How can basketball be divided into true and false?

There are many kinds of basketball on the market now, with different grades. It is difficult for ordinary people to tell the truth from the false. Sports New Humanity is here to provide some experience and reference for those who are considering buying or are in a depressed state. Structural padding of basketball: The bladder is the heart of basketball, which is located in the innermost layer of basketball and made of black rubber. Yarn winding: At present, middle and high-grade basketball will evenly wind a yarn on the surface of the inner liner to form a cocoon-shaped protective layer of the bladder, but not every basketball adopts this process, and many low-grade basketball do not wrap yarn or use gauze instead. Middle tire: a supporting structure between the inner bladder and the epidermis, made of rubber material. Skin: divided into rubber, synthetic leather (superfine fiber, PU, PVC, etc. ) and dermis. Ball mouth: the passage of basketball inflation, which is very important for air tightness. How to use basketball 1 correctly? After use, clean the surface of the ball (leather basketball should not be wiped with wet cloth to prevent mildew) and store it in a cool and dry place. 2. Pay attention to choose indoor/outdoor basketball with different material series according to different venues. 3, the basketball pressure should be 7-9 kg, otherwise it will affect the feel and be easily deformed. Test method: On the flat and hard ground, make the basketball fall freely from the height of 182CM, and the rebound height is 124- 145CM, which is normal. Venue: General basketball can be used in cement and asphalt venues, while leather and synthetic leather basketball can be used in indoor wooden venues. Why choose a good quality basketball? Using basketball with comfortable feel and stable bouncing and rotating performance will cultivate good dribbling habits and help to make standard and in-place technical movements. Moreover, high-quality basketball can also enhance your self-confidence and improve the quality and fun of training. At the same time, from an economic point of view, a good basketball has a longer service life and better quality and service. Compared with the current middle and high-grade basketball, a layer of yarn will be evenly wound on the surface of the inner liner to form a cocoon-shaped protective layer for the bladder. However, not every kind of basketball adopts this technology, and many low-grade basketball is not wrapped with yarn or replaced with gauze, which directly affects the quality of basketball. The difference between Spalding basketball and ordinary basketball is 1. Inner container: Spalding basketball adopts special butyl rubber inner container, and the raw material is imported raw rubber, which has high purity, less impurities and stable performance. Through the treatment of patented technology and the use of special additives, this kind of liner has unique rebound flexibility and good air tightness. This is the same material as the inner lining of advanced automobile tires. After strict patented technology processing, the bounce is soft and stable, which is the internal source of Spalding basketball's unique and delicate feel. 2. Yarn winding: Spalding only uses special nylon yarn with very good flexibility, which is evenly wound by a precision machine, with a length of 2km, so that the bouncing of basketball is rich in texture, the flying and rotation of the ball are stable and accurate when shooting, and the ball is firm and difficult to deform. ① The yarn winding process adopts specially modified equipment to ensure the accuracy and uniformity of yarn winding angle change; ② Imported high-density nylon wires must be used instead of PE wires to ensure the firmness and toughness of the winding layer; ③ Glue used in yarn winding is also an important link to ensure the quality of finished products. We only use special glue prepared by patented technology. (4) Through long-term practice, we also adopt different winding lengths according to the characteristics of different balls and their use environment, and strive to make each basketball show the best use effect, but the total winding number is controlled between 2200 and 2400. 3. Leather: All genuine Spalding basketballs are made of leather specially supplied by professional manufacturers. For example, both ZIO and ZIO have Spalding patented technology, which has the advantages of anti-slip, wear resistance and absorbing Han. In order to meet different venue requirements and customers' feel habits, Spalding has provided a variety of basketball series with different materials for fans to choose from. Skin: ① Cowhide: It is provided by Ganason, a world-famous leather manufacturer, and is selected from the first layer of natural skin on the back of cattle. It is used to manufacture the top products of Spalding brand basketball series. Spalding basketball emphasizes the touch of ball control, the skin is not sticky when it meets sweat, and the bounce is soft and moderate, which is easy to control. However, it is expensive and difficult to maintain. Only used for indoor wood floors, usually used for professional competitions. This basketball is currently used in NBA professional leagues in the United States. ② ZK superfine fiber: a synthetic material containing "Spalding" patented ingredients. Compared with natural leather, it has the advantages of delicate feel, sweat absorption and anti-slip, wear resistance and mildew resistance, and easy maintenance. Basketball made of it is usually used by professional teams for training and competition. At present, this kind of basketball made of ZK microfiber is used in the official competition of CBA Men's Basketball League and the training of teams in China. ③ PU synthetic leather: With the strengthening of people's awareness of environmental protection, PU synthetic leather is a new material to replace traditional natural cowhide products. Basketball made of it has the advantages of waterproof, wear-resistant, mildew-proof and suitable for indoor and outdoor use. Although it is also called PU synthetic leather, there are many kinds and grades on the market. In order to ensure product quality and prevent counterfeiting, only special PU synthetic leather materials provided by Yantai Leather Factory, the largest leather factory in China, are used. ④ PVC synthetic leather: Although it is slightly inferior to PU synthetic leather in hand feel and low temperature resistance, it is superior to PU synthetic leather in water resistance, wear resistance, mildew resistance and salt and alkali resistance, and it has a price advantage and is economical. It is a very good skin material for indoor and outdoor basketball. Only special PVC synthetic leather materials provided by imported and domestic professional leather factories are used. ⑤ Synthetic rubber: "Spalding" has a patented double-layer synthetic rubber production process, which has leather-like feel and excellent waterproof, wear-resistant, mildew-proof and salt-alkali resistance, and is the best outdoor popular basketball leather material. Through traditional technology, high-quality Spalding synthetic rubber basketball has changed people's one-sided view that rubber basketball is a low-grade inferior ball. 4. Tire: The manufacturing process of the intermediate tire between the inner bladder and the outer skin plays an important role in the overall performance of basketball. Spalding's special manufacturing technology of middle tire makes the middle tire play a good role in control, support and transition. 5. Ball nozzle: Different from other kinds of balls, it has a unique structure and assembly method, and has the advantages of air leakage prevention, waterproof and replaceable. 6. Feel: Spalding's basketball has excellent comprehensive feel. It has been established for 130 years and contains many legends. NBA superstars give it a unique feel with mystery and trust. Even when they make free throws at the crucial moment of the game, they are very particular about the direction and position of the LOGO on basketball, which must not be changed. 7. Check whether the free needle and net are complete. 8. Check whether the retailer has the designated dealer certificate and signboard specially issued by Shanghai Katsu Hoshi Sporting Goods Co., Ltd. 9. If you are not sure of the authenticity, you can call Spalding China general agent Shanghai Katsu Hoshi Sporting Goods Co., Ltd. for consultation. How to tell whether Spalding's basketball is true or false? 1. Scrape off the unique authentication code of 16 on the product certificate, send SMS or log on to the website for authentication. (Product certificate with authentication code has been used since August 2004) 2. Look for Bohr Spalding's trademark. 3, check the overall production process. 4, check the bounce, girth, rotation center, ball technology and comprehensive feel.