These liquid coatings are applied at a variety of stages in the manufacturing process, sometimes as early as fiber extrusion in synthetic fiber manufacture, but sometimes as late as application to woven or non-woven fabrics.Application of the correct amount of liquid coating is critical for both performance and economic reasons.
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- Too much coating can lead to insufficient inter-fiber cohesion, buildup on downstream machinery, uncontrolled fiber behavior, problems with downstream processes such as dyeing, and, of course, too much coating is an unnecessary increase in cost in a very cost-sensitive industry.
- Conversely, too little coating leads to problems from excessive friction, likely to cause yarn breakage, excessive static charge build-up, causing erratic fiber behavior, and uncontrolled performance in downstream processes.