Insert Molding is a unique process that combines many materials for a stronger product. Both metal and plastic are combined so a mechanical component has the wear resistance of metal with the flexibility of plastic. This process is used in a wide variety of products and demonstrates the many advances in plastic molding technology.
The Process Explained
Insert molding in itself is a very straight forward process. A specialized mold is loaded with an insert, and molten plastic is then injected into the mold—the plastic partially or fully encapsulates the other component in the mold. Once the mold has reached the appropriate temperature, the mold opens, and the components are separated and thoroughly inspected. After passing inspection, there are several post-molding assembly operations that a company can choose from to meet their products specifications. Often, these secondary options are bonding, micro soldering, circuit testing or die to cut—these options ultimately help reduce a number of adhesives and fasteners are used in the finished product.
Uses
The process of insert molding helps reduce overall cost of part and labor. The overall cost is reduced in a variety of ways such as increasing your product’s reliability and design flexibility. In addition to improving the components, resistance to wear and tear, this unique style of molding reduces the size, weight and time it takes to assemble a traditional insert.
Insert Molding and Overmolding
In contrast, the process of over molding, though slightly similar, molds two or more plastics at the same time within the same product. Depending on your particular product, insert molding may be a better option than over molding. Nonetheless, it is still important to find a company that is knowledge in both processes, if you are truly looking for customized molding.
Things to Remember
No matter which process works best for your product, both insert molding and over molding can be beneficial to your product. First and foremost, both techniques help keep your upfront cost in the reasonable range. Moreover, the use of an insert can help design flexibility and increase resistance just as much as over molding can. Therefore, when choosing a process and a company to provide this service, make sure you consult with a skilled injection molding technician or specialist to create the exact product that you need.
