US2942767A - Folding paperboard carton - Google Patents

Description

June 28, 1960 A. J. WEISS FOLDING PAPERBOARD CARTON 2 Sheets-Sheet 1 Filed Dec. 5, 1956 ELF/a Z INVENTOR.

ARTHUR J. WEISS \[lllllllllll .Ziii

ATTORNEYS.

June 28, 1960 A. J. WEISS FOLDING PAPERBOARD CARTON 2 Sheets-Sheet 2 Filed Dec. 5, 1956 INVENTOR.

ARTHUR J. WEISS BY 2 7,4; I ORNEYS.

FOLDING PAPERBOARD CARTON Filed Dec. 5, 1956, Ser. No. 626,482

6 Claims. (Cl. 229-46) The invention relates to a folding paperboard carton and its manufacture.

Summary Commercial machinery and methods used in the manufacture of paperboard cartons impose practical limitations upon the size of certain types of cartons, such as those known as the Quikset type which require right angle gluing operations on diagonal fold flaps at the bottom of the carton as well as straight line gluing of a glue lap at the corner of the carton Walls. A carton blank having four wide side panels lined up end to end may be found to extend beyond the limits of existing equipment so that the gluing of such a blank into flat folded carton form becomes a difficult problem. I have found how to construct a carton so that the longest dimension of the blank is cut in half, as a result of which much larger cartons of the Quikset type can be glued up on existing machines and equipment.

According to my invention, the four side wall panels of the carton are formed in pairs joined together at both ends by glue flaps, the carton in its flat folded form having the top of at least one panel of a pair initially articulated to the top of the adjacent panel of the other pair. The articulation provides a fold line about which one pair of panels can be folded over against the other pair for gluing. 'Ihis fold line is severed by trimming or is formed by interrupted cuts with severable portions or nicks which can be torn apart for erection of the carton.

Description In the drawings:

Fig. 1 illustrates a blank for a Quikset type carton to which my invention is applicable.

Fig. 2 shows how the side wall panels of the blank of Fig. 1 are rearranged in constructing a carton according to my invention.

Fig. 3 shows the flat folded carton formed from the blank of Fig. 2.

Fig. 4 shows a flat folded carton of slightly modified construction.

Fig. 5 shows the carton of Fig. 3 as it appears after the side walls have been squared into erected form.

Referring to the drawings, I shall now describe the best mode contemplated by me for carrying out my invention. A comparison of Figs. 1 and 2 will reveal how much more compact is the blank, Fig. 2, from which my carton is constructed, than is a conventional blank, Fig. 1, for making a standard Quikset carton of the same dimensions. The greater compactness makes it possible to produce wider cartons on existing machinery and equipment than has heretofore been possible. My invention comprises in its general arrangement a folding paperboard carton comprising four side wall panels 6, 7, 8, 9, formed in pairs, P and P joined together at both ends by glue flaps, 10, 11. The carton, in its flat folded form, has the tops of the panels 6, 7 of pair P initially articulated to the tops of the panels 8, 9 of the pair P as by means of flaps 12, 13, 14, 15. These flaps are connected hired States Patent yiC Zf to the side wall panels at fold lines 1, and to each other at fold lines ,1".

Fold lines f are severable fold lines about which the pair of side walls panels P can be folded over against the other pair P for gluing. This step is illustrated in Fig. 3. Glue flaps 10 and 11 are folded over into the positions shown in dot-dash lines in Fig. 2 either before or after the panel folding step according to whether the glue flaps are to be on the inside or outside of the carton. In Fig. 3 they are shown on the inside. The construction, folding and gluing of the Quikset bottom flaps 16, 17, 18, 19 may be carried out according to usual procedures well known in the art and form no part of the present invention. If desired, other known features may be incorporated in our construction such as the provision of a display cut-out panel 20, formed in Wall panel 6 at the front of the carton.

After completion of the folding and gluing steps illustrated in Fig. 3, fold line i is severed by trimming along line 21-21, removing about 4; of the folded edge of the carton.

The modified construction shown in Fig. 4 is the same as that described with reference to Figs. 24 except that the fold lines between flaps 13, '14 and 12, 15 are formed by interrupted cuts 22 with severable portions or nicks 23 which can be torn apart for erection of the carton. Fig. 4 shows the flaps partially torn apart near the center of the carton.

The terms and expressions which I have employed are used in a descriptive and not a limiting sense, and I have no intention of excluding such equivalents of the invention descrbied, or of portions thereof, as fall within the scope of the claims.

I claim:

1. A folding paperboard carton comprising four side wall panels formed in pairs joined together at both ends by glue flaps, and bottom flaps adjoining the bottoms of the side wall panels at fold lines along their respective lower edges, the bottom flaps being joined together at both outer end portions adjacent to said glue flaps by diagonal fold glue flaps, the carton in its flat folded form having the top of at least one panel of a pair initially articulated to the top of the adjacent panel of the other pair.

2. A folding paperboard carton in accordance with claim 1 in which the articulated connection includes flaps adjoining said tops of the articulated panels at fold lines along their respective upper edges, the respective flaps in turn adjoining one another along a severable fold line and in which the bottom flaps include diagonally relieved corners joined to the diagonal fold glue flaps.

3. A folding paperboard carton in accordance with claim 1 in which the articulated connection includes flaps adjoining said tops of the articulated panels at fold lines along their respective upper edges, the respective flaps in turn adjoining one another along a fold line having cuts interrupted by severable connecting portions and the inner end portions of the bottom flaps adjoining each of said pairs of side wall panels include a square corner and a diagonally relieved corner adjacent to each other.

4. A folding paperboard carton in accordance with claim 1 in which the articulated connection includes flaps adjoining said tops of the articulated panels at fold lines along their respective upper edges, the respective flaps being severed along a fold line having cuts interrupted by severed portions in which the bottom flaps include diagonally relieved corners joined to the diagonal fold glue flaps; and in which the inner end portions of the bottom flaps adjoining each of said pairs of side wall panels include a square corner and a diagonally relieved corner adjacent to each other.

5. A folding paperboard carton in accordance with claim 1 in which the articulated connection includes flaps adjoining said tops of the articulated panels at fold lines alongtheir respective upper edges, the respective flaps being severed to ready the carton for setting up; in which the bottomfiaps includediagonally relieved-cor ners joined to the diagonalfol'd glue'flaps; and in which the inner end portions of the bottorn flaps adjoining each of .said pairs of side wall panelsinclude a square corner and a diagonally relieved corner adjacent to each other.

6. 'A blank for a folding paperboard carton comprising 'four side wallpanels formed in' pairs, glue flaps at both ends of the blank for joiningthe pairs of panels together at both ends, bottom flaps adjoining the bottoms of the .side Wall panels at fold lines along their respective lower edges, and diagonal fold glue flaps at both ends of said bottom flaps adjacent to said glue flaps for joining the pairspf panels, said diagonal fold glue flaps adapted for joining the bottom flaps together at'said both ends, the top'of at least one panel of-a pair articulated to the top of the adjacent panel of the other pair to provide a severable fold line about which one pair of side panels and the bottom flaps adjoining thereto can be folded over against the other pair of side panels and the bottom flaps adjoining thereto, respectively, for gluing said glue flaps at both ends of the blank andrsaid diagonal fold glue Arkin Sept, 4, 1956

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