ISO - 8791-4
Paper and board — Determination of roughness/smoothness (air leak methods) — Part 4: Print-surf method
|Publication Date:||1 May 2021|
|ICS Code (Paper and board):||85.060|
This document specifies a method for determining the roughness of paper and board using an apparatus which conforms to the Print-surf method, as defined in this document. It is applicable to all printing papers and boards with which it is possible to form a substantially airtight seal against the guard lands of the measuring head.