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ISO 8791-4:2021 pdf download – Paper and board – Determinationof roughness/smoothness (air leakmethods)— Part 4: Print-surf method

ISO 8791-4:2021 pdf download – Paper and board – Determinationof roughness/smoothness (air leakmethods)— Part 4: Print-surf method. Note that the spring loading In the protective collar (iZ.3) and the weight of the backing and its holder need to be taken...
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