ABSTRACT
A defect can arise due to malfunctioning of any machine part, a wrong selection of raw material, wrong selection of process parameters or lapse in following the standard operating procedures. They can be prevented and/or controlled by supervision and checking and strictly adhering to the established standard operating practices while manufacturing. Some customers mention them as conditions in their specifications so that the producer can take required precautions. These requirements are referenced by individual product specifications or procedures, which may also note exceptions and physical properties. The following are some of the examples as given by some customers in the market in the language used by them: 1. Dirt/grease – No soiling or grease spots allowed. It is acceptable if
the spots can be cleaned off. For dirt on the outside surface air, strip the yarn and make it as waste. For dirt on the ends, clean with sprayer. If dirt does not come off, reject to off grade.
