| 摘要 |
A folding method for empty disposable packages, e.g. milk cartons, permitting reuse collection in suitable physical standards, as well as a device for this purpose. A bottom plate (3) firmly cooperates with two longitudinal, upright, identical sidewalls, one at each side, between which a pressing plate (1) is led downwardly. The opening portion of an empty milk carton placed beneath said pressing plate between the sidewalls will be closed first. The carton is placed on the base plate with a glued bottom seam oriented vertically. Air within the carton will be compressed and exert an internal pressure against the bottom side, which will be blasted outwardly and deformed, before the air escapes through the opening portion. The thickness of such a compressed carton allows twenty empty cartons to be inserted into one, which is 50% more than normal. The pressing plate (1) of the device is hinged between the lower and outer part of the sidewalls, so that a directed pressing plate (1) will do the folding function. |
