Thermoplastic elastomers can be transmission laser welded using near infrared (NIR) absorbing materials as a mechanism to produce heat and localised melting. NIR absorbers generate much less colour than carbon black and so are ideal for medical applications where the use of transparent materials is required. An example of such an application is laser weldable medical tubes made from TPU with NIR additives. This paper will discuss the advantages of laser welding luer connectors to the ends of the tube and will compare the results of laser welding with conventional joining methods like adhesive bonding. Data will be provided to demonstrate opportunities, such as reduced joint area and welding time, which are created using this unique product development. The quality of laser welding achieved allows optimization of the luer design, while reducing assembly time significantly. This new technology eliminates the need for solvents and adhesives required by most medical in assembly operations currently in the medical market place.
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