CARTON, METHOD OF FORMING SAME, AND CARTON BLANK

摘要

The top of a carton (20), with opposite main panels (22, 24) and opposite side panels (26, 28), has an inner (34) and outer (32) major flap hinged to opposite main panels (22, 24). At each side panel (26, 28), an ear (36, 38) has a lower portion (40) hinged to the side panel (26, 28) and two upper ear-halves (42, 44), one hinged to each of the major flaps (32, 34). To seal the top, adhesive is applied to an outer face of the inner major (34) flap and to the ear-halves (42, 44) extending from either end of one of the major flaps (32, 34), usually the inner major flap (34). Then the inner major flap (34) is folded down and the ear-halves (42, 44) extending there from are folded down and out. The outer major flap (32) with extending ear-halves (42, 44) is folded on top in overlapping relation so that the adhesive bonds. In one aspect, each ear (36, 38) has a notch (76) between the ear-halves (42, 44) to facilitate overlapping of the ear-halves (42, 44). With the carton blank (50) coated with an impermeable coating, the resulting carton (20) is air tight.