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PE Bag

PE is an abbreviation of polyethylene, which is a thermoplastic resin obtained by polymerization of ethylene. Industrially, it also includes a copolymer of ethylene and a small amount of α-olefin; it is a transparent plastic bag that can be used for packaging of clothing, bags, electronic products, and the like. According to the material: PE is divided into LDPE, LLDPE and HDPE.

According to the production process, it is divided into: PE flat pocket, ziplock bag, zipper bag, envelope bag, punching tote bag, hand bag, zipper bag, PE film.

1. PE flat pocket is the simplest production process. After the film is blown by the machine, it is cut into a bag on the bag making machine and the bottom is sealed.

2. The self-sealing bag is a strip of bone when the film is blown by the machine, which can be manually sealed. Unlike zipper bags, these two bags are generally confusing.

3. The zipper bag is made of PE film, and two zipper chains (the clip chain is separately produced) are added on the bag. The bag has a relatively wide indentation on both sides, but the ziplock bag does not. Ziplock bags print less color, while zipper bags can print complex patterns.

4. The envelope bag has a tongue like an envelope. A strip of glue is attached to the tongue. When folded, the bag can be sealed. There are more general clothing categories. And the courier bag is actually a kind of envelope bag.

5. The punching tote bag is to make a hole in the appropriate position on the top of the flat pocket to facilitate lifting the bag.

6. Hand-held handbags are to be added with plastic film strips on the top of the bag to facilitate the lifting of the bag. This process is labor-intensive and relatively expensive.

7. The zipper bag is equipped with a zipper and a zipper cap at the bag seal.

8. PE film is a film that does not make a bag after the machine is blown out. It is also divided into a wrap film and a shrink film.

Commonly used in the market are counted by number and by length (volume). (a) small bag is mainly used for small parts packaging, electronic products The accessory bag of the product has anti-static effect, the mouth of the bag is divided into flat mouth and self-sealing structure, and the latter is also called bone pocket (PE bone bag) or compact bag;

(Volume) bags need to be cut by themselves (for material packaging) and print cuts (for supermarkets).

Another plastic wrap film of PE material can also be called PE bag. Note that the cling film that is in direct contact with food must use PE material (others are generally PVC), which is safer for human body. Resolution method: The transparency, stretchability and viscosity of PVC cling film are stronger than PE cling film. When the PVC cling film is burned with fire, the flame is black, black smoke, pungent smell, no oil drop, and will automatically extinguish after leaving the fire source. When the PE plastic wrap burns, the flame is yellow, tasteless, will drip, and can continue to burn after leaving the fire source.

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