Hinged Applicator Package for Full-Surface Dispensing
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Solution Overview
Problem
Existing dispensing packages with foam applicators suffer from a reduction in effective surface area when opened, limiting the efficiency of applying substances like fluids and pastes, as the applicator becomes non-perpendicular and only a portion is usable at a time.
Innovation Solution
A dispensing package design featuring a stiff sheet with a score and a flexible layer, where the applicator is attached by hinges to maintain a flat position, allowing the package to be easily opened with one hand and ensuring the applicator remains perpendicular, thus maintaining a larger effective surface area for application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the applicator is adhered along its entire side to the plastic backing layer, then the package structure is simple and easy to manufacture, but the effective surface area of the applicator is dramatically reduced when the package is opened
Solution Approach 1:
The applicator attachment is segmented into two regions: a first region adhered to the plastic backing layer and a second region not adhered to the plastic backing layer. This segmentation allows the applicator to maintain full surface area contact with the substance while still being securely attached to the package structure.
Solution Approach 2:
Different regions of the applicator have different attachment properties: the first region is adhered to provide structural support and connection, while the second region remains free to maintain full surface area for substance application. This local differentiation of attachment quality resolves the contradiction between secure attachment and effective application surface area.
2Stability of the object's composition
If the applicator is adhered along its entire side to the plastic backing layer, then the package structure is stable, but only a portion of the applicator is usable at any one time for applying the contents
Solution Approach 1:
The applicator attachment is divided into adhered and non-adhered regions, allowing the structure to remain stable through the adhered portion while the non-adhered portion provides full surface area access for efficient substance application.
Solution Approach 2:
The first region of the applicator provides structural stability through adherence to the backing layer, while the second region provides full productivity for substance application. This local quality differentiation simultaneously achieves both structural stability and high application efficiency.
3Ease of operation
If the package is designed to be opened easily with a single hand, then the ease of operation is improved, but the applicator may not remain perpendicular to the target surface
Solution Approach 1:
The package structure incorporates a tear notch that enables dynamic opening action with single hand operation. The applicator's partial non-adherence allows it to dynamically maintain perpendicular orientation to the target surface during the opening and application process, adapting to the changing geometry as the package is opened.
Data Source
AI summary
A package for dispensing a substance is described, where the package includes a stiff sheet that has a score formed on and traversing the first surface. The package also includes a flexible sheet defining a cavity for receiving the substance between the stiff sheet and the flexible sheet. The package also includes an applicator having a porous material pad, where the applicator is attached to the stiff sheet over the score by two hinges. The stiff sheet is configured to be folded about the score to cause the substance to be expelled from the cavity through a metering hole into the porous material pad and the two hinges allow the porous material pad to remain generally flat as the stiff sheet is folded.