Soap Package with Nested Pull-Out Cavity for Easy Removal

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Solution Overview

Problem

Current soap packaging designs do not allow for easy removal of soap from the package, often requiring users to shake the package to dispense the soap, which can lead to defects during transportation.

Innovation Solution

A soap package design featuring a cardboard box with finger hook parts that match with a narrow centered portion of the soap, allowing users to grasp and remove the soap easily without shaking, while maintaining structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the soap package dimensions are increased to allow easy removal of soap, then the ease of operation is improved, but the reliability deteriorates due to scratches and damage during transportation

Engineering Contradiction:
Improveease of soap removalVSAvoidprotection during transportation
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The box is segmented into an outer box and an inner cavity part that can be pulled out. The cavity part is divided into a base portion and a wall portion that forms a receiving structure. This segmentation allows the soap to be accessed through the pull-out cavity without increasing overall package size, resolving the contradiction between ease of operation and transportation protection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cavity part is nested within the outer box, with the cavity base portion located in the outer box and the cavity wall portion extending upward. The soap is nested within the cavity's receiving structure. This nested configuration enables easy soap removal through the pull-out mechanism while maintaining a compact overall size for safe transportation.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Device complexity

If a simple folding box structure is used, then the device complexity is reduced, but the ease of operation deteriorates as users must shake the package to remove soap

Engineering Contradiction:
Improvepackaging structure simplicityVSAvoidease of soap removal
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The cavity part is designed to be dynamically extractable from the outer box through a pull-out motion along the longitudinal axis. The cavity base portion can be pulled out from the outer box, and the cavity wall portion moves with it, creating a dynamic retrieval mechanism. This adds minimal complexity while dramatically improving ease of soap removal compared to static folding box designs.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The cavity part acts as an intermediary between the outer box and the soap. It provides a receiving structure that holds the soap and can be pulled out to access the soap without directly manipulating the outer box. This intermediary mechanism simplifies the overall structure while enabling easy soap removal.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4347424B1Soap package
Publication Date: 2026.01.21 PROCTER & GAMBLE CO
  • EP4347424B1 patent drawingFigure 1
  • EP4347424B1 patent drawingFigure 2
  • EP4347424B1 patent drawingFigure 3

AI summary

Described herein, a soap package comprising a carboard box for packaging a soap. The soap package includes a soap comprising a narrow centered portion.