US2405499A

US2405499A - Container for frozen foods

Info

Publication number: US2405499A
Application number: US501998A
Authority: US
Inventors: Guyer Reynolds; Russell J Hennessey
Original assignee: Waldorf Paper Products Co
Current assignee: Waldorf Paper Products Co
Priority date: 1943-09-11
Filing date: 1943-09-11
Publication date: 1946-08-06
Anticipated expiration: 1963-08-06

Description

1946. R. GUYER EIAL CONTAINER FOR FROZEN FOODS Filed Sept. 11, 1943 2 Sheets-Sheet l g- RQGUYERET AL 2,405,499

CONTAINER FOR FROZEN FOODS- Filed Sept. 11, 1943 2 Sheets-Sheet 2 Patented Aug. 6, 1946 CONTAINER FOR FROZEN FOODS Reynolds Guyer and Russell J. Hennessey, St.

Paul, Minn, assignors to Waldorf Paper Products Company, St. Paul, Minn, a corporation of Minnesota Application September 11, 1943, Serial No. 501,998

3 Claims.

Our invention relates to an improvement in a container for frozen foods, or the like, wherein it is desired to provide a container which is simple to erect, convenient to use, and which will permit the freezing of goods contained therein in a short period of time.

A feature of our invention lies in the formation of a container having upper and lower walls formed of a single thickness of materal and having vertical side walls formed of a plurality of thicknesses of material. As a result the food products contained therein ma be quickly and easily frozen by conduction of heat through the upper and lower walls of the container, and at the same time the container ma be possessed of considerable stacking strength. It is desirable that the upper and lower walls of the container be relatively thin as heat tends to rise vertically. At the same time it is important that th side walls of the container be sufiiciently strong to permit the containers to be stacked to considerable heighth after the contents thereof have been frozen.

lA feature of the present invention lies in the formation of a container blank which may be readily erected in an extremely short period of time without the necessity of special forms or equipment. Our container is so constructedthat it may be easily folded into erected form in a short period of time, even by inexperienced persons.

A further feature of the present invention lies in the provision of a container comprising a series of panels connected along fold lines, and in the provision on opposite ends of one of said panels of flaps which may be folded upwardly into substantially U-shaped formation. While so erected a reinforcing sleeve may be positioned to encircle the opposed U-shaped walls, thereby providing a container ready to be filled with material to be fro-zen.

A feature of the present invention lies in the fact that after erection of the walls of the container so that the same may be filled, the re- .45

result the container may be sealed by taping or otherwise adhering this flap to the upper container wall. As the taping takes place closely adjacent a vertical wall of the container the top wall is reinforced during the taping operation,

An additional feature of the present invention lies in the provision of a container, the side walls of which are reinforced by a reinforcing sleeve. This sleeve extends externally of some of the walls of the container and extends internally of the remaining walls of the container, thereby being interwoven with the container walls. Thus when the container is sealed the reinforcing sleeve can not become dislodged or out of place, due to the manner in which it is interwoven with the container walls.

These and other objects and novel features of our invention will be more clearly and fully set forth in the following specification and claims.

In the drawings forming, a part of our specification:

Figure 1 is a diagrammatic view of a container blank showing the construction thereof.

Figure 2 is a perspective view of the container blank shown in Figure 1 with certain portions thereof erected to show the first step in erecting the finished container.

Figure 3 is a perspective view of a reinforcing sleeve used in conjunction with the container blank shown in Figures 1 and 2.

Figure 4 is a perspective View of the container shown in Figure 2, with the reinforcing sleeve illustrated in Figure 3 applied thereto.

Figure 5 is a perspective view showing the manner in which the top or covering wall of the container may be applied to the remainder of the container. I

Figure 6 is a perspective view of the sealed eontainer, portions thereof having been broken away to disclose the relationship of the parts thereof.

The container A includes a bottom panel In foldably connected along fold lines H and 12 to side wall panels I3 and It. The wal1 panel I3 is connected along a fold line IE to a top closure panel [6. This closure panel I6 is connected along the fold line I! to a fiap or flange [9. At the opposite end of the blank the wall panel I4 is connected along a fold line 20 to the flap or flange 2|.

The bottom panel In is connected along one end by a fold lin 22 to an end wall panel 23. This bottom wall IE! is also connected along a fold line 24 to the opposite end panel 25, The

panels

23 and 25 do not extend quite the full width f the panel I0. The panel 23 is connected along

parallel fold lines

26 and 21 to flaps 29 and 30 respectively. Similarl the end wall panel 25 is connected along opposed fold lines 3| and 32 to

flaps

33 and 34 respectively. As will be noted from Figure l of the drawings the

fold lines

26 and 30 are offset inwardly from the fold line [I so that in erected position the

flaps

29 and 33 may lie inwardly of the wall panel l3. Similarly the

fold lines

21 and 32 are offset inwardly from the fold line l2 so that the

flaps

39 and 34 may lie interiorly of the wall panel l4.

Locking

tabs

35 and 36 are foldably connected to the opposite ends of the flange or flap 2|. Opposed

flaps

31 and 39 are likewise connected to the top or cover panel l6 along parallel fold lines 40 and 4| respectively.

The containers A are ordinarily shipped in fiat formation as shown in Figure 1 of the drawings. When food products are to be frozen there'- in, such as eviscerated poultry, or the like, the container blank is laid flat upon a table or other surface and the

end walls

23 and 25 are folded upwardly at right angles along the fold lines 22 and 24 respectively. The

flaps

29 and 30 on the wall 23 are folded along the

fold lines

26 and 21 respectively to assume the U-shape best illustrated in Figure 2 of the drawings. Thus the container blank is provided with two opposed U-shaped wall sections erected as noted in Figure 2. r a

The nextstep in the formation of the container is to apply the reinforcing sleeve 42 to encircle the U-shaped wall sections just described. The sleeve 42 is provided with

opposed end walls

43 and 44 and

opposed side walls

45 and 45. These walls are held in rectangular relation by any suitable means such as by the overlapping flap 41 on the side wall 45 which is stitched to the marginal edge'of the end wall 43. -This sleeve 42 is positioned to encircle the opposed U-shaped wall sections as best illustrated in Figure 4 of the drawings, thus providing a rectangular receptacle having four side walls and a bottom wall and having an open top.

It is important to note that when the rectan gular receptacle illustrated in Figure 4 is com-; plete, the remaining panels and firms of the container blank may lie fiat upon a supporting surface. Usually the cover panel is hinged to the upper edge of the receptacleso as to fold down over the open top thereof. In the present construction, however, only the

end walls

23 and 25 with

theirrespective flaps

29, 30, 33, and 34 are erected out of the blank.

After the container has been filled the side wall panel 3 is folded up parallel to and adjacent the side wall 45 of the sleeve 42, this folding taking place along the fold line H. The cover panel l6 may then be folded down to closf the open upper end of the receptacle, the

flaps

31 and 39 being inserted between the

end walls

23 and 25, and the

end walls

43 and 44 of the sleeve 42; Thus the flaps 3'! and 39 are received within and between the two plies of the end walls, further reinforcing these end walls. The flange or fiap l9 is preferably folded down externally of the sleeve wall 46 extending parallel to and adjacent this wall 46.

After the container cover has thus been closed the wall panel I4 is folded along its fold line |2 so as to lie parallel and adjacent the sleeve wall 45. This wall panel l4 encloses the sleeve wall 46 and also overlies the flange or flap 9.

'The'flange 2| is then folded to overlie 2. mar-- ginal edge of the top or cover panel I6, as best ,illustratedin Figure 6 of the drawings. During 4 this folding of the flap 2| along the fold line 20, the locking tongues or

flaps

35 and 36 are tucked in between the outer surface of the

flaps

31 and 39 and the inner surface of the

sleeve walls

43 and 44. A sealing tape such as 49 may then be adhered to the flange or flap 2| and to the cover panel I9 to seal the container in closed position.

From the foregoing description it will be obvious that the upper and lower walls of the container, with the exception of the relatively small area thereof covered by the flange 2| and the tape 49, are of single thickness, and therefore conduct heat with comparative ease from the interior of the container. At the same time, however, the container walls are strongly reinforced by the numerous thicknesses of material forming these walls and by the reinforcing sleeve 42. Thus the container will withstand considerable compression, while at the same time containing thin walls for quick freezing of the contents of the container.

It will also be noted that the container is extremely simple to erect and assemble and this may be quickly accomplished even by inexperi enced persons. No form is required to erect the container as the opposed U-shaped wall sections form a simple support for the reinforcing sleeve.

It will also be noted that while the reinforcing sleeve 42 extends externally of the end.

walls

23 and 25 of the container and externally of the

flaps

29, 39, 33 and 34 attached to these end walls, at the same time'the sleeve is enclosed by the opposed wall panels l3 and I4 of the container blank. Thus the sleeve is interwoven with respect to the walls of the container and can not be dislodged from place.

In accordance with the patent statutes, we have described the principles of construction and formation of our container and while we have endeavored to set forth the best embodiments thereof, we desire to have it understood that obvious changes may be made within the scope of the following claims without departing from the spirit of our invention.

We claim:

1. A container comprising a series of four panels foldably connected together, one of said panels forming a carton bottom wall, end walls foldably connected along opposite edges thereof, flaps on opposed edges of said end walls, each end wall and its flaps forming a U-shaped wall when erected on said bottom wall, said end walls and flaps being of similar height a separate reinforcing sleeve arranged to fit closely about said U-shaped walls, two of the remaining panels of said series being arranged to lie outwardly of said sleeve to form outer side walls, the remaining panel forming a top cover for the container, and opposed flaps on said top panel 'engageable between said reinforcing sleeve and said end walls.

2. A container comprising a bottom panel,.substantially U-shaped wall sections of equal height throughouttheir length erected upon said bottom panel, a sleeve arranged to encircle said wall sections, and foldably connected panels foldably connected to said base panel and arranged to fold into tubular formation to encircle said reinforcing sleeve.

3. A container comprising a base, panel, substantially U-shaped wall sections foldably connected at the center thereof to opposite ends of said base panel and erected thereupon, the ends of said wall sections having edges abutting said base panel, a reinforcing sleeve encircling said U-shaped wall sections, a side wall panel foldably connected to said base panel and engageable over one side of said reinforcing sleeve, a top panel foldably connected to said side wall and arranged to close the upper end of said sleeve, opposed flaps on said cover panel engageable between said U-shaped wall sections and opposed ends of said sleeve, a second wall panel secured to said base panel opposite said first named side wall, a flange on said. second wall panel arranged to overlie the marginal portion of said top panel, and locking tabs on said flange engageable between said opposed flaps and the adjacent portions of said sleeve.

REYNOLDS GUYER.

RUSSELL J. HENNESSEY.