Linear Low Density Polyethylene - LLDPE

Polymer Type

Thermoplastic

Advantages

Has higher tensile strength than LDPE.  Exhibits higher impact and puncture resistance than LDPE.  Lower thickness (gauge) films can be blown compared to LDPE, with better environmental stress cracking resistance compared to LDPE.

Disadvantages

Lower gloss than LDPE.  Narrower temperature range for heat sealing. Not as easy to process as LDPE.

Typical Properties

Property

Value

Density (g/cm3)

0.92

Surface Hardness

SD48

Tensile Strength (MPa)

20

Flexural Modulus (GPa)

0.35

Notched Izod (kJ/m)

1.06+

Linear Expansion  (/°C x 10 5)

20

Elongation at Break (%)

500

Strain at Yield (%)

20

Max. Operating Temp. (°C)

50

Water Absorption (%)

0.01

Oxygen Index (%)

17

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

16

Dielectric Strength (MV/m)

25

Dissipation Factor 1kHz

0.0003

Dielectric Constant  1kHz

2.3

HDT @ 0.45 MPa (°C)

45

HDT @ 1.80 MPa (°C)

37

Material. Drying  hrs @ (°C)

NA

Melting Temp. Range (°C)

220 - 260

Mould Shrinkage (%)

3

Mould Temp. Range (°C)

20 -  60

Applications

Packaging, particularly film for bags and sheets. Lower thickness (gauge) may be used compared to LDPE.  Cable covering, toys, lids, buckets and containers, pipe.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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