Question

2. What variations could be done with polyester ?
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Answer 1

Answer:

Variation in polyester-viscose and polyester-cotton ring and rotor yam characteristics as a consequence of fibre cross-section

Variations on the Basic Polyester 2) Changing the shape of the spinneret--The simplest and most common shape is a circle, but by changing ths shape of the spinneret, square, oval, and bean-shaped fibers can be formed. One can even create a hollow fiber. The different shapes affect the hand and strength of the fiber.