Thinking about the advantages of plastic packaging

2022-08-16
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Thinking about the advantages of plastic packaging of dairy products

with the rapid sales of milk products, the share of plastic bottle packaging is also growing. The continuous use of HDPE or PET bottles in flavored milk, mixed fruit milk and health drinks shows the recognition of plastic bottle packaging in the dairy packaging 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

packaging requirements of dairy products

in general, different dairy drinks have very different requirements for the pretreatment, outer packaging and filling technology of their products. The table in Figure 2 shows the effect of pretreatment and filling technology on the shelf life of dairy drinks

under cold chain conditions, using clean filling technology can reach the standard shelf life of 10 days (or ESL milk with a shelf life of 21 days, fermented milk such as buttermilk, yogurt and health drinks). The requirements for the protection function of the packaging of milk drinks in its distribution, storage and sales decrease with the decrease of temperature. The protection function mainly refers to the shelf life and pretreatment requirements of the stability of milk drinks

aseptic filling technology suitable for non cold chain low yogurt products

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

for the filling of this product, sigasbfill of SIG Beverage Machinery Division launched ABF series aseptic filling system. The aseptic technology used to change chitosan into cationic polymer is to use atomized hydrogen peroxide spray technology to sterilize the packaging. 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 and hydrogen peroxide compound materials, we can produce excellent product volume and disinfection cycle with extraordinary ability. The sterilization attenuation rate of the equipment can be increased from log4 to log6

how to solve the problem of avoiding light in PET bottles of dairy products

for ESL milk and UHT milk, the barrier of light is very critical. If there is no barrier to light and the products are stored in the bright supermarket freezer, the milk will lose about half of the 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

for PET bottled dairy products, it is particularly important to avoid light. In addition to labeling the packaging bottles, there is also a more direct and effective lightproof packaging solution. 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

The low transmission rate shown by

shows that the UHT milk packaged above 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 the addition of high-grade and high-cost dairy nanoparticles has become a good method of plastic modification, and products can adopt it as their brand image

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