Pressure-Resistant Core Corn Dressing for Shape Stability

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Solution Overview

Problem

Conventional corn dressings fail to effectively relieve pressure on corns and maintain their shape under constant pressure, leading to inadequate pressure distribution and potential pressure marks due to the flow of adhesive materials.

Innovation Solution

A corn dressing with a pressure-resistant core embedded in an adhesive layer, featuring a central hole or depression to accommodate the corn, providing a cushioning effect and maintaining shape under pressure, utilizing elastomers or elastic materials with specific hardness and tan(δ) properties, and a moldable backing layer for improved fit and comfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If adhesive materials are used in conventional corn dressings, then the dressing can be applied to the skin, but the adhesive flows under constant pressure leading to inadequate pressure distribution and potential pressure marks

Engineering Contradiction:
Improvepressure distributionVSAvoidshape maintenance
Core Design Contradiction:
StrengthVSStability of the object's composition

Solution Approach 1:

The dressing is segmented into a central portion with a hole or depression and a border portion surrounding it. This segmentation allows the border portion to provide structural support and maintain shape under pressure, while the central portion with the hole accommodates the corn and distributes pressure away from it, preventing pressure marks.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The dressing has different properties in different regions: the border portion is designed to be pressure-resistant and maintain its shape, while the central portion with the hole or depression is designed to accommodate the corn. This local differentiation ensures that pressure is distributed evenly across the border while the corn area remains pressure-free.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If the dressing material is made soft and moldable for comfort, then it conforms to body contours, but it cannot maintain its shape under constant pressure

Engineering Contradiction:
Improveconformity to contoursVSAvoidshape stability under pressure
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The dressing incorporates materials with different properties in different regions. The border portion uses materials that maintain their shape under pressure, while still being able to conform to the general contours of the body. This local quality differentiation resolves the contradiction between softness for comfort and rigidity for shape maintenance.

Inventive Principle:
Principle #3Local quality

3Object-affected harmful factors

If the dressing is designed with a central hole or depression to accommodate the corn, then pressure is relieved from the corn, but the structural integrity and pressure distribution capability is compromised

Engineering Contradiction:
Improvepressure on cornVSAvoidpressure distribution
Core Design Contradiction:
Object-affected harmful factorsVSStrength

Solution Approach 1:

The dressing is divided into a central portion containing the hole or depression and a border portion that provides structural support. This segmentation ensures that the hole serves its pressure-relieving function while the border maintains the dressing's overall structural integrity and pressure distribution capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The dressing uses composite materials with different properties in different regions. The border portion employs materials with higher structural integrity to maintain shape and distribute pressure, while the central portion with the hole uses materials optimized for pressure relief. This composite approach resolves the contradiction between pressure relief and structural integrity.

Inventive Principle:
Principle #40Composite materials

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 corn dressing effectively relieves pressure on corns by maintaining its shape and distributing pressure evenly, reducing the risk of pressure marks and ensuring long-term protection, as demonstrated by maintaining optimal pressure distribution for both 15 minutes and 24 hours under constant pressure tests.

Implementation Method 1

The core material may have a tan(δ) of less than 0.8 at 25°C and 1 Hz in order to avoid cold flowing. The material may be elastic in order to be capable of conforming to the contours of the body

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The adhesive layer having a skin-facing surface and a non-skin-facing surface. The non-skin-facing surface being provided with a backing layer

Methodology Applied
Scientific EffectAdhesion: Adhesive

Data Source

PatentEP3302383B1A corn dressing
Publication Date: 2019.09.11 COLOPLAST AS
  • EP3302383B1 patent drawingFigure 1~2
  • EP3302383B1 patent drawingFigure 3~4
  • EP3302383B1 patent drawingFigure 5

AI summary

A corn dressing for application to a corn. The dressing comprises an adhesive layer having a skin-facing surface and a non-skin-facing surface. The non-skin-facing surface is provided with a backing layer and the dressing comprises a central portion and a border portion surrounding the central portion and a central hole or depression. The central portion comprises a core surrounding the central hole or depression. The core is pressure resistant and is embedded in the adhesive layer.