Magnets can be broadly classified into
(1) sintered magnets, which are typically produced through pressing, heat treatment and cutting/machining processes.
(2) sheet (rubber) magnets, which are manufactured through rolling and cutting processes.
(3) injection-molded magnets, which are produced by injection molding using molds for injection molding.
Our magnets are manufactured using the process described in (3).

Sintered magnets: Low cost and high magnetic strength; however, dimensional tolerance is relatively loose, complex shapes are difficult to achieve, and post-processing after sintering is required. Sheet (rubber) magnets: Flexible and available only in sheet form, magnetic strength is relatively low, and heat resistance is poor. Injection-molded magnets: Capable of complex shapes and insert molding, with high dimensional accuracy; however, magnetic strength is lower compared with sintered magnets. The magnetic strength and type of magnetic powder can be selected depending on the manufacturing process.

Materials for injection molding are pelletized compounds produced by mixing magnetic powder with a thermoplastic resin as the base resin.

[Thermoplastic materials]

• PA (nylon)
• PPS
• The above are materials handled by our company.

[Magnetic powder type]

The following material types are the main materials we handle.

• Ferrite: Widely used and cost-effective, resistant to corrosion and high-temperature resistance.
• Samarium-Iron-Nitrogen (Sm-Fe-N): Less rare earth elements, high coercivity and excellent corrosion resistance.
• Neodymium: High magnetic strength and high coercivity. Rare earth magnets continue to experience price instability and sustained high prices due to supply concentration in specific producing countries and rising demand from industrial applications.

We purchase the materials from a magnetic material compound manufacturer. We do not produce the materials in-house.

We select materials based on the required magnetic properties, magnetization direction, application, ambient temperature, dimensions and drawings, and other product functional requirements.

We carry out prototypes to determine the product’s form factor. Using our in-house prototype base, we only manufacture the insert mold and perform molding. We can also carry out material prototyping using the above mold, so it is possible to evaluate the actual mechanical strength and performance of molded parts made from your desired material.

We perform post-magnetization; however, we do not carry out surface treatments such as painting or plating.

Generally, the size is described as palm-sized. However, it varies depending on the required magnetization direction, so please contact us for more details.

We do not sell molds externally.