Textile Tab Sealing for Secure Data Pages
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Solution Overview
Problem
Existing methods for producing data pages in book-like documents, such as passports, often result in open cut edges due to textile band material curling, which weakens the tab interface and can be manipulated for forgery, and fail to maintain a sealed edge finish.
Innovation Solution
A method where a tab made of meltable textile band material is welded to a data carrier with sealing surfaces introduced at the end regions, melting the material to create a sealed edge finish, preventing curling and enhancing security by ensuring the tab remains integrated with the data carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a textile band material is used to form a tab and cut to size, then the tab can be attached to the data carrier, but the cut edges become open and the textile material curls up, weakening the tab interface
Solution Approach 1:
The patent applies heat to change the physical state of the textile band material at the cut edges, melting the thermoplastic coating to seal the edges and prevent curling. This parameter change (from solid to melted state and back) resolves the edge finish problem while maintaining ease of manufacture.
Solution Approach 2:
The patent replaces mechanical edge finishing methods with a thermal process. Instead of using mechanical means to close the cut edges, heat is applied to melt the thermoplastic material and seal the edges, providing a more effective solution to the curling problem.
2Productivity
If the tab interface is left open, then the manufacturing process is simpler, but the interface can be manipulated for forgery, compromising security
Solution Approach 1:
By applying heat to melt the thermoplastic material at the cut edges, the patent creates a sealed interface that prevents manipulation. This parameter change adds a security feature without significantly complicating the manufacturing process, as the heating can be integrated into existing production lines.
3Manufacturing precision
If sealing surfaces are introduced by melting the textile material, then a closed edge finish is achieved and curling is prevented, but additional processing steps and energy are required
Solution Approach 1:
The patent utilizes the thermoplastic properties of the coating material to enable sealing through controlled heating. The material transitions from solid to melted state during sealing and then solidifies to form a closed edge finish. This approach, while adding processing steps, leverages the material's inherent properties to achieve the desired precision.
Solution Approach 2:
The patent employs a composite textile band material with a thermoplastic coating layer. This composite structure enables the sealing function, as the thermoplastic coating melts and bonds the textile fibers together at the cut edges, creating a closed edge finish that prevents curling.
4Reliability
If the tab material is melted to form sealing surfaces, then the edges are sealed and integrated with the data carrier, but the material properties change during processing
Solution Approach 1:
The patent intentionally changes the material parameters by heating the thermoplastic coating to its melting point, allowing it to flow and seal the cut edges. After cooling, the material returns to its solid state with improved edge integrity. This controlled parameter change enhances tab integration while maintaining material stability through the phase transition cycle.
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 method achieves a closed edge finish at the tab interfaces, preventing curling and fraying, thereby enhancing the security and integrity of the data page by ensuring the tab remains securely attached to the data carrier, making it difficult to separate and reducing the risk of forgery.
Implementation Method 1
At least one sealing surface is introduced into the respective end region, within which the cutting line for the final format of the data carrier runs. As a result, the interface of the textile band material to form the tab in the final format is sealed at the respective front end areas and a closed edge finish of the cut textile band material is achieved.
Implementation Method 2
To form the sealing surface, at least one surface of the textile band material is melted. The one free surface in the overlap area and both surfaces in the protruding area of the tab are melted.
Data Source
Figure 1~2
Figure 3~9
Figure 10~11
AI summary
The invention relates to a method for producing a data page (17) and a book block for a book-type document, and to a data page for a book-type document (11), in particular a value and/or security document, which document comprises a data carrier (20) having a tab (23) fastened thereto, said tab being made of a textile strip material, the textile strip material for forming the tab (23), which textile strip material is different from the data carrier (20), being positioned along a longitudinal side (32) of the data carrier (20) in such a way that an overlap region (30) is formed and a region (31) protruding beyond the data carrier (20) being formed, and the textile strip material and the data carrier (20) being connected to each other in the overlap region (30). The data carrier (20) has a raw size, the end edges (54, 55) of which have a greater distance than the distance of cut lines (57) for forming side edges (34, 35) of the data carrier (20) in the final format, and said data carrier (20) is merged with the tab (23). At least in one end region of the tab (23), a sealing surface (38) is introduced and is positioned in such a way that the cut line (57) for the final format of the data page (17) extends within each sealing surface (38), or, at the supplied tab (23), a sealing compound is introduced in protruding region (31) of the textile strip material in order to form a sealing surface (38) and said introduced sealing surface (38) is introduced at least in the end regions of the tab (23).