Thermoplastic Injection Overmolding

Custom plastic injection molding technology has come a long way since the process was first introduced, and a number of interesting innovations and options are available to enhance the quality and utility of plastic parts. Aline Components is an industry leader in plastic manufacturing and has kept pace with all of the latest methods and equipment. One of the more recent capabilities that can be introduced into plastic components involves overmolding.


Overmolding is a multi-pass custom plastic injection molding process that creates an initial set of plastic parts that then receive other overmolded elements. Similar to the insert injection molding process, overmolding allows rubber, metal, or two or more different types of thermoplastic material to be incorporated into one piece. For example, in components where ergonomics are desired, one type of thermoplastic, designed for more structural strength, is tooled first. Soft rubberized components can then be overmolded onto the structural component. When the thermoplastic cools, the separate pieces have now been fused into one integral final component.

Overmolding can serve to create a better bond between components without the use of additional fasteners, streamline the assembly and plastic manufacturing process, and give designers more options to make components with better performance and sophistication. The multi-pass custom plastic injection overmolding process allows for color contrasts with new aesthetic possibilities and more methods for electrical, plumbing, and other industries to utilize specific color coding identification methods.

Aline Components has provided clients in New York, New Jersey, Pennsylvania, Delaware and beyond with the finest custom plastic injection molding services and products available anywhere. Using the finest quality thermoplastics and the latest state-of-the-art plastic manufacturing equipment, Aline is able to provide innovation, precision, and reliability. Whether the project requires short runs and fast delivery, rapid prototyping for testing and design, or large production runs of specialized components, Aline is committed to delivering excellent results on time, every time. Contact us today and see how much Aline Components can do for your business.

 Aline Components

At Aline Components, we work with you to determine if insert molding is right for your plastic part or component, and if so, what material is best suited for the application. We take pride in helping our customers obtain the solutions they need for their product or system to perform to the highest level.