Abstract: A reusable packaging system is provided, whereby goods of all sorts may be provided to a consumer and the case in which the goods are provided is re-used. The case resembles a standard rectilinear cardboard case, except that at least the planar bottom is assembled together by the use of at least four snap lock fittings, where the female halves of the snap lock fittings are located in one pair of flaps, and the male halves of the snap lock fittings are located in the other pair of flaps. The invention provides a box washer where information which has been printed by ink-jet printer on the outside surfaces of the box may be washed off, a corona treatment unit for treating the boxes so as to be re-printed, as well as case delatching and erecting equipment. Because the cases themselves are made of plastic sheet material which can be washed, printed on, and deinked, there is no wastage of forest resources.