The increase of the thickness of the nonwovens means the increase of the weight per unit area and the corresponding strength. However, due to its own structural characteristics, the increase of the thickness does not mean the improvement of the barrier performance. Microorganisms increased. For example, if a thickened nonwovens is used, the weight of its spunbond layer cannot effectively improve its bacterial resistance. Only when the pore size of the key filter layer (i.e. melt spray layer) can effectively filter the invasion of microorganisms and dust, can the bacterial resistance meet the requirements. With the increase of thickness, the permeability of packaging materials will be affected, and the probability of wet packaging will increase.
In clinical use of non woven cloth sterilization, there will be damage. For this damage, the main reason is that the micro fine plastic fiber after high temperature sterilization of non-woven fabric will shrink to some extent, and the performance of non-woven fabric will be brittle more easily than before sterilization. Therefore, too many or unreasonable methods of taking it in the process of use will cause destructive damage to the packaging materials, Except for use, burr and sharp instruments on the edge can cause the non-woven fabric to break. In this case, it is suggested that the clinical packaging should be properly tightened and carefully handled, and the specification recommendations of double packaging will greatly reduce the probability of damage. If the damage problem is solved only by increasing the thickness of non-woven fabric, besides ensuring the resistance of bacteria, the probability of wet bag should be closely observed.
In short, the choice of non-woven fabric is not the thicker the better. Under the premise of ensuring the strain resistance and tensile strength of bacteria, the materials with good permeability will reduce the wet bag phenomenon.
However, due to its own structural characteristics, the increase of the thickness does not mean the improvement of the barrier performance. Microorganisms increased. For example, if a thickened nonwovens is used, the weight of its spunbond layer cannot effectively improve its bacterial resistance. Only when the pore size of the key filter layer (i.e. melt spray layer) can effectively filter the invasion of microorganisms and dust, can the bacterial resistance meet the requirements. With the increase of thickness, the permeability of packaging materials will be affected, and the probability of wet packaging will increase.
In clinical use of non woven cloth sterilization, there will be damage. For this damage, the main reason is that the micro fine plastic fiber after high temperature sterilization of non-woven fabric will shrink to some extent, and the performance of non-woven fabric will be brittle more easily than before sterilization. Therefore, too many or unreasonable methods of taking it in the process of use will cause destructive damage to the packaging materials, Except for use, burr and sharp instruments on the edge can cause the non-woven fabric to break. In this case, it is suggested that the clinical packaging should be properly tightened and carefully handled, and the specification recommendations of double packaging will greatly reduce the probability of damage. If the damage problem is solved only by increasing the thickness of non-woven fabric, besides ensuring the resistance of bacteria, the probability of wet bag should be closely observed.
In short, the choice of non-woven fabric is not the thicker the better. Under the premise of ensuring the strain resistance and tensile strength of bacteria, the materials with good permeability will reduce the wet bag phenomenon.
