Little knowledge, quarter-finished fabric appearance inspection standards.
The highest score for any single spot is four points. No matter what size
(or meters) There are many defects in the fabric, and the score for each straight line (or meter) of the fabric must not exceed four points. The inspector is about 3 feet away from the fabric, with the fabric facing up when inspected and placed on a running cloth inspection machine with good lighting conditions . For defects that appear continuously, such as cross-overs, edge-to-edge chromatic aberration, roll-to-roll chromatic aberration, narrow or irregular widths, creases, uneven finishing, etc., the defects per yard (or meters) should be evaluated. Four points.
The four-point system is actually the number of defects per 100 square feet (or square meters) converted into "standard points."
* It is generally recommended that no more than 40 points per roll can be accepted. Each batch of cloth should not exceed 28 points.
* The weft and bow lapping test methods for woven fabrics and knitted fabrics have national standards. See GB/T 14801-2009.
*A third-party agency is commissioned by the customer to go to the factory to inspect the fabric, sampling quantity = Each person can inspect 1200 yards per day (manufactured with too much width). According to the variety, specification, color, random draw 1~3%, if the fabric is less than 200 meters, do all the tests.
* See the relevant standards for specific implementation, for example: China National Standard GB/T 22846-2009, American Standard ASTM D5430-93.
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