A method and apparatus for assessing/measuring grammage variation in sheet material

The invention relates to a method and apparatus for measuring grammage variations in sheet material, comprising that electrons from an electron source, with high energy, in the form of an electron beam of a certain width being caused to encounter an elongate section of the sheet material by means of...

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Bibliographische Detailangaben
1. Verfasser: HAEGGLUND, JAN-ERIK
Format: Patent
Sprache:eng ; fre
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