Dyeing
Defects List of Knitted Fabric
The defect is the impurities for which
the fabric can be degraded to a lower grade or can be rejected. Fabric defect may
occur for many reasons. In this article, I will discuss the major defects
of knitted fabric.
Fabric faults may come from
different sources. The possible sources of fabric defects are listed below.
1. Defects from Yarn
Maximum number of defects come from
yarn. The main defects that occur from yarn are listed below.
✔ Thick and thin
✔ Slub
✔ Hairiness
✔ Knots
✔ Excessive weak and hard yarn
✔ Spun in fly
✔ Kitties
✔ Mix yarn
✔ Oily slub
✔ Loose yarn
✔ Slough off
✔ Unevenness
✔ Lot mixing
✔ Splice
2. Defects from Machine Setting
Some defects come from first time
machine for a new style or faulty machine set up. The main defects that occur from the machine setup are listed below.
✔ Unevenness
✔ Brocken ends
✔ Lycra out
✔ Missing yarn
✔ Hole
✔ Fabric press off
✔ Spirality
✔ Brocken stitch
3. Defects from Knitting Equipment
Some defects come from old or faulty
needle or sinkar. The main defects occur from machine setup are listed below.
✔ Needle mark
✔ Sinkar mark
✔ Drop stitch
4. Defects from Dyeing
Most of the important defect come
from the dyeing process. The main defects that occur from dyeing are listed below.
✔ Dull shade
✔ Poor color fastness
✔ Shade variation
✔ Color bleeding
✔ Crease mark
✔ Softener mark
✔ Rope mark
✔ Crocking
✔ Narre
✔ Tonal variation
✔ Color fadding
5. Defects from Finishing
Some defect come from dyeing
finishing process. The main defects that occur from dyeing are listed below.
✔ Bowing
✔ Sprility
✔ High shrinkage
✔ GSM variation
✔ Tonal variation
✔ Skewing or bias
✔ Loose thread
✔ Fold mark
✔ Squeezer mark
✔ Water mark
✔ Pinhole
✔ Pilling
✔ Inadequate pressing
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2 Comments
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