The difference between vacuum packaging bags and regular packaging bags

Vacuum packaging bags have a wide range of applications in daily life and industrial production. For example, in the food industry, vacuum packaging bags are used to package high-temperature foods such as ham, curry, grilled eel, grilled fish, and meat braised products; In the field of electronic products, vacuum packaging bags are used to protect precision instruments and components from moisture and oxidation; In the clothing industry, vacuum packaging bags are used to save storage space and protect clothing from pests and mold.
There are significant differences between vacuum packaging bags and ordinary packaging bags in multiple aspects. The following is a detailed analysis of the differences between the two:
1、 Material composition
Vacuum packaging bag: generally made of composite materials, which are coated with glue or compressed together from two or more materials. These materials typically include heat sealing layers, high-strength mechanical layers, conductive layers, etc., to meet different packaging needs. The selection and combination of composite materials enable vacuum packaging bags to have high strength and barrier properties.
Ordinary packaging bags often use a single material, such as polypropylene (PP), polyester (PET), nylon (PA), etc. These materials have relatively mature manufacturing industries and lower costs, but compared to composite materials, their performance is relatively single.
2、 Price
Vacuum packaging bags: Due to the use of composite materials and more complex production processes, their prices are usually higher, generally more than three times that of ordinary PE bags.
Ordinary packaging bags: Due to their single material, relatively simple production process, and relatively affordable price.
3、 Breathability
Vacuum packaging bag: It has low breathability, which is a necessary condition for achieving vacuum packaging. By removing the air from the packaging bag, a low oxygen environment is created to extend the shelf life of the product.
Ordinary packaging bags usually have high breathability and cannot achieve the effect of vacuum packaging.
4、 Mechanical strength
Vacuum packaging bag: Due to the use of composite materials and special design, it has strong tensile, compressive, and puncture resistance. After vacuum packaging, the bag can maintain good shape and stability, and is not easily damaged.
Ordinary packaging bags: They have weaker performance in these aspects, especially when vacuum packaging, they are prone to problems such as damage or deformation.
5、 Application scenarios
Vacuum packaging bags: widely used in various fields such as food, electronic products, medicine, mechanical parts, etc. In the food industry, vacuum packaging bags can effectively extend the shelf life of food and maintain its freshness; In the electronics industry, it can prevent products from getting damp, oxidized, and corroded.
Ordinary packaging bags are more commonly used in occasions where packaging requirements are not high, such as daily shopping, home storage, etc.
6、 Other performance
Vacuum packaging bags: They also have the advantages of moisture resistance, dust prevention, and bacterial resistance, which can protect products from external environmental influences. At the same time, its high barrier performance can effectively prevent the volatilization of internal components and the invasion of external impurities in the product.
Ordinary packaging bags have relatively weaker performance in these aspects.
In summary, there are significant differences between vacuum packaging bags and ordinary packaging bags in terms of material composition, price, breathability, mechanical strength, application scenarios, and other performance aspects. When selecting packaging materials, comprehensive consideration should be given to the characteristics of the product and packaging requirements. Vacuum packaging bags have multiple advantages but also some disadvantages. In practical applications, it is necessary to choose and use according to specific needs and scenarios to fully leverage its advantages and avoid potential risks.