What are the main factors affecting the quality and performance of thermally bonded non-woven products?

At present, in the non-woven market, the quality of thermally bonded non-woven products is very different. When some non-woven fabric production and processing factories choose non-woven fabrics, most of them only pay attention to the price difference, and do not pay much attention to the difference in fabric quality. Since the quality of thermally bonded non-woven products is seriously unqualified, what are the main factors that affect the quality and performance of thermally bonded non-woven products besides the fabric? 　　 In the hot air bonding process, the heat carrier is hot air. The hot air penetrates the fiber web and transfers heat to the fibers to melt them and create bonds. Therefore, the temperature, pressure, fiber heating time and cooling rate of the hot air will directly affect the performance and quality of the product.　　 As the temperature of the hot air increases, the vertical and horizontal strength of the product increases, but the flexibility of the product decreases and the hand feel becomes harder. Table 1 shows the changes in strength and flexibility with temperature when producing 16g/m products.　　 Hot air pressure is an important parameter that affects hot air bonding products. Generally, as the basis weight and thickness of the web increase, the pressure should be increased accordingly so that the hot air can pass through the web smoothly. However, before the web is bonded, excessive pressure will destroy its original structure and cause the web to fail. uniform.　　 Strength and flexibility change with temperature, and the heating time of the web depends on the production speed. To ensure that the fiber is fully melted, there must be sufficient heating time. In production, when changing the production speed, the hot air temperature and air pressure must be increased accordingly to ensure product stability. The processing technology of thermally bonded non-woven fabrics is relatively complicated and involves a lot of processing links. Therefore, it is very important to control the quality during the production and processing of thermally bonded non-woven fabrics, so as to ensure the thermally bonded non-woven fabrics. Product quality and performance.　　 Previous post: Analysis of 4 major factors affecting the market price of non-woven fabrics