婴儿纸尿裤
By introducing a multi-level color-developing pattern layer and a mosquito-repellent non-woven fabric layer into the diaper, the problems of traditional diapers being unable to quantify urine volume and lacking mosquito-repellent function are solved. This achieves urine volume indication and mosquito-repellent effect, reduces the risk of diaper rash, and protects the baby's skin health.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN PURCOTTON TECH
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional disposable diapers' wetness indicator lines only provide a binary indication, failing to quantify urine volume or provide tiered warnings. This makes it difficult for parents to accurately determine when to change diapers, easily leading to diaper rash or wasted resources. Furthermore, the lack of targeted insect repellent design may cause skin problems and diseases.
Design a baby diaper that uses multiple concentric color-printing pattern layers to indicate urine volume in three levels, and has an elastic non-woven fabric layer with mosquito-repellent function at the back waistband. The color-printing pattern layer is composed of color-printing material and color-printing microcapsules, with the colorant being natural pigment particles, and the elastic non-woven fabric containing natural mosquito repellent.
It features three levels of urine output indicators to help parents manage diaper changes scientifically, reduce the incidence of diaper rash, and protect babies from mosquito bites with natural mosquito repellent, avoiding contact with chemicals on the skin and reducing the risk of skin problems and disease transmission.
Smart Images

Figure CN224505742U_ABST
Abstract
Claims
1. An infant's paper diaper comprising a pant body including a crotch portion and front and rear waist portions provided on both sides of the crotch portion, characterized in that: The pants body includes a surface layer, an absorbent core, and a bottom film. The bottom film has multiple color-developing pattern layers, which are spaced apart and concentrically arranged. An elastic non-woven fabric layer is provided at the back waist, which is disposed between the surface layer and the bottom film. The elastic non-woven fabric layer includes mosquito-repellent spunbond fabric.
2. The baby diaper according to claim 1, characterized in that: The color-developing pattern layer is formed by printing a color-developing printing material onto the base film. The color-developing printing material includes printing ink and color-developing microcapsules. The color-developing microcapsules include a microcapsule wall and a color-developing agent core disposed inside the microcapsule wall.
3. The infant diaper according to claim 2, characterized in that: The wall thickness of the microcapsule walls of the multiple color pattern layers increases sequentially along the direction of increasing diameter of the concentric circles.
4. A baby diaper according to claim 2, characterized in that: The colorimetric cores of the multiple colorimetric pattern layers are colorimetric cores of different colors.
5. The infant diaper of claim 2, wherein: The microcapsule walls are made of biocompatible polymer materials, and the color-developing agent cores of the multiple color-developing pattern layers are chlorophyll particles, turmeric particles, and red yeast rice particles, respectively.
6. The infant diaper of claim 1, wherein: The surface layer includes hot air fabric, spunbond fabric, pure cotton spunlace fabric, composite nonwoven fabric of hot air fabric and spunbond fabric, composite nonwoven fabric of spunbond fabric and pure cotton spunlace fabric, or composite nonwoven fabric of hot air fabric and pure cotton spunlace fabric.
7. The infant diaper of claim 1, wherein: The absorbent core includes a nonwoven fabric layer and a SAP layer, which are alternately arranged, with the two outermost layers being the nonwoven fabric layer.
8. An infant diaper according to claim 7, characterized in that: The nonwoven fabric layer includes hot-air fabric, spunbond fabric, or pure cotton spunlace fabric.
9. The infant diaper of claim 1, wherein: The pants have leak-proof side panels on both sides, and the front waistband and back waistband are detachably connected by Velcro.
10. The infant diaper of claim 1, wherein: The mosquito-repellent spunbond fabric is made from modified mosquito-repellent fibers made by adding natural mosquito repellent agents to the spinning solution.