HMLS (High Modulus Low Shrinkage) polyester yarn is a type of polyester yarn that has been engineered to have high tensile strength and low shrinkage properties. It is made by spinning polyester fibers at high temperatures and then stretching them to orient the molecular chains in the fibers.

The resulting HMLS polyester yarn has a higher modulus of elasticity than regular polyester yarn, which means it is more resistant to stretching and deformation under stress. It also has low shrinkage, which means it maintains its size and shape even after being subjected to high temperatures or moisture.

HMLS polyester yarn is commonly used in the production of industrial textiles, such as conveyor belts, tire cord, and geotextiles. It is also used in the manufacture of high-performance fabrics for applications such as outdoor gear, automotive upholstery, and marine products.

Overall, HMLS polyester yarn is valued for its strength, durability, and resistance to shrinkage and stretching. Its high performance properties make it a popular choice for a wide range of applications where reliability and longevity are critical.