Product Description

Dynalloy® OBC8000-B30 is an easy processing, general processing TPE utilizing the unique rubber properties of Dow INFUSE™ Olefin Block Copolymers. Designed for a wide variety of applications, including applications requiring FDA compliances.

Features

-Adhesion to Polypropylene

-Warm, Non-tacky, Rubbery

-Enhanced Flow

Color

Black

Processing Method

Injection Molding

Mechanical Properties English SI Test Method
Shore Hardness, 10 sec delay 30 A 30 A ASTM D2240
Specific Gravity 1.06 1.06 ASTM D792, 23/23°C
Tensile Strength 515 psi 3551 kPa ASTM D412-Die C, 2hrs,23°C
Elongation at Break 1040 % 1040 % ASTM D412-Die C, 2hrs,23°C
300% Modulus 160 psi 1103 kPa ASTM D412-Die C, 2hrs,23°C
Thermal/Rheological Properties English SI Test Method
Apparent Viscosity @ 200°C 1341/sec 43000 cPs 43 Pa-sec ASTM D 3835
Apparent Viscosity @ 200°C 11170/sec 8900 cPs 9 Pa-sec ASTM D 3835
Purging
Purge thoroughly before and after use of this product with a low flow (0.5 - 2.5 MFR) polystyrene (PS) or polypropylene (PP).
Regrind
Regrind levels up to 20% can be used with Dynalloy® OBC8000-B30 with minimal property loss, provided that the regrind is free of contamination. To minimize losses during molding, the melt tempetature should remain as low as possible. The final determination of regrind effectiveness should be determined by the customer.
Shrinkage Properties English SI Test Method
Flow 0.009 - 0.016 in/in 0.009 - 0.016 mm/mm ASTM D 955
Residence Time
Dynalloy® OBC8000-B30 has good melt stability. Maximum residence times may vary, depending on the size of the barrel. Generally, the barrel should be emptied if it is idle for periods of 8 - 10 minutes or longer.
Drying Time English SI
Drying is not Required
Molding Temperatures English SI
Rear 330 - 370 °F 166 - 188 °C
Center 350 - 390 °F 177 - 199 °C
Front 390 - 430 °F 199 - 221 °C
Nozzle 390 - 430 °F 199 - 221 °C
Melt 380 - 440 °F 193 - 227 °C
Mold 80 - 100 °F 27 - 38 °C
Molding Parameters English SI
Screw Speed 50 - 100 rpm 50 - 100 rpm
Injection Speed 1 - 3 in/sec 25 - 76 mm/sec
1st Stage - Boost Pressure 200 - 900 psi 1379 - 6205 kPa
2nd Stage - Hold Pressure 20 % of Boost 40 % of Boost
Back Pressure 0 - 80 psi 0 - 552 kPa
Hold Time (Thick Part) 4 - 10 sec 4 - 10 sec
Hold Time (Thin Part) 1 - 4 sec 1 - 4 sec