Hinged Applicator Dispensing Package for One-Handed Use
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Solution Overview
Problem
Existing dispensing packages for fluids, gels, or pastes often reduce the effective surface area of the applicator when opened, making it difficult to apply substances efficiently with a single hand.
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 bent without reducing the applicator's surface area, and including a barrier layer to direct the substance effectively through a metering hole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the applicator is adhered along its entire side to the plastic backing layer, then the applicator remains stable and flat, but the effective surface area of the applicator is dramatically reduced when the package is opened
Solution Approach 1:
The attachment structure is segmented into discrete hinge regions rather than continuous adhesion. The applicator is attached to the backing layer only at specific hinge locations, leaving the central portion of the applicator free and flat. This segmentation allows the applicator to maintain stability through the hinge attachments while preserving its full surface area for substance application.
2Ease of operation
If the package is designed to be opened easily with a single hand, then the opening mechanism is simplified, but the applicator surface area is reduced due to folding
Solution Approach 1:
The package incorporates a score line that segments the backing layer into separable regions, enabling easy one-handed opening by bending along the pre-defined fracture line. Simultaneously, the applicator attachment is segmented into hinge regions that remain functional during opening while preserving the central applicator surface area.
Solution Approach 2:
The hinge structure acts as an intermediary element between the applicator and the backing layer. It provides the necessary mechanical connection for stability and opening functionality while allowing the applicator to remain substantially flat and maintain its full surface area during the opening process.
3Ease of operation
If the applicator is folded back from the middle portion during opening, then the package opening mechanism works, but only a portion of the applicator is usable at any one time
Solution Approach 1:
The attachment is segmented into hinge regions at the edges rather than continuous adhesion across the entire applicator. This segmentation allows the central portion of the applicator to remain flat and fully accessible, maximizing the usable surface area for substance application while still enabling package opening through the hinge mechanisms.
Solution Approach 2:
The hinge serves as an intermediary that enables package opening functionality without requiring the applicator to fold back. It provides the necessary mechanical linkage while allowing the applicator surface to remain substantially planar and fully usable for its intended purpose.
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
Enables easy one-handed opening and maintains a larger effective surface area of the applicator, ensuring efficient and uniform application of substances without loss of contact area.
Implementation Method 1
An applicator is also included in the package, where the applicator has a porous material pad
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.