PE Film
pe film, or polyethylene film, is a type of plastic film made from polyethylene. Polyethylene film is odorless, odorless, non-toxic and translucent.
Description
PE film, or polyethylene film, is a type of plastic film made from polyethylene. Polyethylene film is odorless, odorless, non-toxic and translucent. It is the most widely used polymer material in the world today. It does not react with moisture, grease, compounds, etc., is insoluble in most solvents at room temperature, and can withstand low temperatures of -70 ° C. Good weldability, good transmittance to oxygen and carbon dig aside, and poor permeability to water vapor.
Type
pe film is based on special polyethylene (PE) plastic film and is divided into high-density polyethylene protective film, medium-density polyethylene film and low-density polyethylene film according to different densities.
1. Low-density polyethylene (LDPE), the density of about 0. 92g/cm2; low-density polyethylene film has good transparency and heat sealing, can be waterproof and moisture-proof; but the tensile strength is low, the tensile elongation is large, and it is easy to wrinkle;
2. Medium-density polyethylene (MDPE), the density is about 0. 93～0． 94g/cm2; the performance is between high-density and low-density polyethylene;
3. High-density polyethylene (HDPE), the density is 0. 94—0． 965g/cm2; the heat resistance and mechanical strength of high-density PE film are better than those of low-density PE films, the tensile elongation is small, and the thickness of the film is generally above 0.03mm, but the transparency is poor.
In general, as the density rises, the mechanical properties and barrier properties will increase accordingly, heat resistance, and raw. Polyethylene of the same density also has different properties between them due to different film-forming processes.
