BETEX TP Non-woven Fabrics


General information about BETEX TP Non-woven Fabrics

General information

The range of applications for non-woven geotextiles in civil engineering is as wide as the range of structures in which they are used. Non-woven fabrics are the archetypal geosynthetic. Depending on the structure and composition of the fabric, they can be used as a filtering, separation or protection layer in highway construction, buildings, civil engineering, gardens and landscaping.

The mode of operation is always similar, but the requirements of different construction projects can vary considerably.

BETEX TP is a mechanically-bonded staple fibre geotextile made of polypropylene (PP). This polymer demonstrates high chemical resistance, even to aggressive media such as soils with a high pH value. The geotextile is easy to handle and lay. As a result of its high elasticity it is also extremely flexible without any associated loss in robustness.

BETEX TP fabrics can thus be used to clad even complex shapes to excellent effect. The exceptionally wide range of BETEX TP Non-woven Fabrics allows them to be used in practically all types of application.

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Functionality of BETEX TP Non-woven Fabrics


Separation, filtration and protection are the functions that BETEX TP Non-woven Fabrics perform in earthworks, traffic infrastructure, gardens and landscaping works.


BETEX TP Non-woven Fabrics can be used to separate two different types of soil or unbound sub-base layers from each other. This separating function is extremely important, for example in cases where the subgrade soil must be prevented from mixing with a high-quality sub-base layer.

By separating the layers, the quality of the layer structure can be sustained in the long-term and the useful life of the structure can be optimised. The separating function of the fabric often means that a blinding layer can be omitted.

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The filter function of the non-woven fabric must be tailored to the particular circumstances, depending on the grain mobility within the soil and the influence of water on the layers to be separated. In simple cases, such as those assumed in M Geok E StB 2005 (Leaflet on the use of geosynthetics in earthworks for highway construction), BETEX TP Non-woven Fabrics provide the necessary mechanical and hydraulic filtration.

For more complex applications, the ideal product can be selected from the BETEX TP product range after determining the filter requirements and taking into account the characteristic aperture width, the water permeability and possibly also the filtration length.

In general, the functions of separation and filtration complement each other, and this dual function is often a prerequisite in geotechnical applications.

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The protective function of the fabric can be considered in isolation from the two functions described above. In this case, the purpose is to protect a structure or another functional component, such as a sealing membrane, from mechanical damage. Such protection may be required, for example, when concreting or positioning large-grain mineral construction materials.

Here BETEX TP Non-woven Fabrics provide the necessary protection. They can minimise the effects of point loads and absorb shear forces. Our BETEX TP Non-woven Fabrics are available in various weights to provide the required level of protection for an extremely wide range of applications.

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Areas of application about BETEX TP Non-woven Fabrics


BETEX TP Non-woven Fabrics are used as separating and filtering layers in situations where soil and mineral fill materials need to be effectively separated in order to prevent the migration of particles and the formation of unstable interfaces.

Separation and filtration in traffic infrastructure
Drainage layer for slopes
Separation and filtration layer for drainage systems
Filter layer behind gabions
Separation and filtration layer for green roofs

Advantages of BETEX TP Non-woven Fabrics

The advantages of BETEX TP Non-woven Fabrics

  • Malleable and easy to lay
  • High chemical resistance
  • Robust, to cope with installation conditions on site
  • Easy to cut to size using a cutter or Stanley knife
  • Good mechanical and hydraulic filter properties

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Installation of BETEX TP Non-woven Fabrics

Installation instructions for BETEX TP Non-woven Fabrics

  1. The subsoil should be as flat and even as possible in order to ensure full contact with the fabric across its entire surface.
  2. The fabric must be laid flat and free of creases. Creases resulting from the shape of the structure should be removed by cutting the fabric and allowing it to overlap like roof shingles.
  3. Fill material must be placed on top of the BETEX TP Non-woven Fabrics on the day that the fabric is laid.
  4. When filling and compacting material on top of the fabric, care must be taken to prevent displacement or creasing of the fabric.

    Our detailed installation and laying instructions for BETEX TP Non-woven Fabrics must also be observed.

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BONTEC NW Non-woven Fabrics
BONTEC NW Non-woven Fabrics

Non-woven fabrics belong to a category of construction materials that can influence the function of structural elements and even affect the stability of entire structures. Special applications in civil engineering require some form of differentiation in order to ensure that the right non-woven fabric is selected. ... To the product

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Picture Mr Stefan Bermüller
Mr Stefan Bermüller

Sales Director Geosynthetics

Telephone: +49 (0) 911

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