Tampon Pledget Indentation for Structural Stability
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Solution Overview
Problem
Existing tampons often delaminate, unroll, or telescope during use and withdrawal due to factors like saturation level and withdrawal angle, despite efforts to stabilize them with binder fibers, adhesives, and grooved compression, leading to structural degradation.
Innovation Solution
The method involves compressing an absorbent blank into a pledget with longitudinal grooves and penetrating it to form alternating rows of indentations, which increases layer integration and stability, with the compressing and penetrating steps potentially done in a single compression unit, and the pledget may be wrapped with a cover for additional support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If binder fibers, adhesives, or grooved compression are used to stabilize tampons, then structural stability during use is improved, but the tampons still delaminate or telescope during withdrawal due to saturation and wear
Solution Approach 1:
The pledget is segmented into multiple layers with through-layers extending from one end to the other end, creating a layered structure that prevents delamination and telescoping during both use and withdrawal. The through-layers act as structural dividers that maintain integrity throughout the product lifecycle.
Solution Approach 2:
The through-layers are pre-formed within the pledget structure before saturation occurs, establishing structural integrity in advance. This preliminary structural reinforcement ensures that when saturation and wear occur during use, the pledget maintains its shape and does not delaminate or telescope during withdrawal.
2Strength
If multiple stabilization methods (binder fibers, adhesives, grooved compression) are applied, then manufacturing complexity increases, but structural degradation still occurs during withdrawal
Solution Approach 1:
The invention extracts and eliminates the need for binder fibers, adhesives, and complex grooved compression systems by replacing them with a simpler through-layer structure. This through-layer design provides the necessary structural reinforcement without requiring multiple separate stabilization components or complex manufacturing steps.
Solution Approach 2:
Instead of adding multiple stabilization layers and components to prevent degradation, the invention inverts the approach by using a minimal through-layer structure that inherently prevents delamination and telescoping. This inverted approach simplifies manufacturing while achieving the desired structural integrity.
3Ease of operation
If the pledget is highly compressed to reduce size, then insertion comfort is improved, but the pledget becomes more prone to structural degradation during withdrawal
Solution Approach 1:
The through-layers are strategically positioned and distributed throughout the compressed pledget structure, providing localized structural reinforcement where needed. This allows the pledget to maintain high compression for insertion comfort while the through-layers prevent structural degradation during withdrawal by reinforcing critical areas.
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
This approach enhances the structural integrity of tampons, allowing them to withstand withdrawal forces without delaminating or structurally degrading, as demonstrated by increased peak telescoping force compared to control tampons without indentations.
Implementation Method 1
compressing the absorbent blank into a pledget having a compressed diameter and a plurality of longitudinal grooves
Data Source
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AI summary
A method of integrating a tampon includes providing an absorbent blank having a longitudinal centerline and compressing the absorbent blank in a direction perpendicular to the longitudinal centerline to form a pledget having a compressed diameter. The method also includes penetrating the pledget in the perpendicular direction to a compressed depth of at least 20% of the compressed diameter to form a discrete indentation.