T: +86-13758587081
E: longtaiyarn@sina.com
E: longtaiyarn@sina.com
Longtai Textile, Building 58, Yuwang Xincun, Datang Street, Zhuji City, Shaoxing City, Zhejiang Province, China.
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20s 30s
longtai
This 30s/1 ring spun polyester yarn is engineered specifically for sock production, combining consistent fiber structure with stable performance across commercial manufacturing processes. The ring-spun technique twists and condenses polyester fibers into a uniform strand, resulting in minimal surface hairiness and reduced friction against skin. This yarn maintains structural integrity, color consistency, and fit through repeated use and washing, making it suitable for commercial sock production lines. It is available in 20s and 30s counts, with black as the standard color option.
Parameter | Specification |
Material | 100% virgin polyester, FDA-approved for direct skin contact |
Yarn Count | 30s/1 |
Available Yarn Range | 8s-40s |
Twist Level | 80–120 turns per meter (TPM) |
Color Fastness (UV) | ISO 105-B02 rating 4–5 |
Shrinkage Rate | <3% after 10 wash cycles at 40°C |
Moisture Absorption | <0.5% |
UV Protection | UPF 50+ (blocks 98% of UV rays) |
Certifications | OEKO-TEX Standard 100 Class II, REACH compliant |
Package | Approximately 25kg per bag |
Delivery Time | 10 days |
The calibrated twist profile of this yarn provides balanced elasticity and recovery. It retains over 90% of its original elasticity after 50 standard wash cycles, outperforming conventional polyester yarns by 25% in durability tests. This characteristic ensures finished socks maintain their fit over time, reducing product returns for commercial users.
With a moisture absorption rate of less than 0.5%, this yarn limits sweat retention and bacteria buildup. This property reduces unpleasant odors during extended wear, making it suitable for socks designed for all-day use and active environments.
The uniform thickness and minimal hairiness of this ring spun yarn allow smooth processing on high-speed seamless knitting machines. This consistency reduces yarn breakage and production downtime, improving efficiency for industrial manufacturing operations. Optimal results are achieved with 30–32 gauge needles for fine stitch definition.
This yarn has a UPF 50+ rating, which blocks 98% of harmful ultraviolet rays. This feature adds functional value to socks intended for outdoor use, such as hiking, running, and travel socks.
This yarn is used in the production of compression socks, running socks, and cycling socks. Its moisture management properties, breathability, and shape retention support the performance requirements of athletic apparel, where consistent fit and durability are critical.
Trusted for diabetic socks and orthopedic hosiery, this yarn is non-irritating and hypoallergenic due to its FDA-approved material and OEKO-TEX certification. Its uniform texture avoids pressure points on sensitive skin, meeting the strict standards of medical textile applications.
Designer brands use this yarn for intricate patterns, jacquards, and vibrant color designs. Its consistent fiber structure ensures sharp, clear design definition, while its color fastness rating preserves color intensity through repeated washing.
This 30s/1 ring spun polyester yarn meets international safety and environmental standards for commercial use. It holds OEKO-TEX Standard 100 Class II certification, confirming it is free from harmful substances and suitable for direct contact with skin. It is also fully REACH compliant, containing no substances from the 200+ restricted substances list. The virgin polyester material is FDA-approved for direct skin contact, providing additional assurance for products intended for prolonged wear.
Yes. It retains over 90% of its original elasticity after 50 standard wash cycles, due to its optimized twist structure and high-quality virgin polyester fibers.
Yes. Its uniform thickness and minimal hairiness support seamless knitting technology. For optimal stitch definition, we recommend using 30–32 gauge needles.
When stored in cool (15–25°C), dry (relative humidity 40–60%) conditions away from direct sunlight, this yarn has a shelf life of 24 months.
To request samples or receive a detailed quote for your commercial production needs, please contact our sales team. We offer customized solutions for different yarn counts and color requirements based on your specific manufacturing specifications.
