US2889100A - Carton with hinged lid - Google Patents

Description

June 2, 1959 Q BAKER 2,889,100

" CARTON WITH HINGED LID Filed Feb. 21, 1956 2 Sheets-Sheet l [fizz/672227 Theodore Cfiaer" M I W I (56;;

T. C. BAKER CARTON WITH HINGED LID June 2, 1959 Filed Feb. 21, 1956 2 Sheets-Sheet 2 United States Patent CARTON WITH HIN GED LID Theodore C. Baker, Dundee, 11]., assignor to Container Corporation of America, Chicago, Ill., a corporation of Delaware Application February 21, 1956, Serial No. 567,013

1 Claim. (Cl. 229-44) This invention relates to paper board cartons, and has to do with a carton having a hinged lid suitable for use in packaging cigarettes and other products.

Cartons of the general type with which my invention is concerned are used in large quantities, many millions being used each year. This is a highly competitive field and one in which any saving in the cost of production is an important consideration. My invention is directed to a carton of the general type referred to which is produced from a one piece composite blank of paper board and is provided with a lid hinged to the back panel of the carton so as to be readily opened and closed as desired. The carton is formed from two similar, preferably substan tially identical, blanks of paper board which may be cut from a continuous strip of paper board at comparatively high speed, which blanks are separately provided with cuts therein and are then secured together to provide a composite two ply blank, the composite blank being then suitably cut and scored and then folded to provide the carton. By using two blanks to form the composite blank, comparatively thin solid paper board may be used and the blanks may be produced separately at high speed and readily assembled and folded by suitable machinery, so that the cost of production of the carton is comparatively low, such that it may be produced and sold at a lower price than present day cartons of the same general type. The method of producing the carton by laminating or securing together two paper board blanks in the manner above described in conducive to low cost of production and is an important feature of my invention. Further objects and advantages of my invention will appear from the detail description.

In the drawings:

Figure 1 is a perspective view of a carton embodying my invention, with the lid in closed position;

Figure 2 is a perspective view of an insert, including cigarettes and an enclosing metal foil wrapper, to be inserted into the carton of Figure 1;

Figure 3 is a perspective view, on an enlarged'scale, of the upper portion of the carton of Figure 1 showing the lid in open position;

Figure 4 is a view partly in section and partly in front view, with certain parts broken away, of the carton of Figure l, the sectional portion being taken substantially on line 44 of Figure 1 and this view being on an enlarged scale;

Figure 5 is a sectional view, on an enlarged scale and partly broken away, taken substantially on line 5--5 of Figure 1;

Figure 6 is an inner face view of the exterior blank used in producing the carton of my invention;

Figure 7 is an inner face view of the interior blank used in producing the carton of my invention; and

Figure 8 is an inner face view, partly broken away, of the composite two ply blank produced from the blanks of Figures 6 and 7, it being noted that the latter two Figures 6 and 7, and Figure 8 are all On the same scale and are on a reduced scale relative to Figure 1'.

The carton of my invention comprises a body 10. and

section both transversely and lengthwise. The body 10 is formed from two plies of paperboard and comprises a front panel 12, formed for the major portionof its height from the outer ply of paper board, anupward extension 13 of front panel 12 formed by the inner ply of paper board, side panels 14 and 15 formed from the outer ply of paper board, upward extensions 16 and 17 of the side panels 14 and 15, respectively, formed by the inner ply of paper board, a back panel 18 formed by the two plies of paper board, and a glue flap 19 formed by the two plies of paper board and attached along a fold line at its outer edge to the side panel 14 and seating on and adhesively secured to the inner face of the back panel 18.

The lid 11 comprises side panels 22 and 23, a front panel 24 and a back panel 25 of slight height relative to body 10, back panel 25 being formed of two plies of paper board and panels 22, 23 and 24 being formed from the outer ply only of the composite blank from which the carton is produced. The top of lid 11 is closed by two end closure flaps 26 and 27 each of two ply thickness hinged along fold lines to the top edges of side panels 22 and 23, respectively, a front closure flap 28, also of two ply thickness, hinged along a fold line to the top edge of back panel 25 of lid 11, flap 28 seating on and being adhesively secured to the end closure flaps 26 and 27, and an outer top closure flap 29, also formed of two plies of paper board, hinged along a fold line to the top edge of back panel 24 and seating on and adhesively secured to the front or inner closure flap 28. A triangular tab 30 is adhesively secured. to the inner face of side panel 23 of lid 11 and is integrally attached along a fold line 31 to the outer end of the inner ply of closure flap 27. A triangular tab 32. similar to tab 30, is adhesively secured to the inner face of side panel 22 of lid 11 and is integrally attached along a fold line 33 to the outer end of the inner ply of closure flap 26 A substantially rectangular tab 34, severed from the upper end of glue flap 19, is integrally attached to the back edge of tab 32 along a fold line 35 and is adhesively secured to the inner face of back panel 25 of lid 22. A positioning and securing tongue 36 is integrally attached along fold line 37 to the front edge of closure panel 28 of lid 11 and seats upon and is adhesively secured to the inner face of front panel 24 of lid 11. The tongue 36 is cut from the upper portion of the inner ply of the com-' posite blank providing therein an upwardly flaring opening 38 conforming to tongue 36, which also flares up-' wardly and, in the closed position of lid 11, fits snugly within opening 38, which extends from the upper edge of the inner ply and is spaced an appreciable distance above the upper or top edge of the front panel 12 of the outer ply of paper board. The bottom of body 10 of the carton is closed by inner end flaps 39 and 44) each of two ply thickness attached to the lower ends of side panels 14 and 15, respectively, along fold lines, and front and back closure flaps 41 land 42 attached along fold lines to the bottom edges of the front and back panels 12 and 18, respectively, the bottom closure flaps being adhesively secured together in superposed relation.

The composite two ply plank from which the carton is formed comprises two similar, preferably substantially identical blanks, in respect to the size and shape thereof, shown in Figures 6 and 7. The blank shown in Figure 6 is substantially rectangular in shape, having at one end a glue flap 19a. It is provided with a cut 43 extending transversely of panel area 12 and with cuts 44 and 45 extending from the ends of cut 43 at an upward inclination across the side panel areas 14 and 15, respectively, the cut 45 being provided with anextension 46 defining the lower edge of tab 34. The cuts 43 to assume 46, inclusive, are interrupted to provide easily broken web elements for temporarily holding the parts attached to each other, as is known. The blank of Figure 7 preferably is identical, as to size and shape, with the blank of'Figure 6. It is provided at the mid-portion of the upper portion of the front panel area 13 with a substantially flattened V-shaped cut defining the tongue 36 and opening 33 and with short cuts 47, constituting extensions of fold line 37, as will later appear, and with inclined cuts 48 and 49 extending at an inclination downward from the outer ends of the short cuts 47 across the side panel areas 17 and 16, respectively, the cut 4-9 having an extension 50 across the inner ply of glue flap 1% and defining the lower edge of the inner ply of the tab 34. After the two blanks of Figures 6 and 7 have been cutin the manner above stated, the inner face of the blank of Figure 6 is provided with a coating of adhesive, as indicated by the stippling, except as to the areas thereof corresponding to the upwardly extending portion 13 of the front panel of the inner ply and the upwardiy extending portions of the side panels 16 and 17 of the. inner ply, the area of the inner face of the blank of Figure 6 corresponding to tongue 36 being coated with adhesive, as indicated. The blank of Figure 7 is then placed upon the adhesive coated inner face of the blank of Figure 6 in accurate register therewith and the two blanks are placed under appropriate pressure until the adhesive has set, thereby securing the two blanks together and providing the composite two ply blank of Figure 8. The composite blank of Figure 8 is then suitably cut and scored to provide the top closure flaps 26 to 29, inclusive, of which flaps 26, 27 and 29 are integrally attached to panels 16, 17 and 18, respectively, along fold lines 33 and 52 constituting extensions of the fold line 37; the bottom closure flaps 39 to 42,. inclusive, attached to the bottom edges of the panels along a-comrnon fold line 53, a hinge fold line 54 extending from the upper end of cut 44 across back panel 18 and below and parallel with fold line 52 defining therewith back panel 25 of the lid, and vertical fold lines 55, 56, 57 and.58 providing the glue flap 19, side panel 16, front panel 12, including the upward extension 13 thereof, side panel 17 and back panel 18. It will be noted that the cut 49 in side panel 16 extends downward to the upper end of cut 45 in side panel 14 of the exterior ply of the composite panel and, as will be understood from Figures 7 and 8, the cut 4/8 of side panel 17 extends downward to the upper end of the cut 44 of side panel 15 of the exterior ply. The composite blank of Figure 8 cut and scored in the manner above described is then folded into carton form with the glue flap 19 secured to the inner face of back panel 18 and the end closure flaps at the top and bottom of the carton folded into superposed relation and adhesively secured together. The carton then appears as shown in Figure 1. By exerting upward'pressure on the lid 11 the webs conmeeting the lid to the body of the carton are readily broken and the lid may be swung upward and rearward into its open position shown in Figure 3. The tabs 30 and 32 are then adhesively secured to the side panels 23 and 22, respectively, of lid 11 and the tongue 36 is also adhesively secured to the front panel 2 1- of lid 11, as previously described. From what has been said it will be seen that the cuts 44 and 45 made in the blank of Figure 6 constitute the top edges of the side panels 14 and 15, respectively, of the outer ply and the cuts 48 and 4? in the blank of Figure 7 define the upper edges of the side panels 17 and 16, respectively, of the inner ply, it being noted that the top. edges of the panels 14 and 15 are inclined downward and forward to the top edge 43 of front panel 12 and the top edges of side panels 16.and 17 of the inner ply are inclined downward and rearward to the top edge of back panel 18, the hinge line 54 of the lid 11 extending between the points of juncture with that panel of the top edges of the inner and the outer side panels.

inclining the top edges of the side panels 16 and 17 of the inner ply downward and rearward to the hinge line of the lid 11, with the top edges of the side panels of the outer ply inclined downward and forward from that hinge line, avoids any interference with closing of the lid and any tendency to spring the lid open after it has been closed is also eliminated. When the lid 11 is in fully closed position, the lower edges thereof contact the upper edges of the front and side panels of the body 10, and the lower edges of the tabs 3% and 32 contact the upper edges of the side panels 16 and 17 of the inner ply, thereby limiting closing movement of the lid 11. Further, in the closed position of lid 11 it fits snugly over the forward corner portions of the front and side panels 13 and 16 and 17 so as to be held frictionally closed thereby. Additionally, the tongue 36 fits snugly within opening 38 effective for centering the lid 11 relative to body 10 so as to prevent misalignment of parts while also providing additional friction means for holding the lid 11 closed, the upward flaring of tongue 36 and opening 38 permitting ready opening of lid 11 by application of slight upward pressure thereto. The opening 38 also gives ready access to the contents of the carton when the lid is in its open position shown in Figure 3.

In assembling the blanks of Figures 6 and 7 to provide the composite blank of Figure 8 it is not essential that the inner face of the blank of Figure 6 be provided with a continuous coating of adhesive. If desired, the adhesive may be applied in strips or in dots, or the blanks may be secured together in any suitable manner. As previously noted, it is preferred that the blanks of Figures 6 and 7 be similar, preferably identical, as to size and shape. That is conducive to high speed production of the composite blank of Figure 8. In practice the. blanks of Figures 6 and 7 are produced by run.-

ning a continuous strip of paper board between suitablerolls which cut the blanks to proper size and shape and also make the proper cuts in the respective blanks, after which the blanks, remaining attached together in a continuous strip, are passed through suitable laminating rolls by means of which they are superimposed and secured together in the manner previously described, the strip of composite blanks then passing between suitable dies by means of which they are cut and scored and are separated one from the other to produce the blank of Figure 8. By forming the blanks separately and then securing them together to provide the composite blank, as above described, high speed operation is facilitated with corresponding low cost of production, an important consideration in this highly competitive field. It will be understood that changes in detail may be resorted to without departing from the field and scope of my invention, and I intend to include all such variations, as fall within the scope of the appended claim, in this application in which the preferred form only of my in vention. has been disclosed.

I claim:

A paper board carton formed from a single composite blank comprising two coextensive substantially identical oblong blanks secured together face to face and providing inner and outer plies respectively of said carton, the latter comprising an open top body and a lid each of substantially oblong section transversely and lengthwise and respectively having front and back and side. panels, the front panel of said inner ply extending a substantial distance above the front panel. of said outer ply and the top edges of the side panels of said outer ply being inclined upward and rearward from the top edge of the front'panel thereof with the top edges of said side panels of said inner ply inclined upward and forward from the rearward ends of the top edges of the side panels of said outer ply, said. back panels of said body and lid being of continuous two ply thickness with the back panel of said lid hinged to the back panel of said body by two pliesofcpaper boardialong aline connecting. the

assanoo rearward ends of the top edges of said side wall panels of said outer ply, the lower edges of the side and front panels of said lid conforming to the top edges of said side and front panels of said outer ply, substantially triangular reinforcing tabs cut from said inner ply seating on and secured to the inner faces of the side panels of said lid and having their bottom edges inclined oppositely to the top edges of said side Wall panels of said inner ply of said body, said lid being adapted and disposed to be swung about said hinge line forwardly and downwardly to closed position fitting over the upper portions of said side and front panels of said body inner ply with the bottom edges of said tabs seating on the top edges of said body inner ply side panels and the bottom edges of said top and front panels seating on the top edges of said body outer ply side and front panels effective for resisting downward movement of said lid beyond closed position, and a positioning and securing tongue cut from said body inner ply secured to the inner face of the front panel of said lid and adapted and disposed to fit snugly in the corresponding opening in said body inner ply effective for resisting downward movement of said lid beyond closed position and for guiding said lid in closing thereof assuring seating of the bottom edges of said tabs and said side and front panels of said lid on the top edges of the corresponding panels of said inner and outer plies of said body.

References Cited in the file of this patent UNITED STATES PATENTS 149,549 Vickery Apr. 7, 1874 887,729 Kirmse May 12, 1908 1,268,146 Pinkerton June 4, 1918 2,068,095 Weltzien Ian. 19, 1937 2,098,818 Andrews Nov. 9, 1937 2,361,597 Buttery Oct. 31, 1944 2,361,659 Smith Oct. 31, 1944 2,441,445 Ringler May 11, 1948 2,468,543 Chalmers Apr. 26, 1949 2,473,055 Guyer June 14, 1949 2,672,273 Smith Mar. 16, 1954 2,701,679 Goldstein Feb. 8, 1955 2,758,780 Imbs Aug. 14, 1956 2,789,746 Hovland Apr. 23, 1957

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