Material with metallic layer for inflatable safety device
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Solution Overview
Problem
Existing inflatable safety products for vehicles, such as aircraft, face challenges with heavy and bulky materials that do not meet weight and space restrictions while maintaining structural integrity and compliance with safety regulations.
Innovation Solution
A fabric or flexible composite material comprising a substrate with a metallic layer, which can be completely covering or discontinuous, using materials like polyethylene and aluminum, to enhance strength and reduce weight, while meeting FAA regulations for seam strength and gas retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If heavy fabric or flexible composite materials are used for inflatable safety products, then structural integrity and safety regulation compliance are maintained, but weight increases making inflation difficult and increasing vehicle weight
Solution Approach 1:
The patent applies composite materials by combining a substrate (providing structural integrity) with a metallic layer (providing strength-to-weight ratio improvement). This composite structure achieves both the required structural integrity for safety applications and reduced weight compared to traditional heavy fabrics, directly resolving the contradiction between strength and weight.
2Weight of moving object
If substrate material is changed to reduce weight, then weight decreases, but safety regulation compliance may be compromised
Solution Approach 1:
The composite material combines a substrate with a metallic layer to create a new material system that meets safety regulations while reducing weight. The substrate provides the base structural properties, while the metallic layer enhances strength and durability, ensuring compliance with safety standards despite the weight reduction from changing the substrate material.
Solution Approach 2:
The patent changes the parameters of the material system by introducing a metallic layer with specific properties (thickness, composition) to the substrate. This parameter change allows the material to achieve the required strength and safety compliance while maintaining reduced weight, resolving the contradiction between weight reduction and safety compliance.
3Strength
If metallic layer is added to substrate, then strength-to-weight ratio improves, but manufacturing complexity increases
Solution Approach 1:
The metallic layer is applied as a thin film on the substrate, which simplifies the manufacturing process compared to creating thick metallic structures. The thin film approach maintains the strength-to-weight ratio improvement while minimizing manufacturing complexity, as thin film deposition is a well-established industrial process that can be integrated into existing production lines.
Data Source
AI summary
Described are fabrics or flexible composite materials for an inflatable safety product. The fabrics or flexible composite materials may include a substrate and a metallic layer. The substrate may define a surface. The metallic layer may be completely covering or discontinuous, and the metallic layer may cover at least one surface of the substrate.