In modern table tennis, there are five basic types of rubber
backside soft anti spin grass without sponges grass with a sponge Backside
Backside consists of a spongy substrate and rubber with pimples turned and glued to sponge. The outer surface of rubber is smooth, which basic characteristic is acceptability or coefficient of friction. The efficiency of this rubber depends on the thickness and hardness of the sponge. There are three main groups of backside rubber extremely acceptable rubber (fast), medium fast and slow. Very acceptable rubber is used in tangential strokes, or strokes with rotation. They are used by defending players in combination with a thin sponge because of the possibility of easier control of balls.
Soft is made of sponge and rubber affixed to the sponge which has pimples outward. Compared to ordinary rubber with pimples that were previously much more used, thanks to the sponge soft had an advantage and was significantly faster and the ball was better controlled. The basic attribute of soft rubber is that it is very quick and relatively little acceptable because of the small surface of pimples. Thanks to its low acceptability it is not very sensitive to the rotation. It is particularly suitable for fast attacking style without a lot of spins, and for the defensive style of play. It is used by players which are playing penholder style, attackers who play closer to the table. The intent of players who play with a soft rubber is to speed up the game, to make a backhand faster and unsettling.
Anti-spin is made of sponge and rubber with pimples facing the sponge, which is smooth outward. The outer layer of rubber is made of a material with a low coefficient of friction, so it is not acceptable. Initially, anti-spin was used for a defensive style of play, and later, because of its characteristics, has become an important concept in the offensive game. Almost all attackers are putting anti-spin rubber on the backhand. When playing backhand many attackers turn their racquet so that in one point they play backhand with backside and anti-spin that causes difficulties for opponents due to changes in rhythm and rotating balls.
Grass (with or without sponge)
The grass is rubber with long outward pimples that is attached to a spongy surface, or directly to a wood. The maximum allowed the length of pimples on the grass is 1.8 mm, with which is difficult to control the ball and the grass with shorter pimples (1.5 mm) has good control and weaker effect of this type of rubber For defense are used a defensive version of grasses, which have a relatively slow spongy surface, while for offensive grass are used faster sponges. The grass is elusive and it is not possible to give a stronger rotation because of its long pimples. The main role of grasses in the game is to facilitate the return of rotation of the opponent and to return the counter rotation. Rejected ball of grass has an irregular flight due to catapult effect of pimples which further interferes game of the opponent.