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The Function of Packaging PE Bag
PE is short for polyethylene, ethylene polymerization of a thermoplastic resin. In industry, including ethylene and small amounts of alpha olefin copolymer.
Performance
Polyethylene odourless, non-toxic, feel like wax, has good low temperature resistance (the lowest temperature can reach 70 ~ 100 ℃), chemical stability is good, most of acid and alkali erosion (acid) with characteristics of oxidation resistance, temperature does not dissolve in solvents, small water imbibition, excellent electrical insulation properties; But polyethylene for environmental stress (chemical and mechanical effect) is very sensitive, heat aging. The properties of polyethylene owing to the different varieties, mainly depends on the molecular structure and density. Using different production methods can get different density (0.91 ~ 0.96 g/cm3) of the product. Polyethylene available general thermoplastic plastic molding method (see plastic machining).
Usage
USES is very wide, mainly used to make films, containers, piping, monofilament, wire and cable, daily necessities, etc., and can be used for high frequency TV, radar and other insulating materials.
Species
According to the material: PE is divided into LDPE, HDPE and LLDPE.
1, PE bag for the most simple production process, made by machine blown film, and then to bag making machine cut into one bag, one above the bottom sealing.
2, valve bag is made by machine blown film with a bone, manual and sealing. Unlike folder chain bag, generally easy to confuse the two bag.
3, chain bag is made of PE film, in the above article plus 2 double chain (the clip chain is separately) produced by the bag, the bag on both sides tend to have more wide indentation, and valve bag is not. Valve bag printing color, and chain bag can printing complex design.
4, envelope bag is like the envelope has a tongue, the tongue on a strip and the fold over can be sealed bag. More general apparel. And Courier bags is one of the envelope bag.
Environmental issues
And theory on environmental issues, the PE bag can be recycled many times not only, and is consumed energy in many materials and process technology is easy, at least in so much more special, small PE bag recycling factory.
More than 20 years ago began to major cities in
So PE bag is very practical,welcome your any inquiry for Package bag!
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