ISO 8791-1:1986 Preview
Paper and board -- Determination of roughness/smoothness (air leak methods) -- Part 1: General method
This standard was last reviewed and confirmed in 2018. Therefore this version remains current.
Is applicable to most paper and board, and is not applicable to embossed or creped papers, or papers which will not lie flat under the conditions of test, or high air permeance papers which allow a significiant flow of air through the sheet. The Gurley instrument is excluded from this method.
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