Our plastic magnets (PLAMAG) are used in a wide range of things in our daily lives such as automobiles, home appliances, OA equipment, housing equipment, etc.
Nihon Plamag is a manufacturer and distributor of magnets.
There are many different types of magnets,
but the magnets we make have the following characteristics.
Flexible for complex shapes
High dimensional accuracy
Excellent shock-resistance
Light weight
Integral molding of different materials
Short Lead-time
Prototype to mass-production: We propose tailor-made magnets in accordance with the customer's requirements, which we can make prototypes to mass-production.
- Material optimization: Optimize forming dies and magnets based on our magnetic fields analysis.
- Pursuit of operational efficiency: Reducing processes for better and efficient operation, by molding in one piece with shafts, pressed and resin parts for greater precision.
- Lightweight: With a specific gravity of 3.2-5.4 g/cm3, lighter than sintered magnets.
- High precision: Dimensional accuracy as high as ±0.02 mm for the most demanding applications.
- Complex shapes: As the magnets are produced by injection molding, complex shapes are possible.
- Shock-resistance: Higher elasticity and impact resistance, than sintered magnets.
- Size capability: Ring-shaped magnets with a diameter of 260 mm can be manufactured based on our track record.
- Performance: Heat resistance up to 240℃, water and corrosion resistant specification are also available.
- Our Plants: The products are manufactured and delivered worldwide from our 3 plants in Asia, which are Nagano Plant, Okayama Plant in Japan, and Shenzhen Plant in China.
Our merchandise are plastic magnets (plastic mags) or as they are called bonded magnets and other products such as composite molded products and environmentally friendly magnetic powders.
Rubber mugs
Rubber mugs are generally formed in sheet form and punched out, but they may be manufactured by injection molding to improve yield and reduce costs.
Binders are flexible plastic mags such as EEA as well as PVC.
Integrally molded Shafts
This method is often used for rotating parts.
It reduces cracking and process of bonding in press-fits, which helps to improve product quality.
Integrated resin molding
Integral molding with resin is a good match and is suitable for complex shapes, weight reduction and standardization of magnetic parts.
However, careful selection of the component materials is to be required.
Integral molding with other magnets
We can provide assembly parts using sintered magnets and compression magnets, other than plastic mags.
Rare Metals
Those materials which can be procured in Japan, such as ferrite-based, neodymium-based and samarium-based, are available in all our plants, including one in China.
In addition to isotropic materials, we also specialize in forming magnetic field using anisotropic materials with high magnetic properties.
Rare metals are relatively easy to obtain high magnetic properties and are easy to use, but the demand is expected to increase further in the future due to recent price hikes.
We also recommend considering ferrite materials from cost-efficiency perspective.
Magnet-specific mold
The quality of magnets is significantly influenced by the mold.
We simulate and design the magnetic circuit integrated into the mold, then manufacture it both in-house and externally.
Supports post-forming finishing and assembly
The manufacturing process for plastic molds is straightforward, involving molding to complete the part. However, film gates and similar components require post-processing, including dimensional adjustments to the hundredths of a millimeter (0.01mm) level and assembly with other parts.
180-ton Magnetic Field Shaping Machine
We possess a 180-ton magnetic field forming machine capable of forming in a magnetic field.
For example, it can form large-diameter ring magnets of approximately φ200.
Alternatively, it can produce multiple large molded parts simultaneously.