Blister Package Corner Gap Structure to Reduce Injury Risk
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Solution Overview
Problem
Existing blister packages with triangular shapes form sharp corner portions that can cause stimulation and potential injury when accidentally hit, particularly in cases involving infants or toddlers.
Innovation Solution
A package design featuring a non-welded region between resin sheets at the corner portions, with separation lines that intersect to form gaps, reducing the rigidity and softening the corners to minimize stimulation and injury risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the package is divided into triangular sections with welded regions, then the structural integrity and sealing are improved, but sharp corner portions are formed that cause stimulation and potential injury
Solution Approach 1:
The patent applies local quality by creating a non-welded region specifically at the corner portion where the first and second separation lines intersect, while maintaining welded regions at other areas for structural integrity. This localized modification softens the corner without compromising the overall package strength and sealing.
Solution Approach 2:
The patent segments the welded region by introducing separation lines that divide the package into multiple sections. The intersection of these separation lines creates a non-welded corner region, effectively segmenting the welded area to allow for corner softening while preserving structural integrity in other areas.
2Object-affected harmful factors
If the corner portion is softened by providing a non-welded region, then the stimulation and injury risk are reduced, but the sealing and structural integrity may be compromised
Solution Approach 1:
The non-welded region is localized only to the corner portion where separation lines intersect, while the rest of the package maintains welded regions for sealing. This localized approach ensures that sealing integrity is preserved in critical areas while the corner remains soft to prevent injury.
Solution Approach 2:
The separation lines are pre-formed in the resin sheets before final assembly, creating the non-welded corner region in advance. This preliminary action ensures that the corner softening is built into the package structure from the beginning, maintaining sealing integrity while preventing injury risks.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively suppresses corner stimulation and reduces the likelihood of injuries by ensuring the corners have suitable softness and are less likely to cause harm, while maintaining ease of use and preventing accidental ingestion.
Implementation Method 1
a second resin sheet covering the accommodating portion and having a welded region that faces the first resin sheet and is welded to the first resin sheet around the accommodating portion
Data Source
AI summary
Provided is a package that suppresses stimulation of a corner portion formed after being individually divided. The package includes a first resin sheet including an accommodating portion that is a first recess in which an accommodated object is accommodated, and a second resin sheet covering the accommodating portion and having a welded region that faces the first resin sheet and is welded to the first resin sheet around the accommodating portion. At a corner portion in which a first side in a first direction appearing on a side surface of the welded region and a second side in a second direction appearing on the side surface of the welded region intersect, a non-welded region where the first resin sheet and the second resin sheet are not welded is provided. In the non-welded region, a gap is provided between a corner portion of the first resin sheet and a corner portion of the second resin sheet.