Fibreboard Boxess

6.2.11.2 Strong and good quality solid or double -faced corrugated fibreboard (single or multi-wall) must be used, appropriate to the capacity of the box and to its intended use. The water resistance of the outer surface must be such that the increase in weight, as determined in a test carried out over a period of 30 minutes by the Cobb method of determining water absorption, is greater than 155 g/m2.Read More