What are the specific classifications of PE plastic bags? If classified according to the materials, they can be divided into LDPE bags (low-density polyethylene bags), HDPE bags (high-density polyethylene bags), etc.

If classified according to the manufacturing process, there are:

1. PE self-sealing bags. They are plastic bags with a bone strip at the bag mouth, and can be manually sealed by pressing.

2. PE zipper bags. There are two chains at the bag mouth, and there are wider indentations on both sides of the bag. Generally, some complex patterns are printed on them. This kind of bag is easy to be confused with the above-mentioned PE self-sealing bags.

3. PE hand-carrying bags. They are bags with a plastic strip added at the bag mouth, which are convenient for users to lift the bags. Compared with ordinary plastic bags, since additional components need to be added to this kind of bag, it has a higher cost.

4. PE flat bags. They are the simplest type of PE plastic bags in terms of manufacturing process, which can be obtained just by blowing the film and then cutting on the bag-making machine.

5. PE punched bags. They are bags with holes punched below the bag mouth, which are convenient for users to lift the bags.

6. PE zipper bags. They are plastic bags with a zipper strip and a zipper cap added at the bag mouth.

There are various classifications of PE plastic bags, which can meet many needs in daily life.