Frangible Pathway With Free Fiber Ends For Hygienic Absorbent Article Removal
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Solution Overview
Problem
Existing pant-style disposable absorbent articles are unhygienic and inconvenient for removal and disposal, especially when soiled, as they often require sliding down the legs or tearing, which can lead to feces smearing and loss of control.
Innovation Solution
The absorbent article features a frangible pathway in the belt with lines of weakness comprising cut lines through a fibrous substrate, allowing for easy separation without visible perforations and minimizing rough or sharp edges during removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If tear lines with perforations are added to the front or back belt to enable easy separation, then ease of operation is improved, but visual appearance and perceived strength deteriorate due to highly visible perforations that may give the impression of weakness
Solution Approach 1:
The invention extracts the harmful visual appearance and perceived weakness associated with traditional perforations by removing them entirely. Instead, it uses invisible or minimally visible lines of weakness that are created through fiber orientation and bonding patterns rather than physical holes, thus maintaining ease of separation while eliminating the cosmetic and psychological drawbacks of visible perforations
Solution Approach 2:
The invention applies different properties to different regions of the belt. The lines of weakness have localized fiber orientation and bonding characteristics that enable easy separation, while the rest of the belt maintains normal visual appearance and perceived strength. This allows the belt to appear strong and intact to the caregiver while having predetermined easy-tear paths
2Ease of operation
If traditional perforations are used for easy tearing, then ease of operation is improved, but harmful factors increase due to potential feces smearing and loss of control during removal
Solution Approach 1:
The invention performs preliminary action by pre-defining the separation path through lines of weakness before the removal process occurs. These lines guide the tear along a controlled trajectory that keeps the separation clean and predictable, preventing the belt from tearing unpredictably and spilling feces, while still requiring minimal force to initiate and complete the separation
3Illumination intensity
If cut lines through fibrous substrate are used instead of perforations, then visual appearance is improved by reducing visibility, but manufacturing complexity increases due to precise cutting requirements
Solution Approach 1:
The invention changes the physical parameters of the fibrous substrate through controlled cutting that creates specific fiber end patterns. By adjusting cutting depth, angle, and pattern during manufacturing, the process creates lines of weakness with exposed fiber ends that are invisible or minimally visible from a distance, while the cutting process itself can be integrated into existing manufacturing equipment with minimal added complexity
Data Source
AI summary
The present disclosure relates to absorbent articles having front and/or back waist regions including one or more frangible pathways comprising lines of weakness with free fiber ends.