The hottest strategy for developing food packaging

2022-08-18
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Strategies for developing food packaging machinery

1. Development strategy of food packaging industry

in the 1990s, the total output value of the global food industry reached $2.2 trillion, higher than that of other industries. As for the total output value of food packaging industry, it also accounts for more than 60% of the total output value of packaging industry

In the 21st century, it is expected that the development focus of all countries will still be to strive to properly solve the major problem of people eating (including the special needs of the army and the people), which determines that the food industry and the packaging industry are sunrise industries that will never decline

II. Analysis of the current situation of food packaging technology

in view of the wide variety, diversity and endless emergence of food, and most of the organic substances are vulnerable to external microbial infection and physical, chemical, mechanical and other adverse effects, so most of the packaging is required to have strong protection, use and promotion functions, resulting in the sterility, miniaturization, diversification, simplicity, mechanization Automation has become the mainstream of the development of the times

no matter what kind of packaging method is adopted, first of all, the packaging materials and containers should be reasonably selected from the requirements of all aspects of internal packaging

for liquid food, plastic bottles, glass bottles, metal cans, bags, boxes, cups made of composite materials are commonly used; For semi fluid food, plastic or glass wide mouthed bottles, bags, boxes, cups made of composite materials are commonly used; For powder, granular and food mixed with liquid, commonly used metal cans, plastic wide mouth bottles, bags, boxes, cans made of composite materials, etc; Large plastic boxes, metal cans, bags, plates, boxes made of composite materials are often used for single or multiple collections of solid foods such as blocks, sheets, strips, and solids similar to spheres and hemispheres

in short, at present, the proportion of bottles, cans, boxes, etc. made of metal and glass in food sales packaging containers is small, and there is a gradual downward trend. They are mostly used for gift packaging or special packaging. Boxes and plates made of thin cardboard are generally used for outer packaging due to their poor barrier performance. Only bags, boxes, cups, etc. made of composite materials based on plastic film can significantly protect food and beautify the appearance. They are diverse in shape, easy to process, save resources, low in cost, light in use, and strong in adaptability. They can be described as almost everything (except usually gas-liquid materials), everything (extended to all occasions on land, sea and air), and have a bright future

III. future demand for food packaging

with the acceleration of people's daily work pace, the enrichment of nutritional 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. What is striking now is that in view of the rapid popularity of refrigerators and microwave ovens, and the gradual maturity of other relevant conditions, it will not be long, especially in the construction industry. By developing quick-frozen food as convenience food and fast food, a large number of households, enterprises and institutions (including services, tourism and other industries) can be introduced. At the same time, we should vigorously develop new technologies and products such as vacuum packaging, vacuum inflatable packaging and sterile packaging according to local conditions, so as to organically combine them with quick-frozen packaging and jointly promote food packaging to a higher level. In this way, consumers at all levels place their hopes on small food packaging containers with cartons as the main body, especially with regard to a comprehensive understanding of the lightness of use, which mainly refers to that the packages are easy to open, placed at will, sealed for many times, retractable after use, safe and reliable. Therefore, corresponding measures must be taken to further improve the bag type and box type, and realize the scientization and diversification of the main body and sealing structure

it is widely acknowledged that in business competition, both good quality and low price must always be taken into account. If we can do this, it is not difficult to occupy the market and remain invincible. One way out is to realize the dialectical unity of reasonable packaging and simplified packaging. The reason is obvious. Rationality also includes simplification, but simplification is not necessarily reasonable (such as the naked thin plastic tube packaging of beverages and the soft carton packaging of biscuit heaven and earth covers that were eliminated in the past). In fact, from the perspective of the mainstream, many well-designed and popular bag and box packaging have the advantage in this regard, because after reasonably simplifying the packaging form and structure and related processes and equipment, various consumption and waste in the production and sales process can be greatly reduced, and many lower stability factors can be eliminated, so as to improve the overall efficiency, and finally reflect the general direction of modern packaging

IV. current situation of food packaging machinery

as far as the sales and packaging of food are concerned, the most commonly used and basic packaging process methods nowadays fall into two categories, namely, filling and wrapping. The filling method is applicable to almost all materials and all kinds of packaging containers. Specifically, for liquids, powders and granular materials with good fluidity, the packaging process can be completed mainly by their own gravity, supplemented by a certain mechanical action. For semi fluid with strong viscosity or single and assembly parts with large body shape, corresponding compulsory measures such as extrusion, pushing, picking and placing shall be adopted. As for the wrapping method, it is different from this. It is mainly applicable to single or combined parts with regular shape, enough rigidity and tight packaging requirements. Flexible plastics and their composites (some additional lightweight pallets and liners) are used for wrapping with the help of mechanical action. So far, the wrapping form is also rich and colorful, but the bag type should be the mainstream. The observation of domestic and foreign markets is enlightening. Although the filling method and wrapping method have their own characteristics, the former is more widely used all over the world and plays a leading role. Nevertheless, it is worth emphasizing that, in connection with the above-mentioned advantages of bags and boxes, if the two methods of filling and wrapping can be used together, it can be said to be a powerful addition, which will enhance the overall function of food packaging machinery and achieve more effective packaging in general. Over the past decade, the international packaging industry has attached great importance to improving the general ability and multi-function integration ability of packaging machinery and the whole packaging system, so as to provide timely and flexible production means for diversified commodities with rapid market development. At the same time, based on the actual needs of reasonably simplifying packaging and optimizing packaging process methods, continuous exploration has significantly accelerated the pace of its own technological innovation. Especially with the synchronous development of modern automatic machine tools, it is gradually clear. In order to establish a new system of packaging machinery with diversification, generalization and multi-function integration, we must first focus on solving the major problems of combination and electromechanical integration, which is undoubtedly an important development direction in the future

The basic guiding ideology of

combination is to design a series of modules with independent functions (generally referring to parts, components, devices and equipment) according to the general requirements of packaging, and change the type of modules during application. Change the process and overall function of the system according to the quantity and position, so as to make it a general packaging machine with certain flexibility, and realize multiple functions of one machine, so as to achieve the purpose of packaging multiple varieties and small batches of products with less investment

from an overall perspective, horizontal layout is often better than vertical layout. The former is conducive to epitaxial modules, so as to increase functions, facilitate operation, beautify appearance and stabilize the body. The main disadvantage is that it occupies a large area. It is of great significance to develop bio based epoxy resin with excellent comprehensive performance with renewable and abundant biological raw materials. Weighing the advantages and disadvantages, the mainstream of future development should be the horizontal combined multifunctional packaging machine

v. leading models that should be developed for food packaging machinery

focusing on 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 history of development and strong vitality, which are often introduced by the third party, namely, vertical bag (box) forming, filling and sealing machine, horizontal bag (box) forming, filling and sealing machine, and horizontal seam wrapping machine

analyzed according to the idea of group technology, there are many commonalities and similarities among the three, which are conducive to unified development. In addition, they have their own special differences, which should be selected according to local conditions. After a comprehensive comparison, its main features are listed as follows:

packaging object - matching the three models is almost all inclusive (except for gas-liquid materials), but the third limitation

packaging materials are mainly reel type composite films. In some cases, the second kind can be used to put straw, and the third kind can be used to put tray and other accessories

packaging form - the second pattern is more, such as three side sealed bags, four side sealed bags, duplex bags, self-supporting bags, brick boxes, roof boxes, etc; The first kind is in the second place, and the third kind is less. Usually, pillow bags are the main ones, and some can be made into cylindrical bags, four side sealed bags, etc

package size - the minimum bag width of the first variety is 10mm, and the bag length can be adjusted steplessly within a limited range; The width and length of the latter two kinds of bags can be adjusted steplessly within a limited range, and the length of the third kind of bags can reach more than half a meter

sealing type - many of the second type have been newly developed, such as the flat seal at the upper end of the tear opening or tear line, the combined seal with an embedded box, the screw cap seal placed in different parts, and so on; The other two models are monotonous

transmission movement - it can realize both continuous movement and step-by-step movement

structure combination - fully reflects the modular structure, especially the second horizontal layout is more convenient to configure functional modules (such as vacuum pumping and nitrogen filling). Coupled with the high degree of electromechanical integration, the diversity, versatility and multi-function integration are greatly enhanced, forming a series of products

it is reported that for a long time, these three typical models have played an important role in the domestic and foreign markets with promising prospects, and the second one is the most prominent and in the ascendant. In addition, we should also see that aseptic packaging technology is being promoted and applied in the fields of liquid beverages and liquid non-staple foods at an alarming rate. In the future, some foods with high viscosity, foods mixed with particles and liquids, and solid foods will also gradually adopt aseptic packaging. It can be predicted that by then, a variety of bags and boxes made of plastic composites will still be effective packaging containers to support their continued development. Moreover, the dry type sterile packaging machine that has been developed to replace this kind of brominated flame retardant if it is implemented as soon as possible, whether vertical or horizontal, is generally based on the emergence and evolution of the above-mentioned leading models, but the function is more perfect and the technology is more complex

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