Classification, characteristics and application scope of sports flooring
Sports flooring has a history of more than 100 years in Europe and 70 years in Southeast Asia. Its superior performance and environmental protection have generally replaced ceramic tiles and wooden floors in developed countries and become the first choice for ground materials. It entered my country in the 1990s and has become popular in the southeast coast and developed cities. Sports floor is a kind of floor specially developed for sports venues using polyvinyl chloride materials. Specifically, it uses polyvinyl chloride and its copolymer resin as the main raw material, adding fillers, plasticizers, stabilizers, colorants and other auxiliary materials. Sheet-shaped continuous substrates are produced by coating process or by calendering, extrusion or extrusion process.
Sports floor classification
Sports flooring is divided into indoor sports flooring and outdoor sports flooring. Indoor sports flooring generally includes professional sports wooden flooring, PVC plastic sports flooring, acrylic (polyurethane) sports flooring, rubber flooring, etc. It is generally laminated by a multilayer structure, generally including a wear-resistant layer (including UV treatment), glass fiber layer, elastic foam layer, base layer, etc.
Technical characteristics of sports floor:
The surface of the professional PVC plastic sports floor can be moderately deformed when it is impacted, just like a sealed mattress with air inside. When you fall or slip, the cushioning effect provided by the closed foam backing technology can maximize Reduce sports injuries.
The problem of tremor
Tremor refers to the range of floor deformation due to impact. The larger the tremor range, the more likely it is to cause fractures. There are two types of tremor: point tremor and regional tremor.
Vibration absorption problem
The impulse formed by people during exercise will produce vibration on the surface of the PVC plastic sports floor. The structure of the floor must have the function of shock absorption, which means that the floor should have the performance of absorbing impact energy. The reaction of athletes on the sports floor The impact force is much smaller than the movement on hard ground, such as concrete ground. That is: when an athlete jumps and falls to the floor, at least 53% of the impact must be absorbed by the floor, so as to protect the athlete's ankle joint, meniscus, spinal cord, and brain, so that people will not be affected during exercise. hurt. Its protection function also considers that one person cannot affect neighboring people when moving on the sports floor. This is the concept of shock absorption, shock deformation and extension deformation described in the German DIN standard.
Friction coefficient problem
Studies have shown that 12% of basketball players are injured in the course of rotation. The coefficient of friction of the sports floor indicates whether the floor is too frictional (which reduces the flexibility of rotation) or is too slippery (which increases the risk of slipping). Taking into account the athlete's mobility and safety, the coefficient of friction between 0.4-0.7 should be the best value. The coefficient of friction of PVC plastic sports flooring is generally maintained between this coefficient. The friction coefficient of professional Wanao PVC plastic sports flooring is 0.57. It has sufficient and moderate friction, which can ensure the stability of movement, and at the same time Maintain the consistency and regularity of the friction performance in the moving direction to ensure flexible movement and in-situ rotation without any hindrance.
Ball rebound problem
The rebound test of the ball is to drop a basketball from a height of 6.6 feet onto the sports floor to test the rebound height of the basketball. This data is expressed as a percentage, and the rebound height of the basketball on the concrete floor is used as the comparison standard to reflect the rebound height difference. The rules of indoor ball games require that the ground is used for sports competitions or training, such as basketball and other ball sports such as the take-off action and the rebound of the ball, and the rebound comparison coefficient of the ball on the ground of the competition field should be greater than or equal to 90%.
Energy return problem
This refers to the sports energy returned by the PVC plastic sports floor when athletes exercise to improve sports performance.
Rolling load problem
The load-bearing load, firmness, and service life of professional sports floors must meet the requirements of competition and training. For example, when the movable basketball hoop and related sports facilities move on the floor, the surface and structure of the floor cannot be damaged. This is the German DIN standard Rolling load standards and concepts described.
Application scope of sports floor:
PVC plastic sports flooring is widely used in various sports venues, such as: badminton, table tennis, volleyball, tennis, basketball, handball, indoor football competition and training venues, multi-functional venues, various gyms, dance rooms, schools, unit unions Activity rooms, multi-function halls, amusement parks, kindergartens, sporting goods stores, offices, hotels, hospitals, etc. In recent years, PVC plastic sports flooring has been widely used. In the Olympic Games and other international competitions, PVC plastic sports flooring is used. It can be seen that the market prospect of this kind of flooring is very broad.