Medical syringe needles are produced in very large quantities and to ensure an efficient production process, rapid and reliable needle bonding is essential. In addition to their mechanical bond strength, the adhesives used must allow high-precision production permanent joining and must withstand various sterilization methods. Panacol’s UV light curable Vitralit® adhesives, available from Eurobond Adhesives Ltd, exactly meet these requirements. Vitralit® adhesives are available in various viscosity ranges to perfectly fit the design of the needle hub and fill the gap between the hub and the needle. The material of the hub and needle also affects the choice of the adhesive: Many adhesives are UV-curing, which requires the use of transparent and UV-permeable materials. For materials that block UV light, such as polycarbonate, long-wave LED curable adhesives are recommended. All Vitralit® adhesives recommended for needle bonding are solvent-free and certified USP Class VI and/or ISO 10993 for use in medical equipment. In addition, high needle extraction forces were measured with all needle bonding adhesives even after several sterilization cycles. For visual quality inspection, fluorescent versions of Vitralit® medical grade adhesives are also available.
The choice adhesive requires a matching dispensing system and a UV light curing system for reliable and precise dispensing in a rapid production environment. Eurobond Adhesives are also UK distributors of world leading German UV light manufacturer Hönle AG. Their LED Powerline LC UV light source guarantees high-intensity irradiation for fast curing and very short cycle times. The irradiation time can be precisely selected from a range from 0.01 – 99.99 seconds to match your precise process requirements. Hönle LED Powerline heads have a compact design for easy integration into any production line. The high-intensive, water-cooled LED-UV light source is also suitable for clean room operations.
Eurobond Adhesives have nearly four decades of technical expertise in the adhesives industry. If you wish to discuss your adhesive or manufacturing process requirements with one of our technical team, call us on 01789 773232.