Have your current suppliers been able to provide you with the critical overmolding and/or insert molding services that you need? Do your overmolded or insert molded parts meet your precise specifications?
Rest assured that quality is never an issue for our customers because it’s always an issue for us.
D&M Plastics has been providing superior injection molding services for 50 years, always striving to be an industry leader and ahead of the curve. In 1993, for example, we became one of America’s first ISO-certified custom injection molders. Today, we’re proud to hold ISO 9001:2015 certified quality management system and ISO 13485:2016 certified quality management system certifications.
We’re also proud to excel at:
Overmolding is the process of adding a second layer of plastic over a premolded plastic part, often referred to as the substrate. Overmolding is usually done with a material that is softer and more flexible than the substrate.
Overmolding is typically used to achieve one or more of the following:
Of note, it is important to ensure that the plastic material for overmolding is chemically compatible with the substrate. When the overmold material does not chemically bond well with the substrate, the two materials can be mechanically bonded by incorporating holes or ribs on the surface of the substrate.
In addition to substrate compatibility, other factors that influence the choice of the overmold material include the thickness of the finished part, as well as physical and aesthetic features such as:
Thermoplastic elastomers (TPE) are commonly used for overmolding. The other commonly used materials may include:
Insert molding and overmolding are similar processes. Just as with overmolding, insert molding is used to give the substrate some additional features that improve its function or properties. Insert molding involves placing a metallic part—such as a bushing, fastener, clip, or pin—into a mold and then injecting plastic so that it surrounds a portion of the metallic part and forms a single unit.
The application for the finished part determines whether insert molding or overmolding is the preferred technique. Both techniques provide the following benefits:
D&M is well equipped for fabricating sophisticated, highly engineered, molded parts with strict tolerances. We have the ability to injection mold parts both horizontally and vertically. D&M has extensive experience with molding high-performance plastics.
We work closely with our customers at every step of manufacturing, from initial design to high-volume production. D&M strives to provide the best service, fastest turnaround times and the highest quality in the industry at competitive prices.
