Container Thermal Liner With Metallized PE Foam and UV Shielding
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Solution Overview
Problem
Existing thermal insulation products for transporting perishable goods have a high coefficient of thermal conductivity and lack UV protection, making it difficult to maintain temperature stability and protect cargo from UV radiation during transportation.
Innovation Solution
A thermal liner made of laminated metallized polyethylene foam with light-reflecting and heat-shielding properties, combined with a black polyethylene film for UV protection, which repeats the inner shape of the container and features an openable front wall with eyelets for secure fitting, reduces thermal conductivity and prevents UV penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional thermal insulation materials are used, then the structure is simple, but the coefficient of thermal conductivity is high
Solution Approach 1:
The patent uses a composite structure consisting of polyethylene foam as the base thermal insulation material, laminated with metallized film (aluminum or light-reflecting coating) on the outer surface. This combination provides both thermal insulation and reflective properties, reducing thermal conductivity while maintaining structural simplicity.
2Device complexity
If conventional insulation materials are used, then the material is simple, but UV protection is not provided
Solution Approach 1:
The patent combines polyethylene foam with metallized film that has light-reflecting properties. The metallized layer serves dual functions: reflecting thermal radiation and blocking UV rays, thereby providing UV protection without significantly complicating the material structure.
3Ease of manufacture
If the liner does not repeat container shapes, then manufacturing is easier, but thermal insulation efficiency is reduced
Solution Approach 1:
The liner is designed as a modular structure with a front wall that can be opened and side walls that can be folded or adjusted. This segmentation allows the liner to adapt to different container shapes and sizes while maintaining effective thermal insulation contact with the container surfaces.
4Device complexity
If the front wall is not openable, then the structure is simpler, but accessibility and loading/unloading are hindered
Solution Approach 1:
The front wall is designed as a separate, openable component that can be detached or folded back, allowing easy access to the cargo while the rest of the liner remains intact. This segmentation provides operational flexibility without significantly complicating the overall structure.
Solution Approach 2:
The front wall incorporates hinges or flexible connections that allow it to move between closed and open positions. This dynamic design enables easy loading and unloading while maintaining structural integrity when closed, balancing simplicity with operational ease.
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 thermal liner effectively reduces thermal conductivity and provides UV protection, maintaining temperature stability and preventing external temperature fluctuations, achieving a temperature difference of at least 9 degrees across varying conditions.
Implementation Method 1
laminated metallized polyethylene foam (PE foam) with light-reflecting and heat-shielding ability
Implementation Method 2
thermal insulating material
Implementation Method 3
a black polyethylene film with the possibility of avoiding ultraviolet rays through the liner
Data Source
Figure 1~2
AI summary
The thermal liner relates to the field of thermal insulation for transporting goods and contains a thermal insulating material, and its components are hermetically connected. At that, the liner repeats the inner shapes of the container; it has a front wall that opens, and its fastening elements are made along the upper perimeter with the possibility of fixing the liner in the container using a mounting cord and the inner lugs of the metal container. The thermal liner is made of a set of materials, and laminated metallized polyethylene foam (PE foam) as the thermal insulating material and a black polyethylene film, which provides the desired temperature difference between the external and internal temperatures and reduces the thermal conductivity of the product.