Baby Diapers are designed to quickly absorb and lock in liquid while keeping baby's skin dry. Here's how baby diapers work and their main components:
1. Structural composition
Baby Diapers are mainly composed of three layers:
(1). Top layer (inner layer: the part in direct contact with the baby’s skin.
-Material: Generally made of soft non-woven fabric (non-woven fabric).
-Function: Breathable and quickly absorbs urine, keeps baby's skin dry and comfortable, and prevents urine from seeping back.
(2). Absorption layer (middle layer: mainly responsible for absorbing and locking urine.
-Material: Mainly composed of fluff pulp and super absorbent resin (SAP).
-Function: The villus pulp absorbs urine and guides it to the SAP area. The SAP quickly absorbs and locks the urine, converting it into gel to prevent leakage and back seepage.
(3). Bottom layer (outer layer): waterproof layer to prevent urine leakage.
-Material: Generally made of breathable polyethylene film or other waterproof materials.
-Function: Prevents liquid from seeping out while allowing air circulation to reduce stuffiness.
2. The process of absorbing and locking liquids
(1). Urine enters the top layer:
-When a baby pees, the urine first comes into contact with the top layer of the diaper. The top layer is designed to quickly absorb fluids and quickly transfer urine to the lower layer.
(2). Urine is absorbed by the absorbent layer:
-Urine enters the absorbent layer after passing through the top layer. The fluff pulp and SAP in the absorbent layer quickly absorb urine.
- SAP (Super Absorbent Resin) is the key ingredient, it can absorb hundreds of times its own weight in liquid and convert it into a gel, locking the liquid in and preventing it from seeping back.
(3). Prevent liquid leakage:
- The bottom waterproof membrane effectively prevents urine from leaking to the outside while maintaining a certain degree of breathability, reducing the risk of stuffiness and eczema.
3. Other functional design
Modern diapers are also designed with many other features to improve usage and comfort:
(1). Leak-proof wings: located around the thighs to prevent urine from leaking from the sides.
(2). Elastic waist: Provides better fit and comfort, adapting to baby's body movements.
(3). Humidity indicator strip: Some diapers have a color-changing humidity indicator strip. When the urine reaches a certain amount, the color of the indicator strip will change, indicating that the diaper needs to be changed.
(4). Breathable materials: High-quality diapers use breathable materials to ensure air circulation, reduce stuffiness and protect baby's skin.
In Conclusion
Through careful design and multi-layer construction, diapers can efficiently absorb and lock in urine, keeping baby's skin dry and preventing leaks and rashes. These designs not only improve the functionality and comfort of diapers, but also make it more convenient and worry-free for parents to care for their babies. If you have more questions about some specific features of diapers, feel free to let me know.
