LABELLING PETplanet Insider Vol. 26 No. 09/25 www.petpla.net 21 HERMA introduces wash-off adhesives certifi ed for PET and HDPE packaging recycling Wash-off adhesives supporting sustainable packaging For PET and HDPE packaging choosing a suitable wash-off label is often the key to ensuring that a material can be recycled to a high standard. HERMA’s portfolio of wash-off self-adhesive materials have been developed and certified precisely for this purpose. The adhesive 72Hpw has been developed for use in plastics recycling, where it is intended to enable labels to separate from packaging made of PET and HDPE. “Our selfadhesive materials are developed so that they reliably enable labels to be separated from the appropriate packaging,” explains Dr Stefan Kissling, Head of Adhesive and Special Coatings at HERMA. “This is a key prerequisite for a closed plastics cycle.” Wash-off performance in PET and HDPE Independent testing by the CyclosHTP institute has certified the adhesive’s wash-off properties in multiple applications. For HDPE packaging, 72Hpw has been certified in combination with five different label materials, and it can be removed even in coldwash conditions. For PET packaging, twelve combinations with various label substrates, including paper, PE, and PP films, have been certified for recycling streams covering transparent PET bottles, other PET bottles, and PET trays. Additional assessments have been carried out by other organisations. RecyClass issued a letter of compatibility for one self-adhesive material, while the Dutch institute KIDV (Verpact) gave a positive evaluation of two PP films in connection with HDPE recycling. LABELLING Labels made from wash-off selfadhesive materials make HDPE and PET packaging a sought-after source of recycled material. (Image source: Bet_Noire / iStock) Here‘s where to find our Vision Inspection Systems Visit us IMD booth A5-130 Husky booth C5-421 Engel booth C6-140 Sumitomo Demag booth C6-160 PackSys Global booth C6-340 Netstal booth C6-361 Wittman Battenfeld booth C6-501 Availability and applications HERMA states that it is among the few suppliers currently offering certified wash-off label materials for both PET and HDPE packaging. Further products are still undergoing certification. The company also indicates that the 72Hpw adhesive is priced in line with standard adhesives and that many certified materials are stocked in common widths, which allows for relatively quick implementation by label printers and packaging users. HERMA will present its expanded portfolio of certified wash-off selfadhesive materials for the first time at Labelexpo in Barcelona. www.herma.com
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