According to statistics, from the current situation, the global demand for packaging machinery is expected to increase at a rate of 5.3% per year, reaching US$29 billion by 2005. The fastest growing production of packaging equipment is in developing countries and regions; It will benefit from stimulating domestic demand and seek suitable local manufacturers in developing countries, especially investment in food processing factories to provide packaging machinery and equipment.
Compared with some developed countries, the overall level of China's packaging industry shows great growth potential. With the rapid development of China's economy, China's packaging industry has also entered a stage of healthy, stable and rapid growth. From 2006 to 2010, it will continue to maintain a high growth rate of 7%, and the total output value will reach 450 billion yuan. The continued rapid and healthy development of China's food, beverages, pharmaceuticals, tobacco, daily chemicals, electronics and other industries has also provided a broad market for domestic and international packaging industries.
PET beer bottles will become the focus of attention of the entire industry
At the same time as the rapid development of China's beverage industry, beverage packaging has also become more colorful. From the traditional glass bottles to the most popular PET beverage bottles nowadays, there are more and more varieties, and the appearance is more and more novel. At present, the most popular PET beverage packaging was first introduced by PepsiCo in the 1970s. It is cheap, transparent, airtight, compressive strength and easy to mold, making it more and more widely used in beverage packaging. Applications. In the early 1990s, Japan introduced heat-resistant PET production equipment that enables PET bottles to be hot-filled. At present, the world's major beverage-producing countries use more than 60% of PET materials in carbonated beverages, fruit juices, juice drinks, tea drinks, and bottled drinking water.
When PET material is used in the beverage packaging industry, the quality of the air pressure required for the blow-molding process is gradually improved. AF has fulfilled this large market by developing a series of 40-bar oil-free air compressors. At present, more than 1,500 AF air compressors are widely used in more than 100 countries in the world.
In the past four years, the sales of AF products in China have been steadily developing. With the continuous improvement of the domestic level of similar products, AF is also constantly improving itself, reducing costs on the basis of quality assurance, achieving double advances in service and sales, which is very important for the development of AF in China in the next few years. .
Looking back at the development of the industry, the period from 1998 to 2001 was the peak period for the development of PET in the Chinese beverage industry. This field has been in a stable period of development since 2002. For the future, we are very optimistic about the PET beer bottle market, the market has great potential for development, and even more than the current market demand for juice, drinking water. At present, many domestic and foreign companies have already developed PET beer bottles. The development of PET beer bottles has become the focus of attention of the entire industry. PET beer bottle production line has appeared in foreign markets. I believe that in the future China market, there will be more significant breakthroughs in this area.
Food packaging quality control has rules to follow
At present, flexible packaging has become the mainstream of food packaging because of its unique advantages of light weight, beautiful appearance, excellent quality, and low cost. Its performance and quality are more related to the preservation of food during storage, transportation, processing and sales, prevention of deterioration, and ease of transportation. Store these actual problems. How to solve these problems effectively, economically, and conveniently, is essential for the inspection and control of packaging materials, and has attracted more and more attention from food manufacturers, packaging material suppliers, and even consumers. At present, the detection and control of food packaging is mainly reflected in the following two aspects.
(a) strength test
The strength is a comprehensive index, which is the comprehensive expression of the tensile strength, breaking strength and deformation rate of the packaging material, the heat sealing strength of the sealing, and the composite strength of the film. The physical indexes specified in the relevant standards are also the detailed specifications of the strength requirements. . The common instruments used for this purpose are thickness gauges for precise thickness measurement of products such as film and paper, seal testers for testing the sealing effect of the entire package, and materials such as test films, composite films, and rubbers that stretch, peel, and tear. Cracking, heat seal strength and other electronic tensile testing machine. The tear tester for tear resistance test of films, papers, etc. The heat sealer for measuring the material heat sealing temperature, heat sealing time, heat sealing pressure and other parameters. It is used for sliding surface static friction of films, sheets, etc. Friction tester for coefficient determination, torque meter for turning on or off of caps, and test instruments for impact, viscous, and pressure resistance.
The continuous emergence of new products and materials for flexible packaging, continuous improvement of packaging inspection control technologies and equipment, and powerful support for controlling quality, guiding processing, and researching the properties of materials; at the same time, the digitalization of packaging quality control has enabled packaging manufacturers to have Zhang Yuxuan, package material users have evidence, food packaging quality control is no longer empty talk.
(B) barrier test
Barrier property generally refers to the barrier effect of packaging materials on the penetration of gases, liquids, and the like. Since the barrier properties directly affect the key issues such as food quality and shelf life, they are in an important position in many packaging and testing projects. Taking our common food packaging as an example, the oxygen permeability of dairy packaging is critical to the shelf life of milk. A large number of test results show that for fresh milk packaging, the oxygen permeability of the packaging is between 100-150, the refrigerated shelf-life is about 10 days, and the oxygen permeability is controlled below 5, then the shelf-life can reach 1 month or more; For cooked meat products, it is necessary not only to pay attention to the oxygen permeability of the material, to prevent the oxidative deterioration of the meat products, but also to pay attention to the moisture-barrier property of the material and to prevent the product from losing a large amount of moisture to darken the color; Foods such as instant noodles, puffed foods, etc., the barrier properties of packaging materials can not be ignored, this type of food packaging is mainly to prevent oxidation and rancidity of the product, so to be sealed, isolated air, dark, gas barrier, etc., the common packaging is mainly Vacuum aluminum coating, through testing, the oxygen permeability of these packaging materials should generally be below 3, moisture permeability below 2; there are more common atmosphere modified packaging on the market, not only to control the oxygen permeability of the material, for carbon dioxide The permeability also has certain requirements. In summary, it can be seen that the importance of packaging barrier testing in packaging quality control is increasingly prominent, and that barrier testing is in line with current global flexible packaging industry pursuit of product high barrier performance, and its design also represents the frontier of packaging inspection. technology. At present, the testing equipment used for barrier testing mainly includes breathability tester, moisture permeability tester, oxygen permeability tester, gas permeability tester, container/film oxygen permeability tester and so on.
Complete biodegradation is the future development trend of food packaging
To ensure the safety and quality of food, food packaging is one of the important components. Therefore, the selection of packaging materials that meets the requirements is even more important. The state will implement a compulsory certification system for food packaging products. This means that companies that produce plastic bags and disposable tableware must pass this certification, otherwise they will not be able to produce any more.
Qingdao Kangwen introduced the world's most advanced biodegradable technology from New Zealand, produced and sold biodegradable plastic raw materials, biodegradable plastic additive series and food packaging products, and has passed the inspection of the National Environmental Protection Product Quality Supervision and Inspection Center. Also obtained the EU biodegradable technology certification, and in full compliance with the European Union's "2002/72/EC: Food contact with plastic materials and products" directive requirements, can be safely used for food packaging. This technology has filled the technical gap in the domestic industry. The food packaging bag made of bio-plastic additives is reinforced, so that the polymer has complete biodegradability. After being left in the natural environment for 3 months to 12 months, it can be completely biodegraded and converted into carbon dioxide and water. White pollution, to achieve a true sense of environmental protection. What is more significant is that the tension, elasticity, toughness and transparency of such food packaging bags are still well maintained and can be used as normal as ordinary food packaging bags. In addition, before the product degrades, it will not affect its re-use, and it can achieve a recycling economy. This technology was successfully developed in the UK in 2003. Over the past two years, this technology has been greatly promoted and used by many countries in Europe and the United States, such as the United Kingdom, France, Italy, Germany, and the United States, and has been recognized by environmental experts around the world. And appreciate. Since the company was established in October 2005, most of its customers have come from export companies (exported to the European Union, the United States, Japan, etc.). Domestic food companies still use biodegradable plastics for food packaging.
Rapid socio-economic development, people's awareness of environmental protection and continuous improvement in production quality, the use of green packaging to extend food freshness and shelf life, reduce the impact of packaging on the environment, etc., put forward higher requirements for packaging materials, but also the food packaging industry need attention Focus issue. In this regard, the United States and the European Union have high requirements for food packaging. First, they must use genuine environmental protection products for packaging. Second, the packaging does not cause secondary pollution to the environment. Requirements not only can be recycled, save resources, but also fully biodegradable. It is believed that this is also the trend of the future development of China's food packaging industry.
A report from the US FPA shows that the US packaging market has a very broad prospect. The largest industry in the US packaging machinery is the food industry. Almost all models and models are used in the food industry. In the United States food industry, vegetables and fruits account for the largest proportion of packaging machinery each year. From 1994 to 2005, they increased year by year. In 1994, the demand proportion accounted for 18.4%, and by 2005 it accounted for 20.3%; The packaging machinery needed for meat was second; milk was the third; bread was fourth; grain was the fifth; except for meat, the annual demand value of dairy and grain packaging machinery accounted for the total demand of the food industry. The proportion of all of them showed a downward trend. The demand for packaging machinery in the food industry grew at an average annual rate of 7% between 1994 and 2000. The US food industry has introduced thousands of new products each year. This development momentum has accelerated the speed of upgrading packaging machinery. Therefore, the speed of packaging machinery used by the US food industry is always at the top.
At present, most of the new type of food packaging in the United States uses petrochemical products as raw materials, and more and more people use plastic cans and plastic bottles. Plastic products will gradually replace glass products. In some cases, they can also replace glass products and even replace glass products. The reason is that they are lighter and can reduce transportation costs. Traditional fiber packaging materials have gradually been phased out. Polypropylene films are the most likely substitute for cellophane. Semi-transparent paper and oil-proof paper will be replaced by high-density and low-density metal foils.
Today, packaging automation procedures have been widely used in the United States, such as PLC equipment, data collection systems, and so on. To cater to consumers, the US packaging industry tends to use a large amount of message labeling systems. Because the government requires packaging products to be labeled with nutrients, instructions for use, and barcodes, the labeling system is moving toward multi-purpose information. In recent years, two major changes have taken place in the field of paper packaging labels. One is the increasing demand for UV-curing outer coatings, and the other is the use of a wider range of ink colors. Many printers can print 9 colors at once. Printing more special colors and spending less.
China Packaging Internationalization and Cutting-edge Technology Trends
After China's accession to the WTO, the total volume of import and export trade surpassed Japan's leaps to third place in the world, and the characteristics of foreign trade to stimulate economic growth have become increasingly prominent. However, many domestic companies want to try to export but they have no way out. The various import and export thresholds in various trading regions have become a constraint on the development of China's export trade of small and medium-sized enterprises.
To this end, China's packaging companies should promptly understand and adapt to the technical requirements of the foreign market, and cross the foreign technical barriers.