Question

Two x Two Rubia cloth needs

• A. Singing
• B. Calendaring
• C. Mercerizing
• D. Polishing

Hint:

• Rubia cloth} (often "Two x Two Rubia") is typically a fine cotton fabric.
• Singeing} is a finishing process that burns off protruding surface fibers from fabric or yarn, resulting in a smoother, cleaner surface and reduced pilling.
• Singeing is very common for cotton fabrics (like poplins, voiles, shirtings including Rubia types) to enhance their appearance and handle, especially before dyeing or printing.
• Mercerizing improves luster, strength, dye uptake. Calendering improves smoothness/luster. Polishing is for high luster. While these can be applied, singeing is key for surface cleanness.

Answer 1

The Correct Option is A

In the context of Textile Engineering and Fibre Science, the term Two x Two Rubia cloth refers to a type of fabric that requires a specific process called Singing. This process is essential for the manufacturing and finishing of the fabric. Let's explore why:

Singing (or more accurately singeing) is a process used in textile production to improve the smoothness of the fabric surface by burning off loose or protruding fibers. This results in a cleaner and more refined look for fabrics like Two x Two Rubia cloth, which is desirable for both aesthetic and functional reasons. The process involves passing the fabric over a flame or heated surface, ensuring the surface is smooth and even.

None of the other options listed pertain specifically to the needs of Two x Two Rubia cloth in terms of this particular process:

• Calendaring: This process involves the passing of fabric between heated rollers to produce smoothness and add sheen but does not specifically address fiber protrusion.
• Mercerizing: This involves treating cotton with sodium hydroxide, which improves strength and luster, but does not affect the immediate surface texture regarding fiber ends.
• Polishing: Typically related to finishing processes that may add sheen but do not specifically remove surface fibers like singing does.

Thus, Singing is the apt procedure for the specific requirements of Two x Two Rubia cloth.