Microwave Packaging Body with Re-Stickable Steam Vent Label
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Solution Overview
Problem
Conventional packaging bodies for microwave heating allow steam to escape through vents or ports, leading to potential leakage of contents during transport after heating.
Innovation Solution
A packaging body design with a lid that includes a steam release port covered by a label that can be peeled and re-stuck after heating, utilizing a heat-shrinkable film outermost layer to maintain port exposure and prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a steam release port is provided to discharge steam generated by heating, then steam can be released during microwave heating, but contents may leak from the steam release port during transport after heating
Solution Approach 1:
The label is pre-positioned to cover the steam release port during transport, and the user is instructed to peel it off before heating. This preliminary arrangement allows the same structure to serve dual purposes: preventing leakage during transport and allowing steam release during heating.
Solution Approach 2:
The state of the steam release port is made dynamic through the removable label. The port transitions from a closed state (label attached during transport) to an open state (label peeled during/after heating), allowing the packaging to adapt to different operational phases.
2Object-generated harmful factors
If the label is completely peeled off before heating to expose the steam release port, then steam can be released during heating, but the label cannot be re-stuck to seal the port after heating
Solution Approach 1:
The label is designed to be peeled only partially rather than completely removed. This partial peeling exposes the steam release port sufficiently for steam escape while leaving enough adhesive portion attached to enable re-sticking and re-sealing after heating.
3Reliability
If the label remains fully stuck to the lid member during heating, then the steam release port remains closed, but steam cannot be discharged properly
Solution Approach 1:
The user is instructed to peel the label in advance before heating, so the steam release port is exposed and ready for steam discharge. This preliminary action ensures proper steam venting while maintaining seal integrity for other portions of the packaging.
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 design ensures that steam is released during heating without leaking, allowing safe transport of contents by maintaining the steam release port's exposure and enabling re-sealing post-heating.
Implementation Method 1
the label includes an outermost layer configured by a heat-shrinkable film... the heat-shrinkable film shrinks due to the temperature of generated steam, and the steam vent label is warped upward to open the steam vent hole
Data Source
AI summary
A packaging body that can be carried without contents leaking after the contents are heated by a microwave oven. The packaging body includes a container having an accommodation space accommodating the contents and a lid attached to the container. The lid is attached to the container so as to close the accommodation space and includes a lid member in which a steam release port is formed to discharge steam generated by heating and a label stuck to the lid member. The label is peeled from the lid member before the contents are heated so that a stuck state remains partially, to expose the steam release port, maintains a state in which the steam release port is exposed while the contents are heated, and is capable of being re-stuck to the lid member to cover the steam release port after the contents are heated.