Security Document Polymer Composite Inkjet Laser Engraving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing security and value documents fail to securely integrate colored personalized information, as the protective film does not have a monolithic connection with the substrate, making the information vulnerable to manipulation.
Innovation Solution
A method involving a polymer layer composite formed from a polymer layer component composite and a polymer cover layer, where personalized information is applied via inkjet printing and subsequently joined through thermal lamination, with additional information introduced using laser engraving, creating a securely integrated, monolithic composite that prevents manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective film is applied to protect the inkjet printing layer, then the information is protected against mechanical and chemical damage, but the protective film does not have a monolithic connection with the substrate, making the information vulnerable to manipulation
Solution Approach 1:
The patent merges the protective film with the substrate by applying a polymer cover layer that is thermally laminated to the polymer layer composite. This creates a monolithic connection where the protective layer is materially bonded to the substrate, eliminating the vulnerability to manipulation while maintaining protection against mechanical and chemical damage.
Solution Approach 2:
The patent uses a composite material structure consisting of a polymer layer composite (substrate) and a polymer cover layer (protective film). This composite structure ensures that the protective layer is integrated into the substrate through thermal lamination, creating a monolithic connection that prevents manipulation while providing necessary protection.
2Reliability
If laser engraving is used to add personalized information, then the information is introduced into internal layers for high protection, but colored personalized information cannot be introduced
Solution Approach 1:
The patent segments the personalization process into two distinct parts: colored information is applied via inkjet printing to the polymer layer composite, while additional personalized information is added by laser engraving. This segmentation allows each method to perform its specialized function - inkjet for colored information and laser for secure internal layer engraving - without limiting either capability.
Solution Approach 2:
The patent combines inkjet printing and laser engraving into a single integrated personalization process. The inkjet printing layer is applied to the polymer layer composite, followed by thermal lamination with a polymer cover layer, and then laser engraving is performed on the laminated structure. This merging allows both colored information and secure internal layer engraving to coexist in the same document.
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 securely integrates colored personalized information within a monolithic composite, providing high security against manipulation by ensuring the polymer layers are materially bonded, making it impossible to detach the cover layer and thus protect the information.
Implementation Method 1
a first piece of information is applied to the polymer layer component composite by means of an inkjet printing process as a colored inkjet printing layer
Implementation Method 2
the polymer cover layer is applied to the inkjet printing layer and joined to the polymer layer component composite
Implementation Method 3
joined to the polymer layer component composite by thermal lamination
Implementation Method 4
laser engraving is used to add second personalized information to the P obtained in stage B) olympic layer composite
Data Source
Figure 1a~1h
Figure 2a~2h
Figure 3~4
AI summary
The invention relates to a method for producing a security and/or valuable document containing a polymer layer composite or consisting thereof. Said polymer layer composite is formed from a polymer layer partial composite and a polymer cover layer and the polymer layer partial composite and/or the polymer cover layer contains a laser sensitive component. Said method consists of the following steps: A) first personalised information is applied to the polymer layer partial composite by means of an inkjet printing method as a coloured inkjet printed layer; B) the polymer cover layer is applied to the inkjet printed layer and is joined to the polymer layer partial composite by thermal lamination; and C) second personalised information is inscribed into the polymer layer composite of the security and/or valuable document, obtained in step B), by means of laser engraving. The invention also relates to a security and/or valuable document that can be produced according to said method.