Overmolding Services

What is overmolding?

Tool handle housing, overmolded by Norck

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

Lockheed Martin
Nucor Insulated Panel Group
Sumitomo Electric Interconnect Products
Saint-Gobain Performance Plastics Pampus GmbH
3M
FritoLay
Parker Hannifin Corporation
Lear Corporation
Boston Scientific
General Dynamics – OTS Canada
Land O'Lakes
ITW Food Equipment
KLA-Tencor
Fastenal
Volvo Construction Equipment
Saft Batteries
Hemlock Semiconductor

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.

How is it fabricated?

Electrical connector with strain relief, overmolded by Norck

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.

What are the advantages of overmolding?

Rugged electronics case, overmolded by Norck

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

WHAT DO OUR CUSTOMERS SAY?

“The services were excellent; my needs were addressed effectively, I expect this custom blade to be preferred and to be reordered in the future.”

John McKennaKalwall Corporation

“We finally made the first test, and it was great. The cut is exactly what we were looking for.”

Meccatronic Engineering

“I’ve received excellent advice to resolve the issues that popped up after the first prototype. Absolutely satisfied. I don’t see anything to improve at this point and believe this is the start of a long collaboration.”

Tomas HeinGELATIN

“We needed a reliable partner that could deliver high-quality parts quickly – and Norck did just that. The delivery was spot-on, and the team at University of Stavanger was really pleased with the result. Great job!”

Pål Svanes, CEOStamas Solutions AS

“I am satisfied with the whole process. The products allowed us to test samples at a reasonable price, and the engineering services were excellent.”

Vivien Gatard, PhD – Engineer, Hydrogen SystemsH2 Pulse

“Overall, we are satisfied with your products—they work well and are made exactly as per the drawings with all the details. Your engineering services are at a high level.”

Ing. Alexander HanuskaAHAtech s.r.o.

“The Norck team did a great job, and I got the parts before I expected. They were very responsive, and we ended up with a great solution.”

Denver 3D Printing

“When things work this smoothly, and you know you’ll get fast, knowledgeable support whenever you need it, there’s no reason to look elsewhere.”

Ernesto SantomauroMeccanica Noschese SRL

“Our collaboration with Norck has been excellent. From the start, it was clear that they genuinely cared about understanding our unique needs and delivering solutions tailored to our requirements. We are incredibly satisfied with the quality of the products and the professionalism of the team.”

The Vita Group

“The first view was OK. We are happy with results. The knives cut well, and our customers are happy.”

PPH Krystian Technologies

“We have installed these new blades in December and are super happy with the results. Thank you for providing these to us, we really needed them for our machine.”

Matthew MacFarlane

“They're not just a supplier; they're an extension of our team. Their dedication to quality, precision, and customer satisfaction is second to none. We're confident that with Norck by our side, we can bring our innovative designs to life and achieve even greater success.”

Philip Madden

Commitment to Quality Standards

Norck is certified with the ISO 9001:2015 quality management system, showcasing its dedication to excellence. Key aspects include:

International Standards: Ensuring all processes align with globally recognized quality benchmarks.

Customer-Centric Approach: Prioritizing customer satisfaction through consistent and reliable service.

Continuous Improvement: Emphasizing the optimization of operations and workflows.

Operational Excellence: Maintaining efficiency and reliability in all activities.

This certification reflects Norck’s ongoing commitment to quality and performance.

On Demand Manufacturing Services by Norck

Norck: Your Data-Driven Partner for On-Demand Manufacturing Excellence

Handle with soft-touch grip, overmolded by Norck

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.
Online Overmolding Services: Norck's online overmolding services provide a fast, easy, and reliable way to bring your ideas to life with high quality, custom made parts.
Overmolding Services Near You: Your search for overmolding services ends here. Norck offers tailored engineering and manufacturing support that begin with your unique project needs. Whether you're a local business or searching online, our expert team delivers top-quality, customized overmolding solutions to bring your designs to life.

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

Frequently Asked Questions

1. What are overmolding services and how does the process work?

Overmolding services are used to manufacture a single component by molding one material over another. The process is carried out using customer-supplied CAD files or technical drawings to produce parts that meet project specifications. If your design is ready, you can request a quote with your project details.

2. Why choose overmolding services for manufacturing projects?

Overmolding services are a practical solution for manufacturing components that require multiple materials in one finished part. Using approved CAD files or technical drawings, the process supports production according to customer design and manufacturing requirements.

3. What is overmolding used for?

Overmolding is used to manufacture custom components based on customer-supplied CAD files or technical drawings. It supports the production of parts designed to meet specific project and manufacturing requirements.

4. How do I choose the right overmolding company?

When selecting an overmolding company, choose a manufacturing partner that can review your CAD files or technical drawings and evaluate your project requirements. Providing complete project information helps ensure the most appropriate manufacturing solution and an accurate quotation.

5. What information is required to request overmolding services?

To request a quotation for overmolding services, submit your CAD files or technical drawings along with your material requirements, quantities, and project specifications. Providing complete project information helps Norck review your manufacturing requirements and prepare an accurate quotation. If your design is ready, you can request a quote by submitting your project details.