Security Paper Manufacturing with Depressed Web Integration
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Solution Overview
Problem
Existing manufacturing processes for multi-layer safety papers are limited in the location and type of safety elements that can be introduced, restricting the flexibility and effectiveness of authenticity features such as watermarks and embedded safety threads.
Innovation Solution
A manufacturing device and process that form two paper railways using wet sections of a paper machine, with a facility for creating depressions or holes in the first paper railway to precisely apply safety elements, allowing for customizable and secure integration of various safety features like watermarks, safety threads, and melier fibers into the paper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security elements are applied to the first paper web before couching, then the security elements can be precisely positioned and securely integrated into the multi-layer paper, but the device complexity increases due to the need for additional application equipment and process coordination
Solution Approach 1:
The patent applies security elements to the first paper web in advance, before the couching process joins the two paper webs. This preliminary application allows precise positioning and secure integration of security features (such as watermarks, security threads, and melier fibers) into the multi-layer paper structure, ensuring they are properly embedded before the layers are combined.
2Adaptability or versatility
If multiple types of security elements are incorporated into the paper web, then the authenticity verification capabilities are enhanced, but the manufacturing process complexity increases
Solution Approach 1:
The patent incorporates multiple types of security elements (watermarks, security threads, melier fibers, and other authenticity features) into a single manufacturing process. The system is designed to handle diverse security features through a unified approach, applying different materials and structures to the first paper web before couching, thereby enhancing versatility without proportionally increasing process complexity.
3Reliability
If security elements are precisely positioned on the first paper web, then the authenticity features are more effective, but the manufacturing precision requirements increase
Solution Approach 1:
The patent positions security elements on the first paper web before the couching process. This preliminary positioning allows for precise placement of authenticity features (such as watermarks and security threads) while the paper web is still in a manageable state, facilitating accurate positioning without requiring extremely high precision during the final multi-layer assembly.
Data Source
Figure 1~2
Figure 3~4
Figure 5A~5B
AI summary
The invention relates to a manufacturing device for a multi-layer security paper (4) comprising: a first wet section (8) which forms a first paper web (16), and a second wet section (10) which forms a second paper web (14), a device (32b) for applying security elements (2) to the first paper web (16), and a couching device (24) for joining the first and the second paper webs (16, 14) to form a complete paper web (26), wherein the couching device (24) is arranged downstream of the device (32b) for applying security elements.A device for producing indentations and/or holes in the first paper web (16) (i) comprises the device for applying security elements (2); or (ii) is arranged upstream of the device (32b) for applying security elements (2), produces indentations in the first paper web (16) and forms each indentation (64) to receive one of the security elements (2) and spaced apart from other indentations (64), wherein the device (32b) for applying each security element (2) is placed in one of the indentations (64).