US2241459A - Package - Google Patents

Description

May 13, 1941. A

Filed March 9, 1939 s. R. HOWARD PACKAGE .2 Sheets-Sheet l FJIQL? INVENTOR BY i d. 55 mum.

ATTORNEY S. R. HOWARD PACKAGE Filed March 9, 1939 May 13, 1941.

2 Sheets-Sheet 2 INVENTOR R. We!

Patented May 13, 1941 PACKAGE Stanley R. Howard, Milton, Mass, assignor to Pneumatic Scale Corporation, Limited, Quincy, Mass., a corporation of Massachusetts Application March 9, 1939, Serial No. 260,767

7 Claims.

This invention relates to a novel package.

In general the object of the invention is to provide a novel construction of package possessing substantial strength, moisture resistance, and rigidity, which may be economically manufactured, which presents an'unusually atttractive appearance and in which the top of the package is closed in a novel and highly efficient manner, adapted to afford a maximum protection to 'the commodity contained within the package.

With this general object in view and such others as may hereinafter appear, the invention consists in the package hereinafter described and particu larly defined in the claims at the end of this specification.

In the drawings, illustrating the preferred embodiment of the invention, Fig. 1 is a blank from which the present carton may be constructed and which comprises the inner section or body portion of the completed carton; Fig. 2 is a composite wrapper of metal foil and paper; Fig. 3 is a perspective view of the completed carton; Fig. 4 is a section on the line 4-4 of Fig. 3; Fig. 5 is a perspective detail of the top of the carton before the top closing operation is performed; Figs. 6 to 9 inclusive are detail views showing the various steps taken in producing the novel top fold of the present package; Fig. 10 is a plan view of the completed package, and Fig. 11 is a detail view of the usual bottom fold preferably employed in the, production of the present package.

In the drawings, the present package comprises a container formed from a carton blank comprising,a body portion provided with top and bottom flaps projecting therefrom. The bottom flaps of the carton may be closed and sealed in any usual or preferred manner. Provision is made for enclosing the carton within a novel wrapper, adapted to afford maximum protection for the packaged commodity, comprising a composite sheet formed by laminating a thin metal foil and a paper sheet and the wrapper is disposed with the metal foil forming the outer surface of the along a line passing through the middle of the carton to form an upwardly extending folding portion which is then folded and overfolded to be fiat upon the surface of the carton. The folded top portions may then be adhesively or otherwise secured to the top of the wrapped carton to form a tight and highly eflicient top closure for the carton.

Referring now to the drawings which as above stated illustrate the preferred embodiment of the invention, l0 represents a carton blank preferably composed of light, flexible board stock from which the present wrapped package may be wrapped package. The paper sheet of 'the lamisuperior manner thus eliminating the separate produced. The carton blank comprises a body portion l2 having top flaps l3, l4 and bottom flaps I6, [I for forming the closures of the top and bottom of the carton. Provision is made for scoring-the lines I5 connecting the flaps l3, l4 and l6, I! with the body-portion l2 in order to providesharply defined corners at the top and bottom of the carton formed from the carton blank. The body portion of the carton is, however, preserved otherwise free from score lines so that when the blank is folded around the usual forming block in producing the carton, the vertical corners l8 of the carton are caused to assume a definitely rounded shape and when wrapped as will be described, this rounded shape imparts to the finished package a characteristic and highly attractive appearance.

In the manufacture of the package the carton may in general be formed and filled in accordance with the usual practice and it is preferred to wrap the carton blank about the usual forming .block of a carton forming machine and to fold and seal the bottom flaps of the carton in the usual manner. It will be noted that the carton blank I0 is cut in such a manner that when the carton is formed, the side seam or overlapping edges l9, 2| see Fig. 4, will be located on one of the narrow side panels of the carton, away from the corneras is the usuai practice-in order that the overlapping portions will not interfere with the forming of the rounded shape on the corners l8. In this condition the partially formed carton may then be wrapped and in accordance with the present invention, the wrapper wrapper 20 may be wrapped about the carton 5 while the latter is on the block with the metal foil forming the outer layer of the composite wrapper and provision is made for adhesively securing the wrapper to the extended side flaps l3,

H and also to the body portion of the partially formed carton by a body of adhesive 22 which is arranged to extend at least about the mouth of the body portion of the carton in order to provide a tight closure between the wrapper and the body portion at the upper portion of the iatl5 ter, so that during the subsequent filling of the carton the material is prevented from entering between the wrapper and the body portion of the carton. The overlapping edges 23, 25, see

Fig. 4, forming the side seam of the wrapper is likewise arranged to extend along one of the narrow side panels, instead of at the corner l8. In some instances it may be desirable to adhesively aillx the wrapper to the entire surface of the body portion of the carton. The lower portion 25 24 of the wrapper is preferably arranged to extend below the body portion of the carton thus supported upon the block and is then folded and sealed to form a wrapped closure for the previously closed and sealed bottom flaps l6, ll of the carton and any usual or preferred method may be employed in folding the bottom portion of the wrapper and of adhesively aflixing the over-lapped portions thereof. It will be noted that the bottom flaps l8, H are cut at a slight angle so that when the flaps are folded over to form the bottom of the carton, the full thickness of the flaps will not extendout to the edge, ofthe carton. This construction aflords a relief along the bottom edges of the carton over which surface of the package, and, inpractice, this may be accomplished by suitable movable blades such as 32, 33, or in any other convenient manner. The opposed sifie portions 44, 46 of the extended wrapper are then folded inwardly so that the flaps [2 together with the attached portions of the wrapper will lie flat upon the top of the package and on top of the previously folded end portions and, in practice, this operation may be performed by cooperating side pressers, indicated at 34, 36, or in any other preferred manner. The upper sections of the wrapper are thus brought together to form an upwardly extending folding tab 38 having an inwardly folded portion at each end, to form in effect a bellows fold or pleated ends 39, as clearly illustrated in Fig. '7. The folding tab 38 is then folded centrally about a line 48 and the folded portions of the tab are then folded down upon the top of the carton as illustrated in Figs. 8 and 9. The folded portion 50, thus produced, may then preferably be secured in its folded position by a tape or label 52 which may be adhesively attached over the top of the fold and the adjacent surface of the top of the package, producing a package which is closed in a most emcient and tight manner. In some instances it may be preferred to simply secure the folded portion 50 itself to the top of the carton by an adhesive, in which case the label 52 may be eliminated. I

The triangular shape of the end flaps I3 is particularly conducive in forming the present top fold inasmuch as the attached portions of the wrapper are caused to be folded in the position they would naturally assume when folded in the manner described. The side flaps H are also cut at a slight angle, similar to the bottom flaps, to relieve the tension at the edges thus eliminating the sharp corner effect when the flaps are folded 0 down.

the extended end of the wrapper is folded to produce a softer or more rounded corner fold in accordance with the general design of the package.

After the carton has been partially formed 45 and wrapped, as thus described, it is removed from the forming block and may then be filled in the usual or preferred manner; When packaging finely divided material such as coffee, it is preferred to fill the carton in such a manner as to compress the material within the carton.and also to an extent such as when the top closure is completed the material will be held within the carton under some degree of pressure thus mina or other material. In addition the complete filling of the carton serves to effectively round out As a modified form of the above described top closure it may be preferred to eliminate the triangular carton flaps l3 to the end that a carton 0 of materials such that the package may be ecoimizing the amount of air retained within the 55 carton after the latter has been filled and closed and assisting in retaining the flavor of the coffee the comers l8 of the carton and to present a smooth, wrinkleless body portion, thus contributing to the attractiveness of the appearance of the complete package. After the filling operation, see-Fig. 5, the package is ready for the top closing operation and as the top flaps l3, II are adhesively secured to the extended ends of'the wrapper, as described, the extended wrapper 20 and the top flaps l3, ll are folded and sealed as one piece to provide a novel and superior top closure for the package as will now be described. As illustrated in Figs. 6 to 9, it is preferred to first tuck the opposed end portions of the ex-. tended wrapper l0, l2 inwardly so that the triangular end flaps l3 together with the attached portions of the wrapper will lie flat. upon the top nomically manufactured and at the same time the construction should be such as to preserve the natural oils and flavors in the packaged commodity. Accordingly the metal foil of the wrapper minimizes the escape of the flavor from the commodity and in order to further assist in accomplishing this result, it is preferred to provide the interior surface of the carton with a coating or layer 54 of lacquer or other moisture and oil repellant layer to prevent absorption of oils from the commodity by the material forming the body and flaps of the carton. I

While the preferred embodiment of the invention has been herein illustrated and described, it will be understood that the invention may be embodied in other forms within the scope of the following claims.

Having thus described the invention, what claimed is: 1

1. A new article of manufacture, a package comprising a carton having top and bottom flaps and a wrapper comprising a composite sheet of metallic foil and paper wrapped about the carton, the metallic foil forming the outer sheet, said wrapper being adhesively aflixed to and hav- 2,241,459 ing portions extending beyond said top flaps, and

having opposed portions of the top of said wrapper tucked inwardly to cause said top flaps and the afiixed portions of the wrapper to lie fiat and form the top of the carton and to bring the extended portions of the wrapper together to form an elongated folding tab having a pleat in each end, said tab being folded about a line adjacent the top of the carton and the folded portions of the tab being again folded and adhesively secured to the top of the carton, the opposed narrow top flaps being substantially triangular in shape to conform to and support the natural triangular shaped fold of said wrapper when said opposed portions are tucked inwardly.

2. As a new article of manufacture, a package comprising a carton provided with two triangular shaped top flaps formed as extensions of two opposed walls of the carton and two substantially rectangular top flaps formed as extensions of the remaining walls of the carton, and a wrapper wrapped about the carton and having its upper portions projecting above said top flaps prior to closing the carton, said projecting portion of the wrapper being closed to form in effect a bellows fold with triangular portions of the wrapper immediately overlying said triangular shaped and inwardly tucked flaps, and each of the substantially rectangular top flaps disposed between adjacent portions of the corner folds of the wrapper, the upstanding portion of the wrapper being folded upon itself and down upon the upper surface of the closed wrapped carton.

3. As a new article of manufacture, a'package comprising a carton provided with two triangular shaped top flaps formed as extensions of two opposed walls of the carton and two substantially rectangular top flaps formed as extensions of the remaining walls of the carton, and a wrapper wrapped about the carton and having its upper portions projecting above said top flaps prior to closing the carton, said projecting portion of the wrapper being closed to formin effect a bellows fold" with triangular portions of the wrapper immediately overlying said triangular shaped and inwardly tucked flaps, and each of the substantially rectangular top flaps disposed between adjacent portions of the corner folds of the wrapper, the upstanding portion of the bellows fold in the wrapper being folded downward upon the upper surface of the closed, wrapped carton.

4. As a new article of manufacture, a package comprising a carton provided with two triangular shaped top' flaps formed as extensions of two opposed walls of the carton and two substantially rectangular top flaps formed as extensions of folded to form a top closure in the form of a bellows fold havin'gtriangular shaped end tucks extending inwardly and immediately overlying and supported by the inwardly folded triangular shaped carton top flaps and with the ends of the remaining carton top flaps disposed between the comer folds of the wrapper top closure.

5. As a new article of manufacture, a package comprising a. carton provided with two triangular shapedtop flaps formed as extensions of two opposed walls of the carton and two substantially rectangular top flaps formed as extensions of the remaining walls of the carton, and a wrapper wrapped about the carton and having its upper portions projecting above said top flaps prior'to closing the carton, said wrapper being folded to form a top closure in the form of a bellows fold having triangular shaped end tucks extending inwardly and immediately overlying and supported by the inwardly folded triangular shaped carton top flaps and with the ends of the remaining carton top flaps disposed between the corner folds of the wrapper top closure, the upstanding portion of the bellows fold being overfolded and folded down upon the upper surface of the closed wrapped carton.

6. As a new article of manufacture, a package comprising a carton provided with two triangular shaped top flaps formed as extensions of two opposed walls of the carton and two substantially rectangular top flaps formed as extensions of the remaining walls of the carton, and a wrapper wrapped about the carton and having its upper portions projecting above said top flaps prior to closing the carton, said wrapper being folded to form a top closure in the form of a bellows fold having triangular shaped end tucks extending inwardly and immediately overlying and supported by the inwardly folded triangular shaped carton top flaps and with the ends of the remaining carton top flaps disposed between the corner folds of the wrapper top closure, the upstanding portion of the wrapper top closure be ing folded down upon the closed wrapped carton.

7. As a new article of manufacture, a package p comprising a carton provided,with two triangular the remaining walls of the carton, and a wrapshaped top flaps formed as extensions of two opposed walls of the carton and two substantially rectangular Atop flaps formed as extensions of the remaining walls of the carton, and a wrapper wrapped about the carton and having its upper portions projecting above said top flaps prior to closing the carton, said projecting portion of the wrapper being closed to form in effect a bellows fold with triangular shaped carton top flaps underlying correspondingly shaped and sized end tucks of the bellows fold inthe wrapper, the upstanding portion of the bellows fold in the wrapper being folded down onto the top of the closed wrapped carton.

STANLEY R. HOWARD.

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