Reasons For Uneven Thickness Of Nonwoven Fabrics In The Production Process

Today, let's talk about the relevant knowledge of Meltblown Nonwoven Fabric equipment. Many friends said that under the same processing conditions, what are the reasons for the uneven thickness of non woven fabrics during production?

1. Uneven blending of low-melting fiber and conventional fiber: because different fibers have different cohesion. Generally speaking, low - melting -point fibers have greater cohesion than conventional fibers. If the dispersion of low - melting - point fibers is uneven, the part with less content cannot form a sufficient network structure in time. The Nonwoven Fabric is thinner, and the place where there is more low - melting fiber content is thicker.

2. Incomplete melting of low melting point fibers: This is mainly due to insufficient temperature. For nonwoven fabrics with low basis weight, it is not easy to have insufficient temperature, but for products with high basis weight and high thickness, special attention should be paid up. For example, the Non Woven Fabric Roll on the side is usually thicker because it has enough heat, and the Non Woven Fabric in the middle part forms a thinner nonwoven fabric because of insufficient heat, which is one of the reasons.

3. The shrinkage rate of the fiber is high: whether it is a conventional fiber or a low melting point fiber, if the hot air shrinkage rate of the fiber is high, uneven thickness will also appear during the production of the nonwoven fabric.