Adhesives for Needle and Syringe Assembly
Tangent Industries has developed a series of LED light curable adhesives that are ideally suited for bonding stainless steel cannula into hubs of various substrates and configurations. Tangent’s LEDcure family of adhesives are products that fully cure in fractions of a second under low intensity UV/visible or visible light. This provides manufacturers with the ability to select more economical curing systems for their assembly process, including those based on LED technology.
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.
|Product Number||Suitable Applications||Viscosity cP mPa||Shore Durometer||24 Hour Water Absorbtion||LEDcure||Bondable Substrates||Comments/Features||Request
|glass assembly||600-900||D75-85||< 1.0%||yes||glass, ceramic, metals, some plastics||UV/Visible cure, low intensity curable, clear, RI@ 25°C=1.511%|
|needle/syringe assembly||50-150||D70-80||< 3.0%||yes||stainless steel, polycarbonate, PVC, treated polypropylene/HDPE||UV/Visible cure, low intensity curable, clear, moisture resistant, generates highest tensile strength with LED curing equipment, tack-free|
|bonding/potting rigid plastics||10-150||D80-90||< 1.0%||yes||PC, PVC, polyester, other rigid plastics||UV/Visible cure, secondary thermal cure, low intensity curable, wicking grade viscosity, withstands autoclaving, very hard, clear, suitable for medical device assembly|
|bonding needles, syringes, stylets, and catheters||450 – 600||D 50 – 65||< 4.0%||Yes||olycarbonate, PVC, styrene, polyester, stainless steel, ceramic, glass||well suited for bonding polycarbonate, PVC, styrene, and polyester, as well as dissimilar materials including stainless steel, ceramic and glass|
|reservoir assembly/plastics bonding||3000-5000||D45-55||< 5.0%||yes||PC, ABS, PVC, polyester||UV/Visible cure, clear, moisture resistant, flexible, tack-free, suitable for medical device assembly|
*Note: viscosity variations are typically available, or can be formulated, for all listed products. Please inquire with Tangent Applications Engineering for viscosity ranges not shown in the table.
Contact Tangent Industries for more info.