A night-use auxiliary leakproof pad

By introducing raised tampons with specific geometric shapes and a multi-layered composite structure into overnight panty liners, the leakage problem of overnight sanitary napkins when lying flat or turning over is solved, achieving precise filling of the groin area and effective interception of fluid, thus improving leakage prevention performance.

CN122182287APending Publication Date: 2026-06-12陈雪娇
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Patent Information

Application Number
CN202610515744.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-18
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing overnight sanitary napkins are not very effective at preventing leakage when lying flat or turning over, especially in preventing the migration of fluid in the groin area, which can lead to menstrual blood staining of outer clothing or bedding.

Method used

A nighttime auxiliary leak-proof pad was designed, which uses raised cotton strips with specific geometric dimensions and gradient heights to precisely fill the groin area in conjunction with the pad body. Through a composite structure of a liquid-permeable surface layer, an absorbent core layer, and a leak-proof bottom layer, it achieves effective interception and diversion of fluid.

Benefits of technology

Under both dynamic and static conditions, the raised cotton strips can adaptively embed into the gaps between the strands to prevent fluid leakage and enhance the leak-proof effect. They also disperse liquid through the diversion channels and absorption zones to avoid local overflow and provide comfortable and effective protection.

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Abstract

The present application provides a kind of night auxiliary leak-proof pad, including pad body and raised cotton, the pad body width is 150-200mm, length is 80-100mm, provide preset transverse coverage area and longitudinal protection length in human hip area;The raised cotton is set in the middle of pad body, length is 50-60mm, raised cotton presents the geometric gradient form of front high and rear low on longitudinal section, its rising camber relative to the elevation of pad body horizontal reference surface is set to 15-20 °, the width of raised cotton is front and rear gradient structure in horizontal projection plane, width gradually changes from 10mm of front end to 5mm of rear end.The present application is filled accurately to the region of femoral suture from coccyx to anus segment by raised cotton with specific geometric dimension and gradient height characteristics, and has better leak-proof effect.
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Citation Information

Patent Citations

  • Hygienic product for preventing rear overflowing

    CN105030422A

  • Side-leakage-proof absorption body for hygienic products

    CN112274327A

  • Displacement-preventing and side-leakage-preventing sanitary towel with inverted-U-shaped cotton clamping structure

    CN121015379A