What is unique about 7.5N polyester loop yarn compared to other polyester yarns?

1. Unique morphological structure
7.5N polyester loop yarn is a kind of fancy yarn. This yarn is usually composed of three parts: core thread, pressure thread and decorative thread. The core thread and pressure thread are often made of wool spinning materials such as chemical fiber filament or acrylic fiber, while the decorative thread is used to form regular loop effects on the fancy twisting machine. These loop effects give the finished yarn a unique appearance and texture. Compared with other polyester yarns, the unique morphological structure of 7.5N polyester loop yarn gives it stronger visual appeal and hand experience, and is suitable for making various textiles that require special appearance effects.

2. Excellent physical properties
Abrasion resistance:
7.5N polyester loop yarn inherits the strong wear resistance of polyester fiber. Its wear resistance is second only to nylon (nylon), which is extremely wear-resistant, and is better than other natural and synthetic fibers. This makes it perform well in making textiles that need to withstand frequent friction and wear, such as sportswear, outdoor equipment, etc.
Lightfastness: Polyester fiber itself has good lightfastness, and 7.5N polyester loop yarn's lightfastness is second only to acrylonitrile fiber, showing high durability. This means that it is not easy to fade or age when exposed to sunlight for a long time, making it suitable for making outdoor products and textiles that need to keep bright colors for a long time.
Elasticity: 7.5N polyester loop yarn has elasticity close to wool, and can almost fully recover even when stretched by 5% to 6%. Its wrinkle resistance is also better than other fibers, making the fabric less prone to wrinkling and having good dimensional stability. This elasticity gives it a significant advantage in making textiles that need to maintain good shape and elasticity, such as tights, swimwear, etc.
Strength: Whether it is short fiber or high-strength fiber, polyester fiber has very high strength. 7.5N polyester loop yarn also inherits this feature, and its wet strength is close to dry strength, thanks to its low moisture absorption. Its impact strength is 4 times that of nylon and 20 times that of viscose fiber. This makes it more reliable when making textiles that need to withstand greater tension and impact.
3. Good chemical stability
7.5N polyester loop yarn can resist corrosion from bleach, oxidants, hydrocarbons, ketones and petroleum products. It is also resistant to dilute alkali and is not afraid of mold, but hot alkali may cause it to decompose. This good chemical stability makes it perform well in the production of textiles that need to undergo various chemical treatments, such as dyeing and printing.

4. Unique dyeability and functionality
Although the dyeability of polyester fiber is general, the loop structure of 7.5N polyester loop yarn provides more possibilities for dyeing. Through special dyeing processes, the loop part and the core part can present different colors or patterns, thereby increasing the visual effect and added value of the textile. Through modification technology, 7.5N polyester loop yarn with special functions such as antibacterial and flame retardant can also be produced to meet the needs of specific application scenarios.

5. Wide range of application fields
The uniqueness of 7.5N polyester loop yarn is also reflected in its wide range of application fields. Due to its unique morphological structure, physical properties and chemical stability, as well as unique dyeability and functionality, it is widely used in clothing, home textiles, industrial textiles and other fields. In the clothing field, it can be used to make sportswear, outdoor equipment, tights, etc.; in the home textile field, it can be used to make bedding, curtains, etc.; in the field of industrial textiles, it can be used to make automobile interiors, filter materials, etc.