What are the common original materials of plastic convenient bags, don’t worry, the following editor will introduce you to high-pressure polyethylene plastic convenient bags. High-pressure polyethylene is also called low-density polyethylene (LDPE). In the semi-transparent state, the plastic bag products are general More transparent than low pressure polyethylene. There are three primary uses.
Food packaging: pastry, candy, fried, pastry, milk powder, salt, tea and other textile packaging: shirts, clothing, bedding, chemical fiber products, daily chemical product packaging. Low-pressure polyethylene plastic convenient bags. Low-pressure polyethylene is also called high-density polyethylene (HDPE). It has high crystallinity, poor transparency, and is generally translucent. The transparency is lower than that of HDPE high-pressure polyethylene plastic bags. There are four primary uses.
Garbage bags, bacterial seed bags; toilets, shopping bags, handbags, backpacks; plastic preservation bags; polypropylene plastic convenient bags inside woven bags. Compared with polyethylene, the crystallization ability of polypropylene may be much weaker. In particular, amorphous polypropylene has weak crystallinity, and plastic bag products have relatively high transparency.
It is mainly used for packaging fibers, knitwear, clothing, shirts, etc. The first three plastic bags are not easy to be dyed or printed because of their non-polar material structure, so they need external printing treatment. Compared with the first three plastic convenience bags, a substance called chlorine is introduced into the material structure, the crystallization effect is weak, and the product transparency is high. Because chlorine is added, the material itself is polar, so the coloring is easy to print.
