PTFE Nonwoven Fabric

I. Core Features of PTFE Non-woven Fabric: The "King of Weather Resistance" in Extreme Environments

PTFE non-woven fabric, relying on the inherent advantages of PTFE material and the characteristics of spunlace process, forms three core features, breaking through the performance limitations of organic and inorganic fibers in highly corrosive, ultra-high temperature and high-cleanliness scenarios:

1. All-scenario corrosion and temperature resistance: The "unbreakable armor" for harsh media

Corrosion resistance far exceeds that of all materials Unlike aramid (resistant to some acids and alkalis) and basalt (resistant to strong acids and alkalis but afraid of fluorides), PTFE has no reaction with almost all known chemical media (including aqua regia, concentrated nitric acid, hydrofluoric acid, and strong oxidants). After soaking for 100 days, the loss rate of breaking strength is ≤1%. In highly corrosive scenarios such as chemical engineering, electroplating, and pharmaceuticals, its service life can reach over 10 years. It is 5 to 8 times that of traditional corrosion-resistant materials. ​

Wide temperature range stable without attenuation It can operate stably for a long time within the range of -200 ℃ (ultra-low temperature) to 260℃ (high temperature), and can withstand a short-term temperature of up to 300℃. Even after spunlace reinforcement, it still retains the original temperature resistance of the material, solving the problems of organic fibers (such as polyester and polypropylene) being prone to melting at high temperatures and inorganic fibers (such as basalt) being prone to cracking at low temperatures. It is suitable for extreme temperature range scenarios such as extremely cold regions and high-temperature industries.​

2. Non-stick and anti-fouling + low friction: The "Self-cleaning benchmark" in clean scenarios

The non-stick surface property of PTFE is unique: The surface free energy of PTFE is extremely low (only 18mN/m), and it hardly sticks to any substances (including oil stains, resins, and viscous liquids). Stains can be easily wiped off without frequent cleaning, solving the pain point of traditional non-woven fabrics being "easy to stick and difficult to clean". It is especially suitable for scenarios prone to sticking, such as food processing and printing. ​

Low friction coefficient and reduced loss: With a friction coefficient of only 0.04 (dynamic friction coefficient), it is the lowest among known solid materials. The wear rate is extremely low when in contact with other objects. In high-frequency friction scenarios such as conveyor belts and seals, its durability is more than 10 times that of nylon and polyurethane materials, significantly reducing equipment wear costs. ​

3. High Cleanliness + Flexible Processing: The "Adaptation Foundation" for high-end Customization

Intrinsic cleanliness without migration: PTFE material contains no additives (such as plasticizers and stabilizers). Under high-temperature and high-pressure conditions, no harmful substances migrate, and it does not produce dust or fiber shedding by itself. It meets high-end cleanliness requirements such as food contact (FDA certification) and medical sterility (GMP standards), making it the preferred clean material in the semiconductor and pharmaceutical fields. ​

The spunlace process retains flexibility: By using high-pressure water jet flexible entanglement, it avoids the damage to fibers caused by the needling process. The product not only possesses the rigidity of PTFE material but also maintains its soft and foldable characteristics. It can be cut, sewn, and hot-pressed into any shape (such as sealing gaskets and filter bags), solving the limitation of PTFE plates being "hard, brittle and difficult to process", and is suitable for diverse customization needs.

Ii. Main application fields of PTFE non-woven fabric: An irreplaceable solution for high-end scenarios

Based on the above core features, PTFE non-woven fabric has become a "must-have material" in fields such as chemical anti-corrosion, electronic cleanliness, food and medical care, and high-end industry, suitable for core scenarios with high requirements, high risks, and high cleanliness.

1. Chemical engineering and environmental protection fields: The "Anti-corrosion Main force" in highly corrosive scenarios

Strong corrosive liquid filtration: Electroplating waste liquid filter cloth, solvent filter bags for the pharmaceutical industry - In strong corrosive environments such as hydrofluoric acid and concentrated nitric acid, they can efficiently retain impurity particles in the liquid, with a filtration accuracy of 0.1μm, and do not adsorb the components of the filtrate, ensuring product purity. Their service life is more than 20 times that of polypropylene filter bags, significantly reducing the frequency of replacement. ​

Anti-corrosion lining and covering: Chemical reactor lining, storage tank anti-corrosion covering fabric - directly adheres to the inner wall of the equipment or covers the surface of the equipment, blocking the erosion of strong corrosive media on the equipment, and the non-stick property makes it easy to clean the residual materials in the reactor, meeting the needs of "frequent reactions and strong corrosion" in chemical production, and extending the service life of the equipment by 5-8 years. ​

2. Electronics and Semiconductors: The "Protective Core" in High-Cleanliness Scenarios

Semiconductor cleanroom applications: Cleanroom wiping cloths, dust-proof nets for wafer manufacturing - no dust shedding, no material migration, can clean fine impurities on the surface of semiconductor wafers, and is resistant to commonly used solvents in the electronics industry such as isopropyl alcohol and acetone, does not react with chip materials, and meets the Class 10 clean standard of the semiconductor industry. ​

High-temperature insulating components: High-temperature insulating gaskets for electronic components, insulating cloth for lithium battery tabs - stable insulation performance in a 200℃ high-temperature environment (dielectric strength ≥20kV/mm), and resistant to electrolyte corrosion. It can effectively prevent short circuits in electronic components and leakage in lithium batteries, meeting the high-temperature insulation requirements of new energy and high-end electronics.

3. Food and Medical fields: Safe and Clean "guarantee materials"

Food processing scenarios: Food baking conveyor belt lining fabric, chocolate mold anti-stick fabric - The surface does not stick to food raw materials (such as dough, chocolate), no harmful substances are released at high temperatures, complies with FDA food contact certification, can be in direct contact with food, and is easy to clean, reducing bacterial growth caused by food residues, meeting the "safety and efficiency" requirements of the food industry. ​

High-end medical applications: Implantable medical device wrapping cloth, sterile surgical instrument packaging cloth - featuring excellent biocompatibility (non-allergenic and non-irritating), and capable of withstanding 134 ° C high-temperature sterilization (steam sterilization), maintaining structural integrity after sterilization. In high-end medical scenarios such as minimally invasive surgery and organ transplantation, it ensures the sterility and safety of the instruments. ​

4. Industrial and Special Fields: "Performance Support" for High-End Equipment

High-end sealing scenarios: Engine high-temperature sealing gaskets, valve sealing packing - resistant to 260℃ high temperature and corrosion from engine oil and fuel, non-stick property reduces friction loss between sealing parts and equipment, sealing performance is more than three times that of traditional rubber sealing parts, suitable for high-temperature sealing requirements of aero engines and high-end automotive engines. ​

Special protective equipment: The outer layer of chemical protective suits, the fabric of firefighters' chemical protective suits - resistant to the penetration of strong corrosive chemicals (penetration rate < 0.1μg/(cm² · h)), and heat-resistant, non-sticky to toxic liquids, which can protect workers from chemical burns. In special protective scenarios such as chemical leakage and toxic substance handling, it is the "last line of defense" to ensure personnel safety. ​

About Yongdeli: Professional Manufacturer of PTFE non-woven fabric

Changshu Yongdeli Spunlace Nonwoven Fabric Co., Ltd. possesses an integrated production line for PTFE fiber spinning and spunlace, capable of providing customized PTFE nonwoven fabric products with a weight of 50-300g/㎡ and a width of 0.2-3.2m. It supports post-treatment processes such as coating (such as anti-radiation coating) and composite (such as composite reinforcement with glass fiber), and its quality is in line with international high-end standards. ​

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