Security Paper Weakness Lines Destroy Features on Splitting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current security papers and documents of value can be split and reused for counterfeiting purposes, as existing methods do not effectively prevent damage to security features during splitting, allowing counterfeiters to combine genuine and counterfeit halves.
Innovation Solution
The security paper features lines of weakness that extend perpendicularly into the paper substrate, ensuring that security features are destroyed during splitting, making the resulting sub-layers unusable for counterfeiting, with these lines produced through methods like laser cutting and designed to be either visible or invisible depending on the application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If security paper is made thin to reduce cost and improve ease of manufacture, then manufacturing cost decreases and ease of manufacture improves, but the paper becomes susceptible to splitting and counterfeiting
Solution Approach 1:
The patent applies preliminary action by embedding security features (watermarks, security threads, holographic elements) into the paper substrate during the papermaking process itself, before the paper is cut or processed further. This ensures that anti-counterfeiting properties are inherently built into the paper structure, making it resistant to splitting and counterfeiting even when made thin for cost efficiency
2Reliability
If security features are made visible to ensure authenticity detection, then reliability of authentication improves, but the document becomes more complex and harder to produce
Solution Approach 1:
The patent applies local quality by making security features visible only under specific conditions or from specific angles. For example, watermarks are visible only when held up to light, security threads become visible when the document is tilted, and holographic elements display different images at different angles. This allows authentication reliability to be maintained while keeping the overall document design relatively simple and straightforward to produce
3Strength
If paper substrate is strengthened to prevent splitting, then resistance to splitting improves, but the paper becomes more difficult to process and manufacture
Solution Approach 1:
The patent applies composite materials by combining the paper substrate with other materials that provide strength and anti-counterfeiting properties. Security threads made of metal or plastic are embedded within the paper, and watermark areas use different paper densities or compositions. These composite structures increase resistance to splitting and counterfeiting while maintaining ease of processing during manufacture, as the additional materials are integrated into the papermaking process itself
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 effectively prevents the reuse of split security papers by ensuring that security features are destroyed during attempted splitting, rendering the sub-layers unusable for counterfeiting purposes, while also allowing for design flexibility in visibility and recognition.
Implementation Method 1
lines of weakness in the first main surface which extend into the carrier substrate
Data Source
Figure 1~4
Figure 5~8
Figure 9~12
AI summary
The invention relates to a security paper for producing a security document, comprising a carrier substrate with a first main surface and an opposing second main surface and at least one weakening line in the first main surface extending into the carrier substrate without reaching the second main surface, and at least one security feature on the first main surface or in the volume of the carrier substrate, wherein the weakening line extends into the carrier substrate at least so far that, when the carrier substrate is split between the first main surface and the second main surface into a first substrate sublayer and a second substrate sublayer, the carrier substrate tears at the weakening line, and wherein the weakening line and the security feature are arranged relative to each other such that, when the carrier substrate tears at the weakening line, the security feature is separated into at least two feature parts.which are located on different substrate sublayers. The invention further relates to a security document based on the security paper and to methods for producing the security paper and the security document.