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Research Status and Market Development of Each Layer Structure of Baby Diapers

Baby  sustainable disposable diapers, as a disposable sanitary absorbent, can quickly absorb the baby's urine, keep the baby's skin dry and easy to be replaced.

1. The structure of baby diapers

Most absorbent baby diapers are a liquid absorption and control system built up of multiple layers of non-woven materials. Early diapers consisted of a surface layer, an absorbent core layer, and a back layer. The surface layer is soft and breathable, which can quickly absorb urine and allow urine to penetrate, keeping the skin dry. The absorbent core layer is used to absorb and store a large amount of liquid; the back layer is used to prevent the seepage of urine and play a role of isolation. In actual use, super absorbent resin (SAP) has better liquid absorption capacity than wood pulp fiber. However, this material swells after absorbing liquid, reducing the gap between the resins, making it difficult for more surface layer liquid to continue to penetrate, causing gel blockage, and reducing the liquid absorbing ability of the absorbent core layer. The different types of diapers for newborns use the different materials.

2. The surface layer of the baby diaper

Because it adheres to the surface of the skin during use, the surface layer of baby diapers is mostly made of soft, breathable materials, such as hot air or hot-rolled non-woven fabrics. At present, the commonly used low-melting two-component composite fiber (ES fiber) hot-air non-woven fabric or pure cotton fiber spunlace non-woven fabric is commonly used in the market. There are many types of diaper surface materials, including perforated film, hot-air nonwoven fabric, perforated nonwoven fabric, pure cotton nonwoven fabric, functional nonwoven fabric and so on.

3. Diversion layer of baby diapers

The flow guide layer is located between the surface layer and the absorbent core layer. Its core function is to absorb and temporarily store liquid, guide the liquid to be evenly channeled to the absorbent core layer along the longitudinal direction of the diaper body, and increase the utilization rate of the absorbent core layer. The diversion layer is divided into a non-woven fabric diversion layer and a perforated film diversion layer. The former includes a single-layer hot air non-woven fabric diversion layer and a double-layer composite non-woven fabric diversion layer.

4. The absorbent core layer of baby diapers

The absorbent core plays a key role in the extra absorbent diapers. The liquid absorption and absorption speed of the core layer directly affect the liquid absorption quality and use time of the diaper. Because the source of fluff pulp is not easy, and the water absorption efficiency is not high, the absorbent core layer of diapers mostly uses a mixture of fluff pulp and SAP.

5. Market development of baby diapers

In developed markets such as South Korea, Australia, and Hong Kong, the penetration rate of baby diapers is relatively high, and the market is quite mature. The baby diaper market in Mainland China is in a stage of accelerated development. With the continuous improvement of people's living standards, my country's sustainable disposable diapers market will continue to flourish, and market competition will become increasingly fierce. Therefore, it is particularly important to grasp the direction of market development and meet different consumer needs.

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