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Borealis Borstar® FB4370 Medium Density Polyethylene

Category Polymer , Thermoplastic , Polyethylene (PE) , MDPE
Manufacturer Borealis
Trade Name Borstar®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Borealis Borstar® FB4370 Medium Density Polyethylene.pdf
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Material Notes:
Borstar® FB4370 is a linear medium density polyethylene grade combining excellent extrusion properties with high film stiffness. Applications: Borstar® FB4370 has been developed especially for applications like: lamination films, shrink film, automated packaging, and blending.Information provided by Borealis AG
Physical Properties Metric English Comments
Density 0.937 g/cc
0.0339 lb/in³
ISO 1183
Melt Flow 0.40 g/10 min

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

@Load 4.76 lb,
Temperature 374 °F
ISO 1133
2.1 g/10 min

@Load 5.00 kg,
Temperature 190 °C
2.1 g/10 min

@Load 11.0 lb,
Temperature 374 °F
ISO 1133
Mechanical Properties Metric English Comments
Film Elongation at Break, MD 530 %
530 %
ISO 527-3
Film Elongation at Break, TD 830 %
830 %
ISO 527-3
Tensile Modulus 0.450 GPa
65.3 ksi
MD; ASTM D882-A
0.540 GPa
78.3 ksi
TD; ASTM D882-A
Coefficient of Friction 0.40
0.40
ISO 8295
Elmendorf Tear Strength, MD 3.80 g/micron
96.5 g/mil
ISO 6383/2
Elmendorf Tear Strength, TD 25.5 g/micron
648 g/mil
ISO 6383/2
Dart Drop Test 130 g

@Thickness 0.0400 mm
0.287 lb

@Thickness 0.00157 in
ISO 7765-1
Film Tensile Strength at Break, MD 56.0 MPa
8120 psi
ISO 527-3
Film Tensile Strength at Break, TD 39.0 MPa
5660 psi
ISO 527-3
Processing Properties Metric English Comments
Melt Temperature 190 - 210 °C
374 - 410 °F
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