List of Defects in Weaving, Knitting and Nonwoven Fabric Production
Shareful Islam Palash
Lecturer, Institute of Textile Engineering & Information Technology
Email: palash313@gmail.com
What is Defects?
The defects are the undesired effects of a product from the point of view of the customer. If a customer likes a feature in a product, it is termed as a salient feature or effect and if a customer dislikes it, it becomes a defect. Hence, while identifying a defect we need to see it from the perspective of a customer. In this article I will give list of defects produce during fabric production in weaving, knitting and nonwoven process.
Fabric Faults / Defects in Weaving:
- Warp way defect.
- Weft way defect.
- Fabric faults common to both warp and weft.
1. Warp way defect of fabric:
- Warp stitching.
- Broken warp end.
- Broken pick.
- Long float.
- Wrong warp.
- Missing warp.
- Double warp
- Reed mark.
- Knot in the warp.
- Tight warp.
- Slack warp.
- Warp steak.
- Selvedge effect;
- Curly/wavy effect.
- Corded selvedge.
- Weft breaks or cuts at the selvedge.
- Loops in the selvedge.
- Temple marks.
2. Weft way defect of fabric:
- Miss pick or broken pick.
- Thick and thin place.
- Broken pattern.
- Shuttle mark.
- Weft carls.
- Tight picks.
- Back lashing or lashing in.
- Starting mark.
- Cracks.
- Tear drops.
- Goat.
- Black picks.
- Finger mark.
- Bow effect.
- Knot in the weft.
- Catch knot.
3. Fabric defects common to both warp and weft:
- Cloudy or uneven cloth.
- Oil or grease sport.
- Holes in the cloth.
- Wavy cloth.
- Dirty cloth.
- Rusty fabric.
- Hairy or fussy fabric.
- Rough surface cloth.
- Dobby mistake.
- Loose end.
- Loose pick.
- Let-off bar.
Fabric Faults / Defects in Knitting:
- Broken ends or holes.
- Drop stitches.
- Ch fall out.
- Snagging.
- Tuck or double stitches.
- Bunching up.
- Vertical stripes.
- Horizontal stripes.
- Color fly.
- Distorted stitches.
Fabric Faults / Defects in Nonwoven Fabric Production:
- Weight variation.
- Needle break.
- Poor opening.
- Needle punch not up to the level.
- Weak adhesive.
- Defective spraying.
- Defective stitching.
- Defective felting.
- Defective bonding.
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- Major Defects in Fabric Find During Fabric Inspection
- Weaving Faults in Fabric | Causes and Remedies of Weaving Defects
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