Multilayer Composite Material for Ballistic Protection
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Solution Overview
Problem
Current ballistic blankets lack improvements in strength-to-weight ratio, thickness reduction, and aesthetics, despite existing technologies using high-performance fibers and materials.
Innovation Solution
A structural multilayer composite material comprising a layer of leather in contact with a monolayer of parallel fibers and a matrix material, with optional additional monolayers and polymeric film layers, offsetting fiber directions and using high-strength synthetic fibers like UHMWPE, and a manufacturing process involving compression at high pressure and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional ballistic blanket materials are used, then basic protection is provided, but strength-to-weight ratio is insufficient
Solution Approach 1:
The patent uses a composite structure combining leather layers with monolayer fabric layers containing high-strength fibers (aramid, UHMWPE). This composite approach achieves superior strength-to-weight ratio by integrating materials with complementary properties: leather provides durability and aesthetics, while synthetic fiber monolayers provide ballistic protection with reduced weight compared to conventional single-material constructions.
Solution Approach 2:
The patent applies different materials and fiber orientations to different regions and layers of the ballistic blanket. Each monolayer contains fibers oriented in specific directions (0°, 45°, 90°, etc.) to address different stress vectors, while leather layers provide localized aesthetic and protective qualities. This localized optimization of material properties enhances overall strength-to-weight ratio.
2Length of stationary object
If conventional ballistic blanket designs are used, then basic coverage is provided, but thickness is excessive
Solution Approach 1:
The patent divides the ballistic blanket into multiple thin monolayer fabric layers, each with a specific fiber orientation (e.g., 0°, 45°, 90°, 135°). By segmenting the protective function across multiple oriented layers rather than using fewer thicker layers, the design achieves reliable ballistic protection with reduced overall thickness. Each layer contributes to stopping different trajectory angles of projectiles.
Solution Approach 2:
The combination of leather layers with thin monolayer fabric layers creates a composite structure that provides adequate protection in a thinner profile. The leather layers can be optimized for minimal thickness while maintaining durability, and the synthetic fiber monolayers provide ballistic protection with precise thickness control, together achieving reduced thickness without sacrificing reliability.
3Shape
If conventional materials are used, then basic functionality is achieved, but aesthetics are insufficient
Solution Approach 1:
The patent combines leather layers with monolayer fabric layers to achieve both aesthetic and strength requirements. Leather provides desirable aesthetic qualities (grain, color, texture) while the synthetic fiber monolayers (aramid, UHMWPE) provide superior strength and ballistic protection. The composite structure allows aesthetic leather surfaces to be integrated with high-strength internal layers.
Solution Approach 2:
The leather layers serve multiple functions: providing aesthetic appearance, offering durability and abrasion resistance, and contributing to structural integrity. The monolayer fabric layers simultaneously provide ballistic protection and maintain flexibility. This multi-functionality allows the blanket to meet aesthetic requirements without compromising strength.
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 composite material achieves enhanced strength, reduced thickness, and improved aesthetics, making it suitable for various applications such as footwear, apparel, and protective gear while maintaining flexibility and durability.
Implementation Method 1
compressing the assembly at a pressure of at least 5 bar, preferably at a pressure of at least 6 bar, and temperature between 35 and 120° C.
Data Source
AI summary
The invention relates to a structural multilayer composite comprising a layer of leather in contact with at least one monolayer comprising parallel aligned fibers and a matrix material. The composite may further comprise film layer(s) that may be breathable and/or waterproof. The structural multilayer composite material is suitable for use in clothing and outdoor gear and apparel.