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Materials 2019, 12(1), 97; https://doi.org/10.3390/ma12010097

Roll-to-Roll Manufacturing of Micropatterned Adhesives by Template Compression

1
INM—Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
2
Department of Materials Science and Engineering, Saarland University, 66123 Saarbrücken, Germany
*
Author to whom correspondence should be addressed.
Received: 23 November 2018 / Revised: 19 December 2018 / Accepted: 21 December 2018 / Published: 29 December 2018
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Abstract

For the next generation of handling systems, reversible adhesion enabled by micropatterned dry adhesives exhibits high potential. The versatility of polymeric micropatterns in handling objects made from various materials has been demonstrated by several groups. However, specimens reported in most studies have been restricted to the laboratory scale. Upscaling the size and quantity of micropatterned adhesives is the next step to enable successful technology transfer. Towards this aim, we introduce a continuous roll-to-roll replication process for fabrication of high-performance, mushroom-shaped micropatterned dry adhesives. The micropatterns were made from UV-curable polyurethane acrylates. To ensure the integrity of the complex structure during the fabrication process, flexible templates were used. The compression between the template and the wet prepolymer coating was investigated to optimize replication results without structural failures, and hence, to improve adhesion. As a result, we obtained micropatterned adhesive tapes, 10 cm in width and several meters in length, with adhesion strength about 250 kPa to glass, suitable for a wide range of applications. View Full-Text
Keywords: dry adhesive; microstructure; roll-to-roll fabrication; biomimetics dry adhesive; microstructure; roll-to-roll fabrication; biomimetics
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Yu, D.; Beckelmann, D.; Opsölder, M.; Schäfer, B.; Moh, K.; Hensel, R.; De Oliveira, P.W.; Arzt, E. Roll-to-Roll Manufacturing of Micropatterned Adhesives by Template Compression. Materials 2019, 12, 97.

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