Abstract
This chapter presents three case studies: dynamic climbing ropes, blood bag, and ultra high molecular weight polyethylene (UHMWPE) for hip joint implants. The first one on climbing rope illustrates the technology of fiber production and rope construction to meet specific mechanical property targets. There are some similarities between rope and the much smaller scale braided sutures used in surgery. The blood bag case study illustrates the use of polymeric film as a flexible container. It considers the permeability of polymers, plus processes for fabricating plastics film. Plasticized PVC has dominated the market for years, but there could be a changeover to flexible polyolefin films. The case study on replacement joints for implanting in the body illustrates wear and the effects of wear debris. Research continues on improving the wear resistance of the UHMWPE and mitigating the effects of sterilization on the implant properties.
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