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M.R. Mold

Micro Molds

What is a Micro Mold?

Silicone reseal devices and check valvesSilicone reseal devices and check valvesWhen an entire day’s production can fit into the palm of your hand, that's a micro-molded product!

Micro-molded product generally weigh less than a gram.  Molds built for such small parts must be built with precision and skill.  (Within the medical industry there may even be individual parts with multiple "micro" features.)  A successful micro mold project requires not only a highly skilled mold maker, but also precision equipment and molding machines with micro shot capability. In other words, it takes years of experience and the correct equipment to master this entire process.

Punctal plugPunctal plugAt M.R. Mold, we have experience building micro molds for parts with very small geometry. For example, one common part for which we've manufactured micro molds are punctal plugs. This plug increase the eye's tear film and surface moisture to help relieve certain forms of dry eye. Also known as punctum plugs, lacrimal plugs or occluders, these devices often are no larger than a grain of rice. A typical size for this type of part would be .060 long x .040 in diameter, and sometimes even smaller.

In addition, our highly skilled staff have built micro molds for hearing aid components and a number of other micro parts with intricate geometry.