Pet Absorbent Sheet Recess for Functional Material Retention

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Solution Overview

Problem

Existing absorbent sheets for pets suffer from functional material leakage when scratched, leading to reduced effectiveness over time due to the deterioration of fragrance, deodorizing, and sterilizing components.

Innovation Solution

An absorbent sheet design featuring a recessed area for the functional material closer to the absorber, with a water-resistant agent and colorant, which suppresses material outflow and aids in controlling excreta diffusion, allowing for longer use and easier identification of wet regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the functional material is provided on the topsheet or sheet adjacent to the topsheet, then the functional material is easily accessible and effective, but the functional material flows out when the pet scratches the surface

Engineering Contradiction:

Improvefunctional material retentionVSAvoidfunctional material accessibility

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The functional material is nested within a recess formed in the sheet body, creating a protective cavity that prevents the material from being exposed to the surface where scratches occur, while still allowing it to contact excreta for functionality

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The recess creates a localized area with different structural properties (recessed depth) compared to the surrounding sheet surface, concentrating the functional material in a protected zone that balances accessibility and protection

Inventive Principle:

Principle #3Local quality

2Duration of action of moving object

If the functional material is provided on the surface, then it provides immediate function, but the function deteriorates over time due to material outflow from scratches

Engineering Contradiction:

Improveusage durationVSAvoidfunctional material retention

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The recess structure nests the functional material in a protected position, preventing scratch-induced outflow and maintaining material retention throughout extended usage periods

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The recess acts as a pre-established protective barrier that cushions the functional material against potential scratch damage before scratches occur, ensuring long-term functional reliability

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 prevents functional material leakage and maintains absorbent sheet functionality over multiple uses, while providing a visual cue for replacing the sheet when wet regions are identified.

Implementation Method 1

a recess that is recessed in a direction from the topsheet toward the backsheet. The functional material is provided at a position of the recess

Methodology Applied

Scientific EffectPhysical containment through recessed structure: Physical Containment

Implementation Method 2

a water-resistant agent and colorant, which suppresses material outflow and aids in controlling excreta diffusion

Methodology Applied

Scientific EffectHydrophobic effect: Hydrophobe

Data Source

PatentUS11582944B2Absorbent sheet for pets

Publication Date: 2023.02.21 UNI CHARM CORP

AI summary

the absorbent sheet for pets which can suppress the outflow of a functional material is provided. An absorbent sheet (10) for pets includes a topsheet (12), a backsheet (14), an absorber (20) provided between the topsheet and the backsheet, a functional (40) material, and a recess (50)that is recessed in a direction from the topsheet toward the backsheet. The functional material (40) is provided at a position of the recess (50).