Custom Large Part Injection Molding
- In-house mold production to improve efficient and save cost
- Can process a wide range of plastic materials
- Robotics and in-house manufacturerd end-of-arm tooling ensure effcient cycle times
- Additional capabilities inclding bonding, painting, printing, assembly and custom packaging
What Is Large Part Injection Molding?
Large part injection molding is an advanced manufacturing process that enables the production of oversized plastic components with high precision and strength. By injecting molten plastic into large mold cavities under high pressure, we can create durable and complex parts for industries such as automotive, aerospace, construction, and heavy equipment.
As a trusted large-part injection molder, we offer both custom and high-volume production services. With injection molding machines ranging from 90 to 1,000 tons, we’re capable of producing large plastic parts with tight tolerances and consistent quality. Our advanced equipment and strict quality control ensure reliable, cost-efficient manufacturing for projects of any scale.
Large Part Injection Molding Mold Service
| Name | Detail |
|---|---|
| Maximun Size |
78.74in. x 59.05in. x 39.37in. 2000mm x 1500mm x 1000mm |
| Mold Cavities | Single or multi-cavity |
| Mold Life | Unlimited (We will open a new mold if the old one worn out) |
| Mold Storage | Forever (Only damage the mold after your permission) |
| Mold Material | Tool steel, stainless steel, aluminum |
| General Tolerance | Normally +/- 0.008in.(0.2mm) |
| Mold Lead Time | Generally 30~40 days for large part injection molding |
Plastic Molding Large Parts Materials
Large part injection molding service often requires materials that can maintain their properties and structural integrity over larger surface areas and volumes. The typical plastic materials include:
- Polypropylene (PP)
- Polystyrene (PS)
- High-Density Polyethylene (HDPE)
- ABS (Acrylonitrile Butadiene Styrene)
- PA (Nylon)
- POM (Polyoxymethylene)
- PC (Polycarbonate)
- PMMA(Acrylic)
Material Selection for Large Injection-Molded Parts
When working with large parts, picking the right material makes all the difference. The wrong choice can cause warping, shrinkage, or extra costs.
1. Match the material to the part’s strength, flexibility, and resistance.2. Select materials with good flow and stable shrinkage properties.
3. Control weight by using reinforced or lightweight options.
4. Test to confirm strength and surface quality before production.
Injection Molding Large Parts Surface Finishing
| Finish | Description |
|---|---|
| SPI A1 | 6000 grit diamond, surper high glossy finish |
| SPI A2 | 3000 grit diamond, high glossy finish |
| SPI A3 | 1200 grit diamond, normal glossy finish |
| SPI B1 | 600 grit paper, fine semi-glossy finish |
| SPI B2 | 400 grit paper, normal semi-glossy finish |
| SPI B3 | 320 grit paper, normal semi- |
| SPI C1 | 600 grit stone, fine matte finish |
| SPI C2 | 400 grit stone, medium matte finish |
| SPI C3 | 320 grit stone, normal matte finish |
| SPI D1 | Dry blast glass bead, satin textured finish |
| SPI D2 | Dry blast, dull textured finish |
| SPI D3 | Dry blast, rough textured finish |
How Do We Handle Large Part Injection Molding?
Mold Design
Mold Making
Injection Molding
Post-treatment
Examples of Large Plastic Injection Molding Products










Custom Contract Manufacturing Capability
Large Part Injection Molding Advantage
- Precision: Tight tolerances, exact dimensions
- Efficiency: Mass production, low unit cost
- Strength: High durability & load capacity
- Flexibility: Multiple material options
- Complexity: One-piece complex shapes
- Consistency: Stable quality in volume production
Application of Large Injection Molding
- Dashboard Components
- Auto Interior Panels
- Washing Machine Housings
- Refrigerator Doors and Panels
- TV Enclosures
- Large Containers Packaging
- Large Building Materials
- Cable Trays and Conduits
Large Injection Molding Parts in Different Industries
Why Choose Us Large Part Injection Molding Service?
High Precision & Consistent Quality
Fast Turnaround & Flexible Capacity
Expert Engineering Support
One-Stop Prototyping & Small-Batch Solution
One-Stop Injection Molding Solution Manufacturer
From prototyping to full-scale production, we deliver custom plastic and rubber parts with accuracy, efficiency, and minimal waste.
FAQs About Plastic Material Parts
Yes, we specialize in high-volume large part injection moulding, providing custom injection molding solutions for large parts that need to be produced in bulk. Our efficient processes ensure that production runs smoothly at any scale.
Yes. We’ve done many large-part projects. Our experience helps us design molds, avoid issues, and deliver parts you can rely on.

