Setting the quality standards. Glass Inspection. Defect detection from the technology leader

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1 Setting the quality standards Glass Inspection Defect detection from the technology leader

2 Inspection systems for flat glass processing Pfungstadt / Germany Made in Germany Service Telephone support

3 Inspection systems: multifunctional applicable

4 Viprotron technology Defects rich in contrast and sharp in contour (Bubbles, inclusions, scratches, dirt, foil residues, etc.) According to the actual standards like EN 1279 I or ASTM C1036 defect inspections should be executed in direct view through the glass in front of a bright background. Technically the Brightfield Channel is the ideal detection channel for these defects. Defects poor in contrast and weak in contour (Hair line scratches, weak roller- or cork marks, fingerprints, smear and haze) In this defect cluster the Darkfield Channel shows its strength. Simulating sunlight from the side, defects are recognized, which are almost or completely invisible in direct view. Coating defects (Coating scratches, pinholes, flakes and brush marks) To realize a reliable detection for coating defects there is no alternative to the Reflection Channel. Most of the coating defects are hardly visible in a view through the glass. Only a detection in direct reflection can guarantee a reliable control of coatings on glass. Defects in special glasses (Acid etched, sandblasted, laquered or enamelled glasses as well as mirrors) Not only transparent glasses, but also light diffusing and non transparent glasses can be controlled with our scanners. To inspect glass defects in non transparent glasses, the scanners check the sheets from the glass side in indirect reflection. Modularity According to the customer s needs Viprotron can offer different modular variants basing on the brightfield channel. When entering the scanner supported defect detection you can start with this base cost calculation in an effective way. When the market is asking for higher quality levels, additional channels can be installed or taylor made solutions can be provided to serve the most demanding customers. Conclusion The design of the illumination is key for the detection result. The performance of a scanner cannot be limited to single optical parameters like resolution or depth of focus!

5 Inspection systems in action

6 Operator Your advantages using Viprotron inspection systems Quality-Scanner Statistic-Report Lenhardt-Line Nr. 1 Production time Morning shift Late shift Night shift Toatal day Meier Zehnder Star 6:46 13:51 22:05 23:46 Quantity Percent Quantity Percent Quantity Percent Quantity Percent % % % % produced panes inspected panes % % % % reject 24 2% 36 4% 9 1% 69 3% after Quality parameters Quantity Percent Quantity Percent Quantity Percent Quantity Percent from reject from reject from reject from reject Quality A % % 0 % 60 87% Quality C 0 % 0 % 9 100% 9 13%

7 Workflows Pre-processes Silver- or colour coating Dryer

8 Technical features Systems: Scanning according to inspection system in brightfieldand optional darkfield-channel in transmission or in addition with a reflection-channel Available as vertical or horizontal systems Standard system sizes from 1.60 m to 3.30 m All glass sizes and thicknesses (3.30 x 15 m; up to 100 mm, oversizes upon request) For high production speeds, optional up to 80 m/min Inspection without production delays or adaptations Compact system design requires only minimum space Easy to integrate in both new and existing production lines From stand-alone device up to a complete integration in line control or ERP software possible A multitude of options were offered to adapt our scanning devices Software: Visualisation of quality relevant defects only Quality zones: rebate, edge and main zone can be individually definded Convince yourself! See a Viprotron inspection system in action! Intuitive definition of customer specific quality requirements concerning defect type, size number and quality zone Use of adaptive filters and detection algorithms to automatic adjustment to illumination and speed changes Pre-classification proven in practice to assure that not each small glass defect will be displayed or leads to a reject Viprotron GmbH Ostendstraße Pfungstadt Germany Telefon Telefax info@viprotron.com Web