Hoenle Adhesives: New CMR-free adhesives

For the production of medical wearables, Hoenle Adhesives has also developed UV adhesives that are CMR-free and formulated without IBOA. IBOA is an adhesion-promoting monomer that has been linked to cases of skin irritation in humans. IBOA-free adhesives can reduce health risks for both manufacturers and users of wearables. The development of a new generation of adhesives with TPO/CMR-free compositions was the primary goal of Hoenle Adhesives. It was expected that this could lead to a loss of some adhesive properties, as CMR-free raw materials are only available in limited quantities. However, after extensive laboratory testing, most of the newly developed adhesives were found to have the same or higher bond strength and elasticity than the original products. New adhesives with double the benefits! For example, the new Vitralit E-7041 T from Hoenle is an excellent adhesive for needle bonding. It is free from TPO/CMR and IBOA. Compared to the original Vitralit 7041 T adhesive, Vitralit E-7041-T achieved a 100 % higher bond strength for PP/stainless steel joints and a 9 % higher bond strength for PC/PC joints. Another strong product for bonding glass syringes, Hoenle's Vitralit E-4050, achieved 320% higher bond strength than the original Vitralit 4050 adhesive when bonding glass to stainless steel. These improved adhesives are just two examples from Hoenle's new medical product portfolio.

Medical adhesives from Hoenle revised

Optimum curing in the medical device manufacturing process can be achieved by combining these new adhesives with Hoenle's UV/LED curing systems. Regardless of whether the adhesive is cured manually or in an automated process, Hoenle offers the best curing equipment for the application. In anticipation of the changes mandated by the EU regarding permitted substances in adhesives, Hoenle has decided to rigorously revise its current medical portfolio to make it future-proof. In addition to regulatory compliance, experience and feedback from our long-standing customers has led to a growing list of undesirable ingredients. Our updated adhesives portfolio for the medical device industry therefore includes TPO-free, IBOA-free and overall CMR-free products, all based on proven, durable and established adhesives whose quality has been proven in various medical applications in the market. This paves the way for the provision of future-proof and sustainable adhesives, taking into account current regulations and expected changes. We are therefore confident that we can continue to offer customized solutions and meet the demanding requirements of the market in close cooperation with our customers.