Plastic packaging bags are made of plastic granules as raw materials, according to the different needs of different raw materials are used to compound together, made of a variety of packaging products we see, with different functions, different characteristics, applicable to different products in different industries.

1、High-pressure polyethylene plastic bags

High-pressure polyethylene, also known as low-density polyethylene (LDPE), the course of the semi-transparent state, the transparency of plastic bag products is generally better than low-pressure polyethylene. Its main use has 3 categories:

A、food packaging: pastries, candy, fried goods, biscuits, milk powder, salt, tea, etc.;

B、 fibre products packaging: shirts, clothing, needle cotton products, chemical fibre products;

C、 daily chemical products packaging.

2、low-pressure polyethylene plastic bags

Low-pressure polyethylene, also known as high-density polyethylene (HDPE), due to its high degree of crystallinity, transparency is not good, generally semi-transparent state, the transparency of high-pressure polyethylene HDPE plastic bag products poor. Its main uses are 4 categories:

A、rubbish bags, mushroom bags;

B、 convenience bags, shopping bags, handbags, vest bags;

C、 fresh bag;

D、woven bag inner bag

3、 polypropylene plastic bags

Polypropylene plastic bags of polypropylene relative to polyethylene, its crystalline energy will weaken the need, especially atactic polypropylene, weak crystallinity, the transparency of its plastic bag products is very much higher.

Mainly used for packaging textiles, needle cotton products, clothing, shirts and so on.

The first three plastic bags due to its own material structure of non-polar reasons, not easy to dye or print, the need for surface printing treatment.

4、polyvinyl chloride plastic bags

Polyvinyl chloride plastic bags, by the polyvinyl chloride resin blow molding process, relative to the first three plastic bags, its material structure introduced the element of chlorine this substance, making its crystalline effect is very weak, the product's transparency is higher, at the same time due to the addition of chlorine elements, making the material itself with a certain polarity, easy to print colouring. Its main use for 2 aspects:

A、gift bags;

B、 bags, bags for needle and cotton products, cosmetic bags;

5、Biodegradable plastic bags

Environmental degradable plastic bags are all kinds of biodegradable plastic bags, with the development of science and technology, all kinds of materials can replace the traditional PE plastic materials appear, including PLA, PHAs, PBA, PBS and other polymer materials. All can replace the traditional PE plastic bags. Environmental protection plastic bags have been more widely used: supermarket shopping bags, even the volume of fresh bags, mulch, etc. in the country have large-scale application examples.