The hottest packaging technology supports the larg

2022-09-21
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Packaging technology supports the large market of liquid milk

in recent years, the development of liquid milk in the dairy industry is particularly eye-catching, and has become a larger and faster growing variety. Liquid dairy products include pure fresh milk, ultra-high temperature sterilized milk and fruit flavored milk. China has also experienced rapid development in this regard. While various forms coexist, there are also some problems

sterilization equipment can ensure food safety and hygiene

the data of the National Bureau of statistics shows that the output of liquid milk in China was 1245700 tons in 2000; In 2001, it was 2131400 tons; From January to June 2003, it was 2.4607 million tons. Liquid dairy products will be the mainstream of dairy consumption in the future. It is expected that China's dairy industry will develop rapidly in the next five years, among which liquid dairy products will be paid attention to because they are easy to drink and meet the requirements of modern life rhythm

the appearance of liquid milk packaging

liquid milk packaging mainly includes Tetra Pak and Kangmei box used for ultra-high temperature sterilized milk packaging, Tetra Pak pillow used for ultra-high temperature instant sterilization (UHT) milk packaging, ridge bag used for micro bacteria milk packaging, and plastic bags made of sterile composite film, such as bailibao. Glass bottles are mainly used for packaging pasteurized milk, flavored milk and yogurt. PP and PS cups are the main packaging containers for sterile compound milk

according to statistics, in China's liquid milk market in 2002, bagged milk accounted for 45% of the market share, and paper brick milk accounted for 25%; Plastic bottles account for 17%, plastic cups 7%, glass bottles 5.5%, and other packages such as tin cans account for 0.5%. Various forms of packaging present the market, contributing to a new competitive situation in the packaging market

in recent years, high-end milk packaging represented by Tetra Pak has grown rapidly in the south. While the northern and central and western regions are dominated by economical milk packaging, with plastic bag packaging accounting for 70% of the whole liquid milk market, Tetra Pak's sterile pillows and sterile plastic bags are growing rapidly in the northern market, indicating that high-quality packaging is increasingly popular in the market. Tetra Pak pillow has a high cost performance ratio, and its cost price is 0.3 yuan. At present, this technology has been widely used in developed countries for fresh milk packaging, and the normal temperature shelf life of fresh milk can reach 45 days. Milk can be kept at room temperature for more than a month without adding preservatives

the roof box is beautifully printed and suitable for filling high-end products such as fresh milk, fancy milk, yogurt and lactic acid bacteria drinks with high nutritional value and fresh taste, but it needs to be refrigerated and fresh-keeping, and the shelf life is relatively short. But the cost is low, about 0.48 yuan. This package is becoming more and more popular in big cities. The sales volume of the whole roof box milk market in 2002 increased by 30% compared with 2001, reaching 410000 tons, and there was still a growth rate of more than 20% in 2003

Baili bag is a new low-cost packaging form, with a cost price of 0.12 yuan to 0.13 yuan. Since the summer of 2002, this kind of aseptic composite membrane packaged dairy products has been sought after by the market. However, some insiders believe that Baili bag is only a transitional product with low grade, and will eventually be replaced by products such as roof box. Plastic bag packaging is a choice for small dairy production enterprises to reduce costs, and its cost is only 0.04 yuan. However, due to its poor image, it will gradually be eliminated by the market

at present, pasteurized milk accounts for 60%, ultra-high temperature sterilized milk 21.1% and cheese 19% of liquid dairy products in China. Among them, ultra-high temperature sterilized milk showed an obvious upward trend, mainly due to the long shelf life of ultra-high temperature sterilized milk, diversified packaging, convenient storage and carrying. Pasteurization method is used for milk in glass bottles, plastic bags and roof cartons, which are common in the market. The disinfection time is moderate, which can effectively control the number of bacteria within 30000 per milliliter specified by the state, and maintain the taste of milk. Pasteurized milk (bagged/house shaped) also has factories in fowlerville, Michigan, Sandusky, Ohio and Blacksburg, South Carolina. Toxic milk is also called pasteurized milk. After several seconds of killing bacteria at about 80 ℃, it needs to be stored in cold storage. The shelf life is generally 1-7 days; When the storage temperature exceeds 4 ℃, the bacteria in milk can reproduce, so it cannot be stored for a long time at room temperature

progress in liquid milk packaging technology

many experts affirmed the contribution of UHT processing technology to the development of China's dairy market. The market share of sterilized milk is expanding because UHT processing technology can alleviate the problem of uneven geographical distribution of milk sources in China. In terms of the regional distribution of milk sources in China, they are mainly concentrated in the northeast, North China and northwest. There are few milk sources in the economically developed areas in the South and coastal areas. Without UHT, it is difficult for regions with high-quality milk sources to transport milk to the markets with large milk consumption in the South due to the short preservation period of milk. UHT solves the problem of difficult transportation, storage and preservation of liquid milk. At present, this technology has been widely used in developed countries for fresh milk processing: heat the milk to more than 135 ℃, keep it for only a few seconds, and then quickly drop to normal temperature. Then, under sealed sterile conditions, it is filled and sealed with 6 layers of paper aluminum plastic compound sterile packaging materials, and all bacteria and microorganisms that affect the deterioration of milk will not contact it. Some people worry that the nutrients contained in milk will be destroyed after high-temperature disinfection. In fact, there is no need to worry. The bacteria in milk are all killed in an instant of high temperature, while most beneficial substances lose little in a short period of high temperature. It maximizes the nutritional composition of milk, kills bacteria, solves the problem of keeping fresh, and enables people to enjoy milk more conveniently and safely

the progress of liquid dairy packaging technology is of great significance to large dairy production groups, but improving the shelf life is a contradiction with maintaining the taste of liquid dairy products and maintaining appropriate costs. The emergence of sterile blow molding bottles and sterile filling technology has found a balance. Blow molded sterile plastic bottle is a kind of plastic bottle which is completely sterile inside and free of yeast and other loose particles. Due to the sealing of the bottle mouth, the bottle is always kept sterile during storage and transportation to the sterile filling machine. It is only necessary to disinfect the outside of the bottle with sterile liquid before filling, so as to ensure that the whole processing process, such as re opening, filling and secondary sealing, is carried out in a sterile state. Sterile blow molded bottles for liquid dairy products are usually made of 3 or 6 layers of HDPE

techne's multi-layer coextrusion technology was initially used to solve waste leftover materials, mainly to reduce the use of raw materials and recycle 10% - 30% of the materials in each container. Later, it was widely used in the manufacture of dairy blow molding bottles. The inner and outer layers of the 3-layer bottle are white, and the middle layer is black, which plays the role of UV resistance. The shelf life of the product is 3 months without refrigeration. EVOH barrier layer is added to the 6-layer bottle, and the shelf life of the product can reach 6-9 months

in June, 2003, skanemejrier dairy company in Sweden launched a new product package with a capacity of 2 liters blow molded packaging bottles to the market. The packaging bottle is made of a synthetic resin called eco lean, calcium carbonate higher than 40% and high polyethylene. The reason why this kind of bottle is considered new is not only that the petrochemical raw materials it uses are less than 40%, but also that the additives it uses make it have the characteristics of fast cooling speed and enhanced hardness, which is different from most of the packaging of dairy products in the past. This new environmentally friendly resin material is not only used in food packaging in Sweden, but also recognized in the European Union. It is reported that the eco lean packaging bottle adopted by the company will replace the original dairy packaging bottle

problems in liquid milk packaging

packaging is too monopolistic

at present, the sterile packaging used by domestic dairy and beverage industry giants such as Guangming, Yili, Sanyuan, Mengniu, Wahaha, Huiyuan and so on are Tetra Pak, accounting for more than 90% of the market share. Yili company alone used Tetra Pak sterile bags of 1.48 billion yuan in 2002. For more than 20 years, Tetra Pak has gained more than 95% of the market share of China's filling machine market, forming a monopoly position. According to statistics, China's annual consumption of sterile cartons is 10billion packages of packaging materials, with a price equivalent to nearly 4billion yuan, accounting for about 10% of the global market share, and increasing at a rate of 20% to 30% every year, becoming the world's largest and fastest-growing market. By 2004, Tetra Pak's production capacity of sterile packaging boxes in China will increase from the current 1.2 billion packages to 6billion packages

the packaging cost is too high

with the surge in production, the profit margin of dairy enterprises has not increased significantly, and the packaging monopoly is an important reason. Experts pointed out that in shopping malls, 1/3 of the cost of a package of fresh milk is paid for packaging. According to the listing report of Yili company in 2003, packaging accounts for 40% of the total sales cost of Yili

according to the estimates of authoritative institutions, Tetra Pak's profit margin is about 20%, which is several times higher than that of some competitors. For example, Elopak in Norway was about 6.5% in 2001. The measurement range of SIG combibl experimental force: 5% ⑴ 00% force value accuracy: better than the indicated value ± 1%oc by about 12%. A domestic beverage company revealed that the company would pay 0.2 yuan for each package of liquid milk produced because the packaging was too expensive. If 250 ml brick bags are localized, each bag can save 0.1 yuan, which means that dairy enterprises can make an extra profit of 400 yuan per ton of milk. This phenomenon has aroused the attention and concern of the industry, because the high packaging cost will restrict the development and competition of the whole industry

in addition, at present, the sterile packaging of liquid milk in China mainly adopts imported equipment, the cost is too high, and the price of liquid milk remains high, which restricts the healthy development of production and consumption. Experts in the dairy industry believe that as a country with "poor milk", the breakthrough to solve the development of China's dairy industry is to develop liquid milk production, and the key is to break the current situation of relying on imports for sterile packaging

large proportion of reduced milk

at present, more than 60% of UHT milk and flavored milk produced by enterprises are reduced from milk powder. The freshest pasteurized milk on the market is only about 70% pure milk. According to relevant national standards, yogurt and sterilized milk can be made from fresh milk or reduced milk, but pasteurized milk cannot be made from reduced milk. In other words, the ultra-high temperature sterilized milk that ordinary consumers drink is likely to be processed from reduced milk. Its disadvantage is that the production temperature of milk powder is high, the heat preservation time is long, and the nutrition loss is higher than that of any pure liquid milk. When milk powder is reduced to liquid milk and processed, the nutritional loss is greater

the reasons for this situation: first, the price of pasteurized pure fresh milk in China has been unable to rise. The price difference between ordinary liquid milk and pure fresh milk in China is only oneortwo cents, while the price of pure fresh milk in foreign countries is significantly higher than that of ordinary milk. Second, the relevant domestic laws and regulations are not perfect. At present, many countries stipulate that if milk powder is used to produce milk, the amount of milk powder must be indicated on the label to protect the interests of consumers. However, until today, China has not issued relevant laws and regulations or special policies to protect the sale of fresh milk. Therefore, the milk powder added by some illegal businesses has increased from 10% to even 100%. Third, the milk powder market was severely hit by a large number of imported milk powder at low prices. At present, the CIF import price of foreign milk powder is maintained at the price of 15000 yuan/ton. One ton of milk powder can be reduced to 8 tons of liquid milk, while the purchase price of 8 tons of milk in Guangdong alone is 25000 yuan. Driven by interests, many enterprises have increased the use of imported milk powder

sterile packaging is not popular

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