Most people think that hot food packed in plastic bags is harmful, which means "PVC" plastic bags or "recycled" plastic bags. Common plastic bags on the market are actually made of polyethylene (PE). Polyvinyl chloride (PVC) is mostly used in plastic products with high strength and poor toughness such as pipes and light switches, and is rarely used in plastic bags that come into direct contact with food. Food-grade plastic bags that meet national standards can hold hot food.

Introduction to classification of polyethylene bags;

According to the production process, it is divided into pe flat pocket, self-sealing bag, chain clip bag, envelope bag, punching bag, handbag, zipper bag and PE film.

PE flat pocket is the simplest manufacturing process. After the film is blown by the machine, it is cut into bags on the bag-making machine and sealed at the bottom. The self-sealing bag is made of a bone strip blown by a machine and can be sealed by hand. With chain Bao Butong, these two kinds of bags are generally easily confused.

Chain clip bag is a bag made of PE film and two chain clips (this chain clip comes out separately). Generally, there are relatively wide indentations on both sides of the bag, but the self-sealing bag does not. The self-sealing bag has few printing colors, and the chain-clamping bag can print complex patterns.

The envelope bag has a tongue like an envelope. Stick a piece of tape on your tongue and fold it to seal the bag. Generally, clothes are used more. The courier bag is actually a kind of envelope bag.

Punching a handbag means punching a hole at the top of a flat pocket to make it convenient for the handbag. Holding a handbag is to add a plastic film strip to the top of the bag to make it convenient. This process is labor-intensive and costly.

Zipper bag is a zipper belt and a zipper cap on the seal of the bag. PE film is a film that is not made into a bag after being blown out by a machine. Also divided into winding film and shrink film.