Abstract: A plastic T-shirt bag pack in which the outer walls of adjacent bags have been corona-treated and each bag is provided with a central rack mounting tab with a pair of angled lines coming together in an apex adjacent the upper edge of the central tab, the lines being readily severable when the tab is placed on the central mounting element of a conventional rack. At their opposite ends the lines are curled inwardly toward each other to prevent their tearing from propagating down into the bag walls. This may be further prevented by providing a sinusoidal cut below the lower extremities of the angled lines. The area between the apex and upper edge of the tab is provided with a tear start so that when the bag is pulled from the rack, the area is severed to permit removal of the tab with the bag. Appropriately disposed pressure points with the corona treatment above, enable the bags of the pack to be self-opening.

Abstract: A pack of registering plastic T-shirt bags in which the walls of each bag are provided with registering central tabs projecting into the bag mouth, the tabs each having a rack retainer mounting orifice comprising a lower transverse cut portion extending between points spaced inwardly from the side edges of the tab with one end of the cut portion curving back and upwardly to extend toward, but terminating before reaching, the upper edge of the tab; and the other end of the cut portion also curving back upwardly and terminating in a segment of the cut extending back parallel to the lower transverse portion for a distance less than half the extent of said latter portion; thereby, the tabs of the bags may be mounted on a rack retainer by passing the retainer through the lower transverse cut portion of the mounting orifice.

Abstract: A stack of plastic T-shirt bags and method of making the same wherein the bags of the stack have been subjected to two corona treatments to increase the adhesion between the back wall of each bag and the front wall of the next ensuing bag with a row of pressure points being provided at the base of the central mounting tab in order to enable each bag as it is pulled open on the rack arms to initiate opening of the next ensuing bag. The mounting tab is cut to provide not only a central mounting slit, but also with a wave-like cut below the mounting slit to enable the mounting tab to be torn for removal from the central mounting element without the tear extending down into the bag walls.