What kinds of PE bags are there?

According to the production process, it can be generally divided into: PE flat bag, self sealing bag, chain clip bag, envelope bag, punching bag, hand bag, zipper bag and PE film.
1. PE flat bags are the simplest production process. After film blowing by the machine, they are cut into bags on the bag making machine, and the bottom is sealed.
2. The self sealing bag is provided with a bone strip when the machine blows the film, which can be manually sealed. Unlike the chain bag, the two kinds of bags are easily confused.
3. The chain clamp bag is made of PE film and two chain clamps (the chain clamps are separately made). There are generally relatively wide indentations on both sides of the bag, while the self sealing bag does not. Self sealing bags can be printed in less colors, while chain clamping bags can be printed with complex patterns.
4. The envelope bag has a tongue like an envelope, and a strip of adhesive tape is stuck on the tongue, which can be folded to seal the bag. Generally, clothes are used more. And the express bag is actually a kind of envelope bag.
5. Punching handbag is to punch a hole at an appropriate position on the top of the flat bag to facilitate lifting the bag.
6. A plastic film strip is added on the top of the bag to facilitate the lifting of the bag. This process consumes labor and costs relatively high.
7. The zipper bag is to install a zipper strip and a zipper cap on the closure of the bag.
8. PE film is a film that is not made into a bag after being blown out by the machine. It is also divided into wound film and shrink film.