ES2236196T3 - PLASTIC CONTAINER WITH AN ELASTIC LACE COVER. - Google Patents

Abstract

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 has an area that comes into 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. The object of the invention is to design a plastic container with snap lid, which reliably fulfils special demands on leak-proofness. To this end, 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 cooperation areas of the lid and of the container generating the sealing region. The seal can be located in a circumferential groove in the lid. The seal can have two sealing regions spaced apart that are at different angles to the main axis of the container, where the container and/or lid has areas that provide for tight contact on the sealing regions. The container and the seal are provided with elevations in the form of ribs which come into contact when the lid is on. At the height of the seal, the outer flank of the groove on the lid laterally contacts the outside of the container.

Description

Plastic container with a lace lid elastic.

The invention relates to a container of injection molded plastic with elastic lace lid and with retainer arranged in the upper marginal area of the container for the retention housing of one retention edge with the other characteristics of the preamble of claim 1.

Such plastic containers are used for the transport of different products, especially also in the industry sector and in the food products sector and have given in this case good result many times. However, in the transport of liquids or low pasty materials exists, such as previously, the problem of a sufficient tightness of the plastic containers This is especially the case during the transport of volatile products or critical products by others reasons, such as in the case of oils, especially mineral oils In these cases, they pose to tightness of the plastic container especially high requirements, which they are not met satisfactorily in the containers of plastic known so far, although it has been tried many times achieve sufficient airtightness through profiling suitable of the edge of the container and the lid. Therefore these products are transported most of the time in containers of sheet metal.

Document DE 44 22 534 A1 describes a plastic container of an injection molten edge of the type indicated at the beginning, with elastic lace cover, in which during the fixing of the cover, it is inserted with its surface inside the opening of the container, so that an edge Surrounding lid is supported with the inner side with the effect of sealing with the vessel wall.

The invention is based on the problem of creating a injection molded plastic container with a lace lid elastic, which meets the special requirements of air tightness.

The problem is solved through a plastic container with elastic lace lid according to the claim 1. In this container, the sealing zone is provided with a surrounding sealing gasket formed integrally in one piece by means of a procedure of injection, which is arranged with a sealing effect, when the lid is placed between the container and the lid, being constituted the sealing gasket by a material of a elasticity higher than that of the lid and / or the container, especially for a rubber material. The seal is formed integrally in a single piece, therefore, in the container which consists of the container and the lid. In this way, the tolerances that may appear in the case of the manual insertion of a seal and a fixation is created of the seal with the lid or the container, of so that also in the case of a force acting, by example when the containers are dropped, the seal is always disposed immovably in the component. The board of shutter is integrally formed in a preferred manner by means of an injection procedure, for example through injection casting, so that the points of adhesion or similar. The injection molding of the gasket shutter can be performed immediately after training of the part of the associated container, so they can be maintained manufacturing and adjustment tolerances especially reduced.

In a more advantageous way, the board of seal is formed integrally in the lid, being able to be dimensioned the width of the sealing gasket greater than the wall thickness of the upper edge of the container, for example approximately 1.5 to 3 times, without being limited to it. The seal may have a seal area that extends essentially horizontal, but it can also be profiled, for example U-shaped or V-shaped. They can be provided one or also two or more different shutter zones, which are they can distinguish, with respect to their support width, which can be in each case linear or flat, the thickness of the material or other properties The shutter zones can be inserted in each case within each other and may be distanced each other radially or axially.

In a more advantageous way, the board of seal is arranged in a slot surrounding the lid, which it is open towards the edge of the container, and the sealing gasket over the entire width of the groove and being additionally secured against displacement side. The side flanks of the groove can surround the container on the edge on the inner side and on the outer side, in a preferred way in each case they are reduced lateral play or no side play, without having to be limited to it.

The seal presents in a way preferred two adjacent shutter zones, which have different inclination and can be supported with shutter effect on areas of the edge of the container with different inclination. Board shutter can present for this purpose especially a section U-shaped or V-shaped or L-shaped cross section, the shutter zones may be arranged in areas of the seal which are directed towards each other, but, if necessary, also in a convex area. The shutter zones of different inclination can be made in one piece or  of several pieces together, that is, not to be made in a way continuous, being integrally formed in one piece one or several, preferably all partial parts of the gasket sealing in the container and / or the lid.

In a preferred manner, the seal it presents essentially an area in the closed state of the container horizontal, which can be placed with a shutter effect on the upper edge of the edge of the container, and a radially area internal, which is preferably inclined and can be supported with a sealing effect on the inner side of the upper edge of the container. The area of the sealing gasket that is inclined down can be extended, when the container is formed, essentially vertical or obliquely inclined, being able to form the two Sealing joint areas an angle of 90º - 135º or more. The area of the oblique inclined sealing gasket ends, so both, also in an obliquely placed area and extends with essentially linear preference. The length of the oblique zone of the seal can have approximately the length of the horizontal area of the seal, for example from a quarter to the total length of it or more. Of one in a preferred manner, the edge of the container also has a horizontal shutter zone and a radially bevel or chamfer internal for the support of the seal area that is placed vertically or obliquely, but others are also possible configurations In this way, also in the case of action lateral force on the sealing joint areas, forces can always be absorbed in the area of the gasket of flexible shutter, so that a high level of exit security.

The seal may have one or more surrounding sealing ribs, which project to the edge of the container, which are supported with an area of the container, especially the upper edge of the container. The height of the sealing ribs may be less than wall thickness of the container. The edge of the container can be flat or it can be provided with one or several surrounding ribs, which may set up a slot in pairs, which fit at least partially one or several sealing ribs. The ribs Shutter may be provided in different areas of the sealing gasket, for example in a horizontal zone and / or a zone  which is arranged vertically or inclined. The sections crossings of the sealing ribs with the grooves surrounding the edge of the container do not have to match necessarily, as long as a shutter effect is achieved enough. The cross section of the groove of the edge of the container may be equal to or less than the cross section of the sealing rib, so that the groove is fully filled by flexible sealing rib when the lid is placed. The cross section of the groove can also be greater than that of lace sealing ribs and in this case can counter, for example, a lateral displacement of  the same, for which a single rib can serve. The rib or edge that delimits the groove can also be supported with sealing effect on the seal. Given the case, they can also be provided on the edge of the container one or several ribs, which fit into recesses provided for this purpose in the flexible seal. In particular, the structures that support each other of the seal and the edge of the container may be incompatible or not complementary, of so that the seals of the seal are not placed opposite the cavities of the edge of the container but that are supported with elevations of the edge of the container, for example in the area of the flanks of the same. In this way, it is a not congruent teeth, which guarantees a high and reliable tightness. The height of the sealing ribs is in this case a preferred way less than the wall thickness of the container, for example between ½ and 1/5 thereof or less, without being limited to it.

The edge of the container may be provided also with at least one rib for sealing the container, which is supported with a flat area of the gasket obturation. The rib has a preferred height such that, when the lid is placed, the rib fits into the less partially or to an essentially complete extent in the sealing gasket, which has a higher elasticity than container material

The seal presents in a way a height or thickness is preferred such that, when a force on the container or lid in the area of the gasket shutter, at the same time serves as the absorption zone of impacts, so that with certain actions of the force, deformation of the most rigid areas of the lid or of the container.

The area of the seal that extends horizontal and / or vertical or inclined can be placed on each case, when the lid is placed, flat, in a preferred way leaning with the entire surface, that is, over the entire radial extension of the same, in the corresponding support areas of the container or of the lid, to hermetically close the container.

In the area of the outer wall of the container, that is adjacent to the upper edge of the container and that descends outwardly, ribs may be formed integrally project outwards, which can be made as ribs surrounding, whose radial extent is less than the thickness of vessel wall These ribs may consist of  the same material as the vessel wall and serve essentially to reduce friction when the lid is placed, having only a subordinate shutter function, which is Especially appreciated by the flexible sealing gasket and compressible On the outer edge of the container may be also placed two or more surrounding ribs of this type. The ribs rest, when the lid is on, of a Preferred game-free way, but without prior tension considerable, so the lid is placed exactly in the area of the seal, or distance with a reduced clearance, without being limited to it.

For the stabilization of the shutter zone, preferably on the outer side, on the edge of the container, on the side of the retainer that is directed towards the upper edge a reinforcement rib is integrally formed from the container which is projected radially. The reinforcement rib extend preferably radially around the container, you can also be divided and may consist of several zones of reinforcement. In an alternative or additional way, on the side of the retainer, which is directed towards the upper edge of the container or also on the remote side of the retainer may be arranged several other reinforcement ribs. The thickness, that is, the height and / or the width of the reinforcement rib may be placed in the area of half the thickness of the wall of the container, with preference in the area of wall thickness or also above her. By means of the arrangement of the reinforcement rib in the proximity of the flexible seal, the area of Container sealing is especially stabilized. Of one preferred way, the cover rests on the radially external side of the reinforcement rib with or without prior tension, so that  forces acting laterally on the lid are absorbed directly by the reinforcement rib. The radial outer side of the reinforcement rib may have an area for this purpose smooth. The distance between the reinforcement rib and the seals or between these can be designed to fit the edge of lid retention. If necessary, they can also be provided reinforcement ribs on the inner side of the container.

Cap retention is effective in a way more advantageous also of an opening once the container of invariably, that is, that the retention zone and the zone of shutters are not interrupted by any weakening of the material, which serves, for example, as a closure of originality and in which the lid area must be removed or folded down for opening of the container. The retainer can be provided directly in the top edge of the container or at a distance from it for example also on an edge that projects outwards.

The retainer for fixing the lid is arranged in a preferred manner on the outer wall of the container, but if necessary also on the inner side.

In a preferred manner, the lid has a evening chamfer pointing outwards, which can be connected in a lower area of it, preferably in a section essentially vertical The equalization chamfer can be arranged immediately above the reinforcement rib, which  It is provided above the retainer on the outer wall of the container, and can be distanced from it in one measure insignificant. The equalization chamfer can be connected radially outward with the retaining edge of the lid or it you can project beyond it, in a preferred way you extends radially to beyond the projected areas from the vessel wall out.

The upper edge of the deposit has an area surrounding marginal that projects radially outward and that extends downward, in which the integral is formed catch A reinforcement rib formed integrally above of the retainer and pointing outwards may be formed integrally in this case also at the surrounding edge of the container, so that this edge is reinforced equally and / or can be formed integrally above the marginal zone surrounding directly on the vessel wall. Through the marginal area extended downwards, distanced from the wall of the container, the retention zone is decoupled as to the force with respect to the shutter zone.

The surrounding marginal area extended towards below it is supported on the upper edge of the container, that is, the height of the shutter zone or at a distance of some wall thicknesses, for example one or two.

The container presents in a preferred manner a marginal area that extends downward and that projects out, which is arranged under the lid that is placed over the container and extends radially to the lid or also beyond her. This surrounding marginal zone may be formed separately in the wall of the container and can end with the lower edge of the marginal area surrounding the retention edge or it can be distanced from it in height. In one way preferred, this surrounding marginal zone is configured as prolongation of the marginal zone presented by the retainer, that is, as an appendix that extends down and out. In this area can be provided a closure of originality correspondent. The bottom edge of the lid can be seated with without prior tension on this marginal zone or may present a reduced play with respect to this area, in a preferred manner of such that the bottom edge of the lid cannot be grasped manually. This surrounding marginal zone may present a radial narrowing for partial or total edge accommodation bottom of the lid.

The surrounding marginal area (s) may be reinforced by means of ribs that extend vertically, they are placed on the inner side in the area marginal and may be attached to the outer wall of the container. Reinforcement ribs present in a way preferred down a recess or notch, with the that the marginal zone can maintain a certain flexibility and can act as an area of shock absorption.

In a preferred manner, the lid has a surrounding area, which distances vertically and / or radially from the flexible sealing gasket, which is supported, when the lid is placed with a sealing effect on the inside wall of the container. This area of the seal may be constituted by the same material as the lid. The area of sealing can be performed, for example, as a rib that it is projected downward or also as a stepped appendix on the side bottom of the lid and is arranged in a preferred manner, when the lid is placed, above an appendix of the wall of the container. The shutter zone can settle, when the lid is placed, on the appendix, but it can also be distanced from it, in a preferred manner such that, when other containers are stacked or when a force is exerted from the outside, the lower side of the rib or the Appendix of the lid rests on the appendix of the container. Area of the cover can be supported in this case linearly or on a vertical height with sealing effect in an area of the container which extends preferably essentially vertically, of a preferred way at the height of a reinforcing rib or a retaining edge that is disposed on the outer side of the container. To increase the reliability of container closure, may be provided on the inside wall of the container, placed inside, radially with respect to the rib cord-shaped surrounding that is integrally configured on the inner side of the lid, an area that projects beyond from the lower edge of the rib up. To that end, they can be provided projections or ribs distributed in the periphery, in a preferred way this zone may be also configured as surrounding rib. The height of this rib, which prevents a displacement of the rib of the lid, is in a preferred way less than the wall thickness of the container or the rib of the lid, without being limited thereto. The areas of the container that protrude upwards can be distanced to an insignificant extent or can be supported no previous tension laterally in the rib of the lid. The The rib of the lid can be arranged in this case also in the pressure seat between radially internal areas and externally adjacent to the container.

The stepped appendix of the inner wall of the container, which is arranged under the rib or a stepped appendix of the lid or similar, may be arranged approximately at the height of the retainer or a rib of reinforcement or at a distance of one of a few thicknesses of the vessel wall

The lid may present for stabilization of the shutter zone, in a preferred way in the zone radially internal in the immediate proximity of the wall of the container, at least one radially extending projection inward, which can be integrally formed on the side top of the lid. The projection (s) may be configured, for example, in the form of a ring or in the form of a box, for example in the form of a parallelepiped or in the form of a prism, or they can be star-shaped, without them being limited to it. For the stabilization of projections in box shape or ring shape can be provided reinforcement ribs that are arranged inside.

In a more advantageous way, the one or more projections are distanced with their upper side, with preference above the area of the lid that rests with sealing effect on the inner wall of the container, being able to be the projection in the vertical direction practically in the form of dot or line The cross section of the projections can be made, for example, in the form of a triangle or square obliquely, the upper edge may be made and / or the lower edge of the side walls of the projection of descending way with respect to the interior of the container. The radially internal front wall of the projections can be extend vertically or inclined. The projections can be formed integrally in the upper edge of the lid. Of one more preferably, the upper edge of the projections is it can rest under the upper edge of the lid, so that it get another stepped appendix. This avoids a integral formation at the height of the side sealing zone inside the container, which can lead to tensions of the material or modifications of the form, for example, in virtue of retraction processes.

In a more advantageous way, the projections directed towards the center of the lid are configured in such a way which can also be avoided as much as possible or fully joining surfaces that extend vertically with the surrounding sealing rib in its sealing zone, such as in the form of lateral surfaces of the projections or projections of the rib type. To that end, projections may be provided, which extend over a major circumferential zone or in a preferred way an edge radial surrounding on the inner side of the lid. The surfaces sides of the projections can be placed in this case to radial distance from the surrounding sealing zone on the side top of the projections, so that, when considering the lid from the bottom side, a surrounding groove is formed with cross section, for example, approximately in the form of trapezoid or triangle and widenings are formed that are directed inwards. If necessary, also the projections, especially also a surrounding ring-shaped projection, may be reinforced are inner ribs, which end then in a preferred way at a radial distance from the rib shutter or support rib, which rely on the inner wall of the container or can be supported remotely from the sealing zone of this rib in this rib.

The upper side of the projections can be support in this case essentially horizontal on the inner wall of the cover, in a preferred manner with an inclination less than 15 °, for example 5º downwards towards the interior of the container.

The surface of the lid, which blocks the opening of the container, can be arranged at or below the inner area of the seal, in a preferred manner to the height or below the retention edge.

A nozzle of discharge, which is arranged in a preferred manner preferably about a quarter of the diameter of the surface of the lid, whereby a practical manipulation of the container is obtained when a liquid is poured.

The invention is described below by way of example and is explained as an example with the help of the figures. In this case:

Figure 1 shows a partial view of a container according to the invention with lid and other stacked containers in the sectional representation.

Figure 2 shows a detail view of a container with lid according to figure 1.

Figure 3 shows a detail view of a container according to figure 1 in section representation.

Figure 4 shows a top plan view on a container with a lid according to figure 1.

Figure 5 shows a stacked lid scheme according to figure 1.

Figure 1 shows a plastic container 1 injection molded with cap 2 retained fitted, provided a flat area in the upper edge 4, which closes the wall 3 outside of the container. In the upper edge 4 a connection is connected surrounding edge and protruding radially outward, in which a retaining edge 6 is formed integrally out, which is grabbed from below by a retaining edge 7 surrounding the lid with a hook-shaped projection. The areas of the lid and the container, which are coupled to each other with retention effect, they are set essentially horizontal and without rounding the outer edges, so that through the resulting hitch a particularly secure retention is achieved, If necessary, the retaining edges of the container and the lid they can also be tilted out and down, with what The hitch is reinforced.

The area of cover 2, which is associated with the edge upper 4 of the container, it is configured in the form of a groove or well in the form of a channel, leaning laterally on the outer flank 8 of slot 34 on the two surrounding ribs spaced apart vertically The radial extension of the ribs 9 is clearly smaller than the wall thickness of the container, here  about a third of it. Through the upper edge rounded of the rib 9 and the reduced width of the ribs the lid can be easily attached to the container also when the lid rests laterally narrowly on the edge of the container The ribs 9 are arranged here to the height of section 12 of the seal, being able to lean the lid, also when these ribs are missing, with a reduced pre-tension or virtually no pre-tension height in the outer wall of the container.

At the bottom of the horizontal slot of the lid and of the flank 10 adjacent radially inside is molded by injection in one piece a seal of a material of elastic and compressible rubber. For the improvement of the union of material, the bottom of the groove as well as the support area of the rubber sealing gasket are equipped here with elevations and congruent cavities. The area of the seal 12 that is associated to the inner flank of the slot 10 is arranged inclined with respect to the vertical, here at an angle of approximately 20º, being able to adopt the angle also values between 5th and 45th, without being limited to it. The inclined section 12 of the seal 11 is supported, in the coupled state elastically from the cover, in the chamfer 13 descending inwards, which connects on the inner side in the upper edge of the container 4 (see also figures 2, 3), whose inclination corresponds to the inclination of the support surface of the section 12 of the seal, without being limited thereto. Through this special configuration of the seal, the container is sealed tightly also in the case that there are strong repercussions of force on the container edge. Also the section of the lid, which surrounds the section 12 of the seal radially on the side inside, it is made beveled.

The surrounding edge 5 of the container is supported at the height of the upper edge 4, so that the cavity 14 bounded by the edge 5 extends to the proximity of the upper edge, that is, up to about a thickness of wall. The upper edge area 4 of the container is configured in this way also as a U-shaped surrounding profile.

The essentially vertical arm of the edge upper U-shaped 4 passes out to a chamfer 15 with a angle of approximately 30º with respect to the horizontal, with what that a step-shaped appendix is formed. Under this appendix integrally formed the retaining edge 6, being formed integrally between the retaining edge and the appendix, here at the height of the appendix, a reinforcing edge 16 radially surrounding, which ends in this example out at the height of the retaining edge 6 and having a corresponding width to this edge, that is, a vertical extension. The bottom edge of the reinforcing edge 16 is configured according to the edge of the retention edge 6, so that the retention edge 7 of the lid can also fit in the slot that is arranged between edges 6 and 16, to which end also the upper edge edge Retention 6 descends tilted out. The edge of the lid it is supported in this way, in the fully embedded state, in the outer edge of retaining edge 6 and reinforcement edge 16 as well as in the two ribs 9, an interstitium being provided reduced between chamfer 15 and chamfer equalization 17 of the cover that is arranged above that chamfer. The chamfer of equalization 17 may also be arranged outside the edge lower edge of the lid surrounding the upper edge of the container, so that a rib is configured that is projects down towards chamfer 15, which can be place, if necessary, also on chamfer 15 or on a section that extends essentially horizontal.

Surrounding edge 5 presents below the edge of retention a surrounding stepped appendix 18, which is projected from the retaining edge 7 to beyond the outer edge of the cover 2, the retaining edge 7 being able to settle on the stepped appendix 18 under previous tension or may be also provided a gap between the retaining edge and the stepped appendix The stepped appendix 18 presents a closure of originality 19, after whose removal, the edge of retention 7 is manually grabbed from below and can be removed the lid Several breakable tabs may also be provided. arranged adjacent to each other or extending over a greater periphery of the vessel. If necessary, the closure of originality can also be placed on the retaining edge 7. It should be noted that in a preferred way, the lid area it does not present any considerable weakening of the material between the groove that receives the seal and the edge of retention, so that between the retention joint and the gasket of seal 11 or the area of the lid that is arranged inside of the container 1 there is high stability and, therefore, also a high tightness.

On the inner side with respect to the gasket of sealing 11, the cover has a sealing rib surrounding 20, which only rests on a partial area of its height with sealing effect on the inside wall of the container, forming the sealing zone in this example the lower end of the rib, which is planned approximately at the height of the reinforcing edge 16 or the retaining edge. The rib 20 that projects essentially vertically down is arranged at the height of an appendix 21 of the inner wall of the container, which projects inwards and is distanced in this case to an insignificant extent vertically from this appendix. When a reduced vertical pressure is applied on the cover, the rib 20 is supported on the appendix 21. If the function sealing of the rib is not necessary, then they can individual projections of the type of cord directed down. Appendix 21 is delimited towards inside by a surrounding edge 22, instead they can also individual projections are planned, projecting edge 22 on the lower edge of the rib 20 and preventing a movement directed into the rib 20. The rib 20 can also be received between the edge 22 and the area of the adjacent outer wall of the vessel in a pressure seat. The sealing zone of the rib 20 is configured such that (see figure 2) the rib 20 is slightly inclined towards outside and is sized in such a way that, with the cover removed, its lower edge 35 rests radially outside the wall inside of the container The thickness of the lower edge corresponds here approximately to the thickness of the rib, in a more preferred is greater than ¼ of it, ending here so slightly tapered This is always achieved when the cover is placed, a support under radial pre-tension with the inner wall of the container. The ledge, when the lid is removed, is here less than the thickness of the rib, and is approximately ¼ of the thickness of the lower edge.

In the rib 20 above the area of shutter is integrally formed radially on the side inside a surrounding edge 23, which falls to a degree insignificant inward, from which they are formed integrally by chamfer segments 24 directed inwards or essentially vertical wall areas 25 in places of width enlarged edge, which pass to the horizontal area of the lid 26. Zone 26 is arranged below retaining edge 6, being dimensioned its outer diameter, as shown, of such so that a stack of containers is possible. In this way, projections are formed with cross section in the form of triangle, which are integrally formed in a groove shape trapezoidal open down.

The outer wall 3 of the container has, for enable enhanced force transmission, with a capacity Simultaneous stacking of containers without lid ones inside others, a well-known outward inclination less than 3º, in a preferred way of 2nd, being also possible smaller inclinations. For the rest, to be able to absorb better the forces when the containers are stacked with a lid in the area marginal, the distance between the side of the wall 25 of the projections, which is directed towards the center of the container, and the opposite outer wall of the container 26 is sized with a reduced play only, for example with a distance less than 2 mm, preferably 1 mm.

As deduced from the representations enlarged according to figures 2 and 3, the upper edge 4 of the edge of the container is provided with two surrounding ribs 36, which fit the teeth on the bottom side of the gasket obturation 11, leaning the ribs 37, which project towards below, toothed the sealing gasket partially with the ribs 33 of the upper edge of the container, for example in its flank area, which prevents lateral displacement of the ribs 37, resting partially next to the ribs 33 in the groove formed between them or outside the themselves butt from the edge of the container 4. By means of this incongruous configuration of the two structures you get a high tightness of the container.

As it follows, otherwise, from the figure, in the cavity 14 reinforcement ribs 38 are provided vertical in cavity 4 and perpendicular to the outer wall, that have recesses 33 open down, being arranged the vertex of the recess displaced towards the wall outside of the container

As follows from Figure 4, the edge surrounding 23 of the lid, which is arranged on the inner side of the wall of the container 3, is provided with segments 28, 29 of different radial width, resulting in a reinforcement profile effective, to absorb forces on the sealing zone of rib 20 or seal gasket 11. Extension circumferential of zones 28, 29 is, according to the example, a multiple of its width. The projections are set, so so much, in the form of a box. Chamfers 24 and vertical areas of the wall 25 ends at the same distance from the main axis of the container, extending the zones 30 that delimit laterally the chamfer 24 inclined with respect to the periphery of the lid. In the central area 26 of the lid is otherwise arranged dump that can be closed, which is arranged approximately about a quarter of the diameter of the container.

As deduced from the scheme of stacking according to figure 5, the bottom edge of the edge of cover retention 7 sits on the equalization chamfer 17 and the bottom edge 35 of the sealing rib 20 sits on the horizontal arm 31 of the slot 34 that receives the shutter 11. Alternatively or additionally, also the bottom edge of the box-shaped projection 32 can be settle on the upper edge of the projection of the rapa that It is arranged below.

List of reference signs

one Container 2 Top 3 Wall Exterior 4 Singing higher 5 Edge 6, 7 Retaining edge 8 Flank Exterior 9 Rib 10 Flank eleven meeting shutter 11th Rib of obturation 12 Section vertical 13 Chamfer 14 Cavity fifteen Chamfer 16 Edge reinforcement 17 Chamfer of equalization 18 Appendix staggered 19 Close of originality twenty Rib of obturation twenty-one Appendix 22 Edge 2. 3, 24 Chamfer 25 Wall 26 Zone 27 Wall Exterior 28, 29 Segment 30 Zone 31 Arm horizontal 32 Singing lower 33 Recess 3. 4 Groove 35 Singing lower 36, 37, 38 Rib

Claims (17)

1. Fuel container with elastic snap-on lid and with retainer disposed in the upper marginal area of the container for the retention housing of a retaining edge of the lid, the lid having a surrounding retaining edge and a groove (34) surrounding which receives an upper edge (4) of the container (1) and an area, which is supported with a sealing effect with the upper marginal area of the container, in the form of a surrounding sealing gasket, which is arranged in the groove (34) , characterized in that the sealing gasket is constituted by a material of higher elasticity than that of the container (1) and / or the lid (2), because the sealing gasket (11) is integrally formed by means of a process of Injection molding in a single piece in the lid (2) or in the container (1), and because in the upper area of the container (1), on the outer side a surrounding marginal zone (5) extended downwards is provided, what is supported in the area of the upper edge (4) of the container at the height of the sealing area or at a distance of some thicknesses from the wall of the container, and in which the retainer (6) is integrally formed. 2. Container according to claim 1, characterized in that the sealing gasket has at least two sealing zones with different inclination (11, 12), which can be supported with sealing effect in areas of the edge of the container with different inclination. 3. A container according to claim 2, characterized in that the sealing gasket (11) has a zone (12), which can be supported in an area of the container or of the lid (13) radially internal with respect to the upper edge of the container (4) that descends inclined with respect to the inside of the container. A container according to one of claims 1 to 3, characterized in that the sealing gasket (11) has at least one surrounding sealing rib (37) protruding towards the edge of the container (4), and which can be effectively supported sealing in the upper area of the container (1). 5. A container according to one of claims 1 to 4, characterized in that at least one surrounding rib (36) is disposed in the container (1), opposite the sealing gasket (11), which can be supported on the sealing gasket (eleven). A container according to claim 5, characterized in that the container (1) and the sealing gasket (11) are provided with elevations in the form of ribs (36, 37), which are arranged in each case directed towards each other, because the elevations (36, 37) of the container (1) and the sealing gasket (11) support each other when the lid is in place. A container according to one of claims 1 to 6, characterized in that the bottom of the groove (34), which receives the sealing gasket, and the sealing gasket (11) are provided with congruent elevations and cavities. A container according to one of claims 1 to 7, characterized in that the cover (2) is supported at the height of the sealing gasket (11) with the outer flank (8) of the groove (34) that receives the gasket e sealing, in the area of the upper edge of the container (4) laterally on the outer side of the container. 9. A container according to claim 8, characterized in that ribs (9) projecting outwardly are formed integrally formed in the outer area adjacent to the upper edge of the container (4), the radial extent of which is smaller than the thickness of the container wall. A container according to one of the claims 1 to 9, characterized in that at least one reinforcement rib is formed integrally on the edge of the container (7) directed towards the upper edge of the container (4). 16) that is projected radially. 11. Container according to one of claims 1 to 10, characterized in that the cover (2) has a surrounding area (20) away from the seal (11), which can be supported with a sealing effect on the inner wall of the container. 12. Container according to claim 11, characterized in that the area of the sealing lid is made as a surrounding rib (20), which projects from the lower side of the lid downwards. 13. A container according to claim 12, characterized in that in the inner wall of the container, radially adjacent to the surrounding rib (20), there is provided an area (22) projecting upwardly beyond the lower edge of the rib (20 ). 14. A container according to one of claims 1 to 13, characterized in that the lid (2) has at least one projection (25, 29) formed integrally on the upper side of the lid radially into the inner wall of the container (3). and extending in the direction of the main axis of the container. 15. A container according to claim 14, characterized in that the at least one projection (25, 29) is placed with its upper side vertically at a distance from the area (20) of the lid, which is supported with a sealing effect on the inner wall of the container. 16. A container according to claim 14 or 15, characterized in that the at least one projection is configured as a radially surrounding edge (20) on the inner side of the lid. 17. Container according to claim 16, characterized in that inwardly projected projections (29) are formed in the surrounding edge (20).