Product Description

Dynalloy® OBC8100-N50 is a TPE developed utilizing the unique rubber properties of Dow INFUSE? Olefin Block Copolymers. The 8100 Series has been specifically developed for applications requiring the TPE to be in direct contact with food.

New Product. Commercial specifications have not been established.

Features

-Excellent Colorability

-Adhesion to Polypropylene

-Direct Food Contact

-Enhanced Flow Properties

Color

Natural

Processing Method

Injection Molding

Mechanical Properties English SI Test Method
Shore Hardness, 10 sec delay 48 A 48 A ASTM D2240
Specific Gravity 1.06 1.06 ASTM D792, 23/23°C
Tensile Strength 480 psi 3309 kPa ASTM D412-Die C, 2hrs,23°C
Elongation at Break 990 % 990 % ASTM D412-Die C, 2hrs,23°C
100% Modulus 215 psi 1482 kPa ASTM D412-Die C, 2hrs,23°C
300% Modulus 275 psi 1896 kPa ASTM D412-Die C, 2hrs,23°C
Tear Strength 100 pli 18 kN/m ASTM D624
Thermal/Rheological Properties English SI Test Method
Apparent Viscosity @ 200°C 1341/sec 112000 cPs 112 Pa-sec ASTM D 3835
Apparent Viscosity @ 200°C 11170/sec 22900 cPs 23 Pa-sec ASTM D 3835
Regulatory Information Yes/No
FDA Yes
Coloring
Color concentrates with polypropylene (PP), ethylene vinyl acetate (EVA), or low density polyethylene (PE) carriers are most suitable for coloring Dynalloy® OBC 8100-N50. Improved color dispersion can be achieved by using higher melt flow concentrates (with a melt flow from 25 - 40 g/10 min). Typical loadings for color concentrates are 1% to 5% by weight. Concentrates based on PVC should not be used. The final determination of color concentrate suitability should be determined by customer trials.
Purging
Purge thoroughly before and after use of this product with a low flow (0.5 - 2.5 MFR) polyethylene (PE) or polypropylene (PP).
Residence Time
The Dynalloy® OBC 8100-N50 has excellent 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 320 - 370 °F 160 - 188 °C
Center 350 - 380 °F 177 - 193 °C
Front 360 - 410 °F 182 - 210 °C
Nozzle 380 - 420 °F 193 - 216 °C
Mold 60 - 80 °F 16 - 27 °C
Molding Parameters English SI
Screw Speed 25 - 100 rpm 25 - 100 rpm
Injection Speed 1 - 3 in/sec 25 - 76 mm/sec
1st Stage - Boost Pressure 175 - 800 psi 1207 - 5516 kPa
2nd Stage - Hold Pressure 30 % of Boost 30 % of Boost
Back Pressure 0 - 100 psi 0 - 689 kPa
Hold Time (Thick Part) 3 - 10 sec 3 - 10 sec
Hold Time (Thin Part) 1 - 3 sec 1 - 3 sec