6 types of processes for making non-woven filter media materials

Filtration is an important part of our daily lives. From coffee filters to air purifiers to water and car filters, many industries and consumers rely on high-quality filter media that can purify the air they breathe, the water they consume, and make their machines and The vehicle works normally. In some cases, filter media can protect personal health and safety, and even save lives. Although we are transitioning from the industrial age to the technological age, the filtration market is still booming and is expected to increase by more than 13 billion US dollars by 2025. In this market, air filtration is expected to grow by 6.6% (to reach $15.4 billion) by 2025. In terms of liquid filtration, this market is expected to grow to nearly $3 billion by 2026. These forecasts are promising for the filtration market, especially for the production of non-woven filter media, providing high-quality products at a lower cost than woven materials. What is non-woven filter media? The filtration of air and water is very important to our health and safety. Filters come in various shapes and sizes, and can be made of woven or non-woven fabrics. Woven fabrics are made by weaving single strands of materials such as monofilaments or fibrillated yarns on a loom. The production process of non-woven fabrics is to first bond fibers together in a sequential or random manner, and then bond The layers of the non-woven fabric are bonded with the polymer to form a porous material suitable for filtration. 6 different methods of producing filter media The method of manufacturing filter media mainly depends on the type of filtration required. There are six main methods, as follows: 1. Carding method The filter medium of a carding machine is traditionally used for masks and filtering edible oil, coolant oil, and milk. Usually resin or thermal bonding is used, and this method is in some cases replaced by other methods described below. 2. Wet method Wet method and wet method filter media are used in swimming pool filters, coffee filters and high-efficiency particulate air filters. Their production process is similar to that of papermaking. On standard papermaking equipment, a mixture of man-made, natural or glass fiber short fibers forms a paper-like medium. 3. Melt blown method Melt blown filter media is ideal for filtering particles, such as dust, asbestos, and smoke. This is a common type of filter in respirators and is easy to mass produce. It is formed without the use of fibers: instead, molten polymer is blown into a microporous mesh. 4. Spunbond method Spunbond filter media is light in weight and can be used for air and liquid filtration. Just like melt-blown media, they do not need to use fibers, but are spun together from nylon, polyester or polypropylene. In addition, they are light weight and heat resistant. 5. Needle punching The manufacture of needle punched filter media is a mechanical process that involves the use of barbed felt needles to locate and interlock the fibers in the spunbond or carded net. The three-dimensional structure of the pinhole filter media is an ideal filter for capturing particles on the surface and inside. This is a commonly used type of filtration to clean, for example, influent and sewage. 6. Composite method Non-woven composite is a process of using different technologies to bond multiple layers of nonwoven materials and polymers into a composite material that combines the properties of each layer. In the process of manufacturing filter media, stratification is ideal for heating, cooling, and ventilating homes, buildings, and automobiles. Advantages of compounding Compared with other methods, the process of compounding filter media has many obvious advantages. After compounding, the material will become: 1. Can withstand the disinfection and cleaning of strong chemicals; 2. Good high temperature stability; 3. Wear resistance and long life; 4. Can be easily made into a variety of porosity, weight and thickness; 5. Waterproof, breathable and soft; 6. Wide range of uses, can be used for any filtration needs; 7. Low production cost. No matter what type of filter media you need, it is important to consider the production cost, ease of manufacturing, and the specific characteristics of the final product. Non-woven fabrics have been proven to be a multifunctional material that can be used to make filter media, and can be used in any occasion and any field in the filtration industry, whether it is filtering water, air, blood, oil or other substances.