Different Size Ingredients | Function of Size Ingredients

Friday, May 18, 2012

Different Size Ingredients | Function of Size Ingredients

75% of size ingredients & it will continue till to near future. Common starches are potato, maize etc. Wheat flour, corn flour.

Synthetic: Polyvinyl alcohol, Carboximethyl cellulose, Polyacryloamide.

Functions:

Coat the warp yarn with a film.

Impart smoothness.

Blind the protruding fibres to the yarn surface.

Increase elasticity.

2. Lubricants or Softeners:

Vegetable & animal fats, Japan wax, tallow, cotton seed & castor oils, stearine, glycerin, soap, TRO etc.

Function:

To give a softer feel to the sized yarn.

To reduce stickiness of yarn.

To smoothen the yarn.

3. Antiseptic or Anti Mildew Agent:

Phenol, boric acid, carboxylic acid, zinc chloride, sodium silicofluoride, cresol etc. The quantity used is very low 0.1 to 2%.

Function:

To prevent the growth of mildew.

To prevent spoiling of the size mix during storing it for long time.

To help to store the sized yarn.

4. Wetting Agent:

Sulphanol A, soap, avirol, alizarin oil etc. The amount of wetting agents introduced into the size should not exceed 0.1 to 0.15 gm/ltr.

Function:

To improve the size wet ability.

Improve the penetration of the size between the fibres.

Uniform distribution of the sizing solution on the yarn surface is obtained.

5. Antifoaming Agent:

Silicones, stearine-paraffin emulsions, benzene, pyridine. The antifoaming agents in amounts of 0.05 to 0.1 gm/ltr are stirred in a small quantity of warm water.

Function:

To prevent formation of foam.

6. Tinting Agent:

Blue is used as tinting agent.

Function:

To increase the brightness & remove yellowish color of yarn.

To prevent dusting off.

To form a particular shade.

7. Weighting Agent:

The most commonly used substances are soluble inorganic powders such as china clay, talc, barium or calcium sulfate.

Function:

To give additional weights to the goods.

To prevent opening of cloth

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Friday, May 18, 2012