Release time:

2024-12-15

Plasticators are important equipment for mixing and plasticizing plastics, and are widely used in plastic processing and other fields. They are mainly divided into open and closed types. Single-screw plasticators, such as those produced by Wuxi Tengyu Environmental Protection Technology Co., Ltd., mainly consist of a base, a connecting seat, and a table top to form a table-top structure. They are composed of a transmission system, rollers, roller bearings, a frame, safety devices, electric heating devices, and an electrical control cabinet, with a numerically controlled temperature detection system. Its roller diameter is 160mm, the roller working surface length is 320mm, the roller speed ratio is 1:1.35, the roller adjustment distance is 0-5mm, the front roller speed is 11.91m/min, the single batch feeding amount is 1-2kg, the motor specifications are 5.5KW, 960r/min, the external dimensions are 1550×900×1250mm, the heating (electric heating) range is room temperature to 200 degrees, the front and rear rollers have digital display temperature control, the heating power is 3.3KW, and the total weight is 1T. Single-screw plasticators are often used in rubber factories and research unit laboratories for raw rubber plasticizing, mixing of rubber materials and compounding agents, heat treatment of mixed rubber, and pressing of sample tablets, and can also be used for plastic mixing tests. Its structure is relatively simple, easy to manufacture, and operation and maintenance disassembly are convenient, so it is widely used in plastic product enterprises. However, it also has some shortcomings, such as high physical exertion for workers, manual mixing and turning of the mixed material is required in high-temperature environments, and the number of times of manual turning of the plastic sheet significantly affects the quality of the raw material mixing. Closed plasticators, also known as internal mixers, mainly consist of a closed mixing chamber (also known as a plasticizing chamber), with a feeding device at the top and a discharging device at the bottom, and top plugs at both ends. When the top plugs are closed, a closed plasticizing chamber is formed. Inside the plasticizing chamber, there is a pair of counter-rotating rotors. The cross-section of the rotors is pear-shaped, and the longitudinal section is Z-shaped. The rotor speeds are slightly different, and there is a fixed speed ratio between the rotors and between the rotors and the inner wall of the plasticizing chamber. The outer wall of the plasticizing chamber is also equipped with a cooling (heating) jacket for heating and cooling the material. During operation, the upper top plug is first lifted, and the material is added from the feeding port. Then, the upper top plug is pressed down by air pressure to press the material into the mixing chamber, and the material is kept pressed during the operation, applying a certain force to the material. After mixing, the lower top plug is opened, and the material is discharged from the discharge port. The material plasticized by the internal mixer is a viscous lump when discharged, and usually needs to be rolled into sheets by an open mill and cooled before further processing. The advantages of internal mixers are that they have minimal risk of dust and smoke dispersion, high degree of automation, safe operation, good mixing effect, and high production efficiency. Different types of plasticators have different characteristics in structure and function. Enterprises will choose the appropriate type of plasticator according to their own production needs and process requirements to ensure the smooth progress of plastic processing and related production processes and product quality.