| 摘要 |
The present invention relates to a multipurpose floor board for indoor and outdoor sports having shock-absorbing and crack prevention functions which has a superior buffer function on a floor board on which various activities, such as sports, are performed and can minimize the generation and expansion of cracks due to use and aging. The multipurpose floor board includes: an elastic part which is arranged on the upper side of a base part and has a plurality of rubber chips compressed; a sealing part which fills pores of the upper side of the elastic part and performs a sealing function; an urethane part which is made of a semi-hard urethane formed of semi-hard polyurethane formed at the upper layer of the elastic part and a hard urethane formed of hard polyurethane; a bonding part made of a floor primer coated on the upper side of the urethane part; and an acrylic part which is made of acryl combined with the upper side of the urethane part by the coating part, wherein the acrylic part prevents micro-cracks of the surface to enhance durability of the urethane part, the elastic part first prevents surface extension of the cracks of the base part by buffering the pores and rubber chips, and the urethane part second prevents surface extension of the cracks extending from the elastic part to the upper side. Therefore, the multipurpose floor board can enhance a buffering function and durability through different materials and can be utilized in multiple purposes. |
