Modular PVC Retroreflective Identification Patch
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Solution Overview
Problem
Existing identification systems for military and law enforcement personnel are inadequate as they are limited to infrared visibility, fragile, and lack modern technological advancements, leading to misidentification and safety concerns under various light conditions.
Innovation Solution
The development of polyvinyl chloride (PVC) protected retroreflective identification systems that provide visibility in multiple light spectrums, including visible light, and incorporate a durable PVC layer with customizable design and optional light sources for enhanced visibility and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional reflective devices with screen printed ink or fabric stencils are used, then identification features can be applied to gear, but the features are frail, fall apart, fade and lose utility over short periods when exposed to combat conditions
Solution Approach 1:
The patent combines retroreflective material with PVC coating to create a composite identification system that integrates both visibility functionality and protective durability. The PVC layer protects the retroreflective material from environmental damage while maintaining identification visibility.
Solution Approach 2:
The patent transforms the identification system by applying PVC coating that changes the physical and chemical properties of the surface, making it resistant to fading, cracking, and degradation from UV exposure and weather conditions, thereby extending service life.
2Adaptability or versatility
If traditional reflective markers are used, then visibility in infrared spectrum or high visibility in normal visible light is achieved, but identification is limited to one type of light only
Solution Approach 1:
The retroreflective material is designed to perform multiple functions by reflecting both infrared and visible light spectrums, allowing the same identification system to be effective across different lighting conditions and detection systems without requiring separate markers.
3Manufacturing precision
If uniform markers are used, then simple identification is provided, but design detail is lacking which is needed for positive identification of operational personnel
Solution Approach 1:
The PVC coating is applied with varying opacities and patterns in different local areas to create detailed identification features such as text, symbols, and graphics. This allows high-detail customization while maintaining the overall simplicity of the retroreflective base system.
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 PVC retroreflective systems enhance safety by ensuring personnel can be identified in various light conditions, reducing misidentification and increasing durability, while allowing for customizable and high-visibility designs that improve recognition in both emergency and routine situations.
Implementation Method 1
modular PVC infrared (Mod-PVC-IR) systems are composed of flexible PVC plastisol combined with retroreflective sheeting material
Implementation Method 2
The final result is modular patches that can be worn on the uniforms of military or law enforcement operational personnel to increase visibility of these individuals in various light conditions
Data Source
AI summary
A multi-layer identification patch includes a reflective background layer comprising a front side to face away from a garment when the multi-layer identification patch is affixed to the garment, and a mask layer secured over the front side of the reflective background layer. The mask layer comprises (a) an opaque layer of flexible polyvinyl chloride (PVC) and (b) a void in the opaque layer of flexible PVC. The void has a shape that forms an identification symbol. The opaque layer of flexible PVC is secured over a first portion of the reflective background layer, thereby fixing the void that forms the identification symbol over a second portion of the reflective background layer, and thereby enabling the second portion of the reflective background layer to reflect light through the void in the shape of the identification symbol. Other embodiments are described and claimed.