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Our 1.5D×38mm brightened regenerated polyester staple fiber is a professional cotton-type staple fiber, tailor-made for high-whiteness demands from global textile manufacturers, home textile brands, and nonwoven producers. Produced by Jiangyin Zhongjin Chemical Fiber Co., Ltd. (JZCF), a leading Chinese polyester fiber manufacturer with over 10 years of dedicated expertise, this fiber is made from high-purity virgin or regenerated polyester chips via melt spinning and specialized brightening setting process. Its universal 1.5D fineness and standard 38mm cotton-type length deliver full compatibility with conventional ring spinning and rotor spinning equipment, making it the premium raw material for mid-to-high end grey fabrics, home textiles, knitwear, and industrial textiles.
Pain Point: Generic polyester staple fiber often suffers from insufficient whiteness, easy yellowing, large batch-to-batch color difference, requiring extra secondary brightening that raises production costs, energy consumption, and fiber damage.
Solution: Our high whiteness polyester staple fiber adopts professional brightening and setting technology, with stable whiteness ≥88% (upgradable to ≥92% high-whiteness grade) and batch-to-batch whiteness difference ≤1 grade. It maintains excellent whiteness after repeated washing and sun exposure, with outstanding anti-yellowing performance.
Verifiable Evidence: Every batch comes with a third-party testing report, and it has been validated by downstream fabric mills to eliminate extra brightening processes, cutting production costs significantly.
Pain Point: Non-standard fiber specifications force textile mills to modify equipment, limit production flexibility, and increase inventory management pressure.
Solution: The 1.5D×38mm polyester staple fiber uses the industry’s universal cotton-type specification, which can be directly put into production without equipment modification, compatible with full-range yarn counts and woven/knitting processes.
Verifiable Evidence: This standard specification is widely adopted by thousands of global textile manufacturers, with a 99% carding pass rate to ensure smooth spinning production.
Pain Point: Global brands and manufacturers face growing sustainable procurement requirements, while needing to balance product quality and cost control.
Solution: We offer both virgin and regenerated raw material options. Our regenerated fiber provides full GRS certification for traceable sustainability, while non-fluorescent grade complies with infant textile safety standards.
Verifiable Evidence: Our products are certified by STANDARD 100 by OEKO-TEX® and ISO 9001:2015, with GRS certification for all recycled series.
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Parameter | Standard Specification | Key Notes |
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Raw Material Grade | Virgin / Regenerated Polyester Chips | Regenerated grade with traceable GRS certification |
Fiber Fineness | 1.5D (≈1.67dtex) | Industry universal fineness, balancing softness and tenacity |
Cut Length | 38mm | Standard cotton-type, fully compatible with ring/rotor spinning |
Whiteness | ≥88% (≥92% high-whiteness optional) | Batch-to-batch whiteness difference ≤1 grade |
Fluorescent Grade | Low-fluorescent / Non-fluorescent optional | Non-fluorescent grade meets infant textile safety standards |
Breaking Tenacity | ≥4.0cN/dtex (virgin); ≥3.5cN/dtex (regenerated) | Meets all conventional spinning and weaving requirements |
Oil Content | 0.15%~0.25% | Reduces static, improves carding and drawing smoothness |
Custom Options | Semi-dull/Full-dull, Anti-static modification | Tailored for specific application needs |
We implement a strict full-process quality management system, with every batch of brightened polyester staple fiber tested for whiteness, tenacity, and uniformity before delivery, accompanied by third-party testing reports. We guarantee a batch-to-batch whiteness difference ≤1 grade, with unconditional return and exchange for any unqualified whiteness performance. Our products hold authoritative international certifications including STANDARD 100 by OEKO-TEX®, ISO 9001:2015, and GRS certification for all regenerated series.
As a fully integrated polyester manufacturer established in 2015, we have an annual production capacity of 50,000 tons, ensuring stable bulk supply and on-time order fulfillment for global clients. Our production base is located in Jiangyin, Jiangsu, only 120km from Shanghai Port, providing convenient and cost-effective export logistics. We also offer 72-hour professional technical support for spinning and dyeing process issues, plus fully customizable fiber solutions to match unique application needs.
Yes, it is specially designed for perfect blending with cotton, viscose and other natural fibers. We recommend pre-blending in the opening process, with carding speed controlled at 10~15m/min for optimal spinning performance.
Yes, all our regenerated polyester staple fiber products come with full, traceable GRS certification, fully meeting global sustainable procurement requirements for international brands and manufacturers.
Our specialized brightening and setting process ensures excellent weather resistance. The fiber maintains stable high whiteness after 50+ times of washing and long-term sun exposure, with no obvious yellowing or graying.
