Each Tangent adhesive is typically available in several viscosity ranges to better match manufacturers’ hub designs and process requirements. Product specific viscosities can also be developed to optimize dispense/cure cycles involving unique hub and well configurations. Tangent adhesives are moisture resistant, and when fully cured, possess dry, tack-free surfaces. The adhesives are specifically formulated to meet USP Class VI and ISO 10993 biocompatibility standards, and are compatible with gamma, EtO, peroxide plasma, and E-Beam sterilization processes. Autoclave sterilization may be possible in limited applications.
Tangent’s needle and syringe assembly adhesives create high strength bonds that deliver consistent performance after sterilization and aging. To achieve maximum pull-strength with hubs molded from low surface energy polymers such as polyethylene and polypropylene, it is necessary to apply surface pre-treatment (corona, plasma, etc.), and/or incorporate annular rings in the hub inner well diameter.
These adhesives are ideal for the high volume production of disposable hypodermic needles, syringes, safety syringes, pen needles, winged infusion sets, and biopsy needles. Solvent-free and single component, Tangent medical device adhesives can be easily and precisely dispensed through stainless steel valves commonly used in device assembly processes. Fluorescing versions of each adhesive are available to enhance automated detection systems that monitor adhesive volume and profile.
View the needle/syringe assembly adhesives listed below for a possible candidate for your application. Please contact Tangent to confirm your product selection and to secure additional application assistance, including samples and process recommendations. In the event that these standard products do not satisfactorily address your performance requirements, Tangent will investigate other solutions that include development of adhesive specifically tailored to the complexity of your application.