Certifications: IATF16949:2016 | ISO9001:2015
Although in some cases Prototool may recommend you choose our factory’s two-color injection molding technology to complete your particular products, we may also recommend overmolding if you have loose deadlines and want to reduce costs.
Overmolding is obviously a very mature injection molding process in the market. Our professional staff will provide you advice according to our nearly 10 years of injection molding experience to make your products competitive in the market.
Why Choose Us
How Does Our Overmolding Services Work?
Here is the typical working order to expect when you hire us for our overmolding services:
Find the Best Overmolding Service?
This is where you get it all. Request your free quote today, and enjoy the best overmolding services.
Different Types Of Overmolding Processes
There are different types of overmolding processes, each of which has different applications. Here are some of the most common types of overmolding structures:
Plastic Over Plastic
This involves the molding of a rigid plastic material, which is later overmolded with another rigid plastic. These plastics can be of different colors, structures, and resins.
Rubber Over Plastic
This involves the molding of a rigid plastic material. Once molded, this plastic is then overmolded with soft rubber or TPE.
Plastic Over Metal
First, a metal substrate is machined, cast, or formed. Then, it is inserted into an injection molding tool, and the plastic is molded over or around the metal.
Rubber Over Metal
First, a metal substrate is machined, cast, or formed. Then it is inserted into an injection molding tool, and the rubber or TPE is molded over or around the metal.
Materials Used for Overmolding
We offer a wide range of materials for overmolding projects, depending upon the geometry, complexity, and requirements of your project. These materials can be divided into three different categories, including:
We offer multiple finishing options to complete the products made with the overmolding process. You can choose from any of the following depending upon your application’s requirements:
Interior, non-cosmetic finish according to the geometry of the mold.
Range of SPI finishes from Grade 3 diamond / high polish to 320 stone low polish. These Finishing options include SPI A-1, SPI A-2, SPI A-3, SPI B-1, SPI B-2, SPI B-3, SPI C-1, SPI C-2, SPI C-3, SPI D-1, SPI D-2, and SPI D-3.
We can install the most commonly used and popular standard inserts in UNF and metric sizes.
As the name suggests, the mold will remain ‘as it is’ – without any secondary texturing or polishing.
Creating textures on the molds so that it shows on the final product. This finishing option includes matte, swirls, patterns, and lines.
Engrave part numbers, designs, logos, or any other specified printing onto your parts.
Application of an ink-based design to the surface.
Painting the surface with standard colors or Pantone matching, including Primer and topcoat. Masking available; EMI (copper) paint.
Overmolding is used to produce customized parts and components for a wide variety of industry applications, including:
Free & Quick
We offer end-to-end specialized overmolding services to meet your specific design requirements.
From design to final fabrication and packaging, our team of experts will work with you every step of the way to create a tailored solution for your exact needs.
With a variety of materials available and the precise capabilities of our equipment and facilities, we offer highly customizable overmolding services for all your project needs.
We give our customers instant access to a technical team with our online quote system. Once a quote is submitted online, you will have a response within 24 hours.
What is Overmolding?
Overmolding refers to the manufacturing process of a single part, which is created using two or more different materials in combination with each other. Typically the first material, sometimes called the substrate, is partially or fully covered by subsequent materials, sometimes called the overmold materials, during the manufacturing process. It is when one thermoplastic material is molded over another material to form one integrated part of high-quality and better resistance.
Benefits of Overmolding
Once the mold is created, it can be used repeatedly to create as many parts as possible, making it highly economical. Moreover, overmolding also reduces assembly and labor costs.
It eliminates the need for the bonding step in the manufacturing process, giving a boost to reliability and consistency.
With double strength of two molded parts, the manufactured part has higher durability and a more solid structure.
Accuracy & Efficiency
In higher volumes, overmolded parts preserve a higher precision and less waste than other manufacturing processes.
Custom overmolding allows the production of parts in multiple thermoplastic materials as required by your project and its application.
Better Surface Quality
Improve the aesthetic, strength, and functionality of the components with a combination of different colors and hardness.
Overmolding is a multi-shot injection molding process that produces a single product from two or more different thermoplastics.
The first “shot” is called the substrate, which is typically the more rigid of the two materials being used and is designed to accept the subsequent shots or overmolds.
Where the substrate is the first material injected into the mold, the overmold is the second. The substrate is designed to accept the overmold onto or around itself. The substrate is typically more rigid than the overmold.
Overmolding refers to the process when plastic is molded over another molded part. The first component is made inside an injection mold, and it is then placed into a second mold to add the over-molded material. On the contrary, Insert molding refers to combining other parts, particularly metal parts, directly into the injection-molded product.
Depending on size and complexity, we take from 4 to 12 weeks generally to complete an overmold project.
Simply upload your product details and/or CAD files, and we will send you a free quotation within 48 hours or even less.
There is no need to worry. You can just provide us with a description, and we can reverse engineer it to reach your product ourselves.