[0001] The present invention relates to a collapsible box-shaped container provided with
a bottom and with two pairs of opposed upright side walls which are folded approximately
square to the bottom, wherein the two opposed side walls of a first pair are each
at both ends provided with a lengthening flap which is folded approximately square
to the side wall, said lengthening flap being fastened with a portion of its outer
surface to a corresponding part of the inner surface of an adjacent side wall of the
other pair, and wherein in said adjacent side wall each time from both bottom corner
points a first diagonal folding line is provided extending upwardly at an acute angle,
in such a way, that the portion of said other side wall fastened on the lengthening
flap, is at the side of the first diagonal folding line turned away from the bottom.
[0002] Such a collapsible box-shaped container is known to applicant from his own knowledge
and is used in practice at a large scale. In order to give said collapsible box enough
strength in its erected or unfolded state, i.e. such that the erected box can resist
the load of stacked filled boxes, this known box is provided with a double wall. Besides,
each lengthening flap is provided with a slip lip at the underside, i.e. at the side
of the bottom, adjacent its free edge, the purpose of which is that the box remains
erected. Without said slip lips the box has the tendency to partially collapse as
a result of tensions in the material. These known slip lips have the disadvantage
that they exercise merely a relatively small resistance to inwardly folding of the
side walls of the box, because when erecting the box they are bent with a small radius
of curvature, and moreover buckle easily along their connection line with the lenthening
flap.
[0003] Although the form stiffness of such an erected box is indeed better than with a box
with single side walls, and the allowable load of the box-shaped container when stacking
filled boxes is indeed greater, these improvements are obtained at the expense of
a great material consumption.
[0004] The invention aims at the realization of these boxes having the same packing function
and in which the qualitities for unfolding the box in a good manageable open position,
wherein the side walls of the box are perpendicular to the bottom, are improved.
[0005] This purpose is attained in that according to the invention each lengthening flap
is provided with a connection flap which is double-folded on the lengthening flap
and has substantially the same length as the lengthening flap, and with a fastening
flap which is folded at an angle of approximately 90° with respect to the lengthening
flap and is glued onto the side wall of the first pair provided with the lengthening
flap.
[0006] By applying these measures, with the same load bearing capacity material savings
are obtained, which may rise to about 30% of the total packing unit, because single
side walls can be used. Also the form stiffnes of the collapsible box-shaped container
according to the invention in the erected or unfolded condition is better than that
of the known collapsible box-shaped container.
[0007] With a preferred embodiment of the collapsible box-shaped container according to
the invention each lengthening flap and connection flap adjacent the folding line
therebetween have been widened over a portion of the length of the flaps in the direction
of the bottom, in such a way, that a double slip lip is formed, the height of the
double slip lip being greater than the distance between the bottom edge of the lengthening
flap and connection flap, respectively, and the folding line between the bottom and
the side wall of the other pair.
[0008] Because the height of the double slip lip is greater than the distance between the
bottom edge of the lengthening flap and connection flap, respectively, and the folding
line between the bottom and the side wall of the other pair, the double slip lip pushes
with some force onto the bottom of the box when unfolding the box and when it is erected,
as a result of which the side walls of the other pair, and therewith also the side
walls of the one pair can be kept with certainty in a position perpendicular to the
bottom, and thereby moreover friction forces become active between the underside of
the double slip lip and the upper surface of the bottom, which prevent the double
slip lip from slipping away inwardly over the bottom of the box.
[0009] With a particularly efficient embodiment of the collapsible box-shaped container
according to the invention each lengthening flap adjacent the folding line between
lengthening flap and connection flap is heightened over a portion of the length of
the lengthening flap in the direction of the bottom, in such a way, that a single
slip lip is formed, wherein the folding line between lengthening flap and connection
flap over a portion of the height of the flaps is replaced by a cut, and wherein the
height of the single slip lip is greater than the distance between the bottom edge
of the lengthening flap and the folding line between the bottom and side wall of the
other pair.
[0010] By using this single slip lip, said lip is bent with a relatively great radius of
curvature when unfolding the box, so that a relatively great force is exercised on
the bottom of the box and thereby the resistance of the side walls of the box against
folding inwardly is increased considerably with respect to the resistance of the known
box. By the greater length of the present slip lip compared to that of the slip lip
of the known box further the danger for buckling of the slip lip is much smaller.
[0011] The present invention also relates to a one-piece blank for manufacturing a box-shaped
container according to claim 1, comprising a bottom panel and four side wall panels
which are foldably connected with the bottom panel, wherein the one pair of opposed
side wall panels are each provided with two opposed lengthening flaps which are foldably
connected with the side wall panel, and wherein in the other pair of opposed side
wall panels each time from the corner points of the bottom panel a substantially diagonal
folding line is provided.
[0012] The blank for manufacturing the above-described collapsible box-shaped container,
which is known to applicant from his own knowledge, comprises at least one pair of
opposed side wall panels with widening strips, which along a folding line parallel
to the folding line between bottom panel and side wall panel, are foldably connected
with the side wall panel, and which have substantially the same length and width as
the side wall panels. This means a relatively great material consumption.
[0013] The blank for manufacturing a box-shaped container according to the invention is
characterized in that each lengthening flap is provided with a connection flap with
a first folding line between lengthening flap and connection flap, said flaps having
substantially the same length and in that a fastening flap is connected to the connection
flap, which fastening flap is connected to the connection flap by a second folding
line.
[0014] By using the blank according to the invention a considerable amount of material can
be saved by comparison with the known blank.
[0015] With a preferred embodiment of the blank according to the invention each lengthening
flap and connection flap adjacent the folding line therebetween are widened over a
portion of the length of the flaps at the side of a side wall panel of the other pair,
in such a way, that an extending double slip lip is formed and said folding line extends
through the slip lip, and the edge of said side wall panel opposite the double slip
lip being set back with respect to the imaginary extension of the folding line between
the bottom panel and the side wall panel of the one pair, wherein the double slip
lip extends in the direction of the side wall panel of the other pair beyond the imaginary
extension of the folding line.
[0016] By introducing only small modifications into the above-described blank, a blank can
be obtained for manufacturing a collapsible box-shaped container according to the
invention, which has a great form stiffness and load bearing capacity while using
a relatively small amount of material.
[0017] The invention will be further illustrated by a few embodiments on the basis of the
drawing.
Fig.1 is a top view of a corner of a blank according to the invention for manufacturing
a collapsible box-shaped container,
fig.2 is a perspective view of one corner of a collapsible box-shaped container according
to the invention, which is manufactured from the blank according to fig.1,
fig.3 is a top view of one corner of another embodiment of the blank according to
the invention for manufacturing a collapsible box-shaped container,
fig.4 is a perspective view of one corner of a collapsible box-shaped container according
to the invention, which is manufactured from the blank according to fig.3,
fig.5 is a top view of one corner of another embodiment of the blank according to
the invention for manufacturing a collapsible box-shaped container,
fig.6 is a perspective view of one corner of a collapsible box-shaped container according
to the invention, which is manufactured from the blank according to fig.5, and
fig.7 illustrates a detail D of fig.5 with a different setting of the single slip
lip.
[0018] Fig.1 illustrates a corner portion of a blank P1 according to the invention for manufacturing
a collapsible box-shaped container, hereinafter simply called box, according to the
invention, a corner portion of which being drawn in fig.2. The blank P1 consists of
one piece and comprises a bottom panel 2 and two pairs of side wall panels 3 and 4
respectively, which are foldably connected with the bottom panel 2 along folding lines
5 and 6 respectively. The one pair of side wall panels 3 is each provided with two
opposed lengthening flaps 7 which are connected with the side wall panel 3 along a
folding line 8. In the other pair of side wall panels 4 each time from the bottom
corner points B1 a substantially diagonal folding line 9 is provided, the function
of which is yet to be described.
[0019] According to the invention each lengthening flap 7 is provided with a connection
flap 10 with a first folding line 11 between lengthening flap and connection flap.
The lengthening flap 7 and the connection flap 10 have substantially the same length
L1. Each connection flap 10 is provided with a fastening flap 12 connected to the
connection flap by a second folding line 13. Further, each lengthening flap 7 has
a surface 7a (interrupted shading) at its side turned away from the reader, to which
surface glue is applied for manufacturing the box D1, and each fastening flap 12 has
a glued surface 12a (uninterrupted shading) at its side turned towards the reader.
[0020] Upon erecting the box D1 each lengthening flap 7 is glued with the surface 7a to
a portion 4a of each side wall panel 4, and each fastening flap is glued with the
surface 12a to the side wall panel 3, in such a way, that the folding lines 8 and
13 practically coincide.
[0021] The box D1 is now in the form as is drawn in fig.2. In order to collapse the box
D1 the side walls 4, 4a adjacent the folding lines 9 are folded inwardly, and the
side walls 4 are folded inwardly about the folding lines 6 over an angle of ± 90°
to the bottom, during which folding movement the side wall portions 4a and the lengthening
flaps 7 and connection flaps 10 forming a whole therewith, are folded about the folding
line 9 approximately flat to the side walls 4 and about the folding lines 13 approximately
flat to the side walls 3, the latter in their turn are folded inwardly about the folding
lines 5 over ± 90° towards the bottom 2.
[0022] When erecting said box from its folded position one simply pulls the side walls 3
simultaneously upwards over ± 90° with respect to the bottom 2, wherein the parts
of the box D1 move back again into the position according to fig.2, and the bottom
edges 7b and 10b of the lengthening flaps 7 and connection flaps 10 press against
the bottom 2 and thereby keep the box D1 substantially in the position according to
fig.2 by frictional resistance.
[0023] As the lengthening flap 10 and fastening flap 12, which is also glued to the side
wall of the one pair, are folded into the corners of the box D1, said box D1 obtains
a high load bearing capacity, i.e. een very favourable relation between the used cardboard
or other material suitable for boxes and the load bearing capacity of the stacked
boxes.
[0024] Fig.3 illustrates a corner portion of a blank P2 for manufacturing a collapsible
box D2 according to the invention, a corner portion of which is drawn in fig.4. The
blank P2 consists of one piece and comprises a bottom panel 14, two pairs of side
wall panels 15 and 16 respectively which are foldably connected with the bottom panel
14 along folding lines 17 and 18, respectively. The one pair of side wall panels 15
are each provided with two opposed lengthening flaps 19 which are connected with the
side wall panels 15 along a folding line 20.
[0025] Furthermore, as is also the case with the embodiment according to fig.1, each lengthening
flap 19 is provided with a connection flap 21 with a first folding line 22 between
lengthening flap and connection flap. The lengthening flaps 19 and connection flaps
21 substantially have the same length L2. Each connection flap 21 is provided with
a fastening flap 23 which is connected to the connection flap by a second folding
line 24. Each fastening flap 23 has also an extending lip 23b. Further each lengthening
flap 19 has a surface 19a with interrupted shading at the side turned away from the
reader, on which surface glue is applied for manufacturing the box D2, and each fastening
flap 23 has a glued surface 23a with continuous shading at the side directed towards
the reader.
[0026] In each side wall panel 15 of the one pair and in the bottom panel 14 a substantially
rectangular recess 25 is provided adjacent to the folding line 17 and at a short distance
of the bottom corner points B2. Further each side wall panel 15 of the one pair is
provided with a widening strip 26 connected with the panel 15 by a folding line 27,
each widening strip 26 adjacent to the folding line 27 and directly opposite the recess
25 in the side wall panel 15 being provided with a U-shaped cut 28 limiting a lip
29. The function of the lips 23b, recesses 25 and lips 29 will yet be explained further.
[0027] In the widening strip 26 from each end point V2 of the folding line 27 a second substantially
diagonal folding line 30 is provided, while each widening strip 26 at both ends is
provided with a retaining flap 31 connected with the widening strip 26 by a folding
line 32. Each retaining flap 31 is provided with a glued surface 31a at the side turned
away from the reader. The function of the widening strip 26 and retaining flap 31
will be discussed hereinafter. Also with the blank P2 each side wall panel 16 of the
other pair is provided with a first substantially diagonal folding line 33 from each
bottom corner point B2.
[0028] According to the invention each lengthening flap 19 and each connection flap 21 adjacent
the folding line 22 therebetween is widened over a portion of the length L2 of the
flaps at the side of the side wall panel 16 of the other pair, in such a way, that
an extending double slip lip 34 is formed and the folding line 22 extends through
the slip lip 34, and the edge 35 of the side wall panel 16 opposite the double slip
lip 34 is set back with respect to the imaginary extension 17a of the folding line
17 between the bottom panel 14 and the side wall panel 15 of the one pair, wherein
the double slip lip 34 in the direction of the side wall panel 16 of the other pair
extends beyond the imaginary extension 17a of the folding line 17.
[0029] When erecting the box D2 according to fig.4 each retaining flap 31 is glued with
the surface 31a to the panel portion 16a, each lengthening flap 19 is glued with the
surface 19a to the retaining flap 31 and to the panel portion 16a, and each fastening
flap 23 is glued with the surface 23a to the side wall panel 15, in such a way, that
the folding lines 20 and 24 substantially coincide. Each retaining flap 31 may also
be glued between the lengthening flap 19 and the connection flap 21 or to the free
surface of the connection flap 21 at the inside of the box D2.
[0030] In the erected position of the box D2 according to fig.4 the squarely folded widening
strips 26 at the side walls 15 of the one pair function as additional supporting means
when stacking filled boxes D2. In this position of the box D2 the double slip lips
34 press the bottom 14 as it were a bit downwards adjacent the slip lips and have
the slip lips in this way a fixed position that warrants that the side walls of the
box remain upright and perpendicularly to the bottom 14 of the box, also when the
box D2 is filled.
[0031] As the double slip lips 34 press onto the bottom 14 with a relatively great force,
a relatively high frictional resistance has to be overcome to have the box D2 loose
its erected shape with the side walls 15 and 16 substantially perpendicular to the
bottom. The great strength of the corners as a result of the connection flaps 21 and
fastening flaps 23 being folded into the corners, said flaps being additionally glued
to the side walls 15, the resultant great load bearing capacity of the box D2 and
the great form stability are obtained with a relatively low material consumption.
[0032] The great form stability of the erected box D2, however, also means that erecting
the box from the folded down position, wherein first the side walls 16 of the other
pair are folded on the bottom 14, and then the side walls 15 of the one pair are folded
on the bottom, is somewhat more time-consuming than with the box D1 according to fig.2.
For, after pulling up the side walls 15 of the one pair the composed wall portions
16a, 19-21 with the slip lips 34 must still be pressed in the position perpendicular
to the bottom 14, during which the "dragging" friction between the double slip lip
34 and the bottom 14 has to be overcome. However, this relatively insignificant disadvantage
counts for little compared to the above-mentioned advantages of the box D2 with respect
to the known box.
[0033] Fig.5 illustrates a corner portion of a blank P3 for manufacturing a collapsible
box D3 according to the invention, a corner portion of which being drawn in fig.6.
The blank P3 also consists of one piece and comprises a bottom panel 37 and two pairs
of side wall panels 38 and 39 which are foldably connected with the bottom panel 37
along folding lines 40 and 41. The one pair of side wall panels 38 are each provided
with two opposed lengthening flaps 42 which are connected with the side wall panels
38 along a folding line 43.
[0034] As is also the case with the embodiments according to fig.1 and fig.3 respectively,
there is further provided a connection flap 44 to each lengthening flap 42 along a
folding line 43a. The lengthening flaps 43 and connection flaps 44 have substantially
the same length L3. Each connection flap 44 is provided with a fastening flap 46 along
a second folding line 45. Each fastening flap 46 has yet an extending lip 46b. Each
lengthening flap 42 has further a glued surface 42a at the side turned away from the
reader, which surface is indicated with an interrupted shading and each fastening
flap 46 has a glued surface 46a with a continuous shading at the side directed towards
the reader.
[0035] In each side wall panel 38 of the one pair and in the bottom panel 37 a substantially
rectangular recess 47 is made adjacent to the folding line 40 at a short distance
from the bottom corner point B3. Furthermore, each side wall panel 38 of the one pair
is provided with a widening strip 48 which is connected with the side wall panel 38
by a folding line 49, wherein in each widening strip 48 a U-shaped cut 50, limiting
a lip 51, is made adjacent the folding line 49 and directly opposite the recess 47
in the side wall panel 38. The function of the lips 46b, the recesses 47 and the lips
51 will yet be further elucidated.
[0036] In the widening strip 48 from each end point V3 of the folding line 49 a second substantially
diagonal folding line 52 is provided, whereas each widening strip 48 at both ends
is provided with a retaining flap 53 which is connected with the widening strip 48
by a folding line 54. Each retaining flap 53 is provided with a glued surface 53a
at the side turned away from the reader. The function of the widening strips 48 and
the retaining flaps 53 will be discussed hereinafter. Also with the blank P3 in each
side wall panel 39 of the other pair from each bottom point B3 a first substantially
diagonal folding line 55 is provided.
[0037] According to the invention each lengthening flap 42 adjacent the folding line 43a
between lengthening flap and connection flap 44 is widened over a portion of the length
L3 of the flaps at the side of the side wall panel 39 of the other pair, in such a
way, that a single slip lip 56 is formed, wherein the folding line 43a between lengthening
flap 42 and connection flap 44 is replaced by a cut 57 over a portion of the width
of the flaps, wherein the width H of the single slip lip 55 is greater than the distance
A3 between the inner edge 42b of the lengthening flap 42 and the imaginary extension
40a of the folding line 40 between bottom panel 37 and side wall 38 of the one pair,
and wherein the edge 39b of the side wall panel 39 of the other pair with respect
to the single slip lip 56 is set back with respect to the imaginary extension 40a
of the folding line 40 between bottom panel 37 and side wall panel 38 of the one pair.
[0038] Upon erecting the box D3 according to fig.6 each retaining flap 53 with the glued
surface 53a is glued to the panel portion 39a, each lengthening flap 42 with the glued
surface 42a is glued to the retaining flap 53 and the panel portion 39a, and each
fastening flap 46 with the glued surface 46a is glued to the side wall panel 38, in
such a way, that the folding lines 43 and 43a substantially coincide. Each retaining
flap 53 may also be glued to the free surface of the connection flap 44 between the
lengthening flap 42 of the box D3.
[0039] Further according to the invention the cut 57 in the blank P3 is made such that the
side edge 56a of the single slip lip 56 turned away from the adjacent bottom corner
point B3, which side edge is formed by a cut, encloses an acute angle α with the folding
line 41 between the bottom 37 and the side wall 39 of the other pair and opening towards
the bottom corner point. This causes the single slip lip 51 to act in an optimal way,
as will be seen hereinafter.
[0040] In the erected position of the box D3 according to fig. 6 the squarely folded widening
strips 48 at the side walls 38 of the one pair function as additional supporting means
when stacking filled boxes D3. In this position of the box D3 the single slip lips
56 press the bottom 37 adjacent the slip lips as it were a bit downwardly, whereas
the slip lips 56 themselves, seen from the inside of the box, are curved slightly
concavely. In this way a relatively high frictional resistance has to be overcome
to bring the box D3 from its position according to fig.6 in its substantially collapsed
position (not drawn). Therefore the box D3 remains in the position according to fig.6
when once brought into said position, in particular during handling and transportation
of the filled boxes.
[0041] The box D3 according to fig.6 also obtains a relatively high strength, load bearing
capacity and form stability with a relatively small material consumption, as has been
further explained above on the basis of the figures 2 and 4.
[0042] Furthermore, erecting the substantially collapsed box D3, wherein first the side
walls 39 of the other pair are folded towards the bottom 37 over ± 90° and then the
side walls 38 of the one pair are folded towards the bottom 37 onto the side walls
39 over ± 90°, goes very easily and rapidly, because only the side walls 38 of the
one pair need to be pulled upwardly from the bottom 37, until they are substantially
perpendicular to the bottom 37, in order to erect the side walls 39 of the other pair
in the position substantially perpendicular to the bottom 37 in one movement with
the side walls 38 of the one pair by means of the tangantial folding line 55 and the
assemblies of flaps 44, 42 and 53, which are glued to the side wall portion 39a, during
which the single slip lips 56 slip over the bottom and adopt in one movement an inwardly
directed somewhat concave shape in the position according to fig.6. Therewith, the
slip lips 56 need not be pressed aditionally and manually towards the side walls 39,
which makes the use of the box D3 easier. The slip lip 56 can be situated as far away
as possible from the corner point B3, because the side edge 56a of the slip lip 56
encloses an acute angle α with the folding line 41, which increases the effect of
the slip lip 56.
[0043] Finally, fig. 7 illustrates a part of a corner portion of a blank P4 which is substantially
equal to the blank P3. The blank P4 consisting of one piece comprises a bottom panel
58 and two pairs of side wall panels 59 and 60, 60a which are foldably connected with
the bottom panel 58 along folding lines 61 and 62. The one pair of side wall panels
59 is each provided with two opposed lengthening flaps 63 which are connected with
the side wall panels 59 along folding lines 64 and which have a glued surface 63a
corresponding to the glued surface 42a of the blank P3.
[0044] Furthermore each lengthening flap 63 is provided with a connection flap 66 along
a folding line 65, and in each side wall panel 60 of the other pair from each bottom
corner point B4 is provided a first substantially diagonal folding line 69 having
the same function as the diagonal folding lines 55, 33 and 9 of the blanks P3, P2
and P1 respectively.
[0045] According to the invention each connection flap 66 adjacent the folding line 65 between
connection flap and lengthening flap 63 is widened over a portion of the length L4
of the flaps at the side of the side wall panel 60 of the other pair, in such a way,
that a single slip lip 70 is formed, wherein the folding line 65 over a portion of
the width of the flaps is replaced by a cut 71 and wherein the width H4 of the single
slip lip 70 is greater than the distance A4 between the inner edge 66a of the connection
flap 66 and the imaginary extension 61a of the folding line 61 between bottom panel
58 and side wall panel 59 of the other pair, and wherein the edge 60b of the side
wall panel 60 of the other pair opposite the single slip lip 70 is set back with respect
to the imaginary extension 61a of the folding line 61 between bottom panel 58 and
side wall panel 59 of the one pair. The cut 71 is further made in the same manner
as the cut in the blank P3.
[0046] Erecting a box from the blank P4 according to fig.7 is done in the same manner as
the box D3 from the blank P3. The single slip lips 70 of such a box show substantially
the same behaviour, perform substantially the same functions and have substantially
the same effect as the single slip lips 56 of the box D3 according to fig.6.
[0047] Also collapsing and erecting of an above-mentioned box is carried out in the same
manner as with the box D3 according to fig.6.
[0048] It is still pointed out that the reinforced corner construction of the box D1 can
be used with the boxes D2, D3 and D4, whereas reversely the single slip lip 65 or
70 or the double slip lip 34 of the box D3 or D4, and of the box D2 respectively,
can also be used with the box D1. Further the reinforced corner construction and the
single or double slip lip according to the invention can be used with each collapsible
box-shaped container which falls within the scope of the enclosed claims.
1. A collapsible box-shaped container provided with a bottom and two pairs of opposed
upright side walls, which are folded approximately square to the bottom, wherein the
two opposed side walls of a first pair are each at both ends provided with a lengthening
flap which is folded approximately square to the side wall, said lengthening flap
being fastened with a part of its outer surface to a corresponding part of the inner
surface of an adjacent side wall of the other pair and wherein in said adjacent side
wall each time from both bottom corner points a first diagonal folding line is provided
extending upwardly at an acute angle, in such a way, that the portion of said other
side wall, which is fastened on the lengthening flap, is situated at the side of the
first diagonal folding line turned away from the bottom,
characterized in that each lengthening flap (7) is provided with a connection flap (10) which is double-folded
on the lengthening flap and has substantially the same length as the lengthening flap,
and with a fastening flap (12) which is folded at an angle of approximately 90° with
respect to the lengthening flap and is glued on the side wall (3) of said first pair
provided with said lengthening flap.
2. A box-shaped container according to claim 1, characterized in that each lengthening flap (19) and the connection flap (21) adjacent the folding line
(22) therebetween have been widened over a portion of the length (L2) of the flaps
in the direction of the bottom (14), in such a way, that a double slip lip (34) is
formed, the height (h) of the double slip lip (34) being greater than the distance
(a) between the bottom edge (19b and 21b respectively) of the lengthening flap and
connection flap, respectively, and the folding line (18) between the bottom (14) and
the side wall (16) of the other pair.
3. A box-shaped container according to claim 1, characterized in that each lengthening flap (42) adjacent the folding line (43a) between lengthening flap
and connection flap (44) is heightened over a portion of the length of the lengthening
flap in the direction of the bottom (37), in such a way, that a single slip lip (56)
is formed, wherein the folding line between lengthening flap and connection flap over
a portion of the height of the flaps is replaced by a cut (57), and wherein the height
(H3) of the single slip lip is greater than the distance (A3) between the bottom edge
(42b) of the lengthening flap and the folding line (41) between bottom (37) and side
wall (39) of the other pair.
4. A box-shaped container according to claim 1, characterized in that each connection flap (66) adjacent the folding line (65) between lengthening flap
(63) and connection flap is heightened over a portion of the length of the connection
flap in the direction of the bottom (58), in such a way, that a single slip lip (70)
is formed, wherein the folding line between lengthening flap and connection flap over
a portion of the height of the flaps is replaced by a cut (71), and wherein the height
(H4) of the single slip lip is greater than the distance (A4) between the bottom edge
(66a) of the connection flap and the folding line (41) between the bottom (37) and
the side wall (39) of the other pair.
5. A box-shaped container according to claim 3 or 4, characterized in that each cut (57; 71) is provided in such a way, that the side edge (56a; 70a) of the
single slip lip (56; 70), which is turned away from the adjacent bottom corner point
(B3; B4) and which side edge is formed by the cut, encloses an acute angle (α), opening
towards the bottom corner point, with the folding line (41; 62) between bottom (37;
58) and side wall (39; 60) of the other pair.
6. A one-piece blank for manufacturing a box-shaped container according to claim 1, comprising
a bottom panel and four side wall panels which are foldably connected with the bottom
panel, wherein of the one pair of opposed side wall panels each panel is provided
with two opposed lengthening flaps which are foldably connected with the side wall
panel, and wherein in the other pair of opposed side wall panels each time from the
corner points of the bottom panel a substantially diagonal folding line is provided,
characterized in that each lengthening flap (7) is provided with a connection flap (10) with a first folding
line (11) between lengthening flap and connection flap, said flaps having substantially
the same length (L1) and that a fastening flap (12) is connected to the connection
flap, which fastening flap is connected to said connection flap by a second folding
line (13).
7. A blank according to claim 6, characterized in that each lengthening flap (19) and each connection flap (21) adjacent the folding line
(22) therebetween are widened over a portion of the length of the flaps at the side
of a side wall panel (16) of the other pair, in such a way, that an extending double
slip lip (34) is formed and the said folding line extends through the slip lip and
that the edge (35) of said side wall panel opposite the double slip lip is set back
with respect to the imaginary extension (17a) of the folding line (17) between the
bottom panel (14) and the side wall panel (15) of the one pair, wherein the double
slip lip (34) in the direction of the side wall panel (16) of the other pair extends
beyond the imaginary extension (17) of the folding line (17).
8. A blank according to claim 6, characterized in that each lengthening flap (42) adjacent the folding line (43a) between lengthening flap
and connection flap (44) is widened over a portion of the length (L3) of the lengthening
flap in the direction of the side wall panel (39) of the other pair, in such a way
that a single slip lip (56) is formed, wherein the folding line between lengthening
flap and connection flap over a portion of the width of the flaps is replaced by a
cut (57), wherein the width (H3) of the single slip lip is greater than the distance
(A3) between the inner edge (42b) of the lengthening flap and the imaginary extension
(40a) of the folding line (40) between bottom panel (37) and side wall panel (38)
of the one pair, and wherein the edge (39b) of the side wall panel of the other pair
opposite the single slip lip is set back with respect to the extension of the folding
line between bottom panel and side wall panel of the one pair.
9. A blank according to claim 6, characterized in that each connection flap (66) adjacent the folding line (65) between lengthening flap
(63) and connection flap is widened over a portion of the length (L4) of the connection
flap in the direction of the side wall panel (60) of the other pair, in such a way,
that a single slip lip (70) is formed, wherein the folding line between lengthening
flap and connection flap over a portion of the width of the flaps is replaced by a
cut (71), wherein the width (H4) of the single slip lip is greater than the distance
(A4) between the inner edge (66a) of the connection flap and the imaginary extension
(61a) of the folding line (61) between bottom panel (58) and side wall panel (59)
of the one pair, and wherein the edge (60b) of the side wall panel of the other pair
opposite the single slip lip is set back with respect to the imaginary extension of
the folding line between the bottom panel and the side wall panel of the one pair.
10. A blank according to claim 8 or 9, characterized in that each cut (57; 71) encloses an obtuse angle (β) with the folding line (43a; 65) between
lengthening flap (42; 63) and connection flap (44; 66).