Norck: Your Partner for Precision Overmolding Solutions

Norck delivers expert overmolding services, creating robust, integrated components for automotive, medical, electronics, consumer goods, and other demanding industries.

Capabilities for Overmolding Excellence:

• Precision Injection Molding Machines: Accurate substrate positioning, consistent overmolding, and reliable part quality.
• Engineered Materials: Guidance on selecting the ideal substrate and overmold materials for bonding, functionality, and performance in harsh environments.
• Specialized Tooling & Automation: Molds with inserts, slides, or multi-shot capabilities, plus automated handling for complex parts and high-volume production.
• Insert Integration: Pre-treating and securing metal components, sensors, electronics, or other inserts for a strong overmolded bond.
• Assembly & Finishing: Secondary operations to deliver complete, ready-to-use components, streamlining your project management.

Norck's Engineering Edge: It's About Performance, Not Just Plastic

• Design for Manufacturability (DFM): Early collaboration to optimize part and insert geometries for efficient overmolding and robust adhesion.
• Material Science for Success: Matching substrate, overmold, and insert materials for chemical compatibility, thermal expansion, and your application's unique stresses.
• Process Control & Optimization: Fine-tuning injection parameters and cycle times to ensure strong bonds, encapsulation, and consistent outcomes.
• Rigorous Quality Assurance: Dimensional inspection, bond-strength testing, and functional validation to guarantee your overmolded parts meet specifications.

Why Choose Norck for Overmolding?

• Combine Functionalities, Simplify Assembly: Integrate electronics, sensors, structural elements, and more for streamlined, reliable products.
• Superior Durability & Protection: Overmolding provides impact resistance, environmental sealing, and enhanced grip or ergonomics.
• Demanding Industry Expertise: Proven success in sectors where performance is critical, and failure isn't an option.
• Precision for Complex Components: Tight tolerances and intricate features on both the substrate and overmolded elements.
• Your End-to-End Partner: From mold and insert design to final assembly and testing, we provide a single-source solution.

It is a plastic injection molding process that combines multiple plastic materials. The mold for overmolding is made from hardened steel to withstand the pressure and heat of the overmolding process. Overmolding mold is unique compared to insert molding and injection molding mold. The overmolding process is used for high and medium-volume production

Overmolding is used for several purposes, such as:

   • Improving the grip of a component
   • Prevent vibration
   • Add sealing

Overmolding offers many advantages:

• A rigid connection: The injected plastic englobes the insert, which results in a rigid connection between materials
• Accuracy: Overmolding offers tight tolerances, around ±0.05mm.
• More rigid threads: The inserts are added to a plastic part to avoid wearing of threads in plastic material.
• No need for fasteners: There is no need for post-molding operations as the molded parts come off the mold and can have a mirror glass surface, mat color, or texture.
• Low production costs: The production cost is reduced since post-machining operations are reduced or eliminated.

But there are some disadvantages as well:

   - Longer cycle time
   - Higher cost

There are two types of overmolding:

I. Two Shots overmolding:

1. Plastification: The plastic granules are transferred from the hopper to the mold using a rotating screw and molted using heaters.

2. First shot: The screw will advance to increase pressure in the injection chamber to inject the molted plastic into the mold. The two cavities are maintained close until the plastic solidifies

3. Die rotation: After injecting the 1stshot, the Die is opened and rotates until the injected part meets the 2ndshot cavity.

4. Second shot: The mold is closed again, and 2ndmaterial is injected into the mold.

5. Ejection: After the molted plastic solidifies using a cooling circuit, the Die is opened, and the part is ejected via ejector pins.

II. Co-injection molding (2k/3k injection mol):

1. Plastification: The plastic granules are transferred from both hoppers to the mold using a rotating screw and molted using heaters.

2. First material injection: The first material is injected after closing the mold.

3. Second material injection:The second material is injected without opening the mold.

4. Ejection: After the molted plastic solidifies using a cooling circuit, the Die is opened, and the part is ejected via ejector pins. The screws will retreat to prepare for the next injection.

Obtaining a fully functional part might require extra processing for features that can’t be made with the overmolding process, such as taping. The designed part should follow Overmolding and overmolding design guidelines.

Norck is a technology-powered manufacturing leader specializing in CNC machining, 3D printing, sheet metal fabrication, and injection molding. Our intelligent, data-driven approach ensures exceptional quality, optimized costs, and seamless supply chain management for companies worldwide.

Key Services:

• Precision CNC Machining: High-quality custom parts and components.
• Advanced 3D Printing: Rapid prototyping and complex production parts.
• Sheet Metal Fabrication: Custom fabrication solutions across materials.
• Injection Molding: Scalable production for plastic parts.

Why Choose Norck?

• AI-Powered Manufacturing: Data and AI optimize our processes for superior quality, minimized costs, and supply chain visibility
• Vast Production Capacity: Our extensive partner network in Europe and the US guarantees both low and high-volume production.
• End-to-End Expertise: Our team of engineers, data scientists, and product developers ensure design for manufacturability and unparalleled service
• Single-Source Solution: Norck streamlines your supply chain, reduces overhead, enhances purchasing power, and delivers just-in-time results.

Experience the Norck difference. Get a quote fast for your manufacturing needs today!