High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a polyethylene thermoplastic made from petroleum. Known for its large strength to density ratio, HDPE is commonly used in the production of plastic bottles, corrosion-resistant piping, geomembranes, and plastic lumber. HDPE is commonly recycled, and has the number "2" as its resin identification code (formerly known as recycling symbol).
Specification and production :
Plastic flat mesh (aka plastic breeding net) is heated molten plastic material in the extruder, the screw extruder has entered a number of small holes inside and outside special rotating die head, molten plastic flows through the die pore the formation of two shares melt wire, because the head rotation, two stocks converge at one point interrupted silk material, thereby forming a network, and then cooling stereotypes into the net.