Laminated Roofing Composition With Recycled Layers for Durability
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Solution Overview
Problem
Conventional roofing products do not effectively utilize recycled roofing materials, which can lead to increased costs and environmental issues due to the disposal of old materials, and they often lack the necessary durability and flexibility to withstand outdoor conditions and handling processes without premature adhesion during storage and installation.
Innovation Solution
A laminated roofing product is developed using sheets with varying compositions, where one sheet includes a higher recycled material content for stiffness and another with lower or no recycled material and higher additive chemical content for flexibility, allowing for synergistic properties such as reduced manufacturing costs and improved impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If recycled roofing material is used in roofing products, then manufacturing cost is reduced and environmental benefits are achieved, but the roofing product may lack sufficient durability and flexibility to withstand outdoor environments and handling processes
Solution Approach 1:
The patent uses a composite structure with a first sheet containing recycled roofing material and a second sheet containing virgin roofing material. This composite construction allows the product to benefit from the cost-effectiveness of recycled materials while the virgin material layer provides the necessary durability and performance characteristics to withstand outdoor environments.
Solution Approach 2:
The patent applies different material qualities to different parts of the roofing product. The first sheet (with recycled material) and second sheet (with virgin material) have distinct properties tailored to specific functions. This local differentiation allows each layer to optimize its contribution to overall product performance while addressing the limitations of recycled materials in specific areas.
2Ease of manufacture
If recycled roofing material is used in roofing products, then manufacturing cost is reduced, but the roofing product may lack sufficient flexibility to withstand handling processes and installation
Solution Approach 1:
The laminated structure combines recycled roofing material in the first sheet with virgin roofing material in the second sheet. The virgin material layer compensates for the reduced flexibility of recycled material, ensuring the overall product maintains adequate flexibility for handling and installation while still achieving cost reductions through recycled content.
Solution Approach 2:
The patent assigns different material properties to different sheets based on their specific functions. The second sheet with virgin material provides the flexibility needed for handling and installation, while the first sheet with recycled material provides cost-effectiveness. This localized assignment of material qualities resolves the flexibility deficiency of recycled materials.
3Ease of manufacture
If a single sheet with high recycled material content is used, then manufacturing cost is reduced, but the roofing product may not provide sufficient impact resistance
Solution Approach 1:
The patent employs a composite structure where the first sheet contains recycled roofing material and the second sheet contains virgin roofing material. This multi-layer composite construction enhances impact resistance by combining materials with different mechanical properties, allowing the product to achieve adequate strength performance while maintaining cost-effectiveness through recycled content utilization.
Solution Approach 2:
The patent applies different material qualities to different sheets based on their specific functions. The second sheet with virgin material provides enhanced impact resistance, while the first sheet with recycled material provides cost-effectiveness. This localized assignment of material qualities resolves the impact resistance deficiency of recycled materials.
Data Source
AI summary
A laminated roofing product can include a first sheet including a first coating that is substantially free of recycled roofing material, and a second sheet adjacent to the first sheet. The second sheet can include a second coating having a second sheet recycled roofing material. In another embodiment, the laminated roofing product can include a first sheet including a first sheet recycled roofing material, and a second sheet adjacent to the first sheet. The second sheet can include a second sheet recycled roofing material, wherein the second sheet has a higher recycled roofing content as compared to the first sheet. In another embodiment, a method of forming a laminated roofing product includes laminating a first sheet and a second sheet together. The second sheet has a higher recycled roofing content as compared to the first sheet.