GATE (TF) Textile 2019 Question Paper Solution | GATE/2019/TF/08

Question 08 (Textile Technology & Fibre Science)

For multifilament yarns, optimum add-on (%) of size is in the range

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Frequently Asked Questions | FAQs

What is size add-on in textile?

Size add-on refers to the amount of sizing material that is applied to yarn or fabric during the sizing process in textile manufacturing. Sizing is a process in which a protective coating, called size, is applied to the yarn or fabric to improve its handling properties during subsequent processing and to provide certain functional properties to the final textile product.
The amount of sizing material applied to the yarn or fabric is expressed as a percentage of the weight of the yarn or fabric. For example, if 5% size add-on is applied to a 1000-meter length of yarn, it means that 50 grams of sizing material has been applied to the yarn.
The size add-on is an important parameter in textile manufacturing because it can affect the properties of the final textile product. If too much sizing material is applied, it can cause the yarn or fabric to become stiff and brittle, making it more difficult to handle and reducing its flexibility. On the other hand, if too little sizing material is applied, it can result in poor weaving or knitting performance, resulting in a lower-quality final product.
Therefore, the size add-on must be carefully controlled during the sizing process to ensure that it is optimized for the specific type of yarn or fabric being sized and the desired properties of the final textile product.

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