Dynaflex™ G7640-9 (Black) GLS Thermoplastic Elastomer

Product Description

Dynaflex™ G7640-9 (Black) 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

Soft Touch, Rubbery Feel

General

Material Status

Commercial: Active

Availability

Asia Pacific

Features

General Purpose

Good Flow

Good Processability

Good Processing Stability

Uses

Consumer Applications

Flexible Grips

Gaskets

General Purpose

Overmolding

Seals

Soft Touch Applications

Sporting Goods

Agency Ratings

RoHS Compliance

Appearance

Black

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
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Features
Features may also be described by the following terms: 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
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™ G7640-9 (Black) with minimal property losses, provided that the regrind is free of contamination. To minimize losses during molding, the melt temperature should be as low as possible. The final determination of regrind effectiveness should be determined by the customer. The Dynaflex™ G7640-9 (Black) 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: 175 to 800 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

Dynaflex™ G7640-9 (Black)

Thermoplastic Elastomer

Supplied by GLS Thermoplastic Elastomers