A Brief Introduction to the Characteristics of Various Packaging Forms of Stretch Film Vacuum Packaging Machines

The diversified development of food varieties has driven the development of the packaging industry, especially the stretch film packaging machine industry. As one of the representative models of fully automatic vacuum packaging machines, it also plays a key role. Its form is constantly updated to adapt to different products.
Stretch film plays a significant role in packaging and is one of the indispensable factors in materials.
Using stretch film for packaging can greatly reduce the production cost of enterprises, lower the labor intensity of workers, and improve efficiency and grade. Manual stretch film only requires a handheld unwinding rack with damping brake, which can be wrapped by one person and is lightweight and flexible. Machine stretch film is suitable for bulk goods. If used in conjunction with a winding machine, it will greatly improve production efficiency, make the appearance uniform and beautiful, and ensure good and fast quality.
Stretch film can provide surface protection for products, forming a lighter protective appearance around the product, achieving the purpose of dust, oil, water, and theft prevention. More importantly, stretch film can evenly apply force to items, preventing uneven force from causing damage to the goods. This is something that traditional packaging methods (such as bundling tape) cannot achieve.
What are the current packaging methods for stretch film and what are their specific advantages?
1. Single sided stretching. It is not difficult to see from the literal meaning that the formation of stretch film mainly involves stretching the lower film into a shape, then placing the product into the lower film cavity and covering it with an upper film. Single side stretching is also quite common and has the advantage of wide adaptability. Generally, transparent film is used, and patterns and company logos can be printed on the film. For example, dried bean curd, Soy egg, ass hide glue cake, etc. all use this form.
2. Double sided stretching. Double sided stretching is a new mode developed on the basis of single-sided stretching technology. From its name, it can be seen that it is formed by stretching up and down, making it appear more three-dimensional after stretching, and achieving a more uniform stretching effect after packaging. At present, aluminum foil film is commonly used in the market, which has a certain degree of stretchability, that is, it cannot be stretched too deeply, and is commonly used in snack foods. For example, fish tofu, dried eggs, etc. are usually made with this type.
3. Modified atmosphere packaging refers to the process of extracting air from a product and filling it with various mixed gases such as nitrogen, oxygen, and carbon dioxide to maintain the freshness of the food. Simple basic adjustment is mainly packaged in outer boxes. First, put the product in the box, then vacuum, expand, etc., and then cover it with a film. This can maintain food
These are several common packaging forms, and in addition, they can be combined and directly selected, such as punching holes, tearing of packaging appearance, etc. With the continuous updating of device functions, there are more and more forms. I hope today's explanation by the editor has given everyone a deeper understanding of stretch film vacuum packaging machines.