Foldable Sanitary Napkin With Hinged Rear Coverage
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Solution Overview
Problem
Conventional sanitary napkins fail to provide adequate rear coverage during heavy menstrual flow, leading to leaks and discomfort, and lack flexibility, portability, and advanced odor and pH management features.
Innovation Solution
A foldable sanitary napkin with a pivotally connected T-shaped design, featuring a detachable rear pad and customizable fold lines, incorporates odor-controlling materials and a pH-balancing agent, ensuring comprehensive coverage and comfort while being compact and easy to store.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the rear pad is made wider to cover the buttocks area, then leak prevention and coverage area are improved, but the napkin becomes bulkier and less portable
Solution Approach 1:
The napkin is divided into a front pad and a rear pad that can be separated. The rear pad is pivotally connected to the front pad via a living hinge, allowing it to be detached along a perforated line. This segmentation enables the rear pad to be removed when not needed, reducing bulkiness while maintaining full coverage capability when required.
Solution Approach 2:
The rear pad is connected through a living hinge that allows pivotal movement, transforming the napkin from a static single-piece design to a dynamic two-part structure. This dynamic connection enables the rear pad to be folded underneath or detached completely, adjusting the napkin's volume and portability based on user needs.
2Stability of the object's composition
If the rear pad is rigidly connected to the front pad, then structural stability is improved, but flexibility and wearability are reduced
Solution Approach 1:
The living hinge provides a dynamic connection between the front pad and rear pad, replacing rigid fixation with a flexible pivotal joint. This allows the rear pad to move relative to the front pad, enhancing flexibility and wearability while maintaining structural integrity when needed.
Solution Approach 2:
By segmenting the napkin into two separately controllable pads connected by a living hinge, the design achieves both stability (when pads work together) and flexibility (when pads can move independently or separate).
3Adaptability or versatility
If the rear pad is made detachable along a perforated line, then adaptability and portability are improved, but manufacturing complexity increases
Solution Approach 1:
The perforated line provides a pre-defined separation path that allows easy detachment of the rear pad. This segmentation feature, combined with the living hinge, enables users to customize the napkin configuration while maintaining relatively simple manufacturing processes using standard perforation and hinge-making techniques.
4Ease of manufacture
If conventional single-piece designs are used, then manufacturing simplicity is maintained, but coverage area and leak prevention are insufficient
Solution Approach 1:
The napkin is segmented into front pad and rear pad components, each optimized for specific coverage areas. The front pad covers the panty line area while the wider rear pad extends to cover the buttocks area, achieving comprehensive protection without significantly complicating manufacturing.
Solution Approach 2:
The rear pad is designed with extended width in the lateral direction to provide buttocks coverage, adding dimensional coverage beyond the conventional front-only focus of traditional napkins.
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 minimizes leaks and discomfort, enhances user confidence through odor control and pH balance, and adapts to different flow levels and activities, maintaining comfort and convenience.
Implementation Method 1
The sanitary napkin incorporates an absorbent core in both the front and rear pads, with the rear pad featuring a higher retention capacity to manage heavier flow
Implementation Method 2
a soft, fluid-permeable top sheet and a barrier sheet ensures that the napkin remains comfortable to wear while preventing fluid leakage
Implementation Method 3
The rear pad is pivotally connected to the front pad via a living hinge, allowing the rear pad to be folded underneath or detached along a perforated line
Implementation Method 4
The sanitary napkin integrates odor-controlling materials and a pH-balancing agent within the absorbent core to address menstrual odor and maintain a healthy skin environment
Data Source
AI summary
A foldable sanitary napkin is provided. The sanitary napkin includes a front pad pivotally connected to a rear pad via a living hinge. The front pad can rest in the panty line area of an undergarment, wherein the rear pad extends laterally beyond the front pad to provide enhanced rear coverage. The front pad and the rear pad each include a fluid-permeable top sheet, an acquisition layer, an absorbent core, and a barrier sheet to prevent fluid leakage. The sanitary napkin further includes an odor-controlling material, and a pH-balancing agent integrated into the absorbent cores of both the front and rear pads. The rear pad includes fold lines for compact storage. An adhesive layer on the bottom surfaces of the front and rear pads secures the napkin to the undergarment. The living hinge and perforated line enable optional separation or folding of the rear pad.