Defects in woven fabric can be a result of yarn imperfections, incorrect weaving process or errors in the finishing process. This ppt will help you in getting a gist of the defects. Visit http://stitchdiary.com/defects-woven-fabric/ to know more about these defects.

2. Yarn Related Defects

3. Mixed End/ Thick End:
It can be identified as the warp end
having larger diameter than the
other warps

4. Slub Or Slug:
Abnormally thick place occurring in
the yarn that affects the fabric’s
appearance

5. Warp Direction Defects

6. Reedy Fabric Marks:
Appearance of fine cracks across the
fabric between warp end groups
which resemble denting pattern in
the reed

7. Warp Streaks:
Warp streaks can be identified as
the warp way stripes of shade
variations occurring between groups
of threads

8. Misdraws / Wrong Draw:
Design or stripes in the final fabric
being damaged due to drawing of
incorrect ends

9. 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

10. Weft Direction Defects

11. Starting Marks:
Thick or thin places occurring in
fabric due to pick density variation
when starting the loom, causing
starting marks

12. Filling/Weft Bars

13. Broken Pick:
Broken Pick defect can be identified
as the weft inserted to only a partial
portion of the pick

14. 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

15. Double Pick:
This defect happens when more
than one pick is inserted in the
single shed

16. Gout:
Appearance of foreign matter or
contamination like lint, waste, etc
woven into the fabric

17. 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

18. 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 nearby
the selvedge

19. Visit www.stitchdiary.com to know about this topic

20. Image sources:
 http://textilelearner.blogspot.in/
 http://tohproblemkyahai.com/
 http://www.garmentsmerchandising.com/
 http://www.slideshare.net/hiteshhobbit/
 http://opticalengineering.spiedigitallibrary.org/