Unscrewing Closure Molds
Unscrewing cap Closure Molds
Good at Custom Unscrewing Closure Molds

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Unscrewing Caps Closure Molds are designed with detailed threads which cannot be ejected using bump-off methods. When these parts are molded they must be unscrewed from the mold to avoid thread damage. DFmold has developed proven designs for unscrewing molds with optimized cooling allowing short cycle times.

We have worked with a range of approaches including rotating stipper rings instead of cores on unscrewing gear boxes system and we have innovative patented approaches to actuate core rotation or to rotate cavities instead of cores. All of these patented alternatives for rotation can be custom tailored within the range of technologies that DFmold offers to a particular application.

DFmold has built a large number of unscrewing closure molds for high cavitations for a design that is decades old, including up to 128 cavities. Our design is well proven to have excellent cooling while maintaining a good water seal on the threading cores.


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