Defects in Blow Room Section | Problems, Causes and Way of Remedies in Blow Room | Causes and Remedies of Blow Room Section Faults
Blow Room in Spinning:
Blow room section plays an important role in textile spinning sector. It is the starting of the spinning operation where fibre tufts are opened, cleaned for producing required quality of yarn. During performing these operations several faults are produced in blow room which are deeply discussed in this article with their causes and remedies.
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| Causes and remedies of blow room section faults |
Faults in Blow Room:
Some common faults which are seen in blow room section have pointed out in the below:
- Irregular lap,
- Licking lap,
- Soft lap,
- Uneven lap,
- Split lap,
- Barrel shaped lap,
- Conical lap,
- Defective selvedge.
All the above faults have explained in the following with their causes and remedies:
1. Irregular lap:
Causes:
- It’s occurred due to uneven feeding of fibres to feed lattice.
- Defective regulating motion, swing door, case.
- Incorrect maintenance of machineries.
Remedies:
- Fault free regulating motion should be used.
- Machine maintenance should be perfect.
2. Licking lap:
Causes:
- Improper pressure of calendar roller.
- Too much fan speed.
- Lower opening of cotton.
- Incorrect roller motion setting.
Remedies:
- Necessary pressure of calendar roller should be used.
- Proper roller motion setting should be used.
- Fan speed should be correct.
3. Soft lap:
Causes:
- Lower amount of relative humidity.
- Improper pressure of calendar roller.
- Too much trash content of fibre.
Remedies:
- Relative humidity should be perfect.
- Proper pressure of calendar roller should be applied.
4. Uneven lap:
Causes:
- Defective regulating motion.
- Uneven feed of material.
- Incorrect machine maintenance.
Remedies:
- Fault free regulating motion should be used.
- Machine maintenance should be accurate.
5. Split lap:
Causes:
- Lower pressure of calendar roller.
- Variation of surface speed of top and bottom cage.
- Low temperature in the blow room section.
Remedies:
- Calendar roller pressure should be accurate.
- Required amount of temperature have to use in blow room.
6. Barrel shaped lap:
Causes:
- Accumulation of dirt at both sides of the cage.
- Excessive fan speed.
Remedies:
- After definite period of time, cage must be cleaned.
- Fan speed must be controlled here.
7. Conical lap:
Causes:
- Improper air flow.
- Variation of pressure at both sides of calendar roller.
- More air Intel at one side.
- Dirt drain in one side of cage.
Remedies:
- Pressure of calendar roller have to control.
- Proper air flow should be ensured here.
8. Defective selvedge:
Causes:
- Broken gear teeth or machine parts.
- Faulty surface of lattice.
- Faulty cage.
- Waste accumulation at the side of machine.
Remedies:
- Accurate maintenance of lattice.
- Proper maintenance of cage.
