Child-Resistant Packaging With Frangible Closure Flaps
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Solution Overview
Problem
Conventional child-resistant pharmaceutical packaging, such as blister packs, lack effective security measures to prevent accidental access by children and tampering.
Innovation Solution
A packaging design featuring a blister carrier enclosed by a cover panel and closure flaps with frangible connections, requiring deliberate action to break the connections for access, providing enhanced child resistance and tamper evidence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional blister packs are used, then ease of operation is improved, but child resistance and tamper evidence are insufficient
Solution Approach 1:
The closure flap is divided into multiple portions (first portion fixedly adhered to cover panel, second portion releasably attached to first portion, third portion releasably attached to end panel). This segmentation creates a multi-stage opening process that requires deliberate action, providing both child resistance and tamper evidence while remaining operable by adults who can follow the opening sequence.
Solution Approach 2:
The package is designed with pre-formed frangible connections and adhesive bonds that are prepared in advance during manufacturing. The closure flap portions are pre-positioned and pre-adhered to create a controlled opening mechanism, eliminating the need for complex user actions during opening while maintaining security.
2Reliability
If simple closure flaps are used, then ease of operation is improved, but tamper evidence is insufficient
Solution Approach 1:
The closure flap is segmented into multiple portions with specific attachment relationships (first portion fixedly adhered to cover panel, second portion releasably attached to first portion, third portion releasably attached to end panel). This segmentation creates visible fracture lines and separation points that provide clear tamper evidence when the package is opened, while the modular structure manages complexity through standardized connection types.
Solution Approach 2:
The frangible connections are designed to create visible physical changes (fracture lines, separation, deformation) that serve as tamper evidence. These visual changes indicate whether the package has been opened or tampered with, providing reliability without requiring complex electronic or mechanical indicators.
Data Source
AI summary
A package (100) comprises a first wall panel (4), a second wall panel (6) attached to one side of the first wall panel (4), a third wall panel (8) attached to the first side wall panel (4) on the side of the first wall panel (4) opposite the second side wall panel (6), a blister carrier (10) attached to the side of the second wall panel (6) opposite the first wall panel (4), and folded over the first wall panel (4), a cover panel (12) attached to the side of the third wall panel (8) opposite the first wall panel (4) and folded over the blister carrier (10), first and second end panels (14, 16) attached to opposed ends of the first wall panel (4) and first and second closure flaps (18, 20) attached to the first and second end panels (14, 16) on the side opposite the first wall panel (4), and folded over the exterior surface of the cover panel (12). Each closure flap (18, 20) comprises a first portion (40) fixedly adhered to the exterior surface of the cover panel (12) and releasably attached to the adjacent end panel (14, 16) through a first frangible connection (44), and a second portion (42) releasably attached to the exterior surface of the cover panel (12) through a second frangible connection (48) to the first portion (40) of the closure flap (18, 20).