The increase in the thickness of the non-woven fabric means that the weight per unit area increases, and the strength also increases, but due to the structure, the increase of the thickness does not mean that the barrier properties of microorganisms increase.

For example, when a thickened non-woven fabric is used, the increase in the weight of the spunbond layer cannot effectively increase its antibacterial performance. Only when the pore size of the key filter layer (ie, the meltblown layer) can effectively filter the invasion of microorganisms and dust, its resistance Bacterial properties meet the requirements. As the thickness increases, the air permeability of the packaging material will also be affected, and the probability of wet packs will also increase.



Because it is a kind of fabric that does not need spinning and weaving, it just orientates or randomly spun short fibers or filaments to form a web structure, which is then reinforced by mechanical, thermal bonding or chemical methods. Simply put, it is not interwoven and braided by yarns one by one, but the fibers are directly bonded together by physical methods, so when you get the sticky scale in your clothes, You will find that it is impossible to extract a single thread. Nonwovens break through the traditional textile principle, and have the characteristics of short process flow, fast production speed, high output, low cost, wide application, and many sources of raw materials.

In clinical use, the non-woven fabric will be damaged after sterilization. For this kind of damage, it is mainly because the micro-fine plastic fibers of the non-woven fabric will shrink to a certain extent after high temperature sterilization, which is manifested in the use of sterilization. The non-woven fabric is more brittle than before sterilization, so applying too much force or unreasonable handling methods during use will cause destructive damage to the packaging material. In addition, the use of burrs on the edges and sharper instruments It will also cause damage to the non-woven fabric. In this case, it is recommended that the clinical package should be tightly packed and handled with care, and use the double-layer packaging recommended by the standard, which will greatly reduce the probability of damage. If the problem of breakage is only solved by increasing the thickness of the non-woven fabric, in addition to ensuring the antibacterial performance, it is also necessary to closely observe the probability of wet packs.
In short, the thicker the non-woven fabric is, the better. On the premise of ensuring the antibacterial performance and tensile strength, the wet-packing phenomenon of the material with good air permeability will be reduced.