US3071308A

US3071308A - Folding containers

Info

Publication number: US3071308A
Application number: US722169A
Authority: US
Inventors: Lange Ferdinand
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-03-20
Filing date: 1958-03-18
Publication date: 1963-01-01
Anticipated expiration: 1980-01-01

Description

F. LANGE 3,071,308

FOLDING CONTAINERS 2 Sheets-Sheet l Jan. 1, 1963 Filed March 18, 195e .tur lu il Jan. 1, 1963 F. LANGE FOLDING CONTAINERS Filed March 18, 1958 2 Sheets-Sheet 2 .Im/@non Unite @tats The invention concerns folding containers and is more particularly concerned with a process for producing and closing containers which are polygonal in cross section at least in the region of the upper end or top.

It has already been proposed in the manufacture of folded containers to produce containers such that all the fold surfaces or parts of the blank forming the closing strip or region are folded to form fold edges which run symmetrically and angularly to a line defined by a horizontal plane through the folded closing strip, for example, the lower edge of the closing strip whereby all edges of the fold surfaces or cut parts project at least as far as the upper edge of the closing strip or to the upper edge of a closing zone. In such a construction the closing strip stands upright or is raised from the closing surface in order that it may be sealed or glued or, as the case may be, folded down onto the closing surface and secured thereto.

in the case of prismatic boxes having straight edges the openings are covered in known manner by triangles corresponding to the number of edges which are connected one to the other by pairs of folding triangles. These pairs of folding triangles are folded such that the parts forming an edge strip run around the container. in this type of construction the outer triangles with their corresponding pairs of folding triangles are advantageously arranged to form rectangles. The pairs of folding triangles adapted to connect the triangles closing the container opening together are all folded outwardly and are located against the triangles used to close the container by bending them through an angle of 90 or in some cases through an angle of 180 adjacent the closing strip thus the container is closed by a flat surface from which, as required, the closing strip projects perpendicularly upwards.

By suitable choice of the angle of the triangles closing the container opening isosceles triangles rather than equilateral are used and in this instance it is possible to produce boxes that may be described as having the shape of the gable end of a building. in this case the actual bending of the parts of the blank in question is only effected in so far as the pairs of triangles arranged between the closing triangles are placed one upon the other and the folded triangles are arranged behind the rectangular surfaces and are placed in contact therewith.

ln a container of this type the result is a bendable closing strip the lower edge of which almost contacts at its tip the triangles which close the container opening as, for example, is the case in the prismatic boxes above mentioned. In hexagonal boxes the lower edge of the closing strip runs along one side of the closing triangles, this construction cannot of course be attained with boxes having the shape of the gable end of a building.

ln contradistinction to containers having a dat lid-like ciosure in which the closing strip must be comparatively wide in order that it can be securely sealed, the closing strip of gable boxes is made as narrow as possible so that it does not project unnecessarily above the top of the container. In constructing such containers it should be taken into consideration that the folding triangles which lie behind the rectangular fold surfaces reach the lower edge of the closing strip in a horizontal direction as far as the central region thereof. Theoretically they should therefore just touch, practically however, due to the fact that there is a certain thickness of material to be taken into 3,071,398 Patented Jan. 1, 1953 consideration, this is not the case so that generally on cutting off just above the lower edge a comparatively small channel is formed in the closing strip which in practice can no longer be sealed as the welding tools cannot penetrate into such a channel.

Above the channel there will be located the lower edge of the closing strip and the fold edge which is formed by the pairs* of folding triangles is located laterally between the closing triangles and within the closing edge the outer surfaces which are formed lby the rectangular closing parts. This folding edge runs in fact at a lesser angle to the closing edge than the angle of the folding edge which is formed by the triangles arranged behind the rectangular closing parts. At the point at which the first mentioned folding edge runs laterally into the closing strip there is in all cases an arrangement whereby the second folding edge has run out over the middle of the whole closing strip. The upper closing strip edge must therefore be approximately at the height of the points at which the first mentioned folding edges run between the pairs of folding triangles in the closing strip.

Accordingly the invention is c-haracterised in that in gable boxes at the upper edge of the closing strip the folding triangles arranged behind the rectangular closing parts is approximately of equal size as or somewhat larger than the upper edge of the folding triangles arranged in pairs between the closing triangles.

This has in addition the advantage that the closing strip at its upper edge is formed outwards by the rectangular closing parts whereby a simpler closing is rendered possible as in the other case the triangular parts of the closing strip extending outwards had to be taken by the closing tools.

it is expressly observed that the upper closing strip edge can of course project by means of extensions for the closing of any openings in the side walls or the rectangular closing parts of the container or for the tearing of the closure. y

In order to obtain a suitable `shape of container and in order also to increase with the same height the filling volume one can in the process according to the invention do away with the boundary lines between the side wall parts and the closing triangles as well as the boundary lines forming the lower closing strip edge. The resulting container receives a bottle like shape without stresses arising in the closing strip due to which certain closing is endangered.

As the closing strip is to be Very narrow and its lower edge in this case is not broken it may be difcult to break such a fold edge which should run between the closing triangles and the adjacent folding triangles arranged in pairs. This is also therefore the case as here the height of the closing strip, as the lower closing strip edge is not broken here, is dependent on the application of the welding tools whereby fluctuation can arise. It is therefore diflicult to allow this folding edge just to the point at which it must theoretically meet the folding edge between the closing triangles and the folding triangles lying behind the rectangular closing parts. Moreover the exact course of this fold line does not matter as it does not run as such through the closing strip.

This folding edge is therefore brought advantageously between the lower extension point of the pairs of folding triangles between the closing triangles and the point of intersection of the folding edge between the closing triangles and the folding triangles with the upper closing strip edge lying behind the rectangular closing parts. Such a folding edge is very rnuch easier to form. There result thereby unequal sided folding triangles in which the apex is displaced by about 2 to 30 to the pair of folding triangles. The unequal sided closing triangles are somewhat bent on welding whereby a further rounding occurs influencing the shape of the container whilst this symmetry of the folding edge passing through the closing strip however remains preserved in all cases so that stresses do not occur in the latter.

One may also of course proceed such that in the process according to the invention one does not start from a blank with pre-shaped closing strip but in that with a blank without pre-shaped closing strip corresponding unequal sided triangles rnust be provided in order to obtain a satisfactory closure by means of a narrow closing zone.

The invention is further characterised in that the base of the container is so closed that a closing strip bent at an angle of 90 or 180 is formed.

If the container according to the invention is to be filled with water then in order to avoid sporting of the liquid flowing in it may be advantageous to effect the closing in two stages.

Thereby one can either first weld the upper edges of the pairs of folding triangles between the closing triangle edges to one another so that then a four cornered opening results by which the upper walls of the container are inclined. A spurting when filling7 is therefore not to be feared here. One may however also first connect the upper edges of the folded triangles arranged behind the rectangular closing parts to the upper edges of these latter whereby a still smaller four cornered filling opening results.

The invention will be described further by way of example, with reference to the accompanying drawings in which:

FIG. 1 illustrates a blank of the kind used in the manufacture of a folding container made in accordance with the invention.

FIGS. 2 to 6 illustrate the method of folding the upper end region of the container during closing.

FIG. 7 is a diagrammatic sectional View of the upper end region of the container.

FIGS. 8 and 9 illustrate two methods of folding the upper end region of the container to provide an opening which allows filling of the container'.

FIGS. 10 to 12 show the method of folding and closing the base of the container and,

FIG. 13 is a perspective view of the container when filled and closed. A container made in accordance with the invention is, when folded, hexagonal in shape and has side walls 1 to 6. One Wall, 6, is provided with longitudinal edge strips 7 and 8 which are adapted to be folded in such a manner that the part S can be glued, welded or sealed to the side wall 1 so that the free edge of the part 8 is outwardly directed. This manner of folding therefore is adopted to ensure a water vapour and aroma tight seal.

During the manufacture of the container the

rectangular parts

9 and 10 on the

side walls

1 and 4, respectively and the actual closing parts 11 to i4 on the

side walls

2, 3, 5, and 6 respectively together with the folding triangles 15 to 22 located between the rectangular closing parts and the closing triangles are used, suitably scored, rouletted or otherwise marked fold lines being provided between the above mentioned parts to ease folding.

The parts of the blank serving for the closing of the base are formed to correspond to the above mentioned parts, the various parts of the base being indicated by the reference numerals 9 to 22.

The manner in which the upper end region of the container is folded is illustrated in FIGURES 3 to 6. Due to the fact that no scored lines or folding edges are provided between the side wall parts 1 to 6 the container receives a bottle like appearance. In the drawings there are lines indicated but these serve only to indicate the region in which bending occurs.

It can furthermore be seen in FIG. 6 that the actual l strip at the extreme upper end of the container is comparatively narrow and that the fold edge between the pairs of triangles f6, 17, 26' and 21 is directed angularly inwardly by a small amount adjacent the upper edge of the closure strip in the closure region.

As previously stated in detail there is thus the guarantee that the formation of a channel within the closure strip is prevented since the folded edges of the

triangles

11, 12, 13 and 14 abut one another. The abutment of these edges is illustrated diagrammatically and in detail in FiG. 7 which is a schematic view of the closure strip in which the fold edges are indicated between the

surfaces

15 and 11, and 22 and 14 respectively by the letters a and b. Theoretically the fold edges intersect at the level of the lower edge of the closure strip as indicated by the line c, in practice however they may not contact one another exactly at this position so that a line of cut through the closure strip at the line c, or just above this line would result in the formation of a channel. It can furthermore be seen from FIG. 7 that the fold edges d and e formed between the folding triangles 16, 17 and 2.5), 21 where they are above the lower closure strip edge run into the closure strip region. If the upper closing strip edge runs along the corresponding line, or even a little above it, then it is ensured that the fold edges a and b at least will be in abutment. It can also be seen from FIG. 7 that the line of the upper edges of the triangles 15 and 16 are of approximately equal length.

It is further seen in FIG. 7 that the fold edges between the triangles 11, 16 and the remaining similar triangles are of no significance with respect to the folding of the closure strips. These fold edges can therefore be broken without stresses occurring in the closing strip which is illustrated in dotted lines in FIG. 1. Theoretically the fold edges, when correctly positioned correspond to the dotted lines whereby the position of the lower edge of the closing strip is correspondingly indicated. The difficulties which would result from this have already been pointed out.

The base of the folded container is closed by the method illustrated in FIGS. 10 to l2. The bottom is of course preferably formed first.

FIG. 8 illustrates one manner in which the closure parts of the container may be disposed prior to filling. This disposition results in the provision of a rectangular opening provided in the upper region of the container this upper region, as can be seen, being somewhat conical in shape. The pairs of folding

triangles

16, 17 and 20, 21 are folded together if desired, between folding jaws and may at this stage be welded.

After filling the container is closed, again using if necessary the folding jaws which in this case are closed around the container top and the container becomes finally closed in a single manner.

A modification of the above detailed procedure is illustrated in FIG. 9, in this arrangement, again using the folding jaws,

Athe folding triangles

15 and 22, and 18 and 19 respectively are placed on the

surfaces

9 and 10. The comparatively small rectangular opening which thereby results is simply closed after filling again using the fold ing jaws. The folding triangles 15, 18, 19 and 22 which were originally against the jaws are moved away and the folding jaws are then located against the

parts

9 and 10 so that these latter can finally be moved towards one another for effecting the closing operation.

The finished container illustrated in FIG. 13 has a pleasing appearance and due to its substantially hexagonal cross section can in the filled condition be transported and stored in a space saving manner.

If desired circular iiaps or openings for drinking straws or the like may be provided in the container. Such openings are conveniently located in either one or both of the surfaces 9 and 1d on the slopes which lie between those of rz, b of FIG. 7. Pre-broken openings may be covered by extensions bent over on the

surfaces

9 and 10,A

or the tlap or `laps 9 and l0 may be perforated to ensure easy opening by nger pressure within the boundary of the perforations.

lf for the manufacture of the container a blank material is used which is provided with a thermoplastic coating on one side, namely the side lying later on the inside, then all closures can be made simply by heat sealing without special adhesive deposit.

l claim:

l. In a process for making a container having six sides, the steps of preparing a substantially rectangular blank having two pairs of opposite elo-ngated edge portions; creasing said blank in a predetermined direction along tive lines substantially parallel to the direction of elongation of one of said pairs of edge portions of said blank so as to form six elongated iiat panels in said blank each bounded by respective parts of the other pair of edge portions and by two panel-dening straight lines substantially parallel to said direction of elongation; securing the members of said one pair of edge portions to one another so as to form a six-sided tubular body; creasing each one of four of. said panels in a direction contrary to said predetermined direction along two crease lines, said crease lines starting from a point on one member of said other pair of edge portions of said blank intermediate said panel-delining lines ot said one panel, and extending therefrom to respective ones of said panel-defining lines at points spaced from said one member so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion comprising a quadrangular section and a substantially triangular section having a corner pointed at and located on said one member, and two triangular edge sections having ree outer portions respectively, said four panels being so selected that each panel has a tirst panel-defining line in common with another one of said tour panels, and has a second panel-defining line in common with one of the remaining two panels; folding a portion of said tubular body adjacent said one member along said panel-delining lines and said crease lines in the direction of creasing or said lines until the outer portions of the triangular edge sections of two adjacent ones of said panels are superimposed; and securing the superimposed outer portions to each other.

2. in a process for making a container having six sides, the steps of preparing a substantially rectangular blank having two pairs of opposite elongated edge portions; creasing said blank in a predetermined direction along tive lines substantially parallel to the direction or elongation of one of said pairs of edge portions of said blank so as to form six elongated flat panels in said blank each bounded by respective parts of the other pair of edge portions and by two panel-defining straight lines substantially parallel to said direction of elongation, four of sm'd panels being of substantially equal width between said paneldefining lines; securing the members of said one pair of edge portions to one another so as to form a six-sided tubular body; creasing each one of said four panels in a direction contrary to said predetermined direction along two crease lines, said crease lines starting from a point on one member of said other pair of edge portions of said blank intermediate said panel-defining lines of said one panel, and extending therefrom to respective ones of said panel-defining lines at points spaced from said one member so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncrcased portion comprising a quadrangular section and a substantially triangular section having a corner pointed at and located on said one member, and two triangular edge sections having free outer portions respectively, said four panels 1being so selected that each panel has a first panel-defining line in common with another one of said four panels, and has a second paneldetining line in common with one of the remaining two panels; folding a portion of said tubular body adjalli cent said one member along said panel-deiining lines and said crease lines in the direction ot creasing of said lines until the outer portions of 'the triangular edge sections of the outer portions of two adjacent ones of said panels are superimposed; and adhesively securing the superimposed parts to each other.

3. In a process for making a container having six sides, the steps of preparing a substantially rectangular blank having two pairs of opposite elongated edge portions; creasing said blank in a predetermined direction along tive lines substantially parallel to the direction of elongation ot one of said pairs of edge portions of said blank so as to form six elongated llat panels in said blank each bounded by respective parts of the other pair of edge portions and by two-panel deiining straight lines substantially parallel to said direction of elongation, said panels having substantially equal widths between said paneldefining lines; securing the members of said one pair of edge portions to one another so as to form a six-sided tubular body; creasing each one of four of said panels in a direction contrary to said predetermined direction along two crease lines, said crease lines starting from a point on one member of said other pair of edge portions of said blank intermediate said panel-delining lines of said one panel, and extending therefrom to respective ones of said panel-defining lines at points spaced from said one member so as to leave a longitudinal portion of said panel uncreased; whereby said crease lines divide each of said four panels into an uncreased portion comprising a quadrangular section and a substantially triangular section having a corner pointed at and located on said one member, and two triangular edge sections the outer portions of, said four panels being so selected that each panel `has a iirst panel-dening line in common with another one of said four panels, and has a second panel-defining line in common with one of the remaining two panels; folding a portion of said tubular body adjacent said one member along said panel-defining lines and said crease lines in the direction of creasing of said lines until the triangular edge sections of any two adjacent ones of said panels are superimposed; and adhesively securing the superimposed outer portions to each other.

4. ln a process for making a container having six sides, the steps of preparing a substantially rectangular blank having two pairs of opposite elongated edge portions; creasing said blank in a predetermined direction along live lines substantially parallel to the direction of elongation of one of said pairs of edge portions o said blank so as to form six elongated panels in said blank each bounded by respective parts of the other pair of edge portions and by two panel-detining straight lines substantially parallel to said direction of elongation; securing the members of said one pair of edge portions to one another so as to form a six-sided tubular body; creasing each one of four of said panels in a direction contrary to said predetermined direction along two crease lines, said crease lines starting from a point on one member of said other pair of edge portions of said blank intermediate said panel-denning lines of said one panel, and extending therefrom to respective ones of said paneldeilning lines at points equally spaced from said one member so as to leave a longitudinal portion of said panel uncreased; whereby said crease lines divide each of said four panels into an uncreased portion comprising a quadrangular section and a substantially triangular section having a corner pointed at and located on said one member, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a first panel-defining line in common with another one of said tour panels, and has a second panel-defining line in common with one of the remaining two panels; folding a portion of said tubular body adjacent said one member along said panel-defining lines and said crease lines in the direction of creasing of said lines until the outer por-tion of the triangular edge sections of any two adjacent ones of said panels are superimposed; and adhesively securing the superimposed outer portions to each other.

5. In a process for making a container having six sides, the steps of preparing a substantially rectangular blank having two pairs of opposite elongated edge portions; creasing said blank in a predetermined direction along five lines substantially parallel to the direction of elongation of one of said pairs of edge portions of said blank so as to form siX elongated flat panels in said blank each bounded by respective parts of the other pair of edge portions and by two panel-defining straight lines substantially parallel to said direction of elongation; securing the members of said one pair of edge portions to one another so as to form a six-sided tubular body; creasing each one of four of said panels in a direction contrary to said predetermined direction along two crease lines, said crease lines starting from a point on one member of said other pair of edge portions of said blank intermediate said panel-defining lines of said one panel, and extending therefrom to respective ones of said panel-defining lines at points spaced from said one member so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion comprising a quadrangular section and a substantially triangular section having a corner pointed at and located on said one member, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a first panel-deiining line in common with another one of said four panels, and a second panel-defining line in common with one of the remaining two panels, said starting point of said crease lines on said one member being spaced farther from said second panel-defining line than said first panel-deiining ine; folding a portion of said tubular body adjacent said one member along said panel-defining lines and said crease lines in the direction of creasing of said lines until the outer portions of the triangular edge sections of any two adjacent ones of said panels are superimposed; and adhesively securing the superimposed outer portions to each other.

6. In a process for making a container having six sides, the steps of preparing a substantially rectangular blank having two pair of opposite elongated edge portions; creasing said blank in a predetermined direction along live lines substantially parallel to the direction of elongation of one of said pairs of edge portions of said blank so as to form six elongated flat panels in said blank each bounded by respective parts of the other pair of edge portions and by two panel-defining straight lines substantially parallel to said direction of elongation; securing the members of said one pair of edge portions to one another so as to form a six-sided tubular body; creasing each one of four of said panels in a direction contrary to said predetermined direction along two crease lines, said crease lines starting from a point on one member of said other pair of edge portions of said blank intermediate said panel-defining lines of said one panel, and extending therefrom to respective ones of said panel-defining lines at points spaced from said one member so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion comprising a quadrangular section and a substantially triangular section having a corner pointed at and located on said one member, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a first panel-defining line in common with another one of said four panels, and a second panel-dening line in common with one of the remaining two panels, whereby two pairs of contiguously adjacent ones of said panels are separated by one of said remaining panels; folding a portion of said tubular body adjacent said one member along said paneldefining lines and said crease lines in the direction of creasing of said lines until the outer portions of the triangular edge sections of any two adjacent ones of each of said pairs of said panels are superimposed; and adhesively securing the superimposed outer portions to each other.

7. In a process for making a container having six sides, the steps of preparing a substantially rectangular blank having two pairs of opposite elongated edge portions; creasing said blank in a predetermined direction along five lines substantially parallel to the direction of elongation of one of said pairs of edge portions of said blank so as to form six elongated flat panels in said blank each bounded by respective parts of the other pair of edge portions and by two panel-defining straight lines substantially parallel to said direction of elongation; securing the members of said one pair of edge portions to one another so as to form a six-sided tubular body; creasing one of four of said panels in a direction contrary to said predetermined direction along two crease lines, said crease lines starting from a point on one member of said other pair of edge portions of said blank intermediate said panel-defining lines of said one panel, and extending therefrom to respective ones of said panel-defining lines at points spaced from said one member so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion comprising a quadrangular section and a substantially triangular section having a corner pointed at and located on said one member, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a first panel-defining line in common with another one of said four panels, and has a second panel-defining line in common with one of the remaining two panels, whereby two pairs of contiguously adjacent ones of said panels are separated by one of said remaining panels; folding a portion of said tubular body adjacent said one member along said panel-defining lines and said crease lines in the direction of creasing of said lines until the outer portions of the triangular edge sections of two adjacent ones of each of said pairs of said panels are superimposed upon each other and upon corresponding parts of said remaining two panels; and adhesively securing the superimposed outer portions and parts to each other so as to close one end of said tubular body.

8. A folding container having six sides, comprising, a tubular six-sided body including six elongated panels each foldably connected to two contiguously adjacent ones along two respective substantially parallel panel-defining lines and having an elongated free edge portion at one end of said body, the direction of elongation of said edge portion being substantially perpendicular to said lines, each of four of said panels being creased inward of said body along two crease lines, said crease lines starting from a point of said elongated free edge portion of said panel intermediate said panel defining lines, and extending therefrom to respective ones of Said panel-defining lines at points spaced from said free edge portion so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion including a quadrangular section and a substantially triangular section having a corner located in said elongated free edge portion, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a first panel-dening line in common with another one of said four panels, and has a second paneldefining line in common with one of the remaining two panels, said tubular body being folded along said paneldefining lines and said crease lines in such a manner that the outer portions of the triangular edge sections of two adjacent ones of said panels are superimposed, said superimposed outer portions being adhesively secured to each other.

9. A folding container having six sides, comprising, a tubular six-sided body including six elongated panels each foldably connected in angular relationship to two contiguously adjacent ones along two respective substantially parallel panel-defining lines and having an elongated free edge portion at one end of said body, the direction of elongation of said edge portion being substantially perpendicular to said lines, each of four of said panels being creased inward of said body along two crease lines, said crease lines starting from a point of said elongated free edge portion of said panel intermediate said paneldening lines, and extending therefrom to respective ones of said panel-defining lines at points spaced from said free edge portion so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion including a quadrangular section and a substantially triangular section having a corner located in said elongated free edge portion, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a iirst panel-defining line in common with another one of said four panels, and has a second panel-defining line in common with one of the remaining two panels, said tubular body being folded along said panel-defining lines and said crease lines in such a manner that the outer portions of the triangular edge sections of any two adjacent ones of said panels are superimposed, said superimposed outer portions being adhesively secured to each other.

l0. A folding container having six sides, comprising, a tubular six-sided body including six elongated panels each foldably connected to two contiguously adjacent iones along two respective substantially parallel paneldening lines and having an elongated free edge portion at one end of said body, the direction of elongation of said edge portion being substantially perpendicular to said lines, each of four of said panels being of substantially equal width between said panel-defining lines and being creased inward of said body along two crease lines, said crease lines starting from a point of said elongated free edge portion of said panel intermediate said paneldefining lines, and extending therefrom to respective ones of said panel-defining lines at points spaced from said free edge portion so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion including a quadrangular section and a substantially triangular section having a corner located in Said elongated free edge portion, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a first paneldefining line in cornrnon with another one of said four panels, and has a second panel-defining line in common with one of the remaining two panels, said tubular body being folded along said panel-delining lines and said crease lines in such a manner -that the outer portions of the triangular edge sections of any two adjacent ones of said panels are superimposed, said superimposed outer portions being adhesively secured to each other.

ll. A folding container having six sides, comprising, a tubular six-Sided body including six elongated panels of substantially equal width each foldably connected to two contiguously adjacent ones along two respective substantially parallel panel-defining lines and having an elongated free edge portion at one end of said body, the ldirection of elongation of said edge portion being substantially perpendicular to said lines, each of four of said panels being creased inward of said body along two crease lines, said crease lines starting from a point of said elongated free edge portion of said panel intermediate said paneldefining lines, and extending therefrom to respective ones of said panel-defining lines at points spaced from free edge portion so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion including a quadrangular section and a substantially triangular section having a corner located in said elongated free edge portion, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a rst panel-defining line in common with another one of said four panels, and has a second panel-dening line in common with one of the remaining two panels, said tubular body being folded along said panel-defining lines and said crease lines in such a manner that the outer portions of the triangular edge sections of any two adjacent ones of said panels are superimposed, said superiinposed outer portions being adhesively secured to each other.

l2. A folding container having six sides, comprising, a tubular six-sided body including six elongated panels each oldably connected to two contiguously adjacent ones along two respective substantially parallel panel-defining lines and having an elongated free edge portion at one end of said body, the direction of elongation of said edge portion being substantially perpendicular to said lines, each of four of said panels being creased inward of said body along two crease lines, said crease lines starting from a point of said elongated free edge portion of said panel intermediate said panel-dening lines, and extending therefrom to respective ones of said panel-defining lines at points equally spaced from said free edge portion so as to leave a longitudinal portion of said panel uncrea-sed, whereby said crease lines divide each of said four panels into an uncreased portion including a quadrangular section and a substantially triangular section having a corner located in said elongated free edge portion, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has la rst panel-dening line in common with another one of said four panels, and has a second paneldefining line in common with one of the remaining two panels, said tubular body being folded along said paneldefining lines and said crease lines in such a manner that the outerportions of the triangular edge sections of any two adjacent ones of said panels are superimposed, said superimposed outer portions being adhesively secured to each other.

13. A folding container having six sides, comprising, a tubular six-sided body including six elongated panels each foldably connected to two contiguously adjacent ones along two respective substantially parallel panel-defining lines and having an elongated free edge portion at one end of said body, the direction of elongation of said edge portion being substantially perpendicular to said lines, each of four of said panels being creased inward of said body along two crease lines, said crease lines starting from a point of said elongated free edge portion of said panel intermediate said panel-defining lines, and extending therefrom to respective ones of said panel-defining lines at points spaced from said free edge portion so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion including a quadrangular section and a substantially triangular section having a corner located in said elongated free edge portion, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a iirst panel-defining line in common with another one of said four panels, and has a second panel-defining line in common with one of the remaining two panels, said starting point of said crease lines in said free edge portions being spaced farther from said second panel-defining line than said first panel-delining line, said tubular body being folded along said panel-defining lines and said crease lines in such a manner that the outer portions of the triangular edge sections of any two adjacent ones of said panels are superimposed, said superimposed outer portions being adhesively secured to each other,

14. A folding container having six sides, comprising, a tubular six-sided body including six elongated panels each foldably connected to two contiguously adjacent ones along two respective substantially parallel panel-dening lines and having an elongated free edge portion at one end of said body, the direction of elongation of said edge portion being substantially perpendicular to said lines, each of four of said panels being creased inward of said body along two crease lines, said crease lines starting from a point of said elongated free edge portion of said panel intermediate said panel-defining lines, and extending therefrom to respective ones of panel-dening lines at points spaced from said free edge portion so as to leave a longitudinal portion of said panel uncreased, whereby said crease lines divide each of said four panels into an uncreased portion including a quadrangular section and a substantially triangular section having a corner located in said elongated free edge portion, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a rst panel-defining line in common with another one of said four panels, and has a second panel-defining line in cornmon with one of the remaining two panels, whereby two pairs of contiguously adjacent ones of said panels are separated by one of said remaining panels, said tubular body being folded along said panel-defining lines and said crease lines in such a manner that the outer portions of the triangular edge sections of any two adjacent ones of each of said pairs of said panels are superimposed, said superimposed outer portions being adhesively secured to each other.

15. A folding container having six sides, comprising, a tubular six-sided body including six elongated panels each foldably connected to two contiguously adjacent ones along two respective substantially parallel paneldefining lines and having an elongated free edge portion at one end of said body, the direction of elongation of said edge portion being substantially perpendicular to said lines, each of four of said panels being creased inward of said body along two crease lines, said crease lines starting from a point of said elongated free edge portion of said panel intermediate said panel-delining lines, and extending therefrom to respective ones of said panel-dening lines at points spaced from said free edge portion so as to leave a longitudinal portion of said panel uncreased, whereby said `crease `lines divide each of said four panels into an uncreased portion including a quadrangular section and a substantially triangular section having a corner located in said elongated free edge portion, and two triangular edge sections having free outer portions, respectively, said four panels being so selected that each panel has a trst panel-defining line in common with another one of said four panels, and has a second paneldelining line in common with one of the remaining two panels, said tubular body being folded along said panel defining lines and said crease lines in such a manner that the outer portions of the triangular edge sections of any two adjacent ones of said panels are superimposed upon each other and upon corresponding parts of said remaining two panels, said superimposed parts and outer portions being adhesively secured to each other so as to close one end of said tubular body.

References Cited in the le of this patent UNITED STATES PATENTS 1,291,974 McNeil Jan. 21, 1919 1,511,043 Sullivan Oct. 7, 1924 2,044,103 Rossi June 16, 1936 2,047,804 Shapiro July 14, 1936 2,189,431 Moore Feb. 6, 1940 2,670,127 Gleason et al. Feb. 23, 1954 FOREIGN PATENTS 6,804 Great Britain 1899 469,937 Great Britain Aug. 3, 1937

Claims

15. A FOLDING CONTAINER HAVING SIX SIDES, COMPRISING, A TUBULAR SIX-SIDED BODY INCLUDING SIX ELONGATED PANELS EACH FOLDABLY CONNECTED TO TWO CONTIGUOUSLY ADJACENT ONES ALONG TWO RESPECTIVE SUBSTANTIALLY PARALLEL PANELDEFINING LINES AND HAVING AN ELONGATED FREE EDGE PORTION AT ONE END OF SAID BODY, THE DIRECTION OF ELONGATION OF SAID EDGE PORTION BEING SUBSTANTIALLY PERPENDICULAR TO SAID LINES, EACH OF FOUR OF SAID PANELS BEING CREASED INWARD OF SAID BODY ALONG TWO CREASE LINES, SAID CREASE LINES STARTING FROM A POINT OF SAID ELONGATED FREE EDGE PORTION OF SAID PANEL INTERMEDIATE SAID PANEL-DEFINING LINES, AND EXTENDING THEREFROM TO RESPECTIVE ONES OF SAID PANEL-DEFINING LINES AT POINTS SPACED FROM SAID FREE EDGE PORTION SO AS TO LEAVE A LONGITUDINAL PORTION OF SAID PANEL UNCREASED, WHEREBY SAID CREASE LINES DEVIDE EACH OF SAID FOUR PANELS INTO AN UNCREASED PORTION INCLUDING A QUADRANGULAR SECTION AND A SUBSTANTIALLY TRIANGULAR SECTION HAVING A CORNER LOCATED IN SAID ELONGATED FREE EDGE PORTION, AND TWO TRIANGULAR EDGE SECTIONS HAVING FREE OUTER PORTIONS, RESPECTIVELY, SAID FOUR PANELS BEING SO SELECTED THAT EACH PANEL HAS A FIRST PANEL-DEFINING LINE IN COMMON WITH ANOTHER ONE OF SAID FOUR PANELS, AND HAS A SECOND PANELDEFINING LINE IN COMMON WITH ONE OF THE REMAINING TWO PANELS, SAID TUBULAR BODY BEING FOLDED ALONG SAID PANELDEFINING LINES AND SAID CREASE LINES IN SUCH A MANNER THAT THE OUTER PORTIONS OF THE TRIANGULAR EDGE SECTIONS OF ANY TWO ADJACENT ONES OF SAID PANELS ARE SUPERIMPOSED UPON EACH OTHER AND UPON CORRESPONDING PARTS OF SAID REMAINING TWO PANELS, SAID SUPERIMPOSED PARTS AND OUTER PORTIONS BEING ADHESIVELY SECURED TO EACH OTHER SO AS TO CLOSE ONE END OF SAID TUBULAR BODY.