The reasons for the uneven thickness of non-woven fabrics during production

Today, let's talk about the relevant knowledge of meltblown cloth equipment. Many friends said that under the same processing conditions, what are the reasons for the uneven thickness of non-woven fabrics during production? The editor specifically summarizes the following points:

1. The blending of low-melting fiber and conventional fiber is uneven: because different fibers have different cohesion, in general, low-melting fiber has greater cohesion than conventional fiber. If it is uniform, the part with less content will not be able to form a sufficient network structure in time, so that the non-woven fabric produced in this way is thinner, which is thicker than the place with more low-melting fiber content.

2. Incomplete melting of low melting point fibers: This is mainly due to insufficient temperature. For non-woven 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 to . Because the non-woven fabric on the side has enough heat, it is usually thicker, and the non-woven fabric in the middle part forms a thinner non-woven fabric because the heat is easy to be insufficient, 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 occur during the production of the non-woven fabric.