WELCOME TO OUR PRESENTATION

ID : 152-23-4328

Department of Textile Engineering

Daffodil International University

OUR PRESENTATION TOPIC IS

“SINGEING AND BIOPOLISHING”

Singeing:

The processor of removing projected fiber by burning process is called singeing.

Effect of singeing: To remove the loose or protruding fibres from the surface

of fabric or yarn. To obtain a smooth surface. To increase the luster of the fabric or yarn. To minimize the tendency of pill formation in wear.

Types of singeing process:Plate singeing processRoller singeing processGas singeing process

Guide roller

Brush

Gas plateGas

burner

Suction hood

Washing unit

water

Squeezing roller

Double burner gas singeing process :

Advantages of Gas Singeing Process:

In the process it is possible to maintain the uniform temperature, so uniform singeing is possible.

Both sides of the fabric can be singeing.The process is continuous, so there is no hamper in

production.

Disadvantages of Gas Singeing Process:Fabric or yarn speed must be maintained accurately,

otherwise fabric will not be singed evenly and there is a risk of whole fabric to get burning.

The process is not suitable for synthetic fabric singeing.

Technical Parameters of a Gas Singeing Machine:

For fabric:Fabric surface width: Up to 3.5 metersOperating speed: 70-140No. of gas burners:1-10Fuels used: Natural Gas, Oil, Coal.

For yarn:Operating Speed: 1000-1500No. of burner positions: 8-16Fuels used: Natural gas, Oil, Coal

Causes of Defects in Gas Singeing Process:Dirty burners can produce spots on the fabric

surface.Uneven singeing takes place due to the

folding of fabric selvedge during process.Fabric singeing will not be uniform if fabric

speed is not under controlled.Faulty singeing takes place if the distance

between gas burner and fabric surface is not maintained properly.

Bio-polishing:This is a process to remove the protruding

fibers from the surface of a fabric or yarn through the action of an enzyme.

Importance of Bio-polishing:Bio-polishing is a finishing process that

improves fabric quality by mainly reducing fuzziness from the fabric surface.

Bio-polishing is a important process to eliminate micro fibrils of cotton through the action of enzyme.

Cleaner surface of fabric is possible to achieve.

Optimum Condition of Bio-polishing:

In bio-polishing, pH of the bath is adjusted within 4.5-5.5. Temperature needs to be maintained between 40-50 C and process time is maintained between 45-55 minutes.

Tentative Recipe for Bio-polishing:Cellulase enzyme: 1%Acetic acid : 0.5 gm/literpH : 4.5-5.5Temperature : 40-50*cTime : 45-55 minutes

THANK YOU