Non-Blocking Adhesive Textile Composite for Multi-Threat Armor
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Solution Overview
Problem
Existing materials for personal protection, such as body armor, struggle to provide effective resistance against multiple threats like spikes, knives, shrapnel, and bullets while maintaining flexibility, light weight, and affordability.
Innovation Solution
A multi-threat protection composite comprising woven textile layers coated with a non-blocking pressure-sensitive adhesive (NonB-PSA) containing a high concentration of inorganic particles, which enhances flexibility and resistance to penetration by incorporating a high concentration of inorganic particles to prevent blocking and improve mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional body armor materials are used to provide protection against spikes, knives, shrapnel, and bullets, then protection effectiveness is improved, but weight increases and flexibility decreases
Solution Approach 1:
The patent uses a composite structure consisting of multiple textile layers (including aramid and polyethylene fibers) combined with a NonB-PSA coating containing inorganic particles. This composite approach provides multi-threat protection against spikes, knives, shrapnel, and bullets while maintaining flexibility and reducing weight compared to traditional rigid body armor materials.
Solution Approach 2:
The NonB-PSA coating is applied specifically to the surface of the textile layers, providing localized protection against penetration threats without requiring the entire structure to be heavy or rigid. The inorganic particles in the coating provide targeted resistance to spike and knife threats while preserving the flexibility of the underlying textile layers.
2Reliability
If traditional body armor materials are used to provide protection against spikes, knives, shrapnel, and bullets, then protection effectiveness is improved, but flexibility and comfort decrease
Solution Approach 1:
The composite structure combines flexible textile layers with a surface coating, allowing the material to bend and move with the body while providing protection. The textile layers maintain their natural flexibility while the NonB-PSA coating adds protective functionality without rigidity.
Solution Approach 2:
The NonB-PSA coating forms a thin, flexible film on the textile layers that provides protection against penetration threats without creating a rigid structure. The coating maintains the flexibility of the underlying fabric, allowing the armor to conform to body movements and maintain comfort.
3Reliability
If traditional body armor materials are used to provide protection against multiple threats, then protection effectiveness is improved, but cost increases
Solution Approach 1:
The patent uses a combination of textile layers and a coating material that can be applied through existing manufacturing processes. The NonB-PSA coating with inorganic particles provides multi-threat protection at a lower cost than traditional rigid body armor materials, making the protection more affordable while maintaining effectiveness.
4Reliability
If a coating is applied to textile layers to provide protection, then resistance to penetration is improved, but blocking between layers increases
Solution Approach 1:
The patent removes the blocking component from the coating formulation by using a NonB-PSA (non-blocking pressure-sensitive adhesive) instead of traditional adhesive coatings. This extraction of the blocking property allows the coating to provide protection against penetration while preventing unwanted adhesion between layers, maintaining flexibility and comfort.
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 achieves high resistance to spikes, knives, and optionally ballistic threats, maintaining flexibility and comfort, while achieving pass ratings in relevant safety standards like NIJ standards, and is cost-effective.
Implementation Method 1
a non-blocking (rating of 1 according to ASTM D751-06) pressure sensitive adhesive (NonB-PSA) composition comprising (a) a plurality of first inorganic particles, and (b) a pressure sensitive adhesive
Data Source
Figure 1
AI summary
A multi-threat protection composite containing at least one textile layer having an upper and lower surface and a non-blocking pressure sensitive adhesive (NonB-PSA) composition on at least the upper surface of each layer. The NonB-PSA coating contains a pressure sensitive adhesive and a plurality of first inorganic particles, wherein the ratio by weight of the first inorganic particles to the pressure sensitive adhesive is greater than about 1, and wherein the NonB-PSA coating is in an amount of at least about 10 g/m2 on each surface the NonB-PSA coating is located.