1. Use security.
Many consumers are reluctant to choose PVC products, mainly worried about his chemical composition of polyvinyl chloride (PVC). There is actually a misunderstanding here: because as a polymer, PVC products are very stable and will not endanger human health; The threat to the human body is those residual monomers that are not polymerized during the polymerization process. We call it “vinyl chloride (VCM)”, and the residual vinyl chloride monomer in the PVC raw material is difficult to remove in the subsequent production process of the professional interlocking wood indoor basketball sport surface. Therefore, the choice of raw materials for the sports flooring factory directly affects the residual amount of vinyl chloride monomer in the sports floor. At the time of purchase, the hospital may require the manufacturer to issue a test report issued by the national testing center according to GB18586-2001 "Limited Hazardous Substances in PVC Flooring". The impurity of "vinyl chloride monomer" is preferably "undetected." ". GB5761 requires a VCM residue of less than 10 ppm in polyvinyl chloride. (Purchase requirements for imported Fudas flooring in the Czech Republic are less than 1ppm)
2. The thickness of the wear layer.
The prefabricated interlocking indoor tennis court has two thickness indicators: one is the total thickness; the other is the thickness of the uppermost transparent pure PVC layer, also called the “wear layer thickness”. The thickness of the wear layer directly affects the service life of the product, the cost of the product, and the aesthetics of the product. The thicker the wear layer, the higher the product cost and the better the quality (rather than the thicker the total thickness, the better). Some manufacturers make the total thickness of the product very thick, but the wear layer is very thin, in fact, in order to save costs and steal the concept. The ultra-thick wear-resistant layer is especially suitable for laying in areas with high traffic, such as hospitals, schools, office buildings and factories.
In recent years, with the application of sports flooring in some hospitals in China, consumers have become more rational when they choose. Many top three hospitals clearly stipulate in the tender: the floor that is required to be purchased should be a multi-layer composite compact sports floor for European and American brands. The total thickness of the product is 2.0mm, and the wear layer is not less than 0.7mm. This conclusion is the experience summarized from the actual case. When purchasing sports flooring products, the hospital may require manufacturers to provide a report on the thickness of the wear layer issued by the national testing center. In Europe and the United States, there are also corresponding detection methods that are characterized by excellent wear resistance, such as abrasion resistance test (European EN660-1). This test simulates the wear condition of the ground material under daily use. The measurement result is measured in mm, which means that the product has been tested. The thickness of the wear", the smaller the value, the higher the wear resistance of the material. According to the European EN649 wear test standard, elastic PVC flooring with different degrees of wear can be divided into 4 different wear levels: T: wear degree 0.08ram (T grade is the highest possible multi-layer composite sports floor) Rating); P grade: 0.0 8 ITl m < wear degree 0.15ram (P grade is the highest rating that can be achieved with homogeneous core sports flooring); M grade: 0.1 5 1TI iTI < wear degree 0. 30ram; Class F: 0.3 0 Ffl m < wear degree 0.60ram.
In addition, there are many hidden conditions that affect the quality and final cost of the interlocking elastic flat PP mat sport flooring. At the time of purchase, the hospital must shop around. Do not only choose the color and price. It is necessary to combine the indicators to select the most suitable product.