All sacks require a curing period, usually 5 days after manufacture, to dry out and strengthen before they can be used. This is to allow the glue used in their construction to dry properly. Without this curing period the sacks will not perform. Even when using some of the best raw material in the world, it must not be forgotten that we are dealing with paper. EAPI will help determine the ideal sack size for the density of cement being packed and will make good any broken sacks beyond 0.2% of the sacks supplied.