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Dynaflex™ G7670-1 (Natural)

Thermoplastic Elastomer

Supplied by GLS Thermoplastic Elastomers

The technical datasheet with complete property values for Dynaflex™ G7670-1 (Natural) is available to members of the Prospector Plastics Database.
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Product Description
Dynaflex™ G7670-1 (Natural) is an easy processing, general purpose TPE designed for a wide variety of applications, including those where FDA compliance is required.
  • Overmold Adhesion to Polypropylene
  • Rubbery Feel
  • Soft Touch
General  
Material Status 
  • Commercial: Active
Availability 
  • Asia Pacific
Features 
  • General Purpose
  • Good Colorability
  • Good Flow
  • Good Processability
  • Good Processing Stability
Uses 
  • Consumer Applications
  • Flexible Grips
  • Gaskets
  • General Purpose
  • Overmolding
  • Seals
  • Soft Touch Applications
  • Sporting Goods
Agency Ratings 
  •  1
RoHS Compliance 
Appearance 
  • Natural Color
Forms 
  • Pellets
Processing Method 
  • Extrusion
  • Injection Molding
  
Physical
Nominal Value
Unit
Test Method
Specific Gravity
 
 ASTM D792
Melt Mass-Flow Rate (MFR) (200°C/5.0 kg)
g/10 min
 ASTM D1238
Molding Shrinkage - Flow
in/in
 ASTM D955
Elastomers
Nominal Value
Unit
Test Method
Tensile Stress 3, 4
     ASTM D412
100% Strain, 73°F
psi
  
300% Strain, 73°F
psi
  
Tensile Strength 3, 4 (Break, 73°F)
psi
 ASTM D412
Tensile Elongation 3, 4 (Break, 73°F)
%
 ASTM D412
Tear Strength
lbf/in
 ASTM D624
Compression Set (73°F, 22.0 hr)
%
 ASTM D395B
Hardness
Nominal Value
Unit
Test Method
Durometer Hardness (Shore A, 10 sec)
 
 ASTM D2240
Fill Analysis
Nominal Value
Unit
Test Method
Apparent Viscosity (392°F, 11200 sec^-1)
Pa·s
 ASTM D3835
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: Dynaflex™ G7670-1, Dynaflex G7670 1, Dynaflex™ G7670-1 (Natural), Dynaflex G76701 Natural, Dynaflex™ , Dynaflex, DynaflexG76701Natural, G 7670 1, G 7670, G76701, G7670-1, G7670 1, G 7670 1 Natural, G7670-1 (Natural), G76701 Natural, G7670:1 (Natural), G7670:1, G7670/1 (Natural), G7670/1, G7670+1 (Natural), G7670+1, G7670_1 (Natural), G7670_1, G7670 1 (Natural), G7670, 76701, 1Natural, G76701Natural, G7670_1 Natural, G7670 1 Natural, G7670_1Natural, Thermoplastic Elastomer, TPE, GLS, ThermoplasticElastomer, 7670G
Features
Features may also be described by the following terms: Good Colorability, Good Flow, Good Processability, Easy Processing, Good Processing Stability, Good Process Stability.
Uses
Uses may also be described by the following terms: Flexible Grips, Gaskets, Gasketing.
Agency Ratings
This plastic material has 1 certifications from the following agencies (the number in parentheses shows the number of certifications for that agency): FDA (1).
Injection
Nominal Value
Unit
 
Suggested Max Regrind
%
  
Rear Temperature
°F
  
Middle Temperature
°F
  
Front Temperature
°F
  
Nozzle Temperature
°F
  
Mold Temperature
°F
  
Back Pressure
psi
  
Screw Speed
rpm
  
Injection Notes
Color concentrates with polypropylene (PP), ethylene vinyl acetate (EVA), or low density polyethylene (PE) carriers are most suitable for coloring Dynaflex™ G7670-1 (Natural). 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. 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.

Purge thoroughly before and after use of this product with a low flow (0.5 - 2.5 MFR) polyethylene (PE) or polypropylene (PP).

Regrind levels up to 20% can be used with Dynaflex™ G7670-1 (Natural) 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.

Dynaflex™ G7670-1 (Natural) 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 is not Required

Injection Speed: 1 to 3 in/sec
1st Stage - Boost Pressure: 350 to 900 psi
2nd Stage - Hold Pressure: 30% of Boost
Hold Time (Thick Part): 3 to 10 sec
Hold Time (Thin Part): 1 to 3 sec
Notes
1Please contact GLS Thermoplastic Elastomers for a copy of the FDA compliance letter.
2Typical properties: these are not to be construed as specifications.
3Die C
42 hr
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.