What is the material of PE bag and what kind of packing bag
Name:polyethylene,English full name: polyethylene,PE,referred to as PE.It is a kind of non-toxic,tasteless,odorless,moisture-proof,dust-proof,waterproof,oxygen resistant,acid resistant, alkali resistant, plastic bag material. It is the most important material for making plastic bags, and is recognized as the best material for contacting food in the world.
PVC -- Polyvinyl chloride: polyvinyl chloride is abbreviated as PVC, with the molecular formula of (ch2-ch2) n. It is the most important type of vinyl polymer and the second largest plastic variety in the world after polyethylene.
Shrinkfilm: it is a kind of thermoplastic film which is stretched and oriented in the production process and shrinks when it is exposed to hot air treatment or infrared radiation during use. After heat treatment, the film is tightly wrapped on the package, the shrinkage force reaches the maximum in the cooling stage, and can be stored for a long time.
LDPE -- low density polyethylene (LDPE) is the most widely used variety in the plastic packaging and printing industry of various countries. The specific gravity is 0.92-0.93, which can float in water. Low crystallinity (60%) and bulk polymerization at pressure of 1000-3000kg / cm2, so it is also called high pressure polyethylene. At 23 ℃, the density is about 0.92. It is suitable for food packaging, fiber products packaging and daily chemical products packaging.
HDPE -- high density polyethylene: HDPE for short. It is polymerized with low pressure, so it is also called low pressure polyethylene. It is milky white with poor surface luster. The film can be processed by blow molding and T-die extrusion. The heat resistance and cold resistance of LDPE are twice as good as that of LDPE. It's very easy to open your mouth.
BOPP -- biaxially oriented polypropylene film: Biaxially oriented polypropylene film, also known as biaxially oriented polypropylene film, abbreviated as BOPP, is characterized by molecular orientation, mechanical strength, folding strength, air tightness and moisture resistance better than ordinary plastic film. Compared with cellophane, the unit price is lower than cellophane. Due to the good transparency of this film, the color reproduction after printing is particularly bright and beautiful. It is an important base material for plastic composite flexible packaging.
Since it is the most important material for making plastic bags, do you know that PE can be used to produce those plastic bags? Or those plastic bags are made of PE. Want to know? If you want to know, look down.
The most common PE plastic bag is the portable plastic bag. As long as you go shopping, you can't do without it. Besides hand-held plastic bags, what else? Flat bag, side bag, self sealing bag, bone bag, zipper bag, square bag, vest bag, diagonal bag, flat bag, bubble bag, anti-static bag, hook bag, etc.