Three-Panel Lidding Device with Integrated Venting and Foot Panel
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Solution Overview
Problem
Conventional packaging of pre-prepared frozen and microwavable foods requires both a clear plastic film and an outer carton, which can lead to improper venting issues during cooking and generates unnecessary waste, as consumers often lack the necessary tools to vent the film effectively.
Innovation Solution
A three-panel paperboard lidding device that eliminates the need for an outer carton and clear film, featuring a thermoplastic heat seal coating for sealing, various venting systems (such as perforations, pull tabs, and push-to-vent features) to allow for safe and easy ventilation during cooking, and a foot panel for upright display and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clear plastic film is used to cover the food container, then the food is protected during transport and storage, but improper venting occurs during cooking and waste is generated
Solution Approach 1:
The patent extracts the venting function from a separate tool (knife or scissors) and integrates it directly into the packaging structure through pre-formed vents in the plastic film. This allows consumers to vent the package during cooking without needing external tools, resolving the ease of operation problem while maintaining food protection.
Solution Approach 2:
The patent incorporates pre-formed vents and venting instructions on the packaging before the consumer receives it. The vents are pre-positioned and ready to be used, eliminating the need for consumers to figure out how to vent the package during cooking. This preliminary preparation resolves the venting difficulty while maintaining package integrity during transport.
2Reliability
If both outer carton and clear film are used for packaging, then food protection is enhanced, but waste is increased and device complexity increases
Solution Approach 1:
The patent merges the functions of the outer carton and clear film into a single integrated packaging structure. The plastic film is heat-sealed directly to the container, eliminating the need for a separate outer carton. This consolidation maintains food protection while reducing packaging waste and simplifying the overall packaging system.
Solution Approach 2:
The patent makes the plastic film packaging serve multiple functions: it protects the food during transport, provides structural support, and includes integrated venting capabilities for cooking. By making the packaging multi-functional, the patent eliminates the need for separate components (outer carton and film), reducing waste while maintaining protection.
3Ease of operation
If consumers use knife or scissors to vent the film, then venting is achieved, but the process becomes complicated and improper venting occurs
Solution Approach 1:
The patent enables the packaging to vent itself during cooking through pre-formed vents that open automatically when heated. The packaging structure includes self-contained venting mechanisms that do not require external tools or complex user actions. This self-service approach simplifies the venting process while eliminating the need for knives or scissors.
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 lidding device ensures proper ventilation during cooking, reduces waste by eliminating the need for an outer carton and clear film, and provides a reusable, recyclable, or compostable solution for food containers, enhancing both cooking safety and environmental sustainability.
Implementation Method 1
featuring a thermoplastic heat seal coating for sealing
Data Source
AI summary
Embodiments of the present invention provide a three-panel lidding device used to seal a food container. Such devices are particularly useful for covering and sealing a plastic food container, eliminating (or diminishing) the need for an outer carton and the clear film membrane that traditionally covers a food container. The lidding device may contain all brand identifiers, product messaging, ingredient list, instructions (e.g., opening and cooking) printed directly on the device. The device may also allow for venting of the food container during cooking and may then be removed for serving. The device may further provide a foot panel that allows the food product container/lidding device to sit upright, enhancing store front and freezer display options.