In the fields of industrial production and high-end manufacturing, material loss under high temperature environments has always been a pain point in the industry – conventional polyester spunbond hot-rolled fabrics are prone to softening, shrinkage, deformation, and even delamination and damage in environments above 150 ℃, which cannot meet the long-term usage needs of metallurgy, automotive, high-temperature filtration and other fields.
Recently, Dongguan Liansheng Non woven Technology Co., Ltd. (hereinafter referred to as “Dongguan Liansheng”) has launched a heavyweight high-temperature resistant polyester spunbond hot-rolled fabric, successfully breaking through the bottleneck of high temperature tolerance. It can work stably for a long time in extreme high temperature environments of 200 ℃, filling the market gap of high-end high-temperature resistant non-woven fabrics in the region and providing a new solution for downstream industries in high-temperature scenarios.
As a company deeply engaged in the field of non-woven fabrics, Dongguan Liansheng was established in 2020, focusing on the research and development, production, and sales of non-woven fabrics, filter materials, and other products. With advanced production equipment and solid technical accumulation, it has steadily deepened its presence in the polyester spunbond non-woven fabric field. The launch of high-temperature resistant products is a concentrated reflection of the company’s technological innovation strength. It is reported that this high-temperature resistant polyester spunbond hot rolled fabric is made from high-quality polyester (PET) slices as the core raw material, relying on the optimization of the entire process. It not only achieves stability breakthroughs in high-temperature environments, but also takes into account the advantages of high strength and no delamination, breaking the industry limitation of “difficult to balance high temperature resistance and practicality” .
Stable performance at 200 ℃, far exceeding conventional products
The long-term use temperature of conventional polyester spunbond hot-rolled fabrics is mostly between 120 ℃ and 150 ℃. Once this range is exceeded, problems such as fiber softening, fabric shrinkage, and decreased mechanical properties will occur, especially in high temperature environments above 180 ℃, where melt dripping and delamination damage may occur, which cannot meet the needs of high-end industrial scenarios . The high-temperature resistant polyester spunbond hot-rolled fabric launched by Dongguan Liansheng has been tested and verified to be able to work continuously for more than 72 hours in a high temperature environment of 200 ℃, with a size shrinkage rate of ≤ 1%, no softening, deformation, or delamination, and a mechanical performance retention rate of over 95%, far exceeding the industry’s conventional standards .
More importantly, this product can still maintain excellent practicability in extreme high temperature environments – it not only has high temperature resistance, but also has good acid and alkali resistance, anti-aging performance, can resist chemical corrosion in high temperature environments, and at the same time, its tear resistance can reach more than 85N/5cm. Even under the working conditions of frequent friction and mechanical tension, it can maintain structural integrity without fiber shedding and hardening . Compared to conventional products, its high temperature resistance has been improved by more than 30%, and its service life has been extended by 2-3 times, completely solving the pain points of non-woven fabric wear and frequent replacement in high temperature scenarios, and significantly reducing the usage costs of downstream enterprises.
Dual upgrading of raw materials and processes, building a strong core advantage in high temperature resistance
The core breakthrough of Dongguan Liansheng’s high-temperature resistant polyester spunbond hot-rolled fabric comes from the dual innovation of raw material modification and production process, abandoning the limitations of traditional products that rely solely on additives to improve temperature resistance, and creating high-temperature stability from the source.
In terms of raw material selection, Dongguan Liansheng abandons conventional polyester chips and chooses high viscosity homopolymer polyester chips, combined with specialized high-temperature resistant modified masterbatch. Through solid-phase thickening technology, the molecular chain structure is optimized to improve the thermal stability and crystallinity of the fibers. Among them, the intrinsic viscosity of polyester chips is ≥ 0.72dl/g, much higher than the 0.64dl/g of conventional chips. Longer molecular chains can form a tighter winding network and are not easily broken in high temperature environments; Simultaneously adding polyester reinforced masterbatch within 5% not only enhances the tensile strength of the fibers themselves, but also effectively delays the oxidative degradation process at high temperatures, further strengthening their high-temperature resistance . In addition, the raw materials are individually pre crystallized and dried to avoid moisture affecting the melting quality and reduce issues such as layering and agglomeration from the source.
In terms of production technology, Dongguan Liansheng adopts internationally advanced production equipment, optimizes the parameters of the entire spinning and hot rolling process, and achieves a dual improvement in high temperature resistance and product quality . In the spinning process, twin-screw extrusion technology is used to accurately control the temperature of each section of the screw extruder at around 275 ℃, combined with an air flow tube drawing process. The drawing pressure is controlled at 4.8-5.2 bar to ensure that the polyester chips are fully melted and not carbonized, resulting in fibers with uniform diameter, fine fineness, and more orderly arrangement; In the hot rolling process, we break through the limitations of traditional techniques and use precise temperature control technology to control the temperature of the upper and lower rolls of the rolling mill at 264-269 ℃ and 242-246 ℃, respectively. The roll pressure is adjusted to 12.5-13.2Mpa, and customized engraved rollers are used to locally melt and firmly bond the fibers, forming uniform and dense rolling points. This not only avoids fiber brittleness caused by excessive melting, but also ensures that the fabric surface does not layer, further improving the structural stability in high-temperature environments.
At the same time, the enterprise has established a comprehensive online quality monitoring system to monitor real-time parameters such as temperature, pressure, and speed during the production process, ensuring stable and consistent high-temperature resistance of each batch of products, and building a solid product quality defense line from the production end.
Covering high-end industrial fields, unlocking new possibilities for applications
With the core advantages of 200 ℃ high temperature resistance, high strength, no delamination, and acid and alkali resistance, Dongguan Liansheng’s high-temperature resistant polyester spunbond hot-rolled fabric has successfully adapted to multiple high-end industrial scenarios, breaking the application limitations of traditional products and injecting new impetus into downstream industry upgrades.
In the metallurgical industry, it can be used as an inner lining for melting furnaces, insulation layer for high-temperature pipelines, welding protective cloth, etc. It can withstand high-temperature radiation during the smelting process, effectively block heat, protect equipment and operators’ safety, and its tear resistance and wear resistance can extend its service life and reduce replacement frequency ; In the field of automobile manufacturing, it can be used as a protective cloth around the engine, an exhaust pipe insulation layer, a high-temperature filter material, etc., to adapt to the high-temperature environment during engine operation, avoid the influence of high-temperature softening on the stability of automobile components, and at the same time, lightweight design can also help save energy and reduce consumption in automobiles .
In the field of high-temperature filtration, it can be used for industrial waste gas filtration, high-temperature flue gas filtration and other scenarios. It can still maintain good filtration performance in a 200 ℃ high-temperature flue gas environment, with stable particle capture efficiency and the advantages of acid and alkali resistance and corrosion resistance, adapting to complex industrial flue gas environments ; In addition, this product can also be applied to high-end packaging, cable wrapping, industrial insulation and other scenarios, especially suitable for packaging needs that require high-temperature sterilization and storage, as well as insulation protection in high-temperature environments, demonstrating a wide range of application potential .
It is worth mentioning that the weight of this product can be controlled between 100-250g/㎡, and the width can be freely cut according to customer needs. The maximum width can reach 3200cm, and the annual output can reach 10000 tons, which can meet the bulk purchasing needs of different downstream customers.
Breaking through the Situation with Innovation, Seizing the Advantage of High Temperature Resistant Non woven Fabric Market
With the continuous upgrading of downstream high-end manufacturing, metallurgy, automotive and other industries, the demand for materials in high-temperature environments is increasingly strong, and the high-temperature resistant non-woven fabric market is facing broad development space . Dongguan Liansheng has a precise understanding of market demand and focuses on technological innovation. The high-temperature resistant polyester spunbond hot-rolled fabric launched this time not only fills the market gap of related products in the region, but also breaks the technical limitations of traditional products, demonstrating the company’s research and development strength and innovative concepts.
As a non-woven fabric enterprise integrating research and development, production, and sales, Dongguan Liansheng always adheres to the concept of “quality first, innovation driven”, has a professional R&D team and advanced production equipment, and focuses on the iterative upgrading of non-woven fabric products. The launch of high-temperature resistant products is an important measure for the enterprise to deeply cultivate segmented markets and enhance core competitiveness. In the future, Dongguan Liansheng will continue to increase research and development investment, optimize product performance, expand more high-end application scenarios, and rely on its own production advantages to provide customized and high-quality non-woven fabric solutions for downstream customers, helping downstream industries to develop with high quality and striving to achieve greater breakthroughs in the field of high-temperature resistant non-woven fabrics.
Industry insiders say that the launch of Dongguan Liansheng’s high-temperature resistant polyester spunbond hot rolled fabric not only solves the pain points of non-woven fabric application in high-temperature scenarios, but also promotes the transformation of the polyester spunbond non-woven fabric industry towards high-end and functional products, providing new ideas for industry technological innovation. With the continuous release of market demand, this product is expected to become the preferred material for high-temperature applications, helping Dongguan Liansheng seize the opportunity in the non-woven fabric sub market and achieve win-win development between the enterprise and the industry.
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.
Post time: Apr-06-2026