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