Needle punched non-woven fabric is thicker, better and how to choose

The increase in the thickness of the non-woven fabric means that the weight per unit area will increase and the strength will also increase. However, due to the structure, the increase in thickness does not mean the increase in the barrier properties of microorganisms. For example, when a thick non-woven fabric is used, the increase in the weight of the spunbond layer cannot effectively increase its anti-bacterial performance. Only when the pore size of the key filter layer (ie the melt blown layer) can effectively filter the invasion of microorganisms and dust, its resistance Bacterial performance meets the requirements. As the thickness increases, the air permeability of the packaging material will also be affected, and the probability of wet packs will increase. Because it is a fabric that does not need to be spun and weaves, it just aligns or randomly arranges short textile fibers or filaments to form a web structure, which is then reinforced by mechanical, thermal bonding or chemical methods. To put it simply, it is not interwoven and braided one by one, but the fibers are directly bonded together through physical methods. Therefore, when you get the sticky scale in your clothes, You will find that it is impossible to draw out the thread ends. Non-woven fabric breaks through the traditional textile principle, and has the characteristics of short process flow, fast production speed, high output, low cost, wide use, and multiple sources of raw materials. In clinical use, the non-woven fabric will be damaged after sterilization. For this type of damage, the main reason is that the microscopic fine plastic fibers will shrink to a certain extent after the non-woven fabric is sterilized at high temperature. The performance is after sterilization in use. The non-woven fabric is more brittle than before sterilization, so applying too much force or unreasonable picking and placing method to it during use will cause destructive damage to the packaging material. In addition, use burrs and sharper instruments on the edges. It will also cause damage to the non-woven fabric. Under this circumstance, it is recommended that the clinic should pack it properly, handle it gently, and use the double-layer packaging recommended by the specification, which will greatly reduce the probability of damage. If the problem of damage is solved only by increasing the thickness of the non-woven fabric, in addition to ensuring the anti-bacterial performance, it is also necessary to closely observe the probability of wet packs. In short, when selecting non-woven fabrics, the thicker the better, the wet-packing phenomenon of materials with good air permeability will be reduced under the premise of ensuring the antibacterial performance and tensile strength. The material and processing procedure of the needle punched non-woven fabric is made of polyester and polypropylene raw materials, which are carded, pre-carded, combed, pre-needled, and main needled. The center is interlayered with mesh cloth, and then through double nucleation, air-laid needles are combined into a cloth. The dust filter cloth has a three-dimensional structure. After heat setting and singeing, the surface is most treated with chemical oil to make the surface of the filter cloth smooth , The micropores are evenly distributed, the product density is good from the surface, and the surface is smooth and air-permeable. The filter on the plate and frame compressor proves that high-pressure air can be used, and the filtering accuracy is up to 4 microns. Polypropylene can be provided according to user needs And polyester two kinds of raw materials. Practice has proved that non-woven filter cloth performs better in plate and frame filter press: for example, slime treatment in coal preparation plants, mineral extraction in beneficiaries, wastewater treatment in steel plants, wastewater treatment in breweries, printing and dyeing plants. Other specifications of milk carbuncle will have the problem that the filter cake is not dry and difficult to fall off. After using the non-woven filter cloth, the filter cake is quite dry when the filter press reaches 10kg-12kg, and the filter cake will automatically be automatically opened when the filter is opened. Fall off. When users choose non-woven fabrics, they mainly consider non-woven filter fabrics of different thickness and quality according to the air permeability, precision and elongation. The product parameters are introduced in the polyester needled felt and polypropylene needled felt. The specifications and varieties are all available. Formulate. The needle-punched non-woven fabric series product room is formed by fine carding, multiple precision needle punching or proper hot-rolling treatment. Based on the introduction of multiple high-precision needle punching production lines at home and abroad, high-quality fibers are selected and passed through different production processes. With the combination of different materials, hundreds of different products are currently circulating on the market, including: geotextiles, geomembranes, needle felts, non-woven fabrics, MTS, flumes, acrylic, coated needles Needle felt, anti-static needle felt, sandwich non-woven fabric.