Packaging

Low Density Polyethylene (LDPE)

Alternative and trade names
Lupolen®, Purell®, Pharmalene®, Riblene®
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Description

It is a low density polyethylene resin. It exhibits very good softness and toughness and good dimensional stability. Semi-rigid, translucent, very tough, weatherproof, good chemical resistance, low water absorption, easily processed by most methods, low cost.

Properties

General

Density ρ

0.92 g/cm³ at 20 °C

Mechanical

Elastic modulus E

0.2 - 0.48 GPa at 20 °C

Elongation A

100 - 1000 % at 20 °C

Impact strength, Charpy unnotched Iunnot

no break

Max allowed stress σmax

6 - 17 MPa at 20 °C

at 15-25% strain

Thermal

Coefficient of thermal expansion α

2.3E-4 - 2.5E-4 1/K at 20 °C

Flammability

UL 94 HB

Max service temperature, long Tmaxlong

60 - 75 °C

Max service temperature, short Tmaxshort

80 - 90 °C

Melting point Tm

105 - 120 °C

Specific heat capacity cp

2100 - 2500 J/(kg·K) at 20 °C

Thermal conductivity λ

0.32 - 0.4 W/(m·K) at 20 °C

Electrical

Dielectric constant εr

2.2 - 2.3 [-] at 20 °C

Electrical resistivity ρel

1.00E+15 Ω·m at 20 °C

Optical

Transparency

no

Technological properties

Application areas

Films for packaging, agricultural films, carrying bags, heavy-duty sacks, wine bottle closures

Processing methods

Injection molding, blow molding, extrusion, compression molding, thermoforming, coating

This material data has been provided by M-Base.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.