What is the difference between diapers with different cores

The first-generation diaper core: The first-generation core is formed by mixing fluff pulp and polymer water-absorbing resin (SAP) without layering or partitioning, becoming a traditional core. The first-generation core has good water absorption effect, but because its structure is relatively loose, no adhesive is added, and the fluff pulp and SAP cannot be fixed, so there will be lumps and faults during use. If you find stiff lumps during use, it is because the SAP content is too high in the ratio of SAP to fluff pulp, and the mixing is not good. Most of the reason is to increase SAP and reduce fluff pulp for the one-sided pursuit of water absorption. The softer lump means that the ratio of fluff pulp and SAP is relatively balanced, and generally does not affect the baby's activities. The second-generation diaper core: The second-generation core is a partition based on the first-generation core, which can fix the fluff pulp and SAP to a certain extent, thereby reducing the occurrence of lumping, but it cannot be avoided Tuo phenomenon. The third-generation diaper core: The third-generation core adopts a composite core structure, which is composed of dust-free paper, non-woven fabric and SAP. The use of a composite core can make the diapers thinner, and can not be layered continuously. The third-generation core body is made of hot-melt glue between each layer of material. The core body contains a large amount of SAP to ensure the water absorption of the diaper. After absorbing water, the whole swells, and it is flat and not lumpy. The disadvantage of using a composite core is that the process is more complicated, the equipment production speed is low, and the cost will be higher than that of the traditional core. Fourth-generation diaper core: The fourth-generation core is further partitioned on the basis of the third-generation core layering. Previous: It is recommended to choose diapers with soft covering Next: Seven rules for choosing diapers