The melt index (MI) of LDPE (measured at 190°C under a 2.16 kg load) typically ranges from 0.1 to 50 g/10min. LDPE with different MI values is suitable for various processing methods and product requirements:

Low MI (0.1–1 g/10min): It has high molecular weight and high melt strength, making it suitable for extrusion blow molding, pipe production, etc.

Medium MI (1–10 g/10min): It is a general-purpose grade, applicable to film production, injection molding, and so on.

High MI (10–50 g/10min): It features low molecular weight and good fluidity, which fits high-speed extrusion coating, injection molding of thin-walled products, etc.