Explaining Common Types of Injection Molding Value Added Services and When to Use Them
Injection molding is one of the best manufacturing processes for producing consistent and repeatable plastic components. However, while plastic injection molding creates the foundational part geometry, many projects require additional operations before components are ready for assembly, distribution, and eventual end use. This is where injection molding value added services are the perfect solution.
Value-added services are often used to enhance a product’s functionality, finish, and readiness for final use. At Metro Plastics, we offer these solutions in-house to help customers streamline operations, reduce lead times, improve quality control, and lower overhead.
If you’re unsure which secondary services make the most sense for your project, check out our helpful guide. For more personalized guidance, contact our team. When you partner with us, you’ll see firsthand the quality and engineering standards that have made us a top plastic injection molding company since 1975.
Common Injection Molding Value Added Services
With consumer goods, agriculture, food and beverage, lawn and garden, and other sectors with specialized demands, value added solutions are usually needed to meet specific performance, compliance, and end-use standards.
CNC Machining & Routing
CNC machining is commonly used to refine molded plastic components and achieve tolerances that may not be attainable through molding alone. At Metro Plastics, we use advanced machining tools to create accurate, repeatable modifications across large-volume production runs. Our capabilities include:
- Drilling to create holes and openings
- Sanding to achieve smooth surfaces
- Grinding to refine edges, remove excess material, and improve dimensions
- Punching to produce clean cutouts and holes
- Tooling to support custom setups and requirements
- Welding to combine plastic parts into durable assemblies
In addition to traditional machining methods, we provide CNC routing as an efficient solution, creating complex contours, cutouts, and custom-tailored designs.
Fabrication
Fabrication is the process of cutting, shaping, bonding, or assembling plastic materials into finished parts. Below is a deeper look at the fabrication methods our team at Metro Plastics offers:
- Thermoforming: We heat a plastic sheet until it becomes pliable and then form it over a mold to create the desired shape.
- Die cutting: We use specialized tools to cut plastic materials into precise shapes. This is often what we use for gaskets, spacers, and seals.
- Solvent welding: We permanently bond plastic pieces by softening the material surfaces and creating a molecular-level connection.
Cut-to-Size & Laser Cutting
Many projects require plastic materials to be supplied in exact dimensions before assembly or further processing. Our cut-to-size solutions make certain that components are delivered according to precise specifications. Laser cutting further enhances accuracy by using focused energy to create clean, intricate cuts with minimal material waste.
Drape Forming & Vacuum Forming
Drape forming involves heating a plastic sheet and allowing it to drape over a mold. Gravity and controlled forming methods help the material conform to the mold surface while preserving optical clarity and material characteristics. Vacuum forming, on the other hand, involves the use of heat and vacuum pressure to pull a plastic sheet tightly against a mold. The vacuum removes trapped air, allowing the material to accurately replicate the mold geometry.
When to Use Injection Molding Value Added Services
Not sure when to use injection molding value added services? Metro Plastics is here to break it down.
New Product Launches
Launching a new product often involves coordinating multiple manufacturing stages, suppliers, and production schedules. Integrating injection molding value added services with a single manufacturing partner like Metro Plastics can significantly simplify this process.
Complex Multi-Component Products
Products consisting of multiple plastic components can call for additional processing, assembly preparation, or specialized finishing operations. Value-added services are used to avoid assembly errors and streamline workflows by consolidating multiple operations into a more efficient process.
Reducing Total Manufacturing Costs
Although individual secondary processes may add manufacturing steps, they frequently reduce overall project costs when evaluated across the entire supply chain. Integrated value-added services can reduce shipping between vendors, lower handling costs, and minimize administrative overhead.
Working with a U.S.-based injection molding company can also reduce transportation expenses compared to overseas manufacturing arrangements. Domestic production shortens supply chains, decreases logistics complexity, and offers greater transparency throughout the manufacturing process.
Scaling Production Volumes
As demand increases, manufacturers need processes that can support higher output without sacrificing quality. When machining, fabrication, cutting, and forming are available through a single supplier, scaling becomes easier while process control remains intact.
Contact Metro Plastics for Value Added Services & More
From CNC machining and routing to fabrication, laser cutting, drape forming, and vacuum forming, injection molding value added services provide manufacturers with valuable tools for business across various industries. Whether you are introducing a new product, managing a complex assembly, aiming to cut manufacturing costs, or are looking to scale, the right secondary services can create measurable advantages throughout the manufacturing lifecycle.
Metro Plastics combines injection molding expertise with comprehensive value-added capabilities to help customers streamline operations and achieve their production objectives. Contact us today to learn more about our injection molding value added services and discuss your next project with our experienced professionals.

