Question 03 (Textile Engineering & Fibre Science)
For poly (ethylene terephthalate), which of the following will have the highest crystallinity ?
| (A) | Amorphous chips |
| (B) | LOY |
| (C) | POY |
| (D) | FDY |
[Show Answer]
D
Frequently Asked Questions | FAQs
What is POY in polyester?
POY stands for “Partially Oriented Yarn” in polyester manufacturing. It is a type of polyester yarn that has been partially stretched during the manufacturing process, resulting in increased strength and durability.
In the manufacturing process of POY, polyester chips are melted and extruded through a spinneret to form continuous filaments. The filaments are then partially oriented through a stretching process while they are still hot, which aligns the polymer molecules and imparts strength to the yarn. The partially oriented yarn is then wound onto bobbins and sent for further processing or used directly for weaving or knitting.
POY is a versatile material that can be used in a variety of applications, including textile fabrics, industrial textiles, and packaging. It can also be further processed into fully-oriented yarn (FOY) or draw-textured yarn (DTY), which have different properties and applications.