Table tennis semi long half raw rubber is different from raw rubber

The difference between table tennis semi-long and semi-raw rubber and raw rubber is as follows:

1.The definition is different:

Half-length rubber: It is a kind of rubber used in table tennis rackets, which belongs to the surface covering of table tennis rackets.

Raw rubber: It is a polymer material with unique high elasticity, which is the parent material for the manufacture of rubber products, and generally refers to the unvulcanized rubber rubber.

2.Features are different:

Half-length rubber: It is characterized by a long rubber sheet, with the rubber particles facing downward, and the particle height decreasing from the back to the front.

Raw rubber: its vulcanization degree is low, elastic is large, the speed is fast, and the potential energy of the ball is partially converted into the potential energy required for the lodging of the rubber particles.

1. Different properties: raw rubber is a unique polymer material with high elasticity, which is the parent material for the manufacture of rubber products, and generally refers to unvulcanized rubber compounds. Semi-long rubber is the rubber used in table tennis rackets, which is between long rubber and raw rubber.

2. The characteristics are different: the near-neutral liquid flowing out of the rubber tree is made into latex by adding ammonia (which can be stored for a short time). The semi-long rubber particles are shorter and coarse, and the speed is very fast, close to the speed of raw rubber, and the attack power is very strong.

3. The principle is different: most of the raw rubber latex needs to be processed into dry rubber. The ratio of particle height to diameter of half-length glue is less than 1.

The difference between raw rubber and long rubber is that the particles of long rubber are fine and long, while raw rubber is relatively short. Raw rubber can have a certain amount of friction, while long rubber can't. They have different principles of shots.

The length of semi-long rubber is between long rubber and raw rubber, and the playing method is basically the same as that of long rubber. At present, the long rubber raw rubber is a Chinese elimination play (the old traditional way of playing), and professional athletes have almost no active players who use the above rubber, and they will reverse the rubber arc circle fast attack on both sides. Some chippers still use long glue, but very rarely.

The hardness is different, and the particle size is also different. The particles of raw rubber are relatively hard, and the particles of semi-long rubber can be less soft. The feeling of hitting the ball is more elastic, and the semi-long rubber is a little floaty, but it is not as difficult to control as the long glue.

There is a big difference between raw rubber and long rubber.

1. The particle height of long glue with different forms is high; Positive rubber and raw rubber are shorter. The degree of vulcanization of raw rubber is low.

2. Rotation of different raw rubber has a certain manufacturing and rotation ability. The manufacturing and rotation ability of the long rubber decreases in turn, and the outer long rubber has anti-rotation performance, which is simply to rub out the upper rotation and play the lower rotation. Long glue:

3. The speed of raw rubber is the fastest, while the long rubber is poor. The reason is that the long rubber particles are long, and they will lodging when they touch the ball, and the potential energy of the incoming ball is partially converted into the potential energy required for the lodging of the rubber particles, resulting in poor elasticity of the long glue. The granules of raw rubber are short, and the above problems are not present, but relatively speaking, due to natural rubber.

Things made of raw rubber are not good, and things made of semi-long rubber are durable, and this is the difference between raw rubber and semi-long rubber.

1. Positive glue

It is also called short-grained rubber, which is characterized by good elasticity, fast speed, stable hitting, and no turning, which is suitable for fast attack near the platform, especially the left-push and right-attack type of play, which is one of the most commonly used types of rubber for straight board fast-break players.

Positive rubber is the same as raw rubber in appearance, but the particles of positive rubber are harder than raw rubber. This also causes the positive glue to be faster, but the error rate should be increased accordingly, which is generally the glue used by the straight board near the fast attack players represented by Liu Guoliang.

2. Anti-glue

The anti-adhesive particles are facing inward, the smooth side is facing outward, the viscosity is large, the friction is large, and it is easy to cause strong rotation, which is suitable for players who play arc circles and cut the ball, and it is also the most commonly used rubber at present.

Features: Strong spin force, stable and easy to control. It is suitable for arc circles and arc circles combined with fast attack type play.

3. Raw rubber

Raw rubber is the opposite of reverse rubber in appearance, with the particle side facing outwards and the flat side bonded to the sponge. The diameter of the raw rubber particles is greater than the height, generally the height is up to 1 mm, and the particles have good soft elasticity.

The most significant feature of raw rubber is that the ball sinks, but due to the small area of eating the ball, it leads to the high lack of spinning and weakening, and the friction is small, so the general raw rubber is mostly used for fast dialing, swinging short and bounce and the hitting effect of the anti-rubber is very contrasting. Since the raw rubber has a rotation-reducing effect, it is particularly easy to control the ball.

4. Long glue

In terms of appearance, compared with normal rubber and raw rubber, the particles are longer and finer, and the height is larger than the diameter.

The friction of the long rubber itself is weak, and it cannot actively create rotation, but because the particles are high and fine, the particles are prone to fall to one side when hitting the ball, and the situation of changing the mind and changing the rotation of the ball will occur, that is to say, the opponent will spin down, and the reverse will be the topspin, and vice versa. Therefore, it is necessary to understand the characteristics of the rotation of long glue.

The return speed is slower, but it can produce a spin that is completely opposite to that of a regular rubber game, and can use the opponent's power and rotation to produce a very rotating return when cutting the ball. It is not recommended for beginners, and is usually used by odd ball players, or as a backhand rubber for chippers.

Long glue is a type of glue that is covered with a thin and long rubber skin on top of a thin sponge, while the rubber sponge is rubber. In May 1998, the International Table Tennis Federation held a council meeting in Durban, South Africa, and made a decision on prohibiting the use of long glue, and made a provision that the ratio of height to diameter of positive glue should not be greater than 1:1.

Semi-long glue also has the requirement that the ratio of height to diameter shall not be greater than 1 to 1, and it is sharpened but still retains most of the characteristics of long glue.

The difference between the two is the length of the particles, the long particles, and the original characteristics, the semi-long glue is a reduced version of the long glue, but the speed and power are slightly improved.