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Piper has been dip molding parts for medical device manufacturers for over four decades. We are very good at it, and have enormous production capability.
Medical dip molding is a sub-process of standard dip molding where a mold (or mandrel) is dipped into a polymer and the part forms on the outside of the mandrel. For medical components made from plastisol, (the thermoplastic liquid polymer,) Piper uses stainless steel mandrels because of their stability. These mandrels are ganged up on a handling rack.
The rack is preheated uniformly, then carefully dipped into the plastisol, using a pre-programmed dip profile, for a specified amount of time. The newly formed parts are then withdrawn from the liquid PVC, again using a pre-programmed withdraw profile, post heated, and then cooled. When cool enough the medical components are stripped off the mandrels.
