Multilayer Wood Metal Sheet Composite Shielding
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Solution Overview
Problem
Conventional building materials like plywood and particle board lack strength, stiffness, electromagnetic shielding, chemical, and abrasion resistance, requiring additional coatings and secondary operations that increase costs and complexity.
Innovation Solution
A multilayer sheet material comprising alternating wood and metal layers, with an adhesive in between, allowing for enhanced rigidity, machinability, and built-in electromagnetic shielding, which can be manufactured using standard woodworking tools and adhesives like G/Flex 650 epoxy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional building materials like plywood and particle board are used, then they are easy to manufacture and work with, but they lack strength, stiffness, electromagnetic shielding, chemical, and abrasion resistance
Solution Approach 1:
The patent applies composite materials by combining wood layers and metal layers into a single multilayer sheet material. The wood layers provide structural framework and aesthetic properties, while the metal layers embedded within provide enhanced strength, stiffness, electromagnetic shielding, chemical resistance, and abrasion resistance. This composite structure resolves the contradiction by achieving superior mechanical properties without requiring additional coatings or complex secondary operations.
Solution Approach 2:
The patent segments the sheet material into multiple alternating layers of wood and metal. This segmentation allows each material to contribute its specific advantages: wood provides workability, aesthetics, and structural support, while metal provides reinforcement and functional properties like electromagnetic shielding. The segmented layered structure enables the material to achieve high strength and stiffness without becoming overly complex in manufacture.
2Reliability
If additional coatings are applied to plywood, particle board and OSB to provide electromagnetic shielding, chemical or abrasion resistance, then these properties are achieved, but secondary operations require additional expense
Solution Approach 1:
The patent merges the functional properties of electromagnetic shielding, chemical resistance, and abrasion resistance directly into the core material structure by embedding metal layers within the wood matrix. This eliminates the need for separate coating applications and secondary operations. The metal layers inherently provide these protective functions, thereby reducing manufacturing steps and costs while improving reliability.
Solution Approach 2:
The patent incorporates the metal layers during the primary material formation process rather than as a subsequent coating step. By performing the shielding and protective function integration in advance (during lamination), the material achieves electromagnetic shielding, chemical resistance, and abrasion resistance as inherent properties, eliminating the need for later secondary operations and reducing overall manufacturing complexity.
3Length of stationary object
If stronger and stiffer building materials are used, then reduced overall thickness is achieved, but material availability and workability may be compromised
Solution Approach 1:
The patent applies local quality by strategically placing thin metal layers at specific positions within the multilayer structure, rather than using a uniformly thick metal sheet. The metal layers are positioned to provide maximum structural reinforcement and functional properties where needed, while the wood layers maintain overall workability and aesthetics. This localized reinforcement enables reduced overall thickness while preserving ease of operation for cutting, shaping, and fastening.
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 multilayer sheet material offers improved strength, stiffness, and electromagnetic shielding properties, enabling cost-effective construction of rigid and secure structures while maintaining aesthetic appeal, and can be easily machined and shaped.
Implementation Method 1
A multilayer sheet material comprising: a first wood layer; a second metal layer adjacent to the first wood layer
Data Source
AI summary
The present disclosure provides multilayer sheet materials and methods of making the same. Specifically, layers of wood and metals are employed to construct multilayered sheets.