Different Types of Defects in Fabric?

Fabric Defects :

Fabric Defects are divided into two types:

• Removable defects
• Non removable defects

Major Fabric Defects:

Starting mark:

Causes: Main cause is loom stoppage.
Remedy: This cannot be avoided but can be controlled by starting mark setting.

Reed mark:

Causes:  If any fault occur at reed Faulty denting in the reed.
Remedy:  Right selection of the reed and right denting.

Snarl:

 Causes: Excess main nozzle pressure Low filling tension

Remedy: Main nozzle air pressure control Correct setting of the PFT finger value

Double pick:

Causes: Cutting problem of the cutter. Faulty setting of the air pressure.
 Remedy: Cutter position is to be set correctly. Air pressure should be reset.

Miss pick/ broken pick:

Causes: Excess air pressure of main nozzle
Remedy: Main nozzle air pressure should be reduced

Warp breakage:

Causes: Bad sizing
Low strength of the yarn Crossing of the warp yarn

Remedy: Re knotting Proper sizing

Loose or Tight (Sizing Fault):

Causes: Knotting is given, when breaks yarn, the yarn tension does not match with other yarn as a result Loose or tight occurs.

Filling Stop:

Causes: If weft is failed to reach FD1 If weft is too long & reach FD2
 Remedy: Correct setting of the weft length Correct setting of main nozzle
Correct setting of relay nozzle Proper setting of air pressure Proper setting of pre-winder Proper setting of creel position

Oil Mark or Crease Hole:

• When fabric gets spots of oil lubrication from any part.
• It is a yarn fault, Plastic Others are mixed with yarn.
•  It is the dark color or thick weft lines in the fabric.

Crease Mark:

•  Creases occur due to improper finishing.