Composite Panel Reinforcement for Rotomolded Container Distortion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rotomolded containers made from linear low-density polyethylene (LLDPE) experience thermal expansion and contraction, leading to distortion of stackable elements and difficulties in proper stacking due to lack of structural reinforcement.
Innovation Solution
Incorporating a reinforcement panel made of composite material attached to the container's interior surface using spin-weld plugs, which are installed at a high rotation rate to fuse and weld the panel to the container, providing increased strength and minimizing distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the container is made from rotomolded LLDPE material, then the container is easy to manufacture and cost-effective, but the container experiences thermal expansion and contraction causing distortion of stackable elements
Solution Approach 1:
The patent applies composite materials by attaching reinforcement panels made of fiber-reinforced composite material (such as fiberglass or carbon fiber) to the interior surface of the rotomolded LLDPE container. This composite structure combines the manufacturing advantages of rotomolding with the dimensional stability and strength of fiber-reinforced composites, resolving the contradiction between ease of manufacture and dimensional stability.
Solution Approach 2:
The patent implements local quality by strategically placing reinforcement panels at specific locations on the container interior where stackable elements are positioned. This localized reinforcement provides dimensional stability precisely where needed without requiring the entire container to be made from more complex materials, thus maintaining ease of manufacture while improving dimensional stability.
2Device complexity
If the container lacks structural reinforcement, then the container structure is simple and manufacturing is easier, but the container distorts under thermal conditions making stacking difficult
Solution Approach 1:
The reinforcement panels use fiber-reinforced composite materials that provide high structural strength and dimensional stability with minimal added complexity. These panels prevent thermal distortion of the container, ensuring that stackable elements maintain their geometric precision and alignment, thus improving stacking precision without significantly increasing overall structural complexity.
Solution Approach 2:
The patent changes the physical and mechanical parameters of the container by adding reinforcement panels that alter the stiffness, strength, and thermal stability parameters. This allows the container to maintain its simple rotomolded structure while achieving the dimensional stability needed for precise stacking operations.
3Strength
If spin-weld plugs are installed at high rotation rate, then the panel and container are strongly fused providing increased strength, but the installation process requires more energy and complex equipment
Solution Approach 1:
The spin-weld plugs utilize their own rotational kinetic energy to generate the heat and friction needed for welding. The high-speed rotation of the plug itself creates the thermal energy required to melt and fuse the panel to the container, eliminating the need for external heating devices or complex welding equipment, thus achieving strong bonds without proportionally increasing system energy requirements.
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 effectively strengthens the container, preventing distortion of stackable elements across varying temperature ranges, ensuring proper stacking and structural integrity.
Implementation Method 1
The panel is attached to the container using spin-weld plugs installed at a high rotation rate. Through the installation of the spin-weld plugs, the panel becomes fused or welded to the container.
Implementation Method 2
In one embodiment, the rotation rate of the spin-weld plugs during installation is sufficient to cause the panel and container to locally vulcanize with each other and with the spin-weld plugs.
Implementation Method 3
these containers may thermally expand under higher temperatures or thermally contract under lower temperatures. This thermal expansion or contraction results in distortion of the case, especially distortion of the stackable elements
Implementation Method 4
these containers may thermally expand under higher temperatures or thermally contract under lower temperatures
Data Source
AI summary
A stackable equipment container includes at least one reinforcement panel made of a composite material attached to the container on an interior surface proximate an arrangement of stackable elements. The panel is attached to the container using spin-weld plugs installed at a high rotation rate. Through the installation of the spin-weld plugs, the panel becomes fused or welded to the container. In one embodiment, the rotation rate of the spin-weld plugs during installation is sufficient to cause the panel and container to locally vulcanize with each other and with the spin-weld plugs. The panel provides the container with increased strength and operates to minimize or eliminate distortion of the stackable elements.