Double-Sealed Self-Heating Container for Leak-Safe Rapid Warming
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Solution Overview
Problem
Existing self-heating containers face manufacturing complexity, structural unsuitability, and safety issues due to high temperatures, particularly in plastic models and metal containers with carbonated beverages, where leakage and pressure concerns arise.
Innovation Solution
A self-heating container design featuring a metallic outer body, a metallic inner body with a plastic housing that reacts to produce heat through an exothermic chemical reaction, sealed with a double seam to prevent leakage and ensure safety, allowing the consumable to be heated efficiently and safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If plastic containers are used for self-heating, then manufacturing is easy and cost is low, but high temperature causes fissures, punctures or distortions leading to leakage
Solution Approach 1:
The container is divided into two separate bodies: an outer plastic container for the consumable and an inner metal container for the heating reagent. This segmentation allows each material to be used in its optimal form - plastic for ease of manufacture and metal for heat resistance - thereby resolving the contradiction between manufacturing ease and container integrity at high temperature.
2Temperature
If metal containers are used for self-heating, then temperature resistance is improved, but structure becomes complex and manufacturing cost increases
Solution Approach 1:
The inner metal container is nested within the outer plastic container, with the inner container positioned concentrically. This nesting arrangement provides a straightforward manufacturing process while ensuring the metal container protects the reagent from high temperatures during heating, thus resolving the contradiction between temperature resistance and structural complexity.
3Reliability
If double seal is implemented, then leakage prevention is improved, but manufacturing complexity increases
Solution Approach 1:
The sealing function is merged into the crimping operation that already exists in conventional can manufacturing. The bottom lid is crimped over both the outer and inner container flanges in a single operation, creating a double seal without requiring additional sealing steps or complex manufacturing processes, thus resolving the contradiction between leakage prevention and manufacturing simplicity.
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 container achieves rapid and safe heating of contents to suitable temperatures without leakage or structural issues, ensuring the reagents remain sealed and the product is heated efficiently, addressing the limitations of existing designs.
Implementation Method 1
the two components to mix and generate heat through an exothermic chemical reaction which heats the contents of the container
Data Source
AI summary
A self-heating container and a method of manufacturing the container. The container has a simple structure in which the metallic outer body holds the consumable product, and a metallic inner body and plastic housing contain the two components which react to produce the heat for the self-heating function. A lower lid is crimped over flanges on the lower ends of the inner body and the outer body, forming a double seal. When a flexible portion of the housing is pressed, a seal is punctured, causing the two components to mix and generate heat through an exothermic chemical reaction which heats the contents of the container.