The ornamental design for a packagingbox, as shown and described.
FIG. 1 is an exploded front perspective view of a packaging box showing our new design with a tray that forms no part of the claimed design to show environment;
FIG. 2 is an exploded front elevation view thereof;
FIG. 3 is an exploded rear elevation view thereof;
FIG. 4 is an exploded right side elevation view thereof;
FIG. 5 is an exploded left side elevation view thereof;
FIG. 6 is an exploded top plan view thereof;
FIG. 7 is an exploded bottom plan view thereof; and,
FIG. 8 is a front perspective view thereof, in which the packaging box is shown separately for ease of illustration.
The tray shown in evenly dash-dash line illustrates environmental structure and forms no part of the claimed design. The remaining evenly dash-dash line depict portions of the packaging box that form no part of the claimed design. The long-short dash line in FIG. 3 illustrates a boundary line that forms no part of the claimed design.