Sizing Faults | Causes of Faults of Sizing

Improper size feed to the size box

Variable size level

Dilution of size

Strong squeezing of warp

Overslashed Warps:
Causes:

• Due to insufficient splitting of starch at size preparation


• Weak squeezing


• Too deep immersion of the warp into the size box

Sticky Warps:
Causes:

• High sizing speed


• Low drying temperature

Over Dried Warps:
Causes:

• Low sizing speed


• Long stoppage of machine during sizing


• Very high temperature in the drying section

Gum Spots and Smears:
Causes:

• Splashes of size get on the squeezed warp


• Bad stirring of starch at preparation


• Improper coating of felts on the squeezing rollers

Non Uniform Size Regains:
Causes:

• Irregular heating of the size in the box


• Dilution of the size with live steam


• Non uniform pressure of squeezing rollers

Crossed and Lost Ends:
Causes:

• Lease rods are set too far apart


• Broken ends are improperly pieced up


• Bad warping

Improper Build of Beam:
Causes:

• Incorrect spreading of yarn ends in the reed dents

Incorrect Warp Length:
Causes:

• Disarrangement of the measuring and marking mechanism


• Improper adjustment of measuring and marking mechanism

Dirt Stains in Warp:
Causes:

• The size boxes and machine metal parts are dirty


• The size is cooked in non-galvanized iron kettles.

Shinnery:
Causes:

• Due to the friction between the yarn and drying cylinder

Sandy Warp:
Causes:

• Due to not crushed or grind the size material

Hard Sizing:
Causes:

• Excessive application of size material

Size Dropping:
Causes:

• Due to not optimum viscosity of the size solution

Uneven Sizing:
Causes:

• Due to over and under sizing