company-news | Time:2022-12-15
Plastic bags have become an indispensable packaging in people's daily life due to their advantages of lightness and portability, but when we look at these various plastic packaging bags, have you ever wondered what materials they are made of? What kind of fillers are mixed with it? Today we will talk about the difference between PP bags and PE bags in response to the above problems.
The so-called PP bag is a plastic bag made of polypropylene. It generally adopts color printing and offset printing technology. kind. It is non-toxic, tasteless, smooth and transparent surface. It is easy to burn, the flame is molten and dripping, the top is yellow and the bottom is blue. After the flame is turned off, there is little smoke and it will continue to burn. It is mostly used for packaging in various industries such as cosmetics, food, toys, clothing, stationery, electronics, and hardware products. The color is transparent, the quality is good, and the toughness is good. Because of its hard and brittle material, it is only suitable for packaging and not for load-bearing.
The so-called PE bag is a plastic bag made of polyethylene. Polyethylene is recognized as the best material for food contact in the world. It is non-toxic, tasteless, odorless, feels like wax, and meets the hygienic standards of food packaging. Polyethylene film, light and transparent, has the properties of moisture resistance, oxygen resistance, acid resistance, alkali resistance, general air tightness, and excellent heat sealing performance. It is known as the "flower of plastic" and is the most used and most important plastic packaging printing. Material. In addition, polyethylene can be divided into LDPE (low-density high-pressure polyethylene), LLDPE and HDPE (high-density low-pressure polyethylene), etc. Among them, low-density polyethylene is the most widely used variety in the plastic packaging and printing industry of various countries, and is mostly suitable for food packaging, fiber product packaging, and daily chemical product packaging; high-density polyethylene is heat-resistant, steam-resistant, cold-resistant, and freeze-resistant, moisture-proof and gas-proof , Good insulation performance, good ductility and not easy to break.
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