One Factory, One Partner, Complete Solutions
When you source custom plastic products, the last thing you want is to juggle multiple suppliers for different stages of production. At Ningbo Yinzhou Tuoda Plastic, we believe in simplifying your supply chain. With over 17 years of experience, we offer a true one‑stop solution—from precision mold making to high‑volume injection molding and a full range of secondary operations.
In this post, I’ll walk you through the core manufacturing processes that allow us to deliver finished, market‑ready products directly from our factory floor.
Part 1: Our Injection Molding Capabilities
Injection molding is at the heart of what we do. Over the years, we have mastered a variety of molding techniques to meet diverse product requirements.
1. Conventional High‑Temperature Injection Molding
This is our foundational process. We melt and inject thermoplastics (such as PP, ABS, and PC) into precision‑machined molds under high pressure. The result: consistent, high‑quality parts with tight tolerances. Ideal for everything from consumer goods to industrial components.
2. Overmolding (Two‑Shot Molding)
Overmolding allows us to combine two materials into a single part—typically a rigid plastic base with a soft‑touch TPE or rubber layer. This process is perfect for creating ergonomic handles, sealing rings, or multi‑colored components that feel as good as they look.
3. Insert Molding
For parts that require metal components (such as threaded nuts or electrical contacts), insert molding is the solution. We place the metal insert into the mold before injection, and the plastic bonds around it during the process. The result is a strong, permanent assembly that eliminates the need for secondary fastening.
4. Gas‑Assisted Injection Molding
For large or thick‑walled parts, gas‑assisted molding injects nitrogen gas into the mold during cooling. This creates hollow sections, reducing weight, minimizing warpage, and improving structural strength. It is widely used for handles, automotive components, and large structural parts.
5. Thin‑Wall Molding
When lightweight, material‑saving parts are required, thin‑wall molding delivers. Using high‑speed, high‑pressure injection, we produce parts with very thin walls—ideal for food containers, cups, and packaging where fast cycle times and material efficiency are critical.
6. In‑Mold Labeling (IML) & In‑Mold Decoration (IMD)
For products that demand durable, high‑impact graphics, IML and IMD are game‑changers. We place pre‑printed labels or decorative films into the mold before injection. The plastic bonds with the label during molding, creating a seamless, fade‑resistant surface that won’t peel or scratch.
Part 2: Secondary Operations – From Molded Parts to Finished Products
A part fresh from the mold is often just the beginning. Our comprehensive post‑processing capabilities ensure that your products arrive ready for retail shelves or assembly lines.
1. Deflashing & Trimming
Almost every injection‑molded part requires some degree of flash removal. We use manual trimming, cryogenic deflashing (for rubber components), and CNC trimming to ensure clean, burr‑free edges.
2. Ultrasonic Welding
One of the most common and efficient ways to join plastic components. High‑frequency vibrations create friction heat that bonds parts together in seconds—clean, strong, and without adhesives. Ideal for electronics housings, medical devices, and automotive assemblies.
3. Heat Staking & Insertion
For parts that require metal inserts, we offer heat staking and insertion. Heat softens the plastic around the insert, locking it firmly in place. This is essential for components that need repeated assembly or high mechanical strength.
4. CNC Machining, Drilling & Tapping
Some features—such as fine holes, deep threads, or tight‑tolerance slots—cannot be molded directly. We use post‑mold CNC machining to achieve these precision features, ensuring your parts meet even the most demanding specifications.
5. Spray Painting & Coating
Color, texture, and protection all come from our painting capabilities. We offer:
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High‑gloss / matte finishes for aesthetic appeal
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Soft‑touch coatings for a premium feel
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UV protection for outdoor durability
6. Plating & Vacuum Metallization
For products that require a metallic finish—such as cosmetic packaging or automotive trim—we offer electroplating and vacuum metallization. These processes deliver a brilliant, durable metallic surface without the weight or cost of metal.
7. Laser Marking
When permanent, wear‑resistant identification is needed, laser marking is the answer. We can mark logos, serial numbers, barcodes, and technical data directly onto plastic surfaces with high precision. The marks are fade‑proof and chemical‑resistant.
8. Flocking (Brushing)
For products that require brush surfaces—such as cosmetic applicators, cleaning tools, or industrial brushes—we offer flocking. Using electrostatic or mechanical processes, we implant nylon, PBT, or natural fibers into plastic bases with precision and consistency.
9. Assembly & Packaging
Finally, we bring everything together. Our in‑house assembly services include snap‑fit assembly, screw fastening, adhesive bonding, and complete kitting. Once assembled, we offer a full range of packaging solutions—from poly bags and blister packs to custom‑printed retail boxes—so your products are ready to ship and sell.
Why This Matters for Your Business
When you partner with Tuoda Plastic, you gain:
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Simplified Management: One point of contact, one factory, one quality standard.
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Reduced Lead Times: No waiting for multiple suppliers to coordinate.
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Lower Costs: Eliminate shipping and handling between different vendors.
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Consistent Quality: Every process—from molding to finishing—is controlled under one roof.
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Greater Flexibility: Need a last‑minute change? We can react quickly because everything is in‑house.
Ready to Simplify Your Supply Chain?
Whether you have a finalized 3D file or just a concept sketch, we are here to help. From design for manufacturability (DFM) feedback to mass production and final packaging, we handle every step.
Let’s discuss your next project.
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Email: contact@tuodaplastic.com
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Phone: +86 135 8686 8074
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Location: Ningbo, Zhejiang, China
Stay tuned for more industry insights, material guides, and success stories from our workshop.