Note: Descriptions are shown in the official language in which they were submitted.
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Plastic container with snap lid
The invention relates to a plastic container with a snap lid
and with a snap element provided on an upper edge area of the
container for the lid to snap onto, where the lid being snapped
onto the container and has an area that is in tight contact
with the upper edge area of the container, the areas of the lid
and of the container cooperating under tight contact generate a
sealing region.
Plastic containers of this kind are used to transport various
goods, particularly also in the industrial and food sectors,
and have proven to be very effective for this purpose. However,
transporting liquids or low-viscosity materials still involves
the problem of the sufficient leak-proofness of the plastic
containers. This is the case particularly when transporting
volatile or other types of critical goods, such as oils,
particularly mineral oils. In these cases, especially high
demands must be imposed on the leak-proofness of the plastic
container, which have not yet been fulfilled satisfactorily by
previously known plastic containers, even though numerous
attempts have been made to achieve sufficient leak-proofness by
providing the container edge and the lid with a corresponding
profile. Consequently, these goods are usually transported in
metal containers.
DE 4422534 Al discloses a generic injection-molded single edge
plastic container with a snap lid, whereby by mounting the lid,
the lid is inserted into the opening of the container with the
interior surface thereof, so that a circumferential edge of the
lid with its inner side comes into tight contact with the wall
of the container.
The object of the invention is to design a plastic container
Amended page
CA 02404876 2002-10-O1
la
.,
with snap lid, which reliably fulfils the special demands
imposed on leak-proofness.
Amended page
CA 02404876 2002-10-O1
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CA 02404876 2002-10-O1
2
lid, the sealing region between the container and the lid is
provided with a circumferential seal made of a material of
greater elasticity than the container and the lid and in that
the seal is integrally moulded on at least one of the coopera-
tion areas of the lid and of the container generating the seal-
ing region,
That means, that the sealing region is provided with an inte-
grally moulded, circumferential seal that sits tightly between
the container and the lid when the lid is in place, where the
seal is made of a material of greater elasticity than that of
the lid and/or the bucket, particularly a rubber material. The
seal is thus integrally moulded on the container, consisting of
the bucket and the lid. In this way, the tolerances that can
occur with a manually inserted seal are avoided and the seal is
fastened to the lid or the container such that, even when ex-
posed to external forces, e.g. if containers fall, the seal is
always located on the component in unmoveable fashion. The seal
is preferably integrally moulded by an injection process, e.g.
injection moulding, so that joints or the like can be avoided.
The seal can be injected in the same mould immediately after
the moulding of the associated container part, so that particu-
larly low manufacturing and fit tolerances can be maintained.
The seal is advantageously integrally moulded on the lid, where
the width of the seal can be greater than the wall thickness of
the upper container edge, e.g. roughly 1.5 to 3 times greater,
without being restricted to this. The seal can have an essen-
tially horizontal sealing region and it can also be profiled,
e.g. U or V-shaped. One, two or even more different sealing re-
gions can be provided that differ in terms of their contact
width, which can be either linear or planar, their material
thickness or other characteristics. The sealing regions can be
interconnected and/or radially or axially separated from one
another.
~ CA 02404876 2002-10-O1
3
The seal is advantageously located in a circumferential groove
in the lid that is open towards the container edge, where the
seal can extend over the entire width of the groove and is thus
additionally secured against lateral shifting. The side flanks
of the groove can surround the inside and outside of the con-
tainer edge, preferably with slight lateral play, or none at
all, without being restricted to this.
The seal preferably has two, adjacent sealing regions that are
at different angles and tightly contact areas of the container
edge at different angles. To this end, the seal can have a U, V
or L-shaped cross-section, in particular, or other profiles,
where the sealing regions can be arranged on areas of the seal
that face each other, possibly also in a convex area, for exam-
ple. The sealing regions at different angles can be designed as
a single part or multiple parts, i.e. not of continuous design,
where one or more, or preferably all of the segments of the
seal are integrally moulded on the container and/or lid.
When the container is closed, the seal preferably has an ess-
entially horizontal area that tightly contacts the top edge of
the container edge and a radially inward area that preferably
slopes downwards and tightly contacts the inside of the upper
container edge. The downwardly sloping sealing region can ex-
tend essentially vertically or at an angle when the container
is in upright position, where the two sealing regions can en-
close an angle of 90° to 135° or more. The sloping sealing re-
gion thus also ends in a sloping area and preferably extends in
essentially linear fashion. The length of the sloping sealing
region can be roughly equal to the length of the horizontal
sealing region, e.g. one-quarter to the entire length of the
same or more. The container edge preferably likewise has a
horizontal sealing region and a radially inward bevel or cham-
fer for positioning the vertical or angled sealing region. How-
ever, other designs are also possible. As a result, forces are
CA 02404876 2002-10-O1
4
always absorbed in the region of the flexible seal, even forces
acting laterally on the sealing region, so that a high degree
of leak-proofness is ensured.
The seal can have one or more circurnferential sealing ribs pro-
jecting towards the container edge, which contact an area of
the container, particularly the top edge of the container. The
height of the sealing ribs can be less than the wall thickness
of the container. The container edge can be plane or provided
with one or more circumferential ribs, pairs of which can form
a groove that is at least partially engaged by one or more
sealing ribs. The sealing ribs can be provided on different ar-
eas of the seal, e.g. on a horizontal and/or vertical or angled
area. The cross-sections of the sealing ribs need not be the
same as the circumferential grooves of the container edge, as
long as a sufficient sealing effect is achieved. The cross-
section of the groove of the container edge can be equal to or
smaller than the cross-section of the sealing rib, so that the
groove is completely filled by the flexible sealing rib when
the lid is in place. The groove cross-section can also be lar-
ger than that of the engaging sealing ribs and, in this con-
text, counteract the lateral shifting of the same, for example,
a purpose that can also be fulfilled by just a web. The web or
edge delimiting the groove can also tightly contact the seal.
If necessary, one or more ribs can also be provided on the con-
tainer edge that engage recesses provided for this purpose in
the flexible seal. In particular, the seal and container edge
structures that come into contact can be incompatible or non-
complementary, so that elevations on the seal do not lie oppo-
site depressions in the container edge, but rather contact ele-
vations on the container edge, e.g. in the flank area of the
same. This results in non-congruent interlocking that ensures
high and reliable leak-procfness. In this context, the height
of the sealing ribs is preferably less than the wall thickness
of the container, e.g. 1/2 to 1/5 of the same or less, without
CA 02404876 2002-10-O1
being restricted to this.
The container edge can also be provided with at least one rib
for sealing the container that comes into contact with a plane
area of the seal. The rib is preferably so high that, when the
lid is on, the rib at least partially or essentially completely
digs into the seal, which has greater elasticity than the con-
tainer material.
The seal preferably has a height or thickness such that it si-
multaneously acts as a deformation zone when force is exerted
on the container or the lid in the sealing region, so that de-
formation of the more rigid lid and container areas is avoided
when exposed to certain forces.
In order to seal the container when the lid is on, the hori-
zontal and/or vertical or downward-sloping area of the seal can
make flat contact with a partial area, or preferably the entire
surface area (i.e. over the entire radial extension) of the
corresponding contact areas of the container or lid.
Webs projecting radially outward, which can be designed as
circumferential ribs whose radial extension is less than the
container wall thickness, can be integrally moulded on the out-
wardly downward-sloping area of the outer container wall adja-
cent to the top edge of the container. These ribs can be made
of the same material as the container wall and essentially
serve to reduce the friction when putting on the lid, where
they only have a secondary sealing function, which is primarily
fulfilled by the flexible and compressible seal. Two or more
circumferential ribs of this kind can also be provided on the
outer edge of the container. When the lid is in place, the ribs
preferably make contact without play, but also without any sig-
nificant pretension, so that the lid is precisely positioned in
the region of the seal, or are spaced apart with slight play,
CA 02404876 2002-10-O1
6
without being restricted to this.
In order to stabilise the sealing region, a radially projecting
reinforcing rib is integrally moulded, preferably on. the out-
side, on the container edge on the side of the snap element
facing the top edge of the container. The reinforcing rib pref-
erably runs radially around the container. It can also be di-
vided and consist of several reinforcing segments. Alterna-
tively or additionally, one or more additional reinforcing ribs
can be integrally moulded on the side of the snap element fac-
ing towards or away from the top edge of the container. The
thickness, i.e. height and/or width, of the reinforcing rib can
be in the region of half the wall thickness of the container,
preferably in the region of the wall thickness or also greater.
Arranging the reinforcing rib adjacent to the flexible seal
makes the sealing region of the container particularly stable.
The lid is preferably in contact with the radially outer side
of the reinforcing rib with or without pretension, so that
forces acting on the side of the lid are absorbed directly by
the reinforcing rib. For this purpose, the radially outer side
of the reinforcing rib can have a plane area. The space between
the reinforcing rib and the snap element can be designed to ac-
commodate the snap edge of the lid. If necessary, reinforcing
ribs can also be provided on the inside of the container.
Advantageously, the snap connection of the lid is also equally
effective after the container has been opened once, i.e. the
snap region and the sealing region are not separated by an area
of thinner material that serves as a tamper-proof seal, for ex-
ample, and in which the lid area has to be partially or com-
pletely removed or folded over in order to open the container.
The snap element can be provided directly on the top edge of
the container or at a distance away from it, e.g. also on an
outwardly projecting edge.
CA 02404876 2002-10-O1
The snap element for attaching the lid is preferably provided
on the outer wall of the container, o.x also on the inside, if
appropriate.
The lid preferably has an outward-facing sliding bevel, which
can be joined to the top edge of the lid or a region below it,
preferably on an essentially vertical section. The sliding
bevel can be located immediately above the reinforcing rib pro-
vided above the snap element on the outer wall of the container
and a small distance away from it. The sliding bevel can be ra-
dially flush with the snap edge of the lid on the outside, or
extend beyond it, although it preferably extends radially be-
yond the areas projecting away from the container wall.
The upper edge of the container preferably has a circumferen-
tial collar region projecting radially outward and facing down-
ward, on which the snap element is integrally moulded. In this
context, a reinforcing rib integrally moulded above the snap
element and facing outward can also be integrally moulded on
the circumferential container collar, thus also reinforcing it,
and/or above the circumferential collar region right on the
container wall. Due to the downward-facing collar region, which
is spaced apart from the container wall, the snap region is
isolated from the sealing region in terms of the forces acting
on them.
The downward-facing, circumferential collar region is prefera-
bly joined at the top edge of the container, i.e. at the height
of the sealing region or at a distance of a few times the wall
thickness away, e.g. one or two times, without being restricted
to this.
The container preferably has a collar region projecting radi-
ally outward and facing downward, which is located below the
lid when it is on the container and extends radially to the lid
CA 02404876 2002-10-O1
8
or also beyond it. This circumferential collar region can be
integrally moulded on the container .wall separately and, in
this context, be flush with the bottom edge of the circumfe-
rential collar region with the snap edge, or spaced apart from
it in terms of height. This circumferential collar region is
preferably designed as a continuation of the collar region ac-
commodating the snap element, i.e. as a shoulder continuing
down and to the outside.
A corresponding tamper-proof seal can be provided in this area.
The bottom edge of the lid can sit on this collar region with
or without.pretension, or display a slight amount of play in
relation to it, preferably such that the bottom edge of the lid
cannot be reached under manually. This circumferential collar
region can have a radial constriction for the partial or com-
plete reception of the bottom edge of the lid.
The circumferential collar region or regions can be reinforced
by vertical ribs, which can be located in the inside of the
collar region and connected to the outer wall of the container.
The reinforcing ribs preferably have a recess or notch at the
bottom, due to which the collar region retains a certain degree
of flexibility and can act as a deformation zone.
The lid preferably has a circumferential area that is spaced
vertically and/or radially away from the flexible seal and
tightly contacts the inside wall of the container when the lid
is in place. This sealing region can be made of the same mate-
rial as the lid. The sealing region can be designed as a down-
wardly projecting rib or also as a shoulder on the underside of
the lid, for example, and is preferably located above an inden-
tation in the container wall when the lid is in place. When the
lid is in place, the sealing region can rest on the indenta-
tion, or be spaced away from it, preferably in such a way that
the underside of the rib or of the shoulder of the lid rests on
CA 02404876 2002-10-O1
9
the container indentation when additional containers are
stacked on tap or when an external force is applied. In this
context, the lid area can tightly contact a preferably essen-
tially vertical container region in linear fashion, or over a
vertical height, preferably at the height of a reinforcing rib
or the snap edge provided on the outside of the container.
In order to increase the reliability of the container seal, an
area projecting upward beyond the bottom edge of the rib can be
provided on the inside wall of the container, which is radially
inside relative to the web-like or circumferential rib inte-
grally moulded on the inside of the lid. To this end, individ-
ual projections or webs can provided that are spread over the
circumference. This area is preferably also designed as a
circumferential rib. The height of this rib, which prevents in-
ward shifting of the rib of the lid, is preferably smaller than
the wall thickness of the container or the lid rib, without be-
ing restricted to this. The upwardly projecting areas of the
container can be slightly spaced apart or contact the side of
the rib of the lid with or without pretension. In this context,
the rib of the lid can also be located in a press fit between
the radially adjacent container areas on the inside and out-
side.
The shoulder of the inside wall of the container, which is lo-
cated below the rib or a shoulder of the lid or the like, can
be located roughly at the height of the snap element or a rein-
forcing rib, or at distance of one or a few times the wall
thickness of the container.
In order to stabilise the sealing region, the iid can be pro-
vided, preferably on the immediately radially inside area of
the container wall, with at least one radially inward projec-
tion that can be integrally moulded on the top side of the lid.
The projection or projections can be of annular, box-like (e. g.
CA 02404876 2002-10-O1
1~
cubic or prismatic) or web-shaped design, without being re-
stricted to this. Inside reinforcing-ribs can be provided in
order to stabilise the box-like or annular projections.
The top side of the projections) is advantageously spaced away
from, preferably above, the lid area in tight contact with the
inside wall of the container, where the point of contact in the
vertical direction can be virtually punctiform or linear. The
cross-section of the projections can be designed in the shape
of a skew triangle or rectangle, where the top and/or bottom
edge of the side walls of the projections can be designed to
slope down towards the inside of the container. The radially
inward end wall of the projections can be vertical or at an an-
gle. The projections can be integrally moulded on the top edge
of the lid. The top edge of the projections is preferably lo-
cated below the top edge of the lid, thus creating another
shoulder. This avoids integral moulding at the height of the
sealing region on the inside of the container, which can lead
to material stress or deformation, e.g. due to shrinkage proc-
esses.
The projections facing the centre of the lid are advantageously
designed such that vertically extending connecting surfaces
with the circumferential sealing rib can be largely or entirely
avoided in the sealing region, such as in the form of lateral
surfaces on the projections or web-like projections. To this
end, projections extending over a relatively large part of the
circumference, or preferably a radial circumferential edge on
the inside of the lid, can be provided. In this context, the
lateral surfaces of the projections can be located at a radial
distance from the circumferential sealing region on the top
side of the projections, so that when looking at the lid from
below, a circumferential groove with an e.g. roughly trapezoi-
dal or triangular cross-section and inwardly facing wider areas
results. The projections, particularly also an annular, circum-
CA 02404876 2002-10-O1
11
ferential projection, can possibly also be reinforced with in-
side ribs, which then preferably end at a radial distance from
the sealing or support rib in contact with the inside wall of
the container, or rest against it at a distance from the seal-
ing region of this rib.
In this context, the top side of the projections can contact
the inside edge of the lid essentially horizontally, preferably
at a downward angle of less than 15°, e.g. 5°, towards the in-
side of the container.
The lid surface blocking the container opening can be positio-
ned level with or below the inside sealing region, preferably
level with or below the snap edge.
A spout can be mounted on the lid, which is preferably located
roughly at one-quarter the diameter of the lid surface area,
thus resulting in practical handling of the bucket when pouring
a liquid.
An example of the invention is described below and explained on
the basis of the figures. The figures show the following:
Fig. 1 A partial cross-section of a container with lid accor-
ding to the invention, with another container stacked
on top,
Fig. 2 A detail view of a container with lid according to
Fig. 1,
Fig. 3 A detail cross-section of a container according to
Fig. l,
Fig. 4 A top view of a container with lid according to Fig.
l,
CA 02404876 2002-10-O1
12
Fig. 5 A diagram of stacked lids according to Fig. 1,
Figure 1 shows an injection-moulded plastic bucket 1 with lid 2
snapped on, where a flat area is provided on top edge 4 of
outer wall 3 of the bucket. Top edge 4 is connected to a cir-
cumferential, radially-projecting collar 5, on which an out-
wardly projecting snap edge 6 is integrally moulded, which is
engaged from below by a circumferential snap edge 7 of the lid
with a hooked projection. The areas of the lid and the bucket
that snap together are designed to be essentially horizontal
and without rounded outer edges, so that a particularly secure
snap connection is provided by the resulting interlocking con-
nection. The snap edges of the bucket and the lid can possibly
also be angled downwards towards the outside, thus strengthen-
ing the interlocking connection.
The region of lid 2 associated with top edge 4 of the bucket is
designed in the shape of a groove or channel, where outer flank
8 of groove 34 is in lateral contact with the two, vertically
spaced circumferential ribs 9 of the bucket. The radial exten-
sion of ribs 9 is considerably less than the wall thickness of
the bucket, roughly one-third in this case. Due to the rounded
top edge of rib 9 and the small width of the ribs, the lid can
easily be pushed onto the bucket, even if sits very tightly
against the edge of the bucket. Here, ribs 9 are located at the
height of section 12 of the seal, where the lid can rest on the
outer wall of the bucket at this height with little or virtu-
ally no pretension, even in the absence of these ribs.
A seal made of an elastic and compressible rubber material is
injected as a single piece on the horizontal base of the groove
in the lid and on radially adjacent inside flank 10. In order
to improve the material bond, the groove base and the area of
contact of the rubber seal with it are provided with congruent
CA 02404876 2005-09-09
13
elevations and depressions. Sealing region 12a associated with
inside groove flank 10 is at an angle to the vertical, at. an
angle of roughly 20° here, where the angle can also taken on
values between 5 and 45°, without being restricted to this. A
further sealing region 11a having a different angle is provided.
When the lid is snapped on, angled region 12a of seal 11 rests
against downwardly sloping bevel 13, which is adjacent to the
inside of top edge 4 of the bucket (see also Figs: 2, 3) and
whose slope corresponds to that of the contact surface of sec-
tion 12 of the seal, without being restricted to this. As a re-
sult of this special design of the seal, the bucket is securely
sealed even when strong forces act on the edge of the bucket.
The section of the lid that surrounds section 12 of the seal on
the inside is also of,bevelled design.
Circumferential collar 5 of the bucket is joined at the height
of top edge 4, so that the cavity 14 delimited by collar 5 ex-
tends up close to the top edge, i.e. up to about once the wall
thickness. The region of top edge 4 of the. bucket is thus also
designed as a U-shaped, circumferential profile.
The essentially vertical leg of U-shaped top edge 4 transitions
towards the outside into a bevel l5 with an angle of roughly
30° to the horizontal, thus forming a stepped shoulder. Snap
edge 6 is integrally moulded below this shoulder, where a ra-
dial, circumferential reinforcing edge I6 is integrally moulded
between the snap edge and the shoulder, at the height of the
shoulder here, which, in this example, is flush towards the
outside with snap edge 6 and has a corresponding width, i.e.
vertical extension. The bottom edge of reinforcing edge 16 is
designed to correspond to that of snap edge 6, so that snap
edge 7 of the lid can also engage the groove located between
edges 6 and 16, to which end the top edge of snap edge 6 also
slopes down towards the outside. When completely snapped on,
the edge of the lid thus rests against the outer edge of snap
edge 6, reinforcing edge 16 and the two ribs 9, where a slight
CA 02404876 2002-10-O1
14
gap is provided between bevel 15 and sliding bevel 17 of the
lid located above it. Sliding bevel-l7 can also be located
above the bottom edge of the lid rim surrounding the top edge
of the container, so that a web projecting downwards towards
bevel 15 is formed, which can possibly also rest on bevel 15 or
an essentially horizontal section of the same.
Circumferential collar 5 has a circumferential shoulder 18 be-
low snap edge 7 that projects away from snap edge 7 beyond the
outer edge of lid 2, where snap edge 7 can rest on shoulder 18
under pretension, or a gap can be provided between the snap
edge and the shoulder. Shoulder 18 has a tamper-proof seal 19,
after whose removal snap edge 7 can be grasped manually from
below and the lid pulled off. Several tear-off tabs can also be
provided that are adjacent or extend over a fairly large seg-
ment of the circumference of the bucket. If necessary, a tam-
perproof seal can also be attached to snap edge 7. It is im-
portant to mention here that the lid area between the groove
accommodating the seal and the snap edge preferably does not
have any significant thinning of the material, so that high
stability, and thus high leak-proofness, is ensured between the
snap connection and seal 11 or the area of the lid located in-
side bucket 1.
The lid has a circumferential sealing rib 20 on the inside
relative to seal 11, which only tightly contacts the inside
wall of the bucket along part of its height, where the sealing
region in this example is formed by the bottom end of the rib,
which is provided roughly at the height of reinforcing edge 16
or the snap edge. Rib 20, which essentially projects vertically
downward, is located at the height of an inwardly projecting
shoulder 21 of the inside wall of the bucket and at a slight
vertical distance from it. When slight vertical pressure is ap-
plied to the lid, rib 20 rests on indentation 21. If the seal-
ing function of the rib is dispensable, individual, downward-
CA 02404876 2002-10-O1
IS
facing, web-like projections can also be provided as an alter-
native. Indentation 21 is delimited ors th.e inside by a circum-
ferential ridge 22, in place of which individual projections
can also be provided, where ridge 22 extends above the bottom
edge of rib 20 and prevents the inward movement of rib 20. Rib
20 can also be received in a press fit between ridge 22 and the
adjacent, outer wall area of the bucket. The sealing region of
rib 20 is formed in that (see Fig. 2) rib 20 is angled slightly
outward and dimensioned such that its bottom edge 35 would come
to rest radially outside the inside wall of the bucket when the
lid is removed. In this case, the thickness of the bottom edge
roughly corresponds to the rib thickness, preferably more than
1/4 of the same, where it is slightly tapered here. As a re-
sult, radially pretensioned contact with the inside wall of the
container is consistently achieved when the lid is on. The
overhang when the lid is removed is smaller than the rib thick-
ness here and amounts to roughly 1/4 the thickness of the bot-
tom edge.
A circumferential, inside edge 23 sloping slightly down towards
the inside, is integrally moulded on rib 20 above the sealing
region, on which inwardly facing bevels 24 or, in spots with a
wider edge, essentially vertical wall areas 25 are integrally
moulded in segments, which transition into the horizontal lid
area 26. Area 26 is located below snap edge 6, where its out-
side diameter is dimensioned, as shown, such that it is possi-
ble to stack buckets. This results in projections with a trian-
gular cross-section that are integrally moulded on a trapezoi-
dal groove open towards the bottom.
In order to enable improved force transmission in, and simul-
taneous stackability of, buckets without lids inside one anot-
her, outer wall 3 of the bucket has a taper or angle to the
outside of less than 3°, preferably 2°, where smaller angles
are also possible. In order to be able to better absorb in the
CA 02404876 2005-09-09
16
edge region the forces that occur when buckets with lids are
stacked, the distance between the side of wall 25 of the pro-
jections facing the centre of the bucket and the opposite outer
wall of the bucket 27 is further designed to allow only slight
play, e.g. with a distance of less than 2 mm, preferably 1 mm.
As shown in the enlarged diagrams in Figs. 2 and 3, top edge 4
of the bucket collar is equipped with two, circumferential ribs
36, which engage the teeth on the underside of seal 11, where
some of the downwardly projecting ribs 37 of the teeth of the
seal come into contact with ribs 36 on the top edge of the
bucket, e.g. in their flank region, thus preventing lateral
shifting of ribs 37, and some make contact next to ribs 36 in
the groove formed between them, or outside of this on container
edge 4. This incongruent design of the two structures makes the
bucket highly leak-proof.
As further illustrated by the Figure, vertical reinforcing ribs
38 that run perpendicular to the outer wall are provided in
cavity 14, which have recesses 33 open towards the bottom,
where the apex of the recess is offset towards the outer wall
of the bucket.
As shown in Fig. 4, circumferential edge 23 of the lid, which
is located on the inside of bucket wall 3, is provided with
segments 28, 29 of different radial width, this resulting in an
effective reinforcing profile, in order to absorb forces on the
sealing region of rib 20 or seal 11. According to the example,
the circumferential extension of segments 28, 29 is a multiple
of their width. The projections are thus of box-shaped design.
Bevels 24 and vertical wall areas 25 end at the same distance
from the main axis M of the bucket, where areas 30 delimiting
bevel 24 on the side are inclined towards the periphery of the
lid. A closable spout, which is located at about one-quarter
the diameter of the bucket, is also located in the central area
CA 02404876 2002-10-O1
17
26 of the lid.
As shown in the stacking diagram in Fig. 5, the bottom edge of
snap edge 7 of the lid rests on sliding bevel 17, and bottom
edge 35 of sealing rib 20 on horizontal leg 31 of groove 34
holding seal 11. The bottom edge of box-shaped projection 32
can alternatively or additionally rest on the top edge of the
projection of the lid below.
CA 02404876 2005-09-09
18
Gu/mk
February 5, 2001
PCT/DE 01/00484
Jokey Plastik Gummersbach GmbH
51645 Gummersbach
Plastic container with snap lid
Zist of reference numbers
1 Bucket
2 Lid
3 Outer wall
4 Top edge
Collar
6, 7 Snap edge
8 Outer flank
9 Rib
Flank
11 Seal
12a, 11a Sealing regions
12 Vertical section
13 Bevel
14 Cavity
Bevel
16 Reinforcing edge
17 Sliding bevel
18 Shoulder
19 Tamper-proof seal
Sealing rib
21 Indentation
22 Ridge
24 Bevel
23 Edge
CA 02404876 2002-10-O1
19
25 Wall
25 Area
27 Outer wall
28, 29 Segment
30 Area
31 Horizontal leg
32 Bottom edge
33 Recess
34 Groove
35 Bottom edge
36, 37, 38 Rib
