Sustainable Shipping Container Floor Panel with Long Fiber Reinforcement
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Solution Overview
Problem
Shipping container floor panels face challenges in maintaining high mechanical performance and bond strength due to rapid temperature and humidity changes, leading to detachment of layers and reduced service life, while conventional materials like tropical hardwoods are unsustainable.
Innovation Solution
A container floor panel with a reinforcement layer of fibers at least 300 mm long, aligned in a sandwich structure, which provides mechanical strength and adapts to expansion and deformation of neighboring layers, allowing the use of sustainable materials that meet regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If tropical hardwood species are used to produce multi-layer thick plywood, then high mechanical performance and bond strength are achieved, but environmental sustainability deteriorates due to rapid forest diminishing
Solution Approach 1:
The invention changes the material parameters by using sustainable alternative materials (such as bamboo, rattan, or other renewable resources) with modified physical and mechanical properties. These materials are processed into panels with specific density, moisture content, and structural characteristics that meet the required mechanical performance while being environmentally sustainable
Solution Approach 2:
The invention employs composite material structures combining multiple layers of sustainable materials with different properties. The multi-layer construction includes core layers, surface layers, and reinforcement layers bonded together to achieve the required mechanical strength, stiffness, and durability without using tropical hardwood
2Strength
If multi-layered container floor panel structure is used, then mechanical strength is improved, but layer detachment occurs under rapid temperature and humidity changes
Solution Approach 1:
The invention applies different material properties and bonding characteristics to different parts of the panel structure. Surface layers have different expansion characteristics compared to core layers, and bonding agents are specifically selected for each interface to accommodate local thermal and moisture expansion variations, preventing delamination
Solution Approach 2:
The invention accounts for thermal and moisture expansion by selecting materials with compatible expansion coefficients for adjacent layers. The bonding agents are specifically formulated to maintain adhesion under thermal cycling and humidity changes, accommodating the dimensional changes that occur during service without causing layer detachment
3Duration of action of stationary object
If long service life of 12 to 15 years is demanded, then durability requirements increase, but susceptibility to moisture entry and bond failure increases under challenging environmental conditions
Solution Approach 1:
The invention uses surface layers and coatings that act as protective barriers against moisture penetration. These surface films are specifically selected or applied to provide water resistance while allowing the panel structure to accommodate dimensional changes, preventing moisture from reaching the bonding interfaces
Solution Approach 2:
The invention converts the potential harm of thermal and moisture expansion into a benefit by using bonding agents and material combinations that utilize these expansions to maintain or improve bond strength. The expansion characteristics of different layers are coordinated to work together rather than against each other, enhancing long-term durability
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 enhances the bond strength and durability of the panel, preventing moisture entry and extending service life, while enabling the use of environmentally friendly materials that meet the mechanical requirements of container floor panels.
Implementation Method 1
at least one reinforcement layer formed by fibers with a length of at least 300 mm... which provides mechanical strength and adapts to expansion and deformation of neighboring layers
Data Source
Figure 1a~1b
Figure 2~3
Figure 4
AI summary
The invention concerns a container floor panel 10 for use as flooring of a shipping container, the container floor panel 10 comprises several layers 1, 2, 3, 4, 5 with at least one reinforcement layer 2, 4 formed by fibers 7 with a length of at least 300 mm. A new type of container floor panel made by more sustainable and environmentally-friendly resources that still match the high standard requirements can thereby be provided.