Slot Aperture Dispenser Structure for Sheet Fallback Prevention
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Solution Overview
Problem
Carton-type dispensers for sheet products face issues such as fallback, double pull, and streaming due to the size of the dispensing opening, which limits the usability and convenience of the dispensers, especially when the sheet products are moist or tall, leading to quality defects.
Innovation Solution
The dispenser features a slot aperture that is strategically positioned and sized to provide optimal resistance, minimizing fallback and streaming, with a channel connecting the slot aperture to a larger aperture for easy retrieval and dispensing, allowing for a single pull mechanism and reducing premature tearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the opening is sized large enough to allow user fingers to reach through and grasp the sheet product, then ease of operation is improved, but fallback occurs because the opening is too large to constrict the sheet products
Solution Approach 1:
The dispensing opening is segmented into two distinct components: a first aperture in the rear wall that allows finger access for grasping, and a second slot aperture in the front wall that provides constriction for preventing fallback. This segmentation allows each opening to be optimized for its specific function without compromise.
Solution Approach 2:
The channel connecting the first aperture to the second slot aperture acts as an intermediary structure. It guides the sheet product from the grasping area to the constriction area, ensuring smooth transition and proper positioning of the sheet product through the dispensing opening.
2Productivity
If the dispenser height is increased for economic reasons, then productivity is improved, but fallback is exacerbated because the leading and trailing portions unfold inside a package taller than the overlap
Solution Approach 1:
The dispensing opening is segmented into two distinct components: a first aperture in the rear wall that allows finger access for grasping, and a second slot aperture in the front wall that provides constriction for preventing fallback. This segmentation allows each opening to be optimized for its specific function without compromise.
Solution Approach 2:
The second slot aperture is positioned and sized to provide preliminary resistance to the sheet product as it passes through, counteracting the gravitational force that causes fallback before the sheet product can fully unfold and fall back into the dispenser.
3Adaptability or versatility
If the sheet product is impregnated with moisture, lotion, or cleansing composition for enhanced functionality, then adaptability is improved, but fallback occurs because the sheet product becomes heavier and has reduced surface friction
Solution Approach 1:
The second slot aperture is positioned and sized to provide preliminary resistance to the sheet product as it passes through, counteracting the gravitational force that causes fallback before the sheet product can fully unfold and fall back into the dispenser.
Solution Approach 2:
The dimensions of the second slot aperture are specifically optimized to provide appropriate frictional resistance that accommodates sheet products with varying surface properties, including those impregnated with moisture, lotion, or cleansing compositions.
4Device complexity
If a single aperture is used for dispensing to simplify the structure, then device complexity is reduced, but quality defects occur including double pull and streaming
Solution Approach 1:
The dispensing opening is segmented into two distinct components: a first aperture in the rear wall that allows finger access for grasping, and a second slot aperture in the front wall that provides constriction for preventing fallback. This segmentation allows each opening to be optimized for its specific function without compromise.
Solution Approach 2:
The constriction function is extracted from the grasping function by creating a separate second slot aperture that is specifically designed to provide frictional resistance and prevent double pull and streaming, while the first aperture is optimized solely for user access.
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 solution effectively reduces or eliminates fallback, double pull, and streaming, ensuring smooth and efficient dispensing of sheet products, enhancing user convenience and reducing product waste.
Implementation Method 1
The slot aperture has a length about 20% to about 50% of a width of individual sheet products... a pair of adjacent side walls sufficiently close to one another to grasp and retain individual sheet products
Data Source
AI summary
A dispenser includes a housing having a dispensing wall, a bottom wall disposed opposite the dispensing wall, two side walls connecting the dispensing wall to the bottom wall, and two end walls connecting the dispensing wall, the bottom wall and the two side walls. A first slot aperture is disposed in the dispensing wall centered between the two end walls, the first slot aperture having a major axis oriented perpendicular to each of the two side walls. A second slot aperture is disposed in a first of the two side walls, the second slot aperture having a major axis oriented relative to the major axis of the first slot aperture such that the first slot aperture and the second slot aperture define a contiguous aperture between the dispensing wall and the first of the two side walls, the second slot aperture having a width less than a width of the first slot aperture.