Smooth twist caps on bottles and jars require an adequate and symmetrical grip without distortion. For any particular product line and size, a customised grip will always perform best and produce the most reliable results.
At Mecmesin we regularly design and manufacture mandrels for specific closures, and one approach is the convenient split mandrel with a simple screw clamp, for quick application and release. Items such as cosmetics containers can especially have designs that are easy for the hand, but difficult for machine holding, so a modified or custom grip may also be needed for the container. Again, our custom engineering service can provide a suitable fixture design for you.