What is Plastic Injection Molding?
Injection molding is a manufacturing process that consists of filling a metal mold cavity with liquid plastic resin, which then cools and forms a plastic part.
It’s most often used for the manufacturing plastic parts at scale due to its low material waste and low cost per part. It’s an ideal manufacturing process for industries like medical devices, consumer products, and automotive.
Our plastic injection molding process produces custom prototypes and end-use production parts with lead times as fast as 1 day. We use aluminum molds that offer cost-efficient tooling and accelerated manufacturing cycles, and stock about 200 different thermoplastic resins.
Common applications for plastic injection molding:
- low-volume production
- bridge tooling
- pilot runs
- functional testing and prototyping
The key steps in injection molding:
- Clamping: The mold’s two sides are sealed shut under hydraulic pressure.
- Screw Recovery: Plastic material is fed into the barrel and conveyed via rotating screw down the barrel toward the front of the screw. As the material is conveyed it is heated to the specified melt temperature creating the “shot” or volume of material to be injected.
- Injection: Screw is pushed forward injecting the material under very high pressure into the mold.
- Cooling: Water circulated through channels in the mold to remove heat and solidifies the molded part.
- Ejection: The clamp releases, mold opens and part is ejected from the mold.
Industries We Serve
Whether it’s automotive, healthcare, electronics, or consumer goods, our plastic injection molding services are trusted across industries. We handle projects of any complexity and scale, offering a tailored solution to meet your specific needs.
Automotive
Healthcare
Electronics
Our Comprehensive Plastic Injection Molding Services
Experience the DTG Advantage: Our injection molding process combines state-of-the-art technology, stringent quality control, and industry-specific adaptability, offering a superior alternative to standard offerings in the market.
- Other injection molding factories
- Unable to design moulds
- Only provide injection molding
- Complex communication
- Mould issues require back-and-forth communication
- Slow response
- Time-consuming
- Our injection molding service
- One-stop service
- Capable of both injection molding and mould design
- Surface treatment, Assembly & Packaging
- Saving communication and transportation costs
- Quick response
- Cost-effective for customers
- Saves mould costs
Thermoplastic Materials
We have wide selection of more than 100 thermoplastic and thermoset materials. And if you’re looking for alternative material options, check out our guide to resin substitutes for ABS, PC, PP, and other commonly molded plastics.
| ABS | HDPE | PBT | PETG |
| ABS/PC | LCP | PC/PBT | PMMA |
| Acetal | LDPE | PEEK | Polycarbonate |
| Acetal/Delrin | LLDPE | PEI | Polypropylene |
| ETPU | Nylon | PET | …… |
Surface Finish Options
Draft angle requirements will vary by requested finish. Industry standard Mold-Tech finishes are also available. DTG offers any type of SPI surface finish, such as A-1, D-2 or D-3.
| Finish | SPI* standard | Surface Finish Image | Finishing Method | Typical surface roughness Ra (μm) |
| Super High Glossy finish | A-1 |  | Grade #3, 6000 Grit Diamond Buff | 0.012 to 0.025 |
| High Glossy finish | A-2 |  | Grade #6, 3000 Grit Diamond Buff | 0.025 to 0.05 |
| Normal Glossy finish | A-3 |  | Grade #15, 1200 Grit Diamond Buff | 0.05 to 0.10 |
| Fine Semi-glossy finish | B-1 |  | 600 Grit Paper | 0.05 to 0.10 |
| Medium Semi-glossy finish | B-2 |  | 400 Grit Paper | 0.10 to 0.15 |
| Normal Semi-glossy finish | B-3 |  | 320 Grit Paper | 0.28 to 0.32 |
| Fine Matte finish | C-1 |  | 600 Grit Stone | 0.35 to 0.40 |
| Medium Matte finish | C-2 |  | 400 Grit Stone | 0.45 to 0.55 |
| Normal Matte finish | C-3 |  | 320 Grit Stone | 0.63 to 0.70 |
| Satin Textured finish | D-1 |  | Dry Blast Glass Bead #11 | 0.80 to 1.00 |
| Dull Textured finish | D-2 |  | Dry Blast #240 Oxide | 1.00 to 2.80 |
| Rough Textured finish | D-3 |  | Dry Blast #24 Oxide | 3.20 to 18.0 |
| As machined | – | Finished to the machinist’s discretion | 3.20 (with visible machining marks) |
Additional Molding Options Available at DTG
Insert Injection Molding
Insert injection molding is a manufacturing process that incorporates pre-formed inserts, such as metal or plastic components, into a molded part, enhancing strength and functionality.
Overmolding Service
Overmolding injection molding is a technique that combines multiple materials into a single component, enhancing functionality and durability through the application of a second layer over an existing part.
Appliance Injection Molding Service
Appliance injection molding service specializes in producing high-quality, durable plastic parts for various household appliances using advanced injection molding techniques.
Aerospace Injection Molding Service
Aerospace injection molding service offers specialized manufacturing of lightweight, high-performance components for the aerospace industry, ensuring compliance with stringent safety and quality standards.
Rubber Injection Molding Service
Rubber injection molding service provides precise and efficient manufacturing of rubber components using high-pressure injection techniques.
Low-Volume Injection Molding Service
Low-volume injection molding service provides cost-effective production of small quantities of customized plastic parts, ideal for prototyping and niche applications.
China Injection Molding Service
China injection molding service delivers high-quality, cost-efficient manufacturing of plastic components, leveraging advanced technology and extensive industry expertise.
Why Choose DTG Injection Molding Services ?
ISO Certified
ISO Certified
Expertise
Advanced Equipment
Fast delivery
Customer Focus
Our Mold Design Process
For simple parts, product lead times can be reduced to as little as 3 days.Upload your part to see if it qualifies.
01
Requirement Analysis
We start by thoroughly understanding the project requirements, including the part geometry, material properties, production volume, and budget constraints. This initial phase involves close collaboration with the client to gather all necessary information and establish clear design objectives.
02
Conceptual Design
Our team of skilled designers and engineers utilizes advanced CAD software to create conceptual designs based on the project requirements. This phase involves brainstorming innovative solutions and exploring various design options to achieve the desired functionality and manufacturability.
03
Detailed Design
Once the conceptual design is approved, we proceed to the detailed design phase. This stage involves refining the 3D model to incorporate all essential features, such as parting lines, gating systems, cooling channels, and ejection mechanisms. Our designers pay meticulous attention to detail to optimize the mold design for efficiency and performance.
04
Simulation & Analysis
Once the conceptual design is approved, we proceed to the detailed design phase. This stage involves refining the 3D model to incorporate all essential features, such as parting lines, gating systems, cooling channels, and ejection mechanisms. Our designers pay meticulous attention to detail to optimize the mold design for efficiency and performance.
05
Design Review & Optimization
The design undergoes thorough review by our team of experts, where potential issues or areas for improvement are identified and addressed. We collaborate closely with the client to incorporate feedback and make any necessary adjustments to optimize the mold design for manufacturability and functionality.
06
Prototype Development
Upon finalizing the design, we proceed to prototype development to validate the mold’s functionality and performance. This stage involves manufacturing prototype molds and conducting rigorous testing to ensure they meet the client’s requirements and quality standards.
07
Finalization & Production Release
Once the prototypes are successfully tested and approved by the client, we finalize the mold design and release it for full-scale production. Our team closely monitors the manufacturing process to ensure the molds are fabricated to the highest standards and deliver consistent, high-quality parts.
08
Continuous Improvement
At Omni, we are committed to continuous improvement and innovation. We regularly evaluate our mold design process to incorporate the latest technologies, best practices, and customer feedback, ensuring we deliver exceptional results with every project.