Fibrous structures comprising three or more regions
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Solution Overview
Problem
Existing fibrous structures comprising filaments and solid additives lack regions with distinct micro-CT intensive properties, such as basis weight and light transmission, limiting their performance and aesthetics.
Innovation Solution
A fibrous structure with three or more regions, where at least one common micro-CT intensive property differs in value, and two regions exhibit different micro-CT basis weight and light transmission values, achieved by creating a continuous network region with discrete zones and specific filament and solid additive ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a uniform fibrous structure is used, then manufacturing simplicity is maintained, but performance is restricted to an overall level characteristic of the uniform structure
Solution Approach 1:
The fibrous structure is divided into multiple regions (first region, second region, third region) with different basis weights and properties. Each region is segments of the whole structure, allowing different performance characteristics in different areas while maintaining overall structural integrity
Solution Approach 2:
Different regions of the fibrous structure are assigned different basis weights and material compositions tailored to specific performance requirements. The first region has higher basis weight for strength, the second region has lower basis weight for absorbency, and the third region provides transitional properties, optimizing overall performance
2Reliability
If regions with different basis weights are created, then superior overall performance is achieved, but structure complexity increases
Solution Approach 1:
The structure is segmented into distinct regions with different properties, but these segments are arranged in a systematic pattern that can be manufactured using standardized processes, balancing complexity with manufacturability
Solution Approach 2:
Multiple regions with different basis weights and properties are merged into a single integrated fibrous structure, allowing the structure to deliver multiple performance attributes simultaneously while maintaining structural coherence
3Reliability
If basis weight is reduced in certain regions, then absorbency is improved, but transparency increases (visual aesthetics deteriorate)
Solution Approach 1:
The second region with lower basis weight is strategically positioned to provide absorbency where needed, while the first and third regions with higher basis weight are positioned to provide opacity and visual aesthetics, creating a balanced overall appearance and performance
Data Source
Figure 1
Figure 2A~2B
Figure 3A
AI summary
Fibrous structures containing filaments and solid additives, and more particularly to fibrous structures containing filaments and solid additives wherein the fibrous structure has three or more regions that exhibit different characteristics and/or properties and methods for making same, are provided.