The hottest milk plastic bottle packaging creates

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Milk plastic bottle packaging creates new value

more and more dairy drinks use plastic bottle packaging. Among them, the barrier performance and shading performance of the packaging bottle and the correct filling technology are the key

although UHT milk has always been packaged in cartons, the share of plastic bottle packaging in the fresh milk market is growing in recent years. For example, the use of HDPE or PET bottles in flavored milk, mixed fruit milk and health drinks shows that the market recognizes them

looking at UHT milk drinks, the annual growth rate of UHT milk drinks packaged in PET bottles alone exceeded 100%, from 4 million liters in 2003 to 74 million liters expected in 2007. In addition, the growth rate of HDPE packaging has also reached 14%, which fully shows that the growth rate of plastic packaging dairy drinks is faster than the average development rate of the market. Understand the operation method of lower wire rope tensile testing machine

in addition, the development of popular dairy drinks is also very rapid. Milk becomes a new type of energy drink after adding fruit juice, vitamins or other value-added additives. Pet has gradually become a new favorite of packaging when promoting these new beverages to the market. Pet has occupied a certain dairy packaging market because of its glass like absolute transparency and high gloss, which makes the packaging more attractive, more brand value and distinctive. In the highly competitive market environment, compared with other plastic packaging, pet has better barrier performance

dairy products in the cold chain environment

in general, dairy drinks have very different requirements for their own pre-treatment, packaging and filling technology. Under cold chain conditions, the standard shelf life of 10 days can be reached by using clean filling technology (or ESL milk with a shelf life of 21 days, fermented milk such as buttermilk, yogurt and health drinks). The protection function requirements of milk drinks for their packaging in distribution, storage and sales will decrease with the decrease of temperature. The protection function mainly refers to the stable shelf life and pretreatment requirements of milk drinks

in the cold chain environment, the high barrier requirements of UHT milk to light do not need to be considered, so the products can be packaged in transparent PET bottles. If the requirements for shading performance are not high, you can also use a labeling machine to label or add a certain proportion of white titanium dioxide to PET material when using an injection molding machine to produce bottle embryo. Compared with other plastic packaging, pet can also provide certain oxygen barrier as needed

in flavored milk, the use of different additives/essence will lead to changes in taste, so the requirements for shading in the packaging of these products will be reduced. At the same time, if the filling of such products that cannot form a deep interface dispersion and mechanical interlock is changed from clean filling to sterile filling, its product shelf life will be extended correspondingly

non cold chain low acid products

UHT milk drinks, if stored and sold at room temperature, the situation is much more complicated. At this time, the requirements for the protection and filling technology of low acid products are extremely demanding, because under low acid conditions, bacteria and microorganisms are easy to survive and grow at room temperature

the aseptic technology used in the ABF series aseptic filling system provided by sig asbofill of SIG beverage machinery division is to sterilize the packaging by using the spray technology of the atomized hydrogen peroxide model: microcomputer controlled (fully automatic) wood-based panel universal experimental machine. The equipment integrates bottle sterilization, aseptic filling and aseptic capping or aluminum foil capping, with a maximum filling output of 12000 bottles/hour

now this filling system has been widely used in the aseptic filling of low acid products such as UHT milk, milk drinks, milk coffee, flavor milk, yogurt and so on, and has achieved great commercial success. An important advantage of SIG asbofill ABF system is that the sterile area is very small, which makes the control and maintenance of sterile area simple and safe. During the production and operation of the equipment, the bottle body is transported outside the sterile area, and only the mouth of the bottle is placed in the sterile area for aseptic filling. The sterilization process is to spray a mixture of atomized hydrogen peroxide and sterile air in a certain proportion in the bottle and keep it in the bottle for a certain time for oxidation; Then, through the oxidation of hydrogen peroxide to achieve the sterilization effect in the bottle, at this time, the microorganisms in the bottle are removed. Finally, the atomized hydrogen peroxide residue in the bottle is brought out of the bottle through sterile hot air. In addition, according to the adjustment and transformation of different process parameters, such as temperature, hydrogen peroxide dose and disinfection cycle, the sterilization attenuation rate of the equipment can be increased from log 4 to log 6

outstanding pet aseptic packaging scheme

the combination of aseptic filling technology (SIG asbofill) and PET bottle blowing technology (SIG copperas) provides customers with a high-quality pet bottle aseptic packaging scheme, which not only meets the unique requirements of milk for microbial quality, but also ensures the maintenance and protection of vitamin content and taste of milk drinks by packaging. SIG asbofill, with its extensive experience in the field of aseptic milk filling, can create a flexible, compact and effective aseptic filling production line for customers whose new functional materials are the foundation and leader of national economic, social development and national defense construction

for ESL milk and UHT milk, the barrier of light is very critical. The penetration protection of oxygen only needs to keep the minimum requirements, because the dark environment will inhibit the negative reaction of oxygen. If there is no barrier to light and let it be stored in a bright supermarket freezer, milk will lose about half of its vitamin B2 nutrients in the first 12 hours. In addition, light can also destroy the protein components in milk, and make the milk produce a metallic taste within 2-4 hours after the chemical reaction, that is, the so-called "light damaged taste"

sig copperas' research found that there are many ways to improve the light barrier performance of PET packaging. Common methods include: increasing the content of titanium dioxide in PET resin and using white + Black + white multi-layer PET bottle packaging. This kind of packaged UHT milk can fully block the effect of light within its predetermined shelf life, and extend its shelf life to 4 months. However, because the comprehensive cost of this scheme is higher than that of the current traditional multi-layer carton packaging (such as sig kangmeibao sterile carton packaging), only high-grade and high-priced dairy products can adopt it as their brand image

successful application cases of low cost

to reduce the cost of pet, it is a good choice to use other blow molding and stretching plastic packaging materials instead, such as PP. Using multi-layer PP bottle packaging can also successfully block light. However, PET bottles are increasingly selected for the packaging of dairy drinks

a successful example is NOM company in Austria. In addition to the traditional packaging of dairy drinks, the company also produces various novel dairy drinks packaged in PET bottles for the market, such as the famous "fast" brand weight loss milk series in the market. This product is a functional beverage jointly developed by the company and some famous doctors and nutritionists. It is not only sold all over Austria, but also supplied to the local market at the discount supermarket Aldi in Germany and other chain discounts in the world, even in China

nom has used PET bottles to pack most of its dairy drinks for many years, using the blumax III series bottle blowing machine of SIG copperas, one blumax 10 and two blumax 12. "The bottle blown out is very light and easy to repeat. It is very suitable for drinking many times. Our customers are also very satisfied." Said Artur hartlieb, marketing director of NOM. In addition, he also introduced the successful 125ml health milk beverage in the market. The empty PET bottle used for packaging weighs only 8.5g, which is the lightest bottle shape ever produced by sig copperas bottle blowing machine

in the iced coffee beverage market, "Nescafe Xpress" is undoubtedly the market leader. The beauty of ready to drink coffee series lies in the variety of flavors, ranging from black, white, cocoa, vanilla and latte Macchiato. At first, these products were packaged in 250ml aluminum cans, and now the packaging of 250ml PET bottles is also growing rapidly, which is mainly due to Nestle's installation of SIG asbofill straight-line sterile filling production line in its biessenhofen factory, thus finally realizing the dream of PET bottle packaging

for low acid products with a pH value of 4 to 7, the ten pass straight-line aseptic filling equipment ABF with a capacity of 12000 bottles/hour is an ideal solution, which makes low acid products get rid of the limitations of the "cold chain method". Due to asbofill's special design and bottle mouth treatment, it can meet the filling of plastic bottles of different sizes and shapes in just a few minutes. The operation from PET bottle filling to HDPE bottle filling is also very simple and fast

milchwerke mittelelbe factory, located between Hannover and Berlin, also uses a large number of PET bottles to package its popular mixed dairy drinks, such as latte Macchiato, cappuccino, trink fix supershaker, etc. Moreover, UHT milk drinks are aseptically filled on the ABF 710 ten channel aseptic filling machine of SIG asbofill. The shelf life of the drink can be as long as 7 months

source: agricultural products processing

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