Wolfgang Reinle
Head of Project / Process Management
Tenowo GmbH | Germany
100% Surface Inspection Instead of Continuous Sampling – Why We Rely on Basis Weight Monitoring with EasyMeasure.
Conventional technologies for basis weight monitoring in the nonwoven industry, such as beta emitters or X-ray emitters, often cover less than 1% of the total surface area. Beyond providing only spot measurements, they also create significant additional costs due to the need for radiation safety officers and regular safety training for employees. For production lines that require local defect inspection, we rely on Dr. Schenk's EasyMeasure camera inspection system to achieve complete, 100% surface coverage.
With EasyMeasure and EasyInspect from Dr. Schenk.
This enables us to achieve integrated, 100% basis weight monitoring in a single step through built-in defect detection.
Innovative, highly efficient, and transparently documented for absolute process reliability!
The Solution: EasyMeasure by Dr. Schenk
Expanding our existing surface inspection system with camera-based grammage monitoring using visible light has made our inline quality control highly cost-effective. Since the defect inspection system, was able to take this task as well, no additional capital-intensive hardware was required. Unlike conventional systems, this technology offers:
- Comprehensive monitoring: We achieve 100% surface coverage.
- Dual Monitoring: In addition to basis weight, the
- Formation (cloudiness/homogeneity) can be continuously monitored as an option.
- Maintenance-Free: Since the system operates without additional hardware or traversing mechanisms, mechanical sources of wear—and thus maintenance tasks—are completely eliminated.
- Documentation of measurement data and graphical representation.
Impressive Technology & Precision
The durability of the hardware is particularly noteworthy. Thanks to the innovative water cooling system of Dr. Schenk LEDs, the temperature of the modules remains constant at approximately 40°C, whereas air-cooled lighting units can reach temperatures of up to 90°C—resulting in fluctuating, degrading light intensity. The water cooling system ensures consistently accurate measurement results without drift. This is the fundamental prerequisite for reliable basis weight monitoring.
The Solution
The optional calibration was incredibly simple and took just four steps—from taking the transmission images to entering the parameters (correlation between lab measurements and gray values) into the system. Today, we can immediately see in the live view (VIZ) whether our production is within the “OK” range or if there are any deviations (NG).
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Surface Inspection – Embedded in AI-Ecosystem The state-of-the art surface inspection solution Dr. Schenk Inspection System is embedded into a unique AI-Ecosystem, in which all proprietary components are purpose-built to deliver seamless performance. From your first intuitive image labeling with the AI Workbench to the fully automated robust defect detection and classification.
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Dr. Schenk customers benefit from more than 35 years of experience. You, too, can rely on us when you implement a new system or switch from another system to an automatic in-line inspection solution from Dr. Schenk.
Dr. Schenk offers extensive from-lab-to-fab knowledge for customized solutions. Customers benefit from our expertise in the translation of lab applications to large scale productions.
Integrated handling and inspection solutions for customers who want material handling & inspection from a single source - without loss of time or money for coordinating different providers.
