Tatami

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Japanese room Tatami in section

Tatami (Japanese 畳) - a traditional Japanese mat, used to cover the floor. The inner part (tatami-toko) is made of rice straw, and the top layer (tatami-omote) of the double layer of braided straw of iguanas (Juncus effusus L., igusa rush grass). The edges are covered with a strip of colored fabric (tatami-heri). Tatami have standard dimensions of 90 × 180 cm and at the same time serve as a measure of interior space. It also meets semi-tatami with dimensions of 90 × 90 cm. Since the dimensions of the tatami were fixed, the rooms in old Japan had dimensions that were multiples of 90 cm, and the size of the room determined the number of tatami in it: the typical store had an area of ​​5 tatami, the room or chapel for the tea ceremony had a surface area of ​​4 and half a tatami. Most homes in contemporary Japan still have at least one tiled washitsu.

Today, tatami are increasingly being made with plastic additives. Completely artificial tatami are used during martial arts training to protect against the effects of falls. Contemporary tatami used as a base in martial arts training rooms: judo, aikido, ju-jitsu, sometimes also karate, taekwondo and others, are 2 m × 1 m × 4 cm, less than 1 m × 1 m × 4 cm . They are made of polyurethane foam covered with vinyl with the structure of "rice straw". Colors: olive, red, blue, yellow. The density of PU foam (which depends on hardness) varies between 180-260 kg / m³. Soft mattresses are intended for beginners. Mattress is glued with special anti-slip rubber with wafer structure, which makes it impossible to move the mat on the ground.

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