Referred to as PE. It is a polymer organic compound made of ethylene. Polyethylene is recognized as the best material in the world for contact with food. Non-toxic, tasteless, odorless, in line with food packaging hygiene standards. Polyethylene film, light and transparent, with moisture-proof, antioxidant, acid, alkali, gas tightness of general, excellent thermal sealing performance. It is the most important material in the printing of plastic packaging.
PVC referred to as PVC, molecular formula (CH2-CH2) n, is the most important type of vinyl polymers, is the world's second largest plastic varieties of polyethylene.
Shrink Film (Shrinkfilm) is a thermoplastic plastic film that is stretched and directed during the production process and is contracted by hot air treatment or infrared irradiation during use. After heat treatment, the film is tightly wrapped in the packaging, the contraction force in the cooling stage to achieve the maximum value, and long-term preservation.
ldpe--Low Density polyethylene
Low-density polyethylene (LDPE) is the most used variety in the printing industry of plastic packaging . The proportion is 0.92 ~ 0.93, can float in water. Low crystallinity (60%), in the pressure 1000~3000kg/c㎡ bulk polymerization, it is also called high pressure polyethylene. At 23 degrees Celsius, the density is around 0.92. Suitable for food packaging, fiber products packaging, daily chemical products packaging.
High-density polyethylene, referred to as HDPE. With low pressure polymerization, it is also known as low pressure polyethylene. is milky white, the surface luster is poor. The processing film can be blown by blow molding and T-die extrusion process. Heat-resistant cooking, cold resistance and refrigeration, moisture, gas, isolation performance, and not easy to damage, the strength of twice times the LDPE. Very easy to open.
bopp--biaxial Tensile Polypropylene film
biaxial Tensile polypropylene film, also known as biaxial tensile polypropylene film, English abbreviation code BOPP, its characteristics of tensile molecular orientation, mechanical strength, folding strength, gas density, moisture resistance is better than ordinary plastic film. Compared with cellophane, the unit size is lower than cellophane. Because the transparency of this film is very good, after the reproduction of color exceptionally bright beautiful, plastic composite soft packaging important base material