What Are Overmolded Magnets?

Overmolded magnets are magnetic components that combine a magnetic material with a plastic or other polymer material through mold forming technology. It combines the functionality of traditional magnets with the benefits of plastic materials to form a comprehensive magnetic component that enhances the magnet's functionality and durability and can be customized in shapes and sizes to meet specific application needs.

M8 white rubber wrapped strong ndfeb magnet

The general process of making overmolded magnets;

First, appropriate magnetic materials are selected, generally neodymium magnets are the main ones, and then special molds are designed according to the shape and size requirements of the magnets. Then, the magnetic material is placed into the mold, and the plastic material is wrapped around the surface of the magnetic material through the injection or compression molding process. After the molding is completed, the material in the mold needs to go through a cooling and curing process to ensure that the plastic material is tightly bonded to the magnetic material to form the final product.

Features of overmolded magnets:

Protective magnets: Plastic or rubber material protects magnets from corrosion and physical damage.

Increase safety: The overmolding layer can reduce the safety hazards caused by the sharp edges of the magnet.

Increase Functionality: Threads, snaps, and other structures can be added through overmolding to facilitate the installation and removal of magnets.

Design Flexibility: Various shapes and sizes can be customized according to needs.

Noise reduction: the cladding helps to absorb vibration and reduce noise during operation.

Typical applications for overmolded magnets;

Overmolded magnets are widely used in automotive industry, industrial jigs and fixtures systems, household appliances and electronic devices, outdoor applications, water treatment equipment, etc. The outside covering material can be ABS plastic, pps, PP hard plastic, TPE rubber, etc., with a variety of appearance and color, and the magnetism is available on one side or both sides.

Above is the introduction of the overmolded magnet, I hope the above information is helpful to you!

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