Automated Adhesive Layer Transfer for Security Document Assembly
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Solution Overview
Problem
Existing methods for applying adhesive layers to adhesive-free components in identification, value, or security documents are inefficient, leading to prolonged cycle times and reduced processing accuracy.
Innovation Solution
A device comprising a first roll holder, punching device, transport path, and associated components for automated application of adhesive layers, including a heating device to activate adhesion and a cooling device to facilitate detachment from the carrier film, ensuring precise and rapid lamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adhesive layers are applied manually or with conventional methods, then processing accuracy can be maintained, but production speed is slow and cycle time is prolonged
Solution Approach 1:
The adhesive layers are pre-applied to the carrier film in advance, before the actual assembly process. This preliminary preparation allows for rapid subsequent application to the adhesive-free component without requiring time-consuming on-site adhesive application, thereby reducing cycle time and increasing productivity
Solution Approach 2:
The manual or conventional mechanical adhesive application process is replaced with an automated system where adhesive layers are pre-positioned on the carrier film and then transferred automatically to the adhesive-free component. This substitution of manual operations with automated mechanisms significantly increases production speed while maintaining processing accuracy
2Manufacturing precision
If adhesive layers are applied with conventional methods, then processing can be completed, but manufacturing precision and processing accuracy are reduced
Solution Approach 1:
The adhesive application process is segmented into distinct stages: adhesive layer formation on the carrier film, positioning of the adhesive-free component, and detachment of the carrier film. This segmentation allows each stage to be optimized independently, ensuring high processing accuracy in adhesive placement while maintaining overall production efficiency through automated transitions between stages
3Ease of manufacture
If the carrier film is not properly detached, then the adhesive layer remains on the component, but the carrier film creates complexity in the process
Solution Approach 1:
The carrier film is extracted or removed from the adhesive layer through a controlled detachment process at a designated detachment edge. This extraction allows the adhesive layer to remain on the adhesive-free component while the carrier film is separated and can be reused or disposed of, simplifying the overall manufacturing process by eliminating the need for complex carrier film integration
Solution Approach 2:
The carrier film acts as an intermediary carrier that facilitates the adhesive layer application process. It provides a temporary support surface for the adhesive layer during handling and positioning, then serves as a removable template that simplifies the detachment process. This intermediary approach reduces process complexity by providing a clear separation interface between the adhesive layer and the final component
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 solution enables accelerated production with increased processing accuracy and reduced cycle times, while maintaining high automation levels, thereby improving efficiency and cost-effectiveness in manufacturing these documents.
Implementation Method 1
a heating device associated with the transport path. This heating device can heat the component and/or the adhesive layer located on the carrier film to an activation temperature at which the adhesive layer develops adhesive properties
Implementation Method 2
a cooling device downstream of the component feed area. This cooling device can cool the component with the adhesive layer to a temperature at which the adhesive layer can be easily detached from the carrier film
Data Source
Figure 1~2b
Figure 2c~2f
Figure 3
AI summary
The invention relates to a device (200) for attaching an adhesive layer (301) to an adhesive-free constituent part (102, 104) of an identification, value or security document (100), with a first reel receptacle (210) which is configured to receive a first reel (300) with a carrier film (302) and an adhesive strip (303) which is attached to the carrier film (302), with a punching device (220) which is configured to punch out individual adhesive layers (301) from the adhesive strip (303) which is attached to the carrier film (302), and with a transport path (240) along which the carrier film (302) with the punched-out adhesive layer (301) can be guided or is guided, which transport path (240) comprises a constituent-part feed region (241), in which the adhesive-free constituent part (102, 104) can be placed onto one of the punched-out adhesive layers (301), and which transport path (240) comprises a peel-off edge (247) over which the carrier film (302) can be guided or is guided in such a way that the adhesive layer (301) is peeled off from the carrier film (302), and that the adhesive layer (301) remains on the constituent part (102, 104). Moreover, the invention relates to a corresponding method.