EP1268295B1 - Plastic container comprising a locking lid and a sealing rib located inside the container - Google Patents

Abstract

A plastic container with a snap lid and with a snap element is provided on the upper edge region of the container for the lid to snap onto, where the lid has a circumferential sealing web projecting downwards that contacts the inside of the container, where at least one projection that extends in an essentially radial and essentially vertical direction is provided on the lid radially inside the sealing web. To provide a plastic container with snap lid, which fulfils the special demands imposed on leak-proofness, while simultaneously providing high load-bearing capacity, the vertical extension of the area of the projection adjacent to the sealing web is small relative to the total vertical extension of the projection. The inward-facing projection can be located on an inside circumferential edge integrally molded on the sealing web. In addition to the sealing web, another circumferential seal is provided in the region of the top edge of the container.

Description

The invention relates to a plastic container with latchable Cover and arranged at the upper edge region of the container Latch for latching attachment of the lid, wherein the lid a downwardly projecting with the container inside has circumferential sealing web coming to the plant, wherein on the lid radially inwardly of the sealing web at least one projection is provided, located in the essentially in radial and substantially vertical Direction extends, with the vertical extent of each Small area of the projection adjacent the sealing land is against the entire vertical extent of the projection and / or against the vertical extent of a radially inward the projection adjacent and substantially perpendicular to this extending wall area.

Such plastic containers are used to transport different Used goods, especially in the industrial sector and in the food sector, and have many here proven. When transporting liquids or low pastes However, there is still the problem of materials sufficient tightness of the plastic container. This is especially during transport fleeting or for other reasons critical goods, such as oils, especially mineral oils. In these cases are the tightness the plastic container particularly high requirements do not in the known plastic containers be solved satisfactorily, even if tried many times was, by appropriate profiling of the container edge and the Cover to achieve sufficient tightness.

To increase the rigidity of the horizontal lid surface is it is often known, from the encircling lid inner edge to Container main axle, d. H. the through the tank gravity extending container longitudinal axis, directed projections to arrange. Optionally, these projections or a inside of the container surrounding lid edge innseitig with Provided stiffening ribs, which are located on the inside Support the sealing bar. However, it has turned out that not always reliable in this design Tightness of the container can be achieved. This is especially true if for high loads the side walls of the projections or stiffening ribs, e.g. ring-shaped or box-shaped Projections exceed a certain thickness.

From FR 2665 688 is a generic plastic container known with lid, in which the upper edge region of the container crimped to form a catch and the sealing web vertically spaced from the detent in extension of a circumferential inner edge of the lid is arranged.

Furthermore, from EP 600 127A a generic Plastic container with lid known, which is a very deep Receiving for the lid, which at the level of the Container is adapted, being approximately in the edge region of Lid a substantially horizontal collar is provided.

The invention is based on the object, a plastic container to create with latchable lid, which at a high load capacity the special requirements for the tightness enough.

The task is performed by a plastic container with a latched lid in which the sealing area of the Sealing strip approximately at the level of the outer latching edge is arranged or that on the container an external, circumferential stiffening rib is provided and that the Sealing area of the sealing ridge approximately at height of Stiffening rib is arranged. The latching edge of the container is in this case preferably associated with a latching edge of the lid, without material weakening in the container top edge cross lid area passes, so that ensures an effective power transmission is. Preferably, in this case, the sealing web placed to the outside to force the inside of the container to lie, with the Behälterinnenwandung in the investment area substantially perpendicular or slightly behind extends inclined outside. This will be a particularly high Tightness of the lid achieved because the upper edge of the Container at least approximately symmetrical outside of the Latching edge of the lid and inside of the sealing bar is forced, which the container edge in opposite Apply force to directions. The projection can here be designed web-shaped or with spaced side walls, he can also as a stiffening rib of a projection and / or be formed of an inner circumferential edge. The Rib can be considered as extending from the lid to the outside External rib, preferably as from the lid to Be executed inside the container extending inner rib. The radially inwardly adjoining wall area can e.g. the radially inner boundary wall of a box-like projection or an inner circumferential Represent edge. The vertical extension of the Seal land integrally formed areas may be such. be small against the height of the projections or against the height of the inside ribs or side walls of the container interior facing Page. Is thus the height of the inner ribs much smaller as the height of the protrusions, so can the inner ribs in the essentially have a constant height. Preferably however, it corresponds, e.g. the height of the inner ribs on the Tank wall facing away from that of the projections, so that the height of the inner ribs decreases radially outward. The Total height of the projection corresponds to the height of the projection over the radial extent of the same.

The vertical extent of the formed on the sealing web Areas of the projections is thus also small against the height the sealing web, in particular against the below the Anformung extending height. The height of the molding can less than 3/4, e.g. less than 1/2 or less than 1/4 of the Height of the sealing web, and e.g. around Cover wall thickness lie.

Characterized in that the height of the integrally formed on the sealing web or this facing areas of the inner ribs or side walls only comparatively small, can the sealing bar shape with high accuracy and reproducibility, Material and / or shape changes in the field of Sealing web, such as due to binding defects, material shrinkage and the like are reduced to a minimum. It was found that material stresses through the molded vertical ribs or side walls extending vertically over the Beyond molding areas and possibly in the sealing area of the Bridge can extend. By the measure according to the invention the molded projection can be a distance from the highest Tightness causing area of the sealing web spaced be, so that this sealing area substantially is free from Anformungseinflüsse by the projection. Of the Seal web is thus due to the inventive measures over the entire circumference even with great strength of the inner ribs or side walls of the projections very evenly on the Container inner wall, whereby a high density of the container is reached.

The height of the protrusions, e.g. the inner ribs or side walls on the side facing the container wall may be less as 3/4, e.g. 1/2 or 1/4 of the tank center facing Height or the total height or the vertical extent of the radially inward and substantially perpendicular to Be projecting extending wall area. Preferably close the inner ribs or side walls only punctiform to the sealing bar on. Is the projection on the sealing web directly formed, the vertical distance of at the sealing ridge adjacent lower edge of the projection from the sealing region of the sealing web (in particular the Area of greatest sealing effect) 1/4 - 1/2 or more of the height of the projection amount. The sealing area, in particular the area of greatest sealing effect, this can be at height of the projection, e.g. a reinforcing rib or sidewall of a projection, e.g. if the lower edge of the Projection towards the container interior down or the projection is spaced from the sealing web.

According to a particularly preferred embodiment, the at least a projection or the side walls or inner ribs the same of the container inside arranged sealing web radially spaced, so that due to not uniformly distributed over the circumference of the container material accumulations resulting material stresses not immediate transferred to the sealing web. Thus, for example, if annular or box-shaped such as e.g. cuboid or prismatic Projections before, so are the side walls or inner ribs the projections only at their upper and radially inner Pages connected to the lid. It was found that This provides sufficient stability of the projections without disturbing influence on the sealing web can be achieved. The inner ribs may possibly also the inner substantially support horizontal lid area and on the underside of the lid be formed.

The sealing bar can be a linear or flat Have investment area with the container inner wall. The sealing Investment region of the cross-section preferably elongated Seal web is here preferably below the on the Seal web molded areas of the lid such. of the Interior ribs or side walls of the projections provided, especially preferably in the region or at the lower free end of the Sealing web. As a result, the investment area a certain Have flexibility, which is often not sufficient Extent is given when, for. the lid inner surface or the projections with their top on the lower portion of the Seal webs are formed, whereby the flexibility of the Dichtungssteges impaired and also, for. in a stacking from containers absorbed by the projections forces be transferred to the lower portion of the sealing web would, whereby its sealing function are impaired can. The abdichtend to the container inner wall applying investment area can exceed a multiple of the top wall thickness, e.g. extend about 4 times the same, without it to be limited.

The sealing web advantageously extends starting from the molded and radially inward to the lid interior extending lid areas over a vertical height, which corresponds to a multiple of the top wall thickness, preferably 2 to 5 times the top wall thickness or beyond. Preferably, the sealing web is free over this height of radially extending projections. The wall thickness of the Seal web can be in the range of 0.5 to 1.5 of the top wall thickness amount, e.g. roughly correspond to this.

The sealing region of the sealing web, for example the lower end thereof, is preferably in the range of vertical Height of the lid projections, for example in the area half the height or the lower third of the projections.

The cross section of the projections may e.g. triangular or quadrangular be executed, if necessary also obliquely, whereby the upper and / or lower edge of the side walls of the projections or the Inner ribs fall to the interior of the container (preferably with an inclination of <15 °, e.g. approx. 5 °) or horizontally. The radially inner end wall of the projections or Internal ribs can be vertical or inclined.

According to an advantageous embodiment, the at least a protrusion on the top of one of the sealing web radially inwardly extending and inclined to the container interior sloping region be formed. The lead can be designed web or box-shaped.

Preferably, on the sealing web inside a circumferential Formed edge, at the radially inward to the container interior protruding projections are formed. Of the Edge can be tilted down to the inside of the container or in the essentially horizontally, but not limited thereto be. Preferably, the peripheral edge extends in radial Direction over one or more wall thicknesses of the same, e.g. about 2 - 3 wall thicknesses starting from the inside of the sealing bar. Looking at the lid from the bottom This results in a circumferential groove with e.g. approximately trapezoidal or triangular in cross-section and after inside widening. The inner ribs or side walls the projections are thus in the radial direction of the sealing web or the upper lid edge spaced. Thereby, a high rigidity of the lid interior, e.g. for stacking containers, with high density of the container achieved.

The inner stiffening ribs can be used both at several separate protrusions such as e.g. essentially box-shaped Projections as well as in an annular circumferential projection, which forms a channel-shaped lid edge be.

The projections can be formed on the upper edge of the lid be. Advantageously, the top of the projections spaced from or below the sealing area of the lid top edge set, so that a further step sales arises. An Anformung at the height of the sealing area of the container inside, resulting in material stresses or shape changes, e.g. due to shrinking operations, thereby become avoided. The sealing area extends at the Container top edge over a vertical area, so can the Top of the projections also at about the level of the lower Be arranged end of the sealing region. This is true then, if the sealing area only by direct contact surfaces be produced by the lid and bucket, as well a flexible seal is provided.

Preferably, with the lid on immediately below formed a paragraph in the container wall of the sealing web. The sealing bar can with the lid on the Sitting on paragraph, but also so spaced from this be that when piled on other containers or at external force exerting the bottom of the bridge on the Container paragraph supports. The stepped shoulder of the container inner wall, which is arranged below the sealing web of the lid can be roughly at the height of the catch or a reinforcing rib be arranged or at a distance of one or a few Container wall thicknesses.

To increase the reliability of the container closure, can at the container inner wall radially inward to the circumferential Seal web on to over the lower edge of the same be provided upwardly projecting area. This area is preferably formed on the inner container paragraph. For this purpose, individual distributed over the circumference projections or webs may be provided, preferably this is Area also formed as a circumferential rib. The height this rib, which is an inward displacement of the sealing bar prevents the lid is preferably smaller than the wall thickness of the container or of the sealing web, without to be limited to this. The upwardly projecting areas of the container may be slightly spaced or with or without bias on the side of the sealing web of the lid issue. The sealing web of the lid can also be in Press fit between the radially inside and outside adjacent Be arranged container areas.

Preferably, in the region of the upper edge of the container another Sealing arranged between the container and lid. Of the Sealing area can be a seal made of a material higher Have elasticity than that of the lid and bucket, in particular from a rubber material. The seal can be one piece be formed on one of the parts, whereby positional tolerances avoided and also when force, for. in falling Containers, the seal always immovable to the Component is arranged. The seal is preferably through a spraying method, e.g. in injection molding, molded, so that Gluing or the like can be avoided. The seal can also be held only non-positively and / or positively, for. in be inserted an annular groove. The sealing area in the area of Container top edge can also directly through investment areas be formed by the lid and bucket.

Advantageously, the seal is integrally formed on the lid, wherein the width of the seal is greater than the wall thickness of the upper one Container edge can be measured. The seal may have an im have substantially horizontally extending sealing area, There may be one, two or more different sealing areas be provided, which in terms of their investment width, Material thickness or other properties can differ. The sealing areas can merge into each other or spaced apart radially or axially.

The seal preferably has two adjacent sealing areas on, which have a different inclination and areas the container edge with different inclination sealing can be applied. The seal can this particular a U, V or L-shaped cross section or other profiles have, wherein the sealing areas on facing each other Regions of the seal can be arranged, if necessary but also e.g. at a convex area.

Advantageously, the seal in a circumferential, the Container edge surrounding groove of the lid arranged, wherein the seal can extend over the entire width of the groove and thereby additionally secured against lateral displacement is. The container-side inner sealing web can formed as an extension of the inner leg of the groove be.

Preferably, the seal in the closed state of Container on a substantially horizontal area, the sealingly on the upper edge of the container edge can be applied, and a radially inner region, preferably is inclined downwards and to the inside of the upper container edge is sealingly applied. The downward sloping sealing area can essentially stand in a container extend vertically or obliquely, the two Sealing areas an angle of 90 ° -135 ° or more include can. Preferably, the container rim also a horizontal sealing area and a radially inside Bevel or chamfer to create the vertical or obliquely arranged sealing area. This will be also with lateral force on the sealing area Forces always caught in the field of flexible gasket, so that leakage safety is given to a high degree.

The seal may be one or more protruding from the container rim have circumferential sealing webs, which are to invest with a container area, in particular the upper edge of the container, come. The container rim may be flat or with one or more circumferential ribs are provided, which in pairs a groove can form into the one or more sealing webs at least partially intervene. The to each other to the plant upcoming structuring of seal and container edge can also be incompatible, so that surveys of the seal not opposite depressions of the container edge but come to bumps with the container edge, for. in the Flank area of the same. This results in a non-congruent Gearing, which has a high and reliable tightness guaranteed. The height of the sealing webs is in this case preferably smaller than the container wall thickness, e.g. the 1/2 to 1/5 of the same or less, without being limited thereto.

The above statements in the geometry of the seal, the Training of sealing bars, etc. apply accordingly for a sealing area formed on the lid and container, in which so areas of the lid and container immediately to come together.

At the upper edge of the container adjacent and falling outwards Area of the container outer wall can radially to externally projecting webs to be formed, as the circulating Ridges can be designed whose radial extent smaller is as the tank wall thickness. These ribs can be out the same material as the container wall and serve essentially to the friction when placing the Cover, with only a minor sealing function to have. It can also be two or more vertical be spaced circumferential ribs attached. Ribs lie with attached lid preferably free of play but without appreciable bias, causing the lid in the sealing area the container top edge positioned exactly is, or are spaced with little play, without it to be limited.

To stabilize the sealing area is, preferably on the outside, at the container edge on the upper edge of the container facing and / or opposite side of the catch one or a plurality of radially projecting reinforcing rib (s) formed. The Reinforcing rib preferably passes radially around the container around, it can also be subdivided and made up of several amplification areas consist. It can also be on the top of the container facing and the opposite side of the latch depending one or more reinforcing ribs be formed. The strenght, i.e. Height and / or width of the rib can be in Range of wall thickness of the container or above. By the arrangement of the reinforcing rib adjacent to the flexible Seal is the sealing area in the area of the upper edge of the container especially stabilized. Preferably, the Cover on the radially outer side of the reinforcing rib with or without preload, which makes it laterally on the Lid acting forces directly from the reinforcing rib be recorded. The radial outside of the reinforcing rib can have a flat area for this purpose. Of the Distance between reinforcing rib and notch or between this can be designed for locking the latching edge of the lid be. Are the reinforcing ribs directly on the Container wall arranged, so are also by the inner Gasket collected on the vessel wall forces absorbed. The same applies to the latching beach with a sufficient Stiffness of the same.

The detent of the lid is advantageously even after one-time Opening of the container unchanged effective, i. Rest area and sealing area are not due to a material weakening interrupted, which serves as a tamper-evident closure or in which the lid portion partially or completely is to remove or fold over the opening of the container.

Preferably, the cover opening surface covering the container opening, which can serve as a stacking area for containers, in approximately at the level or below the lower edge of the container inside Seal arranged. This allows the Cover inner surface upon application of force thereto, e.g. at a stack of containers, in terms of strength of the sealing web be decoupled as far as possible.

Furthermore, preferably the lid inner surface is approximately at the level or below the outer beach or a radially projecting reinforcing rib arranged. Since the lid also on the outside of the locking edge or of the reinforcing rib is supported, results in lateral but especially with vertical exercise of force on the Cover a uniform force distribution and thus higher Reliability regarding the tightness of the container.

The inside upper container edge can be with a bevelled Be provided with the area of facilitated introduction the sealing bar serves and also as a sealing area may be formed, e.g. to create a flexible seal or immediately a sealing portion of the lid. Of the Angle between the bevelled top edge and the vertical is executed at an acute angle, i. is less than 45 °.

The cover aknn have an outwardly facing Abgleitschräge, to the top of the lid or to a can connect the underlying area of the same. The Sliding slope can be radially outward with the locking edge of the Close or overhang lids, preferably it extends radially to over from the container wall outward protruding areas.

The upper edge of the container preferably has a radial outwardly projecting, pulled down circumferential Edge area on which the catch is formed. One above the catch molded, outwardly facing reinforcing rib can also be formed on the peripheral edge of the container be, whereby this is also reinforced, and / or above the peripheral edge region directly on the container wall. By the drawn down, from the container wall spaced edge area of the locking area is based on power from the sealing area of the sealing web on the inside of the container and decoupled at the upper edge of the container.

Preferably, the downwardly drawn peripheral edge region attached to the upper edge of the container, i. at height the sealing area or at a distance of a few wall thicknesses, e.g. one or two, without being limited thereto.

The container preferably has a radially outwardly projecting, pulled down edge area, the below of the lid placed on the container is arranged and extends radially to the lid or beyond. This peripheral edge area can be attached separately to the container wall be molded and this with the lower edge of the locking edge conclude having circumferential edge region or from this be spaced in height. Preferably, this is circumferential edge region as a continuation of the detent having Edge region formed, i. as down and outward continued paragraph. The lower lid edge can sit with or without preload on this edge area or have a slight play to this what a radial Constriction for partial or complete uptake of Cover lower edge can be provided.

The lid opening obstructing the container opening can open Height or below the inner sealing area, preferably arranged at height or below the latching edge be.

On the lid, a spout may be attached, the preferably about one quarter of the diameter of the lid surface is arranged, resulting in a practical handling of the bucket when pouring a liquid results.

Fig. 1

eine Teilansicht eines erfindungsgemässen Behälters mit Deckel und gestapeltem weiteren Behälter in Schnittdarstellung,

Fig. 2

eine Detailansicht eines Behälters mit Deckel nach Fig. 1,

Fig. 3

eine Detailansicht eines Behälters nach Fig. 1 in Schnittdarstellung.

Fig. 4

eine Draufsicht auf einen Behälter mit Deckel nach Fig. 1,

Fig. 5

ein Stapelschema von Deckeln nach Fig. 1,

Fig. 6

eine Detailansicht eines Behälters mit Deckel nach einer weiteren Ausführungsform,

Fig. 7

ein Stapelschema von Deckeln nach Fig. 6,

Fig. 8

eine Detailansicht eines Deckels nach einer weiteren Ausführungsform,

Fig. 9

eine Detailansicht eines Deckel nach einer Abwandlung des Deckels nach Figur 6.

The invention will be described below by way of example and explained by way of example with reference to FIGS. Show it:

Fig. 1

a partial view of an inventive container with lid and stacked further container in section,

Fig. 2

a detailed view of a container with lid of Fig. 1,

Fig. 3

a detailed view of a container of FIG. 1 in a sectional view.

Fig. 4

a top view of a container with lid of Fig. 1,

Fig. 5

a stacking scheme of lids according to Fig. 1,

Fig. 6

a detailed view of a container with lid according to a further embodiment,

Fig. 7

a stacking scheme of lids according to Fig. 6,

Fig. 8

a detailed view of a lid according to a further embodiment,

Fig. 9

a detailed view of a lid according to a modification of the lid of Figure 6.

Fig. 1 shows an injection-molded plastic bucket 1 with snapped lid 2, wherein the outer wall 3 of the Eimers concluding upper edge 4 a flattened area is provided. At the top 4 closes a circumferential and radially outwardly projecting edge 5, to the an outwardly projecting latching edge 6 is formed, the of a circumferential locking edge 7 of the lid with a hook-shaped Projection is under attack.

The upper edge 4 of the bucket associated with the area of the lid 2 is groove-shaped or channel-shaped, wherein the outer edge 8 of the groove 34 at the two vertically spaced circumferential Ribs 9 of the bucket rests laterally. The radial Extension of the ribs 9 is significantly less than the wall thickness of the bucket, here about one third of the same. By the rounded upper edge of the rib 9 and the small width of the Ribs can also be close to the side of the bucket rim Cover this easily to be pushed onto the bucket. The Ribs 9 are here at the height of the portion 12 of the seal arranged, with the lid even in the absence of these ribs with less or virtually no pretension at this height at the Outer wall of the bucket can rest, which at the same time the Seal is positioned exactly.

On the horizontal groove bottom of the lid and the radially inside adjacent flank 10 is a seal made of an elastic and compressible rubber material integrally molded. Of the the inner groove flank 10 associated sealing region 12 is arranged at an angle to the vertical, here at an angle of approx. 20 °, whereby the angle also assume values between 5 and 45 ° can, without being limited to. The inclined section 12 of the seal 11 is in the snapped condition of the Dekkels at the inside of the bucket top edge 4 subsequent, inwardly sloping slope 13 (see Also Fig. 2,3), whose inclination of the contact surface of the section 12 corresponds to the seal, without being limited thereto to be. By this particular embodiment of the seal the bucket also with strong forces on the bucket edge securely sealed and can also be easily put on become. Also, the lid portion of the section 12 of Seal radially inside surrounds, is chamfered executed.

The outside circumferential edge 5 of the bucket is at the level of Top edge 4 attached, so that the demarcated from the edge 5 Cavity 14 is close to the top edge, d. H. except for about a wall thickness extending. The area of the upper edge 4 of the Pail is thus also as a U-shaped circumferential profile designed. As a result, the lid can be optimally braced and laterally occurring forces are absorbed.

Inboard of the seal 11, the lid has a circumferential Seal web 20 on, the only over a partial area the height sealingly abuts the Eimerinnenwandung, namely in the area of the lower end of the bridge, at about the height of the reinforcing edge 16 and the latching edge is arranged. The essentially vertical after Below projecting rib 20 is at the level of an inwardly projecting Paragraph 21 of the bucket inner wall arranged and here slightly vertically spaced therefrom. At lower vertical pressure on the lid sets the rib 20 to paragraph 21. The paragraph 21 is turned inwards by a encircling edge 22 limited, instead also individual Projections may be provided, wherein the edge 22 over the Lower edge of the rib 20 protrudes and an inwardly directed Movement of the rib 20 prevents. The rib 20 can also be between the edge 22 and the outside adjacent wall portion of the Eimers be recorded in a press fit. The rib 20 is slightly inclined outwards so that the sealing area the rib 20, i. the lower end thereof (see Fig. 2) with the cover removed radially outside the container inner wall to come to rest. The thickness of the lower edge corresponds here about the rib thickness, preferably more than 1/4 of the same, where it runs slightly conical here. This is at always put on a cover under radial prestress achieved with the container inner wall.

At the rib 20 above the sealing area and below the Sealing area in the area of the upper edge of the container is radial inside slightly sloping inwards or formed substantially horizontal peripheral edge 23 (See also Fig. 4), of the segmentwise inwardly directed Bevels 24 or in places of widened margins in the essential vertical wall portions 25 are formed on go over the same height in the horizontal lid portion 26. The wall portions 25 are in this case as part of the projections 25 a in Circumferential direction of the lid alternating with the chamfers 24 formed on the peripheral edge 23. At the rib 20 integrally formed, vertically extending side walls 29 a of Protrusions are thus avoided. Furthermore, by the vertical spacing of the edge 23 or in the absence of edge the top of the projections on the two sealing areas Minimizes impacting material stresses. The area 26 is arranged below the latching edge 6, wherein its outer diameter, as shown, is dimensioned such that a stacking of buckets is possible. This results in projections with triangular cross-section, following a trapezoidal shape are formed below open groove.

The substantially vertical leg of the U-shaped upper edge 4 goes outwards into a chamfer 15, which a step-shaped paragraph is formed. Below this Paragraph is the snap edge 6 is formed, with between snap edge and the paragraph, here at the height of the paragraph, a radially encircling Reinforcement edge 16 is formed, in this Example to the outside at the height of the locking edge 6 concludes and a width corresponding thereto, d. H. vertical extension, having. The lower edge of the reinforcing edge 16 is formed according to the latching edge 6, so that the Rastrand 7 of the lid also in the between the edges 6 and 16 arranged groove can intervene, including the upper edge of the latching edge 6 falls obliquely outwards. The lid edge is thus in fully snapped on the Outer edge of the latching edge 6 and / or the reinforcing edge 16, whereby together with the sealing web 20 of the upper Tank area is subjected to force on both sides. Especially due to the vertical symmetrical application of force results in a very good tightness. For this also carries the U-shaped configuration of the upper tank area at, the side compressible under a clamping force is. Between bevel 15 and arranged above this Sliding slope 17 of the lid can be a small gap be provided.

The peripheral edge 5 has below the locking edge 7 a circumferential step shoulder 18, which from the locking edge 7 on protrudes beyond the outer edge of the lid 2, wherein the Retrand 7 sit on the stepped shoulder 18 under tension can or between the curb and step heel also a gap can be provided. The stepped shoulder 18 has a tamper-evident closure 19 on, after the removal of the rest of the beach 7 manually grabbed from below and the lid are removed can. It should be noted here that preferably the Cover area between the groove receiving the seal and the catching edge has no significant material weakening, so that between the latching connection and the seal 11 or the inside of the bucket 1 arranged portion of the lid a high stability and thus high tightness given is.

The outer wall 3 of the bucket has to enable an improved Power transmission with simultaneous stackability of buckets without a lid into each other a conicity or inclination to the outside of less than 3 °, preferably 2 °, wherein even lower inclinations are possible. Furthermore, it is around the forces of stacked buckets with lid in the edge area better able to catch the distance between the bucket center facing side of the wall 25 of the projections and the opposite outer wall of the bucket 27 with only a small Measure game, z. B. with a distance of less than 2 mm, preferably 1 mm.

As from the enlarged illustrations of FIG. 2 and 3 As can be seen, the top edge 4 of the bucket edge is two circumferential Ribs 36 provided with the teeth on the Attack underside of the seal 11, and / or next to the ribs 36 in the groove formed between these or outside the same tired of the container edge 4 rest. Through this incongruent training of the two structurings becomes one high density of the bucket achieved.

As further shown in the figure, are in the cavity 14 vertical and perpendicular to the outer wall stiffening ribs 38 provided, the downwardly open recesses 33, wherein the apex of the recess for Outside wall of the bucket is offset out.

As is apparent from Fig. 4 is the inside of the bucket wall. 3 arranged circumferential edge 23 of the lid with segments 28, Provided 29 different radial width, resulting in gives an effective stiffening profile to forces on the To catch sealing area of the rib 20 or the seal 11. The circumferential extent of the regions 28, 29 amounts to the example a multiple of their width. The bevels 24 and vertical wall portions 25 terminate at the same distance from the bucket main axis, wherein the bevel 24 side delimiting areas 29a extend obliquely to the lid circumference. The areas 25, 29 and 29a thus limit the projections 25a.

In the central region 26 of the lid is a lockable Arranged pourer, which is about one quarter of the Diameter of the bucket is arranged.

As can be seen from the stacking scheme according to FIG. 5, the Lower edge of the latching edge 7 of the lid on the Abgleitschräge 17 and the lower edge 35 of the sealing web 20 on the horizontal Leg 31 of the seal 11 receiving groove 34th on. Alternatively or additionally, the lower edge 32 of the box-shaped projection 25a on the upper edge of the projection sit on the lid arranged underneath. How out Figures 2 and 6 shows the lower edge of the sealing web the sealing area of maximum sealing effect opposite the container inner wall. The area of the sealing bar on which the peripheral edge 23 (corresponding would be for other molded areas such as directly on the sealing ridge formed projections apply) this can be no or only a minor sealing effect have, if appropriate, but also a significant or high sealing effect.

Fig. 6 shows another embodiment, in which the lid inside projections 49 with substantially vertical Stiffening ribs 46 are provided, which are connected to the outside essentially vertical and essentially horizontal region of the projecting segments 49 connected are and end in front of the circumferential sealing edge 20. Of the Distance to the sealing edge 20 can only be relatively small be, e.g. in the area of the wall thickness of the rib 46 or below. The stiffening ribs can also up to the sealing edge 20, but preferably not linear abut the sealing edge to seal error due avoiding shrinkage, especially not on Height of the sealing contact area of the sealing rib on the Container interior wall, or with a vertical area, whose vertical extent of the stiffening rib at the level of the inside Edge of the ledge. The thus formed Stiffening ribs 46 may also corresponding to an internal be provided circumferential edge of the lid, the not dissected into protruding and recessed areas. The ribs 46 close to the lower edge of the lid portion If necessary, they may also support the lid area 26.

Furthermore, at the container upper edge of the container material existing sealing ribs 41 formed, wherein the Container upper edge 40 receiving groove 34 is made flat. Of course, if necessary, only at the investment area be provided the lid sealing ribs or on Dekkelunterseite and container top edge, wherein the ribs laterally can sit on top of each other. The sealing ribs 41 exist from the container material and are integrally formed. The Container upper edge 40 is here from a radially outer side arranged, circumferential and downwardly projecting web 43 surrounding, which at the radially outwardly projecting circumferential Ribs 9 of the container fits tightly. The groove bottom forming horizontal cover portion 44 extends radially outward over the web 43, so that the Abgleitschräge 17th is made steeper than in the previous embodiments. Between web 43 and Abgleitschräge 17 can Stiffening ribs 45 may be provided.

The radially inward to the sealing area of the container upper edge subsequent areas of lid and Container fall obliquely to the container interior, here with larger Slope of more than 60 °, with lid and container a have little play but also can rest against each other.

Otherwise, the container with lid according to this embodiment the features of the first embodiment to which reference is hereby made.

As can be seen from the stacking scheme of Fig. 7, the Stiffening ribs 46 at the same time the support to the underneath serve lying lid and this line or even punctiform on the top of the internal projections 49th or surrounding edges. In addition, the relies Cover on the lid underneath with the below Rastrandes to under projecting web 47 on the, the Abgleitschräge 17 surrounding circumferential bead 48. The sealing rib 20 is in this case spaced from the adjacent lid, If necessary, it can also be supported on it.

It is understood that the stacking scheme shown also for other embodiments of the container or lid, in particular other embodiments of the sealing area at the upper edge of the container, is feasible.

FIG. 8 shows a further embodiment in which the at least one projection 50 at the top of a from the sealing ridge radially inwardly extending and inclined to the container interior sloping portion 51 is formed. Of the Area 51 represents here a circumferential edge. The projection 50 is executed here web-like, with a variety of webs are integrally formed on the peripheral area. Of the inclined to the container interior sloping portion 51 may also connect directly to the sealing web 20. The radially inward flank of the projection can also be inclined run.

Figure 9 shows a modification of a lid according to the figures 6 and 7 in which the stiffening ribs 46a extend to the Seal web 20 extend and one formed on this Have area whose height is small against the height of the Sealing strip itself.

LIST OF REFERENCE NUMBERS

1

bucket

2

cover

3

outer wall

4

top edge

5

edge

6, 7

Rest edge

8th

outer flank

9

rib

10

flank

11

poetry

11a

sealing rib

12

vertical section

13

slope

14

cavity

15

bevel

16

reinforcing edge

17

Abgleitschräge

18

stepped shoulder

19

tamper-evident closure

20

sealing web

21

paragraph

22, 23

edge

24

bevel

25

wall

25a

head Start

26

cover region

27

outer wall

28, 29

segment

29a

Side wall

30

Area

31

horizontal thigh

32

lower edge

33

recess

34

groove

35

lower edge

36, 37, 38

rib

40

tank top

41

sealing rib

43

web

44

cover region

45, 46

stiffening rib

46a

stiffening rib

47

web

48

bead

49

head Start

50

head Start

51

sloping area

Claims (15)

1. Plastic container (1) with a snap lid (2) and with a snap element (6) provided on the upper edge region of the container for the lid to snap onto, where the lid has a circumferential sealing web (20) projecting downwards that contacts the inside of the container providing a sealing region, where at least one projection (25a, 49, 50) that extends in an essentially radial and essentially vertical direction is provided on the lid radially inside the sealing web, wherein the vertical extension of the area (29, 46) of the projection (25a) adjacent to the sealing web (20) is small relative to the total vertical extension of the projection and/or relative to the vertical extension of a wall area (25) being arranged radially inward adjacent to and substantially perpendicular to the projection, characterised in that the sealing region of the sealing web (20) is arranged roughly level with the outer snap edge (6) or in that the container is provided with an outer, circumferential reinforcing rib (16) and that the sealing region of the sealing web (20) is arranged roughly level with the reinforcing rib (16).
2. Container as per Claim 1, characterised in that the projection (25a) is provided with sidewalls (29a) and/or ribs (45) being spaced from one another, the vertical extension of which adjacent to the sealing web (20) is small relative to their total vertical extension and/or relative to the vertical extension of a wall area (25) being adjacent and radially inward to the projection and extending substantially perpendicular to it.
3. Container as per Claim 1 or 2, characterised in that the projection (25a, 49) is spaced radially apart from the sealing web (20) located on the inside of the container.
4. Container as per one of Claims 1-3, characterised in that the area (23) being integrally moulded on the sealing web (20) is spaced apart from the area (35) of the sealing web (20) that provides the greatest sealing effect.
5. Container as per one of Claims 1-4, characterised in that the sealing region (35) of the sealing web (20) is in the region of the vertical height of the projections (25a).
6. Container as per one of Claims 1-5, characterised in that at least one projection (50) is integrally moulded on the lid at the height of the top side of an area (51) extending radially inwards from the sealing web and sloping down towards the inside of the container.
7. Container as per one of Claims 1-6, characterised in that additionally to the sealing web (20) the lid (2) is provided with a circumferential sealing region being arranged in the region of the top edge (4) of the container.
8. Container as per one of Claims 1-7, characterised in that an additional circumferential sealing region (13) is provided and in that areas (23, 29, 46) of the lid being integrally moulded on the sealing web (20) and extending radially inward are spaced vertically apart from the additional sealing region (13).
9. Container as per one of Claims 1-8, characterised in that an indentation (21) is formed in the inside wall of the container below the sealing web (20), on which the lower, free end of the sealing web 20) can rest.
10. Container as per one of Claims 1-9, charac-terised in that an area (22) projecting upwards beyond the bottom edge of the web (20) is provided on the inside wall of the container, which lies radially inward relative to the circumferential sealing web (20).
11. Container as per one of Claims 1-10, characterised in that at least one radially projecting reinforcing rib (16) is integrally moulded on the container edge in the region of the top edge (14) of the container.
12. Container as per one of Claims 1-11, characterised in that a further sealing region between the top edge of the container and the lid (2) is provided with a circumferential seal (11) made of a material of greater elasticity than that of the container (1) and/or the lid (2).
13. Container as per one of Claims 1-12, characterised in that an area (13) which slopes down towards the inside wall of the container and is at an acute angle to the main axis of the container is provided radially inward on the top edge (4) of the container.
14. Container as per one of Claims 1-13, characterised in that at least one contact surface (9) for lateral contact with the lid, which projects radially outward, is integrally moulded on the outside area adjacent to the top edge (4) of the container.
15. Container as per one of Claims 1-14, characterised in that the outside of the upper region of the container (1) has a downward-facing circumferential collar region (5), which is joined in the region of the top edge (4) of the container.

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