The categories include basketball, volleyball and football.
The structure is divided into two kinds: skeleton layer and skeleton layer. The skeleton layer is composed of balloon, skeleton layer and rubber skin. The skeletonless layer consists of a bulb and a rubber skin. The balls can be latex or rubber balls. The skeleton layer plays the role of fixing the sphere, keeping the roundness and size of the sphere, without deformation due to inflation. It can choose fine canvas, market cloth, synthetic fiber cloth or synthetic fiber wire winding.
It is characterized by rubber instead of leather, which makes the ball cheap and durable. The rubber ball has the advantages of good air tightness, soft feel and no skid, good wear resistance and good bounce.
Rubber ball skin can be made into a smooth or various patterns according to its use. Rubber skin is generally made of natural rubber, butadiene rubber or styrene butadiene rubber, and high styrene or thermoplastic resin, etc., through rubber mixing, pulping, rubber rubbing, covering cloth, inflatable shaping, covering skin, vulcanization and other processes. Used in sports. Store in a cool place away from direct sunlight. Pay attention not to stress, avoid contact with acid, alkali, oil, etc., to prevent touching the benefits.
