Tampon With Segmented Fiber-Integrated Nonwoven Layers
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Solution Overview
Problem
Conventional tampons often fail to re-expand sufficiently or quickly enough to effectively intercept menstrual flow, leading to leakage issues due to excessive compression during insertion, which inhibits their ability to provide good coverage.
Innovation Solution
A tampon design featuring an absorbent member with an insertion area, intermediate area, and withdrawal area, composed of fiber-integrated nonwoven layers with fiber integration only in the attachment area, allowing for better expansion and movement without inhibiting structural integrity, and a withdrawal line for easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tampon is compressed to facilitate insertion, then ease of insertion is improved, but the ability to re-expand is worsened
Solution Approach 1:
The absorbent member is divided into multiple nonwoven layers that are individually compressed during insertion but can independently re-expand after insertion. This segmentation allows the tampon to maintain compact size for easy insertion while preserving the ability of each layer to re-expand and provide adequate absorption capacity.
Solution Approach 2:
The patent applies different compression characteristics to different regions of the tampon. The absorbent member is designed with varying degrees of compression in different areas, allowing certain regions to re-expand more effectively while maintaining overall compactness for insertion. This local differentiation ensures that the tampon can both facilitate easy insertion and maintain reliable re-expansion capability.
2Strength
If fiber integration is applied between adjacent nonwoven layers, then structural integrity is improved, but re-expansion capability is worsened
Solution Approach 1:
Fiber integration is selectively applied only in specific regions where structural support is needed, rather than uniformly across all layers. This localized fiber integration provides necessary structural integrity in certain areas while leaving other areas free to re-expand, thus resolving the contradiction between strength and re-expansion capability.
Solution Approach 2:
The absorbent member is segmented into multiple nonwoven layers with selective fiber integration between adjacent layers. This segmentation allows fiber integration to be applied only where structural support is required, while maintaining the ability of individual layers to re-expand independently, thereby balancing structural integrity with re-expansion capability.
Data Source
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AI summary
A tampon has a pair of longitudinally extending side edges and an absorbent member. The absorbent member has an insertion area, a withdrawal area, and an intermediate area between the insertion area and the withdrawal area and an attachment area. The absorbent material has a plurality of fiber integrated nonwoven layers but are without fiber integration adjacent layers outboard of the attachment area. A withdrawal line extends from the withdrawal area and is attached to the absorbent member in the attachment area such that each of the plurality of absorbent layers is attached to an adjacent nonwoven layer in the attachment area.