Reclosable Battery Package With Sliding Pouch Retention

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Solution Overview

Problem

Existing battery packages are difficult to open without tools, prone to unintentional opening during transport, and allow unneeded batteries to fall out, leading to clutter and potential damage.

Innovation Solution

A reclosable battery package design featuring slidable pouches with angled perforations and locking mechanisms that allow easy access and re-closure, preventing accidental opening during handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If perforations are added to make the package easier to open, then ease of operation is improved, but reliability deteriorates due to unintentional opening during transportation

Engineering Contradiction:
Improveease of openingVSAvoidresistance to unintentional opening
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The package transitions from a static sealed state to a dynamic opening state through a controlled tearing motion. The user must actively pull the package apart along the perforation line, creating a deliberate mechanical action that prevents accidental opening while maintaining ease of use.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The package is divided into separable sections with perforation lines that guide the tearing action. This segmentation allows the package to be easily opened along predetermined lines while the remaining portions stay intact and securely sealed, preventing unintentional opening of the entire package.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the package is opened to access batteries, then ease of operation is improved, but loss of substance worsens as unneeded batteries fall out

Engineering Contradiction:
Improveaccess to batteriesVSAvoidbatteries falling out
Core Design Contradiction:
Ease of operationVSLoss of substance

Solution Approach 1:

The package opens into two separate sections, allowing the user to access only the needed batteries while the other section remains sealed and contains the unneeded batteries. This segmentation prevents batteries from falling out entirely as the package structure maintains containment in both sections.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The perforation line acts as an intermediary that allows controlled access to batteries. By tearing along this line, the user creates a deliberate opening mechanism that prevents uncontrolled battery release, enabling selective removal of needed batteries while keeping unneeded ones contained.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Manufacturing precision

If a utensil is required to open the package, then manufacturing precision is improved with sealed packaging, but ease of operation deteriorates when utensils are not available

Engineering Contradiction:
Improvesealed packagingVSAvoidopening without utensil
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The package incorporates pre-formed perforation lines that create weak points designed for manual tearing. This segmentation allows the package to maintain sealed integrity during manufacturing and transport while enabling easy manual opening without requiring cutting utensils, resolving the contradiction between sealed packaging and ease of opening.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3487777B1Reclosable battery package, method of opening said package and method of reclosing said package
Publication Date: 2026.04.22 DURACELL US OPERATIONS INC
  • EP3487777B1 patent drawingFigure 1~4
  • EP3487777B1 patent drawingFigure 5~8
  • EP3487777B1 patent drawingFigure 9

AI summary

A reclosable battery package (10) includes a first panel (12) having a first removable portion (22) and a second panel (14) optionally having a second removable portion (26). A pouch (30) is disposed between the first panel (12) and the second panel (14). The first panel (12) and the second panel (14) are joined along perimeter edges (40, 42) and a pouch perimeter flange (32) is disposed between the first panel (12) and the second panel (14). The pouch (30) is slidably movable between the first panel (12) and the second panel (14) when the first removable portion (22) is removed from the first panel (12) to expose contents stored within the pouch (30).