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Westlake EF421 Low Density Polyethylene

Category Polymer , Thermoplastic , Polyethylene (PE) , LDPE
Manufacturer Westlake Chemical Corporation
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
WESTLAKE polyethylene EF421 is a low-density polyethylene with very good optical and strength properties. This material is an excellent choice for bakery films and general purpose food packaging applications.Application/UsesGeneral purpose clarity packagingMedium duty produce bagsBakery bagsBags for textile itemsFDA: This material complies with FDA regulations in 21 CFR, section 177.1520. Kosher Compliant.All information provided by Westlake Chemical
Physical Properties Metric English Comments
Density 0.923 g/cc
0.0333 lb/in³
ASTM D1505
Thickness 31.8 microns
1.25 mil
Melt Flow 2.1 g/10 min

@Load 2.16 kg,
Temperature 190 °C
2.1 g/10 min

@Load 4.76 lb,
Temperature 374 °F
ASTM D1238
Mechanical Properties Metric English Comments
Film Elongation at Break, MD 350 %
350 %
ASTM D882
Film Elongation at Break, TD 700 %
700 %
ASTM D882
Dart Drop 3.94 g/micron
100 g/mil
ASTM D1709
Film Tensile Strength at Break, MD 24.1 MPa
3500 psi
ASTM D882
Film Tensile Strength at Break, TD 18.6 MPa
2700 psi
ASTM D882
1% Secant Modulus, MD 172 MPa
25000 psi
ASTM D882
1% Secant Modulus, TD 200 MPa
29000 psi
ASTM D882
Optical Properties Metric English Comments
Haze 4.2 %
4.2 %
ASTM D1003
Gloss 76 %
76 %
at 45º; ASTM D2457
Processing Properties Metric English Comments
Melt Temperature 182 - 199 °C
360 - 390 °F
with BUR of 1.5:1 or higher
Blow-up Ratio (BUR) 2.5
2.5
Descriptive Properties Value Comments
Process Film
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