Method for producing polyamide monofilaments and monofilament for technical fabric

摘要

The process produces vacuole-free coarse polyamide monofilaments having diameters of from 0.8 to 1.5 mm. It includes preparing a mixture including from 75 to 85 percent by weight polyamide 66 and from 25 to 5 percent by weight polyamide 6; immediately after preparing the mixture, extruding and spinning it to form crude monofilaments and after the extruding and spinning, cooling down the crude monofilaments in a liquid. Addition of at least 30 ppm of Cu to the mixture prior to extruding and spinning produces heat-protected coarse monofilaments.