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Huamaotek Nonwoven Co., Ltd

Huamaotek Nonwoven Co., Ltd

 [Guangdong,China]

Business Type:Manufacturer

Main Markets: Africa , Asia , East Europe , Worldwide

Exporter:91% - 100%

Certs:ISO/TS16949, MSDS, REACH, RoHS, Test Report, ISO14001, ISO9001

Description:Non Woven Fabric manufacturer / supplier, offering Air Filter Material,Activated Carbon Cloth, etc.

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  • 2022-09-30 What Raw Materials Are Needed To Process Non Woven Fabric? What raw materials are needed to process non woven fabric? The quality of non woven fabric raw material has an important impact on the quality of nonwoven fabric. Therefore, when producing and processing nonwoven fabric roll, it is necessary to strictly control the quality of raw materials to avoid the use of inferior raw materials in the nonwoven fabric processing process. Non woven filter fabric mostly uses polypropylene pellets as raw materials. It is produced by continuous one - step method of high temperature melting, spinning, laying, and hot pressing and coiling. The top three fibers used in nonwoven production are polypropylene ( 62 % of the total ), polyester ( 24 % of the total ) and viscose ( 8 % of the total ). Between 1970 and 1985, viscose fiber was the most used in the production of nonwoven fabric. However, in the past five years, in the field of sanitary absorbent materials and medical textiles, the application of polypropylene fibers and polyester fibers has begun to dominate. Needle punched non woven fabrics are fibrous materials that can be produced by mixing a variety of fibers. Our commonly used raw materials are polyester fiber, viscose fiber, polypropylene fiber and so on. Spunlace cloth is generally mixed with polyester fiber and viscose fiber. Spunbond non woven fabrics mostly use polypropylene ( pp material ) pellets as raw materials. Meltblown nonwoven fabric mainly uses polypropylene as the main raw material.
  • 2022-09-29 Quality Inspection Requirements For Nonwoven Fabric The main purpose of quality inspection of non woven fabric products is to strengthen product quality management, improve the quality level of nonwoven fabric products, and avoid non woven fabric roll products with quality problems from entering the market. The survival of the fittest in market competition and the quality inspection of non woven fabric products can promote enterprises to improve the processing quality of nonwoven fabric products and enhance the market competitiveness of nonwoven fabric manufacturers. Quality inspection requirements for non woven filter fabric products: 1. The stretchability and wear resistance of the filter cloth 2. The color fastness of the filter fabric after rubbing and the color fastness after washing 3. Antistatic and flammability of filter cloth fabric 4. Moisture regain, air permeability, moisture permeability, oil content and fabric purity Main testing items of non woven fabric: 1. Color fastness test: color fastness to washing, color fastness to rubbing ( dry, wet ), color fastness to water, color fastness to saliva, color fastness to light, color fastness to dry cleaning, color fastness to perspiration , color fastness to dry heat, color fastness to heat pressing, color fastness to chlorine water, color fastness to scrubbing, color fastness to chlorine bleaching 2. Physical property testing: tensile breaking strength, tear strength, seam slippage, seam strength, burst strength, anti - pilling resistance, abrasion resistance, fabric density, weigh
  • 2022-09-28 What Are The Common Quality Problems Of Nonwoven Fabric? What are the common quality problems of non woven fabric? In the process of non-woven fabric processing, if the quality control is not strict, it is easy to have some quality problems such as insufficient gram weight and uneven thickness. In recent years, the price of non woven fabric raw material has continued to rise. It directly leads to the increase in the processing cost of nonwoven fabric enterprises. The increase in enterprise costs also greatly affects the product quality of non woven filter fabric! What are the common non woven filter cloth quality problems? Quality management is an important part of the production and processing links of non woven fabric roll enterprises, and its important role is well known. However, in the actual production process, the quality of filter fabric non woven products is often difficult to control, resulting in various quality problems of nonwoven fabric. 1. Cut corners: For example, if the customer orders 80g per square meter of filter fabric, these small businesses will use 70g per square meter of fabric in order to reduce costs. If the customer is not professional enough and does not have special equipment for testing, it is generally impossible to find it. Weight is a direct method, and it is also one of the more used methods, which can effectively reduce costs. 2. Insufficient gram weight: The gram weight of the no woven fabric can directly affect the weight of the customer's product. In the process of laying the net, the layers are uneven and cannot be accurately connected at the two ends. 3. Uneven thickness: The uneven thickness of non woven fabric is also caused by the uneven distributio
  • 2022-09-21 Test Method For Anti-aging And Anti-aging Property Of Nonwoven Fabric During the use and storage of nonwoven fabric, due to the influence of various external factors, some properties will gradually deteriorate, such as deterioration, hardening, stickiness, loss of luster, etc., and even reduce the strength and rupture. This leads to loss of use value, a phenomenon known as aging of non woven fabric. Due to the different uses of environments of non woven fabric roll, the requirements for aging performance are also different. The test of aging resistance is to use the artificially created natural environment to measure or observe the changes in the properties of non woven filter fabric. However, many changes are difficult to quantify. Generally, the changes in strength before and after the test change are used to judge the good and the bad of the aging resistance in filter cloth material. In the test of aging resistance, various factors cannot be considered at the same time. However, only the role of a certain factor can be highlighted and other secondary factors are excluded, thus forming many methods for testing aging resistance.
  • 2022-09-20 Advantages Of Nonwoven Fabric 1. Light weight: Polypropylene resin is used as the main raw material, which is fluffy and feels good. 2. Irritant: The nonwoven filter cloth material is produced with raw materials and has stable performance. 3. Polypropylene is a chemically inert substance and is not moth - eaten. And it can isolate the erosion of insects in the liquid, and the strength of the finished product will not be affected by erosion. 4. The non woven fabric has good physical properties. Non woven fabric roll is made of polypropylene spinning directly spread into a mesh and thermally bonded. The strength of the product is better than that of the general staple fiber product. The strength is non - directional, and the vertical and horizontal strengths are similar. 5. The raw material of most nonwoven fabric used is polypropylene, while the raw material of plastic bags is polyethylene. Although the two substances have similar names, they are quite different in chemical structure.
  • 2022-09-19 Application Of Nonwoven Fabrics For Filter Materials In Automobiles In the nonwoven fabric industry, there are many kinds of non woven fabric rolls that we often see. Non woven fabric for filter materials is a commonly used one. Non woven filter fabric is characterized by good filterability and strong absorption. It is used in different occasions. Today we will focus on the application of non woven fabrics for filter materials in automobiles. There are many places in the car that need filter materials, such as carburetor air filtration, air conditioning circulation filtration, cabin air purification, crankcase ventilation valve filtration, engine oil filtration, transmission oil filtration, auxiliary water filtration, etc. Currently, many of the media developed and applied for the above - mentioned filtration purposes are non woven fabric or composite non woven fabric. For example, the circulating filtration system of the air conditioning system uses electret melt blown nonwoven and active discharge composites. Carburetor air filter materials are dry - laid from chemically bonded nonwovens or needle punched / spunbond fabric composites. The transmission oil filter adopts needle punched non woven, etc.
  • 2022-09-14 Non Woven Fabric Wallcover Nonwoven fabric wallpaper products are called " breathing wallpaper " in the industry. It is a new type of green environmental protection material that is very popular in the world. At present, there are many kinds of wallpaper on the market, such as pure paper wallpaper, polyvinyl chloride ( PVC ) glue surface wallpaper, metal wallpaper and liquid wallpaper. Among them, non woven fabric wallcover, as a new type of green environmental protection wallpaper, is gradually popular in domestic and foreign decoration markets. Compared with traditional wallpaper, non woven felt wallcover is environmentally friendly. Compared with commonly used PVC wallpaper, it generally does not volatilize toxic and harmful substances, harming human body and environmental pollution. It has good air permeability. The three - dimensional pore structure of the non woven felt fabric wallcover determines its good air permeability and can discharge the moisture in the wall in time. The mechanical properties of nonwoven wallpaper are good, and the general strength of paper - based wallpaper cannot be compared with that of fabric wallpaper. It is easy to do and has excellent antifouling performance. Fabric wallcover can be wiped with a damp cloth, which has natural advantages in peeling and is easy to replace. Removing the wallpaper will not cause damage to the walls. Sound a
  • 2022-09-13 Automotive Non Woven Fabric In recent years, nonwoven fabric has been widely used in the automotive industry. Today, more than 40 parts of automobiles are made of non woven fabric, such as trunk liners, carpets and fuel filters. The performance of non woven fabric roll can reach the good performance and safety of auto parts. It can reduce the weight of the car, improve the comfort of the car, and highlight the beauty of the car. Advanced technology can greatly improve the car 's heat insulation, combustion, waterproof, extreme temperature resistance, and anti - wear effects. The use of nonwoven fabric in automobiles continues to expand, as it is easier to install non woven fabric parts in automotive assemblies than conventional parts. It can be customized according to the application function. Such as thermoforming, embossing, coating and printing can be used in the production process. Taken together, they can make cars safer, more attractive, more durable, more cost - effective and more sustainable. The versatility and many advantages of filter cloth fabric are widely recognized by aircraft, trains, ships, spacecraft and satellites.
  • 2022-09-09 Introduction To The Production Process Of Needle Punched Nonwoven Needle punched non woven fabric is widely used in automotive interiors, environmental protection materials, civil engineering materials, clothing and bedding and other fields. Needle punched non woven can also be used for back glue, dusting, singeing, calendering, film coating, flame retardant, waterproof, and special finishing such as oil - proof, cutting and compounding. Low - gram weight needle punched non woven fabric is mainly used in automotive interiors such as car engine rooms, trunks, coat racks, sunroof sunshades, bottom guards, seat linings, etc., as well as clothing linings, bedding beds mats, sanitary materials, greening and other fields. Approximate process flow: raw material - opening machine - cotton feeder - carding machine - laying machine - needling machine - ironing machine - winder - finished product 1. Weighing and feeding This process is the first process of needle punched non woven fabric. According to the prescribed proportions of various fibers, such as black A 3D - 40 %, black B 6D - 40 %, white A 3D 20 %, weigh them according to the proportions. Feeding and recording to ensure the stability of product quality. If
  • 2022-09-08 Early Nonwoven Fabric Production Process - Impregnation Method Impregnation method is one of the earliest production methods of nonwoven fabric materials, and most of the early non woven fabric products are produced by this method. At present, some low - grade and low - priced products are still produced by this method, such as various finger cloths in disposable materials, bag lining adhesive village base cloth, packaging materials, agricultural insulation materials, etc. With the continuous improvement of the production process of the impregnation method and the advent of new varieties such as adhesives and various auxiliaries, the impregnation method non woven fabric roll products have broadened the application field. For example, the wiping cloth with viscose fiber or cotton as raw material uses acrylate, vinyl acetate and its copolymer as binder, and its weight is about 4 gm; agricultural insulation materials mostly use lighter weight, about 30 g / m2. It is used to cover the surface of farmland after the seeds are sown to reduce the temperature difference at night and resist the attack of sudden cooling weather on the seed buds. This product has good air permeability and moderate strength. It can be reused and the cost is low.
  • 2022-09-07 Explain The Application Conditions Of Non Woven Geotextiles In Detail Non woven geotextiles are widely used in industry, but many friends may think it is an ordinary fabric when they hear the name of geotextiles. In fact, although it is indeed a fabric, it is not a fabric for clothes, it is an industrial fabric with strong toughness and high strength, and it can adapt to harsh use environments, both dry and wet. Geotextile fabric can be used in both states, so this material is widely used now. When paving roads, people will lay this material under the roadbed, and when building a house, it will also be installed in the wall. Whether it is paving roads or building houses, industrial fabrics such as nonwoven geotextiles are indispensable. Nowadays, many building materials are used in the process, and the scope of use will be limited by their own state. Many metal materials must be kept dry during use. It can prevent decay, but this industrial fabric has advantages that other metal materials do not have. Even if it is soaked in water or used in the river for a long time, this material will not rot or crack, and its strength is very high. Geotextile fabric non woven can be used normally in both dry and wet conditions. Ordinary fabrics will get wet when they get wet. If the fabrics are exposed to the outside for a long time and experience wind, sun and rain, then these fabrics will become unrecognizable. But the industrial fabrics such as non woven geotextiles are completely different. It is used in two states, people can soak it, use it, and place it in the river for use. If the cloth is dry, it c
  • 2022-09-06 Introduction Of Specific Uses Of Decorative Nonwoven Fabric For Automobiles The rapid development of the automobile industry has led to a sharp increase in the amount of textiles used in automobiles. Non woven fabric technology continues to meet the various needs of the huge automobile market, and its application has been growing. Automotive non woven materials mainly include automotive carpet base fabrics, automotive decorative carpets, roof fabrics, door panels and seat pads, trunk linings, and automotive filter cloth materials. 1. Car Carpet Car carpet should not only increase the luxury and comfort of the car, but also have the properties of sound insulation, moisture resistance, shock absorption, stain resistance, good color fastness, mildew resistance, fluff not easy to fall off, flame retardant and other properties. At present, there are mainly two types of car interior carpets: tufted carpets and needle - punched carpets. Low - grade carpets are mostly of polypropylene staple fiber needle - punched and then dipped ( semi - impregnated or fully - impregnated ) type; medium and high - grade automobiles are mostly tufted or needle - punched velvet carpets, and the base fabric of velvet carpets is mostly spunbond. 2. Roof Car interior veneers and roof fabrics used
  • 2022-09-05 Needle Punched Non Woven Needle punched non woven fabric is directly needle punched fiber non woven fabric without passing through textiles. Needle punched non woven is mainly used in clothing, interior decoration wall coverings, toys, furniture, filtering equipment, sound - absorbing speakers and other fields. Needle punched nonwoven has the characteristics of heat insulation, sound insulation, sound insulation, mildew resistance, flame retardant and so on. , which not only improves its use value, but also is deeply loved by people. Needle punched non woven fabric is made of environmentally friendly polyester fiber raw material and is made by acupuncture technology, which does not produce any toxic gas. It is mainly used in garment production. With the emergence of new products, it has the functions of flame retardant, sound - absorbing, anti - corrosion, mildew - proof and anti - static. Needle punched non woven is precisely because of its high density, thin thickness and good texture. Needle punched nonwoven factory products can be flexibly customized.
  • 2022-09-02 The Role Of Nonwovens For Construction Is Growing Non woven fabric remains unchanged in the construction and construction market. Although they are not usually seen, nonwoven fabric plays an important role in new construction and renovation of existing buildings and homes - they are part of many areas such as house wrapping, roofing materials, window flashing, thermal and acoustic insulation, and many others. Manufacturers of non woven fabric roll and composites are optimistic about the future of nonwoven fabric in this market. Polyester non woven fabric is the most commonly used carrier because it combines good mechanical strength with high elongation. The flexibility of polyester and the stability of glass combine to give nonwovens excellent handling properties. Composites are reshaping the construction market, transforming the use of standard materials into high - performance products and systems through fiberglass reinforcements and specialty nonwovens. We expect this trend to continue. Nonwovens are laminated on the back of waterproofing membranes for flat roofs, industrial or commercial buildings. The nonwoven fabric ACTS acts as a protective membrane, and ACTS acts as a barrier between the roof and the membrane. In addition, the filter cloth material imparts tensile strength and elongation to the film.
  • 2022-09-01 What Are The Wide Applications Of Polyester Needle Punched Non Woven Fabric In Agriculture Needle punched cotton can also be called polyester needle punched non woven fabric. The product has the characteristics of environmental protection, light weight, flame retardant, moisture absorption, breathability, soft touch, durable and good thermal insulation. Today I would like to tell you about six types of polyester needle punched nonwoven used in agriculture: 1. Transplantation and false planting of garden trees: Before planting large trees and small seedlings, they can be spread on the treetop polyester needle punched non woven, then planted, and then sprinkled on the nutrient soil. Using this method to plant garden trees has a high survival rate, Water retention and fertilizer. 2. Cover the greenhouse in winter, raise seedlings in the open field, and float: It can prevent wind blowing and increase the temperature. One side of the seedbed is compacted with needled cotton and the other with brick and soil. It can also be used to make small vaulted sheds with bamboo or thick wire. Cover it with needle punched nonwoven and compact brick or soil around it for insulation. The shade of vegetables and flowers requires more sunlight. Do it in the morning, do it in the evening. Covered vegetables can be put on the market 5 - 7 days in advance, increasing yields by about 15 %. 3. Make the ceiling: In greenhouses and greenhouses, use polyester needle punched nonwoven as the ceiling. The ceiling is separated from the plastic greenhou
  • 2022-08-31 What Is Nonwoven Fabric? What Are The Characteristics? Now there is a kind of nonwoven fabric wallpaper on the market, which is also a kind of modern home wallpaper. Because it uses natural plant fibers after nonwoven processing skills to form non woven fabric wallpaper directly, which can be more environmentally friendly and healthier, and the stretching force is stronger. The biggest feature of non woven fabric roll is that they have long durability and better air permeability than ordinary wallpapers. So what are the characteristics of non woven fabric wallpapers and how to choose them? What are the characteristics of nonwoven fabric and what are the identification skills of non woven fabric? Nonwoven fabric wallpaper characteristics 1. Good environmental performance: Nonwoven fabric wallpaper is made of natural raw materials such as fiber or silk. No PVC or chlorine elements, no formaldehyde gas during installation, the air pollution will be low. 2. Good air permeability: At present, the air permeability of nonwoven fabric is the best. It can improve the humidity of the wall and the air anytime and anywhere. It will not cause the wallpaper to become moldy and yellow, and the wallpaper glue will fail and the wallpaper will fall off. 3. Long life: The wallpaper sticker is very strong. It is difficult for non - professionals to tear it off, and the use time is long. 4. Good ductility: Its shrinkage force is small and its texture is light. The wallpaper is naturally attached to the wall, and the seamless connection looks like a whole.
  • 2022-08-30 The Effect Of Geotextile In Hydraulic Engineering The application of non woven geotextile is very extensive, and geotextile non woven fabric can be seen in various projects. 1. Prevent soil and water from being lost The loss of soil and water will affect the land environment and its use, and it is also one of the causes of water pollution. Therefore, in order to reduce and prevent the loss of soil and water, the use of geotextiles is also an indispensable technical project. It is said that non woven geotextiles are a technology developed for a kind of protection provided by soil and water loss, which can cope with unfortunate environments. 2. Adhere to the balance of water and soil Non woven geotextile has the functions of barrier, drainage, reinforcement, filtration, anti - seepage and anti - corrosion. The nonwoven geotextiles can use its own structure to form a drainage layer, collect the moisture in the soil in the geotextile, and then slowly drain it along the surface of the geotextile. And the non woven geotextile also has excellent water permeability and filtration functions. The water in the soil is discharged through the apertures in the geotextile fabric, which can prevent the loss of soil and water particles, thus preventing the formation of voids and maintaining the balance of water and soil.
  • 2022-08-29 What Are The FactorsThat Affect The Needling Force In The Needle Punched Non Woven Process? Needle punched non woven fabric is a kind of non woven fabric. They are made of polyester, polyester and polypropylene raw materials, and are made by multiple needle punches and appropriate heat - pressing treatment. According to different processes, with different materials, tens of thousands of products are made. Needle punched non woven is used in all walks of life, and various specifications can be customized according to different purposes. Needling force is the resistance that the needle receives when piercing the fiber web during the needling process. It is a dynamic generated by the contact and friction between the fiber being held and the surrounding fibers still in the fiber web when the needle is holding a part of the fiber web. The change process of the needle can indirectly reflect the transfer effect and damage degree of the needle to the fiber during the acupuncture process. Through the test of the ballast force, the rationality of the process parameters such as the frequency of acupuncture, the depth of acupuncture and the density of acupuncture can be further studied. The dynamic curve of the needling force of the needle can be measured by installing a load cell on the needling machine ( Figure 4 - 37 ). When the needles start to penetrate the web, the web is not yet tight, and the needling force increases slowly. When the needles go deeper, the number of barbs entering the fiber web increases gradually, and the frictional resistance increases when the barbs hold the fibers to pierce th
  • 2022-08-26 Elaborate On The Key Factors Affecting The Price Of Nonwoven Fabric The factors that affect the price of nonwoven fabric are generally as follows: 1. The price of crude oil in the raw material/oil market Since the non woven fabric roll is a chemical product, its raw material is polypropylene. And polypropylene is also made from propylene, a crude oil refinery. Therefore, changes in the price of propylene will directly affect the price of nonwoven fabric. The raw materials are also divided into genuine, secondary, imported and domestic. 2. Manufacturer's equipment and technical input The quality of imported equipment is different from that of domestic equipment, or the same raw materials are produced due to different production technologies, resulting in different tensile strength, surface treatment technology, uniformity and feel of non woven fabric, which will also affect the price of non-woven fabrics. 3. Quantity The higher the quantity, the lower the purchasing cost and the lower the production cost. 4. Factory inventory capacity Some large factories will stock up a large number of spot or whole cabinets of imported raw materials when the price of materials is low, saving a lot of production costs. 5. The influence of production area In some areas, the price of non woven filter fabric is relatively high due to factors such as shipping costs, maintenance costs, and storage costs. 6. International policy or exchange rate impact Political influences such as national
  • 2022-08-25 Geotextile Can Improve The Bearing Capacity Of Soil Foundations? Geotextile is a new type of building material. The raw material is polyester, polyester, polypropylene and other polymer synthetic fibers. Generally speaking, it has the outstanding advantages of high strength, anti - aging, acid and alkali resistance, good flexibility, convenient construction, low investment and high efficiency. At present, the most commonly used non woven geotextiles in engineering are polyester staple fiber geotextiles and polyester filament geotextiles. So what is the role of these two nonwoven geotextiles in engineering? Nonwoven Geotextiles For the first separation, geotextile fabric non woven can effectively prevent the mixing of soil and materials, thereby avoiding mixing of different materials or soil erosion and thus protecting soft soil foundations. Secondly, the geotextile non woven fabric can make the water flow freely and without pressure, but it can prevent the loss of fine soil particles, thus avoiding the instability and erosion of some projects. Laying a geotextile filter layer between the embankment and the protective masonry can prevent soil erosion and river bank collapse. The third reinforcement effect: Non woven geotextile can spread the vehicle load over a larger area and reduce the load pressure on the foundation. Under the load, the soft soil foundation will deform. Due to the certain toughness and ductility of the geotextile, the no
  • 2022-08-24 Spray Booth Filter Cotton As people pay more and more attention to environmental protection, the emission problem of the indispensable coating process in the manufacturing industry has attracted more and more attention. Now the working environment of painting has been greatly improved, and most of them have added spray booths for painting. At present, there are mainly two bottom structures to deal with the exhaust gas in the exhaust air of the spray booth, one is laying filter bottom cotton ( dry method ), the other is water cyclone or water curtain ( wet method ), and subsequent adsorption by activated carbon is required. Incineration and other treatment can be discharged into the atmosphere. It may be due to the relatively low cost of dry spray booths and no need for waste water treatment. Except for some automobile manufacturers and large and medium - sized enterprises that use wet spray booths, small - scale painting by small and medium - sized enterprises and 4S shops that can be seen everywhere mostly uses dry spray booths. Therefore, the amount of botton filter cotton on the market is relatively large, and the research on reducing its amount has good economic and environmental benefits. The function of filter bottom cotton: There are three types of filter fabric for dry spray booths: one is the initial effect air inlet filter cotton ( non woven fabric ), which is used for coarse filtration at the air inlet of the spray booth; the second is filter top cotton ( such as 600 G, 560 G ). The air is finely filtered at the top of the spray booth, and the filtration grade is F - 5. There are 3 sta
  • 2022-08-23 Types Of Air Filter Materials Microporous membrane air filtration materials microporous membranes obtained by the phase inversion method or the biaxial stretching method are also used in the field of air filtration. The basic principle of the phase inversion method is to make the homogeneous polymer solution undergo mass transfer between solvent and non - solvent in the environment to form a polymer and solvent enriched phase, and then the polymer solidifies to form a film. In the phase inversion film formation, the common means to promote the phase separation of the solution can be solvent induced or thermally induced. The biaxial stretching method was invented by DuPont. When the processing temperature is between the glass transition temperature and the melting point of the polymer, micropores can be generated by biaxially stretching the polymer thick sheet in the transverse and longitudinal directions, and the tensile load is maintained. Under cooling, the shape of the micropores can be fixed. Among the biaxially oriented films that have been marketed, polytetrafluoroethylene ( PTFE ) films account for the vast majority. Compared with traditional knitted and woven materials, nonwoven fiber air filter material is isotropic in two - dimensional direction, that is, the fibers are randomly oriented in the plane. Its interior has abundant tortuous three - dimensional space. The channel not only provides a flow path for the airflow, but also increases the proba
  • 2022-08-22 Spunbond And Meltblown Processes Spunbond Process Spunbond non woven fabrics continue the synthetic fiber filament spinning process to a certain extent, which combines the spinning technology of synthetic fibers with the nonwoven fabric forming and consolidation technology. The dried polymer is melted and pressurized by a screw extruder and then ejected from a spinneret assembly to form filaments of a certain fineness. After air cooling, a fiber web is formed on the web - forming curtain, and the fiber web is reinforced to bond the fibers into a nonwoven fabric with certain mechanical properties. Spunbond nonwovens can be used to increase the overall mechanical properties of the material and increase the service life of the material. But on the other hand, due to the problem of process conditions, the fineness of the filament cannot be very small, which makes the spunbond nonwoven fabric unsuitable as a filter material alone. Meltblown process The melt blowing method is mainly that after the screw extruder melts the polymer, then the high temperature airflow with a certain speed is used to make the melt stream stretched to form ultra - fine fibers, which are collected on the web forming curtain or web forming drum. A processing technology that forms a web of fibers and then self - bonds into a non woven f
  • 2022-08-19 Several Main Filtration Properties Of Filter Media Filtration efficiency, filtration resistance and dust capacity are three important parameters to evaluate the filtration performance of air filter media. Filtration efficiency is the primary basis for the classification of filter fabric non woven products, which determines whether the air can meet the purification requirements; filtration resistance and dust capacity are important indicators to distinguish filter cloth product quality. The lower the filtration resistance, the smaller the intake load during air filtration and the lower the operating cost; if the dust holding capacity of the filter material is high, the service life of the filter is generally higher. Filtration efficiency refers to the percentage of particles captured by a filter material under specified test conditions. By substituting the mass or quantity of particulate pollutants, the weight counting efficiency and counting efficiency of the filter material are obtained, respectively. For the same filtration process, the values of count efficiency and weight efficiency can sometimes vary greatly. When actually comparing filter efficiency values, we need to compare the efficiency to the same definition. At present, the counting efficiency is used in the theoretical research of fiber air filtration. However, in its application and testing, the filter material adopts the counting efficiency, the coarse filter material adopts the weight counting efficiency, and the medium efficiency filter material needs to comprehensively consider the weight efficiency and the weight efficiency.

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