LDPE Film

LDPE Film is distinguished by its low density, flexibility, and excellent chemical resistance, properties that make it one of the most widely adopted polymer films. Its thin-sheet morphology provides a uniform barrier, combined with excellent heat-sealability and moisture resistance. Industries such as packaging, electronics, and construction rely heavily on LDPE film due to its adaptability, low cost, and stable dielectric performance. Specific applications include oxygen- and moisture-barrier films in food packaging, super-hydrophobic and anti-sticking films in specialized industrial coatings, and high-foamed composite aluminized films for insulation and protective layers in construction. Research continues to expand its performance range, with innovations such as nanomaterial-modified LDPE films offering superior oxygen blocking, lubricity, and structural precision. In both industrial and scientific contexts, LDPE Film remains indispensable as a versatile material that supports packaging innovation, insulation technologies, and functional surface engineering.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Foil

Thickness		±20%

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Good-Fair
Acids - dilute	Good
Alcohols	Good
Alkalis	Good
Aromatic hydrocarbons	Fair-Poor
Greases and Oils	Good-Fair
Halogenated Hydrocarbons	Fair-Poor
Halogens	Fair-Poor
Ketones	Good-Fair

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.2-2.35
Dissipation factor @ 1MHz	1-10x 10⁻⁴
Dielectric strength( kV mm⁻¹ )	27
Surface resistivity( Ohm/sq )	10¹³
Volume resistivity( Ohmcm )	10¹⁵-10¹⁸

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Fair
Refractive index	1.51
Resistance to Ultra-violet	Poor
Limiting oxygen index( % )	17
Water absorption - over 24 hours( % )	0.015
Density( gcm⁻³ )	0.92

Mechanical Properties

Element	Value
Hardness - Rockwell	D41-46 - Shore
Elongation at break( % )	400
Tensile modulus( GPa )	0.1-0.3
Izod impact strength( J m⁻¹ )	1000
Tensile strength( MPa )	May-25

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	50
Heat-deflection temperature - 1.8MPa( C )	35
Lower working temperature( C )	-60
Upper working temperature( C )	50-90
Specific heat( J K⁻¹ kg⁻¹ )	1900-2300
Thermal conductivity( W m⁻¹ K⁻¹ )	0.33@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	100-200