Laminating Device Roller Gap Control for Flexible Substrates
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Solution Overview
Problem
The manufacturing of flexible electronics is hindered by the instability of rollers during high-temperature lamination processes, leading to uneven pressure, stress concentration, and reduced yield due to roller deformation and material cracks on flexible glass substrates.
Innovation Solution
A laminating device with a pressing module comprising two rollers, a driving module, a pressure sensor, and a control module that adjusts the position of the rollers to maintain a predetermined pressure, ensuring even pressure distribution and stability during the lamination of flexible substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If rollers are used for pressing materials during high-temperature lamination, then the lamination process can be performed, but the rollers become unstable and deform under high temperature, causing uneven pressure and cracks on flexible substrates
Solution Approach 1:
The patent employs a dynamic adjustment mechanism where the gap between rollers is continuously adjusted based on real-time pressure feedback from pressure sensors. This dynamic control compensates for thermal expansion and deformation of rollers during high-temperature operation, maintaining stable pressing force and preventing cracks on flexible substrates.
Solution Approach 2:
Pressure sensors are installed to detect the pressing force in real-time, and this feedback is fed to a control system that automatically adjusts the roller gap. This closed-loop feedback mechanism ensures that even though rollers deform under high temperature, the pressing force remains consistent and uniform across the flexible substrate.
2Ease of manufacture
If rollers are used for pressing, then lamination can be performed, but roller deformation leads to uneven surface and reduces manufacturing yield
Solution Approach 1:
The system dynamically adjusts the roller gap based on real-time pressure measurements, allowing the pressing force to adapt to any roller deformation. This ensures uniform pressure distribution across the flexible substrate throughout the lamination process, preventing surface unevenness and improving manufacturing yield.
Solution Approach 2:
The patent changes the physical parameter of roller gap distance in response to detected pressure variations. By continuously modifying this geometric parameter, the system compensates for roller surface deformation and maintains consistent pressing conditions, ensuring high manufacturing precision despite thermal effects.
3Device complexity
If fixed pressure is applied by rollers, then the pressing force is simple to control, but temperature-induced deformation causes pressure instability and stress concentration
Solution Approach 1:
Pressure sensors provide real-time feedback on the actual pressing force, and the control system adjusts the roller gap accordingly. This feedback mechanism transforms the pressure control from a simple fixed value to a dynamically adjusted parameter, ensuring pressure stability despite thermal deformation of rollers.
Solution Approach 2:
The patent replaces simple mechanical pressure application with an electromechanical control system that uses motors to adjust roller gap based on electronic feedback from pressure sensors. This substitution enables precise pressure stability control that compensates for thermal effects, while the added complexity is justified by the improved pressure stability.
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 enhances the stability and evenness of pressure application, reducing stress concentration and improving the yield rate of flexible electronics manufacturing by maintaining consistent pressure and adjusting for temperature-induced roller deformations.
Implementation Method 1
The pressure sensor is disposed on one side of the second roller and opposite to the first roller for detecting a pressure of the pressing module
Data Source
AI summary
A laminating device for laminating at least one flexible substrate includes a frame, a pressing module, a driving module, a pressure sensor and a control module. The pressing module is disposed on the frame. The pressing module at least includes a first roller and a second roller which are used for moving relative to each other. The driving module is connected to the first roller for driving the first roller. The pressure sensor is disposed on one side of the second roller and opposite to the first roller for detecting a pressure of the pressing module. The control module is electronically connected to the pressure sensor and the driving module for ordering the driving module to adjust the position of the first roller based on the difference between the pressure detected by the pressure sensor and a predetermined pressure.