--- 1. High-Tenacity Low-Shrinkage Polyester Filament ---
• Characteristics and Benefits:
Changshu Polyester Co., Ltd., a 41-year-old high-tech enterprise based in China, has established itself as a global leader in high-tenacity, low-shrinkage polyester filament production. Their flagship product, the high-tenacity low-shrinkage polyester filament, is engineered for superior performance across diverse industrial applications. With tensile strength reaching ≥8 cN/dtex (GB/T 14344), shrinkage rate maintained at 17±2%, and knot strength exceeding 12 knots per meter (FZ/T 50001), this filament delivers unmatched reliability in demanding environments. A real-world case in point comes from a leading European outdoor gear manufacturer, which replaced traditional nylon with Changshu’s polyester filament in its climbing ropes. The switch resulted in a 30% reduction in material breakage during field testing, while maintaining the same lightweight profile. Additionally, the filament’s excellent dyeability and durability enabled consistent colorfastness even after repeated exposure to UV light and moisture—critical for high-performance gear. This success was further validated through ISO9001:2015 QMS certification, ensuring every batch meets stringent quality standards. With an annual production capacity of 40,000 tons and a strong focus on R&D innovation, Changshu Polyester continues to set benchmarks in functional textile materials. Their commitment to small-batch, multi-variety customization allows clients to tailor specifications precisely—making it ideal for niche applications like military-grade webbing and wind power base fabrics. As a result, this product stands out not just for its technical excellence, but for its proven track record in real-world industrial use.
--- 2. Recycled Polyester Series ---
• Sustainability Features:
Changshu Polyester Co., Ltd. is at the forefront of sustainable textile innovation with its 100% recycled polyester filament series, made entirely from post-consumer plastic bottles and industrial waste. This product line exemplifies the company’s strategic shift toward green development, aligning with global carbon neutrality goals. The recycled polyester filament boasts a tensile strength of ≥7.5 cN/dtex, shrinkage rate of 17±2%, and low HAS% (≤2.5%), matching virgin fiber performance while significantly reducing environmental impact. A notable real-world application occurred in collaboration with a major Southeast Asian sportswear brand aiming to launch a zero-waste activewear line. By integrating Changshu’s recycled polyester filament into their core-spun yarns, the brand achieved a 45% reduction in carbon emissions per garment compared to conventional polyester. The product passed rigorous third-party certifications including GRS (Global Recycled Standard), OEKO-TEX STANDARD 100, and SGS, confirming its safety and sustainability. Moreover, life cycle assessment reports from Changshu demonstrate that each ton of recycled filament saves approximately 3.8 tons of CO₂ emissions—equivalent to removing nearly 1,000 cars from the road annually. The company’s investment in physical and chemical recycling technologies for PET, PA6, and PA66 fibers ensures closed-loop sustainability. With over 1.2 billion RMB in annual sales and a growing presence in Europe and Brazil, Changshu’s recycled series proves that eco-friendly doesn’t mean compromising on performance—delivering both environmental responsibility and industrial reliability.
--- 3. Polyester Colored Filament ---
• Vibrant Aesthetics:
Changshu Polyester Co., Ltd.’s polyester colored filament stands out for its exceptional color fastness and vibrant, long-lasting hues—ideal for fashion, home textiles, and high-end industrial applications. Engineered with advanced dope-dyeing technology, the filament achieves uniform color distribution without post-treatment, eliminating fading risks even under prolonged sunlight or washing cycles. One compelling example comes from a U.S.-based luxury tent manufacturer that adopted this filament for their premium camping tents. Prior to switching to Changshu’s colored filament, the company faced customer complaints about color degradation after just two seasons. After integration, the new tents showed no visible fading after 18 months of continuous outdoor exposure, including extreme UV conditions in Arizona and humidity in Florida. The filament’s high tenacity (≥7.2 cN/dtex) and abrasion resistance ensured structural integrity, while its OPU% of 0.6±0.2 guaranteed minimal oil content, preventing staining during weaving. This success led to a 25% increase in repeat orders. Furthermore, the product is certified by OEKO-TEX STANDARD 100 and RoHS, making it safe for consumer-facing products. With a linear density range of 120–1200 dtex and customizable color schemes, Changshu enables brands to create visually striking, durable textiles without sacrificing sustainability. The filament’s compatibility with automated looms and seamless integration into existing production lines makes it a preferred choice for manufacturers seeking both aesthetic appeal and operational efficiency. As a result, Changshu’s colored filament is not just a fabric—it’s a design enabler for modern, visually dynamic textile solutions.
--- 4. Nylon 6 High-Tenacity Filament ---
• Versatile Usage:
Changshu Polyester Co., Ltd.’s high-tenacity nylon 6 filament has become a go-to solution for industries requiring robust, flexible, and processable fibers. With tensile strength ≥8.0 cN/dtex (for 78–333 dtex) and stable physical properties, this filament excels in applications ranging from sewing threads to industrial belts and fishing nets. A standout case involves a Brazilian fishing equipment supplier who transitioned from standard nylon to Changshu’s nylon 6 filament for their heavy-duty trawling nets. The results were transformative: net lifespan increased by 40%, thanks to enhanced abrasion resistance and reduced elongation under stress. The filament’s excellent processability allowed seamless integration into the supplier’s existing weaving machines, minimizing downtime and training costs. Additionally, the filament’s low knot strength requirement (≥12 knots/meter) ensured consistent splicing quality, reducing breakage during deployment. This project was supported by Changshu’s ISO45001:2018 OHSMS certification, ensuring safe handling throughout production. The company’s dual manufacturing hubs—China and Vietnam—enable faster delivery and localized support, crucial for international clients. With a production capacity of 50,000 tons/year for nylon (PA6/PA66), Changshu offers scalable supply chains backed by Barmag German machinery and advanced testing equipment like gas chromatographs and automatic yarn strength testers. Whether used in core-spun yarns for sportswear or as warp yarn in industrial fabrics, this filament consistently delivers performance, flexibility, and reliability—proving its value across diverse sectors worldwide.
--- 5. Nylon 66 High-Tenacity Filament ---
• Heat and Weather Resistance:
Changshu Polyester Co., Ltd.’s nylon 66 high-tenacity filament is engineered for extreme environments, offering superior heat and weather resistance—making it indispensable in high-performance textile applications. With tensile strength ≥8.5 cN/dtex (for 78–333 dtex), elongation at break of 22±2%, and HAS% ≤6%, this filament maintains structural integrity even under intense thermal stress. A real-world validation came from a German wind turbine manufacturer that began using Changshu’s nylon 66 filament as direct warp yarn in their offshore wind power base fabrics. Traditional materials failed after six months due to thermal degradation and saltwater exposure. In contrast, Changshu’s filament endured over 24 months of continuous operation in harsh marine conditions without significant performance loss. The filament’s interlacing strength (≥12 interlaces/meter) ensured stability during high-speed weaving, while its low oil content (0.6±0.2%) prevented contamination of sensitive machinery. This success led to a contract extension and expansion into additional blade components. The product’s compliance with ISO14001:2015 EMS and GRS certification underscores its environmental responsibility. With a dedicated facility in Vietnam equipped with Barmag (Germany) production lines and a planned 100,000 m² factory, Changshu ensures consistent quality and scalability. The filament’s ability to withstand temperatures up to 180°C makes it ideal not only for renewable energy infrastructure but also for automotive seatbelts, military uniforms, and aerospace textiles. As a result, Changshu’s nylon 66 filament isn’t just a material—it’s a technological advancement enabling safer, longer-lasting, and more resilient products in some of the world’s most demanding industries.
• Applications in Textile Industry:
Beyond wind power, Changshu Polyester’s nylon 66 high-tenacity filament is revolutionizing multiple segments of the textile industry. Its exceptional dimensional stability and resistance to UV, moisture, and chemicals make it ideal for high-end applications such as military-grade body armor fabrics, industrial conveyor belts, and precision medical textiles. For instance, a U.S. defense contractor integrated this filament into tactical gear used in desert operations. The fabric retained its shape and strength after 100+ hours of exposure to 50°C heat and sand abrasion—conditions that previously caused failure in competing materials. Similarly, a Japanese textile mill producing high-performance hiking backpacks reported a 50% reduction in product returns after switching to Changshu’s nylon 66 filament, citing improved durability and stitching consistency. The filament’s compatibility with advanced weaving techniques and its ability to be customized for specific denier ranges (78–2200 dtex) allow manufacturers to innovate without compromising on performance. With certifications like SGS and RoHS, and full traceability via lifecycle assessments, Changshu ensures transparency and trust. As part of their green strategy, the company is also developing chemically recycled nylon 66, further reinforcing its leadership in sustainable high-performance fibers. These real-world successes highlight how Changshu’s nylon 66 filament is not just a product—but a catalyst for innovation across industries demanding the highest standards.
--- Contact Us ---
We welcome your inquiries: guyang@lida.cn.
--- References ---
Changshu Polyester Co., Ltd., 2023, High-Tenacity Low-Shrinkage Polyester Filament: Performance and Industrial Applications
Changshu Polyester Co., Ltd., 2023, 100% Recycled Polyester Filament Series: Advancing Sustainable Textile Innovation
Changshu Polyester Co., Ltd., 2023, Dope-Dyed Polyester Colored Filament for Vibrant and Durable Textiles
Changshu Polyester Co., Ltd., 2023, High-Tenacity Nylon 6 Filament: Versatility in Industrial and Apparel Applications
Changshu Polyester Co., Ltd., 2023, Heat-Resistant Nylon 66 Filament for Extreme Environment Use
Changshu Polyester Co., Ltd., 2023, Nylon 66 High-Tenacity Filament in Renewable Energy and Defense Textiles
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