Ply yarns

Ply yarns characteristics, properties, types and application

1. Ply yarns, their manufacturing , types, properties and application areas in technical textiles ALISHBA SHAFIQ 20-NTU-TE-0070 This Photo by Unknown author is licensed under CC BY-SA-NC .

2. CONTENTS

3. Introduction A yarn in which two or more single yarns are twisted together in a single operation, for example two-fold, three-fold, four fold. Yarn ply is often used to describe how thick or thin a yarn is which is not always technically correct. For example, a 4 ply yarn can be thicker than a yarn with 8 plies if the single strands were thicker to start with. 

4. Types of ply yarn

5. Types of ply yarns Two-ply yarns are made by twisting two single yarns. Three-ply yarns are made by twisting three single yarns. Four-ply yarns are made by twisting four single yarns. By twisting two or more ply yarns we can produce cord yarn which has high strength and by twisting two or more  cord yarns  we would produce  rope yarn

6. Manufacturing The method of yarn plying used by manufacturers depends on whether they want to produce a handspun, machine-spun, or a special type of yarn.  Regular Chain or Navajo Machine Special

7. Different types of twist in yarn ply Z-TWIST Aptly named, the fibers' angle in a Z-twisted yarn resembles the letter Z because the manufacturers spun them clockwise. The resulting Z-twisted yarn is best for making left-handed twills. S-TWIST With the angles resembling the letter S, the fibers or strands of S-twisted yarns were spun in a counter-clockwise direction. They're the perfect yarn for making right-handed twills

8. Properties of ply yarn Plied yarns are not only more even and of enhanced strength , they are durable , flexibl e, and low twists may be used to give a soft hand. Acrylic and wool yarns are often plied for the hand knitting market; this is because of the soft hand that can be created.

9. Properties of ply yarn Uniformity Stronger Strength variation Torque Balanced yarn Lustre Round  High abrasion resistance

10. Testing protocol for ply yarns

11. Applications 2 Ply 3- Ply Cabled yarn Poplins Sewing threads Industrial yarns Voiles Industrial yarns Electrical insulation Gabardines Canvas Shoe laces Crepes Filter cloths Cords Sewing threads Conveyor belts V-belts General purpose Embroidery Embroidery