EP2799355A2 - Plastic container - Google Patents

Abstract

The invention relates to a plastic container (100) having a bottom (102) and side walls (104) standing on the bottom (102), wherein a receiving region (105) of the container is defined by the bottom (102) and the side walls (104), wherein the bottom (102) on its side facing away from the receiving area (105) has an inner area (402) and a running area (402) surrounding the inner area (402), wherein the running area (200) has an inner ring (402) surrounding the inner area (402). 704), an outer rim (700) surrounding the inner rim (704) and a central rim (702) disposed between the inner rim (704) and the outer rim (700), the central rim (702) being entirely inner Wreath (704) surrounds, wherein the central rim (702) has a first tread for the container, wherein the first tread is increased relative to the inner rim (704) and the outer rim (700).

Description

The invention relates to a plastic container with tread.

Various plastic containers are known from the prior art. For example, this describes DE 40 06 188 C1 a transport box made of plastic with a bottom which is provided on its underside with ribs, which carry at the edge region a second circumferential bottom surface, which forms laterally open pockets with the bottom and the ribs. This construction of a transport box gives the floor a very high stability, so that in the box heavy industrial goods can be transported. The second circumferential bottom surface makes it possible to transport the box on roller conveyors. For this purpose, the second bottom surface at its edge facing the center of the box has an obliquely upwardly extending section.

The invention has for its object to provide an improved transport and storage container made of plastic.

The object underlying the invention is solved by the features of the independent claim. Preferred embodiments of the invention are indicated in the dependent claims.

It is a plastic container having a bottom and standing on the floor side walls, wherein a receiving area of the container is defined by the bottom and the side walls, wherein the bottom on its side facing away from the receiving area has an inner area and a surrounding inner race, wherein the A tread comprises an inner rim surrounding the inner region, an outer rim surrounding the inner rim, and a central rim disposed between the inner rim and the outer rim, the central rim completely surrounding the inner rim, the middle rim defining a first tread for the container wherein the first tread is raised from the inner rim and the outer rim.

In the context of the description, the term "running rim" is understood to mean the surface of the container with which the container at least partially rests on a floor surface. When rolling over a roller conveyor of the tread is the surface "casserole area", with which the plastic container runs onto the rollers of the roller conveyor and then gets in contact with the transport rollers of the roller conveyor.

Embodiments of the invention could have the advantage of minimizing noise during sliding of the plastic container over the rollers of the roller conveyor. By increasing the middle ring, the contact surface becomes minimized, with which the container is in contact with the rollers of the roller conveyor.

According to one embodiment of the invention, the first running surface is rounded at its sides facing the inner rim and / or the outer rim towards the receiving area of the container. This could have the advantage that the first tread of the middle ring does not run abruptly but steadily, evenly and gently onto a transport roller. This smoother rolling will minimize the noise associated with rolling up.

Another advantage could be that vibrations of the plastic container are minimized by the softer curling. This makes it possible to transport such cargo in the plastic container, which is sensitive to shocks. These could be, for example, optical measuring instruments.

According to one embodiment of the invention, the floor further comprises a second tread, wherein the second tread is guided from the outer corners of the outer rim to the first tread, wherein the second tread is increased relative to the inner rim and the outer rim. Preferably, the outer ring is completely interrupted by the second tread several times. In addition, e.g. the increase of the second tread is identical to the increase of the first tread. In addition, the second tread may be rounded at its outer edge towards the receiving area of the container.

This could have the advantage that it is ensured even in the case of an oblique overflow of the container on the transport rollers that the noise associated with the rolling is minimized. Because even the corners of the container bottom can be optimized so that a low-noise running behavior is possible. Another advantage could be that due to the second running surface, in particular during the rounding of the second running surface, the surface with which the container rolls up onto a running roller only gradually increases during the rolling-up process. This could make the reeling even gentler.

According to one embodiment of the invention, the floor further comprises a third tread, wherein the third tread is guided perpendicular to the outside of the container from the outer edge of the outer rim to the first tread, wherein the third tread is increased relative to the inner rim and the outer rim. The increase of the third tread is e.g. identical to the increase in the first tread. Further, e.g. the third tread rounded at its outer edge towards the receiving area of the container. This could have the advantage that even when carrying high loads in the container interior, the emergence of the container bottom on transport rollers remains gentle. Due to the high loads, the container bottom could in particular asymmetrically bend down in the region of the container edge, nevertheless a gentle emergence is guaranteed even in the sagged area at the container edge by the additional "emergence aid" in the form of the third tread. The third running surface could thus ensure that a highly uniform loading edge of the container bottom is ensured under high load on the container bottom.

• die Abstandsdifferenz zwischen der Oberfläche des inneren Kranzes und der Oberfläche der ersten Lauffläche vom Innenbereich zur Lauffläche hin gesehen stetig ab und/oder
• die Abstandsdifferenz zwischen der Oberfläche des äußeren Kranzes und der Oberfläche der ersten Lauffläche vom äußeren Kranz zur Lauffläche hin gesehen stetig ab.

According to one embodiment of the invention takes

• the distance difference between the surface of the inner rim and the surface of the first tread from the inner region to the tread as seen from steadily and / or
• the distance difference between the surface of the outer rim and the surface of the first tread from the outer rim to the tread as seen from steadily.

This could also help to ensure a smooth emergence on a transport roller, or a gentle sliding down a transport roller. For just in the case of a load on the container bottom from the inside of the container due to a large load in the container, the container bottom could deform in the direction of transport rollers. Since, however, the said distance difference decreases steadily, it is ensured at all points of the container bottom that the deflection - which usually shows its maximum centered on the container bottom - not causes part of the container bottom to protrude beyond the first tread. This would lead to unwanted running noise.

This could also help that, according to an embodiment of the invention, the inner region towards the inner rim seen in the plane of the container bottom has a crowning, wherein the crown extends completely around the inner region. Under the knowledge that a deflection of a container bottom typically shows a maximum centered on the container bottom, the crowning can simulate the hypothetical deformation of the bottom. In particular, in a rectangular shape of the container, this hypothetical deformation of the bottom will have a kind of oval shape when projected onto the plane of extension of the container bottom. By having e.g. in the case of a rectangular shape of the container, the inner region is stretched more in the longitudinal direction of the container bottom than in the transverse direction of the container bottom, with the longitudinally extending crown differing from the transversely extending crown, it could be ensured that there is optimally room for deformation to take place Container bottom is created. The space available for the deformation is thus almost proportional to the expected spatial deformation of the soil.

According to one embodiment of the invention, the interior of the floor is a ribbed floor. For example, the ribs of the ribbed bottom could run perpendicular to the outer sides of the container, whereby in particular a power transmission from the container center to the container outer sides can be optimized. The ribbed bottom thus leads to an unintended bending of the soil in the region of the ribbed bottom is reduced. Preferably, the ribbed bottom is additionally concave, that is curved in the direction of the container interior. This also helps to increase the carrying capacity of the container when loading at high loads. Forces acting on the bottom of the tank are transmitted evenly outwards towards the outer walls on the tread.

According to one embodiment of the invention, the first tread and / or the second tread and / or the third tread are formed integrally with each other.

According to one embodiment of the invention, the material of the first tread and the second tread is softer compared to the material of the inner rim and / or the outer rim. This makes it possible to optimize the noise characteristics when overflowing the tread over a roller conveyor in an efficient manner. With respect to the bottom and the rest of the container, however, a material could be selected, which is particularly impact resistant and stable.

According to one embodiment of the invention, the outer rim has at its seen in the plane of the bottom outer region to the outside of the container open recess, the recess has a bottom side and a wall facing the receiving area top side, wherein the bottom side opposite the top resiliently formed is.

This could have the advantage that the noise during the sliding of the plastic container over the rollers of the roller conveyor is minimized. The resilient design of the outer edge of the tread gently cushioned when rolling the tread on a transport roller of the reeling. This smoother cushioning further minimizes the noise associated with rolling up.

Another advantage could be that vibrations of the plastic container are minimized by the softer curling. This makes it possible to transport such cargo in the plastic container, which is sensitive to shocks. These could be, for example, optical measuring instruments.

According to one embodiment of the invention, the recess extends around the entire outside of the container. Thus, it does not matter in which direction the plastic container slides over the rollers of the roller conveyor. In every orientation there is a minimization of noise during sliding over.

According to one embodiment of the invention, the recess is divided into a plurality of chambers by webs. Alternatively, the recess extends continuously around the entire outside of the container. While the latter has the advantage that the resilient properties of the recess can be better utilized, dividing the recess into a plurality of chambers by means of webs could have the advantage that the stability of the recess is increased. In particular, this could avoid that the region of the recess breaks off from the edge of the container.

According to one embodiment of the invention, the plastic container further comprises a groove extending on the rear side of the bottom side of the recess, the groove extending parallel to the outside of the container towards which the recess is open. The groove may be straight or serpentine or zigzag parallel to the outside of the container. The extension direction of the groove is thus parallel to the outside of the container. Thus, if the recess extends around the entire outside of the container, the groove runs parallel to the associated outside around the entire container. The use of a groove could have the advantage that the resilient properties of the bake area of the container can be further optimized. For example, a very impact-resistant plastic could be used as the tread, which has only low resilient properties. By providing an additional groove, however, takes place in the region of the groove material thinning, so that thereby the spring action can be adjusted. This can be defined by the choice of a virtually arbitrary plastic for the tread, the spring property of the casserole area, that is, the recess.

Preferably, the groove is V-shaped, the recess terminating in a bounding wall with the tip of the groove facing the wall. The recess thus has in this case the said upper side, the bottom side, wherein the bottom side and the upper side are connected to each other by this limiting wall.

The use of a V-shaped groove could allow in a particularly simple manner to adjust the spring characteristics of the casserole. The reason could be that the V-shape in the material, a highly defined weakening is introduced, which allows the said spring action.

According to one embodiment of the invention, the thickness of the bottom side decreases in the region of the recess in the direction of the outside of the container. Thus, instead of the container abruptly coming to rest in the region of the recess on a roller of a roller conveyor, the decrease in the thickness of the bottom side, which is preferably continuous, results in a very smooth start-up and thus a continuous increase in the spring force. This leads to the noise being further minimized.

According to one embodiment of the invention, the bottom side is rounded at its outer edge facing the outside of the container. This also serves to optimize the emergence of the outer edge on a roller of a roller conveyor. An abrupt and thus noise developing emergence is avoided.

According to one embodiment of the invention, the recess ends by said limiting wall, wherein the wall itself is also rounded. The rounding of the wall further allows to precisely adjust the resilient properties of the bake area. By rounding off, however, the mechanical stability of the connection of the region of the recess is increased to the rest of the floor. There are no force peaks due to the rounding, so that the risk of breakage of the resulting by the recess run-area is minimized.

According to one embodiment of the invention, the bottom side opposite the top is so resiliently designed to reduce a running noise of the container on a roller conveyor when the tread moves over the roller conveyors.

According to one embodiment of the invention, the bottom has open pockets towards the outside of the container, the pockets passing through the bottom and the bottom Laufranz are formed, wherein the pockets are formed by the bottom and the tread ribs connecting. This could allow low cost of materials cost-effective production of the container in an injection molding process. So it is not required solid material from which out the recess is formed.

According to one embodiment of the invention, the ribs forming the pockets run obliquely to the outer sides of the container. Since transport boxes are usually transported via roller conveyors aligned with at least one side wall parallel to the rollers, is ensured by the oblique arrangement of the pockets forming ribs that in most cases of transport of the plastic container via a roller conveyor, the majority of the ribs obliquely to the rollers is arranged. The container never rests with a rib parallel to a roll on the roll. This could avoid that, in particular, the container is in such a position for a long period of time, in which the container is located with the ribs in parallel between different roller conveyors. In other words, it could be avoided that in case of unfavorable positioning of the container, the ribs each come to rest so that they extend in the cavities between adjacent rollers parallel to these rollers. This could cause the area between the ribs to bend down towards the rollers. Even a slight deformation would be sufficient here, however, that in the case of a subsequent sliding of the container over the rollers due to the unevenness of the tread now present, a noise during overflow is increased. In this case, it could thus be prevented by inclined ribs that unintentional bending and thus shaking of the container when overflowing over the rollers.

The inclined ribs, in particular at an angle of 45 ° to the respective side walls thus also minimize the risk of noise when overflowing over a roller conveyor.

According to one embodiment of the invention, the limiting wall is formed by the ribs forming the pockets, the upper side also being formed by the ribs forming the pockets. Since thus the recess is preferably present only in the ribs themselves, the further technical is hardly or not at all affected by the recess by providing the recesses.

It should be noted that the above-described embodiments of the invention can be combined with each other in an arbitrary manner, as long as the combined embodiments are not mutually exclusive.

Figur 1

eine schematische Ansicht eines Transport- und Lagerbehälters aus Kunststoff,

Figur 2

eine seitliche Ansicht eines Behälters,

Figur 3

eine vergrößerte Ausschnittsansicht der Figur 2,

Figur 4

eine Ansicht eines Bodens des Behälters der Figur 1,

Figur 5

eine Ansicht eines Behälterbodens,

Figur 6

eine seitliche Ansicht eines weiteren Behälters,

Figur 7

eine perspektivische Ansicht eines Behälters von schräg unten.

Embodiments of the invention will be explained in more detail below with reference to the following drawings. Show it:

FIG. 1

a schematic view of a transport and storage container made of plastic,

FIG. 2

a side view of a container,

FIG. 3

an enlarged sectional view of the FIG. 2 .

FIG. 4

a view of a bottom of the container the FIG. 1 .

FIG. 5

a view of a container bottom,

FIG. 6

a side view of another container,

FIG. 7

a perspective view of a container obliquely from below.

Hereinafter, similar elements will be denoted by the same reference numerals.

The FIG. 1 shows in a perspective view of a plastic container 100 for transporting and storing piece goods with bottom 102 and side walls 104 which senkkenkt stand up on the floor 102. Through the bottom 102 and the side walls 104, a receiving area 105 of the container is defined, in which the cargo can be received.

It can also be seen in FIG. 1 Pockets 202 which are open to the outside of the container. The pockets are formed by the bottom 102 and a tread 200 of the container 100. Ribs 204 connect the bottom 102 with the tread 200.

This is in more detail in the sectional drawing of FIG. 1 AA in the FIG. 2 seen. The container 100 can be placed with its tread 200 on a surface. For example, the surface may be transport rollers of a roller conveyor. As further in the FIG. 2 it can be seen, connects to the tread 200 in the direction of the container center (ie, opposite to the direction to the outside 208 of the container) to another area 206, through which the bottom of the container is formed concave toward the receiving area 105 of the container. Now push loads through the cargo on the floor 102, this is done by an optimal power transmission to the tread 200. In addition, it is possible that the bottom 102 bends slightly due to the concave shape of the portion 206 down.

In the FIG. 3 is shown in an enlarged view of the outside 208 facing edge region of the tread 200. As can be seen there, the tread 200 has at its outer region, seen in the plane of the tread, a recess 300 open towards the outside 208 of the container. The recess has a bottom side 304 and an upper side 302 facing the receiving region of the container. According to the above description, the bottom side 304 is resiliently formed with respect to the upper side 302. Further, on the bottom side 304 of the recess, there is a groove 308 in the tread 200, the groove 308 being V-shaped. The tip of the V-shape in this case has the limitation indicated by reference numeral 310.

The boundary is formed by one of the ribs 202. In the embodiment of FIG. 3 Thus, the recess 300 is a recess which has been formed in the rib 202. The element labeled 310 is thus a rounded bounding wall formed by the rib 202.

It can also be seen in FIG. 3 in that, on the one hand, the thickness of the bottom side 304 in the region of the recess 300 decreases continuously in the direction of the outside 208 of the container. In addition, the bottom side 306 is rounded off on the front side toward the outside 208.

Now runs the in FIG. 3 apparent container to the right on a conveyor roller, not shown, so will first run on the role of the tread with its bevel 306 on the role when hitting the respect to the rib 202 tongues projecting tread on the role of the tread. Due to the freestanding tongue shape, the tread 200 is resiliently formed in its front portion, which is further enhanced by the presence of the groove 308. When acting on the conveyor roller acting on the container 100 forces are mitigated by the resilient yielding of said tongue. As a result, the noise that occurs when the container runs on a conveyor roller, minimized.

The FIG. 4 shows a perspective view of the relative to the Figures 1 - 3 discussed container 100, which is even more clearly seen how the recess 300 is realized by a material recess on the ribs 204. In the outer region of the container 100, the ribs 204 are thus not pulled through to the outer edge of the tread 200, but in this area material of the ribs 204 is recessed.

The FIG. 5 shows the container 100 in a plan view of the floor from below. The ribs 204, which are not normally visible in this view, have been shown schematically for the sake of completeness, which in reality are covered by the tread 200. As already mentioned above, a set of pockets 202 is formed by the bottom 102 and by the tread 200 and by the ribs 200 set at 45 ° to the outer walls. The ribs 204 extend diagonally in each quadrant of the container bottom. The ribs of adjacent quadrants meet one another only in sectional lines, which in each case bisect the container bottom in the longitudinal and transverse sides.

Further apparent in the FIG. 5 is the schematically illustrated groove 308, which extends continuously parallel to the outer sides of the container on the tread. It can be seen in FIG. 5 a rib bottom 402, which is adapted to the in FIG. 2 discussed bevel 206 of the bottom of the container in the central area to realize. The ribs 400 of this ribbed bottom 402 run perpendicular to the outer sides of the container.

While the inclined ribs 204 serve primarily to reduce the running noise of the container via a roller conveyor, the ribs 400 placed perpendicular to the outer walls serve to optimally transfer load from the container resting on the floor 102 to the cradle 200. Overall, this is generally the case spoke two different rib geometries for the central ribbed bottom and the adjoining pockets of the container used.

As further in Fig. 5 can be seen, the edge region 500 and 502 at the transition between the ribbed bottom 402 and tread on a crowning, wherein the crown extends completely around the ribbed bottom. The container has a rectangular shape, wherein due to the crowning, the rib bottom is stretched more in the longitudinal direction of the container bottom than in the transverse direction of the container bottom, with the longitudinally extending crown 502 (bulge) being different from the transversely extending crown 500.

By the crowning of the circumferential edge region of the ribbed bottom is stretched in the direction of the container outer sides. Now acts a force from the receiving area of the container to the container bottom, this force often leads to a stretching deformation of the container bottom. The floor thus "warps" in the direction perpendicular to the floor surface. Regardless of the bottom geometry, the deformation has a shape that resembles an elongated ellipsoid of revolution. By crowning the bottom of the rib 402 in the plane of the floor, the shape of the ellipsoid projected onto the floor is modeled. Thus, the ribbed bottom 402 will have a supporting rib structure there, where deformation of the soil is most likely to be expected.

In the Figures 1 - 5 a variant of a plastic container was discussed, in which the suspension of the edge region of the tread was realized by a recess of the ribs 204.

In the FIG. 6 an alternative variant is shown in which the pockets 202 are kept unchanged below the bottom together with the ribs 204 in the outer region of the container. Instead, a special tread 200 was chosen, now the tread 200 itself has the said recess 300. In this case, due to the recess 300, said bottom side 304 and said upper side 302 are created in the tread 300.

In the variant of Fig. 6 It may be advantageous if the recess 300 is further subdivided by different webs not shown in detail. Although it could be weakened in the region of the webs, the spring action of the tread. However, the overall stability of the container is increased overall by the provision of the webs.

Although in FIG. 6 the continuous decrease in the thickness of the tread (cf. FIG. 3 , Reference numeral 306) is not shown in detail, it is understood that a such a variant of the tongue-shaped run-on area of the tread may be provided.

The FIG. 7 shows a perspective view of a container obliquely from below. Visible first is the tread 200, in turn, the located on the edge recess 308 can be seen. Likewise, the ribbed bottom 402 can be seen.

The tread 200 has an inner rim 704 surrounding the rib bottom 402, an outer rim 700 surrounding the inner rim, and a middle rim 702 disposed between the inner rim 704 and the outer rim 700, with the central rim 702 completely surrounding the inner rim 704 , The middle rim 702 at least partially forms a first tread for the container since the first tread is increased from the inner rim 704 and the outer rim 700.

Further, both the inner rim 704 and the outer rim 702 are bevelled so that they have a continuous slope in the direction of the central rim 702. Thus, the distance difference between the surface of the inner rim 704 and the surface of the first tread from the rib bottom 402 decreases steadily. In addition, the difference in the distance between the surface of the outer rim 700 and the surface of the first tread from the outer rim to the running surface decreases steadily.

If, therefore, a conveyor roller would extend in the direction 710 and the container 100 were moved to the left on such a conveyor roller, initially a very small part of the surface of the outer rim would slowly and steadily run onto the conveyor roller. The container would slide smoothly on the roller, which is further damped by the spring action of the edge (recess 300).

In order to ensure as smooth running on a conveyor roller, when the container with its side is not parallel to a conveyor roller, but slightly twisted thereto, a second tread 706 and a third tread 708 is provided, wherein the second tread 706 is guided from the outer corners of the outer rim 700 to the first tread 702, wherein the second tread 706 relative to the inner rim 704 and the outer rim 700 is increased. The increase in the second running surface 706 also increases steadily from the outer edge of the container to the middle rim 702.

The same applies to the third running surface 708, which is raised in relation to the inner rim 704 and the outer rim 700. The increase of the third running surface 708 also increases steadily from the outer container edge to the middle rim 702. Both elevations of the second and third tread then again steadily decrease as seen from the central rim 702 in the direction of the ribbed bottom 402.

In the following, we will discuss the interaction between the treadmill and the crown 500, 502, as described in the FIG. 5 is shown. In the event that a load presses from the interior of the container to the bottom of the container, the resulting deformation of the bottom, as mentioned, will take on the form of an elongated ellipsoid of revolution. In the case of a rectangular container, the deformation will in each case be maximum at those points through which the planes of symmetry perpendicular to the container bottom and parallel to the outer walls intersect the crowns 500 and 502. In the FIG. 7 For example, such a fictitious intersection has been labeled 712.

At such locations 712, due to the crown 502, the distance "d" between the central rim 702 and the fin bottom 402 will be minimized as compared to the edge regions at which the two crowns 500, 502 intersect. As a consequence, at the locations 712, the slope of the inner rim 704 towards the central rim 702 is maximum.

However, since in the event that a load from the container interior to the container bottom presses the force distribution acting on the ground takes the form of a stretched ellipsoid of revolution, the resulting deformation of the inner ring 704 is due to the crowning at a given distance from the container edge (perpendicular measured to the edge) always be the same. Such an equidistant line 714 is in FIG. 7 indicated. Along this line, the vertical distance between the tread of the middle rim 702 and the inner rim 704 will be constant at a deformation. As a consequence, the container, when over-rolling over rollers at the level of the bottom of the rib, will come into contact uniformly along the line 714 with the container bottom. This ensures a smooth running behavior even with heavy loading of the container.

LIST OF REFERENCE NUMBERS

100

container

102

ground

104

Side wall

105

reception area

200

tread

202

bag

204

rib

206

concave area

208

Outside of the container

300

recess

302

top

304

bottom side

306

Area

308

recess

310

rib edge

400

ribs

402

ribbed floor

500

crown

502

crown

700

outer wreath

702

middle wreath

704

inner wreath

706

tread

708

tread

710

direction

712

Point

714

line

Claims (20)

Plastic container (100) having a bottom (102) and side walls (104) standing on the bottom (102), wherein a receiving area (105) of the container is defined by the bottom (102) and the side walls (104). 102) on its side facing away from the receiving region (105) has an inner region (402) and a surrounding inner region (402) tread (200), wherein the tread (200) surrounding the inner region (402) inner ring (704), a comprising the outer rim (700) surrounding the inner rim (704) and a central rim (702) arranged between the inner rim (704) and the outer rim (700), the middle rim (702) completely covering the inner rim (704) wherein the central rim (702) has a first tread for the container, the first tread being raised from the inner rim (704) and the outer rim (700), the bottom (102) further comprising a second tread (706) ), wherein the z wide tread (706) from the outer corners of the outer rim (700) is guided to the first tread, wherein the second tread (706) relative to the inner rim (704) and the outer rim (700) is increased. The plastic container (100) of claim 1, wherein the first tread is rounded at its sides facing the inner rim (704) and / or the outer rim (700) toward the receiving area (105) of the container. The plastic container (100) of any one of the preceding claims, wherein the elevation of the second tread (706) is identical to the elevation of the first tread. Plastic container (100) according to one of the preceding claims, wherein the second running surface (706) is rounded at its outer edge in the direction of the receiving area (105) of the container. The plastic container (100) of any one of the preceding claims, wherein the bottom (102) further includes a third tread (708), the third tread (708) being perpendicular to the outside of the container from the outer edge of the outer rim (700) to the first tread with the third tread (708) raised relative to the inner rim (704) and the outer rim (700). The plastic container (100) of claim 5, wherein the elevation of the third tread (708) is identical to the elevation of the first tread. Plastic container (100) according to one of the preceding claims 5-6, wherein the third running surface (708) is rounded at its outer edge in the direction of the receiving area (105) of the container. Plastic container (100) according to one of the preceding claims, wherein - the distance difference between the surface of the inner ring (704) and the surface of the first tread from the inner region (402) to the tread decreases steadily and / or - The distance difference between the surface of the outer ring (700) and the surface of the first tread from the outer rim (700) to the running surface decreases steadily decreases. A plastic container (100) according to any one of the preceding claims, wherein the inner portion (402) has a crown (500; 502) towards the inner rim (704) as seen in the plane of the container bottom (102), the crown (500; 502) extends completely around the interior area (402). The plastic container (100) of claim 9, wherein the container has an elongated rectangular shape, wherein the inner region (402) is stretched more longitudinally of the container bottom (102) than in the transverse direction of the container bottom (102), the longitudinally extending crowning of the diffraction extending in the transverse direction differs. The plastic container (100) of any one of the preceding claims, wherein the interior region (402) of the bottom (102) is a ribbed bottom (402). The plastic container (100) of claim 11, wherein the ribs (400) of the rib bottom (402) are perpendicular to the outer sides (208) of the container. The plastic container (100) of any one of the preceding claims, wherein the material of the first tread and the second tread differs from the material of the inner rim (704) and / or the outer rim (700). The plastic container (100) of claim 13, wherein the material of the first tread and the second tread is softer compared to the material of the inner rim (704) and / or the outer rim (700). A plastic container (100) according to any one of the preceding claims, wherein the outer rim has a recess (300) open towards the outside of the container at its outer region seen in the plane of the bottom (102), the recess (300) forming a bottom side (304 ) and to the receiving area (105) facing the top (302), wherein the bottom side (304) opposite the top (302) is resilient. The plastic container (100) of claim 15, wherein the recess (300) extends around the entire exterior of the container. A plastic container (100) according to any one of the preceding claims 15-16, further comprising a groove (308) extending on the rear side of the bottom side (304) of the recess (300), the groove (308) extending parallel to the outside of the container to which the recess (300) is open. A plastic container (100) according to any one of the preceding claims 15-17, wherein the bottom (102) has pockets (202) open towards the outside of the container, the pockets (202) being defined by a part of the bottom (102) and the tread (200) ), wherein the pockets (202) are formed by ribs (204) connecting the part of the bottom (102) and the tread (200). The plastic container (100) of claim 18, wherein the ribs (204) of the pockets (202) are oblique to the outer sides (208) of the container. A plastic container (100) according to claim 18 or 19, wherein the limiting wall (310) is formed by the ribs (204) forming the pockets (202), the top (302) being formed by the ribs forming the pockets (202).

Images