List Of Size Ingredients And Their Functions

What are the size ingredients?

Sizing is called the heart of weaving. The materials that are used for sizing are called size ingredients. A gelatinous film-forming substance in solution or dispersion applied, normally used for warp yarn but sometimes used for weft yarn before weaving is called size.

Size Ingredients and Their Functions

Different types of size ingredients are used for sizing. The following are the main ingredients for sizing:


Generally, the starch of maize, corn, rice, potato, and CMC, PVC are adhesive types. When tamarind is used as adhesive on jute yarn. Moreover, the adhesive is in granule form that mixes with water and is heated to form a paste which ultimately becomes viscose fluid. The following are the functions of adhesive. They are-


  • Firstly, adhesive use to increase strength.
  • Secondly, it use to impart adhesion making the yarn less hairy.
  • Thirdly, to increase abrasion resistance.
  • After that, adhesive increase smoothness.
  • Then, it increase elasticity a stiffness.
  • Lastly, it use to reduce extensibility.


There are different types of lubricating agents such as Japan wax, Tallow, Mineral waxes, Vegetable waxes, Animal fats, Mineral oils, and Vegetables. The following is the functions of lubricants or softener. They are-


  • Firstly, softener makes the yarn soft and slippery.
  • Secondly, it reduces stiffness.
  • After that, it increases yarn smoothness.
  • Finally, lubricants use to increases elasticity.

Antiseptic or Anti Mildew Agent

There are different antiseptic agents such as Salicylic acid, Carbolic acid, Zinc chloride, Phenol. The following are the functions of antiseptic or anti-mildew agents. They are-


  • Firstly, it prevents mildew formation.
  • Secondly, it uses to preserve size materials for a long time.
  • It also helps to store the yarn for a long time.
  • Lastly, to protect yarn from bacteria or fungus.

Deliquescent or Hygroscopic Agent

There are various types of deliquescent or hygroscopic agents such as Glycerin, Calcium chloride. In fact, the deliquescent agent is those substances that absorb moisture from the air. The following are the functions of deliquescent or hygroscopic agents. They are-


  • Firstly, it prevents excess drying of yarn.
  • Secondly, it helps to absorb moisture from air.
  • Lastly, to prevent the brittleness of size.

Weighting Agent

Basically, China clay, Sodium phosphate is a weighting agent. These are used especially for those fabric or yarn that is to be solid or grey state. The following are the functions of weighting agents. They are-


  • It increases the weight of yarn.
  • To impart fullness and fell to the fabric.

Anti Foaming Agent

There are different types of anti-foaming agents such as Pyridine, Benzene. The following are the functions of anti-foaming agents. They are-

Function: To prevent foam formation is the main function of the anti-foaming agent.

Tinting Agent

Blue is used as a tinting agent.

Function: Tinting agent used to increase luster or brightness.

Wetting Agent

There are various types of wetting agents such as Sulphanol A, soap, avirol, magnesium chloride. Consequently, the drawback of these substances is their high foaming ability and the foam is very stable. The following are the functions of wetting agents. They are-


  • Firstly, it increases size exhaust.
  • After that, it use to obtain a uniform distribution of sizing solution on yarn surface.
  • Lastly, it helps to wet yarn instantly.

So, when we will choose size ingredients for sizing we should remember the functions of size ingredients. Various dyes and chemicals manufacturing companies produce size ingredients, choose your favorite one from there.

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  • Bhuvnesh Jhawar

    SANDESH GROUP importer of sizing additives and auxiliaries.
    Contact : 9764089998.

  • Ravindra

    How softner works with yarn while sizing .
    Explain in detail.
    Which softner may be beat??

  • c shankar

    Need sizing recipe for Polywool ( blend 40 : 60 )

  • Geogy Abraham

    We need size recipes for 30s carded yarn for getting 12/ pick up, recipes rates also need

  • Anup Mule

    Please guide for sizing spun viscose yarn along with manufacturer name of viscose sizing chemicals.

  • Momin tahoor

    How to use china clay to increase weight in pc and pv yarn sizing reciepe.

  • Momin tahoor

    How to use china clay for inreasing weight in sizing reciepe

  • Momin tahoor

    How to use china clay for increasing wt in sizing reciepe

  • We need sizing recipes for 40 Poly cotton blend yarn. 200 end in weaving machine.

    • D.P.K.Kasillingam

      We are sizing all kinds of PV PC Modal Cotton Rayon yarn by using
      PVPC 100 material which was manufactured by Ananth Chems,Erode.
      Contact No.9842721391

  • Edward Greisch

    How do you get the sizing starch back out?

    • Abhijeet

      I m starting sizing project please suggest me sizing recipe

    • Julie Tsong

      Dear Edward Greisch,

      We are professional team in textile sizing. If you applied the right sizing agent, it will be very easy to get the sizing starch back out.

      Best regards,

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