Effects of LDPE Resin Physical Properties On Film's Mechanical Properties

Following is a General Guide to the Effects of LDPE Resin Physical Properties on film's Mechanical Properties

Film Property	As Melt Index Increases	As Density Increases
Chemical Resistance	Remains the same	Increases
Clarity	Increases	Increases
Elongation at rupture	Decreases	Decreases
Film drawdown	Increases	Increases
Film impact strength(toughness)	Decreases	Decreases
Flexibility	Decreases	Remains the same
Gloss	Increases	Remains the same
Heat resistance(softening point)	Decreases	Increases
Impermeability to gases/liquids	Remains the same	Increases
Low temperature flexibility	Decreases	Decreases
Melt Viscosity	Decreases	Increases
Mechanical flex life	Decreases	Decreases
Resistance to film blocking	Decreases	Increases
Stress cracking resistance	Decreases	Decreases
Tensile strength at rupture	Decreases	Increases