One of the hallmarks of the development of modern internal mixer is the high-speed, high-pressure, and high-efficiency machines

Since the emergence of internal mixers, a series of advantages have been demonstrated in the mixing process compared to open mixers, such as short mixing time, high production efficiency, easy operation, better overcoming dust flying, reducing loss of admixture, improving labor conditions, and reducing labor intensity. Due to its development largely based on experience, there was a claim in the early stages of development that the efficiency of molding was low and it cannot be used for molding, but it has been denied by production practice.
Therefore, the emergence of internal mixer is an important achievement of rubber mixing machinery, and it still remains a typical equipment in plastic and mixing, and is constantly developing and improving. According to foreign data statistics, 88% of rubber materials in the rubber industry are manufactured by internal mixers, and internal mixers are also widely used in the plastic and resin industries.
In this intense mixing process, of course, many new problems will arise. Therefore, for mechanical research and design, from the kneading system, cooling system, sealing system, feeding and pressing system, unloading system, transmission system, control system, main components, materials to various technical decisions and theories of parameters, corresponding development is needed to ensure excellent performance of the machine, Provide possible adaptability and regulation for the production process.
One of the symbols of the development of modern internal mixer is the high-speed, high-pressure, and high-efficiency machines. Usually, a low-speed mixer with a rotor speed of 20rpm is called a low-speed mixer, a 30-40rpm mixer is called a medium speed mixer, and a speed mixer above 60rpm is called a high-speed mixer.
In recent years, there have been internal mixers with speeds up to 80rpm or even higher, as well as dual speed, three speed, and variable speed internal mixers with extensive adaptability and treatment methods to process and efficiency, as well as internal mixers with adjustable rotor speed ratios. Its operating time has been greatly shortened, from 8-15 minutes for slow machines in the past to 1.5-3.5 minutes, and some even reach 1-1.5 minutes (including the process of combining internal mixing and supplementary mixing).
The structure of the internal mixer is also constantly developing. The working process of the internal mixer and the mechanization and automation level of the entire unit are also constantly improving, using program control. Nowadays, large imported machines are all controlled by computers. In short, this development is greatly strengthening the mixing process, improving machine efficiency, reducing physical labor, and improving the working environment.

Dongguan Zhenggong Electromechanical Equipment Technology Co., Ltd. was founded in 1988 in Dongguan, Guangdong. Its main products Small open mill, Small internal mixer, Small tablet press, small vulcanization machine, Small extruder, and various customized laboratory mixer rubber and plastic mechanical equipment. Established the Taiwan Joint Venture Business License in 2009, after more than 30 years of research and development and creation. It has been located in Houjie Town, Dongguan City, Chinese Mainland Province, mainland China.