Urine-Blocking Absorbing Pad With Waterproof Layer

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Solution Overview

Problem

During diaper changes, especially with male babies, there is a risk of unexpected urine release, leading to mess and inefficiency, as both the parent and the new diaper can get wet.

Innovation Solution

A urine-blocking and absorbing pad with a waterproof layer, an absorbing layer made of sodium polyacrylate, and a fluff layer for comfort, designed to cover the pelvic area of a child during diaper changes, preventing urine from escaping and ensuring efficient cleanup.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional diaper changing process is used without additional protective measures, then the changing process is simple and quick, but urine may spray and wet the parent, child, and new diaper, creating mess and requiring cleanup

Engineering Contradiction:

Improveprevention of urine sprayVSAvoidstructure of changing process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a protective pad as an intermediary component between the child's pelvic area and the parent/diaper during changing. This pad includes a waterproof outer layer to block urine spray, an absorbing layer to capture urine, and a soft inner layer for comfort, thereby preventing urine from reaching the parent and new diaper while maintaining a relatively simple overall system

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The protective pad is placed on the child's pelvic area before the diaper changing process begins. This preliminary placement ensures that if urine spray occurs during the changing process, the pad is already in position to block and absorb the urine, preventing mess before it happens

Inventive Principle:

Principle #10Preliminary action

2Reliability

If a protective pad is added to prevent urine spray, then urine blocking and absorption is improved, but the complexity of the diaper changing system increases

Engineering Contradiction:

Improveurine blocking capabilityVSAvoidnumber of layers and materials

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The protective pad is segmented into three distinct functional layers: a waterproof outer layer for blocking urine spray, an absorbing layer containing superabsorbent polymers for capturing urine, and a soft inner layer for comfort against the child's skin. This segmentation allows each layer to perform its specific function efficiently while keeping the overall design manageable

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs composite materials in the protective pad construction, combining waterproof materials (such as plastic or coated fabric), superabsorbent polymers (sodium polyacrylate), and soft fibrous materials (cotton or synthetic fibers). This composite approach achieves superior urine blocking and absorption performance while maintaining a compact and manageable structure

Inventive Principle:

Principle #40Composite materials

3Reliability

If a multi-layer absorbing pad is used, then urine absorption and blocking performance is improved, but the time required to apply and remove the pad increases

Engineering Contradiction:

Improveurine absorption efficiencyVSAvoidtime for pad application and removal

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The protective pad is designed as a disposable item that is applied before diaper changing and discarded after use. This eliminates the time-consuming process of cleaning and reusing the pad, and the three-layer structure ensures high urine absorption efficiency during the brief period it is in use, making the temporary time investment worthwhile

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 pad effectively absorbs and blocks urine, protecting the parent and the new diaper from unexpected urine releases, thereby reducing the time and effort required for diaper changes and minimizing waste.

Implementation Method 1

an absorbing layer disposed between the waterproof layer and the fluff layer to absorb the urine

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

The absorbing layer may include sodium polyacrylate

Methodology Applied

Scientific EffectAdsorption: Adsorption

Implementation Method 3

a waterproof layer to prevent urine from exiting the urine-blocking and absorbing pad

Methodology Applied

Scientific EffectHydrophobic effect: Hydrophobe

Data Source

PatentUS20250195285A1Urine-blocking and absorbing pad for a child

Publication Date: 2025.06.19 SMITH AMY

AI summary

A urine-blocking and absorbing pad to cover a pelvic area of a child during a diaper-change, the urine-blocking and absorbing pad including a waterproof layer to prevent urine from exiting the urine-blocking and absorbing pad, a fluff layer to contact the pelvic area of the child, and an absorbing layer disposed between the waterproof layer and the fluff layer to absorb the urine.