Microwave Food Package With Water Absorbent Surface
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Solution Overview
Problem
Existing food packaging does not facilitate efficient and even heating of relatively dry food products, such as crispy snacks, without burning them when using microwave energy, as they lack a mechanism to manage microwave energy absorption.
Innovation Solution
A microwave-safe food package with a water absorbent outer surface, which can absorb a controlled amount of water to act as a supplemental load, reducing the intensity of microwave energy exposure and promoting even heating, while maintaining barrier properties to prevent moisture migration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If dry food products are heated in a microwave using conventional packaging, then heating speed is increased, but the food burns due to excessive microwave energy absorption
Solution Approach 1:
A water-soluble polymer coating is applied to the exterior surface of the packaging container. This coating acts as an intermediary that absorbs microwave energy and converts it to heat, which then transfers to the food through the container walls, preventing direct microwave exposure and burning of the food while maintaining efficient heating speed
Solution Approach 2:
The packaging container surface is modified by applying a polymer coating with specific water solubility characteristics. The coating's ability to dissolve in water and its specific thermal properties change the microwave energy absorption parameters, allowing controlled energy conversion that prevents burning while maintaining heating efficiency
2Stability of the object's composition
If a water absorbent coating is applied to the package exterior, then microwave heating uniformity is improved, but manufacturing complexity increases
Solution Approach 1:
The packaging structure is enhanced by adding a polymer coating layer with specific water solubility and thermal properties. This parameter change in the surface material creates uniform heat distribution during microwave heating while maintaining a relatively simple overall packaging structure
Solution Approach 2:
The packaging container is constructed as a composite structure combining the base container material with a water-soluble polymer coating layer. This composite approach achieves uniform heating through the interaction of materials with different microwave absorption and thermal conductivity properties, while the coating can be applied using standard manufacturing processes
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 package allows for consistent and efficient heating of dry food products without burning, replicating the experience of consuming freshly cooked snacks, while being simple, inexpensive to manufacture, and easy to use.
Implementation Method 1
at least a portion of said outer surface is water absorbent
Implementation Method 2
a package for food products and a method that allows relatively dry food products to be heated using microwave energy
Implementation Method 3
a microwave-safe barrier layer
Data Source
AI summary
An improved package for heating dry food products is provided. The present invention allows a dry food product to be heated in a microwave oven. The package has barrier properties and at least a portion of an outer surface that is water absorbent, so that the food package may be wetted prior to being heated in the microwave in order to prevent burning of the food products inside.