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Roll-to-roll hot embossing allows micro patterning of flexible foil-based polymer substrates. Using rolls instead of plates enables continuous molding with significant advantages in operational speed and device throughput. In roll-to-roll hot embossing a thermoplastic sheet passes between two rotating rollers. The deformation of the thermoplastic material under the pressure and elevated temperature of the mold imprints the structures into the polymer. Imprinting also allows the creation of 3-dimensional and asperhical structures in one
step which additionally lowers the number of required process steps.
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Detailed Specs
The EVG750® R2R hot embossing system is based on EVG’s extensive experience in batch-type hot embossing. Using rolls, instead of plates, the EVG750R2R enables continuous moulding with significant advantages in operational speed and device throughput. The system is especially well suited for structuring fine features in the sub-micron to nanometer scale. Furthermore, the technology implies advantages over mainstream reshaping technologies such as injection moulding if structured thin films are required. The EVG750R2R’s innovative design provides excellent temperature and pressure uniformity for micro- and nanoscale patterning on a broad range of materials. In addition, the EVG750R2R enables roll-to-roll patterning on exotic materials that are not available on large rolls. It is designed to deliver the highest flexibility for R&D applications with a clear vision for automated mass manufacturing of flexible devices.
