The long glue of table tennis is the rubber whose particles are upward and the height is more than 1.5mm. The rubber particles of the long glue are very soft, slender and have little support, but the ability to make rotation is very poor. When using it, it mainly depends on the rotating impulse of the ball to increase the degree of rotation of the return ball.
The glue surface of table tennis is divided into reverse glue, raw glue, positive glue, long glue, etc. The board is divided into straight board and cross board. The players who cut and rub the ball recommend to use one side of reverse glue and one side of positive glue. The fast break players recommend to use one side of reverse glue and one side of long glue. The effect of double side reverse glue will be better for loop players. When using it, they can choose according to their own characteristics.
Positive glue is the rubber with upward rubber particles and equal height and diameter. It is characterized by good elasticity, fast speed, stable hitting and no turning. It is suitable for use in the near platform fast attack, especially the left push right attack. It is one of the rubber types commonly used by straight board fast attack players.
The raw rubber particles are upward, the diameter is greater than the height, the hitting is sinking, the rubbing rotation is weak, the speed is faster than the normal rubber, but the stability is not as good as the normal rubber, it is difficult to make the rotation, and it is commonly used in backhand of horizontal racket players.
The particle height of the long rubber is high, and the normal rubber and raw rubber are low. The rubber used for the normal rubber has a high degree of vulcanization, while the raw rubber has a low degree of vulcanization.