The specification parameters of standard-sized PVC baseball usually conform to the basic norms of baseball. At the same time, in combination with the characteristics of PVC material, the following is a detailed description of its main specification parameters:
First, size and specification
Diameter: The diameter of a standard PVC baseball is generally between 7.2 and 7.3 centimeters, which is similar to that of a traditional baseball, ensuring the stability and predictability of the baseball during flight and hitting.
Circumference: Calculated by diameter, the circumference of a standard PVC baseball is approximately between 22.6 cm and 22.9 cm, which is also the commonly used size standard in baseball.
Second, weight specifications
Weight: The weight of a standard PVC baseball is usually between 140 and 150 grams. This weight range not only ensures the stability of the baseball during flight but also enables the batter to swing the bat and hit it easily.
Third, materials and structure
The outer layer material: The outer layer of a PVC baseball is usually made of PVC material, which has properties such as wear resistance, water resistance, and chemical corrosion resistance, ensuring that the baseball maintains good performance in various environments.
Core material: The core of a PVC baseball may be made of cork, rubber or similar substances to provide appropriate elasticity and resilience. The material and structure of the inner core have a significant impact on the flight performance and hitting feel of the baseball.
Sewing process: PVC baseballs usually adopt the sewing process to tightly wrap the outer layer material around the inner core, forming a complete sphere. The quality of the sewing process directly affects the durability and performance of the baseball.
Fourth, other specification parameters
Color: The color of PVC baseball may vary depending on the manufacturer and the purpose, but it is usually in eye-catching colors such as white or yellow to facilitate identification and tracking during the game.
Surface treatment: To enhance the friction and grip of the baseball, the surface of the PVC baseball may undergo special treatments, such as adding textures or coatings, etc.