The composition of a diaper:

1. Surface coating layer: Its main function is to ensure the rapid infiltration of urine and effectively prevent the infiltration of urine, so as to keep the surface layer of urine trousers dry and clean.
Breathable non-woven fabric can improve the breathability of the diaper. Water vapor can circulate outside the diaper. It can discharge moisture and heat in time, effectively reduce the chance of urine rash, soft and comfortable without irritating the skin.
2. Absorptive core layer: The main function of this layer is to capture and rapidly absorb urine, disperse it or spread it through the core layer by capillarity, and finally absorb and store urine.

At present, the absorption core layer of diapers on the market is mainly composed of pure wood pulp (villous pulp) and super absorbent resin (SAP) layer structure.

3. Back-sheet: Now many diapers have been used in non-woven fabrics that feel more comfortable and breathable. The market price is relatively high, and the air permeability is also relatively good.