waterproof air through non woven fabtic

In the existing water-repellent non-woven fabric SMS, a water-repellent material is arranged between two layers of anti-sticking fibers, and then bonded by heat and pressure. The water-repellent non-woven fabric produced by this process has relatively high hardness and poor skin affinity, which will affect the comfort of the product when it is applied to the protective enclosure of diapers or sanitary napkins. During production, in order to reduce the hardness of the water-repellent non-woven fabric, small bumps are usually set on the surface of the heat-pressing roller, which makes the bonding of the fiber layer not tight enough, and at the same time produces a problem for the melt-blown layer with water-repellent function in the middle layer. Damaged, water-repellent non-woven fabrics have poor water pressure resistance. In order to solve the above problems, the publication number CN205242013U provides a high water pressure resistant waterproof air through non woven fabtic: including the first fiber web, the second fiber web and the melt-blown layer, the melt-blown layer is located on the first fiber web and the second fiber web In between, the first fiber web, the second fiber web and the melt-blown layer are bonded by hot air. As a result, the multi-layer fiber web and the melt-blown layer are bonded by hot air, the fiber web can maintain porosity, and the softness and skin-friendliness of the water-repellent non-woven fabric can be improved. Hot air bonding is adopted, so that the fiber web and the melt-blown layer have a good bonding effect and the melt-blown layer will not be damaged, and the obtained water-repellent non-woven fabric has strong water pressure resistance.