Project presentations on the website

Every project supported by Gebert Rüf Stiftung is made accessible with a web presentation that informs about the core data of the project. With this public presentation, the foundation publishes the funding results achieved and contributes to the communication of science to society.




Für den Inhalt der Angaben zeichnet die Projektleitung verantwortlich.


Dieses von der Gebert Rüf Stiftung geförderte Projekt wird von folgenden weiteren Projektpartnern mitgetragen: ETH Zürich; European Outdoor Group; Rotauf

Project data

  • Project no: GRS-048/17 
  • Amount of funding: CHF 200'000 
  • Approved: 15.01.2018 
  • Duration: 05.2018 - 03.2020 
  • Area of activity:  Pilotprojekte, 1998 - 2018

Project management

Project description

Being outside, even in the rain, is fun. More and more people want to experience nature as closely as possible. Proper equipment and clothing is fundamental for enjoyable outdoor sports. One large part is functional (i.e. waterproof and breathable) membranes, applied in rain jackets, tents and shoes. Nowadays functional clothing is made from laminates. A 2D membrane is produced, a glue is added and the membrane is laminated to a woven fabric. Outdoor brands buy the rolled laminate, cut it according to their design and have it tailored into clothing. Finally, the seams are covered with a waterproof but non-breathable tape. The seam taping accounts for about 40% of the assembly costs, causes defects to about 10% of the produced clothing and leads to about 12% loss in breathable area. We propose a novel approach to omit the taping.
Instead of producing a flat area of membrane, which is forced into a 3D shape by tailoring, we apply a liquid membrane precursor and directly form a 3D membrane. Our membrane process works with hard template particles, which are mixed into a polymer-solution. This precursor solution is applied on a substrate, the solvent is removed and the template particles are removed. A fully porous polymer membrane is obtained. A natural fatty acid, introduced into the pores as a coating on the template particles, introduces waterproofing into the pores.
In this project we investigated the application of the liquid precursor on a 3D substrate. The project will be continued to generate the first 3D membrane in clothing. The successful application reduces waste, cost in the assembly and greatly increases the wearers comfort.

What is special about the project?

This project covered the exploration of 3D membranes for outdoor clothing applications. The breakthrough invention will be the assembly of functional 3D membranes. A jacket, shoes or gloves will be produced and the functional membrane would be added later in its complete shape. Multiple issues of the current assembly will be omitted and clothing without using neither a glue nor a DWR (dureable water repellent) will be possible. This increases the functionality and therefore allows more activity without getting wet.
Furthermore, the specific way of assembly might allow local design and creation in the stores of the clothing brands.


Industrial scaling was successfully achieved in the project. The first laminates at full scaled width are being tested in the lab and in test collections. Along the scaling and testing it was established, that spraying membranes on the 3D fabric is the most promising option. The project will be continued with large partners in order to bring first 3D membranes to the customers.




Persons involved in the project

Dr. Mario Stucki, Projektleiter
Dr. Anna Beltzung, Projektmitarbeiterin
Lucile Menand, Projektmitarbeiterin
Sofia Erikson, Projektmitarbeiterin

Last update to this project presentation  28.06.2023