PAPERmaking! g FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 1, Number 1, 2015
Crepe Structure Measurement - Model Q4224-50 Honeywell’s Crepe Structure measurement analy ses tissue quality by capturing high resolution images of a moving sheet to identify important variables on creping process. These allow optimisation of creping blade life while maintaining consistent quality. Longer blade running time means less blade changes and more quality production without process upsets. The sensor allows mill personnel to monitor tissue structure characteristics online throughout the entire production process, facilitating immediate corrective action if the quality deviates from targeted. Crepe Structure Measurement provides an excellent tool for tissue process optimisation, troubleshooting and test runs for selecting optimal chemicals and process operating points in real-time. The image control unit inside the sensor controls both the camera and the illumination unit for optimal image quality with varying machine speeds. Single-sided construction houses camera and illumination on same side of the sheet. The captured image is analysed with proprietary algorithms, producing numeric indicators characterising tissue crepe structure. Imaging and analysis computation are done by sensor processor unit in real-time. Numeric values of the measurements are then transferred to the system server for display, profiling and trending. Captured images are periodically transferred to the Experion MX system server for display. o Folds/length o Macro Crepe o Micro Crepe o Impurity o Caliper (this is an application dependent additional measurement) x Sensor module camera and illumination automatically adapts to different machine speeds for the optimal image quality x Standard sensor modular design allows installation in any slot inside the measuring head x There are no moving parts in the sensor module, which minimises maintenance needs and ensures a long lifetime x Up to four images per scan are available in Experion MX from operator-defined cross direction locations for visual analysis and trouble-shooting x An “Image Gallery” display shows 8 images each representing reel average crep e structure characteristics. These are displayed around grade dependent reference image for comparison x In single point operation, images are transferred periodically at a fixed rate for operator observation Features & Benefits x The sensor measures the following crepe structure characteristics:
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Article 6 – Tissue (crepe structure)
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