Classification and composition of the hottest beve

2022-07-23
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Classification and composition of beverage paper packaging

in fact, pure paper packaging materials are difficult to use in beverages. Almost all the beverage paper packaging we call are composite materials as small as radio and MP3 finger paper. Composite paper packaging is widely used in beverages, especially non carbonated beverages. Dairy products are the largest application field, and fruit juice, tea and coffee are the most commonly packaged varieties with composite paper in beverages. At present, almost all major domestic milk, fruit juice and tea beverage manufacturers have paper packaging products on the market

typical composite paper packaging used in the beverage industry includes Tetra Pak and Kangmei, which use ultra-high temperature sterilization process to intercept 175 kinds of pests. Because this set of deformation unit has a single chip as the core box, as well as the international paper industry or roof bags of four countries that need to be refrigerated

in terms of composite structure, Tetra Pak or Kangmei box adopting ultra-high temperature sterilization process has high requirements for packaging materials. Generally, the 7-layer composite structure of paper/plastic/aluminum foil and adhesive layer is adopted to ensure that it can withstand ultra-high temperature instantaneous sterilization and strictly block the invasion of air and moisture. Beverages or dairy products sterilized by ultra-high temperature, also known as "sterile packaging", can be stored at room temperature, and the shelf life can reach more than one year

in terms of composite structure, Tetra Pak or Kangmei box adopting ultra-high temperature sterilization process has high requirements for packaging materials, and generally adopts a 7-layer composite structure of paper/plastic/aluminum foil and adhesive layer,

to ensure that it can withstand ultra-high temperature to kill 1 ton or more bacteria instantly, and strictly block the invasion of air and moisture. Beverages or dairy products sterilized by ultra-high temperature, also known as "sterile packaging", can be stored at room temperature, and the shelf life can reach more than one year

ultra high temperature sterilized beverage packaging is very suitable for the incomplete cold chain in China because it can be stored at room temperature, so it has developed very rapidly in China. However, the ultra-high temperature sterilization process not only brings convenience, but also affects the taste of the beverage, which will destroy or change the inherent flavor of the beverage. Therefore, in recent years, the paper composite packaging represented by the roof pack of the international paper industry has sprung up

relatively speaking, the paper packaging structure of the international paper industry is relatively simple. Because the processing technology does not need to withstand ultra-high temperature, it is generally a paper/plastic 4-layer structure without aluminum foil layer, and the barrier is not as high as 7-layer. The product shall be refrigerated, and the shelf life shall not exceed 40 days. However, the taste of the drink is maintained well, and the loss of nutrients is less. Especially with the continuous improvement of China's cold chain and sales environment, as well as the improvement of consumers' requirements for the taste of beverages, fresh-keeping paper packaged beverages have become popular in big cities. Although the proportion of paper packaged fresh-keeping beverages can not be compared with that of ultra-high temperature sterilized beverages at present, from the perspective of international development and recent development trend in China, fresh-keeping beverages will be the development focus of packaged beverages in China in the future

types of green packaging materials

1. Reusable and recycled packaging materials

reusable packaging, such as beer, beverage, soy sauce, vinegar and other packaging using glass bottles for repeated use. Sweden and other countries implement the reuse of polyester PET beverage bottles and PC milk bottles for more than 20 times. Wellman of the Netherlands and Johnson of the United States recycle 100% of PET containers

recycled packaging, such as polyester bottles, can be regenerated by two methods after recycling. The physical method refers to the direct and thorough purification and crushing without any pollutant residue. The treated plastic can be directly used for recycled packaging containers. The chemical method refers to that after crushing and washing the recovered pet, the depolymerizer methanol water, ethylene glycol or diethylene glycol is used to depolymerize the pet completely or partially into oligomers under the action of alkaline catalyst, and then the monomer or oligomer is re polymerized into regenerated PET resin packaging material after purification

the reuse and regeneration of packaging materials only prolong the service life of polymer materials such as plastics as packaging materials. When their service life is reached, they still face the problems of waste disposal and environmental pollution

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