Product Description

Dynaflex® G2780-0001 is an easy processing TPE designed for injection molding and extrusion applications that require FDA compliance.


*Made with Kraton® Polymer

Features

-Soft Touch

-Rubbery Feel

-Excellent Colorability

-Overmold Adhesion to Polypropylene

-Good Ozone and UV Stability

Color

Translucent

Processing Method

Extrusion, Injection Molding

Mechanical Properties English SI Test Method
Shore Hardness, 10 sec delay 84 A 84 A ASTM D2240
Specific Gravity 0.90 0.90 ASTM D792, 23/23°C
Tensile Strength 1200 psi 8274 kPa ASTM D412-Die C, 2hrs,23°C
Elongation at Break 370 % 370 % ASTM D412-Die C, 2hrs,23°C
100% Modulus 840 psi 5792 kPa ASTM D412-Die C, 2hrs,23°C
300% Modulus 1140 psi 7860 kPa ASTM D412-Die C, 2hrs,23°C
Tear Strength 250 pli 44 kN/m ASTM D624
Thermal/Rheological Properties English SI Test Method
Melt Flow Rate @ 190°C, 2160g 5 g/10 min 5 g/10 min ASTM D 1238
Melt Flow Rate @ 200°C, 5000g 16 g/10 min 16 g/10 min ASTM D 1238
Apparent Viscosity @ 200°C 11170/sec 22000 cPs 22 Pa-sec ASTM D 3835
Aged Properties English SI Test Method
Compression Set, 22 hrs @ RT 18 % 18 % ASTM D 395B
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 Dynaflex® G2780-0001. Improved color dispersion can be achieved by using higher melt flow concentrates (with a melt flow from 25 - 40g/10 min). Typical loadings for color concentrates are 1% to 5% by weight. Liquid color can be used, but mineral oil based carriers may have a significant effect on the final hardness value. Concentrates based on PVC should not be used. A high color match consistency can be obtained by using precolored compounds available from GLS. 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).


Regrind
Regrind levels up to 20% can be used with Dynaflex® G2780-0001 with minimal property loss, provided that the regrind is free of contamination. To minimize losses during molding, the melt temperature 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 - 0.015 in/in 0.009 - 0.015 mm/mm ASTM D 955
Residence Time
The Dynaflex® G2780-0001 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 270 - 340 °F 132 - 171 °C
Center 340 - 370 °F 171 - 188 °C
Front 370 - 405 °F 188 - 207 °C
Nozzle 370 - 405 °F 188 - 207 °C
Mold 60 - 80 °F 16 - 27 °C
Molding Parameters English SI
Screw Speed 40 - 100 rpm 40 - 100 rpm
Injection Speed 1 - 5 in/sec 25 - 127 mm/sec
1st Stage - Boost Pressure 100 - 500 psi 689 - 3447 kPa
2nd Stage - Hold Pressure 70 % of Boost 70 % of Boost
Back Pressure 0 - 150 psi 0 - 1034 kPa
Hold Time (Thick Part) 4 - 10 sec 4 - 10 sec
Hold Time (Thin Part) 1 - 3 sec 1 - 3 sec