Structure: The current structure of diapers is generally a four-layer structure.
1. The surface layer is made of cotton (comfortable) and fiber. The surface layer is in direct contact with the baby's skin, accepting and passing urine, the surface layer has high requirements for materials, is soft to the touch, and does not irritate the baby's skin.
2. Special non-woven fabric for the diversion layer (water-locking layer) (strong/fast absorption, instant absorption) The conduction layer is the most important item in thin or ultra-thin diapers, and is the bridge between the surface layer and the absorbing layer.
3. Core sheet (absorbing layer) wood pulp cotton + SAP, polymer (Japanese Sumitomo polymer is better) (super thin, good water-locking property). (SAP is a super-strong polymer absorbent resin with super water-locking properties) is the most important functional layer in diapers
4, water-locking layer anti-reverse seepage
5, bottom layer PE film or PE film + non-woven fabric (good air permeability, Reduce red butt) The function of the bottom layer is to prevent leakage. The composite bottom layer commonly used now is that the diaper has a more cloth texture and a better hand feel.
Anti-leakage protection, most of the products are single-layer, and a few are double-layer.
7. Adhesive stickers: plastic stickers (common-silent) - non-woven fabric stickers - magic stickers are more humanized and can be used repeatedly.
