Fire-Resistant Laminated Data Carrier with Embedded Metal Plate
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Solution Overview
Problem
Conventional plastic security documents, such as cards and passports, are not resistant to high temperatures and melt during fires, rendering them unusable for identifying victims, while metal identification tags are cumbersome for civilians and cannot be integrated with plastic cards.
Innovation Solution
A laminated data carrier with plastic layers and a non-flammable metal element of thickness above 50 micrometers and a melting point above 900°C, featuring personalized marks and a mesh-like structure, which can be embedded between layers or in cut-out holes, providing resistance to high temperatures and visibility after exposure to fire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thin metal layer (5-10 micrometers) with low melting temperature is used to provide watermark security features, then the card achieves aesthetic security functionality, but the card melts at temperatures below 1100°C and cannot resist typical fire conditions (1200°C)
Solution Approach 1:
The patent changes the thickness parameter of the metal layer from 5-10 micrometers to above 50 micrometers, and selects metal materials with melting points above 900°C (such as aluminum alloy, stainless steel, or titanium alloy), thereby transforming the metal layer's properties to achieve fire resistance while maintaining security document functionality
Solution Approach 2:
The patent creates a composite structure by laminating the thick fire-resistant metal layer between plastic layers, combining the fire resistance of metal with the flexibility and security features of plastic documents, achieving both fire survival capability and document functionality
2Reliability
If metal identification labels (dog tags) with dimensions 5 cm x 2.8 cm and thickness 1 mm are used for high temperature resistance, then identification survives fire conditions, but the labels are cumbersome for civilians and cannot be integrated with plastic identification cards
Solution Approach 1:
The patent merges the fire-resistant metal identification element with plastic security document layers through lamination, combining the advantages of both materials: the fire resistance of metal and the convenience/portability of plastic cards, eliminating the need for separate dog tags
Solution Approach 2:
The patent embeds the metal layer with personalized marks inside the plastic security document structure, nesting the fire-resistant identification element within the document layers, making it compact and convenient for carrying while maintaining fire survival capability
3Ease of operation
If plastic layers are used for document flexibility and security features, then the document provides useful security functionality, but the plastic layers melt at high temperatures and destroy the identification function
Solution Approach 1:
The patent creates a composite laminated structure where fire-resistant metal layers are embedded between plastic layers, combining the flexibility and security features of plastic with the fire resistance of metal, allowing the document to maintain both functionality and fire survival capability
Solution Approach 2:
The patent applies different material properties to different parts of the document: plastic layers provide flexibility and security features in non-critical areas, while thick fire-resistant metal layers provide thermal stability in the identification element areas, achieving localized optimization of properties
Data Source
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AI summary
A data carrier in form of a laminated document (101) comprising plastic layers, comprising a non-flammable element (120) laminated between the plastic layers (111, 112) and having a form of a plate with personalized identifying marks (121) forming holes in the plate, wherein the non-flammable element (120) has a thickness above 50 micrometers and a melting point above 900°C.