US2603403A - Consumer type container end structure - Google Patents

Description

y 1952 Q G. s. THOMPSON 2,603,403

CONSUMER TYPE CONTAINER END STRUCTURE Filed May 22, 1947 4 Sheets-Sheet l Glenn 5- Thumpsszv July 15, 1952 G. s. THOMPSON CONSUMER TYPE CONTAINER END STRUCTURE 4 Sheets-Sheet 2 Filed May 22, 1947 5/5 2727 5. Thflmpsan 4 3 E y 15, 1952 G. s. THOMPSON 2,603,403

' CONSUMER TYPE CONTAINER END STRUCTURE- Filed May 22, 1947 4 Sheets-Sheet 3 G. S. THOMPSON CONSUMER TYPE CONTAINER END STRUCTURE Jqly 15, 1952 '4 Sheets-Sheet 4 Filed May 22, 1947 l l lllllllllu Patented July 15, 1952 U T DFST CONSUMERTYPE CONTAINER END v STRUCTURE Glenn S. Thompson, Milwaukee, Wis., assignor to Ira Milton Jones, River Hills, Wis.

Application May ZZ, 1947, Serial No. 749,751 10 Claims. (01.229 55) This invention relates to containers made from flexible sheet material such as paper or fiber board, or any suitable thin flexible sheet metal, and of the type which are adapted to provide inexpensive one-time packages for food products and the like. More specifically this invention relates to consumer type containers such as those illustrated in the patent to Lewis C. Brooks, No. 2,398,404, issued'April 16, 1946, and especially like those shown and described in the co-pending application of Lewis G. filed April 16, 1947, now Patent No. 2,589,045.

The containers of the aforementioned patent and co-pending application'are characterized by the provision of hollow rims at their ends having of the container so as to effectively preclude the entry of liquids into the interior of the rim.

A further object, of this invention resides in the .provision of an improved consumer type container' made from a single blank of flexible sheet material and which is fabricated in a manner Brooks, Serial No. 741,904,

the dual function of reinforcing-the bodyand 3 providing rigid closure supporting ledges flush with the ends of the body upon which the en'd closures may be readily adhered with a fluid tight seal.

' Containers made from a single blank of flexible sheet material in accordance with the aforesaid co-pending application, have the hollow closure supporting and. reinforcing rim formed from an inwardly folded extension running across the adjacent ends of all but one of the side wall forming panels of the blank with the extreme marginal edge of the inwardly folded extension The remaining side wall ofithe body has a cover flap extension at one or both ends thereof to provide'for closing the ends of the body.=

In forming up the tubular bodies of such containers, the rims are formed in the flat condition of the blank and after the blank hasbeen folded on the score lines defining the side walls from one another to produce a tubular body, the terminal ends of the rims are adhesively attached to the cover carrying wall in abutting relationship thereto.

One disadvantage there is danger of liquids in the container seeping past the abutting joint between the terminal ends of the rims and the cover carrying wall of the'container', such liquid entering the-interior of this construction is that.

anchored to the inner surfaces of the" side walls.

of the hollow rim to become trapped therein.

This conditionis exaggerated, of course, whenever the abutting connection between the ends of the rims and the cover carrying wall breaks loose from rough handling of the filled container.

With these objections to past containers in I which precludes leakage of liquids packaged'in the container.

With the above and other objects in: view, which will appear as the description proceeds, this invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more pa'rticue larly defined by the appended claims, it being understood that such changes in the precise em bodiment of the hereindisclosed invention may be made as come within the scope of the claims. The accompanying drawings illustrate several complete'examples of the physical embodiment of theinvention constructed according to the best modes so far devised for the practical application of the principles thereof, and in which:

Figure i is a fragmentary perspective view'of the upper portion of a container constructed in accordance with this invention and looking down at one back corner thereof Figure 2 is a longitudinal sectional view through the container of Figure 1 and taken alongthe plane of the line 2-2;

Figure 3 is a cross sectional view through'the container of this invention taken along the plane of the line 3-3 in Figure 2; i

Figure. 4 is a fragmentary perspective view somewhat similar to Figure 1 but having portions of the back wall and closure broken away to illustrate interior details of construction;

Figure 5 is a plan view of a portion of the cut and scored blankfrom which the container of Figures '1 to 4 inclusive is made; Figures is a fragmentary perspective view similar to Figure 1 but illustrating the manner inwhich the invention is embodied in a threesided container;

Figure 7 is a plan view showing a portion of a cut and scored blank from which the container of Figure 6 ismade;

, Figure 8 is a cross sectional view similar to Figure 3 looking at the underside of one end closure for the three-sided container;

Figure 9 is a fragmentary perspective view looking at one terminal end of the hollow" rim on the side walls of the container and illustrating a slightly modified manner of closing the ends of the rim; i

Figure .10 is a fragmentary perspective view showing a modified manner of sealing the hollow rim at the junction between the side walls of the container;

Figure 11 is a perspective view of the top portion of the body of a container having a cover supporting rim extending around the entire mouth of the container and illustrating an improved manner of sealing the rim at the cor-- ners of the body;

Figure 12 is a plan view of one end of the blank from which the container of Figurealll is made;

Figure 13 is an enlarged view of a portion of the blank shown in Figure 12; and

Figure 14 is a greatly enlarged detail perspective view of one inside corner of the container plication Serial No. 741,904, the extension is bent on the score lines It!) and 15 to dispose the inner strip lfi-substantially perpendicular to the side walls 6, with the intermediate strip l8 extending of Figure 11 showing the condition of the corner 7 seal for the rim just prior to closing the corner.

Referring now more particularly to the accompanying drawings in which like numerals indicate-like parts; it will be seen that Figures 1 to 5 inclusive pertain to a four-sided container made from'a single blank of flexible sheet material, such as paper or fibre board. Inasmuch as both ends of the container may be made in identical fashion, only the upper portion of the container has been shown, and it is to-be understood that the description, while directed to only the upper end of, the container, may-"apply to its lower end as well. r

The? fou-r-sided container illustrated in. Figares: l'to 5 inclusive comprises a backwall 5 to are joined three connected side walls 6' inta manner producing a tubular body-of substantially rectangular," or more particularly square, prismatic shape.

E'eferri'ng'bri'efiy to Figure 5, it will bev seen thatithe'hack' wall 5 comprises oneof the end panels of the'blank' from which the container is made and that the sidewalls 6. comprise'the three adjacent connected: panels of the blank connecting with one-side 'of the end wall forming' panel 5 as'shown. The other side edge of th'e'endi'wall forming panel 5is provided with the customary glue flap 1 which is adhered in overlapped relationship, to thefree side edge of the panel 6 at the opposite end of the blank to secure the panels 'intheir tubular body forming position. Y "The upper end portion 3: of the back: wall 5 is shown bent diagonally forwardly from a transverse bend line 9 shaped a distance inwardly of the transverse score'line [0 which extends'across the'three' side walls 6 and defines the upper open end of the body. The bend line 9 is, of course, defined by a suitable score on the'blank', and the strip 8 is swung forwardly therefrom to lie at an oblique angle to the plane ofthe back wall 5 as well as'to-the plane of the adjacent endv of the container body; This oblique strip extends transversely across'the full widthof the back wall 5 and has the cover flap llhinged thereto as at I 2;,-i-t being understood that; the hinge line isdefi-ned by a. suitable score on the blank.

It is important to note that the cover flap, together with the strip 8,'is formed as an extension on the end of the back wall 5, and that the strip 8- extends diagonally across the corner defined by the cover or closure II and the back .wall 5. Also it will be seen that the hinge line. I 2 lies substantially in the plane of the end of the container body and is parallel to the back wall 5 but spaced a distance forwardly thereof.

The three side walls 6 of the container are diagonally downwardly between the strip l6 and the. inner surfaces of the side Wall in which position these strips are rigidly maintained by adhering the outermoststrip I'lflatwise onto the, inner surfaces of the side walls beneath the strip 18, as shown best inFigure 2.: 5

The intermediate strut-like strip [8 and the outermost anchor strip -l'! are unbroken or uncut for their entire length, but'substantially triangular notches l9 are-cut. in the ledge forming. strips It at the score lines M to facilitate bending the blank'on these score'lines to'formup the tubular body of the container. The strip [8, however, is

provided with diagonal scoring 20 extending. between the'scores- [:5- and converging from the corners of the triangular notches IS on the innermostscore line 15, to a point at theintersections of theoutermost score IS with the vertical scores I4, as seen in Figure 5.

In-the forming up of the tubular'body, the diagonal scoring 20onthe strip I8 allows the portions thereof at.- the cornersdefined by the side walls to be doubled up flatwise upon itself or pleated inwardly into the'interior of the hollow formed by the strips l6; l1- and. I 8, beneath the flat ledge 16 thereofwith the upper free edges of the pleatsabu-tting the underside of theledge l6; while the triangular cutouts l9 produce abutting mitered' joints for the sections of. the ledge forming. strip 16; Inthis manner, the ledge 5' extends substantially continuously along the: side walls 6, while the strut-like strip [8 and the anchor'stripi fl extend uninterruptedlyand unbroken around ;,the side wallsto preclude leakage of liquids in the container into the hollow rim provided byithe inwardly foldedstrips of the extension, l 3-a t thecorners defined by the sidewalls 6.

The hollow rimthus formed has its terminal ends disposed substantially in abutting relationship with the sloping: portion- 8 of the back wall,

' and-only the anchor strip and the extreme lower portion of the strut forming strip l8 extend up to: the plane of the'back wall 1 'I-he ledge formingstrip It at the ends of the is cut off as seen at 22 in Figure 5, so as to squarely abut the sloping portion 8 of the back wall directly'at the hinge l'2, while the endportions of 'thestrutforming' strip H3 are scored along" substantially diagonal-lines 2'3 similar to thescoringv 26' so'that' the extreme ends 24 of thestrip IB outwardly of the-scores 23-, when bent inwardly away from the rimtalong the scores 23) allow the end portions of the strut forming strip to likewise abut the slanting portion 8 of the back wall 5-. V

The ends 24 of the strut-forming strip l8 provide. flaps, which when bent out from the terminal ends of the hollow rim, lie flatwise against the inner'surface of the slanting portion -8 of the back wall and extend the full distance between the bend lines 9 and ;I2 defining the sloping portion 8 of the back wall so that when adhered in this position, the flaps not only join the wall por-' tion 8 to the ends of the rim but also effectively seal off the terminal ends of the hollow rim'from the interior of the container. 7 i The opposite ends of the anchor forming strip II are-likewise provided with flaps 21 bent from scores 28 on the strip at the plane-of the back wall 5. These flaps 21- overlie the inner surfaces of the back wall 5 beneath or inwardly-ofthe slanting end portion -8 thereof and when adhered flatwise thereto as shown best in Figure 2 provide additional assurance against leakage of liquids past-the joint between the rim and the back wall and into the terminal endsofthe rim.

It should be noted that at the -endof the extension I3 adjacent to the back wall 5, the flap 21 on the anchor strip IT, as well as a 'portion of the flap 24 on the strut forming strip I8 is formed from stock out from the cover flap II, whichis accordingly notched out as at 29 for this purpose.- The bottom of the notch 29, however, lies intermediate the side edges of the ledge I6 therebeneath so that there is sufficient overlapping of the cover on the ledge at the notch toeffect proper sealing of the closure.- 11

Inasmuch as the container-when intended for packaging milk or other liquids has all of its surfaces coated with parafiinor some other adhesive coating capable of being activated to adhesiveness by the application of heat and-pressure to the overlapped or joining parts, it will be apparent that the sealing of the closure II upon the ledge I6 of the rim by the application of heat and. endwise pressure onto the container effectively seals the end of the container and precludes entry of liquid in the container'into any portion of thezhollow rim. Y.

Still further assurance against leakage of liquidspast the terminal ends of the rim may be had by bending the flap-like corners 33 onthe sidewalls adjacent to the terminal ends of the hollow rim over onto the exterior surface of the diagonal end or strip 8 on the back wall as seen in Figures 1 and 4, and adheringthese flaps thereto in the position shown so as to, in effect, clamp the end portions of the strip'8 between them and the inner flaps 240m the strut forming I strip I8. Atttachment of the flaps 30 to the sloping end 8 of the back wall also reinforces the connection between the sloping end 8 and the ends of the hollow rim to preclude the ends of the rim pulling away from the back wall under rough handling of the container.

Although the container shown in Figures 6, '7 and 8 is of substantially triangular prismatic form, the essential-features of the previously described container are embodied therein. The back wall 5' in this case likewisehas the cover flap II formed as an integral extension of the end thereof; the two side walls 6' which connect with'the back wall 5' likewise have a hollow 'rim at the end of the container formed by anextension I3 on the side walls; andflap's '24 and 21' on the terminal ends of the ri'm likewise fold over onto the inner surface of the-sloping wall p rtion 8 on the back wall to close the ends" of the rim and join the same to the back wall'ofthe container. Side wall flaps 38' may also beadhered to the exterior surfaces of the wall portion 8' to provide additional assurance" against--lea k 7 age of liquids'past the terminal ends 6f the rim.

In this embodiment, however, it isto be noted that the bodyof the closure II'is substantially triangular in'shape tofit the end-of the con tainr, and has flanges 35 bent downwardly from its side edges to overlie and be'adheredto the side walls 6'. as seen in Figure. 6 to reinforce the connection of the closure to the'iledge on the side walls.' 1 In this case also the bodyof the closure is preferably provided with a transverse score line 36 parallel to the back wall 5' and-leading to the flange'dedges of the "closure to provide a hinge upon'which the forward portion oftheyclosure may be lifted to thereby .uncovera pouring opening at the top of the container. Slits 31 leading downwardly from the ends of the score line 36 to the free side edges of the flanges facilitate lifting of theforward portion of the closure when it is desired to dispense the container contents.

- In both embodiments described, the flaps on the strut member have been bent toward the interior of the container, away from the rim on the side walls, but Figure 9 shows a condition where the flaps 40 on the'strut member at the terminal ends of the hollow rim aretriangular and shaped to fit over the open ends of the rim. This of course involves bending the flaps 40 outwardly to positions with their top edges II. resting against the ends of the ledge I6 so that the flaps are located between the ends of therim .and th sloping portion of the back wallat thewadjacent end of thecontainer.

. With the flaps 40 overlying and supported by the ends of the rim, it is" only necessary to exert heat and pressure on the sloping portion ofthe back wall in line with the hollow rim for secure- .ment of the sloping wall portion thereto. This assumes, of course, that a suitable adhesiveactivated by heat and pressure has been applied to the contacting surfaces involved.

Securement of the end closure onto the ledge I6- then securely. seals the joint between the upper portion of the flaps and the ledge in an obvious manner, and the end seal is completed and reinforced by adhering the flaps 42, which correspond in all respects to the .flaps 30 and 3ll, in place onthe exterior of the sloping portion of the back wall.

Another highly effective manner of precluding leakage of liquids into the hollow interior of the rimatthe corners defined'by the side walls of the container is illustrated in Figure 10. As here shown,- both the ledge I6 and strut forming strip I8 have' pleatedportions 45 and 45 respectively provided by suitable diagonally extending scores similarto the scores 20 seen in Figure 5. Hence,

there is no necessity for notching the ledge, as the provision of a slit along the upper edge of the strut forming strip I8 separates the two pleated portions from one another.

In forming up the container built in accordance with the Figure 10 disclosure, the pleated portions 45 on the ledge I6 are tucked downwardly into the hollow rim as the side walls are brought to their proper angular positions relative to oneianother to produce mitered corners on the ledge, while the pleated portions 46 are displaced inwardlyinto I the container away from the rim to bring the two halves of the pleat fiatwise together, in which condition they may be adhered together in any desired manner. It will also be seen that the flatw-ise overlapping sections of thepleat 46 may be swung against on surface of the strut-like element adjacent thereto and adhered to the same.

Figures 11 to14- inclusive illustrate another -manner of closingthe hollow rim atthe end (or 7 ends): of the container bodyto preclude seepage of liquid in the container into the interior of the rim. As herer'shown, the hollow rim extends around all of the'side walls ofthe body to provide a substantially continuous supporting ledge upon which .a separate flat end closure disc may be adhered.- The rim in this case is likewise formed from a transversely scored extension 50 extendizigxacross the side wall forming panels atone end (or both of the body blank and bent inwardly in the manner heretoforedescribed.

While the cover. flap indicated at in construction lines maybe formed asa separate disc, it is also 'desiredito point out that thecover may be formed as'an extension on the end'ofan' extra side wall forming panel on one end of the blank from "which the body is made overlapped on the exterior of the panel at the opposite. end of the blank in the same manner as in the attachment of the ordinary i'glueflap. This latter one-piece construction is illustrated and claimed in the aforementioned copending application, Serial No. 741,904 and forms no part of this application.

The featureof the container made in accordance with Figures 11 to 14 inclusive resides in an improved manner of sealing the hollowrim against seepage of liquids thereinto at the'corners of the body defined by the'respective' side walls thereof. 'For this purpose, the strut-like strip 52', whichextends diagonally between the inwardly-dir'ected ledge 53'a'ndthe inner surfaces of the side walls for attachment thereto 'by'the anchor strips '5'4',is likewise provided with pleat forming scores 55 which run divergently from the points ofintersection' between the outermost scores l5 andthe vertical scores i l to theinnermost score 15' and preferably terminate just short of this innermost score of the extension as'ishown, equidistant from the scores 14. 1 From Figure 13 it will be seen that the innermost scores 'l5'do not extend across the vertical scores-1 d but runup to and preferably terminate just short of the divergent ends of the scores 55. The ledge forming strip '53 ofthe extension 50, however, has substantially triangular cutouts .55 therein at the'scores I4 to facilitate folding of the hollow rim in the forming up of the tubular body to its assembled position seen in Figure 11.

The cutouts 55"have one apex 51 thereof at the points of intersection between the score lines l'llwhich define the end of' the body and vertical scores l4, and the other two corners '58 of each ofthe cutouts lie adjacent to the divergent ends of the-scores 55 on the strut forming strip -52 but are'disposed wholly on the ledge forming 'stlip' 53' so that their apexes are spaced inwardly ofthe innermost score IS.

The side of each of the cutouts adjacent to the innermost score I5 is formed by a pair of equal length cuts 59 which extend outwardly at a wide divergent angle to the corners 58 of the cutouts substantiall-yfrom the points of intersection between the innermost score I5 and the vertical scores M, as seen in Figure 13,'and these cuts define .the to edges 59' of'ieach of the halves of the pleatswhich result from the scores 55 and that portion of the vertical'scoring I4 included betweenthe scores 55.

. ,After bending of the extension 55 back upon itself and securement of the anchor strip 54 to the inner surface of the body side walls in its position maintaining the ledge and strut-forming strips 53' and 52 respectively in their hollow rim producing condition, the pleats defined by the scores 55*; a nd' the portions [4 of the vertical 8 Scores included therebetween may be readily folded together and tucked inwardly toward the corners of the body during the act of folding the body side. walls along the scores It to produce a. body of tubular shape. The two halves 60 of the pleats thusfold fiatwise together at the junctions of the side walls, as seen inFigure 11, and it is to behoted that the top edges 59' of the fiatwise engaged sections of. the pleats lie in the plane of theupper exposed surface of the ledge 53. v

The widely diverging cuts 59 of the triangular cutouts which define the top edges of the pleats on the strut-formingstrip 52 are necessary in order that these edges of the pleats lie .in the plane of the exposed surface of the ledge 53 for it will be readily appreciated thatthe edges of the pleats at the vertical score lines l4 tend to lift up during the operation of tucking the pleated portions inwardly toward the corners of the body. It will be seen that inasmuch as the apexes of the corners 58 of the cutouts55 lie inwardly of the innermost score l5, these apexes will lie wholly on the ledge 53 at locations intermediate the side edges of the ledge in the finished container.

Inasmuch as the top edges '59 of the pleats extend only partway toward the extreme corners of the body, the sides of the triangular cutouts 55 defining their apexes 51' are formed to close up and produce a mitered joint between the ends of the various :sections'bf the ledge, as seen in Figure 11.

In order to prevent buckling of the ends of the ledge sections when heavy stock is used, however, the sides of the cutouts adjacent'to'the topv edges .of the folded together pleats are relieved or notched slightly as at 62 an extent such that the bottom of thenotches engage the opposite sides of the folded together pleat when the corners are closed to substantially hold thepleat sections clamped together. Obviously, if the stock from which the container is made is thin enough, the notches 62 are unnecessary.

With this form of corner pleating, it. will be seen that the strut-like strip 52 which supports the inner edges of the ledge '53 is unbroken for its 'entire length, and that the application of the cover 5| flatwise onto the ledge '53 by means of a suitable adhesive thoroughly seals the rim against seepage of liquids thereinto at the corners of the body by its direct, engagement with the top edges 59 of the folded together pleats; and by the fact that the cover closes the only possible points at which leakage into the interior of the hollow rim may occur, and which points constitute the corners of the triangular cutouts all of which are disposed on the fiat ledge 55 beneath the cover.

The corner seal described is, of course, applicable to containers such asthose illustrated in the previous embodiment of" the invention and may be used advantageously in such containers at the corners defined by the side walls thereof in place of the pleated portions therein shown.

Referring again to Figure 13 it will be seen that the; opposite ends of the strut and ledge forming strips 52 and 53 respectively on the extension 50 are scored and notched so as to provide free substantially triangular flaps 60' on the bent. toward the glue flap corner of the body and adhered flatwise together in a :position closing the ends of the rim in the .same manner as the intermediate pleated portions so *as to assure a leak-proof joint between the ends of the hollow rim. The top edges of the flaps 60 also lieinthe plane of the exposed surface of the ledge so that the. cover is enabled to effect leak proof sealing of the rim atthe' glue flap cover of the body. Y

From the foregoing description taken in connection with the accompanying drawings git will be readily apparent thatflthis invention provides a'substantially leak-proof container of-relatively great strength and admirably suited for packaging liquid goods.v V g ,7 y ,I claim: H

1. In a consumer type container made from flexible sheet material: an upright tubular body including a number of connected flat side walls 010- joined with a relatively flat back wall; a sure for one end of the body fiatwise engaged with the adjacent ends of said side walls in perpendicular relationship thereto; means hingedly joining the closure to said back wall including a strip formed from a part of the back wall extending transversely thereacross at said end of the body and bent obliquely to the planes of the closure and back wall so as to lie substantially diagonally across the corner defined by the closure and the back wall; a hollow closure supporting rim carried by and overlying the inner surfaces of the side walls at said end of the body and extending continuously along said side walls to terminate in abuttingrelationship with said oblique strip on the back wall, said rim including a relatively flat ledge flush with said end of the body and upon which the closure is flatwise adhered, and a strut-like element connecting diagonally between the ledge and the inner surfaces of the said walls and extending without break around the side walls to prevent leakage of liquid in the container into the hollow interior of the rim at the corners defined by said side wall and flaps bent from said strut-like element at the terminal ends of the rim and flatwise adhered to the inner surfaces of said oblique strip on the back wall so as to effectively preclude entry of liquid into the terminal ends of the hollow rim.

2. The container set forth in claim 1 wherein both the closure and the oblique strip connecting therewith are formed as an integral extension of the back wall.

3. The container; set forth in claim i'wherein the closure and said oblique strip are formed as an integral extension of the back wall of the body, and wherein the juncture between the oblique strip and the closure provides a hinge for the closure substantially on a level with said ledge directly adjacent to the terminal ends of the hollow rim.

4. The structure 'set forth in claim 1 further characterized by the provision of flaps on the body side walls bent therefrom and flatwise adhered to the exterior surfaces of the opposite end portions of said oblique strip for reinforcing the connection of said oblique strip to the terminal ends of the hollow rim.

5. In a consumer .type container made from flexible sheet material: an upright tubular body including a number of connected flat side walls 1 faces" of the side walls closure to provide a hinge for the closure parallel to said back wall'but spaced forwardly from? the plane thereof and substantially on alevel with the plane of said end of the body;..a hollow closure supporting rim on said end of the'lbody formed from inwardly ends r the body side continuously along folded extensions .on said walls, said Tim. extending the side walls an'dite'r'minating in abutting relationship" with said' oblique 10' relatively flat ledge upon which the closure strip on the back wall, and said rim including a rests, and a strut-like strip connecting. substantially diagonally between said ledge-and the inner surto support the ledge and consequently the closure, said strutlike strip being unbroken for its entire lengthso as to preclude leakage of liquid in the container into the hollow rim at the corners of the container defined by said side walls; and flaps integral with the ends of the strut-like strip bent therefrom and adhered flatwise onto the inner surface of said oblique strip on the back wall so as to close the hollow interior of the rim at the inside of the container adjacent to the terminal ends of the rim.

6. The structure set forth in claim 5 further characterized by the provision of flaps formed as part of the side walls folded over and adhered onto the exterior surface of said oblique strip on the back wall whereby the portions of the oblique 1 strip adjacent to the terminal ends of the rim are substantially clamped between said last named flaps and the flaps on the strut-like strip to preclude leakage of liquids past the joint bejoined with a relatively flat-back wall; a closure for one endof the body comprising an extension on said back'wall flatwise engaged with the ad'- jacentends of said side walls in perpendicular relationship thereto, a transversely extending strip on' the back wallat said end of the body being bent obliquely forwardly toward the interior of I the body and terminatingat the plane of the tween the oblique strip and the terminal ends of the rim and to reinforce the connection between the oblique strip and the terminal ends of the rim.

7. In a consumer type container made from flexible sheet material: an upright tubular body having a pair of connected side walls joined with a back wall to give the body a substantially triangular prismatic form, said back wall including a strip extending transversely thereacross at one end of the body bent diagonally forwardly from a bend line parallel to the plane of said end of the body but spaced a distance inwardly thereof; a closure joined to said diagonal strip and flatwise engaged with the adjacent ends of said side walls to close said end of the body; a hollow closure supporting rim carried by and overlying the inner surfaces of said side walls beneath the v closure and extending continuously along the side walls to terminatein abutting relationship with said diagonal strip on the back wall, said rim including a relatively flat ledge flush with said end of the body and upon which the closure is fiatwise adhered, and a strut-like element connecting diagonally between the ledge and the inner surfaces of the side walls and extending along the same without break to prevent leakage of liquid in the container into the hollow interior of the rim at the corner defined by said side walls; and flaps bent from said strut-like element at the terminal ends of the rim and fiatwise adhered to said diagonal-strip on the back wall so as to preelude entry of liquid in the container into the terminal ends of the hollow rim.

of said back wall at said end of the body, and wherein the closurefor said end of the body comprises an extension :on said diagonal strip integral therewith.

9. The structure set forth in claim. 7, further characterized bythe provision of flanges on the closure bent from the sidejedges thereof'and flatwise adhered to the exterior surfaces of the side walls to reinforce the connection of the closure thereto. V V i v.

110. The structure set forth in claimr 9; wherein said closure is characterized by the pr visionof a scorein the flat surface thereof extendingen- .tirely thereacross'between the flanged edgesof t the-cl0sure, and wherein said fianges have slits 5 7" 1' i j. REFERENCES CITED The following references are of record in the file "of this patent: i UNITED STATES PATENTS V Number Name Date 936,986 Conley Oct. 12, 1909 1,861,206 Burgess May 31 1932 2,262,803 Huffild NOV. 18, 1941 2,398,404 Brooks Apr/16,1946

2,415,081 Brooks Febu 1947

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