The Technology And Advantages And Disadvantages Of PE Film Wraps

Because the polyethylene molecule does not contain polar groups, and the crystallinity is high, the surface free energy is low, therefore, the printing performance of the film is poor, the adhesion of ink and adhesive is poor, so in printing and composite before the need for surface treatment.
The craft of PE Film Wraps
Low density polyethylene film is generally used in the following two ways:
Blow molding
casting
Casting polyethylene film has uniform thickness, but it is rarely used because of its high price. Blow molded polyethylene film is made of blow molded grade PE particles by blow molding machine
Blown, low cost, so the most widely used. Low density polyethylene film is a kind of translucent, glossy, soft film, with excellent chemical stability, heat sealing, water and moisture resistance, resistance
Freeze, can be boiled. Its main disadvantage is the poor barrier to oxygen,
The advantages and disadvantages of PE Film Wraps
Advantages:
Good mechanical properties, tensile strength is one of the highest stiffness of all plastic films good cold resistance and heat resistance, suitable for the temperature range of -70℃~150℃, melting point 260℃, softening point 230-240℃ extremely good dimensional stability, shrinkage is still very small at high temperature. Good gas resistance oil, resistance to most solvents, resistance to dilute acid, dilute alkali transparency is good, transmittance of more than 90%, to prevent UV penetration is poor.
Disadvantages:
High cost