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

Materials

PeterWilliam de Oliveira¹  René Hensel¹  Michael Opsölder¹  Karsten Moh¹  Eduard Arzt¹  Dan Yu¹  Dirk Beckelmann¹  Bruno Schäfer¹ 

[1] INM—Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany;

关键词: dry adhesive;    microstructure;    roll-to-roll fabrication;    biomimetics;   

DOI  :  10.3390/ma12010097

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown