Textured Fibrous Structure with Enhanced Surface Height for Cleaning
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Solution Overview
Problem
Existing textured fibrous structures, such as spunlaced and airlaid products, exhibit lower than desirable surface height properties, leading to less effective bowel movement cleaning and removal.
Innovation Solution
Creating textured fibrous structures with deformations such as protrusions and depressions that increase surface height properties, specifically achieving average absolute surface height values greater than 250 μm, root mean square average surface height values greater than 300 μm, and height difference surface height values greater than 825 μm, using processes like thermal bonding and patterned rolls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If patterned thermal bonding rolls are used to bond filaments together, then structural integrity is improved, but surface height properties remain insufficient
Solution Approach 1:
The patent applies different surface characteristics to different regions of the bonding roll. The bonding roll includes both bonding patterns for structural integrity and textured surfaces with specific height properties (Sa > 250 μm, Sq > 300 μm, Sk > 825 μm) for surface texture. This allows simultaneous achievement of structural strength and desired surface height characteristics through localized functional zones on the same roll.
2Ease of manufacture
If conventional textured surfaces are used, then manufacturing simplicity is maintained, but surface height properties are lower than desired
Solution Approach 1:
The patent modifies the surface height parameters of the bonding roll to achieve Sa > 250 μm, Sq > 300 μm, and Sk > 825 μm. This involves changing the geometric parameters of the textured surface (protrusion height, depression depth, pattern dimensions) while maintaining the conventional thermal bonding process, thus achieving enhanced surface properties without fundamentally altering the manufacturing approach.
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 enhanced surface height properties improve actual and perceived bowel movement cleaning efficacy by providing a more effective cleaning experience.
Implementation Method 1
manufacturers of known filament-containing fibrous structures have utilized patterned thermal bonding rolls, such as point bond patterns, to bond its filaments and materials together
Data Source
AI summary
Textured fibrous structures, and more particularly textured fibrous structures having a plurality of deformations such that the textures fibrous structures exhibit novel surface height properties compared to known fibrous structures, and methods for making such textured fibrous structures.