MEDICAL TUBING | MATERIALS


corporate sustainability by decreasing use of PVC in existing products”. While there are many commercial alternatives, such as EVA, TPU, silicones and PEBA, they do not always compete with PVC on every level. For instance, a comparable performance may come at a much higher cost. He said he has seen many cases of PVC replacement failure. In one example, a thick, very low durometer PVC material was used for a vacuum tube. It was thick so that it would resist collapsing. Its softness helped with device handling on long tubing lengths. When the PVC was replaced – and produced with the same inner and outer diameter walls, the part was determined to be too stiff. In a second case, a new material – based on a novel alloy of EVA materials – was developed with the ideal touch/clarity blend. It was used in patient set infusion tubing but failed in a hospital setting due to stretching. “Stretching was not identified as a critical failure


mode,” he said. Rather than simply shunning PVC, he said companies should understand device requirements, manufacturing processes, assembly


techniques and critical failure modes. “Device needs should drive the material selection,” he said. n The Medical Tubing and Catheters conference returns to the US this year and Europe next year. For more details, contact Louella Osano on +44 (0) 117 314 8111 (louella.osano@amiplastics.com).


CLICK ON THE LINKS FOR MORE INFORMATION: � www.osypka.de � www.teleflexmedicaloem.com � www.sis-medical.com � https://mss-global.com � www.puray.de � https://asahi-kasei.eu/ � www.lubrizol.com � www.momentive.com � www.vinylplushealthcare.eu � www.aimplas.es � www.celanese.com � https://kraton.com � https://tekni-plex.com � www.getinge.com � www.evonik.com � https://www.teel.com


CONEXTRU Coextrusion systems stands for individual engineering, easy to operate and maintain, suitable for a wide range of applications.


www.conextru.eu dobrowsk .j@conextru.eu www.conextru.eu | dobrowsky.j@conextru.eu


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