Sports wood flooring has a series of key parameters that determine its performance and quality.
The coefficient of friction is one of the important parameters, with a standard range of 0.4-0.7. Within this range, athletes can get the best sports experience. When the coefficient is lower than 0.4, the floor surface is too smooth. When athletes make sudden stops, turns, etc., the friction between the soles and the floor is insufficient, and it is very easy to slip and get injured; when the coefficient is higher than 0.7, the floor is too rough, which will hinder the rapid movement of athletes, increase physical exertion, and may also cause joint injuries due to excessive force.
The impact absorption parameter stipulates that when athletes jump and fall back to the floor, the floor must absorb at least 53% of the impact. For example, in basketball, athletes frequently take off and land. Good impact absorption performance can effectively reduce the impact on the ankle joints, knee joints, spine and other parts, and reduce the risk of sports injuries. This parameter is mainly achieved by structures such as elastic cushions. Elastic cushions of different materials, such as PU, rubber, etc., have different shock absorption effects, but they all need to meet the standard requirements.
Ball rebound parameters, taking basketball court as an example, sports wood flooring must ensure more than 90% ball rebound ability. This means that after hitting the floor, the basketball can rebound to nearly 90% of its falling height. Appropriate ball rebound ability can make basketball more smooth, and athletes can better control the trajectory of the ball and perform operations such as passing and shooting. If the ball rebound ability is too low, the basketball will appear «dead», affecting the sports experience; if it is too high, the movement of the ball will be difficult to control.
The moisture content of the panel is also a key parameter. The moisture content of the panel must not exceed the local equilibrium moisture content, otherwise deformation, cracking and other problems will occur. For example, in the humid southern region, the local equilibrium moisture content is relatively high, and the moisture content of the panel must also match it; while in the dry northern region, the moisture content of the panel must be controlled relatively low. Generally speaking, the moisture content of common sports wood floor panels is between 8% and 13%. In addition, the keel spacing is generally set to 400mm, which can not only ensure sufficient support, but also make the floor have good elasticity to meet sports needs.
