Electronic Passport Data Page Composite Structure
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Solution Overview
Problem
Existing electronic identification documents, such as passports, face issues with high rigidity leading to breakage under stress and inadequate connection resistance, and are vulnerable to counterfeiting.
Innovation Solution
A flexible layer is integrated at the seam region of the plastic data sheet, enhancing mechanical resistance and connection strength by gluing and sewing the data page into the booklet, with the RFID chip positioned separately on the cover for improved security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the data page is made of rigid polycarbonate material, then the structural integrity and security features can be maintained, but the page becomes prone to breakage and cracking under stress from repeated torsions and bendings
Solution Approach 1:
The data page is constructed as a composite structure with a rigid polycarbonate layer for security features and a flexible polyester layer for mechanical durability. This composite approach allows the page to maintain its structural integrity while resisting breakage and cracking under stress from repeated torsions and bendings.
Solution Approach 2:
The flexible polyester layer is specifically positioned at the seam region where the data page connects to the booklet, providing localized flexibility and stress absorption. This local quality enhancement allows the connection point to withstand mechanical stress without compromising the overall structural integrity of the rigid data page.
2Ease of manufacture
If the data page is connected to the booklet using traditional sewing methods, then the connection can be made, but the connection resistance is insufficient and the connection may fail under stress
Solution Approach 1:
The connection system combines multiple reinforcement methods: sewing threads are embedded within a flexible polyester layer that is laminated to the data page. This merging of sewing and laminating processes creates a composite connection structure that provides superior connection resistance compared to traditional sewing alone.
Solution Approach 2:
The connection structure uses a composite approach by embedding sewing threads within a flexible polyester layer and laminating this composite structure to the rigid polycarbonate data page. This multi-layer composite connection provides enhanced strength and resistance to mechanical stress.
3Device complexity
If the RFID chip is embedded inside the polycarbonate data page, then the document structure is simplified, but the security against counterfeiting is reduced
Solution Approach 1:
The document is segmented into distinct functional components: the rigid polycarbonate data page contains security features and identification data, while the flexible polyester layer provides mechanical durability and connection flexibility. The RFID chip is embedded in the flexible polyester layer rather than the rigid polycarbonate layer, creating separate functional zones that enhance both security and durability.
Solution Approach 2:
The RFID chip is embedded in the flexible polyester layer as part of the composite structure, separating it from the rigid polycarbonate data page. This composite arrangement maintains document simplicity while enhancing security, as the chip is protected within the flexible layer that is laminated to the data page, making tampering more difficult.
Data Source
AI summary
An electronic passport in the form of a booklet, bearing a plurality of sheets sewn there among at the respective longitudinal center lines is described. The electronic passport has a cover sheet and a data sheet. The cover sheet has a layer made of fabric, an electronic inlay and an internal flyleaf layer and embedding an electronic data storage means provided with an antenna for radio transmission. The data sheet is made by a first and a second layer of plastic material. The data sheet defines a data page bearing identification data of a subject and a connecting page made fixed with the cover sheet, and also comprises an intermediate layer of flexible material extending at the center line of sewing.