Question:
Main objective of De-sizing is ________.
Main objective of De-sizing is ________.
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Warp yarns are coated with starch paste before weaving. De-sizing takes that coating off.
Updated On: Oct 19, 2026
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Solution and Explanation
Step 1: Know what size is:
Before weaving, warp yarns are coated with a paste called size.
Size is mostly starch, and sometimes gelatin, PVA or CMC. It makes the yarn strong and smooth so it does not break on the loom.
Step 2: Why size must go:
After weaving, the size is no longer useful.
It stays on the cloth as a stiff film. It blocks water, dye, bleach and finishing chemicals from reaching the fibre.
Step 3: What de-sizing does:
De-sizing is the process of removing this size from the grey fabric.
For starch size, the cloth is treated with enzymes (amylase), dilute acid or hot water. This breaks the starch into soluble sugars that wash out.
Step 4: State the objective:
The main objective is to remove the size material from the fabric so that later processes like scouring, bleaching and dyeing work evenly.
Final Answer:
The main objective of de-sizing is the removal of size (starch) from the fabric.
Before weaving, warp yarns are coated with a paste called size.
Size is mostly starch, and sometimes gelatin, PVA or CMC. It makes the yarn strong and smooth so it does not break on the loom.
Step 2: Why size must go:
After weaving, the size is no longer useful.
It stays on the cloth as a stiff film. It blocks water, dye, bleach and finishing chemicals from reaching the fibre.
Step 3: What de-sizing does:
De-sizing is the process of removing this size from the grey fabric.
For starch size, the cloth is treated with enzymes (amylase), dilute acid or hot water. This breaks the starch into soluble sugars that wash out.
Step 4: State the objective:
The main objective is to remove the size material from the fabric so that later processes like scouring, bleaching and dyeing work evenly.
Final Answer:
The main objective of de-sizing is the removal of size (starch) from the fabric.
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