Bonding Silicone to a PVC Surface

Question: I am working on a prototype that involves bonding a silicone rubber to a pliable pvc surface and have had a difficult time bonding them together. Is there an adhesive you can recommend, that could assist me in this process?Answer: Although I have never attempted to bond/overmold silicone to polyvinyl chloride, I have had good results using other plastics.  Some processing techniques you may wish to consider incorporating into your process, are surface abrasion on the pvc (via sanding/sandblasting), the use of a self-bonding silicone material that contains adhesion promoters within it, the use of plasma treatment prior to the application of the silicone, and lastly, the application of a platinum primer to the substrate.

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About Kevin

Kevin received a Bachelor of Science Degree in Biomedical Engineering from the University of Connecticut in Storrs, CT. He has been with at Albright Technologies, Inc. for over two years where he does development work on silicone medical devices. He lives in Connecticut, with his wife (Megan) and their two dogs (Abby and Ripley).