Ball consists of a tire, lining and camera. Cameras are manufactured in factories of rubber products made of butyl or latex, then they are sent to the enterprises of sewing balls. Latex cameras are considered the best, the balls with them are used for official competitions. Latex cameras have better indicators of elasticity, bounce and softness. In most budget balls in the store – the camera is butyl.
Tires are made of synthetic material – polyurethane or polyvinyl chloride. The technology of manufacturing cheap tires is very simple, in the factory the parts of the desired shape are removed from sheet of material, and then they are stitched by hand. Putting inside the camera, and the ball is ready.
There are many more stages in making professional footballs. The process begins by creating a framework that is made from polyester fabric impregnated with latex. The standard shape of the ball is a truncated ecosahedron, so most often the fabric is painted into 20 hexagons and 12 pentagons. They are then stitched together. The resulting workpiece is weighed and the chamber is picked up to it so that together they have a strictly defined mass.
Then a tire and lining are made, also removing the parts of the ball from the source material. Special resistant paint is applied to the outside part of the tire parts. The lining consists of several layers of fabric and artificial materials, its quality will ultimately depend on the ball properties. Ready-made linings and tires can either be stitched or in more expensive models applied to the frame by seamless method.
Now the ball is virtually ready, but it won’t go on sale until a number of checks and calibrations pass. Only a ball that meets all FIFA requirements can be used in official competitions.