The basic structure of sanitary napkins

The sanitary napkin mainly includes three layers of structure: surface layer, absorbent core and bottom layer, and the material of each layer is bonded with hot melt adhesive. The outermost layer (i.e. the bottom layer) is a nonwoven, and the material is soft. Inward is a leak-proof membrane (composed of waterproof paper or polyethylene film). Further inward is a fluff slurry mixed with polymer absorbent wrapped in toilet paper, forming a strong absorber, and once menstrual blood penetrates into this layer, it will be firmly attached and will not reverse or scatter. There is also pressure-sensitive tape (self-adhesive) on the back of the sanitary napkin to contrast with the release paper. When using it, you only need to tear off the release paper and throw it away, and then attach the tape to the underwear to prevent slipping.