Bayport Polymers Baystar™ D4720 High Density Polyethylene Film Resin, High Stalk Extrusion

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Bayport Polymers Baystar™ D4720 High Density Polyethylene Film Resin, High Stalk Extrusion
Categories:	Polymer; Film; Thermoplastic; Polyethylene (PE); Medium Density (MDPE); Medium Density Polyethylene (MDPE), Film Grade
Material Notes:	Medium Molecular Weight. Excellent processability, good tear and impact strength, good stiffness, excellent compatibility with LDPE and LLDPE, excellent drawdown, good moisture barrier properties. Applications: Multiwall liner, gas flush poultry bags, mailing envelopes, heavy duty shipping sacks, fresh cut produce packaging, coextrusions. MatWeb has a separate entry for the resin without using high stalk extrusion. This former Total Petrochemicals grade is now a part of the Bayport Polymers joint venture.
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Physical Properties	Original Value	Comments

Density	0.945 g/cc	ASTM D792
Water Vapor Transmission	7.76 g/m²/day	ASTM E96/66
Thickness	25.4 microns	as tested; with a 6:1 FLH/D ratio and a 4:1 BUR
Melt Flow	0.28 g/10 min @Load 2.16 kg, Temperature 190 °C	ASTM D1238
High Load Melt Index	20 g/10 min @Load 21.6 kg, Temperature 190 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Film Tensile Strength at Yield, MD	3500 psi @Thickness 0.0254 mm	ASTM D882A
Film Tensile Strength at Yield, TD	3700 psi @Thickness 0.0254 mm	ASTM D882A
Film Elongation at Break, MD	600 % @Thickness 0.0254 mm	ASTM D882A
Film Elongation at Break, TD	700 % @Thickness 0.0254 mm	ASTM D882A
Elmendorf Tear Strength MD	28 g @Thickness 0.0254 mm	ASTM D1922
Elmendorf Tear Strength TD	530 g @Thickness 0.0254 mm	ASTM D1922
Dart Drop	100 g/mil @Thickness 0.0254 mm	ASTM D1709A
Dart Drop Test	100 g	1.0 mil; ASTM D1709A
Film Tensile Strength at Break, MD	700 psi @Thickness 0.0254 mm	ASTM D882A
Film Tensile Strength at Break, TD	5700 psi @Thickness 0.0254 mm	ASTM D882A

Thermal Properties	Original Value	Comments
Melting Point	264 °F	ASTM D3417

Processing Properties	Original Value	Comments
Melt Temperature	380 - 420 °F	Extrusion

Descriptive Properties
Process	Film

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PBAYST814m / 221025

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