Rosti
Overmolding and Insert Molding
Rosti delivers advanced overmolding and insert molding solutions that enhance part performance, design flexibility and structural integrity
By combining multiple materials or integrating metal inserts directly during molding, we create robust, lightweight components with improved grip, sealing, electrical functionality, or mechanical strength. With extensive experience across automotive, consumer goods, and industrial applications, Rosti provides scalable, high-precision multi-shot molding supported by in-house engineering, tooling, and fully automated production.
Tony Austin
European Technical Director
Materials Knowledge
When choosing a partner for overmolding & insert molding, you’ll want to consider their material knowledge. With so many different materials being used, Rosti’s deep knowledge of each of their characteristics is what sets us apart.
Overmolding
Overmolding is a valuable technology for producing products that stand the test of time. Rosti helps you manufacture items that feel better and last longer.
With small modifications, you can make big changes. Some examples of how are below:
- Make an item, such as a car key or toothbrush, easier to grip or give it a more pleasant feel. This can be purely for aesthetic reasons or to improve your product’s sustainability by incorporating post-consumer recycled (PCR) resins.
- Transform a delicate item into something durable and more solid.
- Create a barrier against dust and water.
- Seal using a flexible elastomer.
All of these changes require a thorough understanding of the materials you are working with to make sure you achieve the best end result for the customer.
Insert Molding
For over a decade, Rosti has delivered insert molding components to customers. Over the years, we have improved the process to produce millions of parts in a fully automated system. We’ve accomplished this by leveraging our extensive technical expertise and have even been awarded patents for some of our facilities operating in a “lights-out” manner.
Our ability to utilize robotics systems and automation, led by a team of highly skilled engineers and technicians, enables us to deliver extremely precise results for our customers. It’s one of the many reasons why Rosti is a cost-effective, world-class manufacturer of high-volume plastic injection molded parts.
Solving Complex Manufacturing Challenges
At Rosti, we are accustomed to complex manufacturing challenges. One such challenge involved manufacturing and molding three different components to create a single desired part, including a permeable mesh.
We were able to take advantage of back-to-back machine systems, robotics, and our years of plastic injection molding technical expertise. With high-speed automation, we delivered a final product that met all specifications and exceeded expectations.
This level of technical proficiency and experience allowed us to solve this problem with accuracy and care, and continue our position as a global market leader, meeting customer demands in a cost-effective manner.
Enhance Your Products with Rosti’s Overmolding and Insert Molding Services
When properly executed, overmolding is a dependable way to enhance, protect, or decorate your product. If you are considering overmolding for your products, Rosti is here to help. With our expertise in the industry and dedication to quality, we can help you make informed decisions about materials and processes to maximize both functionality and appearance. Don’t hesitate to contact us to discuss your overmolding needs and explore how our services can benefit your business.
Our experienced engineers and service personnel are dedicated partners who identify design, development, production, and cost efficiencies so we can provide the highest level of service and value to our customers before we even cut any steel.
“Overmolding is an excellent way to add value
and functionality to your product,
but it’s not as straightforward as it might seem.”
