Folding Box Light Protection Double Wall Structure

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Solution Overview

Problem

Existing folding boxes for light-sensitive materials allow excessive light penetration and may unintentionally open, compromising the protection of these materials.

Innovation Solution

A folding box design featuring a double wall structure with a light protection wall and guide elements that prevent accidental opening, combined with a latching mechanism to enhance light protection and mechanical integrity, while optimizing production efficiency by minimizing the extent of the light protection panel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a simple single-wall folding box is used, then manufacturing is simple and material usage is low, but light protection is insufficient and mechanical integrity is weak

Engineering Contradiction:
Improvelight penetrationVSAvoidwall structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The box wall is segmented into multiple panels (first, second, third, fourth panels) separated by fold lines, creating a double-wall structure that provides both light protection and mechanical integrity while maintaining foldability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The box transitions from a flat two-dimensional layout to a three-dimensional folded structure with vertical walls, adding spatial dimensionality that enables light blocking while preserving the flat packaging state for efficient storage and transport

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the box is designed to be easily openable, then ease of operation is improved, but the box may unintentionally open due to mechanical stress

Engineering Contradiction:
Improvelid openingVSAvoidaccidental opening
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The tear line is pre-positioned to extend from the first panel through the second panel to the third panel, abutting the central horizontal fold line in the fourth panel, enabling controlled opening while the guide elements are pre-configured to prevent unintended opening

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Guide elements are introduced as intermediary components between the lid and box body, providing a latching function that prevents accidental opening while allowing intentional opening through the tear line mechanism

Inventive Principle:
Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If the light protection panel extends to the lower horizontal fold line, then light protection is maximized, but material usage increases

Engineering Contradiction:
Improvelight exposure to contentsVSAvoidmaterial consumption
Core Design Contradiction:
Object-affected harmful factorsVSLoss of substance

Solution Approach 1:

The sixth panel extends partially beyond the horizontal tear line to provide sufficient light protection for the contents, avoiding the need to extend to the lower horizontal fold line and thus optimizing material usage while maintaining adequate protection

Inventive Principle:
Principle #16Partial or excessive action

4Reliability

If guide elements are added to prevent accidental opening, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improvelatching functionVSAvoidpanel and element structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The guide elements serve multiple functions: they provide the latching function to prevent accidental opening, guide the lid during opening and closing movements, and work in conjunction with the tear line system, reducing the need for separate components

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3450341B1Folding box with light protection
Publication Date: 2020.04.15 HENKEL KGAA
  • EP3450341B1 patent drawingFigure 1

AI summary

The invention relates to a folding box 9 made of a one-piece, flat base body 8 in its initial state, which in a folded state defines an inner pocket for receiving removable, light-sensitive wipes, comprising at least five panels 1, 2, 3, 4, 5 which are laterally separated from one another by longitudinal fold lines 10, 11, 12, 13, wherein the first, third and fifth panels 1, 3, 5 have essentially the same width, and the second and fourth panels 2, 4 have essentially the same width, and wherein upper and lower flaps 16, 17 on the first to fourth panels 1, 2, 3, 4 are hinged to an upper and lower horizontal fold line 18, 19, respectively, such that the upper and lower flaps 16, 17lower walls can form, wherein a tear line 20 leads from the first panel 1 through the second panel 2 to the third panel 3 and adjoins a central horizontal fold line 22 in the fourth panel 4, to provide a tearable hinged lid 23, wherein the at least five panels 1, 2, 3, 4, 5 are at least seven panels 1, 2, 3, 4, 5, 6, 7, wherein the sixth panel 6 has substantially the width of the second panel 2, and the seventh panel 7 has substantially the same or a lesser width than the fifth panel 5, such that the panels 1, 2, 3, 4, 5, 6, 7 can be folded spirally into the folded state of the folding box 9 along the longitudinal fold lines 10, 11, 12, 13, 14, 15 separating them. are.