Microwave Interactive Food Container With Preformed Support Mounting
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Solution Overview
Problem
Current microwave containers for heating, browning, and crisping food in microwave ovens lack a balance of properties and efficient methods for forming, leading to suboptimal cooking results.
Innovation Solution
A container design featuring a microwave interactive web mounted to a preformed, dimensionally stable support, which includes pleats and a peripheral bead, enhancing microwave energy interaction for uniform heating and browning, formed through a manufacturing system that serially moves containers and webs for precise mounting and cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a microwave interactive web is laminated to a flat paperboard blank and then erected into a package, then the container can be formed with microwave interactive properties, but the process is complex and the dimensional stability is insufficient
Solution Approach 1:
The support structure is preformed into a three-dimensional configuration before the microwave interactive web is mounted to it. This preliminary formation of the support eliminates the need to erect the package after lamination, thereby simplifying the manufacturing process while ensuring dimensional stability.
Solution Approach 2:
The container is divided into two separate components: a support structure and a microwave interactive web. The support is formed independently in three dimensions, and the web is separately prepared and then mounted to the preformed support. This segmentation allows each component to be optimized independently, improving both stability and simplifying assembly.
2Reliability
If the microwave interactive web is mounted to a preformed container, then the dimensional stability is improved, but the manufacturing precision required for mounting increases
Solution Approach 1:
The support is preformed into its final three-dimensional configuration with all necessary features (such as recesses, flanges, or mounting surfaces) prepared in advance. This preliminary preparation of the support structure provides precise registration features that guide the mounting of the microwave interactive web, thereby reducing the actual mounting precision requirements.
Solution Approach 2:
A substrate or intermediate layer is used between the microwave interactive web and the support structure. This intermediary layer can accommodate minor misalignments and provides a buffer that reduces the stringent precision requirements for direct mounting to the support.
3Reliability
If pleats are added to the microwave interactive web, then the microwave energy distribution is improved, but the device complexity increases
Solution Approach 1:
Pleats are incorporated into the microwave interactive web to create curved and folded surfaces that conform to the three-dimensional support structure. These curved surfaces improve microwave energy distribution by reflecting and directing energy more uniformly across the food surface, while the pleating is achieved through standard forming processes that do not significantly increase complexity.
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 enables improved heating and browning of food by optimizing microwave energy distribution, resulting in more efficient and consistent cooking outcomes.
Implementation Method 1
The microwave energy interactive web typically includes a microwave interactive material, for example a metal, supported on a substrate, typically a polymer film. The microwave interactive material includes one or more features that interact with microwave energy to enhance or reduce the effects of the microwave energy on the food.
Implementation Method 2
The microwave interactive material includes one or more features that interact with microwave energy to enhance or reduce the effects of the microwave energy on the food.
Data Source
AI summary
A container that includes a microwave interactive web at least partially overlying and joined to a three-dimensional support, wherein the three-dimensional support may be formed prior to having the microwave interactive web mounted thereto. The three-dimensional support may be a preformed container that is sufficiently rigid and dimensionally stable for use in containing food.