Microstructured Coating Device with Secondary Pressure Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for applying microstructured coatings lack precise and uniform pressure control, especially when applying coatings to surfaces facing downwards, due to the elasticity of the band and opposing weight distribution.
Innovation Solution
A device with secondary pressure application elements, such as rollers, is used to improve pressure uniformity and control by applying load along the inner face of the band in the curing zone, while maintaining optimal tension and using elastic elements like springs to manage band elasticity, ensuring uniform pressure distribution and efficient curing with UV radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a band is used to apply curable resin onto the substrate, then the coating can be applied continuously, but the pressure application becomes non-uniform and imprecise due to band elasticity and weight distribution
Solution Approach 1:
The single continuous band is segmented into multiple parallel bands (first band, second band, third band) that are independently tensioned and positioned. Each band applies resin to a specific region of the substrate, allowing independent control of pressure and positioning for each band, thereby achieving uniform pressure distribution across the entire coating width while maintaining continuous operation.
2Adaptability or versatility
If the device applies coating to surfaces facing downwards, then versatility is improved, but pressure control becomes severe due to elasticity of the band and opposing weight direction
Solution Approach 1:
Independent tensioning mechanisms are provided for each band, allowing the operator to compensate for the elastic deformation and weight effects by applying additional tension force. This counteracts the gravitational and elastic influences that would otherwise cause non-uniform pressure when coating downward-facing surfaces, enabling precise pressure control in this challenging orientation.
Solution Approach 2:
The tensioning mechanisms are designed to be adjustable and dynamic, allowing real-time modification of band tension according to the coating orientation and substrate geometry. This dynamic adjustment capability enables the system to adapt to different coating scenarios (including downward surfaces) while maintaining optimal pressure distribution throughout the coating process.
3Productivity
If UV curing is applied to the resin, then curing speed is improved, but the curing zone must be precisely controlled to avoid premature or incomplete curing
Solution Approach 1:
UV curing lamps are positioned specifically to illuminate only the regions where the bands are currently in contact with the substrate and applying resin. This localized curing approach ensures that resin is cured at the point of application, preventing premature curing on the band surface and ensuring complete curing on the substrate, while the continuous movement of the bands through the curing zone maintains high curing speed.
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 achieves optimal pressure control and uniform curing of the microstructured coating on substrates, ensuring high-quality coatings even when applying to surfaces facing downwards, with improved tension management and faster curing due to high transmittance materials.
Implementation Method 1
the UV radiation source illuminates at least part of the application strand and causes curing of the resin applied on the substrate by this part of the application strand
Implementation Method 2
the device is moved in translation on this substrate so that the band rolls without slipping on this substrate
Data Source
AI summary
A device for forming a microstructured coating on a substrate. The device includes a microstructured band that can be moved by rolling without slipping on the substrate and going around main pressure application elements assembled on a chassis, and secondary pressure application elements assembled on the chassis so as to be in contact with an inner face of the band in a zone of a strand of the band delimited by said main pressure application elements, this zone being exposed to the action of a curing apparatus that accelerates curing of a curable material designed to form said coating. A method for forming a microstructured coating using the above-mentioned device.