Skin-friendly absorbent structure with oxygen and pH regulation

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Solution Overview

Problem

Personal hygiene products like sanitary napkins and diapers often lead to stuffiness and bacterial growth due to high humidity and temperature, and existing oxygen-generating technologies using strong alkalinity can irritate the skin.

Innovation Solution

A skin-friendly absorbent structure with evenly dispersed oxygen-providing units, such as metal peroxides, and pH-regulating units, like citric acid, maintaining a pH between 4 and 7 to inhibit anaerobic bacteria growth without harming the skin.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If peroxides and superoxides are used to produce oxygen in personal hygiene products, then oxygen supply is improved, but skin irritation and harm occur due to strong alkalinity

Engineering Contradiction:

Improveoxygen contentVSAvoidskin irritation

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent changes the pH parameter from strongly alkaline (prior art) to weakly alkaline or neutral (pH 7-9), eliminating skin irritation while maintaining oxygen generation capability through controlled decomposition of peroxides and superoxides at adjusted pH levels

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces alkaline-earth metal salts as intermediary substances that moderate the alkalinity of peroxides and superoxides, creating a buffer system that generates oxygen while maintaining skin-friendly pH levels, thus mediating between oxygen production and skin safety

Inventive Principle:

Principle #24Intermediary (Mediator)

2Quantity of substance

If personal hygiene products are designed with leak-proof structure and closeness to skin, then absorption capability is improved, but stuffiness and discomfort occur due to enclosed subenvironment

Engineering Contradiction:

Improvefluid absorptionVSAvoidstuffiness and discomfort

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent uses peroxides and superoxides as strong oxidants that decompose to release oxygen in the enclosed subenvironment, increasing oxygen concentration to prevent anaerobic bacterial growth and eliminate stuffiness while maintaining the leak-proof structure

Inventive Principle:

Principle #38Strong oxidants (Accelerated oxidation)

Solution Approach 2:

The patent enables the hygiene product to self-regulate the subenvironment by incorporating oxygen-generating materials that automatically decompose in response to moisture from absorbed fluids, providing oxygen on-demand without external intervention to prevent discomfort and bacterial growth

Inventive Principle:

Principle #25Self-service

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 structure increases oxygen levels in the subenvironment, inhibiting bacterial growth while maintaining a skin-friendly pH, reducing discomfort and the risk of infection.

Implementation Method 1

metal peroxides...release oxygen after absorbing liquids

Methodology Applied

Scientific EffectDecomposition reaction: Decomposition (biological)

Implementation Method 2

pH-regulating units, like citric acid, maintaining a pH between 4 and 7

Methodology Applied

Scientific EffectpH regulation:

Implementation Method 3

absorbing liquids with the pH remaining skin-friendly

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentUS10695456B2Skin-friendly absorbent structure for providing oxygen

Publication Date: 2020.06.30 TO2M CORP

AI summary

A skin-friendly absorbent structure providing oxygen, comprising a absorbing layer and skin-friendly and oxygen-providing units, the skin-friendly and oxygen-providing unit being evenly dispersed in partial or entire scope of the absorbing layer wherein the skin-friendly and oxygen-providing unit comprises oxygen providing units and pH regulating units; and the pH of the skin-friendly absorbent structure is between 4 and 7 after absorbing liquids.