US2428845A

US2428845A - Carton closure

Info

Publication number: US2428845A
Application number: US518843A
Authority: US
Inventors: Guyer Reynolds
Original assignee: Waldorf Paper Products Co
Current assignee: Waldorf Paper Products Co
Priority date: 1944-01-19
Filing date: 1944-01-19
Publication date: 1947-10-14
Anticipated expiration: 1964-10-14

Description

. proof.

Patented oct. 14, 1947 i l I I UNITED STATES PATENT OFFICE CARTON CLOSURE Reynolds Guyer, St. Paul, Minn., assignor to Waldorf Paper Products Company, St. Paul, Minn., a corporation of Minnesota Application January 19, 194;; Serial No. 518,843 9 Claims. 229-31) My invention relates to an improvement in in the fact that the fold of carton stock along carton closure wherein it is desired to provide the one seam where leakage can most readily a means for rendering cartons relatively leakoccur forms a wall thickness of several plies at In my previous application, Serial No. 477,845, forcing the container at this point. The extension d March 3, 1943, I described a carton for conof the fold into the interior of the container also taining liquid products to'be frozen. This carton makes it more difiicult for liquid to seep from in preferred form comprises a rectangular tray the container along the upper end wall seam.

having diagonally folded corner gussets and a In the form of construction illustrated the top closure having an opening therethrough l0 container comprises five panels of stock, two of I through which the carton could be filled. As the which are overlapped to form a rectangular body the body of the carton was formed in the shape of readily be formed with little likelihood of leakage a tray having diagonally creased corners, no leakbetween the two overlapped and connected panels. age could occur through this lower portion of the By subsequently folding the corners of the concontainer. In handling the cartons after the tainer so as to form the lower portion of the movement of the container had a tendency toportion of the container is virtually impossible cause the liquid within the container to surge if the stock is water-proof. As a result nly from one end to the other thereof. This surging those seams through which no leaka e may o cur of liquid within the container causes a certain with relative ease, are allowed to remain in the seepage from the container at the structure. These seams in the construction ilends thereof between the end walls of the conlustrated lie along the upper edges of the end tainer and the end flaps of the top closure. Thus Wail- By Providing a fold o te a nwardly while the containers were relatively liquid tight of th e se ms, the seams are reinforced and less this surging'action of the liquid during moveeaka e will therefore result.

ment of the container sometimes forced a cer- These n h r bj t and nov l eatures of tain amount of liquid into the end flap construcmy invention Will be m ea y a fu ly set tion, wasting a certain amount of the liquid and so forth in t following fica n and claims.

causing some slight leakage therefrom. In t e d aw gs forming a p t Of y p fi- The object of the present invention is to overcationi come this previously encountered difficulty. This igure 1 is a pe s V ew of a container I accomplish by providing a fold material proin C pleted set up fO jecting into the interior of the container near Figure 2 is a longitudinal se ion hr u h the 1 each end thereof at the junction between the end container showing the s u n th r f.

surging of liquid within the container and also 40 Seamtends to reinforce the container along the seam re 4 is a diagrammatic view of the blank of between the end wall and the top closure to prewhich the Container is formed. vent leakage at this point. Figure 5 is a longitudinal section througha A feature of the present invention lies in the modified form of Carton Construction. act that the fold of material extends into the Figure 6 's an enlarged view through one of the interior of th c tain r near th ends thereof end walls of the container illustrated in Figure 5.

and provides a guard against which liquid may Figure 7 is a diagrammatic view of the carton surge during handling of the c t i filled blank of which the carton illustrated in Figure 5 with liquid. This fold acts to reinforce the con is formedtainer along the upper end seam and prevents The carton A, illustrated in Figures 1 through the entire weight of the liquid within the con- 4 Of the drawings, includes a top C o Panel tainer from pressing against the container end I 0 connected alon a fo d line I l to a side wall wall. panel l2. The side wall panel I2 is connected A further feature of the present invention along a fold line l3 to the bottom panel [4. The resides in the fact that the reinforcing fold may bottom panel 14 is connected along a fold line he formed as an integral part of the top closure l5 to a side wall panel [6 which in turn is of the container or may be formed as a part of connected along a fold line I! to the top closure the end wall of the container. Each structure panel l9 which designed to extend in underlaphas its individual advantages over the other. ping relation with the panel l0. Strips of A further feature of the present invention lies moisture-proof adhesive 20 are coated upon the panel l9 as illustrated, or upon the undersurface of the panel I0, and the container is formed into tubular relation by overlapping the panel Ill with the panel l9.

The containers are usually shipped in this flat formation with the panels in and I9 secured An end wall panel 20 is connected to one end of the panel |4 along the fold line 2|, while a panel 22 is connected to the other end of the bottom panel l4 along a fold line 23. A flap or flange 24 is connected to the end wall 20 along the double creased lines 25, while the flap or flange 26 is connected to the panel 22 along the double fold line 21;

Corner members 29 are foldably connected along fold lines 30 to the end wall panel 20 and are connected along fold lines 3| to the side walls I2 and H5 respectively. members 32 are connected along fold lines 33 to the end panel 22 and are connected along fold lines 34 to the side wall panels |2 and I6, respec tively. The

corner members

29 and 32 are diagonally creased along diagonal fold lines, indicated by the numeral 35.

The top closure panel I is connected along a fold line 35 to a flange 31, which in turn is connected along a fold line 39 to a second flange 4|] slightly wider than the flange 31. A flange 40 is connected along a fold line flange 42.

At the opposite end of the panel H), a flange 43 is connected along a fold line 44 to the panel l0, and this flange 43 is also connected along a fold line 45 to a second flange 46 similar to the flange 43, but slightly wider than the same. A flange 45 is connected along a fold line 41 to the end flange 49.

A substantially rectangular hinged closure 55 is die cut from the body of the panel l9, being connected thereto along a creased hinge line A closure panel 52 is similarly cut from the panel l0, being connected thereto along the creased fold line 53. When the panels l0 and I9 are in overlapped relation the fold lines '5| and 53 coincide, but the closure 52 is somewhat larger than the closure 50, forming an oil-set between the two closure panels. The

closure panels

50 and 52 are connected together by a portion of an adhesive strip 20 so as to pivot in unison, but the smaller opening of the panel 50 forms a ledge upon which the marginal edge of the larger panel 52 may rest.

The manner in which the carton blank is folded into tubular relation has been mentioned. In assembling the carton for use, the

end walls

20 and 22 are folded up into substantially right angular relation with the bottom panel l4, the corner

gusset forming members

29 and 32 folding along the fold lines 35. A substantially triangular flap of double thickness is thus formed connected along a vertical line to each end of each

end wall

20 and 22.

The closure panel H) is folded along the

fold lines

36 and 44, and the material is doubled back on itself along the

fold lines

39 and 45 so as to provide folds of double thickness stock at each end of the container. As illustrated in Figures 2 and 3 of the drawings, this double thickness fold extends inwardly of the container, the wider flange of each fold, 4|] and 46 respectively, urging the double fold toward the under-surface of the panel I9. The

outer flanges

42 and 49 are then folded down over the triangular

corner gusset members

29 and 32 and overlie the

marginal flanges

24 and 26 on the end walls 4| to the end Corner gusset forming 20 and 22. flaps which are a carton construction 13 The

flaps

42 and 49 may then be secured in position by any suitable means such as by the use of tape strips 54 which hold the corners in proper formation Thus it is seen that a double thickness fold is provided along the upper edge of each end wall which is the only point where leakage might readily occur. This double fold reinforces the seam against the surge of liquid within the container and also provides a firmer connection between the flaps on the end wall panel and on the top closure panel respectively. It will been seen that should the flanges issuing from the top panel l0 fold directly over the

flanges

24 and 26 on the end walls 20 and.,,22, respectively, there would be no contact between these flaps before the center of the fold between the

end wall panels

20 and 22 and the flanges 24 and 25. With the present construction contact occurs throughout a longitudinal area of the curve, thus increasing the effectiveness of the seal at this point a considerable extent.

In Figures 5, 6. and '1 of the drawings I disclose which difiers slightly in construction from that illustrated in Figures 1 through 4. The carton 13 includes a top closure panel 55, a side wall panel 55, bottom closure panel 51, side wall panel 59, and underlapping closure panel Gil connected in the order stated by parallel fold lines 6|, 52, G3 and 64. The end wall panels 85 are connected to opposite ends of the bottom panel 51 along fold lines 66. Corner gussets, from which members 61 are connected along fold lines 59 to the opposite ends of the end panels 65, are connected along fold lines 19 to the side wall panels 56 and 59. The corner gusset forming members 61 are provided with diagonal fold lines 1| along which the corner members may fold into triangular flaps foldable to overlie the end walls 65.

Flanges

12, 13, and 14 are connected to the end walls 55, the flange 12 being connected thereto by a fold line 15. The flanges 12 and 13 are separated by a fold line 15. while the flanges 13 and 14 are separated by the fold line 11. The

fold lines

15, 16, and 11 are parallel to each other, and to the fold line 56 connecting the end panel 65 to the base panel 51.

Flaps 19 are connected to the top closure panel 55 along fold lines 89. The folds are substantially aligned'with the

fold lines

66 and 10. A hinge closure panel 8| is cut from the body of the panel 6|] and is connected thereto along the fold line 82. Aslightly larger dimension hinge closure panel 83 is out from the body of the top closure panel 55 and 5 connected thereto along the fold line 84. The panel 60 overlaps the panel 55 and is adhered thereto by suitable means, such as the strips of adhesive 85. The iold lines 82 and 84 coincide and the hinge closure panels 8| and 83 are secured together to open in unison, the marginal edges of the larger panel 83 resting upon the body of the panel 60 surrounding the hinged closure panel 8|.

In assembling the carton B, the flanges 12 and 13 are folded so that these flanges lie parallel in superimposed relation. The end panels 55 are then erected into substantially right angular relation with the bottom panel 51, the double thickness fold formed by the flanges 12 and 13 extending into the body of the carton and underlying the under'suriace of the panel 69. As the end walls 65 are erected the corner members 61 fold along the diagonal fold lines 1| to form triangular folded to overlie the outer surface I of the end wall 65. The flaps or flanges 14 are overlie these triangular corner the top folded down to guard and also as agseal for the contents of the carton.

and extending into proximity with the opposite body wall, a double thickness fold hingedly connected to the edge of said closure wall and exan end Wall of said carton, double thickness fold folded over and lying outwardly of said end wall.

5. A carton comprising a tray shaped body including a bottom panel, side wall panels foldably els. connecting diagonally folded corner gussets between saicl'end walls and said side walls, said adopted to fold outwardly of said 7. A carton eluding a base panel,

adjacent end wall, p on said double thickness fold folded outwardly of the gusset portions of the adjacent end Wall.

REYNOLDS GUYER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 631,642 Morgan Nov. 21, 1899 610;4'74 CoWles Sept. 6,1398

2,041,932 Hutchins, Jr May 26, 1936 906,780 Davis Dec. 15, 1908 FOREIGN PATENTS Number Country Date 4,888 Great Britain Oct. 5, 1905