At the outset, Vention undertook a series of rapid turn-around trials to identify materials with suitable mechanical performance and electrical resistance. The trials identified a polyester-based polyurethane material that yielded excellent electrical resistance; however, the surface finish at a microscopic level was rough, presenting a potential risk of platelet damage.
The Vention team proposed a multilayer tube using a thin layer of smooth, polyether-based polyurethane extruded over the preferred polyester-based polyurethane, which significantly improved surface finish.
During the next phase of the project, Vention used its existing equipment to provide the customer with product for design and process validations. Concurrently, the team collaborated with the customer and suppliers to develop new equipment that allowed Vention to manufacture tubing that met precise specifications at speeds of up to 240 mpm (787 fpm), increasing output and reducing cost. Vention has installed multiple high-speed extrusions lines and will be installing more to further boost production.