Enzymatic Desizing Process

Enzymatic Steeping
Enzyme is one kind of bio-catalyst. Its molecular is high but different from chemical catalyst. The action of enzyme controlled by temperature, concentration, time and pH of the solution

• Enzymes are living organism. 
• Its is based on protein .
• It's main function is formation of starch.
• Soluble in water but insoluble in acid and alcohol.

Types of Enzyme : 

Enzyme
SL	Animal	Vegetable
1	Viverel	SL	Malt-extract	SL	Bacterial
2	Novofermosal	1	Dastator	1	Rapidase
3	Degomma	2	Diastace	2	Biolase
4	Pancreatic	3	Malto stage	3	Bactolase
		4	Malto ferment

• Malt Extract: Malt Extract Enzyme are obtained by extraction of freshly germinated barely..
• Bacterial: The fermentation of Bacterial Enzyme is obtained from bacillus substituent which grows on rice and breaks down the starch into water soluble dextrose.

##  Condition of desizing of different enzyme...

SL	Enzyme	Temp	PH		Required cons.
1	Malt- Extract	55-60	6-7.5		3-20 gm/l
2	Bacterial	60-70	5.5-7.5		0.1-1 gm/l
3	Animal	50-55	6.5-7.5		1-5 gm/l

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Singeing And Desizing

 Figure :Gas Singeing

Singeing : It is an operation carried out to remove lose fiber, hairy fiber, protruding fiber from the surface of the clot.

Types Of  Singeing Maching

1. Plate Singeing Machine.
2. Roller Singeing Machine
3. Gas Singeing Machine.

Features of Gas Singeing Machine

• Both side singeing,
• Natural gas and compressed air
• Gas burner width and thickness adjust
• Two or more burner
• Speed of the Machine
• Water Bath

Caring should be taken at the time of Singening
Flame should be effected. Fabric should be dry, Fabric component should be clean, Power failure must be checked, Electromagnetic device should be checked, Speed should be the same.

Figure: De sizing Process

De-Sizing : De-sizing is the process by which the sizing materials are removed. This is the main function of a desizing process. There are different types of sizing materials are found. They are, Stretch, PVC, Polyester Blend sizing materials, CMC etc.

Classification of De-sizing method:

Desizing
Hydroid			Oxidative
Rot step	Acid Step	Enzyme step	Bromide	Chloride	Per-oxide

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Steps in wet Processing System

There are 3 different steps in the wet processing system. They are :

1. Pretreatment Steps
2. Coloration Steps
3. Finishing Steps.

1. Pretreatment Steps 

• Singeing
• De sizing
• Scouring 
• Bleaching
• Mercerising

2. Coloration Steps: 

• Dyeing and Printing

3.  Finishing Steps

• Soft Finish.
• Hard Finish.
• Medium Hard Finish
• Wrinkle free finish.
• Mercerizing.
• Water Repellent .

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