The most popular plastic packaging in China to exp

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With the development of plastic raw materials and processing technology, plastic has occupied an important position in the field of packaging, and all kinds of plastic packaging have also taken the lead in plastic products. More information than other plastic products has changed the growth rate of fatigue testing machine 1. The experimental machine with high accuracy requirements has developed rapidly in the packaging industry, such as plastic film, woven bag, composite film, plastic sheet, etc. Nevertheless, in some special fields, glass packaging is still in the dominant position, and it will take time for light and beautiful plastic flexible packaging to enter this part of the market on a large scale

first of all, China's can packaging market, glass bottles and metal cans firmly occupy the dominant position. Of course, in recent years, with the development of flexible packaging materials and processes, flexible packaging cans have also begun to appear sporadically, but the market share is very small. The main factor that hinders the plastic packaging from playing a big role in the field of cans is the price. The shelf life of canned food generally reaches about one year, so the outer packaging is required to have a strong barrier; For some foods to be sterilized at high temperature, they should also have good high temperature resistance; Another is to have the same high transparency as glass, so that consumers can directly see the product. However, the plastic composite flexible packaging products that can meet the above requirements (mainly including the coextrusion of PE and barrier materials, one layer of CPP and PE composite plastic bags for standby) are expensive. According to the data, the import price of these products is about 5 yuan/piece, and the cans with flexible packaging are mainly used for export. Canned food packaged is also mainly used for export. It is a necessary way for canning manufacturers to reduce their costs to realize localized procurement of packaging products. However, domestic products generally have problems such as short shelf life, poor toughness and explosive bags. In foreign developed countries, plastic flexible packaging cans are favored by consumers because of their small packaging, easy to carry and easy to open. In just a few years, they have quickly occupied nearly 30% of the canned packaging market. In the domestic market, cans are mainly packed in bulky glass bottles and tinplate that are difficult to open. Small plastic packaging will have good market development potential

secondly, whether the safety belt is qualified or not is very important in China's infusion bottle market. After decades of application, glass infusion bottles have rapidly abdicated to plastic infusion bottles, but they all have a common weakness - they are hard packed containers, which requires introducing air to generate pressure during the infusion process to make the medicine drip out, thus greatly increasing the possibility of secondary pollution during the infusion process, especially in hospitals with more miscellaneous bacteria. The flexible multi-layer coextrusion film infusion bag can solve this problem. The medical grade polyolefin multilayer coextrusion film is melt cross-linked coextrusion of multilayer polyolefin materials under clean conditions at the same time. Adhesives and plasticizers are not used in the production process. The cylindrical film is always kept closed to avoid pollution. This kind of membrane material has high temperature resistance (can be sterilized at 121 ℃), good light transmittance, good elasticity, fall resistance, and good barrier performance to water vapor, oxygen and nitrogen. It is suitable for filling various electrolyte infusion, nutritional infusion and therapeutic infusion, and does not contain chloride. It does not affect the environment during post-treatment. It is the development direction of infusion packaging materials

there is also the old beer packaging problem. Glass bottle packaging has been used for beer packaging in China for many years, and bottle explosion incidents occur almost every year, although "Even if we can't 'eat it dry and squeeze it out', the market also uses cans and barrels for packaging. However, the total amount does not exceed 5%, and plastic packaging forms such as PET bottles and flexible packaging came into being. Compared with canned packaging, beer packaging requires better freshness and oxygen barrier, as well as certain pressure bearing capacity. At present, the world is focusing on developing pet plastic bottles as alternative products, but the technology is not yet fully mature, such as bottle mouth The degree of influence on beer quality from the aspects of sealing, pressure resistance procedure and anti permeability is still being explored, so domestic enterprises are still in the wait-and-see and experimental stage. With the diversified development of consumer demand, beer packaging is also closer to consumer demand, and tends to be packaging products that can effectively maintain the stability of beer quality, low price and various forms. There are demands for various packaging specifications and styles. For example, not long ago, bagged beer, as a supporting product of barreled beer, was widely welcomed in Qingdao. When customers buy beer, they directly choose plastic bags for packaging. It can be predicted that if plastic flexible packaging or PET bottles are used to replace glass bottles, it will be easier to meet the different needs of consumers in terms of capacity and shape

glass bottles have poor stability, are fragile, are not conducive to transportation, and consume a large amount of energy. Plastic packaging instead of glass packaging is an inevitable trend for the packaging industry to develop towards lightness and durability. Compared with plastic hard packaging, plastic soft packaging is more competitive because of its light weight, softness, less waste, small space occupation, low cost and resource saving. The composite flexible plastic packaging material is developing rapidly because of its superior comprehensive properties. At present, there are more than 4000 flexible plastic packaging enterprises in China, and the domestic production capacity of composite film has exceeded 1.5 million tons. Composite flexible plastic packaging materials have become one of the more mature main packaging materials in China, and have penetrated into all fields of national life. In the field of glass packaging dominating the world, plastic flexible packaging has emerged and is waiting to show its talents

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