Compostable Insulation Insert for Recyclable Shipping Containers
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Solution Overview
Problem
Conventional thermally insulating materials for shipping containers, such as expanded polystyrene (EPS), are not compostable, leading to disposal challenges.
Innovation Solution
A shipping container using compostable thermally insulating pads made of solid starch panels enclosed in a compostable water-proof film, which can be folded and assembled to fit inside a recyclable cardboard box, providing thermal insulation while being easily disposable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If expanded polystyrene (EPS) is used as thermally insulating material, then thermal insulation performance is improved, but compostability deteriorates
Solution Approach 1:
The patent changes the material composition parameter from synthetic polys...
Solution Approach 2:
The patent uses a composite structure combining starch-based insulating material with biodegradable film wrapping, where the starch material provides thermal insulation and the film provides water resistance and compostability. This composite approach resolves the contradiction by integrating materials with complementary properties.
2Object-generated harmful factors
If compostable starch panels are used instead of EPS, then compostability is improved, but structural integrity deteriorates
Solution Approach 1:
The patent combines starch panels with a biodegradable film wrapping system, where the film provides structural support and moisture protection while the starch material maintains compostability. This composite structure addresses the strength deficiency of pure starch materials.
Solution Approach 2:
The patent employs a biodegradable film wrapping that encloses the starch panels, providing a protective barrier that enhances structural integrity and moisture resistance while maintaining the compostable nature of the overall package.
3Object-affected harmful factors
If water-proof film is added to protect starch panels, then water resistance is improved, but compostability deteriorates
Solution Approach 1:
The patent selects specific material parameters for the film wrapping, choosing biodegradable polymers that maintain water resistance during shipping but decompose under composting conditions. This parameter selection allows the film to serve dual purposes: protecting the starch panels during transport and enabling compostability after use.
Solution Approach 2:
The patent uses a biodegradable film wrapping that provides water-proof protection during shipping but breaks down under composting conditions. This film acts as a temporary protective barrier that disappears in the composting process, allowing the starch material to decompose fully.
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 offers equivalent thermal insulation to EPS while being fully compostable and recyclable, allowing for easy assembly and disposal, reducing environmental impact.
Implementation Method 1
a plurality of thermally insulating pads shaped to be positioned in a cavity of a rectangular prism shipping container such that each of a floor, plurality of side walls and cover of the container are adjacent to and covered by a pad from the plurality of thermally insulating pads
Data Source
AI summary
A thermal insulation article for placement in a shipping container to hold an item includes a thermally insulating pad shaped to be positioned in a cavity of a rectangular prism shipping container to be adjacent to and cover one or more of a floor, four side walls and cover of the container while leaving an interior space to receive the item. The thermally insulating pad includes a compostable panel that holds together as a single unit and is formed primarily of starch, and compostable or recyclable film forming a pocket and surrounding the panel to prevent water from reaching the panel within the pocket. The film is secured to the panel along a portion but not all of the opposite surfaces of the compostable panel.