Geon© WEAS81L is a Vinyl Foam Concentrate for Wire and Cable Extrusion. This product is an exothermic type blowing agent intended to be used with a wide range of Wire and Cable Vinyl formulations to provide a degree of foaming under normal conditions of between 10% and 17%. Values of around 10% are recommended to maintain physical properties. The percentage blow can be reduced by either cutting back on the level of addition or by reducing the air space between the extruder head and the water-cooling trough. The cell structure achieved should be small and just visible under normal viewing, and should be evenly distributed through the extrudate. |