N° 425
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Presence control of an oil film on an aluminum surface
The presence of an oil film in aluminum housing should be controlled.
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N° 401
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Presence control of UV bond on a plastic component
The presence of an UV adhesive layer on the backside of a plastic part should be controlled. A false detection even from the front side of the plastic component must be avoided.
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N° 394
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Detection of a fluorescent green and orange mark
Orange as well as a green fluorescent marks sprayed on a white fleece should be detected and distinguished.
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N° 342
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Plastic film presence control
The presence of a plastic film on an envelope should be controlled. It has to be taken into account that the glue stripe of the envelope is slightly fluorescent in the presence of UV light, whereas the matt plastic film (which covers the glue stripe) absorbs the UV light a bit.
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N° 270
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Differentiation of front- and backside of a fleece
The front side of a fleece should be differentiated from the back side. The back side (non structured side) is UV fluorescent, whereas the plastic structured film is nonfluorescent and damps the fluorescence.
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N° 255
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Detection of the presence of an oil film on a turned metal part
The presence of an oil film without gap should be controlled on a turned metal part.
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N° 214
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Detection of the presence of final UV fluorescent coating of laminate
The presence of the upper layer of a laminate should be controlled. At this, the layer is UV fluorescent.
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N° 211
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Presence control of wax coating on steel wire ropes
The presence of wax coating on steel wire ropes should be controlled. The wax is supplied with fluorescent additives.
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N° 192
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Control of the presence of a fluorescent film on a rubber lip
A rubber lip for car doors is coated with a thin fluorescent film. The presence of this film should be checked during the production.
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N° 173
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Leak detection of welding lines on dish washers
Leaks should be detected on welding lines of dish washers. At this, a robot equipped with a spray nozzle sprays a fluorescent liquid into the inner chamber of a dish washer. If leaks are present in the welding line, the fluorescent liquid flows through these leaks and can be detected with a fluorescent color detector.
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N° 130
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Detection of a fluorescent stripe on leaflets
On an advertising material a fluorescent stripe should be detected. Print shops get orders for promotion material from chain of stores. The stores of a chain have exactly the same leaflet except the address of the respective store, thus it must be paid attention during the packaging process in the print shop. At this a fluorescent stripe will be painted onto the first ten leaflets with the other address. At the beginning of the printing process it is possible to teach the sensor onto the fluorescent stripe, thus the fluorescent as well as optical absorption effects from the paper of the advertising material can be compensated.
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N° 76
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Fluorescent mark control on closures of pharmaceutical flacons
To distinguish between original pharmaceutical flacons and counterfeits the closure of the original will be marked with a fluorescent color. This color mark must be detected during the packaging process.
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N° 68
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Fluorescence stripe detection on newspapers
Newspapers with quality defects will be marked with a fluorescence stripe. These newspapers must be automatically detected and rejected from the normal product stream.
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N° 60
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Color differentiation of fluorescent liquids and marks
Available fluorescent sensors so far detect only the intensity of a fluorescent object but not the color. Furthermore these sensors have a problem to detect very weak fluorescent objects or fluorescent objects at a distance more than 80mm and additionally they are sensitive against ambient light. For the purpose of fluorescent color mark detection a color sensor for fluorescent colors should be used.
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N° 57
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Detection of a fluorescent line on different colored foamed materials
A fluorescent line must be detected on different colored foamed materials.
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N° 39
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Color control of the presence of an airbag label
On different positions in a car there are placed airbag warning notices. These labels are fluorescent in the green color range. The background, where the labels are placed, however, is slightly fluorescent in the blue color range.
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N° 28
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Fluorescent glue control on paper bags
During the production of paper bags fluorescent glue will be used to close the bags at the bottom side. Sometimes, due to different reasons (defects on the printing die, cured glue and absence of glue) there is not any glue applied and the paper bags will be produced as cull.
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N° 24
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Color and intensity control of fluorescent color marks during the production
The intensity of a printed fluorescent color should be controlled. At this, fluorescent color marks with different densities of color are present. Thus, the color as well as the intensity of the fluorescent color mark can be controlled.
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N° 20
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Closure head color control
Different plastic closure heads should be color controlled.
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N° 4
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Detection of the presence of the fleece during the production of disposable diapers
During the production of disposable diapers the assembling of the fleece must be checked. The production speed is approximately up to 10m/s and the height of the diapers can slightly changing. Furthermore the color of the diaper as well as the color of the fleece is white but additionally to this the fleece is fluorescent in blue under the influence of UV light.
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