EVAL GF-20 Eval Ethylene Vinyl Alcohol

Product Description
Processing anomalies such as fish-eyes and buildup of decomposed material on the extruder screw are occasionally observed in PP-EVOH regrind extrusion. These anomalies are caused by the regrind degradation resulting from the interaction between EVOH and the impurities and additives in PP. EVAL Americas GF-20 is a stabilizer masterbatch designed to prevent these anomalies.
General
Material Status	Commercial: Active
Availability	North America
Forms	Pellets
Processing Method	Extrusion

Physical	Nominal Value	Unit	Test Method
Density		g/cm³	ISO 1183
Melt Mass-Flow Rate (MFR) (190°C/2.16 kg)		g/10 min	ISO 1133
Thermal	Nominal Value	Unit	Test Method
Melting Temperature (DSC)		°F	ISO 3146
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: EVAL® GF-20, EVAL GF20, EVAL® , EVAL, EVALGF20, GF, GF-20, GF20, GF:20, GF/20, GF+20, GF_20, GF 20, Ethylene Vinyl Alcohol, EVOH, Vinyl Alcohol, VOH, EthyleneVinylAlcohol, VinylAlcohol, 20GF

Extrusion Notes
The recommended design for metering screws: L/D Ratio: 24 to 30 Compression Ratio: 2.6 to 3.6 Zone Distribution: Feed: 8 to 10 D Compression: 8 to 10 D Metering: 8 to 10 D The recommended design for barrier screws: L/D Ratio: 24 to 30 Compression Ratio: 2.5 to 3 Zone Distribution: Feed: 6 to 7.5 D (25% of screw length) Transition and Melting: 12 to 15 D (50% of screw length) Metering: 6 to 7.5 D (25% of screw length)

EVAL® GF-20