SIZING

Defination of sizing:-

Sizing is the process of applying size ingredients (starch or solution) to the warp yarn. There are different types of sizing processes which are coming as under 

Image of sizing machine used in weaving.

TYPES OF SIZING:-

Sizing process is classified into four types given below;  

Sizing is the process of applying size ingredients (starch or solution) to the warp yarn. There are different types of sizing processes which are coming as under 

Image of sizing machine used in weaving

TYPES OF SIZING MACHINE:-

Sizing process is classified into three types given below;  

(1) Pure sizing.

(2) Light sizing.

(3) Medium sizing.

(4) Heavy sizing.

1) PURE SIZING.

This type of sizing process is used to produce unbleached fabrics . In case of pure sizing , upto 10% ingredients are used in warp yarn.

2) LIGHT SIZING.

If the fabric is to be dyed or printed , then light sizing is applied. 11-15% of size ingredients is used in this method for warp.

3) MEDIUM SIZING.

In case of sizing 16-40%of size ingredients are used in warp.

4) HEAVY SIZING.

During heavy sizing more than 40% of size ingredients are used in warp yarn.

PROPERTIES OF SIZE INGREDIENTS:-

Important of size ingredients are 

(1) Ingredients should not cause and degradation to the textile materials.

(2) It should provide excellent properties.

(3) It should be coherent with the sizing machinary and its associated parts.

(4) It should not change the colour of coloured yarn of colored shade.

(5) It will be that , which imparts the least exfoliation.

(6) It should be easily remove during wet process. 

(7) Adhesive substance must be more adhesive.

 (8) Sizing ingredients should should not cause any kinds of health hazard 

(9) These ingredients should be always natural . 

(10) It should not do any harm to the yarn and fiber. 

(11) Sizing ingredients should be always cheap.

(12) These kind of ingredients should be available easily in market.

(13) Sizing receipie must be that which provide lower end breakages.

(14) This kind of ingredients must be easily washable that impart easy-desizing

(15) These kind of ingredients should have ability to dry instantly after completing sizing process.

Ref:-https://textiletitorials.com