Custom Overmolding Process

Access 30 years experienced custom overmolding manufacturer for your custom parts. Get exceptional customized overmolding parts with high quality at a competitive price
  • No MOQ
  • Materials: TPE, TPU, ABS, PC, PP
  • Fast molding: 2 weeks
Send us your designs and specifications for a free quotation
All uploaded files are secure and confidential

What is Custom Overmolding Process

What is Custom Overmolding Process
  • Overmolding process is a manufacturing process in which a material is molded onto another material or substrate to create a single integrated part. This process involves using a second material, typically a thermoplastic elastomer (TPE), to cover and bond with a pre-formed part, such as a plastic or metal component.
  • The overmolding process can provide several benefits, including improved grip, cushioning, and durability. Overmolding is often used in the production of consumer goods such as toothbrushes, power tools, and electronic devices.
  • Overmolding can also be used to create multi-material parts with different properties, such as rigid and flexible areas within the same part. This process can be achieved through various methods, including injection molding, insert molding, and two-shot molding

Neway Custom Overmolding Process

We provide the fastest over molding mold-making and free sample delivery service within 15 days. While providing convenience to customers, we also pay attention to the high quality and high-cost effectiveness of the custom over molding parts
Low Volume Overmolidng Process
Low Volume Overmolidng Process
Neway supports low volume production of customized overmolding parts. We save time and money for customers through flexible and fast production and help customers push the custom overmolding projects faster and achieve mass production
Cost Effective Mass Production
Cost Effective Mass Production
We have a complete PDCA system to control all overmolding production, improve the mass production stability of over molding products and reduce production costs, and provide customers with strong market competitiveness for their overall products
Brand Company Trusted
Brand Company Trusted
In 30 years of over molding service, we have won the trust of many well-known companies in the world, It benefits from our excellent quality, fast delivery and competitive price
Competitive Price
Competitive Price
We have developed about 1000 sets of common mold accessories and fixtures for over molding process and provided them to our customers free of charge, which greatly reduces the upfront cost of custom overmolding parts

Overmding Process Workflow

Our custom over-molding service has scientific calculation and strict cost control, which allows us to have a 15-day overmolding molds T0 delivery time and can provide high-quality products
Inquiry and Quotation
After analyzing the specific needs of customers' custom overmolding parts, we offer the best quotation after rigorous calculation and process optimization. More specific requirements can further reduce the cost of products
DFM and Mold Flow Analyzing
Design for manufacturing (DFM) is very important in plastic overmolding manufacturing, It allows us to find defects or concerns beforehand, and provide recommendations for the over molding accessories customization
Prototyping and Rapid Molding
Before creating the plastic over molding molds, we choose to use rapid molding or CNC machining, or 3D printing technology to manufacture the initial prototype to verify the actual feasibility of the over molded parts
Mold Making
We design and manufacture plastic over-molding molds according to the most reasonable over molding process and mold structure. A superb plastic over molding is the premise of providing a high-quality product
Final Sample Confirmation
We verify the feasibility and cost control of custom overmolding parts by the T0 of the final mold. Improve product quality and reduce mass production costs through mold optimization
Trial Production
An experienced overmolding manufacturer will conduct a small batch trial production of the custom over molded parts before mass production, this is to check the stability of the final mold and the consistency of the final product
Mass Production
We continuously optimize the over molding mold structure and production process in mass production to ensure quality while reducing costs, providing customers with stronger market competitiveness
Quality Inspection and Transportation
As a top-notch custom over molded parts factory, Neway keeps full inspection of the overmolding parts. We use the PDCA method to improve the over molding process and guarantee that every over-molded part received by customers is of exceptional quality all the time

Advantages of TPE Overmolding Process

TPE can be used for overmolding process and two-color injection molding. As a soft material, TPE is usually matched with hard materials, mainly plastics and metals. TPE can be used with some commonly used plastics PP, GPPS, HIPS, ABS, and engineering plastics PC, PC/ABS, PA, and its modified materials are firmly bonded.
Advantages of TPE Overmolding Process
  • Good flexibility and elasticity make it suitable for the manufacture of products that require protection, such as mobile phone cases, electronic product cases, handles, etc.
  • Good durability can provide reliable protection performance, making it suitable for manufacturing products that require durability, such as automotive interior parts, outdoor products, etc.
  • Strong oxidation resistance and weather resistance can be used in outdoor environments for a long time without being affected, making it suitable for the manufacture of products that require weather resistance, such as outdoor products, swimming equipment, etc.

Overmolding Process Applications

Overmolding is a plastic injection molding process in which a second material is molded over a substrate material to create a finished product with improved functionality, aesthetics, or durability. Here are some of the common applications of over-molding:
Soft Grip Handles
Seals and Gaskets
Electrical Connectors
Medical Devices
Automotive Parts
Soft Grip Handles
Soft Grip Handles
Overmolding can be used to create soft grip handles for hand-held tools, sporting goods, and electronic devices. The soft material provides a comfortable and slip-resistant grip, while the substrate material provides structural support.

Neway Overmolding Process Capabilities

Neway provides Overmolding process customization service from design to finished product. While providing excellent quality, we can complete the mold production in the fastest 15 days



Max Size


8×8×6 in

Min Size



Min Wall Thickness

0.5 mm

0.02 in.


0.025 mm

0.0008 in.



0.004 in


100mm from the parting line

3.94in. from the parting line

Mold Validation

Provide T0, T1, T2 samples before mass production

Inspection and Certification Options

First Article Inspection, ISO 9001, ISO 13485

Lead Time

From mold making to sample delivery: 15 business days

Secondary operations

Trimming, Assembly, and packaging

Overmolding Materials

Let's Start A New Project Today

Custom Overmolding Parts Gallery

At our custom overmolding parts gallery, we understand that every project is unique. That's why we work closely with our customers to ensure that their custom parts are designed to meet their exact specifications. With our attention to detail and commitment to quality, you can trust that your custom parts will exceed your expectations.

Frequently Asked Questions

Explore Related Resources

Copyright © 2024 Neway Precision Works Ltd.All Rights Reserved.