Foldable Sanitary Napkin Binding Strap for Lint-Free Roll-Up
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Solution Overview
Problem
Existing sanitary napkin products lack a reliable binding structure that prevents fluff accumulation, leading to reduced adhesion and ease of separation, resulting in exposure of dirt and inconvenience during use.
Innovation Solution
A sanitary napkin structure featuring a foldable binding strap with a second adhesive portion that does not contact the underwear or sanitary napkin body, combined with a herringbone arrangement of fixing portions to provide anti-pull force, ensuring strong adhesion and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the fixing strap is bonded to the sanitary napkin body and underwear, then good connection firmness is achieved, but fluff accumulates on the adhesive portions reducing adhesion
Solution Approach 1:
The binding strap is divided into multiple functional sections: a first binding strap portion for initial binding, a second binding strap portion for reinforcement, and a peeling portion for easy removal. This segmentation allows each portion to perform its specific function optimally without fluff contamination affecting the entire strap's adhesion.
Solution Approach 2:
The adhesive function is extracted from the binding strap itself and transferred to separate adhesive portions that are selectively applied. The first adhesive portion is applied to the first binding strap portion, while the second adhesive portion is applied to the second binding strap portion, allowing controlled adhesion without fluff accumulation on critical bonding surfaces.
2Strength
If one end of the fixing strap is fixed to the sanitary napkin body by heat pressing, then connection firmness is achieved, but the fixing strap is easy to be torn off when opened
Solution Approach 1:
The first binding strap portion is pre-fixed to the sanitary napkin body at a first position using heat pressing, creating a stable anchor point before use. This preliminary fixation ensures that when the user opens the other end, the strap remains securely attached and cannot be accidentally torn off, while still allowing convenient opening of the peeling portion.
3Ease of operation
If the two ends of the fixing strap are pasted together, then binding is achieved, but adhesion is insufficient and easy to be stretched apart
Solution Approach 1:
The first binding strap portion and second binding strap portion are combined to work together in sequence. The first portion provides initial binding with its adhesive portion, and the second portion reinforces the binding when folded back and adhered to the first portion, creating a multi-layered adhesion system that significantly increases binding strength and resistance to stretching.
Solution Approach 2:
The second binding strap portion acts as an intermediary reinforcement between the first binding strap portion and the sanitary napkin body. When the second portion is folded back and adhered, it creates an intermediate adhesion layer that strengthens the overall binding structure and prevents stretching apart.
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 ensures firm binding and prevents fluff accumulation, maintaining adhesion and preventing separation, enhancing user convenience and reliability.
Implementation Method 1
A bottom surface of the sanitary napkin body is provided with a first adhesive portion along a length direction of the sanitary napkin body, and one end of the foldable binding strap is fixed to the bottom surface of the sanitary napkin body and is connected to one end of the first adhesive portion
Implementation Method 2
since one end of the fixing strap is fixed to the bottom surface of the sanitary napkin body by heat pressing, although it can achieve good connection firmness
Data Source
AI summary
A sanitary napkin structure convenient for rolling up after use includes a sanitary napkin body and a foldable binding strap. A first adhesive portion is provided at a bottom surface of the sanitary napkin body. The foldable binding strap includes a peeling end, a first binding strap portion, a second binding strap portion, a first fixing portion, a second fixing portion, and a second adhesive portion, and the second fixing portion and the first fixing portion are arranged in a herringbone shape and fixed on the bottom surface of the sanitary napkin body.