The fibers of kozo (Broussonetia Kazinoki Sieb) are about 10 mm long. By way of comparison, wood pulp fibers are only 1 mm long. Kozo paper is much more durable than Western paper, retaining its strength even when crumpled or folded. 70% of Sekishu-washi is made from kozo.
The fibers of mitsumata (Edgeworthia chrysantha Lindle) are about 4 mm long. They are slightly less strong than gampi and kozo, but are instead delicate and elastic. The finished mitsumata paper is texturally soft and flexible, with a glossy look. It is well-suited for calligraphy and printing paper.
Using washi made from kozo, mitsumata, and gampi, various types of paper and products are made, including Sekishu-banshi, an Important Intangible Cultural Heritage. Other products include Japanese painting and calligraphy paper, certificate paper, paper for dyed products, envelopes, stationery, postcards, business cards, colored paper, notebooks, and traditional Japanese letter paper.
Using washi made from kozo, mitsumata, and gampi, various types of paper and products are made, including Sekishu-banshi, an Important Intangible Cultural Heritage. Other products include Japanese painting and calligraphy paper, certificate paper, paper for dyed products, envelopes, stationery, postcards, business cards, colored paper, notebooks, and traditional Japanese letter paper.
