Water-repellent or waterproof?

Article: Is a nano coating water-repellent or waterproof? How a nano coating works on textiles


What does waterproof mean?

Textiles that are described as waterproof shouldn't leak water at all. Even after a longer stay in the rain, you should stay completely dry under your jacket, for example. This is achieved by using several layers of fabric, one of which has a special  waterproof ePTFE or PU membrane and/or laminate membrane inside. The surface fabric still absorbs water. However, the moisture is not let through.

  •     water must not penetrate the fabric
  •     However, the outer fabric gets wet and therefore heavy




What does water-repellent mean?

Textiles that are water-repellent stay dry on the outside. The fabric does not soak up water. Rain or other liquids roll off the surface. If you stay in the rain for a long time, this effect is retained, but water can penetrate between the individual fibers under constant pressure. Even then, water does not penetrate the fibers (the fabric stays dry), but the moisture can push its way past the fibers and into the interior.

  •     water must not penetrate the fabric
  •     when the water pressure is high, the water gets past the fibers


How does a water-repellent nano coating work?

Unlike a conventional; Conventional impregnations, which lie as a layer on the fabric, encase individual fibres. The aqueous liquid is sprayed and penetrates the fiber. After drying, the nanoparticles remain and coat every single fiber of the yarn.

  •     The fabric remains breathable.
  •     The nano coating is invisible.
  •     The protection remains active after washing.
  •     The fabric is also dirt-repellent.
  •     Suitable for all types of fabric (from delicate silk to outdoor clothing)
  •     OEKO-TEX® certified, skin-friendly and food-safe


When do I need waterproof properties?

If you want to stay dry in continuous rain, you need waterproof shoes. If you just want to be protected if you accidentally step into a puddle, then water-repellent is better for you, as it also has the dirt-repellent effect. But you can't stand in the puddle with it.

  •     Tents, umbrellas and tarpaulins must be waterproof to keep you dry in the long term.

What are the benefits of water repellency?

  •     With water-repellent fabrics, the dirt rolls off with the water. Residual dirt can be easily removed (shoes)
  •     Coloring liquids, such as red wine, are not sucked into the fiber and can be removed without leaving any residue
        (tablecloth, couch, carpet).
  •     Since the fibers do not get wet, mold stains are prevented (awnings, sun sails, tarpaulin, garden cushions).
  •     Water-repellent sprays, such as Nanotol Textile Protector, can be applied to any fabric afterwards.


Tags: textile
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