Analysis of the most popular bag making, filling a

2022-08-12
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Analysis of the situation of bag making, filling and packaging machines at home and abroad

[Abstract] this paper briefly introduces the current situation and main problems of bag making, filling and packaging machines in China and the development of similar products in foreign developed countries. The main gap between China and it is analyzed. It also points out the development countermeasures and key research areas for relevant industries in China

Abstract:This arcicle introduce the condistions, problems, and the development of the same machine abroad in producing packaging machinery, analyze the distance between our country with the developed countries, and also provide the countermeasrue and emphasis field about the development of relevant trade in our country.

in order to meet the diversified requirements of modern commodity packaging, general packaging machinery and equipment suitable for multiple varieties and small batches have been developed at home and abroad, which makes the forms of packaging machinery increasingly increased. Bag making, filling and packaging machine is an automatic packaging equipment that can heat and soften the plastic composite film with thermoplastic characteristics into a packaging container, and automatically complete the whole process of bag making and molding, metering and filling, sealing and shearing on one equipment. According to the different packaging materials, it can be divided into the following categories:

(1) powder and granule packaging equipment. Such as small bags of milk powder, coffee and other materials

(2) fluid and semi fluid viscous packaging equipment. Such as the packaging of condiments, sauces, Oils and other materials

(3) stereotyped packaging equipment. Because the size and shape of solid shaped materials are quite different, different filling forms or electronic weighing machines should be used according to different materials

1 main features of foreign bag making, filling and packaging machines

1, standardization and modularization of structural design. When using a packaging machine to complete the packaging of different materials, the modular design of the original model can quickly change the specification or convert to other types of packaging in a short time. Therefore, there are strict requirements on the flame retardancy and electrical properties of materials, providing enough space for different measurement systems. If the pillow packaging machine is slightly adjusted, the packaging of triangle bags can be realized

2. High speed packaging. At present, the single row packaging speed of small bag packaging machines abroad is generally bag/minute. In recent years, many companies have launched multi row packaging machines (from 2 to 10 rows) to greatly improve the packaging speed. For example, the 300 and 400 series pillow packaging machines of ilapak company in Italy have a measurement range of 150 ~ 450g and a packaging speed of 120 Bags/minute; The model yde-70 four side sealing and packaging machine of Yokohama Electric Manufacturing Institute in Japan has a measurement range of 0.5 ~ 30ml, can be used in 2 ~ 10 rows, and the maximum speed is 800 bags/minute; The fc-1000 small bag pillow type packaging machine of Sanguang machinery of Japan can reach 12 rows at most, and the speed can reach 1000 bags/min

3. High accuracy of structural motion. Due to the use of various new technologies, such as servo motor, encoder, digital control (NC), power load control PLC and other high-precision actuators to control various actions, the filling measurement accuracy and bag making accuracy of the whole machine have been improved. For example, the Sigma3 powder metering machine of Tokyo automatic machinery in Japan is equipped with a variable-speed drive motor, which adopts screw cutting and filling. The maximum filling is 1.2kg each time, and the filling accuracy is 60.25%; According to different models, the filling volume of the desktop liquid filling machine of Japan's Kawasaki society can be 0.1 ~ 600ml, and the filling accuracy is 0.5%

4. Intelligent and flexible control. Most foreign machines track and adjust various parameters of the machine through intelligent control instruments and menu application software on the touch screen. The electronic display screen shows the bag cutting length, packaging speed, net content of fillers and packaging output at a glance. The standard color code tracking photoelectric system can absolutely ensure the correct printing pattern of packaged products. In addition, the machine can carry out condition monitoring and fault diagnosis and analysis of the working process. Once a problem occurs, it will automatically stop and display "rdquo; Show the cause and solution of the fault

5. Diversified packaging forms. At present, foreign bag packaging includes three side sealed bags, four side sealed bags, pillow bags, organ type, self-supporting bags, etc. (as shown in Figure 1). Users can have more choices according to the needs of the market

Figure 1 several bag shapes with different sealing methods

2 the status of domestic products and the main gap compared with foreign countries

China's packaging machinery has developed relatively late and is currently in the initial stage of application. Moreover, due to the technical level of users and the limitations of various environmental factors, the needs of packaging machinery in China are like a "pyramid". The demand for high, precision and sophisticated equipment is the spire, and the more sophisticated the equipment, the smaller the demand; The demand for medium and low-grade equipment is like the bottom of the "pyramid", with large volume and wide range, and unlimited business opportunities. With the continuous increase of market demand, China's bag making, filling and packaging machines have developed rapidly after the 1990s. Through reference to foreign products, digestion, absorption, independent development and research, the technology has been greatly improved, and the measurement range ranges from 1g to 1000g, especially in product function and automation. However, the huge service hidden dangers emerging from the rapid development began to cause concern in the market, especially many small enterprises, which basically produce without the scale investment of fixed assets such as manufacturing and quality assurance, resulting in the entry of a large number of small opportunistic enterprises, which is the basic industry to promote the innovation and development of enterprises. These small enterprises have little development planning, technical reserves and technological upgrading capabilities, but just want to make some products and leave immediately after making some profits when a hot product is emerging; There is no or no appropriate resource investment for the technical improvement in the field of packaging machines. It is for this reason that these enterprises use simple, low-grade raw materials, neither quality assurance, nor standardized process requirements to manufacture products and dump them at low prices. These products without quality assurance, irregular installation and commissioning, and false service commitments have cast a shadow on the reputation of the entire industry; At the same time, the enthusiasm of enterprises engaged in large-scale R & D and production in the field of packaging machines is also a blow, delaying the pace of packaging machines to the high-tech field and hindering the development of the packaging machine industry

at present, the number of domestic enterprises producing bag making, filling and packaging machines has grown to more than 50, but most of the products have low technical content, low degree of product differentiation, and mature product technologies are easy to imitate and plagiarize, resulting in low-level heavy development space, which is difficult to estimate, hindering the technological innovation and development of packaging machines. China may soon become a major manufacturer of packaging machinery, but it is still difficult to get rid of the status of "small brand country"

in terms of product technology, the main characteristics of foreign packaging machines are our main gap

(1) low speed and few varieties

most domestic bag making, filling and packaging machines are generally between 20 ~ 100 bags/minute according to the different packaging materials and the size of the output. Most of them are single row packaging, and the sealing forms are generally three side sealing, four side sealing and back sealing. There is no automatic packaging machine for self-supporting bags and organ bags in China

(2) low accuracy

for the powder metering and filling system with screw filling, when the filling amount is 100g ~ 1000g, the metering accuracy of foreign machines is general

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