The secondary packaging of beverages described in this article specifically refers to the packaging and sealing process carried out after bottling, sealing, and labeling of beverages. Generally, there are two methods: packing and film covering. Initially, it existed for the convenience of transportation, but later it also derived features that are conducive to visualization and bundled sales. There are currently three common forms of beverage packaging: metal canned, boxed, and bottled (plastic, glass). In secondary packaging, cardboard boxes can be used for packaging, and equipment such as sealing and packaging machines and sealing machines can be used; Beverages packaged in metal cans, paper boxes, and plastic bottles can be packaged using a film wrapping method, which requires the use of a heat shrink film packaging machine.

Compared to the two types of secondary packaging, cardboard packaging has a wider range of applications, with earlier technology and more mature equipment and processes. It mainly targets distributors and is sold by opening and retailing in the later stages. However, since the end of last year when the cardboard industry began to soar, raw material prices have become a factor that many businesses have to consider; Although film packaging has a narrow scope of application and heat shrink film packaging machines appeared relatively late, the raw material is mostly PE film, which is relatively cheap, and when facing consumers, it is usually bundled and sold as a whole. Therefore, it has become an increasingly popular packaging method for beverage companies.

The heat shrink film packaging machine is usually used in conjunction with a film sealing and cutting machine. The film sealing and cutting machine installs shrink film on the outside of the product and seals it. It then enters the heat shrink machine for heating, causing the packaging material to shrink and tightly wrap around the product. The packaged items have a certain degree of anti fouling and impact resistance. Different beverage companies on the market have different requirements for beverage packaging bottles (cans), such as 6 bottles, 12 bottles, 24 bottles, etc. Therefore, it is required that the film sealing and cutting machine and heat shrinking machine adapt to market requirements.

Because the secondary packaging process is carried out after food packaging, in order to ensure the continuity of the entire line, it is necessary for the secondary packaging to keep up with the speed of filling and sealing and achieve automation. According to the author's understanding, Beijing Yongchuang Tongda Company has improved its heat shrink film packaging models with packaging speeds ranging from 10-130 packs/minute, which can meet the line requirements for speeds of 6000-54000 BPH. At present, fully automatic heat shrink packaging machines have appeared on the market, which are a combination of film sealing and cutting machines and heat shrink machines. They can achieve automatic film feeding, bag making, surface smoothing, film cutting and packaging, and integrated heat shrink packaging.

Currently, what we see on the market are not only fully transparent film packaging, but also colored packaging films. Through the printing of corporate promotional posters, not only has the product's recognition been enhanced, but the packaging's aesthetics have also been improved. This also puts forward certain requirements for the * * * performance of the heat shrink film packaging machine. In addition, the author has learned that the outer packaging material used for beverage packaging is generally PE film. With the increasingly strict requirements for environmental protection, how to adapt to new green and environmentally friendly packaging films will be a key consideration in the future.

As the price of cardboard boxes continues to rise, the search for alternatives to secondary packaging is a common demand among many food and beverage companies. As one of the alternatives, heat shrink packaging will have a competitive advantage due to its low price. From this perspective, the future of heat shrink film packaging machines is worth looking forward to.