1, milk
Because milk is easy to deteriorate, both long-acting milk (UH) and fresh milk put forward higher requirements for packaging. Packaging with long shelf life, good quality and good image is very popular, and people have higher and higher requirements for the quality of milk packaging. In recent years, the high-grade milk packaging represented by Tetra Pak has grown rapidly in the south, while the economic milk packaging is mainly used in the north and central and western regions, and plastic bag packaging accounts for 70% of the whole liquid milk market. However, the aseptic pillows and plastic bags produced by Tetra Pak are growing rapidly in the northern market, indicating that high-quality packaging is increasingly welcomed by the market. The fresh milk packaged by Tetra Pak Pillow adopts ultra-high temperature instant sterilization composite packaging technology. At present, this technology has been widely used in packaging fresh milk in developed countries, and the shelf life of fresh milk can reach 45 days at room temperature. The technology is to instantly sterilize high-quality fresh milk at ultra-high temperature as high as 135 degrees, and then fill and seal it with six-layer paper-aluminum-plastic composite aseptic packaging material under sealed aseptic conditions. All germs and microorganisms that affect the deterioration of milk will not come into contact with it, and milk can be stored at room temperature for more than one month without preservatives.
The roof box is beautifully printed, which is suitable for filling high-grade products with high nutritional value and fresh taste, such as fresh milk, colored milk, yogurt and lactic acid bacteria drinks. The package of the roof box has the words "2-4℃ warranty 10 day". Compared with Tetra Pak, the short shelf life limits its long-distance transportation. However, because the roof box is paper-packed, the cost is low. During the period of 1994, International Paper took the lead in introducing roof box packaging into China market. Shanghai Guangming, Beijing Sanyuan, Inner Mongolia Yili, Hangzhou Jinding and other important domestic dairy producers have successively cooperated with international paper industry to open up the roof box packaging market. In recent years, on the basis of the continuous improvement of the domestic cold chain system, the sales volume of fresh-keeping packaging products for roof boxes in the market has been greatly improved.
2. beer
In recent years, the application of heat-resistant polyester bottles (PET) in beer packaging industry has developed rapidly, especially the application of coating technology (plasma technology) on PET bottles. The carbon layer thickness of the coating is 0.2 1mm, and the air permeability is almost the same as that of glass. At the same time, it can resist high temperature sterilization, expand the application range and adapt to the packaging of hot-filled tea drinks. In addition, the new PET bottle of polyethylene naphthalate (PEN), which has attracted the attention of the packaging industry, is entering the beer industry, causing a revolution in beer packaging (overcoming the explosion of beer bottles). Because the molecular structure of PEN is similar to that of PET, naphthalene ring is used instead of benzene ring, which makes PEN and PET have better permeability resistance, ultraviolet protection, good heat resistance and high temperature resistance (the thermal transition temperature of amorphous PEN reaches 100℃, while that of PET is only 70℃). Because naphthalene is separated from coal tar, it is rich in domestic sources and will be industrialized soon. Soon, PEN entered the packaging field in large quantities, which triggered another packaging revolution after PET. At present, domestic imports are small, but the price is five times that of PET, which hinders the application of PEN.
The production and consumption of beer in the United States has been the first in the world for many years. Beer packaging containers are mainly metal (aluminum) cans and glass bottles, but the consumption of plastic (PET) bottles has increased rapidly in recent years, and glass bottle packaging has also gradually increased in recent years. An important reason for the increase in its consumption is the substantial increase in the proportion of high-grade beer.
Next, is the beer packed in glass or plastic? At present, the technology of plastic bottles has almost overcome all technical problems, and the shelf life is enough to meet the requirements of sales. The key to deciding the problem now is whether consumers approve or not. China is the second largest beverage market in the world, and the demand for beer packaging will be huge. Packaging machinery manufacturers are ready to provide the latest technology of beer PET plastic bottling system.
Step 3: juice
Australian researchers have successfully developed a fruit juice packaging cup with high shielding performance, which has been used by fruit processors and achieved remarkable results. This kind of packaging cup, which mainly packs fruit juice and jelly, has been sold in supermarkets in large quantities, and its shelf life is 18 months. Cup packaging is a three-layer extrusion structure, including a layer of PP, an EVOH layer and an adhesive layer. The outer layer PP can absorb ultraviolet rays, and the transparent packaging cup has high shielding performance, which can prevent fruit juice and jelly from changing color under light. The cup is covered with a transparent film, which can be filled hot or boiled. The thermoformed deep drawing cup adopts monochrome or bicolor gravure printing, and the transparent film cover and cup body can be partially printed. The cup is wrapped in a paper sleeve and can be printed in 6 colors. With a diameter of 98.4mm and a depth of 105mm, it can replace some metal cans for packaging fruit juice and jelly, and has a very broad application prospect.
The fully sealed fruit juice filling equipment developed by a company in Wisconsin, USA, can ensure that the fruit juice is not adversely affected by hot air and steam from the filling line to the packaging process. When the filling temperature is lower than 250°F, it can still meet the sterilization requirements and maintain the stability of filling. The temperature below 250°F can ensure that the filled plastic bottles, especially HDPE bottles, will not collapse when filling vertically. Because filling and filling are completely closed, the PH value of fruit juice acids such as citrus acid is kept at a low point, which is suitable for packaging low-acid drinks. HDPE bottles are molded by * * * extrusion blow molding, and the filling speed is 32 ounces and 200 bottles per minute. The bottle-making equipment adopts Foiler2450 column machine with sealing device, and adopts fully sealed box membrane to ensure sealing. This equipment consumes 4 kilowatts of electricity.
4. Tea drinks
At present, modern science and technology have broken through many difficult problems in tea beverage production technology, and packaging and storage have become the key that manufacturers must pay attention to. At present, the popular tea beverage packages in the world include glass bottles, metal cans, paper-aluminum-plastic composite brick tetra pak and polyester bottles (PET
Pen) and so on. Metal three-piece cans, tetra pak and PET bottles are widely used in China.
Most domestic tea beverage manufacturers have established three-piece can production lines. Metal cans have the advantages of small loss of processing adaptability, excellent barrier performance and bright colors in packaging and printing. However, its production cost is high, and the requirements for internal coating are more stringent, because canned tea often has problems due to uneven coating in the can, and it does not meet the requirements of environmental protection when discarded. In addition, due to the limitation of resources, market, capital and technical conditions, the national industrial policy is not allowed to be widely promoted, but there is still a certain demand in large and medium-sized cities. Paper/aluminum/plastic composite tetra pak is a popular packaging form in Taiwan Province Province. Most Taiwanese businessmen also bring this kind of packaging when they invest in the mainland. However, due to the difficulty of recycling this kind of packaging, it is necessary to develop alternative packaging materials.
PET is a pressure-resistant polyester material with low price, good transparency, air tightness and pressure strength. When Shanghai Suntory Meilin Company launched the bottled oolong tea beverage, it also used the PET bottle produced by this equipment. Because people in China pay special attention to tea drinks, when launching new tea drinks, manufacturers should give full consideration to local tea drinking hobbies, tastes and product characteristics, and at the same time, create personalized packaging of tea drinks different from ordinary soft drinks, especially polyester packaging with excellent performance, elegant appearance and convenience.
There are many kinds of packaging containers for Japanese tea drinks, including PET bottles, aluminum cans, tin cans, glass bottles and paper containers. However, PET bottles have become the first choice and the most important packaging container for Japanese tea drinks. Tea drinks packaged with PET account for 67. 1% of all tea drinks in Japan.
Present situation of foreign beverage cans
/kloc-At the beginning of the 9th century, many people began to study self-cooling tanks. Although some packages claiming to have self-cooling function have been patented, these technologies and patents have not only failed to solve the effective self-cooling problem of beverage cans, but also failed to solve environmental protection problems such as recycling and no pollution to the environment. At the same time, many problems in quality, safety and reliability have not been solved. So we haven't seen an industrialized self-cooling water tank technology, so that people can really start using it and enjoy it anytime and anywhere.
As early as last year, CHILL-CANN.V (CCNV for short) announced that it was time to really start using self-cooling water tanks. This is not only the gospel for consumers, but also provides a good opportunity for beverage production enterprises and packaging production enterprises to upgrade their products and technologies, thus expanding market sales. After nearly nine years' research and tens of millions of dollars' investment, CCNV finally developed and produced the world's first beverage can with patented technology, which truly realized the function of automatic refrigeration. The self-cooling water tank is very convenient to use. As long as the plastic button at the bottom of the beverage can is pressed, the temperature of the beverage can be lowered 15℃ ~ 20℃ within 3 ~ 5 minutes. Working principle of self-cooling tank Self-cooling tank mainly uses a patented heat exchange system (HEU) to realize the function of automatic cooling of beverage tanks. HEU includes many components, such as beverage tank, built-in HEU container, activated carbon and carbon dioxide gas. The working principle of HEU is very complicated. HEU should keep the activated carbon that absorbs CO2 stable. When the internal pressure of HEU drops, CO2 can be released effectively to absorb heat. CCNV company not only solved the problem that HEU can be effectively used as a heat conversion device, but also can be made into a beverage can, and also solved the energy conversion problem between two cans. Its CO2 charging and discharging technology under different air pressures and the elimination of pollution caused by melting and releasing of raw materials have all reached the world innovation level. In order to keep the beverage cool for a long time after the refrigeration function of the self-cooling tank is started, they adopted HEU continuous refrigeration technology, which can keep the beverage tank in a low temperature state for a period of time. This function of rapid cooling and continuous heat preservation can not be realized by traditional refrigeration technologies such as refrigerators.
In order to make the self-cooling tank technology meet the requirements of mass production and other industrialization, CCNV also designed and invented the self-cooling tank equipment production line and product quality inspection procedures and equipment, with a design capacity of 150 pieces per minute. The first self-cooling water tank production demonstration line was built in New Jersey, USA. They are working hard to establish international technical standards for self-cooling tanks. The invention and technology of self-cooling cans will bring new ideas and revolutions to the world beverage packaging. Therefore, the company's products were rated as 1997 canned honorary products by American Canning magazine, listed as environmental protection products by the US Environmental Protection Agency, and recognized and used by NASA and the US Department of Defense.
Present situation of domestic beverage cans
At present, the domestic self-cooling water tank has also made gratifying achievements. Shanghai Huadong Food and Beverage Industry Research Institute has successfully developed a new generation of "self-cooling (self-heating) beverage cans", which has been rated as recommended products by China Food Science and Technology Research Institute. According to experts, this self-cooling tank is actually an integral dynamic structure made of the principle of absorbing cold and heat. Through the knob switch outside the tank, the liquid reactant quickly reacts with the refrigerant in the tank, so that the temperature in the outer cup drops or rises rapidly, and then the temperature is conducted to the beverage in the inner cup, so that the beverage drops or rises to 43℃ ~ 50℃ within 10℃ ~ 15℃. In this way, consumers can drink the drinks they need in a short time. The edible part of this self-cooling can product is packed in a polypropylene plastic cup for food, the outer layer is a common polypropylene plastic cup, the interlayer is filled with refrigeration material, and the finished beverage is packed in a corrugated box. After the product went on the market, "self-cooling cans" were well received by consumers. Therefore, on the basis of the first generation products, the second and third generation products of "self-heated cans" and "self-cooled cans" will be launched one after another.
According to experts' calculation, the cost of producing a bottle of this self-cooling can beverage is 1.3 ~ 1.65 yuan, and the market price is 3 ~ 6 yuan. Of course, if the output of the enterprise is large, the cost will be reduced, which is equivalent to the current price of beverages, and the price difference is not big, which is easy for consumers to accept.
Market development of new cans Self-cooling cans are a brand-new product, which will definitely create a new market for enterprises after development and promotion. As far as the consumption of cans in China is concerned, China has only 4.6 cans per capita, which is incomparable with the average level of 380 cans in the United States, and the market potential is huge. Especially in China, a developing country, the popularization rate of refrigerators is not too high, the use is not wide enough, and the population is very mobile. The idea of getting chilled drinks anytime and anywhere is very suitable for China. Self-cooling cans can also reduce the investment cost of cold drink vending machines, hotels and other service facilities. At present, Heineken Heineken Beer will become the first user of self-cooling cans in Europe. It will purchase 85% of the output of self-cooling cans in the first year of CCNV and take the lead in using self-cooling cans in European beer packaging. Coca-Cola, Pepsi and other beverage giants also held cooperation talks with CCNV on the use and investment of self-cooling tank technology.
In addition, Nestle UK recently introduced a new concept of 330ml "automatic heating milk coffee can". The principle is that water and quicklime are put into the interlayer of the tank respectively, and heat is generated through chemical reaction. In this way, the volume of the tank is reduced, and it can hold 2 10 ml of liquid beverage. When the finished cans arrived at Nestle factory, the cans were not filled with any chemical reactants. When milk, coffee and drinks are filled into cans in the traditional way, the semi-finished products are transported to a nearby thermal energy processing plant for a series of complicated filling work, and then the cans are sealed, labeled and boxed. This process includes quantitative filling of hot reactants, and then sealing to ensure that quicklime water will not leak.
For the convenience of consumers, a circular pull ring is designed at the top of the jar. The heating process is controlled by the button at the bottom. In about 3 minutes, the beverage can reach 60℃. In order to prevent consumers from being scalded by hot drinks, the outer layer of the can has a corrugated isolation layer and a specially designed shrink sleeve. The shrink sleeve has high transparency and is printed with 9-color photographic plates, which is very beautiful. In addition, self-heating sake cans have appeared in Japan. At 1/5, there is an interlayer at the lower part of the tank. The interlayer is filled with quicklime and a small bag of water, which is packed in a sealed plastic film. Before drinking, as long as you insert an "attached" plastic stick from the lower hole, water will immediately mix with quicklime to generate a lot of heat, and a can of sake can be heated to 58℃ in just 3 minutes.
The world produces nearly 65,438+0 trillion liters of beverages every year. These drinks use different packaging materials, such as glass, plastic, paper products, metal and so on. In the use of metal cans, 25% ~ 30% are sold through convenient small supermarkets and cold drink vending machines, equivalent to nearly 60 billion cans. At present, it is increasing by 5% every year, which shows people's extensive interest in the convenient use of metal cans. Self-cooling cans can not only meet the growing demand for convenient beverage packaging, but also have value-added functions, so their market prospects are very attractive. In the fierce market competition, whoever owns the products with updated technology in all aspects of cans first will have a certain opportunity in the can market and occupy a certain leading position in the increasingly fierce market competition.