list of defects in woven fabric
TRANSCRIPT
Yarn Related Defects
Mixed End/ Thick End:It can be identified as the warp end having larger diameter than the other warps
Slub Or Slug:
Abnormally thick place occurring in the yarn that affects the fabric’s appearance
Warp Direction Defects
Reedy Fabric Marks:
Appearance of fine cracks across the fabric between warp end groups which resemble denting pattern in the reed
Warp Streaks:
Warp streaks can be identified as the warp way stripes of shade variations occurring between groups of threads
Misdraws / Wrong Draw:Design or stripes in the final fabric being damaged due to drawing of incorrect ends
Broken / Missing End:It can be identified as the space created in the fabric when a yarn partially or completely is missing from the fabric
Weft Direction Defects
Starting Marks:Thick or thin places occurring in fabric due to pick density variation when starting the loom, causing starting marks
Filling/Weft Bars
Broken Pick:
Broken Pick defect can be identified as the weft inserted to only a partial portion of the pick
Broken Pattern:This defect occurs on drop box looms for fabrics that have patterns. If the sequence of weft yarn colour breaks or pattern width of particular colour is distorted, broken pattern defect appears
Double Pick:
This defect happens when more than one pick is inserted in the single shed
Gout:
Appearance of foreign matter or contamination like lint, waste, etc woven into the fabric
Sloughing off:
When a bunch of or coil of yarn slips from the pirn during weaving then thick yarn bunches or coils appear on the fabric
Snarl:
When yarn doubles back on itself especially of high twist yarn are used snarling appears. It can be found randomly spread across fabric width or only in a region nearbythe selvedge
Visit www.stitchdiary.com to know about this topic
Image sources: http://textilelearner.blogspot.in/ http://tohproblemkyahai.com/ http://www.garmentsmerchandising.com/ http://www.slideshare.net/hiteshhobbit/ http://opticalengineering.spiedigitallibrary.org/