Pet Absorbent Sheet with Low L* Colored Area
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Solution Overview
Problem
Existing absorbent sheets for pets fail to effectively conceal the visual trace of pet excreta, leading to user discomfort and frequent replacement despite maintained deodorant effects.
Innovation Solution
An absorbent sheet design featuring a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent core with a colored area covered by the top sheet, and aroma chemicals in cyclodextrin, providing a low L*value and controlled release of fragrance to conceal excreta traces and extend usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a conventional absorbent sheet is used, then the deodorant effect is maintained, but the visual trace of excreta remains visible causing user discomfort
Solution Approach 1:
The top sheet incorporates a colored area with an L* value of 50 or less in the L*a*b* color system, creating a dark visual appearance that conceals excreta traces. This color change principle directly addresses the visibility problem while maintaining the sheet's functional properties.
Solution Approach 2:
The invention combines multiple materials with different properties: a liquid-permeable top sheet material, a liquid-impermeable back sheet material, and an absorbent core material. This composite structure allows the top sheet to be visually opaque for concealment while remaining functionally permeable for absorption.
2Object-affected harmful factors
If the top sheet is made more opaque to conceal traces, then visual recognition is reduced, but light transmittance decreases affecting absorption performance
Solution Approach 1:
The top sheet's light transmittance is precisely controlled within the range of 40-80%, and the colored area's L* value is set to 50 or less. These parameter optimizations balance visual concealment with sufficient light transmission to maintain the sheet's functional performance for liquid absorption.
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 solution effectively conceals excreta traces, reduces the urge to replace the sheet, and maintains deodorant and fragrance effects for a longer duration by controlling the release of aroma chemicals and enhancing water-holding capacity, preventing microbial breeding and odor diffusion.
Implementation Method 1
an absorbent core provided between the top sheet and the back sheet
Implementation Method 2
an absorbent core provided between the top sheet and the back sheet
Implementation Method 3
a liquid-permeable top sheet
Implementation Method 4
a liquid-impermeable back sheet
Implementation Method 5
An L*value of the colored area in an L*a*b*color system is 50 or less
Implementation Method 6
an aroma chemical provided on a top sheet side relative to the absorbent core
Implementation Method 7
an aroma chemical provided on a top sheet side relative to the absorbent core
Data Source
AI summary
It is possible to provide an absorbent sheet for pets capable of making a trace of excreta of a pet difficult to be visually recognized. The absorbent sheet for pets comprising: a liquid-permeable top sheet; a liquid-impermeable back sheet; an absorbent core provided between the top sheet and the back sheet; a colored area covered with the top sheet and visually recognizable from the top sheet side; and an aroma chemical provided on the top sheet side relative to the absorbent core. L*value of the colored area in an L*a*b*color system is 50 or less. A total light transmittance of the top sheet is in a range of 40 to 80%.