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China's food and packaging machinery industry has only been formed for 20 years, with a relatively weak foundation, insufficient technology and scientific research, and its development is relatively lagging behind, which has dragged the food and packaging industry to some extent. It is predicted that by 2010, the total output value of the domestic industry can reach 130 billion yuan (current price), while the market demand may reach 200 billion yuan. How to catch up and seize this huge market as soon as possible is an urgent problem we need to solve.

1. Development Status of China's Food Machinery Industry

China's food packaging machinery started in the late 1970 s, with an annual output value of only 70 millions or 80 millions yuan and only more than 100 varieties of products. In the past five years, the food and packaging machinery industry has developed at an average growth rate of 11% ~ 12% per year, which is higher than the growth rate of the national economy in the same period. The total sales volume has increased from 15 billion yuan in 1994 to 30 billion yuan in 2000, and the variety of products has increased from 270 in 1994 to 3700 in 2000.

The product level has reached a new level, and the trend of scale, complete sets and automation has begun to appear, and equipment with complex transmission and high technical content has begun to appear. It can be said that China's machinery production has met the basic needs of the country, and began to export to Southeast Asia and third world countries, such as China's total import and export volume in 2000 was 2.737 billion U.S. dollars, of which the export volume was 1.29 billion U.S. dollars, an increase of 22.2 percent over 1999. Among the export machinery varieties, food (dairy, pastry, meat, fruit) processing machines, ovens, packaging, labeling machines, paper-plastic aluminum composite tank production equipment and other machinery exports are more, food machinery such as sugar, wine, beverages, liquid food filling machines and other equipment have begun to export complete sets.

Development Status of World Food Packaging Machinery in 2.

Still in terms of food sales packaging, the most commonly used, the most basic packaging process methods have two categories, namely filling and wrapping. The filling method is suitable for almost all materials and all kinds of packaging containers. Specifically, the liquid, powder and granular body with good fluidity mainly rely on their own gravity, and it is necessary to complete the packaging process with a certain mechanical action. On the other hand, for semi-fluid with strong viscosity or single pieces and assemblies with large body shapes, corresponding compulsory measures such as extrusion, pushing, picking and placing are required. As for the wrapping method, it is different from this. It is mainly suitable for single pieces or assemblies with regular appearance, sufficient rigidity and tight packaging. Flexible plastics and their composite materials (some additional light trays and liners) are mostly used for wrapping by mechanical action.

Over the past decade, the international packaging industry attaches great importance to improving the packaging machinery and the entire packaging system of general and multi-functional integration capabilities, for the market to develop a variety of goods to provide timely and flexible means of production. At the same time, based on the actual needs of reasonably simplified packaging and superior packaging process methods, continuous exploration has significantly accelerated the pace of technological innovation. In particular, it echoes the synchronous development of modern automatic machine tools and gradually clarifies. In order to establish a new system of packaging machinery with diversification, generalization and multi-function integration, we must first focus on solving the big problems of combination and mechatronics, which is undoubtedly an important development direction in the future.

3. the gap between China and the world powers

1. The number of product varieties and complete sets is small.

Most of the domestic production of single-machine-based, while most of the foreign supporting production, rarely single-machine sales. On the one hand, the variety of domestic equipment can not meet the needs of domestic food and packaging enterprises, on the other hand, the single machine production and sales of machinery factory profit is meager, can not get the high efficiency of complete sets of equipment sales.

2. Low level of technology

It is mainly manifested in poor product reliability, slow technology update speed, and few applications of new technologies, new processes and new materials. China's food and packaging machinery more single, complete sets of less, more general models, to meet special requirements, special materials less equipment. There are many products with low technical content, but few products with high technical added value and high productivity; intelligent equipment is still in the development stage.

3. Poor product quality

The quality gap of food and packaging machinery products in China is mainly manifested in poor stability and reliability, backward shape, rough appearance, short life of basic parts and accessories, short trouble-free running time, short overhaul cycle, and most products have not yet established reliability standards.

4. Insufficient development capacity

China's food and packaging machinery is mainly imitation, surveying and mapping, a little localization improvement, not to mention the development of research. Our development methods are backward, and now better enterprises have carried out the project of dumping plates, but few of them really use CAD. Product development lack of innovation, difficult to level. The means of production are backward, and most of them are processed with old general-purpose equipment. New product development is not only a small number, but also a long development cycle. In the enterprise management, often heavy production and processing, light research and development, innovation is not enough, can not keep up with the market demand to provide products in a timely manner.

4. the future needs of food packaging machinery

With the accelerated pace of people's daily work, the richness of nutrition and health food, and the enhancement of environmental protection awareness, many new requirements will inevitably be put forward for food and its packaging in the future. This includes vigorously developing new technologies and new products such as vacuum packaging, vacuum inflatable packaging and aseptic packaging according to local conditions, so that they can be organically combined with quick-frozen packaging. Looking at the current and future, it can be confirmed that the following three types of packaging machines are excellent models suitable for food sales and packaging, and can be called the leading models with a long development history and strong vitality, namely, vertical bag (box) forming, filling and sealing machine, horizontal bag (box) forming, filling and sealing machine, and horizontal seam wrapping machine.

According to the analysis of the idea of group technology, there are many commonalities and similarities between the three, which are conducive to unified development, and each has special differences, which should be selected according to local conditions. After a comprehensive comparison, its main characteristics are listed as follows:

The packaging object matches the three models with almost everything (usually except for gas-containing materials), but the third limitation.

The packaging materials are mainly roll-type composite films. In some cases, the second kind can be placed inside the straw, and the third kind can be placed inside the supporting ribs and other auxiliary parts.

The second kind of packaging form has many patterns, such as three-sided sealed bags, four-sided sealed bags, double bags, self-standing bags, brick boxes, roof boxes, etc. The first kind is second, and the third kind is less, usually pillow-shaped bags are given priority to, and some can be made into cylindrical bags, four-sided sealed bags, etc. The bag width of the first type of packaging size is at least 10mm, and the bag length can be adjusted steplessly within a limited range. The width and length of the latter two bags can be adjusted steplessly within a limited range, of which the length of the third bag can reach more than half a meter.

The second new type of sealing type has many problems, such as flat sealing at the upper end with tear opening or tear line, combined sealing with embedded box, screw cap sealing placed in different parts, etc. The other two models appear monotonous.

The conveying movement can realize both continuous movement and step-by-step movement. The structural combination fully reflects the modular junction, especially the second horizontal layout is more convenient to configure functional modules (such as vacuuming and nitrogen filling). In addition, the high degree of electromechanical integration greatly enhances the diversity, versatility and multi-function integration, forming a series of products.