Insert Sheet Binding with Segmented Threads
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Solution Overview
Problem
Existing book-like identification documents, such as passports, lack sufficient security against forgery, particularly in the integration of personalization data pages and seams, which can be easily manipulated or tampered with.
Innovation Solution
The integration of at least two separate threads laminated between layers of the data page, extending into the seam area and protruding freely, forming a secure and durable binding without the need for additional punching, and optionally incorporating security features and varying thread configurations for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single continuous strap is used for binding the data page, then the binding is simple and the document structure is maintained, but the security against forgery is insufficient and manipulation is easier
Solution Approach 1:
The continuous strap is segmented into multiple individual threads (at least three) that are arranged separately from one another. Each thread is laminated between the layers of the data page and extends into the seam area, creating multiple independent binding elements that increase security against forgery while maintaining a manageable binding structure.
2Reliability
If the seam is introduced into the paper substrate extending completely along the seam area, then the personalization data page is securely integrated, but the document becomes more vulnerable to manipulation and forgery
Solution Approach 1:
The seam area binding is segmented into multiple separate threads instead of a single continuous strap. These individual threads are laminated between the data page layers and extend into the seam area, creating a more secure integration that is difficult to manipulate or tamper with while maintaining proper integration of the personalization data page.
3Reliability
If additional punching is performed in the layer for loop formation, then the binding is more secure, but the layer thickness increases and production becomes more complex
Solution Approach 1:
The threads are pre-laminated between the layers of the data page during the lamination process, eliminating the need for subsequent punching operations. The threads extend directly into the seam area from the lamination step, securing the binding before final assembly and avoiding additional production steps.
4Reliability
If multiple threads are used to form the seam area, then security against forgery increases and premature tearing is prevented, but the binding structure becomes more complex
Solution Approach 1:
The binding is divided into multiple separate threads (at least three) that are arranged in a systematic pattern. Each thread is individually laminated between the data page layers and extends into the seam area, creating redundant binding paths that prevent premature tearing and increase anti-forgery security while maintaining a structured but manageable configuration.
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
This solution significantly increases security against forgery by creating a robust and flexible binding mechanism that is difficult to manipulate, while maintaining a thin and bendable document structure, and can include security features like metallization or holograms for added protection.
Implementation Method 1
the seam area is formed by at least two threads arranged separately from one another, which are laminated exclusively between two layers of a data page
Data Source
Figure 1~2
Figure 3~4c
AI summary
The invention relates to an insert sheet, particularly for a book-like document (11) that comprises a data page (18) with a data area (33) consisting of at least one layer (26) as a core layer and of at least one further layer (28) of a thermoplastic material, and also with a seam area (23) for holding a seam (16) for binding the insert sheet (17) into a book-like document (11), wherein the seam area (23) is formed by at least two threads (31) that are arranged separately from one another and that are laminated exclusively between two layers (26, 27, 28) of the data page (18), so that the threads (31) protrude clear of a longitudinal edge (32) of the data page (18), which longitudinal edge adjoins the seam area (23).