The hottest view on the development of vacuum pack

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Views on the development of vacuum packaging machinery

the packaging industry undertakes the packaging of industrial and agricultural products worth trillions of yuan in China every year. With the improvement of economic internationalization and the development of foreign trade, the packaging of export commodities has also increased to more than 100 billion US dollars in recent years. With China's entry into the WTO, the packaging of export goods will increase greatly and have high requirements. Therefore, the development of high-precision and cutting-edge packaging machinery. Second, the products with too high carbon concentration in the carburized layer of high alloy carburized steel have become the top priority of the packaging industry

vacuum packaging machinery is the highlight in the packaging of circulating commodities. Therefore, the author puts forward some opinions on the development of vacuum packaging machinery and discusses with insiders

vacuum packaging technology originated in the 1940s. Since 1950, polyester and personnel quality will continue for a long time. Polyethylene plastic film has been applied to commodity packaging, vacuum packaging machinery has developed rapidly. Its development trend reflects the following points:

vacuum packaging machine has a high degree of automation. Take the tvp-b2 series rotary vacuum chamber packaging machine of Toyo Automation Co., Ltd. of Japan as an example, which is a multi station packaging machine with a high degree of automation. It is equipped with two turntables for filling and vacuum pumping. The filling turntable has six stations to complete bag feeding, printing, bag opening, feeding, filling and pre sealing until the package is transferred to the vacuum pumping turntable. The vacuum turntable has 12 stations (i.e. 12 vacuum chambers) to complete vacuum pumping and sealing until the finished product is output, and the productivity is as high as 40 bags/minute

vacuum packaging machine has multiple functions. One machine has multiple functions, which can easily expand the scope of use. The multi-function of one machine requires modular design. Through the transformation and combination of functional modules, it becomes a different type of packaging machine suitable for different packaging materials, packaging items and packaging requirements. This kind of representative products, such as the spindle wheel multi station bag making vacuum packaging machine produced by Hesser factory affiliated to Bosch Company in Germany, can complete bag making, weighing, filling, vacuum pumping, sealing and other functions on one machine

the production rate of vacuum packaging machine is high. At present, the productivity of such machinery has increased from several pieces per minute to dozens. The production rate of thermoforming filling sealing machine has reached more than 500 pieces/minute

vacuum packaging machine combined production line. When more and more functions are needed, concentrating all functions on one machine will make the structure very complex and the operation and maintenance inconvenient. At this time, several machines with different functions and matching efficiency can be combined to successfully complete the production line. For example, France's crace cryova avoids sticking plastic particles and blocking the material mouth due to temperature rise, and the fresh fish vacuum packaging production line developed by ISTM company; The textile vacuum packaging system developed by Sweden Shuhong International Co., Ltd. and the Swedish Textile Research Institute. The textile packaging system is composed of temperature and humidity processing equipment, two underwear vacuum packaging machines and one J) experimental software: Chinese Windows interface coat vacuum packaging machine and one packaging machine. It has the characteristics of large vacuum chamber and flat pressure mechanism, which can prevent wrinkles and distortion in the process of compressing and reducing volume

at the same time, relevant new technologies can be adopted or advanced technical devices can be installed on the vacuum packaging machine to make the machine more perfect. For example, in terms of packaging methods, inflatable packaging is used to replace vacuum packaging, and inflatable components, packaging materials and inflatable packaging machines are combined; In control technology, computer technology and microelectronics technology are applied; Use heat pipe and cold sealing technology on the sealing station. Advanced devices can also be directly installed on the vacuum packaging machine, such as the computer-controlled high-precision combined scale for coarse materials; In the rotating vacuum packaging machine, advanced high-speed circular arc cam indexing mechanism is applied

at present, the production technology of desktop, single chamber, double chamber and conveyor belt vacuum packaging machines in China has passed the test, and the output can basically meet domestic demand. In recent years, some new models have been developed, but there is still a big gap compared with foreign countries such as Italy, Germany, the United States and Japan. In order to catch up with the world's advanced level and strive to improve the technical content of China's vacuum packaging machinery, the author believes that the following four aspects should be done well

first, strive to digest and absorb foreign advanced models

the sz101 food vacuum flexible packaging machine produced by Shanghai machine tool factory is developed on the basis of absorbing the tvp-b 2 automatic vacuum packaging machine of Toyo Automation Co., Ltd. in Japan. However, there are still many internationally popular advanced models that have not been digested and absorbed in China. Even if digested and absorbed, only oneortwo varieties have been broken through first, and they need to be further improved to form a series. We should also strive to improve the rate of localization, and we should not rely on imports of key components and technologies. In addition, the relevant key technologies of some varieties, such as vertical filling sealing vacuum packaging machine, determinant vacuum packaging machine and rotary breathing vacuum packaging machine, need to be tracked, used for reference and developed as soon as possible. Foreign advanced models collectively represent the development level of vacuum packaging machines in the world today, and also indicate the development trend of vacuum packaging machines. Only by digesting and absorbing valuable information, can we make "foreign things serve China" and accelerate the expansion of vacuum packaging machinery series products in China

Second, research and develop models with Chinese characteristics

China has a large population, rich labor and relatively cheap, so don't unilaterally pursue high productivity and automation, and don't think too much about the multi-function of a single machine. The domestic vacuum packaging machine should be advanced in technology and design principle, while the operation and mechanical maintenance should be simplified as much as possible. Therefore, we can vigorously develop various special models in different categories, and at the same time, we can use a combination of certain functions, and a large number of building block and modular designs. Of course, in order to enter the international market and occupy a seat, high-grade and high-tech products should also be available, so that China's vacuum packaging machinery products can form levels and gradients, which is the best policy

III. pay attention to the application of advanced technology

chamber type and conveyor belt type vacuum packaging machines are two types of commonly used models. There are two control modes, one is microcomputer control, the other is relay logic control. The former control method enables the equipment to have more functions and superior performance. With microcomputer control, the functions of 1 ~ 3 times of air extraction and inflation can be realized, and the fault position can be displayed. Relay control is difficult to achieve. However, many enterprises in China still adopt relay logic control mode, and microcomputer control is rare. In the future, we should speed up the application of microcomputer control in vacuum packaging machines, so that products can be constantly updated

fourth, strengthen the research and development of key parts and components, and realize professional production. The vacuum pump and vacuum valve on the vacuum packaging machine are the key components. In recent years, China has introduced internationally advanced RS series single-stage vane pump technology, named XD series, which has been produced by several enterprises and has initially formed a series, but the specifications are not complete and need to be improved. There are also oil-free vacuum pumps widely used abroad. China can only produce a few kinds, which have not formed a series, and can not fully meet the needs of domestic products. There are few varieties of vacuum valves in China, and the specifications are not complete enough. In the future, we can only vigorously strengthen the research and development of vacuum solenoid valves to avoid the phenomenon of replacing low vacuum valves with high vacuum valves or general air valves. In terms of mechanical transmission, the advanced high-speed circular arc convex wheel stepping indexing transmission box is the key component of the rotary vacuum packaging machine, and our country is still in its infancy

there are many parts that can be professionally produced by vacuum packaging machines, such as heat sealing transformers, heat seals cooled by internal water, etc. at present, they are also produced by various manufacturers, and the quality is unstable. In foreign countries, it is produced by professional factories, and hollow profiled aluminum is selected, which has reliable quality and low cost. Others, such as various seals and special-shaped transmission chains, are most suitable for organizing specialized production because of the difficulty and high cost of the mold. Only by actively organizing and realizing the specialized production of parts and components can we further improve the product quality and technical level of China's vacuum packaging machinery, better meet the needs of the domestic packaging industry, and make the vacuum packaging machinery enter the international market and win a place

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