PE is an abbreviation of polyethylene, which is a thermoplastic resin obtained by polymerization of ethylene. In the industry, it also includes a copolymer of ethylene and a small amount of α-olefin; it is a transparent plastic bag which can be used for packaging of clothing, bags, electronic products and the like. Let us look at the use and classification of PE bags , as follows:
Use of PE bags:
Mainly used in the manufacture of films, containers, pipes, monofilaments, wire and cable, daily necessities, etc., and can be used as high-frequency insulation materials for televisions, radars, etc.
Classification of PE bags:
According to the material: PE is divided into LDPE, HDPE and LLDPE.
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 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 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. Punching the 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 bags are mainly used for small parts packaging, electronic parts pockets have anti-static effect, the mouth of the bag is flat and self-sealing structure, the latter also known as bone pocket (PE bone bag) or compact bag; (roll) bag There is a need to cut it yourself (for material packaging) and print incisions (for supermarkets).
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