Question

Fibers prepared by melt spinning include which of the following?
(A). Glass
(B). Polyester
(C). Acrylic
(D). Nylon
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only.
• B. (A), (B) and (C) only.
• C. (A), (B), (C) and (D).
• D. (B), (C) and (D) only

Hint:

Remember:
- Melt Spun: Nylon, Polyester, Polypropylene, Glass.
- Solution Spun (Wet/Dry): Acrylic, Spandex, Rayon, Acetate.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Spinning is the process of extruding liquefied polymer through a spinneret to form filaments. Melt spinning involves melting the polymer chip and extruding it, followed by cooling to solidify the fiber.

Step 2: Detailed Explanation:
Let us review the spinning methods of the given fibers:
1. Polyester (B) and Nylon (D): Thermoplastic polymers that melt easily without thermal degradation. They are manufactured via melt spinning because it is simple, economical, and solvent-free.
2. Glass (A): Glass is melted at high temperatures and drawn directly through platinum alloy orifices into fine filaments (melt-drawn/melt-spun).
3. Acrylic (C): Acrylic cannot be melt-spun because it decomposes before reaching its melting point. It must be dissolved in a solvent and extruded via dry or wet solution spinning.
Therefore, (A), (B), and (D) are melt spun.

Step 3: Final Answer
The correct option is (A).