YAMAMOTO material is made in ISO13485 certified factories in Japan. The process of making rubber is similar to the one of making bread. Let’s explore how YAMAMOTO is made.

Mix dough

Mix Limestone CR with a big mixing machine. Rubber viscosity and dispersion are checked.

Let it rest overnight...

Let it rest overnight to stabilize the properties.

Mix carbon black

Mix the dough with carbon black and other ingredients for better strength and durability.

Let it rest overnight...

Let it rest one more night to stabilize the properties.

Mix edible oil

Make it soft and flexible with food-grade “Tempura” oil for sustainability and safety.

Purify the dough

Remove any impurities from the dough for better quality.

Shape it

Shape the dough into sheets. Inspect every sheet in size, thickness, and weight.

Bake sheets

Bake the sheets with heat and pressure to make tiny bubbles evenly.

Trim edges

Remove edges quickly and beautifully.

Bake sheets again

Bake the sheets again to finish flexible, warm, and durable YAMAMOTO material.

Slice sheets

Slice the sheets into any thickness according to customers’ requests. An experienced staff checks the thickness.

Inspect sheets

Inspect the sheets carefully before shipping.

Ship sheets

YAMAMOTO rubber sheets are shipped to customers around the world to become your second skin.