DIN 55445-1
DIN 55445-1 Packaging test - Testing of seams of sacks - Part 1: Determination of endurance of seams of paper sacks
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 01/01/2017
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 01/01/2017