RU2261203C2 - Plastic container with snap-fit closure - Google Patents

Abstract

FIELD: packing equipment, particularly pressure-molded containers.

SUBSTANCE: container has snap-fit closure and snap-fit member located on upper container edge and adapted to connect closure. Closure has peripheral snap-fit edge and peripheral groove for upper container edge receiving. Closure has area brought into tight contact with upper container edge and provided with peripheral sealing structure arranged inside the groove. Sealing structure is formed of material having higher elasticity in comparison with container and/or closure material. Sealing structure is made separately from snap-fit edge and is formed as a single whole by pressure molding on closure or container. Outer side of upper container are has peripheral beam facing downwards and connected to upper container edge at height of sealing structure location or at distance equal to several container wall thicknesses. Sealing structure may have two sealing parts located at different angles to main container axis, wherein container and/or closure have areas adapted to provide tight contact with sealing parts. Container and sealing structure may be provided with fin-like extensions which are brought into contact one to another when closure is put on container. Outer side of the groove at sealing structure height receiving sealing structure of the lid contacts with outer container surface from sides thereof near upper container edge.

EFFECT: increased reliability, leak protection, particularly when container is used to store volatile and other hazardous substances such as oil, for instance mineral oil.

19 cl, 5 dwg

Description

The invention relates to a plastic container made by injection molding, with a snap-on lid and with a snap element provided on the upper edge region of the container for latching on the lid, the lid having a peripheral snap-on edge and a peripheral groove for receiving the upper edge of the container, the lid having the area that comes into tight contact with the upper edge region of the container, and this region has a peripheral seal design located in the groove e.

Plastic containers of this type are used to transport various goods, in particular also in industrial and food fields, and it has been proven that they are very effective for this purpose. However, the transport of liquids or other materials with low viscosity still involves the problem of adequate protection against leakage of plastic containers. This occurs, in particular, when transporting volatile or other types of environmentally hazardous products, such as oils, in particular mineral oils. In these cases, leakage protection of plastic containers is especially necessary, which is not yet satisfactory in known containers, although many attempts have been made to achieve satisfactory leakage protection by making the edges of the container and the lid with an appropriate profile. Therefore, these products are usually transported in metal containers.

DE 4422534 A1 describes in general terms a plastic container made by injection molding, with one edge, with a snap-on lid, while installing the lid, the lid is inserted into the opening of the container with its inner surface, so that the peripheral edge of the lid with its inner side comes into tight contact with container wall.

From DE 19543388 A1, a plastic injection molded container with a snap-on lid and a snap-in element provided on the upper edge region of the container for latching the lid on it is known, the lid having a peripheral snap-in edge and a peripheral groove for receiving the upper edge of the container, moreover, the lid has a region that comes into tight contact with the upper edge region of the container, and this region has a peripheral seal structure located in the groove. This known container also has the aforementioned disadvantages.

An object of the present invention is to provide a plastic container with a snap-on lid that reliably meets leakage protection requirements.

This task is in a plastic injection molded container with a snap-on lid and a snap-on element provided on the upper edge region of the container for latching on the lid, the lid having a peripheral snap-in edge and a peripheral groove for receiving the upper edge of the container, the lid being has a region that comes into tight contact with the upper edge region of the container, and this region has a peripheral seal structure located in the groove, according to the invention is solved in that the seal is made of a more flexible material than the container and / or the lid, and the seal is made separately from the snap edge and is molded integrally by injection molding on the lid or container and in the upper region of the container on the outside is provided a downwardly facing peripheral collar that is attached to the region of the upper edge of the container at the height of the sealing region or at a distance of several container wall thicknesses.

Two sealing areas of the seal, located at different angles to the main axis of the container, are spaced relative to each other.

The seal has an area that can come into contact with an area radially inward relative to the upper edge of the container and tilted down toward the inside of the container.

The seal has at least one peripheral sealing rib protruding towards the edge of the container, which is in close contact with the upper region of the container.

At least one peripheral rib, which may come into contact with the seal, is made on the container opposite to the seal.

The container and the seal are provided with ribs in the form of ribs, which are each located relative to each other so that the protrusions on the container and the seal come into contact when the lid is put on the container.

The base of the groove receiving the seal and the seal are provided with corresponding protrusions and recesses.

At the height of the seal, the outer side of the groove receiving the seal on the lid is laterally in contact with the outside of the container in the region of the upper edge of the container.

The jumpers protruding radially outward, in one piece are molded on the outer region adjacent to the upper edge of the container, while their radial extent is less than the thickness of the walls of the container.

At least one radially protruding reinforcing rib in one piece is molded on the edge of the container on the side of the snap element facing the upper edge of the container.

The upper region of the container has a downwardly facing peripheral region of the flange on the outside, which is attached to the region of the upper edge of the container.

The upper region of the collar of the container has a radially protruding, downwardly facing peripheral region of the collar, on which the snap-in element is molded in one piece.

The lid has a peripheral region spaced from the seal, which is in close contact with the inside of the container.

The sealing region of the lid is made in the form of a peripheral rib protruding downward from the lower side of the lid.

The region protruding upward beyond the lower edge of the rib is located on the inner wall of the container radially inward with respect to the peripheral rib.

The lid is provided with at least one protrusion extending radially inward from the inner wall of the container, molded integrally on the upper side of the lid and extending towards the main axis of the container.

The upper side of at least one protrusion is vertically spaced from the lid area in close contact with the inner wall of the container.

At least one protrusion is made in the form of a radial edge, continuing in a circle around the inner side of the cover.

The inwardly projecting protrusions are molded integrally at the peripheral edge.

According to the invention, the sealing region is provided with an integral molded peripheral seal which is tightly placed between the container and the lid when the lid is in place, the seal being made of a more flexible material than the material of the lid and / or container, more specifically rubber material. The seal is thus molded integrally on a container consisting of a container and a lid. In this way, the gap that may occur during manual insertion of the seal is avoided, and the seal is attached to the lid or container so that even when exposed to external forces, for example, when containers fall, the seal is always stationary on the component. The seal is preferably molded integrally by injection molding, for example injection molding, so that seams or the like can be avoided. The seal can be cast in the same form immediately after molding the corresponding part of the container, so that relatively tolerances can be maintained during production and installation.

The seal is preferably molded integrally on the lid, while the width of the seal may exceed the wall thickness of the upper edge of the container, for example, approximately 1.5-3 times, but not limited to. The seal may have a substantially horizontal sealing region, and may be in the form of, for example, a U or V shape. One, two or even more different sealing regions can be made which differ in their contact width, which can be either linear or flat, differ in the thickness of their materials or other characteristics. Sealing areas may be connected and / or radially or axially separated from each other.

The seal is preferably located in the peripheral groove in the lid, which is open towards the edge of the container, wherein the seal can extend over the entire width of the groove and is thus further protected against lateral movement. The sides of the groove may surround the inner and outer sides of the edge of the container, preferably with little or no lateral clearance, not limited to this.

The seal preferably has two adjacent sealing areas that are located at different angles, the tight contact area of the container edge at different angles. For this, the seal may have a U, V or L-shaped cross section, in particular, or of another shape, while the sealing regions can be placed on the sealing regions that face each other, possibly also, for example, in the convex region. The sealing areas at different angles can be made in the form of one part or several parts, that is, they can have a non-continuous shape, with one or more, or preferably all, of the seal sections being injection molded integrally on the container and / or lid.

When the container is closed, the seal preferably has a substantially horizontal region in tight contact with the upper edge of the container edge and a radial inner region that is preferably inclined downward and in tight contact with the inner side of the upper edge of the container. The downwardly inclined sealing region may extend substantially vertically or at an angle when the container is in an upright position, wherein the two sealing regions can form an angle of 90 to 135 ° or more. The inclined sealing region thus ends in the inclined region and preferably continues in a substantially linear manner. The length of the inclined sealing region may be approximately equal to the length of the horizontal sealing region, for example one fourth of its entire length or higher. The container edge preferably also has a horizontal sealing region and a radial inner bevel or recess for positioning the vertical sealing region or region at an angle. However, other designs are also possible. As a result, forces are always absorbed in the flexible sealing region, even forces acting laterally on the sealing region, so that a high degree of leakage protection is provided.

The seal may have one or more peripheral sealing ribs protruding towards the edge of the container, which are in contact with the area of the container, more specifically with the upper edge of the container. The height of the sealing ribs may be less than the thickness of the walls of the container. The container edge may be flat or provided with one or more peripheral ribs, the pairs of which can form a groove that is at least partially engaged by one or more sealing ribs. The sealing ribs can be made in different areas of the seal, for example on a horizontal and / or vertical region or region at an angle. The sections of the sealing ribs do not have to be the same as the peripheral grooves of the edge of the container until a sufficient sealing effect is achieved. The cross section of the groove of the container edge may be either equal to or smaller than the section of the sealing rib, so that the groove is completely filled with a flexible sealing rib when the lid is in place. The cross section of the groove may also exceed the cross section of the engaging sealing rib and in this case prevent its lateral displacement, for example, this can also be achieved by means of a jumper. The jumper or edge defining the groove may also come into tight contact with the seal. If necessary, one or more ribs can be made at the edge of the container, which engage a recess provided for this purpose in a flexible seal. In particular, the seal structures and the edges of the container that come into contact may be incompatible or incomplete, so that the protrusions on the seal are not opposite the recesses in the edge of the container, but opposite the contact protrusions on the edge of the container, for example in the region of its bevel. This results in mismatched closure that provides high and reliable leakage protection. In this case, the height of the sealing ribs is preferably less than the wall thickness of the container, for example, from 1/2 to 1/5 of the thickness or less, but not limited to.

The edge of the container may also be provided with at least one rib for sealing the container, which comes into contact with the flat region of the seal. This rib is preferably so high that when the lid is on the container, the rib is at least partially or substantially completely secured in a seal that has greater elasticity than the material of the container.

The seal preferably has a height or thickness such that it simultaneously acts as a deformation region when a container or lid is exerted by a force in the sealing region, so that more rigid regions of the lid and container are not deformed by some forces.

To seal the container when the lid is located on it, the horizontal and / or vertical or downwardly inclined seal region can provide flat contact with a partial region or preferably with the entire surface of the region (i.e., over the entire radial extension) of the respective contact regions of the container or lid.

The jumpers protruding radially outward, which can be made in the form of peripheral ribs, the radial extent of which is less than the wall thickness of the container, can be molded in one piece on the inclined outward downward region of the outer wall of the container adjacent to the upper edge of the container. These ribs can be made of the same material as the walls of the container, and, essentially, serve to reduce friction when installing the cover, while they have a secondary sealing function, while the primary function is performed by a flexible and compressible seal. Two or more peripheral ribs of this type can also be provided on the outer edge of the container. When the cap is in place, the ribs are preferably contacted without a gap, as well as without any significant pre-tension, so that the cap is accurately placed in the seal area or the ribs are spaced with a small gap, not limited to this.

In order to stabilize the sealing region, the radially protruding reinforcing rib is molded integrally, preferably externally, on the edge of the container, on the side of the latching element facing the upper edge of the container. The reinforcing rib preferably extends radially around the container. It can also be divided and consists of several reinforcing sections. Alternatively or additionally, one or more reinforcing ribs may be integrally molded on the side of the snap element facing toward or away from the upper edge of the container. The thickness, i.e. the height and / or width, of the reinforcing ribs may be in the region of half the wall thickness of the container, preferably in the region of wall thickness or also higher. The placement of the reinforcing ribs adjacent to the flexible seal and partially stabilizes the sealing region of the container. The cap is preferably in contact with the radial outer side of the reinforcing rib with or without pre-tensioning, so that the forces acting on the side of the cap are absorbed directly by the reinforcing rib. For this purpose, the radial outer side of the reinforcing rib may have a flat region. The space between the reinforcing rib and the snap element can be made to receive the snap-on edge of the lid. If necessary, reinforcing ribs can also be made on the inside of the container.

Preferably, the snap-on connection of the lid is also effective immediately after opening the container, that is, the latch region and the sealing region are not separated from each other by a region of thinner material that serves to seal against unauthorized opening, for example, and in which the region of the lid must be partially or completely removed or bent to open the container. The snap element can be made directly on the upper edge of the container or at a certain distance from it, for example, also on the protruding outward edge. The snap-on element for attaching the lid is preferably made on the outer wall of the container or also on the inner wall, if appropriate.

The lid preferably has an outwardly sloping bevel that can be connected to the upper edge of the lid or the area below it, preferably in a substantially vertical region. The sliding bevel can be located directly above the reinforcing rib provided above the snap element on the outer wall of the container and at a small distance from it. The slanting bevel may be radially aligned with or extend beyond the latching edge of the lid on the outside, although it preferably extends radially beyond regions protruding from the container wall.

The upper edge of the container preferably has a peripheral flange region extending radially outward and facing downward, on which the snap-on element is molded integrally. In this case, the reinforcing rib, integrally molded over the snap element and facing down, can also be integrally molded on the peripheral collar of the container, thus also reinforcing it, and / or over the region of the peripheral collar directly on the wall of the container. Due to the downwardly facing flange region, which is spaced from the container wall, the latching region is separated from the sealing region in the sense of the forces acting on them.

The downwardly facing peripheral region of the collar is preferably connected to the upper edge of the container, that is, at the height of the sealing region or at a distance of several wall thicknesses, for example, one or two wall thicknesses, not limited to this.

The container preferably has a shoulder region extending radially outward and facing down, which is located under the lid when the lid is on the container, and extends radially to the lid or beyond. This peripheral region of the collar can be molded in one piece on the container wall separately and in this case it can be at the same level with the lower edge of the peripheral region of the collar with a snap edge or can be spaced from it in terms of height. This peripheral region of the collar is preferably made in the form of a continuous region of the collar receiving the snap element, that is, in the form of a shoulder extending downward and to the outside.

A suitable closure assembly for protection against tampering can be made in this area. The lower edge of the lid can be mounted on this area of the shoulder with or without pre-tensioning, or has some clearance with respect to it, preferably so that the lower edge of the lid cannot be reached manually. This peripheral region of the shoulder may have a radial narrowing for partial or complete reception of the lower edge of the lid.

The peripheral region or regions of the shoulder may be hardened by means of vertical ribs, which may be located on the inside of the shoulder region and connected to the outer wall of the container. The reinforcing ribs preferably have a recess or groove at the bottom, due to which the shoulder region retains a certain degree of flexibility and can act as a deformation region.

The lid preferably has a peripheral region that is spaced vertically and / or radially from the flexible seal, and is in close contact with the inner wall of the container when the lid is in place. This sealing region may be made of the same material as the cover. The sealing region may be in the form of a protruding rib or also in the form of a shoulder on the underside of the lid, for example, and is preferably located above the recess in the wall of the container when the lid is in place. When the lid is in place, the sealing region can be located on the recess or can be removed from it preferably so that the bottom side of the rib or shoulder of the lid is located on the recess of the container when additional containers are stacked upward, or when external force is applied. In this case, the lid region can be tightly contacted, preferably with the substantially vertical region of the container, in a linear manner or over the entire vertical height, preferably at the height of a reinforcing rib or snap-in edge formed on the outside of the container.

In order to increase the reliability of the container seal, the region protruding upward from the lower edge of the rib can be made on the inner wall of the container, which is located radially inside relative to the rib, such as a jumper or a peripheral rib, molded in one piece on the inner side of the lid. For this, separate protrusions or jumpers may be provided, which are arranged in a circle. This region is preferably also made in the form of a peripheral rib. The height of this rib, which prevents displacement within the rib of the lid, is preferably less than the wall thickness of the container or the rib of the lid, not limited to this. The upwardly extending regions of the container may be slightly spaced apart or may come into contact with the side of the edge of the lid with or without pre-tensioning. In this case, the edge of the lid can also be installed by pressing between the radial adjacent areas of the container on the inner side and the outer side.

The shoulder of the inner wall of the container, which is located under the rib or shoulder of the lid or the like, can be located approximately at the height of the snap element or reinforcing ribs or at a distance of one or more wall thicknesses of the container.

In order to stabilize the sealing region, the lid can preferably be provided directly on the radial inner region of the container wall with at least one radial inner protrusion, which can be molded integrally on the upper side of the lid. The protrusion or protrusions may be annular, box-type (for example, cubic or prismatic) or in the form of jumpers, not limited to this. To stabilize the box-shaped or annular protrusions, internal reinforcing ribs can be made.

The upper side of the protrusion (s) is preferably spaced from the region of the lid, preferably above it, which is in close contact with the inside of the container, and the contact point in the vertical direction can be virtually point or linear. The cross section of the protrusions may be in the form of a beveled triangle or rectangle, while the upper and / or lower edge of the side walls of the protrusions may be inclined downward towards the inside of the container. The radial inner end wall of the protrusions may be vertical or angled. The protrusions can be molded in one piece at the top edge of the lid. The upper edge of the protrusions is preferably located below the upper edge of the lid, thereby forming another shoulder. In this case, one-piece molding at the height of the sealing region on the inside of the container, which can lead to material stress or deformation, for example, due to shrinkage processes, is avoided.

The protrusions facing the center of the lid are preferably designed so that vertically extending connecting surfaces with a peripheral sealing rib in the sealing region can be almost completely or completely avoided, such as, for example, side surfaces on protrusions or protrusions such as jumpers. To this end, protrusions extending over a relatively large portion of the periphery or preferably at a radial peripheral edge on the inside of the lid may be provided. In this case, the lateral surfaces of the protrusions can be located at a certain radial distance from the peripheral sealing region on the upper side of the protrusions, so that if you look at the cover from below, you get a peripheral groove, for example, approximately a trapezoidal or triangular section and facing wider areas. These protrusions, in particular also an annular peripheral protrusion, can also possibly be reinforced with inner ribs, which then preferably terminate at a certain radial distance from the sealing or supporting ribs in contact with the inner wall of the container or abut against it at some distance from the sealing region of this ribs.

In this case, the upper side of the protrusions can contact the upper edge of the lid essentially horizontally, preferably at an angle downward of less than 15 °, for example 5 °, towards the inside of the container.

The surface of the lid blocking the opening of the container may be located flush with the inner sealing region or lower, preferably flush with the snap-in edge or lower.

A pouring spout may be mounted on the lid, which is preferably located on approximately one fourth of the diameter of the surface of the lid, thereby providing practical handling of the container when pouring liquid.

An example of the invention is described below and explained on the basis of the drawings.

In the drawings:

Figure 1 is a partial view in section of a container with a lid according to the invention, with another container placed on top,

Figure 2 is a detailed view of the container with a lid of figure 1,

Figure 3 is a detailed sectional view of the container of Figure 1,

Figure 4 is a top view of the container with a lid of figure 1,

figure 5 is a view of a stack of caps in figure 1.

Figure 1 shows a plastic container 1, made by injection molding with a lid 2 latched on it, while the flat area is provided on the upper edge 4 with the outer wall 3 of the container. The upper edge 4 is connected to a peripheral, radially protruding shoulder 5, on which the snap-in edge 6 protruding outward is integrally molded, which is engaged from below by the peripheral snap-on edge 7 of the lid with a curved protrusion. The areas of the lid and container, which are joined together, are substantially horizontal and without rounded outer edges, so that a particularly reliable snap-on connection is provided by the obtained locking connection. The snap-on edges of the container and lid may also be angled down towards the outside, thereby strengthening the locking connection.

The area of the lid 2, connected to the upper edge 4 of the container, is made in the form of a groove or channel, while the outer side 8 of the groove 34 is in lateral contact with two vertically spaced peripheral ribs 9 of the container. The radial length of the ribs 9 is significantly less than the wall thickness of the container, approximately one third in this case. Due to the rounded upper edge of the ribs 9 and the small width of the ribs, the lid can be easily mounted on the container even with a very tight fit relative to the edge of the container. Here, the ribs 9 are located at the height of the sealing portion 12, while the lid can rest on the outer wall of the container at this height with little or no pretension even in the absence of these ribs.

A seal made of elastic and compressible rubber material is injection molded in one piece on the horizontal base of the groove in the lid and on the radial adjacent inner side side 10. To improve the connection of the material, the groove base and the contact area of the rubber seal are provided with corresponding protrusions and recesses . The sealing region 12, connected to the side 10 of the groove, is located at an angle to the vertical, here at an angle of approximately 20 °, while the angle can also be between 5 and 45 °, but not limited to. When the cover is snapped on, the section 12 at the angle of the seal 11 abuts against the downward inclined bevel 13 adjacent to the inner side of the upper edge 4 of the container (see also FIGS. 2, 3), the inclination of which corresponds to the inclination of the contact region of the sealing section 12, not limited to this. Due to this special design of the seal, the container is sealed reliably even when a large force is applied to the edge of the container. The cap portion surrounding the seal portion 12 on the inside also has a beveled structure.

The peripheral collar 5 of the container is connected at the height of the upper edge 4, so that the cavity 14 bounded by the collar 5 extends upward to the upper edge, that is, a distance approximately equal to the wall thickness. The region of the upper edge 4 of the container, therefore, also has a U-shaped peripheral shape.

Essentially, the vertical protrusion of the U-shaped upper edge 4 extends towards the outer side to the bevel 15 with an angle of approximately 30 ° to the horizontal plane, thereby forming a stepped shoulder. The snap edge 6 is molded integrally under this shoulder, the radial, peripheral reinforcing edge 16 being molded integrally between the snap edge and the shoulder here at the height of the shoulder, which in this example is aligned toward the outside of the snap edge 6 and has corresponding width, i.e. vertical extent. The lower edge of the reinforcing edge 16 is made to correspond to the lower edge of the snap edge 6, so that the snap edge of the lid 7 can also engage the groove located between the edges 6 and 16, to the end of which the upper edge of the snap edge 6 is also inclined downward outward. When fully latched, the edge of the lid thus abuts against the outer edge of the latching edge 6, the reinforcing edge 16 and two ribs 9, while a small gap is left between the bevel 15 and the sliding bevel 17 of the lid located above it. The sliding bevel 17 can also be located above the lower edge of the rim of the lid surrounding the upper edge of the container, so that a jumper is formed that protrudes downward towards the bevel 15, which, possibly, can also rest on the bevel 15 or its essentially horizontal portion.

The peripheral shoulder 5 has a peripheral shoulder 18 under the snap edge 1, which protrudes from the snap edge 7 beyond the outer edge of the cover 2, while the snap edge 7 can rest on the shoulder 18 under the action of pre-tension, or some gap can be left between the snap edge and the shoulder. The shoulder 18 has a closure assembly 19 that protects against unauthorized opening, after removal of which the snap-on edge 7 can be grabbed manually from below and the cover removed. It can also be provided with several reeds that protect against unauthorized opening, adjacent to a fairly large portion of the periphery of the container or continuing along it. If necessary, the anti-tamper closure assembly can also be attached to the snap-in edge 7. It is important to mention here that the area of the lid between the groove receiving the seal and the snap-in edge preferably does not have any significant thinning of the material, so that high stability is ensured. and thus, high leakage protection between the snap joint and the seal 11 or the area of the lid located inside the container 1.

The lid has a peripheral sealing rib 20 on the inner side relative to the seal 11, which only tightly contacts the inner wall of the container along part of its height, the sealing region in this example being formed by the lower edge of the rib, which is provided approximately at the height of the reinforcing edge 16 or snap-on edge. The rib 20, protruding essentially vertically downward, is located at the height of the protruding inward shoulder 21 of the inner wall of the container and at a small vertical distance from it. When a small vertical pressure is applied to the cover, the rib 20 abuts against the recess 21. If the sealing effect of this rib is insignificant, it is also possible to provide separate downward-facing protrusions such as jumpers. The recess 21 is limited on the inner side by a peripheral tide 22, at the place of which individual protrusions can also be made, while the tide 22 continues above the lower edge of the rib 20 and prevents the internal movement of the rib 20. The rib 20 can also fit, with pressure, between the tide 22 and adjacent area of the outer wall of the container. The sealing region of the rib 20 is formed therein (see FIG. 2) and the rib 20 is located at a small angle to the outside and is sized such that its lower edge 35 will lean radially outward on the inner wall of the container when the lid is removed. In this case, the thickness of the lower edge approximately corresponds to the thickness of the rib, preferably more than 1/4 of this thickness, where it is slightly narrowed. As a result, contact with radial pretension is successively achieved with the inner wall of the container when the lid is located on it. The protrusion in this place, when the lid is removed, is less than the thickness of the rib and is approximately 1/4 of the thickness of the lower edge.

The peripheral inner edge 23, slightly inclined downward inward, is integrally molded on the rib 20 above the sealing region, on which the bevels 24 or, in places with a wider edge, face the substantially vertical wall regions 25 integrally molded as segments that go into the horizontal region 26 of the cover. The area 26 is located below the snap edge 6, while it has an outer diameter such as shown that it is possible to stack containers in a stack. This leads to protrusions with a triangular cross section, which are molded in one piece on a trapezoidal groove open towards the bottom.

In order to allow an improved transmission of forces and at the same time composing containers without lids into each other, the outer wall 3 of the container has a narrowing or an angle to the outside of less than 3 °, preferably 2 °, while smaller angles are also possible. In order to provide better absorption capacity in the edge region of the forces arising from stacking containers with lids, a distance is further provided between the side of the wall 25 of the protrusion facing the center of the container and the opposite outer wall of the container 27 to allow only a small gap, for example with a distance less than 2 mm, preferably 1 mm.

As shown in enlarged views in FIGS. 2 and 3, the upper edge 4 of the container collar is provided with two peripheral ribs 36 that engage the teeth on the lower side of the seal 11, while some of the downward facing ribs 37 of the seal teeth come into contact with the ribs 36 on the upper the edge of the container, for example in their lateral region, thereby preventing lateral displacement of the ribs 37, and some contact next to the ribs 36 in the groove formed between them, or from its outer side on the edge 4 of the container. This inappropriate design of the two structures provides better leakage protection of the container.

As additionally shown in the drawings, vertical reinforcing ribs 38 are made in the cavity 14, extending perpendicular to the outer wall and having recesses 33 open towards the bottom, with the top of the recess being biased towards the outer wall of the container.

As shown in figure 4, the peripheral edge 23 of the lid, which is located on the inner side of the wall 3 of the container, is provided with segments 28, 29 of different radial widths, which leads to an effective reinforcing profile for absorbing forces on the sealing region of the rib 20 or seal 11. According to In this example, the circumferential extent of the segments 28, 29 is a multiple of their width. Thus, the protrusions are boxed. The bevels 24 and the vertical wall regions 25 end at the same distance from the main axis of the container, while the regions 30 defining the bevel 24 on this side are inclined to the periphery of the lid. A lockable spout, which is located on about one fourth of the diameter of the container, is also located in the central area 26 of the lid.

As shown in the view of FIG. 5, showing the stacked lids, the lower edge of the latching edge 7 of the lid rests on the sliding bevel 17 and the lower edge 35 of the sealing rib 20 rests on the horizontal protrusion 31 of the groove 34 holding the seal 11. The lower edge of the box protrusion 32 may alternatively or additionally rest on the upper edge of the protrusion of the lower cover.

List of items

1 - Container

2 - Cover

3 - Outer wall

4 - Top edge

5 - Bead

6, 7 - Snap edge

8 - Outside side

9 - Rib

10 - Side

11 - Seal

11a - sealing rib

12 - Vertical section

13 - Bevel

14 - Cavity

15 - Bevel

16 - Hardening edge

17 - sliding bevel

18 - Shoulder

19 - Corking unit that protects against unauthorized opening

20 - sealing rib

21 - Deepening

22 - Tide

23, 24 - Bevel

25 - Wall

26 - Area

27 - Outer wall

28, 29 - Segment

30 - Area

31 - Horizontal ledge

32 - Lower edge

33 - Notch

34 - Groove

35 - Lower edge

36, 37, 38 - Rib

Claims (19)

1. The injection molded plastic container with a snap-on lid and a snap-in element provided on the upper edge region of the container for latching on the lid, the lid having a peripheral latching edge (7) and a peripheral groove (34) for receiving the upper the edges (4) of the container (1), the lid having a region that comes into tight contact with the upper edge region of the container, and this region has a peripheral seal structure located in the groove (34), characterized The fact that the seal (11) is made of a more elastic material than the container (1) and / or the lid (2), and the seal (11) is made separately from the snap-on edge (7) and is molded integrally by molding under pressure on the lid (2) or container (1), and in the upper region of the container (1) on the outside, there is provided a downwardly facing peripheral collar (5) which is attached to the region of the upper edge (4) of the container at the height of the sealing region or at a distance of several wall thickness of the container. 2. The container according to claim 1, characterized in that the two sealing areas (11, 12) of the seal (11), located at different angles to the main axis of the container, are spaced relative to each other. 3. The container according to claim 2, characterized in that the seal (11) has a region (12) that can come into contact with the region located radially inward relative to the upper edge (4) of the container and tilted down towards the inside of the container. 4. A container according to any one of claims 1 to 3, characterized in that the seal (11) has at least one peripheral sealing rib (37) protruding towards the edge (4) of the container, which is in close contact with the upper region container (1). 5. The container according to any one of claims 1 to 4, characterized in that at least one peripheral rib (36), which may come into contact with the seal (11), is made on the container (1) opposite to the seal (11) . 6. The container according to claim 5, characterized in that the container (1) and the seal (11) are provided with protrusions in the form of ribs (36, 37), which, each, are located relative to each other so that the protrusions (36, 37) on the container (1) and the seal (11) come into contact when the lid (2) is put on the container. 7. A container according to any one of claims 1 to 6, characterized in that the base of the groove receiving the seal (11) and the seal (11) are provided with corresponding protrusions and recesses. 8. A container according to any one of claims 1 to 7, characterized in that at the height of the seal (11), the outer side (8) of the groove (34) receiving the seal (11) on the lid (2) is in lateral contact with the outside container (1) in the region of the upper edge (4) of the container. 9. The container according to claim 8, characterized in that the jumpers (9), protruding radially outward, are integrally molded on the outer region adjacent to the upper edge (4) of the container, while their radial extension is less than the thickness of the walls of the container. 10. A container according to any one of claims 1 to 9, characterized in that at least one radially protruding reinforcing rib (16) is integrally molded on the edge of the container on the side of the snap element (6) facing the upper edge (4 ) container. 11. The container according to any one of claims 1 to 10, characterized in that the upper region of the container (1) has a downwardly facing peripheral region (5) of a flange on the outside, which is attached to the region of the upper edge (4) of the container. 12. A container according to any one of claims 1 to 11, characterized in that the upper region of the container collar has a radially protruding, downwardly facing peripheral region (5) of the collar, on which the latching element (6) is molded in one piece. 13. The container according to any one of claims 1 to 12, characterized in that the lid (2) has a peripheral region (20) spaced from the seal (11), which is in close contact with the inside of the container. 14. The container according to item 13, wherein the sealing region of the lid is made in the form of a peripheral rib (20) protruding downward from the bottom side of the lid. 15. The container according to 14, characterized in that the region (22), protruding upward from the lower edge of the ribs (20), is located on the inner wall of the container radially inward relative to the peripheral ribs (20). 16. The container according to one of claims 1 to 15, characterized in that the lid (2) is provided with at least one protrusion (25, 29) extending radially inward from the inner wall (3) of the container, molded integrally on the top side of the lid and extending towards the main axis of the container. 17. A container according to claim 16, characterized in that the upper side of at least one protrusion (25, 29) is vertically spaced from the lid region (20) in tight contact with the inner wall of the container. 18. The container according to item 16 or 17, characterized in that at least one protrusion is made in the form of a radial edge (20), extending in a circle around the inner side of the lid. 19. The container according to p. 18, characterized in that the inwardly facing protrusions (29) are integrally molded on the peripheral edge (20).

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