Foils.
Foils.

Foils and textiles

Foils

The applications of films for packaging, surface protection and for many other applications bring a great need for tailored surface equipment with them. This includes the coating, for example with gas permeation barriers, as well as chemical treatment of surfaces, as is required for the setting of the wetting properties, for adhesion, or for biocompatibility.

Textiles

Especially in the field of technical textiles new process concepts are in high demand. Users are increasingly having a high chemical throughput and simultaneously face growing environmental constraints (e.g. REACH). On this topic, Fraunhofer IGB develops innovative solutions together with industrial companies and textile research institutes.

Here, plasma technology offers a promising approach to equip textiles efficiently and environmentally friendly with desired characteristics - especially water and oil repellent properties.

The conventional, chemical textile finishing often produces harmful by-products or waste products. For example, long fluorocarbon chains are required to equip textiles with oil-repellent (oleophobic) properties. However, molecular fragments of finishing chemicals are released during the finishing process, oder during subsequent washing and re-impregnation. Some of these fragments and their reaction products are toxic and therefore represent a problem.

Plasma treatment of textiles is chemically covalent and therefore works with a minimum use of chemicals.

It makes it possible to apply stable coatings on surfaces. Plasma treatment achieves a high film quality while working at high processing speed.

Poster

"Plasma functionalization of foiles and technical textiles with specific tunable wetting behavior"

Reference Projects

Hydrofichi –

Bio-based hydrophobic and dirt-repellent finish for the substitution of pPerfluorochemicals (PFCs) on textile surfaces with chitosan derivatives

 

The aim of the Hydrofichi project is to modify textile surfaces using renewable raw materials in order to replace environmentally harmful and toxic agents that have been used up to now. For this purpose, a chitosan-based hydrophobic finishing of textiles is being developed.

 

Duration: August 2017 – January 2021