US2933232A - Carton - Google Patents

Description

April 19, 1960 2 BUGNQNE CARTON 2 Sheets-Sheet 1 Filed Feb. 1, 1957 A. BUGNONE April 19,1960

CARTON 2 Sheets-Sheet 2 Filed Feb. 1, 1957 I AL J United States Patent CARTON Aldo Bugnone, Turin, Italy Application February 1, 1957, Serial No. 637,747

Claims priority, application Italy February 24, 1956 3 Claims. (Cl. 229-41) This invention relates to a carton or the like, having the main characteristic feature that it is made from a pasteboard blank, of which the side walls and cover are pleated to bellows form so that the carton can be laid flat, the cover being provided with two flaps as extensions of the main faces adapted to be juxtaposed and joined by means of a seam in the closed condition of the carton to form a handle for carrying the carton, the said handle being provided with reinforcements, the bottom of the carton being separately attached.

Further characteristic features of this invention will be understood from the following detailed specification referring to the accompanying drawings, wherein:

Figure 1 is a perspective view of the closed carton,

Figure 2 is a perspective view of the carton with the cover in partially closed condition,

Figure 3 is a view of the open carton,

Figures 4 and 5 are cross-sectional views on line IV- IV of Figure 3 in the open and closed condition of the carton, respectively.

Figure 6 shows the development of the pasteboard blank from which the carton is made, and

Figure 7 is a part sectional elevational view of the carton.

The carton is of parallelepipedal shape, its main faces being indicated by 1 to 4. Its opposite side faces 2 and 4 are formed with a central bending line 2a, 4a, respectively, adapted to permit pleating of the carton to bellows shape, a strip 412 being provided adjacent the face 4 and being adapted to be glued to the face 1 on assembly of the carton.

The bottom of the carton is made from a pasteboard blank 5, the edge of which is bent along a downwardly directed portion 5a and a further upwardly direction portion 5b. A seating is thus formed between the edge portions 5a, 5b of the bottom for engaging the lower edge of the lateral walls of the carton. The bottom portion is secured to the lower edge of the carton such as by gluing or sealing for tight closure of the carton.

The top extension of the main faces comprises four panel members indicated by 9 to 12 adapted to form the cover for the carton. The members 10 and 12 adjacent the side faces 2 and 4 are formed with a central bending line on the extension of the said lines 2a and 4a and sloping bending lines 10a, 12a, respectively to permit pleating of the cover to bellows shape.

Flaps 6, 7 are formed as extensions of the members 10, 12 for tight closure of the carton at the cover, flaps 14 being formed as extensions of the members 9, 11 and being provided with a transverse bending line 14a and a pair of openings 15 adapted to come into register on pleating of the members 14 along the line 14a to form the handle for carrying the carton.

The portion formed by punching of the lower openings 15, indicated by 16 in Figures 3, 4 and 5 is bent to contact with the solid handle portion, to serve as a reinforcement and thicken the handle for improving its gripping properties.

2,933,232 Patented Apr. 19, 1960 An additional reinforcement for the handle is formed by a paper strip fitted to the inside of the handle members 14.

A seam is effected at the line between the cover and handle by passing a thread 18 through a perforation 17. A tape 19 can be placed at this region in order to facilitate seaming.

The carton is opened by pulling the thread 18 by acting on an end knob 20. The seam is effected in such manner that the thread can be drawn out without tearing the pasteboard, so that the content can be removed and the carton made available for re-use.

The carton closed at its mouth and deprived of its bottom portion is laid out flat by virtue of the bending lines 211, 4a, 10a and 12a, whereby its overall size is minimised for transport and storing.

The provision of the bellows affords a satisfactorily tight closure, which is a considerable improvement over cartons known heretofore, any access of air at the four corners being prevented.

The improved carton is more particularly suitable as a container for cakes, confectionery and other perishable goods. Moreover, it does not require for shipment special bee-hive structures in the cases, its walls being sufficiently stiff.

Finally, the improved carton permits removal of the content in part only and re-closing, and is suitable for fresh use after it has been emptied.

What I claim is:

1. A collapsed container for erecting into a bottomfilling square container having a preclosed top, the container comprising, four circumferentially contiguous rectangular sections of equal width, each section having ends and comprising a side-forming part at one end, an intermediate top-forming part, and a top fastening part at the other end, and on alternate sections, additional integral handle-forming parts adjoining the top fastening parts and having mating finger-receiving apertures, the sections being defined by longitudinal fold lines and the parts of each section being defined by traverse fold lines normal to the longitudinal fold lines, and each alternate section intermediate the sections with handle parts being bisected by a center longitudinal fold line for collapsing these alternate sides between the alternate sides with handle parts, the sections with center longitudinal fold lines also having diagonal fold lines oppositely extending from the intersection of the center fold line and the traverse fold line defining the top part from the top fastening part to the intersections of the longitudinal fold lines defining the section and the traverse fold line defining the top part from the side, a line of releasable stitching through the top fastening parts of the collapsed container, the stitching extending normal to the longitudinal fold lines and closing the top parts of the collapsed container for placing the collapsed container in condition for erection in which the collapsed sides are pressed outward on the respective center longitudinal lines causing the fastened top parts having handles to fold toward the sides about the transverse fold lines defining the top parts from the adjoining parts, and the part without handles to collapse inwardly about the diagonal fold lines, said handles projecting beyond said top fastening parts and said finger-receiving apertures being above said top fastening parts.

2. A collapsed container according to claim 1, in which each of said handle forming parts comprises a flap which is folded back on itself along a fold line parallel to said traverse fold lines, with the resulting fold forming the upper edge of the handle.

3. A collapsed container according to claim 2, in which said handle-forming flaps are folded inwardly and 3, edge portions of said flaps-parallel to said traverse-fold lines are penetrated and held by said stitching closing the top parts of the collapsed container.

References Cited in the file of thispatent UNITED STATES PATENTS 1,668,800 Bonfield' May a, 1928 1,733,219 Duvall Oct. 29, 1929 1,953,885 McAleer Apr. 3, 1934 4 Kinsley Mar. 3, 1936 Bergstein June 3, 1941 Neubecker et a1 Dec. 22, 1942 Lowey et a1 July 25, 1944 Zinn Dec. 17, 1946 Ross Jan. 13,1953

FOREIGN PATENTS Canada Feb. 26, 1952

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