Child-Resistant Blister Package with Peelable Tab Strip
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Solution Overview
Problem
Conventional blister packages lack child resistance and senior friendliness, failing to meet safety standards for pharmaceutical packaging as mandated by the Poison Prevention Packaging Act of 1970, and are not easily accessible for users with reduced dexterity or strength.
Innovation Solution
A child-resistant packaging system that includes a blister pack sealed between two panels with a tab strip and pull tab mechanism, requiring a sequence of coordinated motions to access items, incorporating tear-resistant layers for structural integrity and secure item retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional blister packages are used, then items can be easily removed, but child resistance is insufficient
Solution Approach 1:
The package is divided into multiple functional components: a blister tray with cells, a separate lid with gates, and a tab strip with pull tabs. This segmentation allows the lid to be removed first (exposing gates), then items to be accessed through gates requiring coordinated pressing and pulling actions, providing child resistance while maintaining ease of operation for seniors
Solution Approach 2:
The tab strip is pre-positioned to cover and secure the gates before use. The user must first peel back the tab strip to expose the gates, then perform the coordinated pressing-pulling sequence. This preliminary action adds an extra step that prevents children from easily accessing items while not significantly complicating the process for seniors
2Ease of operation
If conventional blister packages are used, then manufacturing is simple, but senior friendliness is insufficient
Solution Approach 1:
The gate acts as an intermediary mechanism between the blister cell and the external environment. It requires a specific coordinated motion (pressing the pull tab while pressing the blister) to open, providing a clear tactile feedback and visual indication of proper operation, which assists seniors with reduced dexterity
Solution Approach 2:
The package incorporates visual indicators such as color-coded tabs or gates that change appearance when opened, providing clear feedback to users. This visual feedback system helps seniors understand the package status and operation progress without requiring complex manipulation
3Reliability
If thin foil is used in conventional packages, then item access is easy, but child resistance is reduced
Solution Approach 1:
The package uses composite construction with a rigid blister tray, a separate lid material (foil, plastic, or paperboard), and a tab strip. This composite structure provides both child resistance through the rigid components and controlled access through the designed gate mechanism, eliminating the need for thin, easily punctured foil
4Ease of operation
If paperboard lids with gates are used, then item removal is assisted, but child resistance is insufficient
Solution Approach 1:
The gate is designed to be dynamically activated by the coordinated pressing-pulling motion. It transitions from a closed, secure state to an open state only when the correct sequence of actions is performed. This dynamic behavior provides child resistance while assisting seniors through clear tactile and visual feedback during the opening process
Data Source
AI summary
A package includes a blank having a face panel and a back panel. The face panel includes apertures and face tabs. The back panel includes gates that correspond with apertures, and tab strips that overlap the gates and are adjoined to back tabs. A blister pack is sealed between the face panel and the back panel whereby blisters align over gates and protrude through apertures, and tabs and form a composite pull tab. To remove an item from a blister, the pull tab is pressed out of the panels, the tab strip is peeled from the back panel, and pressure is applied to force the item through the backing sheet of the blister pack and the exposed gate.