Electroformed Lamination Plates for Registered Card Embossing
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Solution Overview
Problem
Existing methods for manufacturing card-shaped data carriers, such as identification cards, suffer from high scrap rates and scheduling issues due to registration problems in the post-lamination varnishing process, which interrupts the material flow and increases production time.
Innovation Solution
A method involving electroforming to create a press tool with a profile corresponding to the printed features on the card body, allowing for precise registration and alignment of embossing the overlay layer directly during lamination, eliminating the need for post-lamination varnishing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If post-lamination varnishing process is used to achieve precise registration of embossed features, then manufacturing precision is improved, but productivity deteriorates due to interrupted material flow and increased production time
Solution Approach 1:
The patent applies preliminary action by creating an electroformed master sheet with the precise profile beforehand. This master sheet is then used to create an electroformed tool that can directly emboss the overlay layer during lamination, eliminating the need for subsequent varnishing operations. The preliminary creation of the electroformed tool with exact registration features resolves the contradiction by enabling both high precision and continuous production.
Solution Approach 2:
The patent merges the lamination and embossing operations into a single simultaneous process. By using an electroformed tool that combines the lamination function with the embossing function, the overlay layer is laminated to the card body while being embossed with the precise profile in one continuous operation, eliminating the separate post-lamination varnishing step and enabling uninterrupted material flow.
2Manufacturing precision
If post-lamination varnishing process is used to create embossed appearance, then manufacturing precision is improved, but loss of time increases due to additional processing steps
Solution Approach 1:
The electroformed tool is prepared in advance with the exact profile needed for embossing. This preliminary preparation includes creating the master sheet with precise features, metalizing it, and electroforming the tool. Once this tool is ready, the actual card production can proceed continuously without time-consuming varnishing steps, thus reducing production lead time while maintaining feature alignment precision.
Solution Approach 2:
The patent enables continuous useful action by integrating embossing into the lamination process. The electroformed tool allows the overlay layer to be embossed with precise features during the lamination operation itself, maintaining continuous material flow and eliminating idle time between lamination and varnishing operations.
3Device complexity
If traditional lamination without embossing profile is used, then device complexity is reduced, but manufacturing precision deteriorates due to inability to register features
Solution Approach 1:
The patent replaces the chemical varnishing system with an electroformed mechanical tool system. Instead of using varnish and UV/heat curing equipment, the solution uses electroformed tools with precise mechanical profiles that directly emboss the overlay layer during lamination. This substitution maintains process simplicity while achieving superior feature registration precision through the inherent accuracy of electroforming technology.
Solution Approach 2:
The patent changes the fundamental parameter of how embossing is achieved - from chemical deposition (varnish) to mechanical displacement (electroformed tool). The electroformed tool introduces precise geometric parameters directly into the overlay layer during lamination, achieving feature registration without adding complex chemical processing steps.
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 reduces production costs and lead times by ensuring precise registration without chemical exposure to varnish, minimizing setup variations, and enabling continuous processing without interrupting the manufacturing cycle.
Implementation Method 1
the profile is provided by an electroformed layer of the press tool
Data Source
AI summary
The invention relates to a method of manufacturing a card-shaped data carrier, such as an identification card, and includes the steps of: providing a card body with printed features and with an overlay layer disposed over the printed features; providing a press tool having a profile corresponding to a predetermined shape registered to the printed features on the card body, wherein the profile is provided by an electroformed layer; and embossing the profile of the press tool in the overlay layer. A lamination plate is provided for embossing an overlay layer of such data carrier, including a profile with a predetermined shape. The profile is registered to printed features on the card body, and the profile is provided by an electroformed layer.