Plastic Bonded Magnets
Plastic bonded magnets for technical and industrial applications: injection molded, compression bonded and overmolded solutions for complex geometries, functional integration and custom manufacturing.
Plastic Bonded Magnets
Plastic bonded magnets for technical and industrial applications: injection molded, compression bonded and overmolded solutions for complex geometries, functional integration and custom manufacturing.
What are plastic bonded magnets?
I magneti plastic bonded, spesso chiamati semplicemente bonded, sono materiali magnetici ottenuti miscelando polveri magnetiche e polimeri tecnici.
Questa tecnologia consente di realizzare componenti con forme complesse, tolleranze controllate, peso ridotto e grande libertà progettuale, particolarmente adatti per sensoristica, automazione, micromotori, attuatori, elettronica e sistemi integrati.
Plastic bonded magnets, often simply referred to as bonded magnets, are magnetic materials made by mixing magnetic powders with engineering polymers.
This technology makes it possible to produce components with complex geometries, controlled tolerances, low weight and high design freedom. They are particularly suited to applications in sensors, automation, micromotors, actuators, electronics and integrated systems.
At ODB Magneti we develop and supply three main categories of plastic bonded magnets:
- Injection-molded magnets (Made in Italy)
- Pressed magnets
- Overmolded magnets
Plastic bonded magnets are made of magnetic powders (e.g., neodymium or ferrite) bonded in a polymer or epoxy matrix. Depending on the production process, they can be manufactured by injection molding, pressing, or overmolding inserts and components.
Compared to conventional sintered magnets, they offer:
- greater geometric freedom
- lighter components
- integration with technical parts and inserts
- high replicability in production
- solutions that are particularly suited to high volumes and functional parts
The 3 plastic bonded magnet technologies
Each technology meets different requirements in terms of magnetic performance, design flexibility, integration and industrialization costs.
Injection-molded magnets – Made in Italy
Ideal for series production, complex geometries and highly integrated components. They offer extensive design freedom, high repeatability and the possibility to create magnetic parts with additional functions.
Pressed plastic bonded magnets
The right choice when higher magnetic performance is required compared to injection-molded magnets, while retaining the typical advantages of bonded technology. Suitable for parts with higher magnetic density and simpler geometries.
Overmolded magnets
They allow a magnet to be integrated directly into a component. This reduces the number of parts, tolerance stack-ups and the total part count. Ideal when the magnet must become a functional part of the final component.