Sinopec Yizheng Chemical Fibers has established the world’s largest polyester staple fiber production base

Yizheng Chemical Fiber’s polyester staple fiber products enjoy a high brand reputation in the market, and their product range can be divided into six major categories comprising nearly a hundred different varieties. The newly built 200,000-ton per year melt-direct spinning eco-friendly short fiber production facility is a key project undertaken by Yizheng Chemical Fibers to implement Sinopec’s development strategy of \"one foundation, two wings, and three innovations.\" It focuses on improving quality and efficiency, developing high-end synthetic materials for medical and health applications, and meeting the new needs related to people’s healthier lifestyles. The facility primarily produces key products such as virgin polyester hollow fibers and polyester short fibers for spun-bond non-woven fabrics. It is reported that the virgin polyester hollow fibers produced by Yizheng Chemical Fibers, thanks to their permanent three-dimensional curling, excellent fluffiness and resilience, as well as light weight, good thermal insulation properties, and antibacterial and antifungal characteristics, are not only widely used in high-end bedding and cold-weather clothing, but also serve as the main material for manufacturing hospital bedding, mattresses, and pillow fillings. During the pandemic, Yizheng Chemical Fiber’s original polyester hollow fibers were sent to Hubei, Shandong, Zhejiang, Tianjin and other regions to assist in the fight against the epidemic, and demand for these products remained high.

Polyester short fibers used in spunbond non-woven fabrics are primarily employed in medical and health applications such as disinfection wipes, medical gauze, and wound dressings; demand for them rose rapidly during the pandemic. The project establishes a newly built, fully enclosed and clean production line that, while meeting market demands, aims to address industry challenges such as contaminated fibers and foreign particles in polyester short fibers used in spunbond non-woven fabrics. In recent years, the polyester staple fibers used in Yizheng Chemical Fiber’s spunbond non-woven fabrics have achieved a market share of over 70% in high-end markets such as the medical and healthcare sector. Once the project for producing 200,000 tons per year of environmentally friendly short fibers through melt spinning is fully operational, Yizheng Chemical Fiber’s polyester short fiber production lines will number 48, making it possess the most comprehensive set of production lines and product varieties in the world. The cotton that can be replaced by these fibers is enough to produce 2 new sets of clothing for each person in the country each year.

There is also a polyester hollow fiber quilt given by Yihua at home, which allows me to experience firsthand what it’s like to use oil instead of cotton.

How was the experience? Warmth retention, moisture absorption, breathability. . . . . :lol

The effect is great; it’s just too light, lacking the heaviness of cotton.

That’s your problem; dealing with the weight issue isn’t that easy for you. Go get some weights some other time.

December 3, 2003, 16:46 – Textile Network. To meet the needs of various spunbond non-woven fabrics, Yizheng Chemical Fibers collaborated with the Non-Woven Fabric Center at Donghua University and Donglun Technology Industry Company to establish a collaborative R&D framework that integrated industry, academia, and research efforts; as a result, polyester staple fibers specifically designed for spunbond non-woven fabrics were developed successfully. 　　It is understood that this specialized fiber has four key features: it possesses good antistatic properties, as well as good clumping and opening capabilities, and its fibers are free from any defects ； It has a good feel and a suitable initial modulus ； Appropriate oils and oil contents are used to ensure low foaming and safety in hard water, thereby effectively reducing the load on the water circulation system and minimizing process fluctuations ； It can meet the safety requirements for fibers in terms of hygiene, health care, and food ； By using appropriate process parameters, the fibers achieve a suitable breaking strength and elongation, ensuring that the fabric possesses good tear strength and ductility. 　　After being tested by four companies including Donglun Technology Industry Co., Ltd. and Henan Piaonan High-Tech Co., Ltd., this specialized fiber has proven to be effective: the specialty short fibers used for hydroentanglement have stable performance, and it is convenient for users to switch between different types without any issues with process control ； Fibers specifically designed for spunbonding can improve the uniformity of the web, with a significant reduction in the CV value ； Under polyester/cellulose 50/50 and 100% polyester conditions, the strength of the spunbond fabric increased by 15%–25% ； The ratio of longitudinal to transverse strength of spunbond fabric improves significantly ； In water treatment and water filtration processes, foaming is not significant, which is beneficial for the technological treatment of water ； Under the same mechanical conditions, it can effectively reduce water pressure and save energy. 　　It is also reported that the company is currently planning to further expand its market presence, focusing on the development of specialized fibers such as spunbonded fabric bases, medical materials, and high-quality cleaning cloths.