This recommended practice is intended to apply to corrugated boards in which the glue line has reached a condition of maximum cure, i.e. a condition after which further ageing at room temperature produces no further increase in wet strength.
AS/NZS 1301.458rp:1994 history
2004AS/NZS 1301.458rp:2004 Methods of test for pulp and paper - Glue bond strength of wetted corrugated fibreboard