UV adhesive for the encapsulation of flexible PV modules

German company Panacol has developed a UV adhesive specifically for foil lamination of organic (OPV) and perovskite-based (PSC) photovoltaic systems.

The offering is a flexible, hybrid epoxy resin-acrylate adhesive that cures with UV light. Named Vitralit UH 1411, the adhesive specially developed for sealing and bonding flexible PV modules.

The company notes that after application, it can be cured by a combination of UV or visible light and heat, which enables precise curing even in potential shadow zones. Once cured, the hybrid adhesive is resistant to environmental and media influences, as well as being soft and flexible.

High adhesion to all standard barrier foils and films used in the manufacture of flexible photovoltaic modules is a key point according to Panacot. The adhesive strength remains after high exposure to temperature and humidity. The adhesive is  described as being transparent and non-yellowing, to ensure optimum light absorption and a good service life for the PV modules.