Corrugated Ventilation Board Steam Escape Design
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Solution Overview
Problem
Existing fast food packaging fails to simultaneously retain heat, prevent food from becoming soggy due to condensation, and be cost-effective, as it either lacks sufficient ventilation or compromises on strength and manufacturing complexity.
Innovation Solution
A ventilation board manufacturing method involving a corrugated board with depressed portions on both liners and a corrugated layer, forming passageways for fluid passage without penetrating through the bottom liner, allowing steam to escape while maintaining structural integrity and heat retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If holes or slits are provided on the sides or near the edges of the carton for ventilation, then steam can escape from the packaging, but the holes are not located directly above the food and foreign objects and contaminants can fall on to the food, and the strength of the board is reduced
Solution Approach 1:
The invention uses the corrugated structure of the board itself as a porous ventilation system. The flutes of the corrugated board provide numerous small channels that allow steam to escape through the board material without requiring large holes or slits. This maintains the board's structural strength while providing effective ventilation to prevent condensation on the food.
2Temperature
If Styrofoam is used to retain heat within the carton, then heat retention is improved, but after time heat still escapes and condensation forms within the carton above the food
Solution Approach 1:
The invention applies local quality by providing ventilation specifically at the location where food is placed (directly above the food), while the rest of the carton maintains its heat-retaining properties. The corrugated board with flutes provides localized steam escape channels without compromising the overall thermal insulation of the packaging.
3Productivity
If direct holes through the panels of the board are used for ventilation, then steam can escape quickly from the carton, but the strength of the board is reduced
Solution Approach 1:
The invention utilizes the inherent porosity of the corrugated board structure through its flutes. These flutes create numerous small passages that collectively provide efficient steam escape routes while maintaining the board's structural integrity. The ventilation is achieved through the material's structure rather than by creating holes in it.
4Strength
If multilayer corrugated board is used with flutes parallel to each other, then compression strength and resistance to deformation are improved, but condensation would form on the plys on the inside of this carton making the food soggy
Solution Approach 1:
The invention introduces ventilation in the thickness dimension of the board by utilizing the flutes that run through the corrugated layers. This vertical ventilation path through the board's thickness allows steam to escape from the interior to the exterior, preventing condensation on the inner surfaces while maintaining the horizontal flute structure for strength.
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 prevents food from becoming soggy by allowing steam to escape while keeping the food warm and maintaining the structural strength of the packaging, addressing the limitations of current packaging solutions.
Implementation Method 1
forming passageways for fluid passage without penetrating through the bottom liner, allowing steam to escape
Data Source
AI summary
A ventilation board is manufactured from a corrugated board comprising at least one depressed portion on both sides of the board in such a way that flutes of the corrugated layer between said depressed portions are exposed to form a plurality of passageways for passage of fluid across the board, in other words, from one side to the other side of the board. The depressed portion is formed by forming a cut on the surface of each side of the board in such a way that the cut penetrating from one side of the board passes through the corrugated layer of the corrugated board but does not pass through the other side of the corrugated board, and depressing the cuts in such a way that the flutes between the depressed portion get exposed in order to provide passageways for passage of the fluid across the board.