Overmolding Services
High-quality custom overmolding services for prototypes and on-demand production parts. Get online quotes, short cycle time and competitive pricing.
- No minimum order quantities
- Rapid Tooling Production as fast as 2 weeks
- ISO 9001:2015 certificated
- 24/7 engineering support
30t-1800t
Instant Quotes
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Surface Finishes
0pc
MOQ
0.025mm
Tolerances
Custom Overmolding Services
The overmolding process involves molding one plastic material over another. This ensures a seamless combination of multiple plastic parts to give a uniform and durable product. Insert molding and multi-shot molding processes help combine materials for functional and aesthetic purposes. GCH’s plastic injection overmolding uses these processes to ensure every component meets industrial standards.
Improved Design and Creation of Custom Plastic Parts: Overmolding capabilities ensure the creation of custom plastic-plastic or metal-plastic product combinations with a high dimensional quality.
Better Product Performance: Overmolded parts are of excellent quality because of their two-material advantage for various applications.
Increased Shelf and Aesthetic Appeal: The overmolding process can be optimized with many materials and surface treatment processes to improve the aesthetic quality of the product.
Better Shock Absorption and Overall Durability: Overmolding also offers improved shock absorption due to the plastic resin addition, ensuring longer shelf life and excellent resistance against impacts.
Lower Production Costs: Since overmolding eliminates post-assembly phase of production, it speeds up the production process and reduces overall manufacturing cost.
Overmolding from Prototyping to Production
GCH applies strict quality standards to every plastic injection mold, ensuring consistency and quality for molded components. Our experts work with you from prototyping through production to optimize rapid tooling for prototypes and production parts. Every step of our mold production showcases our commitment to quality and customer satisfaction.
Rapid Tooling
Get easy design feedback and validation through superior quality prototype tooling. Create small batches of plastic molded parts with excellent injection molding prototypes. We excel at manufacturing prototype molds within days to ensure you perform functional tests and validate market interest.
Production Tooling
We create high-quality production molds for high-volume plastic parts production. With high-strength, durable tool steel material, our production tooling is suitable for producing hundreds of thousands of parts. We can vary materials and construction methods according to your unique requirements.
GCH Overmolding Capabilities
GCH’s custom overmolding services ensure the creation of plastic parts that look and perform better. Our production line consists of an overmolding injection molding process that allows us to combine several different materials into one, ensuring you get superior-quality products.
| Standards | Metric Units | Imperial Units |
| Maximum Part Size | 200×400×100mm | 7.87×15.75×3.94in. |
| Minimum Part Size | 2×2×2mm | 0.08×0.08×0.08in. |
| Substrate Wall Thickness | From 0.5 to 3mm | From 0.20 to 0.12 in. |
| Tolerance | +/- 0.025 mm | +/- 0.00098 in. |
| Radii | 0.1mm | 0.0039in. |
| Depth | 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: 15-45 business days |
Materials for Overmolding
GCH’s overmolding service incorporates choosing the right materials, ranging from thermoplastics to exotic resins. There are multiple possible combinations of overmolding materials and substrates. Here are some of the most common materials we use for the plastic overmolding process.
Tooling Materials
Before the overmolding process starts low or high-volume production, a high-tolerance CNC machined tooling is needed. Most commonly used materials include:
Tool Steel: P20, H13, S7, NAK80, S136, S136H, 718, 718H, 738
Stainless Steel:
420, NAK80, S136, 316L, 316, 301, 303, 304
Aluminum: 6061, 5052, 7075
Stainless Steel
Plastic injection molding service comes with a wide range of materials with different properties, including impact strength, rigidity, thermal resistance, chemical resistance, etc.
| ABS | Nylon (PA) | PC | PVC |
| PU | PMMA | PP | PEEK |
| PE | HDPE | PS | POM |
Additives and Fibers
Standard plastic materials may not meet custom injection molding parts requirement. In this case, additives and fibers can be added to improve aesthetic and functional properties, providing additional features for your injection molded parts.
| UV absorbers | Colorants |
| Flame retardants | Glass fibers |
| Plasticizers |
Surface Finishes for Plastic Injection Molding
Improve the surface quality of your plastic injection molded parts with superior surface finishing options. GCH provides an extensive list of surface treatments to improve the aesthetic appeal of your products. These efficient secondary operations also improve the mechanical qualities of prototypes and production parts.
Applications of Overmolding
The injection overmolding process is compatible with a wide variety of materials, ranging from plastics to metals. This process helps produce custom prototypes and production parts for various applications depending on your requirements. Several industries find valuable uses for overmolding services.
Gallery of Overmolded Parts
Why Choose GCH
We take an approach that aims to meet your customized needs. We aim to provide long-term prototype overmolding solutions to engineering experts and project managers from design to production. GCH combines cost-effective mold tooling with tech-driven overmolding services that help to make high-quality parts.
No MOQ
No minimum order requirement helps move plastic molded parts from design to production in a fast turnaround and supports your on-demand molding manufacturing needs with reduced injection molding cost.
Tight Tolerance and High Quality
Our plastic injection molding process includes vital design considerations to improve moldability and enhance aesthetic appearance. GCH delivers plastic injection molded parts of varying sizes and complexities. Our standard tolerances are defined by ISO 2768 standards, helping us meet tight tolerance requirements.
High Efficiency
With certified domestic factories and a strong supply chain system, we accelerate the product development cycle and bridge the production of your injection molded parts as fast as possible.
Injection Molding Specialists
Working with our experts having 10+ years of experience in the injection molding industry, efficiently complete a turnaround from prototyping to production.
How Custom Injection Molding Works?
The injection molding process involves feeding raw plastic materials into an injection molding machine, melting them down, and then injecting them into an aluminum or steel mold. Upon cooling, a production-grade thermoplastic part is formed and ejected for further use or assembly.
Gallery of Plastic Injection Molded Parts
Dive into GCH’s extensive gallery that showcases some of our completed injection molded parts and take confidence that we can create your injection molding project according to your strict specifications.
The FAQ
Frequently Asked Questions
Tolerances are crucial in injection molding; without proper specification and control, assembly issues can arise. At GCH, we adhere to the ISO 2068-c standard for molding tolerances, but can accommodate tighter specifications if needed.
We have no minimum order requirement. However, larger quantities will yield more competitive pricing.
Once an order is placed, mold design and creation typically take around 35 days, with an additional 3-5 days for the production of the molded parts.
The cost of our services varies based on several factors such as component size, mold complexity, number of cavities, material type, and post-processing requirements. We provide quotes after analyzing these factors on our platform.
At GCH, we offer a wide range of thermoplastic and thermosetting materials suitable for various applications. Some common materials include ABS, Polycarbonate, Polypropylene, and TPE. For a full list of materials or custom material requests, please contact our customer service.
Yes, GCH offers rapid prototyping services. This allows you to test and verify your design before committing to large-scale production.
