for trenchless sewer rehabilitation (CIPP).


Hoses for trenchless sewer rehabilitation (CIPP).

The technique of needling or needle felting has been in use for decades and has been continuously perfected by us to this day. In this process, special felting needles pierce through the fiber layers, changing the natural arrangement and thus leading to a densification.

Needle felting is a mechanical process that does not require the addition of adhesives or the fusing of fibers. Our SOLTA®TEC needle felt is used in a variety of industrial applications.

Versions of SOLTA®LINER.

  • DN 40 to DN 1400
  • Wall thickness from 2 mm to 41 mm
  • Single or multilayer structure
  • With or without coating
  • Systems for hot water, steam or UV light curing
  • For pressure or gravity lines
  • For profiles of any type
  • Dimension jumps

Liners can be manufactured so that pipes with different diameters can be rehabilitated in one pass.

DIN EN ISO 9001 Zertifikat

Our current SOLTA®LINER product range can be found here:

Sewer and pipe rehabilitation.


DIN EN ISO 9001 Zertifikat

Quality is no coincidence with us.

Our quality promise is based on three pillars: Research, Partnership und Trust.

Technological Research.

Through our long-standing membership in the German Society for Trenchless Technology (GSTT) and the Indian Society for Trenchless Technology (IndSTT), our project-related cooperation with universities and our support of dissertations, we always keep abreast of the latest developments in manufacturing technology. In our own technical center, we implement the knowledge gained in a market-ready manner and develop new SOLTA®LINER solutions with and for our customers.

Starke Partnerschaft.

Our high quality standards apply not only to the liner ready for impregnation and the production process, but also to its use in practice. We therefore work exclusively with highly qualified and quality-oriented rehabilitation companies. As part of our cross-partner quality management system, we support the testing of joint developments. These long-standing partnerships with product users lead to assured and sustainable remediation results.

Great experience.

With SOLTA®LINER solutions, more than seven million meters of pipelines have already been permanently rehabilitated worldwide. A clear sign that we meet the high demands of the market time and again. We were the first in the world to have rehabilitation hose production successfully certified according to DIN EN ISO 9001: 2000, from the fiber to the liner ready for impregnation.

DIN EN ISO 9001 Zertifikat

Better safe than sorry: SOLTA®LINER is earthquake-proof!

In the case of needle felt liners for trenchless sewer rehabilitation, certain technical aspects are basic requirements. These include the fact that the products must be earthquake-proof.

After the dramatic earthquakes in Japan in 2011, the condition of numerous sewer pipes that had been rehabilitated with our pipe liners before the Sendai earthquakes was examined. The results were to provide information on the suitability of the pipe liners in order to gain knowledge for the future.

The extensive tests yielded a very positive result: The tested SOLTA®LINERs showed no damage whatsoever, thus proving their earthquake resistance.

Here you can find the detailed test report.