Extrusion of Monofilament

Monofilament is usually extruded using a conventional screw extruder of rather small size, through a die consisting of a series of holes. The monofilaments are extruded downward into a tank of water (quench tank) from which they go to pull-rolls to he drawn and oriented. The physical properties of the strands depend on the conditions of extrusion, on the degree of stretching, and on the temperature at which they are stretched. For HDPE, a melt temperature of between 260 and 290 °C is usually best. For LDPE, about 30 °C lower is better. Strength increases with draw ratio and generally levels out at ratios between 9 1 and 12 1. 

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Uses Nylon for extrusion of monofilaments, bristles, fishing lines, nets, film, stretched tapes and coatings Features Low-vise. 

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