production Shaanxi plastic water tank Its main raw material is polyethylene (PE), which is a high molecular organic compound formed by adding ethylene. Polyethylene is recognized as a good material in contact with food in the world. It is non-toxic, tasteless and tasteless, and meets the hygienic standards for food packaging. Polyethylene film is light and transparent. It has moisture resistance, oxygen resistance, acid resistance, alkali resistance, general air tightness and excellent heat sealing performance. It is called the "flower of plastic". It is an important material with a large number of plastic packaging and printing.

polyvinyl chloride

Polyvinyl chloride (PVC for short), with the molecular formula of (ch2-ch2cl) n, is the main category of vinyl polymers. It is the second largest plastic variety in the world after polyethylene, and its output ranks first in China. In the printing industry, PVC color calendering film and transparent glazing film are often used for packaging and decoration of books, folders, tickets and other covers

Shrink film

Shrink film is a thermoplastic film, which is stretched and oriented in the production process, and shrinks after hot air or infrared radiation treatment in the use process. After heat treatment, the film is tightly wrapped on the package, the shrinkage force reaches a certain value in the cooling stage, and can be stored for a long time.

low density polyethylene

Low density polyethylene, or LDPE for short, is a variety used in plastic packaging and printing industries in various countries. The specific gravity is 0.92~0.93, which can float in water. The crystallinity is low (60%), and the bulk polymerization is conducted at a pressure of 1000~3000 kg/C. Therefore, it is also called high-pressure polyethylene. At 23 ℃, the density is about 0.92. Poor calendering formability, suitable for blow molding into tubular films. It is suitable for food packaging, fiber products packaging and daily chemical products packaging. Marking of degradable plastic bags

High density polyethylene

High density polyethylene (HDPE for short). The density is 0.941 ～ 0.965g/cm3. It polymerizes under low pressure, so it is also called low pressure polyethylene. Milky white indicates poor gloss. The film can be processed by blow molding and T-die extrusion processes. Heat resistance, cooking resistance, cold resistance, frost resistance, moisture resistance, gas resistance, good insulation performance, not easy to damage, and the strength is twice that of LDPE. Easy to open. Paper has strong characteristics and is called "paper plastic film".

Polypropylene film

Biaxially oriented polypropylene film, also known as biaxially oriented polypropylene film (BOPP), has better tensile molecular orientation, mechanical strength, folding strength, air tightness and moisture resistance than ordinary plastic film. Compared with cellophane per unit area, the unit price is lower than cellophane. Because the film has excellent transparency, the reproduction color after printing is particularly bright and beautiful. It is an important base material for plastic composite flexible packaging 。