Manufacturing process of PE bag

According to the production process, it is divided into: PE flat bag, ziplock bag, zipper bag, envelope bag, punching bag, handle bag, zipper bag, PE film.
1. PE flat bags are the simplest manufacturing process. After the film is blown by the machine, they are cut into bags one by one on the bag making machine, and the bottom is sealed.
2. The self-sealing bag is made of a bone strip when the film is blown by the machine, which can be manually sealed. Unlike zipper bags, these two types of bags are generally easy to confuse.
3. The zipper bag is a bag made of PE film with 2 zipper chains (this zipper chain is separately produced). There are generally relatively wide indentations on both sides of the bag, but the ziplock bag does not. Ziplock bags have less printing colors, while zipper bags can print complex patterns.
4. The envelope bag has a tongue like an envelope, and a strip of glue is pasted on the tongue, which can be folded to seal the bag. General clothing is more used. There is also a courier bag is actually a kind of envelope bag.
5. The punching tote bag is to punch a hole at the top of the flat pocket to facilitate lifting the bag.
6. The handle bag needs to add a plastic film strip on the top of the bag to facilitate the bag to be lifted. This process consumes labor and the cost is relatively high.
7. The zipper bag is to install a zipper strip on the seal of the bag and put a zipper cap on it.
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 stretch film and shrink film.