SMS composite non-woven fabric consists of three layers: upper layer S cloth (spunbonded cloth), middle layer M cloth (meltblown cloth) and lower layer S cloth (spunbonded cloth). It is a microporous product that can shield bacteria. Floating tire products with fluffy and warm-keeping characteristics; High-efficiency filtering products with gradient filtration can be formed; Medical protective disposable articles that can prevent cross-infection of bacteria and prevent chemicals; It is a geotechnical product, which has anti-explosion and anti-filtration. From the perspective of product structure, nonwovens are mostly three-dimensional structures composed of single fibers, which are different from the two-dimensional structures of traditional textile yarns. Therefore, nonwovens have micropore permeability, excellent surface coverage, dimensional stability and air permeability. SMS composite nonwovens have been widely used in the field of industrial textiles abroad, mainly in the fields of medical care and filtration.
Specifically embodied in: a, surgical gowns and surgical kits; B, operating room curtains; C. surgical instrument cloth (CSR cloth); D, masks (medical and civil); E, high-grade packaging materials and other fields. The most commonly used product specifications are sanitary napkins (12~ 16g/m2), surgical gowns (50 g/m2), work clothes (60 g/m2), masks (45~50 g/m2) and filter materials (many specifications). In fact, as long as the spunbonding method can be applied, SMS composite nonwovens can also be applied completely.
Second, ultra-fine fiber melt-blown nonwovens
Air filter material: PP/PET and other resins are used as the main raw materials and produced by special spinning processing technology. Large dust holding capacity, acid and alkali resistance. From primary effect, middle effect and high school effect to secondary efficiency and high efficiency. According to the use requirements of different air purification occasions, it is made into various fiber structures with different specifications and sizes, including ordinary series and electrostatic series. According to different use requirements, it can produce compact, coarse filtration, microfiltration, ultra-micro filtration, linen, paper filtration, film, wood pulp fiber and other forms.
Liquid filter material: PP/PET and other resins are used as the main raw materials and produced by special spinning processing technology, which is different from microfiltration and coarse filtration. The minimum filtration accuracy can reach 0.5&: micron; m ~ 10 & amp； Microscopic; M, the coarse filtration is 20&; Microscopic; M ~ 60& microscopic; M. Large flux, strong pollution-receiving capacity, acid and alkali resistance, innocuity and long service life, suitable for food, electroplating, sewage treatment, environmental protection industry and other industries.
Warm-keeping material: A new eco-friendly warm-keeping material for human body, which is made of environmentally-friendly materials and developed by special spinning and drafting techniques such as high temperature, high speed and high-frequency micro-fluctuation airflow. It has ultra-fine and three-dimensional fiber network structure. Ultra-fine fiber with a diameter of 2-4 & micro; M, which is only 1/6~ 1/8 of cotton fiber and 1/3 of silk fiber, has good heat insulation performance. In unit volume, the surface area of fiber is several times to more than ten times that of ordinary fiber, and a large number of tiny gaps make it contain a lot of air, with a content of more than 90%, which has a significantly higher barrier effect on heat dissipation than ordinary fiber, thus forming a better thermal insulation effect, and the thermal insulation effect exceeds that of down with the same gram weight. It can also properly adjust the body surface temperature, promote microcirculation, and inhibit skin itching and eczema. Does not use any chemical adhesive, but also mildew and moth-proof, non-toxic and antibacterial.
Dust-proof/mask filter material: ultra-fine fiber filter material produced by advanced technology, used in sanitary masks, protective masks and other occasions.
Oil-absorbing material: independent research and development of unique high-frequency fluctuating air spinning technology and production process, which can absorb oil up to 20 times its own weight. It can absorb petroleum and petroleum-based liquids as well as acid-base liquids, and is suitable for oil depots, docks, ships, marine oil pollution control, environmental protection and other industries. Can be used for many times, and there is no secondary pollution after incineration.
Material of oil-absorbing wiping cloth: made of special superfine fiber spinning process, soft to the touch. At the same time, it has the characteristics of natural lipophilic and alkaline, and has super oil removal and decontamination ability. Especially suitable for making high-grade disposable wet wipes and towels used in hotels, restaurants and entertainment places, with soft texture and no harm to the skin.
Health care material: It is a melt-blown superfine nonwoven material with high purity and high melting point fat PP as raw material, which is highly absorbent, non-toxic and tasteless, and processed by high-frequency airflow drafting technology. This material is non-toxic, harmless and pollution-free, because it does not use any chemical adhesive for fiber bonding. Soft to the touch, natural and fine pore size, and good air permeability. It can reduce cross-infection and inhibit harmful bacteria to some extent when used in medical and health industries. Hydrophilic factor, antibacterial factor, etc. It can be added according to functional requirements, and is suitable for making materials for liquid absorption surgical bags, cotton pads, advanced absorbent facial towels, absorbent cotton, sanitary mattresses, sanitary napkins, diapers, underwear and sweating parts.
Hydrophilic liquid absorption material: made of superfine cotton material, with strong liquid absorption ability and high speed. It can absorb water, alcohol and acid-base chemical liquids, and is an essential material for various petrochemical, laboratory, analysis room and other places.
Three, bag filter materials
Bag filter material is made of various materials by hot melting with imported automatic melting machine, which improves the production process of old filter bags and changes the old filter bags. There is no shunt net in the bag, so the air supply of the filter bag is more uniform, the resistance is smaller and the efficiency is higher. The bag filter is installed faster, and the made filter is flat, beautiful and practical.
Stable performance and washable.
The special non-woven fabric filter adopts incremental structure to filter cotton, which has reasonable structure, small resistance and stable performance, and can be reused after cleaning.
Unique structure and wide use.
The unique structure made of imported technology makes the air outlet surface more uniform, with longer service life and higher efficiency.
The dust holding capacity is 2.5 times of the initial resistance of the filter material, and the air supply temperature is
Widely used in ventilation, air conditioning systems, precision instrument manufacturers, electronics factories, pharmaceutical workshops, spray paint rooms and other places of air purification. It has the characteristics of small resistance, large air volume and large dust holding capacity.
The filter bag produced by Chinese textile filter material using foreign advanced technology fills a blank in the production of filter bag. The unique hot-melt technology is adopted, and the three layers of filter materials are evenly hot-melt bonded. The first layer of coarse fiber filter cotton captures larger dust in the air, while the filter paper with finer fiber captures smaller dust in the air. The outermost layer is a reinforced protective layer. Reasonable three-layer design makes the product have excellent performance. Strong hot melt technology avoids leakage caused by wind pressure, and mesh screen avoids adhesion between bags.
Among them, the reinforced filter bag will change the fiber structure of the coarse fiber filter layer. In the past, all-fiber filter cotton was made of fibers with a certain degree of curvature, while the fiber of reinforced filter bag was a three-dimensional spiral structure made by special technology. Because of its small elasticity after being subjected to wind pressure, the wind resistance caused by severe compression deformation was greatly reduced. The wind resistance of the reinforced filter bag is 30% lower than that of the original filter bag. Spiral fiber has good resilience and conductivity to air flow, which makes the air outlet of filter bag more uniform and has greater resistance.
Main technical parameters
Specification and model filtration speed
M/s Color Counting Efficiency (%) Resistance Dust Capacity
G/m2 single-sided specific gravity
G/m2
0.5μm 1μm 2μm
ZFCD-45 0.4 White 60 72 40 170 150
ZFZD-65 0.3 Green 35 85 90 50 150 155
ZFZD-85 0. 15 Pink 42 90 95 55 120 165
ZFCD-95 0. 1 light yellow 9095100651kloc-0/0210.
ZFCD-95B 0. 1 light yellow 9298100701010130.
Comparison between traditional filter bag and screen filter bag
When the traditional filter bag inflates, the air outlet area is greatly reduced due to the mutual extrusion and joint between the bags, and the air outlet can only be output at the bottom of the bag and the non-joint surface. If the set air output is maintained, the wind speed in the air outlet area will increase, reducing the filtration efficiency of the filter bag, and dust can only be deposited locally in the bag, increasing the local load of the filter bag, thus reducing the service life of the filter bag and increasing the replacement frequency.
Imported foreign advanced equipment, automatic welding machine, hot-melt PP mesh bag. Due to the tension of the screen, there will be no extrusion between bags, so that the air supply can be extruded evenly, and the air outlet surface is increased by 40% on the basis of the traditional filter bag. Due to the uniform air outlet, the wind speed of the traditional filter bag due to local extrusion will be reduced and the filtration efficiency of the traditional filter bag will be improved. Because there is no local dust accumulation, the service life of the filter bag will be greatly prolonged and the replacement frequency of the filter bag will be reduced.
Comparison between metal wire filter bag and polypropylene mesh filter bag
Although the separated filter bags solve the phenomenon of mutual extrusion and adhesion between filter bags through hook lines, due to the resistance and compression of the filter bags, eddy currents are easily formed in the filter bags, thus increasing the wind resistance. The filter bag with PP filter screen further refines the air supply area, greatly reduces the space for vortex formation, reduces the wind resistance caused by vortex, and makes the air outlet smoother and less resistant. The mesh filter bag produced by automatic fusion bonding technology is stronger and more beautiful than the hook filter bag.