Teapot and kitchenware manufacturing process

Iioka Factory

We want more people to enjoy a life with Nambu tekki.
An integrated production line for making teapots and kitchenware for everyday use.

This is a series of kitchenware that retains the traditional feel, has excellent heat retention, and heats food as if it is wrapped around it. In response to changes in lifestyle, the designs and uses of Nambu tekki are becoming more diverse. The Iioka Factory, which was completed in 1974, has installed an automated molding line to meet the increasing demand for ironware, and boasts the industry's largest production capacity. By streamlining processes and implementing thorough production management, we are able to deliver high-quality products.

Mold making

Sand is tamped into a mold of the same shape as the product to copy the shape and pattern, and a cavity the same as the product is created inside the mold.

Pouring

The iron molten in the melting furnace at approximately 1,500℃ is called molten iron, and this molten iron is poured into the mold until the cavity created in the mold is filled to capacity.

Breaking the mold and removing the mold

When the iron inside the mold has solidified, the mold is broken. Immediately after it is removed, some of the sand from the mold will still remain in the product.

Polishing

When the product is removed from the mold, it will have casting burrs, which are removed with a grinder to give the surface a smooth finish.

Enamel painting

The inside of the teapot is coated with enamel, which has the same properties as glass, as an anti-rust treatment, and then fired at high temperatures.

Coloring

Each piece is hand-colored by our artisans in a variety of colors, from rich traditional colors that accentuate the cast surface to colorful color variations that are highly acclaimed overseas.

Inspection and packaging

Products with a painted surface are packed into boxes only if they pass a final inspection.

Complete

The finished product is then delivered to the customer.
Nambu tekki kettle manufacturing process