Infrared Liquid Application Detection on Cellulose Blank Structures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Detecting the application of liquid compositions onto fluffy cellulose blank structures is challenging due to fast absorption and the transparent or white nature of these compositions, making it difficult to ensure correct application amounts and areas, which can lead to defective cellulose products.
Innovation Solution
A detection system with an infrared detection sensor is used to monitor the application of liquid compositions on cellulose blank structures, providing temperature images for analysis, and a control unit compares these images to pre-determined results to initiate corrective actions if deviations are detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional optical detection methods are used to detect liquid composition application, then the detection system is simple, but the detection precision is insufficient due to fast absorption and transparent/white nature of compositions
Solution Approach 1:
The patent replaces traditional optical detection systems with thermal imaging detection. Instead of using optical sensors that rely on light reflection or absorption properties of the liquid composition, the system uses thermal cameras to detect temperature differences caused by the liquid application. This substitution enables precise detection of transparent or white liquid compositions that are difficult to detect optically, while maintaining relatively simple system implementation.
Solution Approach 2:
The patent changes the detection parameter from optical properties (light reflection/absorption) to thermal properties (temperature distribution). By detecting temperature differences on the cellulose blank structure surface caused by liquid composition application, the system overcomes the limitation of transparent/white composition detection. This parameter change enables accurate measurement of liquid application without requiring complex optical filtering or contrast enhancement systems.
2Manufacturing precision
If no detection system is used, then the production process is simple and fast, but the manufacturing precision deteriorates due to inability to verify correct application
Solution Approach 1:
The patent implements detection during the production process rather than after completion. The thermal imaging system continuously monitors liquid composition application in real-time, allowing immediate detection of application errors. This preliminary detection enables corrective actions to be taken during production, preventing defective products from being manufactured while maintaining continuous production flow.
Solution Approach 2:
The system establishes a feedback loop where thermal images are captured, analyzed, and used to control the application process. The detection results are fed back to the application system to adjust liquid composition application parameters, ensuring consistent and precise application. This closed-loop control maintains high manufacturing precision without requiring slow manual inspection processes.
3Measurement precision
If manual inspection is used to verify liquid composition application, then the detection accuracy can be high, but the productivity decreases due to time-consuming inspection
Solution Approach 1:
The patent replaces manual visual inspection with automated thermal imaging detection. The thermal camera system continuously captures temperature distribution images and automatically analyzes them to detect liquid composition application quality. This automation eliminates the time required for manual inspection while maintaining or improving detection accuracy through consistent, objective temperature-based measurement.
Solution Approach 2:
The thermal imaging detection operates continuously during production without interrupting the manufacturing process. Multiple cameras can capture images simultaneously, and the analysis system processes thermal data in real-time. This continuous detection ensures every product is inspected without adding inspection time to the production cycle, unlike manual inspection which requires stopping or slowing production.
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
Ensures that liquid compositions are applied correctly, preventing defective products by stopping the application process, cleaning malfunctioning equipment, and adjusting composition amounts, thus ensuring desired product properties.
Implementation Method 1
The detection unit comprises an infrared detection sensor. The method further comprises the steps: detecting the applied liquid composition in the detection area with the infrared detection sensor, where the detection result is a temperature image of the detection area
Data Source
AI summary
A method for detecting a liquid composition applied onto a cellulose blank structure, with a detection system. The detection system forms part of a cellulose product forming unit for forming cellulose products from the cellulose blank structure. The detection system includes a detection unit connected to a control unit. The method includes: providing the cellulose blank structure and feeding the cellulose blank structure in a feeding direction, where the cellulose blank structure moves through an application area and a detection area, the application area being arranged upstream the detection area; applying the liquid composition onto the cellulose blank structure in the application area; detecting the applied liquid composition in the detection area with the detection unit; analysing a detection result formed by the detection by the control unit, thereby forming an analysis result; and initiating a control action by the control unit upon detection of an analysis result deviating from a pre-determined analysis result.