In the plastic industry, soft plastic materials such as TPU, TPE, TPR, silicone, and rubber are relatively special and difficult to break. Their characteristics include:
1. It is elastic and not easy to cut,
2. The viscosity is easy to become strong, and the friction between the material and the cutter shaft during pulverization causes the temperature to rise, which can adhere to the cutter,
3. It is not easy to cut the material, because it produces stickiness, so it will stick to the screen and not cut the material, further increasing friction and causing the temperature to rise again.
Therefore, when crushing, it is necessary to adopt a specially designed pulverizer based on the above characteristics:
1. Tool type: Piece type tool, single piece tool with large size and strong cutting force,
2. Tool material: Japanese chrome molybdenum vanadium material tool, hardness 61-62 ° C, enhanced cutting force,
3. Adding a water cooling system: In order to reduce the high temperature generated by working friction, it is necessary to install a water cooling system to cool the cutter shaft and crushing chamber,
4. Screen treatment: within an acceptable range, the screen aperture should be as large as possible. Antistatic treatment shall be conducted on the surface of the screen to reduce the occurrence of sticking materials.
The above are some special configurations of TPU, TPE, TPR, silicone, rubber and other soft rubber special pulverizers. Of course, the configuration and construction of the machine will vary greatly depending on the requirements for plastic and rubber crushing.