Paper and printing technology

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Web-edge detection in the calender of a paper machine

If movement of the paper web in the calender is not exactly executed in one line, the heated calender roller is pressed directly onto the coating of the opposite roller, which can damage it. Repairing ...

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Rebound behaviour of the felt

In paper production the paper band is transported over a felt conveyer from the screen station to the pressing station. This felt removes the residual moisture from the paper. For water separation the ...

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Thickness measurement using displacement sensors

Thickness measurement using displacement sensors is a wide application area. Basically there are distinctions between non-destructive/destructive, non-contact/with contact and one-side/two-sided thickness ...

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Automatic paper roll control

In paper production the prepared paper pulp flows onto a conveyor belt of fine wire mesh at the so called "wet end". There most of the water is removed by means of a vacuum. The paper web is ...

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Paper fold recognition in printing machines

Possible folds produced in the paper web that remain unnoticed can have far-reaching consequences during processing and often lead to unusable printed products. Extreme differences in printing registration, ...

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Lip Gap Measuring in Paper Manufacture

In paper manufacture the lip gap at the headbox determines the thickness of the paper. Paper machines usually have a lip width between 4 and 6 metres. The measuring task is a constantly monitoring the ...

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Paper, packaging industry - temperature measurement

Non-contact IR thermometers from Micro-Epsilon are used for fast and non-contact temperature measurement for the manufacture of paper products, particularly in the areas of coating and drying.

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Layer thickness measurement (non contacting)

Layer thickness measurement belongs to the group of one-sided, non-contact thickness measurement. Basically, only the layer thickness of electrical insulators can be measured for opaque objects. An eddy ...

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Measurement system for cut packaging pieces

Manufacturers in the packaging industry make high demands with regard to their production quality. For sampling inspection for example, the cut pieces of packaging are extracted from the production, placed ...

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Roller levitation height

The distance of both rollers from each other or from the roller to the support surface is the crucial dimension for rolling processes for metals, plastics or other materials. In the case of sensitive processes ...

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Roller runout

The runout of the roller is a crucial criterion for rolling processes of metals, plastics or other materials. An imbalance is even dangerous for rollers which have to rotate at high speeds. Therefore, ...

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Roller clearance

The distance of both rollers from each other or from the roller to the support surface is the crucial dimension for rolling processes for metals, plastics or other materials. In the case of sensitive processes ...

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