Gap between domestic bag making, filling and packaging machines and foreign products. After the 1990s, China's bag making, filling and packaging machines have developed rapidly. By referring to the minimum reading of foreign products up to 0.0001n, digestion, absorption, independent development, research and technology have been greatly improved. The measurement range ranges from 1g to 1000g, especially in product function and automation
however, most of the domestic bag making, filling and packaging machines have low technical content, low product differentiation, and mature product technologies are easy to imitate and plagiarize, resulting in low-level duplication, which hinders the technological innovation and development of packaging machines. Although China may soon become a major manufacturer of packaging machinery, it is still difficult to get rid of the status of "small brand country"
in terms of product technology, the main gap between China and foreign packaging machines lies in:
low speed and few varieties.
most domestic bag making, filling and packaging machines are generally single row packaging as long as they are installed with an extension of 20 ~ 100 bags/minute according to the development and output of the packaging material aluminum industry over the years. The sealing forms are generally three side sealing, four side sealing and back sealing. There is no automatic packaging machine to produce self-supporting bags and organ bags in China
low accuracy transmit the torque to the torque plate end through sample loading to detect the torque
for the powder metering filling system filled with screw, when the filling amount is 100g ~ 1000g, the metering accuracy of foreign machines is generally 1%. For example, the filling range of dos-c/102 vertical packaging machine of Italian seram company is 50 ~ 2000ml, the filling speed is 70 bags/minute, and the measurement accuracy is 0.5% ~ 2%. The precision of Japanese Tokyo automatic machinery Sigma3 can reach 60.25%. The maximum filling capacity is 1.2kg and the maximum filling speed is 100 bags/min
domestic powder packaging machines that use screw metering and filling mostly have a metering accuracy of 62% ~ 63%. When used for low-dose packaging, they can basically meet the packaging requirements of users, but when the dose is large, it is difficult to meet the actual requirements of users. For example, domestic milk powder is generally 400g ~ 500g per bag. If the error is controlled by 62% ~ 63%, it is obviously unacceptable to users
due to the great difference in the particularity of packaging materials, the fluidity and viscosity of materials are different, and some materials require the machine to have anti-corrosion ability. Therefore, even the same type of packaging machine can not widely adapt to the packaging of various materials, so it is necessary to design or use different filling mechanisms or different materials for materials. However, in order to make money quickly at the initial stage of product production, some enterprises dump their products at low prices by using electronic components, control components or low-grade raw materials without quality assurance. In addition, there is no standardized processing and assembly process, and no transformation for specific use conditions. As a result, the products are unstable or not suitable for users' use requirements, causing huge losses to users
low level of automation and intelligence
in recent years, China's bag making, filling and packaging machines have adopted some PLC and instruments with intelligent control function, but generally speaking, most of them are still low-level electromechanical control, and there is no machine with data storage, acquisition and correction functions