Seamless micro embossing of material
Roll-to-roll process for continuous microstructuring
Exhibitors
Description
Market Launch
01 1
Microstructured surfaces have extended functional properties. This can, e.g. reduce the friction of highly stressed components in series production. The structuring is applied by wet chemical etching or ultrashort pulse lasers presently. However, these processes have disadvantages: partially harmful to the environment and imprecise. The laser processes in particular are also expensive and time-consuming.
Scientists at KIT have developed a mechanical roll-to-roll process for the microstructuring of polymer films or nonwovens, which enables continuous surface structuring by milling. The desired embossing pattern is first applied seamlessly to an embossing sleeve using the LIGA process (lithography, electroplating, molding) and a mask. The sleeve is then mounted on a roller and thus serves as embossing tool. Via the unwinder, the material web is led to the preheater and heated to a specific temperature. The pattern is then applied to the material web by the embossing roller with the help of a counter roller. Nonwovens are mechanically loosened and the embossing process is repeated. This enables hierarchical structuring when processing nonwovens. The roll-to-roll process allows different materials to be structured, e.g. thermoplastic nonwovens, standard and technical polymers or high-performance plastic films. This opens up new, diverse areas of possible applications.
The mechanical process is more environmentally friendly than currently used chemical alternatives and can be applied for structure sizes below 5 micrometers. The seamless embossing sleeve allows a continuous embossing pattern without seam imprint. In addition, roll-to-roll embossing is suitable for industrial production.
You can get an overview of this technology at KIT stand. More details can be exchanged individually with the responsible scientific employees of KIT after the industry fair.
Karlsruher Institut für Technologie (KIT)
- Kaiserstr. 12
- 76131 Karlsruhe
- Germany
Contact
- Phone: +49 721608 -0
- Fax: +49 721608 44290
Contact
Karlsruher Institut für Technologie (KIT)
- Kaiserstr. 12
- 76131 Karlsruhe
- Germany
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