Multi-cavity molds can be a great way to scale up your manufacturing process, but there are some things you should know about them before designing your mold to get the best results.
While multi-cavity molds and family molds may sound like two different terms for the same thing, they are actually different. Multi-cavity molds have cavities for multiples of a single item, while family molds have cavities for different products of a similar size made from the same material and color. For example, if your product required a left and right hand side to be made from the same material and color, it would be a great candidate for a family mold.
Family molds have some benefits, but there are also downsides to creating different parts in the same mold, like a higher risk of defects. In general, multi-cavity molds are the better option.
Multi-cavity molds have a variety of benefits compared to single molds, including:
Unfortunately, creating a multi-cavity mold isn’t as simple as copying a single mold design multiple times and forcing it into a single piece. The larger and more complex a mold gets, the more opportunities there are for defects to be created.
Here are some ways to create the best multi-cavity mold design and reduce the chances of defects.
Side-action is a great way to add holes to parts on individual molds, but they are more expensive and prone to problems on multi-cavity molds. You may have to get really creative trying to design a multi-cavity mold for a product with holes in it.
There are a wide variety of gate types involved in injection molding, and some are better for multi-cavity molds than others. For example, tab gates (also known as edge gates) are a preferred gate type for multi-cavity molds because of their flexibility and large vestige, while pin-style and hot tip gates are better options for single molds because they can solve challenges with complex part geometries. Part of our mold design process involves finding the optimal gate type and size for the part.
Some materials work much better in multi-cavity molds than others, so selecting the right material is crucial to the success of your mold and the end product. There are thousands of different materials so lean on our expertise to help narrow down the search to find the best resin for your product .
All the details you should pay attention to when creating an individual mold become even more important when creating a multi-cavity mold, because the margin for error is slimmer. When designing the mold, a few things you should pay extra attention to include:
Universal Plastic Mold has been a leading manufacturer of plastic injection molding for more than 50 years. We have the experience you need to create your products, whether you use multi-cavity molds, family molds, or individual molds.Get a quote today by clicking here or calling 1-888-893-1587.