Flexible Textile Layer for Rigid Data Page Binding
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Solution Overview
Problem
Existing methods for binding rigid data pages in booklets, such as passports, often result in incomplete closure and brittleness due to the rigidity of materials like polycarbonate, and require additional components for mechanical connection, increasing complexity and thickness.
Innovation Solution
A method involving a flexible textile layer with mesh openings or apertures that is laminated or adhesively bonded to the data carrier, eliminating the need for additional mechanical parts and providing a durable, non-detachable connection, which can be sewn into the booklet, enhancing security against manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid data carrier made of polycarbonate is bound into the booklet, then security against manipulations is improved, but the booklet cannot be closed completely and fractures can arise in the plastic
Solution Approach 1:
The patent applies this principle by covering the rigid data carrier with a flexible plastic layer that has aperture openings. This flexible layer allows the booklet to bend and close properly while the rigid data carrier underneath maintains security against manipulations. The flexible layer acts as a protective shell that accommodates mechanical stress during booklet operation.
Solution Approach 2:
The patent combines rigid polycarbonate data carrier material with a flexible plastic covering layer to create a composite structure. This composite material approach allows the data page to maintain both security (from the rigid core) and flexibility (from the outer layer), resolving the contradiction between security and ease of operation.
2Reliability
If additional components like bands and plastic strips are used to connect the data carrier, then the data carrier can be bound in, but the complexity of production increases and the thickness of the data page increases
Solution Approach 1:
The patent merges the functions of the rigid data carrier and the flexible covering layer into a single integrated structure. The flexible layer is directly bonded to the data carrier surface, eliminating the need for separate bands, strips, or mechanical connectors. This reduces production complexity and maintains a sleek profile without additional components.
Solution Approach 2:
The patent replaces traditional mechanical connection methods (bands, strips, studs, apertures) with a bonding system where the flexible plastic layer is adhesively bonded or welded to the data carrier. This substitution eliminates complex mechanical assembly steps and reduces the number of parts required.
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 approach allows for a simpler, more secure binding of data pages without additional components, maintaining booklet flexibility and integrity while significantly increasing security against forgery and manipulation.
Implementation Method 1
The flexible layer is bound in by lamination. As a result, a particularly intimate and substantially non-detachable connection between the flexible layer and the data carrier can be achieved.
Implementation Method 2
The apertures are formed in particular by mesh openings of a textile. In particular during lamination, material of the data carrier penetrates into the apertures or mesh openings.
Data Source
AI summary
The booklet comprises a number of sheets between a cover, and each sheet has a front side and a rear side. At least one data page is provided that is joined to the cover in a fixed manner. The data page comprises a flexible layer and this flexible layer projects with an area out of a data carrier. On this area, the data page is joined to the cover and to the remaining sheets. The flexible layer is flatly joined to at least one other layer, for example, by welding or bonding and is thus inseparably bound without a mechanical joining part.