TECHNICAL FIELD
[0001] The present invention relates to the field of containers (or boxes or cases) for
example for pharmaceutical and/or cosmetic products, in particular made of paper material
(cardboard or paperboard). More particularly, it relates to a container with a bottom
resistant to opening for containing, for example, a bottle or a heavy jar (for example
made of glass) for a pharmaceutical product, a cosmetic product, a supplement or the
like.
PRIOR ART
[0002] According to the present state of the art containers made of paper material having
a bottom resistant to opening for containing products such as, for instance, pharmaceutical
products, cosmetic products or supplements are known. These containers are used for
the packaging, for example, of phials (or small bottles or jars) containing medical
products in liquid form or perfumes or other types of cosmetics, where generally the
bottom must support the weight of the product in order to prevent the phial from accidentally
coming out of its package.
[0003] For example,
Italian Patent No. 01307433, entitled "Scatola con fondo resistente all'apertura" describes a box with a bottom
resistant to opening, made with a sheet of paperboard or other flexible material,
having formed therein first portions arranged side-by-side and separated by folding
lines, forming the main panel, second portions, situated at the end of two of the
first portions, which form the bottom and the lid of the box, covering flaps, situated
at the end of the first portions which, when the box is closed, overlap each other
inside the bottom or the lid, a tab arranged on the side of the first portions, which,
again when the box is closed, is glued to the opposite end of the first portions,
and two folding flaps projecting from the ends of the two second portions and intended
to be inserted and retained underneath the opposite main panel, when the box is packaged
and closed. Moreover, the box has on the folding flap associated with the second portion
forming the bottom and along its folding line one or more incisions, which define
one or more slits and one or more corresponding first tabs which, when the box is
closed, project from the said bottom and the side wall, and also has on a side edge
of at least one of the two covering flaps associated with the bottom at least one
second projecting tab which, when the box is closed, is firstly inserted inside the
aforementioned corresponding slit and then overlaps the aforementioned corresponding
first tab, the second tab also projecting form the said bottom and the side wall.
SUMMARY OF THE INVENTION
[0005] The Applicant has pursued the object of providing a container for a pharmaceutical
product comprising a bottom having an improved strength.
[0006] This object is achieved by a container with a bottom resistant to opening having
a locking closure system for the bottom, the system comprising a locking slot and
a pair of coupling tabs, wherein:
- the locking slot is formed on a closing tab of the bottom and is suitable for being
engaged, when the container is closed, by the pair of coupling tabs;
- the coupling tabs are formed on one edge of two bottom closing flaps of the container;
and
- the two bottom closing flaps of the container are suitable for overlapping at least
partially when the container is closed.
[0007] In particular, according to an embodiment of the present invention, when the two
bottom closing flaps are folded over so as to partially overlap one another, the two
coupling tabs are overlapping. According to the invention the two bottom closing flaps
further comprise, on the edge opposite to the coupling tabs, two contrasting tabs
which act as an abutment for the coupling tabs and keep them in position so that they
engage stably inside the locking slot when the container is closed.
[0008] Preferably, the two bottom closing flaps are suitable for overlapping each other
along a portion equal to between about 40% and about 80% of a length of said bottom
closing flaps.
[0009] Preferably, the coupling tabs are suitable for overlapping one another at least partially
when the bottom closing flaps are at least partially overlapping.
[0010] Preferably, the contrasting tabs are suitable for being placed side-by-side when
the bottom closing flaps are at least partially overlapping.
[0011] Preferably, the bottom closing tab comprises, on a free edge thereof, a an inlet
in the shape of a lunette.
[0012] Preferably, the container comprises, along an edge of a panel thereof opposite to
the bottom, a notch suitable for receiving the coupling tabs so that an end portion
of the coupling tabs protrudes from the edge of the panel.
BRIEF DESCRIPTION OF THE FIGURES
[0013] The present invention will become clearer from the following detailed description,
provided purely by way of a non-limiting example, to be read with reference to the
accompanying figures, in which:
- Figure 1a shows the plan-view layout of a sheet of paper material which can be used
to form the container according to the present invention;
- Figure 1b is an exploded view of the sheet of Figure 1a; and
- Figures 2-6 show the successive stages for closing the bottom of the container according
to the present invention.
DETAILED DESCRIPTION
[0014] Figures 1a and 1b show a punched sheet 1 of paper material which can be used to form
a container for a pharmaceutical product according to embodiments of the present invention.
The container according to the present invention comprises a locking closure system
for the bottom which advantageously ensures high strength to said bottom and prevents
the content from accidentally falling, as will be clarified below. The reference number
1 will be used to indicate indifferently both the sheet shown in Figures 1a and 1b
and the container according to the present invention.
[0015] In the present description and the claims, the expression "paper material" will be
understood as meaning cardboard or paperboard. "Cardboard" is understood as meaning
a material formed by a central corrugated paper layer and two flat lateral paper sheets.
"Paperboard" is understood as meaning a material formed by a paper sheet with a large
thickness and/or high gram weight, preferably of between about 200 g/m
2 and about 500 g/m
2 ("stiff paperboard").
[0016] The sheet 1 may be shaped, as is known, by means of a punch. The punched shape may
be flat or cylindrical.
[0017] The sheet 1 comprises a central portion comprising in turn a first panel 2, a second
panel 3, a third panel 4 and a fourth panel 5 which are adjacent to each other and
separated, respectively, by means of a first crease line 6a, a second crease line
6b and a third crease line 6c. As is known, a crease line defines a folding line of
the sheet. The panels 2, 3, 4 and 5 have a rectangular shape and are configured to
be folded so as to form the container which has four outer faces which may have on
them illustrations and/or writing containing information for the user. The first panel
2 and the third panel 4 define, respectively, an operating face and a main face while
the second panel 3 and the fourth panel 5 define side faces.
[0018] The first panel 2 and the fourth panel 5 are located at the ends of the sheet 1.
The central portion further comprises a lateral gluing tab 7 which is connected to
the first panel 2 by means of a fourth crease line 8. During assembly of the container
according to the present invention, the gluing tab 7 is glued to the fourth panel
5 on the inside of the container.
[0019] At the first panel 2, at one end corresponding to one of the short sides of the said
panel, the sheet 1 comprises a first closing portion 9a. A second closing portion
9b is provided at one end of the third panel 4, at a short side of said panel which
is located in the opposite position to that of the short side of the first panel 2
from which the first closing portion 9a extends. A fifth crease line 10a is present
between the first closing portion 9a and the first panel 2. Similarly, a sixth crease
line 10b is present between the second closing portion 9b and the third panel 4. When
the container is formed by folding the panels 2, 3, 4, 5 and the gluing tab 7 (along
the crease lines 6a, 6b, 6c and 8) and folding the portions 9a, 9b along the crease
lines 10a, 10b described above, the first closing portion 9a forms the bottom of the
container 1 while the second closing portion 9b forms the lid of the container 1.
[0020] Moreover, the first closing portion 9a is connected, at its end opposite to the fifth
crease line 10a, to a first closing tab 11a. Similarly, the second closing portion
9b is connected, at its end opposite to the sixth crease line 10b, to a second closing
tab 11b. The side edges of these closing tabs 11a and 11b are preferably rounded.
Both the first closing tab 11a and the second closing tab 11b are separated from the
first closing portion 9a and from the second closing portion 9b, respectively, by
a corresponding seventh crease line 12a and eighth crease line 12b. Preferably, each
of said seventh and eighth crease lines 12a, 12b comprises, at its two ends along
the edges of the sheet, two incisions.
[0021] During closing of the container according to the present invention, the first closing
tab 11a and the second closing tab 11b are folded and inserted into the container,
each one opposing the inner end portion of the third panel 4 and of the first panel
2, respectively, as will be explained in more detail below.
[0022] The sheet 1 further comprises, at the two opposite ends of the second panel 3, a
first bottom closing flap 13a and first lid closing flap 13b. Similarly, the sheet
1 comprises, at the two opposite ends of the fourth panel 5, a second bottom closing
flap 14a and a second lid closing flap 14b. Each closing flap 13a, 13b, 14a, 14b is
separated from the respective panel 3, 5 by a corresponding ninth crease line 15a,
tenth crease line 15b, eleventh crease line 15c, and twelfth crease line 15d. When
forming the container according to the present invention, the two bottom closing flaps
13a and 14a are folded so as to overlap at least partially on one another inside the
container, therefore overlapping the bottom 9a. Similarly, the two closing flaps 13b
and 14b are folded so as to overlap one another at least partially inside the container
in the proximity of the lid. Preferably, the two bottom closing flaps 13a and 14a
have a length L (see Figure 1a) and are such that they overlap each other along a
portion equal to between about 40% and about 80% of this length L. For example, the
length L of the two bottom closing flaps 13a and 14a may be about 45 mm and when the
two flaps are folded onto each other they overlap each other along about 30 mm of
this length L.
[0023] According to the present invention, the first closing tab 11a preferably comprise,
along the seventh crease line 12a which connects it to the first closing portion 9a,
a locking slot 16. The locking slot 16 is preferably positioned centrally along the
seventh crease line 12a which separates the first closing tab 11a from the first closing
portion 9a.
[0024] Moreover, the first closing tab 11a preferably comprises, on its free edge, in an
almost central position along this edge, an inlet 17 in the shape of a lunette.
[0025] The first bottom closing flap 13a preferably has a first side edge 17a and a second
side edge 17b, as well as a free edge 18 in an opposite position to the ninth crease
line 15a which separates the closing flap 13a from the panel 3.
[0026] The first side edge 17a is situated in a position adjacent to a side edge of the
first closing portion 9a in the plan-view layout of the sheet 1 shown in Figures 1a
and 1b. The first side edge 17a is preferably shaped. In particular, the first side
edge 17a preferably has a recessed part with an inclined profile which defines, in
proximity of the end of the first side edge 17a at the free edge 18 of the closing
flap 13a, a first contrasting tab 19. More preferably, the first contrasting tab 19
is situated on the end of the first side edge 17a at the free edge 18 of the closing
flap 13a. The first side edge 17a is preferably inclined inwards. Moreover, as shown
for example in Figures 1a and 1b, the first contrasting tab 19 has, at the free edge
18 of the closing flap 13a, a chamfered corner. As can be seen in Figure 1a, the first
contrasting tab 19 preferably does not project with respect to an edge of the second
panel 3 as defined by the first crease line 6a. More preferably, the first contrasting
tab 19 is aligned with the edge of the second panel 3, as defined by the first crease
line 6a. Finally, preferably, the first contrasting tab has a length, along the first
side edge 17a, equal to about at least one third of a total length of said first side
edge 17a.
[0027] The second side edge 17b is situated on the opposite side of the flap with respect
to the first side edge 17a. The second side edge 17b is also preferably shaped. In
particular, it has, at its end close to the crease line 15a, a first relief 20a. The
second side edge 17b also has a first coupling tab 21 projecting from said edge 17b
in a position preferably close to the other end of the second side edge 17b. Preferably,
when the container is formed and the two bottom closing flaps 13a and 14a are folded
onto each other, the middle of the first coupling tab 21 is at a distance from the
ninth crease line 15a which corresponds substantially to half the distance between
the ninth crease line 15a and the eleventh crease line 15c. Moreover, when the two
bottom closing flaps 13a and 14a are folded onto each other, the middle of the first
coupling tab 21 is situated substantially halfway along the crease line 12a, in a
position corresponding to the position of the locking slot 16.
[0028] The first lid closing flap 13b preferably has a first side edge 22a and a second
side edge 22b, as well as a free edge 23 in an opposite position to the tenth crease
line 15b which separates the first closing flap 13b from the second panel 3.
[0029] The first side edge 22a is situated at the side of the second panel 3 separated from
the first panel 2 by the first crease line 6a. The first side edge 22a is preferably
shaped. In particular, the first side edge 22a preferably has an inclined profile
and, at its end close to the tenth crease line 15b, a second relief 20b. The second
side edge 22b is also shaped, and in particular has a profile slightly inclined from
the tenth crease line 15b towards the free edge 23. In this way, when the closing
flap of the lid 13b is folded towards the inside of the container, this edge is situated
at a distance of a few mm from the eighth crease line 10b of the second portion 9b.
[0030] The second bottom closing flap 14a preferably has a first side edge 24a and a second
side edge 24b, as well as a free edge 25 in an opposite position to the eleventh crease
line 15c which separates the second bottom closing flap 14a from the fourth panel
5.
[0031] The first side edge 24a is situated at the side of the fourth panel 5 separated from
the third panel 4 by the third crease line 6c. The first side edge 24a is preferably
shaped. In particular, the first side edge 24a preferably has, at its end close to
the eleventh crease line 15c, a first relief 26a. The first side edge 24a also has
a second coupling tab 27 projecting from said edge 24a in a position preferably close
to the other end of the first side edge 24a. Preferably, when the container is formed
and the two bottom closing flaps 13a and 14a are folded onto each other, the middle
of the second coupling tab 27 is situated at a distance from the eleventh crease line
15c which corresponds substantially to half the distance between the ninth crease
line 15a and the eleventh crease line 15c. Moreover, when the two bottom closing flaps
13a and 14a are folded onto each other, the middle of the second coupling tab 27 is
situated substantially halfway along the crease line 12a, in a position corresponding
to the position of the locking slot 16.
[0032] The second side edge 24b is situated on the opposite side of the second bottom closing
flap 14a with respect to the first side edge 24a. The second side edge 24b is also
preferably shaped. In particular, it has a recessed part with an inclined profile
which defines, at the end of the second side edge 24b at the free edge 25 of the second
closing flap 14a, a second contrasting tab 28. More preferably, the second contrasting
tab 28 is situated on the end of the second side edge 24b at the free edge 25 of the
second closing flap 14a. The second side edge 24b is preferably inclined inwards.
Moreover, as shown for example in Figures 1a and 1b, the second contrasting tab 28
has, at the free edge 25 of the second closing flap 14a, a chamfered corner. As can
be seen in Figure 1a, the second contrasting tab 28 preferably does not project with
respect to an edge of the fourth panel 5. More preferably, the second contrasting
tab 28 is aligned with the edge of the fourth panel 5. Finally, preferably, the second
contrasting tab 28 has a length, along the second side edge 24b, equal to about at
least one third of a total length of said second side edge 24b.
[0033] The second lid closing flap 14b preferably has a first side edge 29a and a second
side edge 29b, as well as a free edge 30 in an opposite position to the twelfth crease
line 15c which separates the second lid closing flap 14b from the panel 5.
[0034] The first side edge 29a is situated facing the second closing portion 9b and is shaped.
In particular, it has a profile which is slightly inclined from the crease line 15d
towards the free edge 30. In this way, when the lid closing flap 14b is folded towards
the inside of the container, this edge is situated at a distance of a few mm from
the eighth crease line 10b of the second closing portion 9b. The second side edge
29b is located at the free side of the fourth panel 5. The second side edge 29b is
preferably shaped. In particular, the second side edge 29b preferably has an inclined
profile and, at its end close to the twelfth crease line 15d, a second relief 26b.
[0035] Preferably, the position of the first coupling tab 21 and the second coupling tab
27 along, respectively, the second side edge 17b of the first bottom closing flap
13a and the first side edge 24a of the second bottom closing flap 14a is such that
the coupling tabs 21 and 27 overlap one another at least partially when the bottom
closing flaps 13a and 14a are folded towards the inside of the container so as to
be at least partially overlapping.
[0036] According to the present invention, the third panel 4 preferably comprises a notch
31 on its free edge situated opposite to the edge connected to the second closing
portion 9b. The notch 31 is preferably situated halfway along the free edge of the
third panel 4.
[0037] Figures 2-6 show the stages of assembly of the container according to the present
invention and in particular the stages of closing the bottom of the container by means
of the locking system described above, which will be illustrated more clearly below.
[0038] Figure 2 shows the container according to the present invention, partially assembled.
In particular, in the container shown in Figure 2, the panels 2, 3, 4 and 5 have been
folded along the crease lines 6a, 6b, 6c, and the gluing tab 7 has been folded along
the crease line 8 and glued inside the fourth panel 5. In this Figure it is possible
to see the bottom of the container, formed by the first closing portion 9a with the
corresponding closing tab 11a and the bottom closing flaps 13a, 14a.
[0039] In Figure 3, the two bottom closing flaps 13a, 14a have been folded along the crease
lines 15a, 15c towards the inside of the container and overlap each other. The two
bottom closing flaps 13a, 14a are thus partially overlapping. In particular, the two
coupling tabs 21, 27 present on the edge of the two bottom closing flaps 13a, 14a
overlap one another at least partially in a position corresponding to the position
of the notch 31 on the free edge of the third panel 4. When the two bottom closing
flaps 13a, 14a are folded onto each other the overlapping coupling tabs 21, 27 are
engaged inside the notch 31. The presence of the notch 31 allows the end portion of
the coupling tabs 21, 27 to protrude outside of the third panel 4 so as to allow the
tabs 21, 27 to be inserted inside the locking slot 16 of the first closing tab 11a.
[0040] Figure 3 also show the two contrasting tabs 19, 28. Once the two bottom closing flaps
13a, 14a are folded towards the inside of the container and partially overlapped,
the two contrasting tabs 19, 28 are situated side-by-side and abut against the fifth
crease line 10a which connects the first closing portion 9a to the first panel 2.
The two contrasting tabs 19, 28 help keep the two coupling tabs 21, 27 in position.
[0041] Figure 4 shows the first closing tab 11a folded along the crease line 12a. Figure
4 shows the locking slot 16 inside which the two coupling tabs 21, 27 are inserted
once the container is closed. In order to close the bottom of the container, the first
closing portion 9a is moved close to the edge of the third panel 4 such that the first
closing tab 11a may be inserted inside the container in contact with the third panel
4, as shown in Figure 5. The inlet 17 facilitates the insertion of the first closing
tab 11a at the edge of the third panel 4. Moreover, the incisions present at the ends
of the crease line 12a which connects the first closing tab 11a to the first closing
portion 9a engage with the first reliefs 20a and 26a of the two bottom closing flaps
13a and 14a.
[0042] Figure 6 shows the container closed and in particular the bottom of the container
with the locking closure system of the present invention correctly engaged.
[0043] Advantageously, the locking closure system according to the present invention allows
the formation of a bottom having a high strength which prevents the bottle present
inside the container from accidentally falling out. The two bottom closing flaps,
when folded towards the inside of the container along the corresponding crease lines,
overlap one another at least partially and overlap the bottom of the container, thus
ensuring that the thickness of the container at the bottom is greater compared to
a box in which the closing flaps are simply arranged side-by-side after being folded
towards the inside of the container. Moreover, the locking closure system comprising
the locking slot and the pair of coupling tabs ensures that the bottom remains closed
even when a fairly heavy bottle is present. The coupling tabs in fact engage stably
with the locking slot, ensuring a strong locking action which prevents accidental
opening of the bottom.
[0044] Moreover, advantageously, compared to the known boxes, the presence of the contrasting
tabs on the closing flaps of the container according to the present invention further
increases the strength of the bottom. In the known boxes, when they are closed, the
edge of the flaps is situated usually at a distance of a few mm from the crease line
of the portion. In this case, instead, the contrasting tabs act as an abutment, on
the opposite edge and against the crease line of the portion, for the coupling tabs.
The contrasting tabs, when the container is closed, in fact come into abutment against
the crease line of the bottom portion of the container, therefore keeping the coupling
tabs in position in a stable and precise manner.
1. A container (1) with a bottom (9a) resistant to opening comprising a locking closure
system for its bottom (9a), said locking closure system comprising a locking slot
(16) and a pair of coupling tabs (21, 27), wherein:
- the locking slot (16) is formed on a closing tab (11a) of the bottom (9a) of the
container (1), and is suitable for being engaged, when the container (1) is closed,
by said pair of coupling tabs (21, 27);
- the coupling tabs (21, 27) are formed on one edge (17b, 24a) of two bottom closing
flaps (13a, 14a) of the container (1); and
- the two bottom closing flaps (13a, 14a) of the container (1) are suitable for overlapping
at least partially so as to close the container (1) at the bottom,
characterised in that
the bottom closing flaps (13a, 14a) comprise, on an edge opposite to said edge on
which the coupling tabs (21, 27) are formed, two contrasting tabs (19, 28) suitable
for acting as an abutment for said coupling tabs (21, 27) against a crease line (10a)
of the bottom (9a).
2. The container (1) according to claim 1, wherein the two bottom closing flaps (13a,
14a) are suitable for overlapping along a portion equal to between about 40% and about
80% of a length (L) of said bottom closing flaps (13a, 14a).
3. The container (1) according to claim 1 or claim 2, wherein said coupling tabs (21,
27) are suitable for overlapping one another at least partially when said bottom closing
flaps (13a, 14a) are at least partially overlapping.
4. The container (1) according to any one of the preceding claims, wherein said contrasting
tabs (19, 28) are suitable for being placed side-by-side when said bottom closing
flaps (13a, 14a) are at least partially overlapping.
5. The container (1) according to any one of the preceding claims, wherein the closing
tab (11a) of the bottom comprises, on a free edge thereof, an inlet (17) in the shape
of a lunette.
6. The container (1) according to any one of the preceding claims, wherein said container
(1) comprises, at an edge of a panel (4) thereof opposite to said bottom (9a), a notch
(31) suitable for receiving said coupling tabs (21, 27) so that an end portion of
said coupling tabs (21, 27) protrudes from said edge of said panel (4).
1. Behälter (1) mit einem öffnungssicheren Boden (9a), der ein Verriegelungsschließsystem
für seinen Boden (9a) aufweist, wobei das Verriegelungsschließsystem einen Verriegelungsschlitz
(16) und ein Paar Verbindungslaschen (21, 27) aufweist, wobei:
- der Verriegelungsschlitz (16) auf einer Verschlusslasche (11a) des Bodens (9a) des
Behälters (1) gebildet ist und, wenn der Behälter (1) geschlossen ist, zum Eingreifen
durch das Paar Verbindungslaschen (21, 27) geeignet ist;
- die Verbindungslaschen (21, 27) an einem Rand (17b, 24a) von zwei Bodenverschlussklappen
(13a, 14a) des Behälters (1) gebildet sind; und
- die zwei Bodenverschlussklappen (13a, 14a) des Behälters (1) für ein mindestens
teilweises Überlagern geeignet sind, um den Behälter (1) am Boden zu schließen,
dadurch gekennzeichnet, dass
die Bodenverschlussklappen (13a, 14a) an einem Rand gegenüber dem Rand, an welchem
die Verbindungslaschen (21, 27) gebildet sind, zwei entgegenstehende Laschen (19,
28) aufweisen, die geeignet sind, als ein Wiederlager für die Verbindungslaschen (21,
27) gegen eine Faltlinie (10a) des Bodens (9a) zu wirken.
2. Behälter (1) nach Anspruch 1, wobei die zwei Bodenverschlussklappen (13a, 14a) geeignet
sind, sich entlang eines Abschnitts entsprechend zwischen etwa 40% und etwa 80% einer
Länge (L) der Bodenverschlussklappen (13a, 14a) zu überlagern.
3. Behälter (1) nach Anspruch 1 oder 2, wobei die Verbindungslaschen (21, 27) geeignet
sind, sich gegenseitig zumindest teilweise zu überlagern, wenn sich die Bodenverschlussklappen
(13a, 14a) zumindest teilweise überlagern.
4. Behälter (1) nach einem der vorhergehenden Ansprüche, wobei die entgegenstehenden
Laschen (19, 28) für ein Anordnen nebeneinander geeignet sind, wenn die Bodenverschlussklappen
(13a, 14a) sich zumindest teilweise überlagern.
5. Behälter (1) nach einem der vorhergehenden Ansprüche, wobei die Verschlusslasche (11a)
des Bodens an einem freien Rand eine Einbuchtung (17) in der Form einer Lünette aufweist.
6. Behälter (1) nach einem der vorhergehenden Ansprüche, wobei der Behälter (1) an einem
Rand eines Feldes (4) gegenüber dem Boden (9a) eine Aussparung (31) aufweist, die
geeignet zum Aufnehmen der Verbindungslaschen (21, 27) ist, so dass ein Endabschnitt
der Verbindungslaschen (21, 27) von dem Rand des Feldes (4) hervorsteht.
1. Contenant (1) avec un fond (9a) résistant à l'ouverture comprenant un système de fermeture
à verrouillage pour son fond (9a), ledit système de fermeture à verrouillage comprenant
une fente de verrouillage (16) et une paire de languettes de couplage (21, 27), dans
lequel :
la fente de verrouillage (16) est formée sur une languette de fermeture (1 1a) du
fond (9a) du contenant (1) et est appropriée pour être mise en prise, lorsque le contenant
(1) est fermé, par ladite paire de languettes de couplage (21, 27) ;
les languettes de couplage (21, 27) sont formées sur un bord (17b, 24a) de deux rabats
de fermeture de fond (13a, 14a) du contenant (1) ; et
les deux rabats de fermeture de fond (13a, 14a) du contenant (1) sont appropriés pour
se chevaucher au moins partiellement afin de fermer le contenant (1) au niveau du
fond,
caractérisé en ce que :
les rabats de fermeture de fond (13a, 14a) comprennent, sur un bord opposé audit bord
sur lequel les languettes de couplage (21, 27) sont formées, deux languettes de contraste
(19, 28) appropriées pour servir de butée pour lesdites languettes de couplage (21,
27) contre une ligne de cassure (10a) du fond (9a).
2. Contenant (1) selon la revendication 1, dans lequel les deux rabats de fermeture de
fond (13a, 14a) sont appropriés pour se chevaucher le long d'une partie égale à une
valeur comprise entre environ 40% et environ 80% d'une longueur (L) desdits rabats
de fermeture de fond (13a, 14a).
3. Contenant (1) selon la revendication 1 ou la revendication 2, dans lequel lesdites
languettes de couplage (21, 27) sont appropriées pour se chevaucher au moins partiellement
lorsque lesdits rabats de fermeture de fond (13a, 14a) se chevauchent au moins partiellement.
4. Contenant (1) selon l'une quelconque des revendications précédentes, dans lequel lesdites
languettes de contraste (19, 28) sont appropriées pour être placées côte à côte lorsque
lesdits rabats de fermeture de fond (13a, 14a) se chevauchent au moins partiellement.
5. Contenant (1) selon l'une quelconque des revendications précédentes, dans lequel la
languette de fermeture (11a) du fond comprend, sur son bord libre, une entrée (17)
en forme de lunette.
6. Contenant (1) selon l'une quelconque des revendications précédentes, dans lequel ledit
contenant (1) comprend, au niveau d'un bord de son panneau (4) opposé audit fond (9a),
une encoche (31) appropriée pour recevoir lesdites languettes de couplage (21, 27)
de sorte qu'une partie d'extrémité desdites languettes de couplage (21, 27) fait saillie
dudit bord dudit panneau (4).