Hollow Transparent Resin Dummy for Absorbent Article Testing

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Solution Overview

Problem

Conventional dummies for testing body-fluid-absorbent articles are solid and made of silicon rubber, making them heavy and difficult to observe fluid absorption and diffusion due to optical refraction, which hinders clear visual monitoring of these processes.

Innovation Solution

A hollow, transparent resin molded dummy with a wall thickness of 3 to 15 mm, featuring through holes in body fluid discharge areas and protrusions to prevent cracking, allowing clear visualization of fluid absorption and diffusion through the absorbent article.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the dummy is made solid inside with silicon rubber, then the structural strength and durability are improved, but the weight increases and optical observation of fluid absorption becomes difficult

Engineering Contradiction:

Improvestructural strengthVSAvoiddummy weight

Core Design Contradiction:

StrengthVSWeight of stationary object

Solution Approach 1:

The dummy is divided into solid outer shell and hollow interior space, separating the structural function (outer shell) from the observation function (hollow interior). This segmentation allows the outer shell to provide strength while the hollow interior reduces weight and enables optical observation of fluid absorption processes.

Inventive Principle:

Principle #1Segmentation

2Strength

If the dummy is made solid inside with silicon rubber, then the structural strength is improved, but the optical refraction increases making visual observation difficult

Engineering Contradiction:

Improvestructural strengthVSAvoidvisual observation difficulty

Core Design Contradiction:

StrengthVSDifficulty of detecting and measuring

Solution Approach 1:

The dummy structure is segmented into a solid transparent outer shell and a hollow interior. The outer shell maintains structural strength while being transparent to allow optical observation. The hollow interior eliminates refraction issues that would occur with solid filling materials.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The dummy shell is made transparent or translucent, changing its optical properties from opaque silicon rubber to a material that allows light transmission. This enables clear visual observation of fluid absorption and diffusion processes within the hollow interior while maintaining structural integrity.

Inventive Principle:

Principle #32Color changes

3Strength

If the wall thickness is increased to prevent cracking, then the structural strength is improved, but the transparency and visual observation capability deteriorate

Engineering Contradiction:

Improvecrack resistanceVSAvoidtransparency quality

Core Design Contradiction:

StrengthVSDifficulty of detecting and measuring

Solution Approach 1:

The wall thickness parameter is optimized to a specific range (3-15 mm) that balances structural strength and optical transparency. This parameter change ensures the shell is thick enough to resist cracking under test conditions while remaining thin enough to maintain clarity for visual observation of fluid absorption.

Inventive Principle:

Principle #35Parameter changes

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

Enables clear and effective capture of fluid absorption and diffusion phenomena in body-fluid-absorbent articles, facilitating better testing and analysis of their performance.

Implementation Method 1

the dummy is a transparent resin molded body

Methodology Applied

Scientific EffectTransparency:

Implementation Method 2

supplying a simulated body fluid from inside of the hollow

Methodology Applied

Scientific EffectFluid flow through hollow structure:

Implementation Method 3

capturing at least one phenomenon of absorption and diffusion, in the body-fluid-absorbent article, of the simulated body fluid

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 4

capturing at least one phenomenon of absorption and diffusion, in the body-fluid-absorbent article, of the simulated body fluid

Methodology Applied

Scientific EffectDiffusion: Diffusion

Data Source

PatentUS20230410689A1Fitting dummy for testing on body-fluid-absorbent articles and test method using the same

Publication Date: 2023.12.21 DAIO PAPER CORP

AI summary

A fitting dummy for testing on a body-fluid-absorbent article is disclosed, which, with an absorbent article fit on the dummy, allows clear capture of absorption, diffusion, or the like, of body fluid. The dummy has the external shape representing the external shape of a human body including at least the torso and a pair of thighs, the dummy is hollow in at least the torso and the thighs, the wall thickness t between the exterior surface and the corresponding interior surface of the dummy is 3 to 15 mm except for a body fluid discharge area, the body fluid discharge area is provided with through holes, communicating with the hollow and the outside, and the dummy is a transparent resin molded body.