What are the raw materials of plastic tray produced in China?

Domestic plastic tray raw materials mainly for polyethylene (PE) and polypropylene (PP) two, due to the nature of raw materials, make the same model of different materials in the price of plastic tray slightly different, the use of bearing and use environment is also different, resulting in the service life of the tray is not the same.

Polyethylene plastic tray: generally used high strength polyethylene injection. Polyethylene is a thermoplastic resin made from ethylene by polymerization. The properties of polyethylene vary from variety to variety, mainly depending on molecular structure and density. PE has general mechanical properties, low tensile strength, poor creep resistance and impact resistance. High density polyethylene plastic tray has good toughness and impact resistance, but its service life is greatly affected by the environment. Especially in the northern dry, low temperature weather environment, low temperature resistance ability is poor, long-term turnover easily brittle, fracture.

Polypropylene plastic tray: polypropylene material injection or blow molding. Polypropylene material is a translucent colorless solid, odorless and non-toxic. With a density of 0.90g/cm3, it is the lightest general-purpose plastic. Corrosion resistance, tensile strength 30MPa, strength, rigidity and transparency are better than polyethylene. Disadvantage is low temperature impact resistance, more easy to aging, polypropylene plastic tray than polyethylene plastic tray strength, but poor service life, easy to aging. Especially in the outdoor environment, easy to aging.

Copolymerized polypropylene plastic tray: made of new material copolymerized polypropylene. Polyethylene and polypropylene polymerization. Copolymerized polypropylene (EPS30R) is a new material. High strength, steel, toughness, cold and weather resistance, especially at low temperature, chemical properties than polyethylene, polypropylene stability. Plastic products made of copolymerized polypropylene have strong impact resistance, good toughness and long service life. Copolymerized polypropylene plastic tray, especially in north low temperature conditions, and cold storage environment, long service life, and long-term use is not easy to deformation. Due to the limitation of raw material extraction process, the cost of copolymerized polypropylene is high.

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