Segmented Sanitary Napkin with Sliding Auxiliary Plug
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Solution Overview
Problem
Existing sanitary napkins often fail to completely absorb bodily secretions when a user is lying down, leading to undesirable leakage and discomfort due to their inability to conform to varying physical characteristics.
Innovation Solution
A multi-layered sanitary napkin design featuring a primary pad with a permeable top layer, an intermediate absorbent layer, and a liquid impermeable bottom layer, along with a multi-layer auxiliary pad that includes an upstanding plug for internal placement, allowing for adjustable positioning to enhance absorption and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a combined internal and external sanitary napkin design is used, then absorption capability is improved, but comfort and adaptability to varying physical characteristics deteriorates
Solution Approach 1:
The sanitary napkin is divided into two separate pads: a primary pad for external wear and a secondary pad for internal placement. Each pad is independently designed with its own absorbent layers and structure, allowing them to function separately or together. This segmentation enables the user to choose the appropriate pad type based on their physical characteristics and needs, while maintaining high absorption capability when both are used together.
Solution Approach 2:
The invention introduces adjustability through a sliding mechanism where the secondary pad can move longitudinally within the primary pad. This dynamic adjustment allows the combined pad assembly to adapt to varying user anatomy and comfort preferences, resolving the contradiction between maintaining reliable absorption and adapting to different physical characteristics.
2Reliability
If a fixed-position auxiliary pad is used, then absorption effectiveness is improved, but ease of operation and user comfort deteriorates
Solution Approach 1:
The auxiliary pad is designed with sliding adjustability within the primary pad, allowing users to move the auxiliary pad to different positions along the longitudinal axis. This dynamic positioning capability enables users to find the most comfortable and effective position for their individual anatomy, maintaining absorption effectiveness while significantly improving ease of operation and user comfort.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively absorbs all bodily secretions while allowing for adjustable placement to accommodate individual physical characteristics, reducing leakage and enhancing user comfort.
Implementation Method 1
an intermediate absorbent layer with a cavity formed therein
Implementation Method 2
intermediate absorbent layer
Implementation Method 3
a permeable top layer
Implementation Method 4
a liquid impermeable bottom layer
Data Source
AI summary
A sanitary napkin includes a multi-layered primary pad having an intermediate absorbent layer with a cavity formed therein and a liquid permeable top layer overlying the absorbent layer with a slit formed therein. A cavity is formed in the absorbent layer and is positioned below the slit. An auxiliary pad has an upstanding plug with the auxiliary pad disposed partially in the cavity and the plug extending through the slit.