Washable Diaper Assembly With Removable Liner for Sanitary Reuse

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Solution Overview

Problem

Disposable diapers are costly and environmentally harmful, while traditional cloth diapers are inconvenient and present sanitation issues due to inadequate construction and disposal challenges.

Innovation Solution

A durable washable diaper design featuring a liquid-proof outer article and inner liner system, where the inner liner captures non-liquid waste and is easily removable for sanitary disposal, with a fastening mechanism and absorbent pad for enhanced absorption and containment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If disposable diapers are used, then convenience and absorption effectiveness are improved, but cost and environmental harm increase

Engineering Contradiction:
ImproveconvenienceVSAvoidenvironmental harm
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The diaper is divided into three main segments: an outer shell (reusable), an inner liner system (washable), and absorbent pads (disposable or reusable). This segmentation allows different parts to serve different functions - the outer shell provides leak protection, the inner liner manages waste, and the absorbent pads handle moisture, enabling flexible disposal and washing options that reduce environmental impact while maintaining convenience

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements a system where the outer shell and inner liner can be recovered, washed, and reused multiple times, while only the absorbent pads need to be discarded. This selective discarding approach recovers durable components for repeated use, significantly reducing waste compared to traditional disposable diapers while maintaining the convenience of single-use absorption elements

Inventive Principle:
Principle #34Discarding and recovering

2Duration of action of stationary object

If traditional cloth diapers are used, then reusability and cost savings are improved, but sanitation conditions and leakage protection worsen

Engineering Contradiction:
ImprovereusabilityVSAvoidsanitation issues
Core Design Contradiction:
Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The inner liner system is segmented into a liquid-impermeable barrier layer and an absorbent layer, allowing it to be detached and washed separately from the outer shell. This segmentation enables thorough sanitation of the reusable components while maintaining leak protection through the barrier layer, solving the sanitation and leakage problems of traditional cloth diapers

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The inner liner acts as an intermediary between the wearer's skin and the outer shell, capturing and containing waste and moisture. This intermediary layer can be easily removed, washed, and sanitized, providing a卫生 barrier that protects the reusable outer shell while ensuring proper waste management, thereby improving sanitation conditions

Inventive Principle:
Principle #24Intermediary (Mediator)

3Quantity of substance

If cloth diapers are made bulky to improve absorption, then absorption capacity is improved, but convenience and ease of operation worsen

Engineering Contradiction:
Improveabsorption capacityVSAvoidconvenience
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The absorption function is segmented into separate absorbent pads that can be inserted into or attached to the inner liner system. This allows the absorption capacity to be adjusted by adding or removing pads without making the entire diaper bulky. The pads can be compressed or folded to fit neatly, maintaining convenience while providing sufficient absorption capacity when needed

Inventive Principle:
Principle #1Segmentation

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 washable diaper provides convenience and effectiveness similar to disposable diapers while reducing environmental impact and saving money by being reusable, with improved sanitary conditions and easy waste disposal.

Implementation Method 1

an outer article configured with a first end including a first substantially liquid impervious compartment, a second end including a second substantially liquid impervious compartment

Methodology Applied
Scientific EffectLiquid impervious barrier:

Implementation Method 2

the substantially liquid impervious member is sewn over the perimeter of the outer article by substantially non-wicking thread

Methodology Applied
Scientific EffectNon-wicking property:

Implementation Method 3

The liquid pervious liner of the inner liner system, captures any non-liquid waste, and is easily removable in its entirety and disposed through a regular toilet

Methodology Applied
Scientific EffectLiquid pervious property:

Data Source

PatentUS20130023846A1Washable diaper and methods of assembly and manufacture
Publication Date: 2013.01.24 BECK SANDRA C
  • US20130023846A1 patent drawing
  • US20130023846A1 patent drawing
  • US20130023846A1 patent drawing

AI summary

A washable diaper having an outer article and an inner liner system detachably coupled to the outer article is disclosed. The inner liner system may include front and back ends and a liner member about a washable article with an absorbent pad positioned therein. The outer article may include front and back ends with opposing side edges extending therebetween. The outer article may include an inner surface with substantially liquid impervious compartments at the front and back ends. The outer article and the inner article may include fastening mechanisms configured to removably couple the inner liner system to the outer article such that at least the front and back ends of the washable article of the inner liner system are substantially secured within the front and back liquid impervious pockets, respectively, when the outer article and inner liner system are assembled.