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Understanding Polyester DTY Yarn and its Variants - HIM, SIM, NIM. What is Roto and Tex ?

Polyester Drawn Textured Yarn (DTY) is a versatile and widely used type of polyester yarn known for its unique properties and applications in various industries. In this blog, we will delve into the details of DTY yarn, explore its variants - HIM, SIM, NIM, and Roto, and understand the concept of Tex in the context of polyester yarn.


Polyester DTY Yarn:

Polyester DTY yarn is created by twisting and drawing Polyester Partially Oriented Yarn (POY). This process enhances the yarn's strength, elasticity, and texture, making it suitable for a wide range of applications. DTY yarn can be used as a single yarn or blended with other types of threads to achieve specific characteristics in the final product.


Variants of Polyester DTY Yarn:



HIM (Highly Intermingled Yarn): HIM DTY yarn undergoes a special intermingling process that imparts a high level of interlacing between filaments. This intermingling enhances the yarn's bulkiness, softness, and thermal properties, making it ideal for applications where these characteristics are desired.

SIM (Semi-Intermingled Yarn): SIM DTY yarn has a moderate level of interlacing between filaments compared to HIM yarn. This variant offers a balance between bulkiness and strength, making it suitable for a wide range of textile applications. SIM is also known as LIM or Lightly Intermingled.

NIM (Non-Intermingled Yarn): NIM DTY yarn lacks the intermingling process, resulting in a smoother and more uniform yarn structure. NIM yarn is known for its high strength and durability, making it suitable for applications requiring these properties.


Roto & Tex

Roto & Tex are another way to classify Polyester DTY yarn. 

Roto: Roto refers to the process of texturing polyester yarn in which the yarn is highly intermingled. It is the same as HIM.

Tex: Tex are the type of texturised yarn that are not as intermingled as the roto. SIM and NIM come under it.  

In conclusion, Polyester DTY yarn and its variants - HIM, SIM, NIM, along with the concept of Roto and Tex, play a crucial role in the textile industry, its applications and price.