What is the reason for the uneven thickness of non-woven products?

Regarding several problems in the processing of non-woven products, the reasons for the uneven thickness of non-woven products under the same processing conditions may have the following points. The following plastic industry will explain to you. 1. Low melting point fibers and conventional fibers cannot be uniformly mixed with cotton: different fibers have different cohesion. Generally speaking, low melting point fibers have greater cohesion than conventional fibers and are less likely to be dispersed. For example, Japan 4080, South Korea 4080, South Asia 4080 or Far East 4080 have different cohesion. If the distribution of the low-melting fiber is uneven, the content of the low-melting fiber will be reduced because a sufficient network structure cannot be formed, so there will be more nonwoven products. The content of low-melting fiber is large. 2. Incomplete melting of low-melting fiber: The incomplete melting of low-melting fiber is mainly due to insufficient temperature. For nonwoven products with low basis weight, it is usually not easy to cause the problem of insufficient temperature, but for high basis weight, special attention should be paid to products with high thickness. Due to sufficient heat, the nonwoven products at the edges are usually thicker, and since the heat in the middle is not enough to form a thin nonwoven product, the nonwoven products at the middle part are usually thicker. 3. High shrinkage rate of fiber: whether it is conventional fiber or low melting point fiber, if the hot air shrinkage rate of the fiber is high, the problem of uneven thickness will easily occur due to the shrinkage in the manufacturing process of nonwoven products. The above is the problem of unevenness in the processing of non-woven products. At the same time, the plastic industry welcomes you to inquire! Previous: Non-woven bag customization needs to pay attention to