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Ensinger PEI

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DuPont Selar® PT 8307 Polyester Barrier Resin  (discontinued **)
Categories: Polymer; Film; Thermoplastic; Polyester, TP; Polyester Film

Material Notes: Selar® PT 8307 is a modified polyester copolymer resin in the high melt viscosity (HMV) series. The HMV modification changes the rheology of the melt and provides better processibility in extrusion operations. It can be processed in conventional extruders designed for polyolefins or polyesters.

Information provided by DuPont Packaging Polymers.

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Physical PropertiesOriginal ValueComments
Density 1.33 g/ccASTM D1505
Moisture Vapor Transmission 1.10 cc-mm/m²-24hr-atmMocon Permatran W method
Oxygen Transmission 3.30 cc-mm/m²-24hr-atmASTM D3985
Viscosity Measurement 0.71Intrinsic viscosity per DuPont Method (in TFA/CH2 CH12)
 
Mechanical PropertiesOriginal ValueComments
Flexural Modulus 2.76 GPa
@Diameter 3.17 mm
bar; ASTM D790
Secant Modulus, MD 2.10 GPaASTM D882
Secant Modulus, TD 2.025 GPaASTM D882
Impact 6.2J/mm Spencer Impact; ASTM D3420
Coefficient of Friction 0.35film/film; ASTM D1894
Elmendorf Tear Strength, MD 180 g/mil250 µm (10 mil) sheet; ASTM D1922
Film Tensile Strength at Break, MD 62.0 MPaASTM D882
Film Tensile Strength at Break, TD 59.0 MPaASTM D882
 
Thermal PropertiesOriginal ValueComments
Melting Point 220 °CDSC/ASTM D3418
Glass Transition Temp, Tg 70.0 °CASTM D3418
 
Optical PropertiesOriginal ValueComments
Haze 0.20 %ASTM D1003
Gloss 100 %45°; ASTM D2457
 150 %20°; ASTM D2457
Transmission, Visible 80 %ASTM D1746
 
Processing PropertiesOriginal ValueComments
Nozzle Temperature 279 °CExtruder Die
Melt Temperature 271 - 282 °C
Drying Temperature 163 - 177 °C
Dry Time 6 - 8 hourto < 0.005% moisture.

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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