Filtering is an important component 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 keep their machines and vehicles functioning properly. In some cases, filter media can protect individual health and safety, and even save lives.
Filter media
The filtration of air and water is crucial for our health and safety. Filters come in various shapes and sizes and can be made of textile or Shandong non-woven fabric.
Woven fabrics are made by weaving single strands of material such as monofilaments or fiberized yarns on a weaving machine, while the production process of non-woven fabrics is to first bond the fibers together in a sequential or random manner, and then bond the layers of Shandong non-woven fabrics with polymers to form a porous material suitable for filtration
6 different methods for producing filter media
The method of manufacturing filter media mainly depends on the type of filtration required. There are six main methods, as follows:
Sorting method
The filtering medium of carding machines has traditionally been used for masks and filtering edible oil, coolant oil, and milk. Usually resin or thermal bonding is used, which is sometimes replaced by other methods described below.
Wet process
Wet and wet filtration media are used for swimming pool filters, coffee filters, and high-efficiency particulate air filters. Their production process is similar to papermaking, where a mixture of artificial, natural, or glass fiber short fibers forms a paper like medium on standard papermaking equipment.
Melt blown method
Meltblown filter media are ideal for filtering particles such as dust, asbestos, and smoke. This is a common type of filter in respirators that is easily mass-produced. It is formed without the use of fibers: instead, melted polymer is blown into a microporous mesh.
Spunbond
Spunbond filter media is lightweight and can be used for air and liquid filtration. Just like melt blown media, they do not require the use of fibers, but are spun together from nylon, polyester, or polypropylene. In addition, they are lightweight and heat-resistant.
Acupuncture method
The manufacturing of needle punched filter media is a mechanical process that involves the use of needle felt needles to locate and interlock fibers in spunbond or combing webs. The three-dimensional structure of pinhole filter media is an ideal filter for capturing particle surfaces and interiors. This is a commonly used type of filtration for cleaning, such as incoming water and wastewater.
Composite method
Non woven composite is the process of using different techniques to bond multiple layers of non-woven materials and polymers into composite materials that combine the properties of each layer. During the manufacturing process of filter media, layering is ideal for heating, cooling, and ventilation in households, buildings, and automobiles.
Compared with other methods, the process of composite generation of filter media has many obvious advantages. After compounding, the material will become:
Capable of withstanding strong chemical disinfection and cleaning;
Good high-temperature stability;
Wear resistant and have a long lifespan;
Can be easily made into various porosity, weight, and thickness;
Waterproof, breathable, and soft;
Widely applicable and can be used for any filtering needs;
Low production cost.
Conclusion
No matter what type of filter media you need, it is important to consider production costs, manufacturing difficulty, and the specific characteristics required for the final product. Non woven fabric has been proven to be a multifunctional material that can be used to manufacture filter media, suitable for any occasion and field in the filtration industry, whether it is filtering water, air, blood, oil, or other substances.
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: Oct-31-2024