Causes and solutions to problems that may occur during production

　Causes and solutions of possible problems with dyed fabrics in the production process

　　1 Weaving defects

　　Weaving defects in the warp or weft direction appear regularly or irregularly on the fabric.

　　Main reasons:

　　① The strength of the yarn used is not enough.

　　② The yarn is poorly sized (light or heavy).

　　③ Weaving equipment is poor (when the weaving equipment fails, it will cause problems such as broken yarn).

　　④ The repair of the off-machine grey cloth is not complete.

　　⑤ The acceptance of the finished product is not careful.

　　Solution: Strengthen the repair.

　　2 Latitude oblique/latitude arc (including size grid)

　　For woven fabrics and knitted fabrics with 2% weft slant/weft arc, and all fabrics with more than 3% crooked can not be classified as first-class products.

　　Main reasons:

　　① Poor weaving equipment (when the weaving equipment fails, it will cause a lot of downtime, resulting in weft inclination/weft arc)

　　② Mainly refers to the weft inclination/weft arc caused by poor finishing equipment).

　　③ Poor finishing (weft inclination/weft arc caused by the operator's irresponsibility during finishing).

　　Solution: Strengthen repair and rearrangement (weft correction).

　　3 The shrinkage rate is large

　　When the shrinkage rate of the warp and weft directions of the fabric exceeds the specified value, it cannot be designated as a first-class product. Different fabrics will have different ranges.

　　Main reasons:

　　① Poor sorting after finishing.

　　② Poor pre-shrinkage equipment.

　　Solution: pre-shrink again (within the specified shrinkage rate)/fabric shrinkage washing, etc.

　　4 The feel is not consistent with the standard

　　The feel of the finished fabric is inconsistent with the feel of the standard sample, and there are obvious differences.

　　Main reasons:

　　① Poor sorting after finishing.

　　② The raw materials are incorrect.

　　③ The production process is incorrect.

　　Solution: Reorganize/reproduce.

　　5 Unqualified color fastness

　　The color fastness of fabrics (yarn-dyed fabrics and dyed fabrics) cannot be consistent with the requirements

　　Main reasons:

　　① Poor dyeing process.

　　② The dyeing raw materials are poor.

　　③ Poor sorting after finishing.

　　④ Poor operation. (Especially obvious when paint scraping/paint dyeing)

　　Solution: re-fixing finishing/re-producing fabrics/re-dyeing (dyed cloth is OK)/color repairing (paint scraping/paint dyeing fabrics are OK)

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