Stabilizing Agent for Data Carrier Chip Gap Stress
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Solution Overview
Problem
The durability of contactless data carriers is compromised due to mechanical tensions between the chip and the data carrier body, leading to cracks and impaired electrical functionality during long-term use, as existing manufacturing methods fail to adequately compensate for these tensions during the lamination process.
Innovation Solution
A method involving the application of a stabilizing agent into the gap of the data carrier body before lamination, which remains flexible and non-reactive until after lamination, allowing the chip to be securely integrated without mechanical tensions, using a stabilizing agent that can be activated post-lamination to form a strong adhesive connection without introducing stress during the lamination process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the chip is integrated into the data carrier body using conventional lamination methods, then the data carrier can be manufactured with contactless reading capability, but mechanical tensions between the chip and data carrier body lead to crack formation during long-term use
Solution Approach 1:
A stabilizing agent is applied to the chip before lamination to preemptively counteract the mechanical tensions that will arise during the lamination process and subsequent use. This preliminary application of the stabilizing agent prevents crack formation by compensating for stress before it occurs.
Solution Approach 2:
The stabilizing agent acts as an intermediary substance between the chip and the data carrier body. It is applied to the chip and remains flexible during lamination, allowing the chip to be integrated without transmitting mechanical tensions directly to the data carrier body, thereby preventing cracks.
2Strength
If adhesive is activated before lamination to secure the chip, then strong bonding is achieved, but mechanical tensions are frozen into the data carrier body causing cracks
Solution Approach 1:
The stabilizing agent is applied to the chip before lamination in advance of the actual bonding process. This preliminary action allows the chip to be prepared with stress-compensating properties before the adhesive is activated and mechanical tensions are introduced during lamination.
Solution Approach 2:
The stabilizing agent changes its physical parameters during the process: it is flexible and non-reactive during lamination to absorb mechanical tensions, then is activated after lamination to form a strong adhesive bond. This parameter change allows it to fulfill both protective and bonding functions.
3Strength
If the stabilizing agent is activated before lamination, then strong adhesive connection is formed, but the chip cannot be integrated without mechanical tensions
Solution Approach 1:
The stabilizing agent is applied to the chip before lamination but is not activated until after the lamination process is complete. This timing allows the chip to be integrated into the data carrier body without the stabilizing agent creating rigid constraints that would cause mechanical tensions during the integration process.
Solution Approach 2:
The stabilizing agent transitions from a flexible, non-reactive state during lamination to an activated, bonded state after lamination. This dynamic behavior allows the integration process to proceed easily without mechanical tensions, while still achieving strong adhesive connection ultimately.
4Device complexity
If conventional lamination is used without stabilizing agent, then manufacturing process is simple, but cracks form in the data carrier body during use
Solution Approach 1:
The stabilizing agent is applied to the chip as a preliminary step before lamination. This additional step is simple in itself (application of a coating) and prevents crack formation, making the overall process complexity acceptable given the significant reliability improvement.
Solution Approach 2:
The stabilizing agent serves as an intermediary between the chip and the lamination process. Its application adds a simple step to the manufacturing process, but it mediates the mechanical tensions during lamination and use, preventing cracks and significantly improving reliability.
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 prevents the formation of cracks and ensures mechanical stability and electrical functionality by absorbing mechanical stress during lamination, maintaining flexibility until the adhesive connection is fully formed, thus enhancing the durability and reliability of the data carrier.
Implementation Method 1
the stabilizing agent is flexible before and during the lamination. After the lamination there exists a sufficient adhesive connection between data carrier body and chip without there being present any mechanical tensions in this connection
Implementation Method 2
After the lamination there exists a sufficient adhesive connection between data carrier body and chip
Data Source
AI summary
This disclosure includes a method for manufacturing a portable data carrier, an inlay for a data carrier, and a data carrier. A data carrier body has a gap for a chip and a chip is incorporated into the gap. In a subsequent step a cover layer is laid on the data carrier body, and the data carrier body and the cover layer are laminated. After the incorporation of the chip and before the lamination, a stabilizing agent is applied into the gap of the core layer, which remains soft or flexible during the lamination and cures or is activated (e.g. by means of UV radiation) only after the lamination, in order for mechanical tensions to be avoided.