Self-sealing bags are mainly used for sorting and packaging some small items. Food-grade packaging bags are used to store various small snacks, grains, tea, etc., which can prevent moisture, insects, and odors. In terms of electronic products, anti-static Ziplock bag packaging electronic parts can play the role of anti-static, moisture-proof and waterproof. There are also some packaging bags that can be automatically sealed without any tools, such as self-adhesive ziplock bags and ziplock ziplock bags, etc. There are a wide range of types. application in people's lives.
One of the most important properties of self-sealing bags is airtightness. It is precisely because self-sealing bags have good airtightness that they can be widely used in food, agriculture, industry, and daily life. Therefore, airtightness is the primary value of self-sealing bags. In the self-sealing production process, due to the mass production, large quantity and large scale, and many production links, there may be leakage or pressing through during heat sealing, or the material itself has defects, cracks, pinholes, etc. , so as to form invisible pores or uneven hot pressing to form weak points of strength. In life, if the ziplock bag is accidentally damaged during the use of the ziplock bag, the ziplock bag will lose its value. These factors will directly affect the sealability of the ziplock bag. Once damaged, the ziplock bag will lose the meaning of protecting the product.
