Sealable Enclosure with Micro-Perforation Valve for Contaminant Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing product packaging is inadequate for preventing contamination from ambient contaminants during heating processes, as seen in scenarios like gluten-free baking, peanut allergy concerns, and sterilization of medical equipment, where ambient particles can contaminate packaged products.
Innovation Solution
A sealable enclosure with micro-perforation portions and a heat-sensitive adhesive that allows generated gases to vent out while preventing ambient contaminants from entering, using a film layer and enclosure structure that includes a first micro-perforation portion for initial gas release and a second micro-perforation portion for subsequent gas release once the adhesive reaches a threshold temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the packaging is sealed to prevent contamination, then contamination protection is improved, but gas generated during heating has no venting path causing pressure buildup
Solution Approach 1:
The packaging incorporates a microporous valve structure with micro-perforations that allow gas molecules to pass through while blocking larger contaminant particles. The porous structure enables selective permeation based on particle size, venting internal pressure while maintaining contamination protection.
Solution Approach 2:
The microporous valve acts as an intermediary element between the sealed interior and external environment. It mediates the conflicting requirements by allowing gas passage while blocking contaminants, resolving the contradiction between pressure relief and contamination protection.
2Stress or pressure
If micro-perforations are added to vent gas, then pressure relief is improved, but ambient contaminants can enter through the same openings
Solution Approach 1:
The microporous valve utilizes materials with controlled pore sizes that are large enough to allow gas molecules to pass through freely but small enough to block larger contaminant particles. This selective permeation enables pressure relief while preventing contaminant entry.
Solution Approach 2:
The valve structure has different properties at different scales: at the molecular level, the pores are open to allow gas flow, but at the particle level, the pore walls provide physical barriers to contaminants. This local quality differentiation resolves the contradiction.
3Object-affected harmful factors
If the packaging remains fully sealed during heating, then contamination protection is maintained, but the heating process cannot proceed due to pressure buildup
Solution Approach 1:
The microporous valve enables the packaging to remain effectively sealed while allowing gas permeation during heating. The porous structure maintains contamination protection while permitting the pressure changes necessary for the heating process to proceed.
Solution Approach 2:
The valve provides continuous gas venting throughout the heating process, allowing the heating to proceed without interruption. The continuous permeation prevents pressure buildup that would otherwise stop the heating action.
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
Effectively prevents contamination of packaged products by allowing gas venting while maintaining a sterile environment within the enclosure, ensuring the product remains uncontaminated during heating processes.
Implementation Method 1
When the temperature of the strip of heat sensitive adhesive reaches a threshold temperature, the strip of heat sensitive adhesive releases
Implementation Method 2
heating of the sealable enclosure with the object sealed therein permits gas generated by the heating to vent out through a first micro-perforation portion
Data Source
AI summary
A sealable enclosure is disclosed that is configured to enclose an object that is to be heated, wherein heating of the sealable enclosure with the object sealed therein permits gas generated by the heating to vent out through a first micro-perforation portion disposed in an enclosure, wherein the gas vents into a cavity formed between the outside surface of the enclosure, a lower surface of a file layer, and a strip of heat sensitive adhesive. When the temperature of the strip of heat sensitive adhesive reaches a threshold temperature, the strip of heat sensitive adhesive releases so that the gas may vent from the cavity through a second micro-perforation portion disposed in the film layer out into an ambient region surrounding the sealable enclosure while preventing ambient contaminates in the ambient region from entering into the sealable enclosure.