DE10022851A1 - Tub with lid; has barrel-like body and fitted, sealing lid with seal that can be opened and resealed and tightening device to tighten lid against body, so that lid engages body tightly and completely - Google Patents

Abstract

The tub has a barrel-like body (1) and a fitted, sealing lid (2) with a seal that can be opened and resealed and a tightening device to tighten the lid against the body. In the tightened state, the lid engages tightly against the body on a complete, annular first sealing position, which encircles the symmetrical axis (10) of the container. The tightening device is axially separated from the first sealing position.

Description

I. Field of application

The invention relates to a container with a barrel-like body and matching, tight lid.

II. Technical background

It is common today for the powdered homo-. and copolymers of tetrafluor ethylene (TFE) in barrel-like plastic containers or fiber drums, preferably with a pot-shaped body and a matching lid. The Containers have the task of the mentioned polymers, which are often under pure room conditions are manufactured and processed, against dust and moisture as well as to protect pressure loads. Foreign matter of all kinds, moisture and Polymer particles compressed by pressure load lead to the processing of TFE polymers for imperfections in the molded articles made therefrom or Extrudates, especially in thin-walled products such as wire trains or foils are unacceptable.

For high-quality end uses, poly tetrafluoroethylene (PTFE) powders Plastic containers, for example made of poly propylene, preferred over fiber drums because they have better surfaces quality and inserting a film inner bag to protect the powder can be omitted.  

Different requirements are placed on the plastic containers: They have to be sufficiently tight, even if they are opened several times and Close. You also have to load according to DE-U-94 08 630 withstand pressure when stacking the filled containers the individual packaging units occurs. In practice, two to four Pallet stacks stacked one on top of the other, which in turn have two to three layers Containers are loaded. The containers are filled with 20 to 50 kg of powder. At certain filling heights in the container must not be exceeded during filling, otherwise the powder may cake together and be faultless Processing is not guaranteed.

Containers for PTFE powder in their technically complex, high quality Designs are preferably made by injection molding. Come here Bulk plastics such as polypropylene or polyethylene for price reasons for use. Because the containers are extremely stable during transport and storage, even at temperatures from -20 ° C to 60 ° C Chemically modified propylene copolymers are preferably used as the material. The packaging systems have a high value, so that again use, for example by cleaning and refilling.

The sealing of the containers for PTFE powder are very special Requirements. Compared to the well-known one-lid system, for An example of color is the packaging system according to EP-B-362 959 around a round three-component system consisting of container body, lid and instep ring. The principle of sealing is that the upper part of the body faces outwards runs out inclined, whereas thin flags around the inside of the lid open the upper part of the body can be pressed using the tension ring. The reset Fortune of these flags is low, however, so that after a first Opening and reclosing the tightness decreases significantly. Another one using the lid and recycling the container is practically not possible.  

In addition, the manufacturing of the sealing thin sealing lips by spraying casting process technically very complex and prone to failure, because for the complete Spraying out the thin sealing lips requires complex ventilation in the injection molding tool must be available. In the injection molding process, for example polymeric deposits for complete or partial addition of Venting areas occur, resulting in incomplete ejection of the leads to thin flags and therefore no longer the sealing function is guaranteed.

Analogously, this type of sealing with thin flags in the Lid interior in WO-A-96/37 410 for a rectangular plastic container described.

According to US-A-4 674 650 a seal for a round container is made Plastic described, which consists of the container body, lid and clamping ring. Sealing takes place by means of an additional sealing ring inserted in the cover seals the outer, downward-facing body. The contribution an additional sealing ring made of an elastic material has different Disadvantages: It makes the system more expensive, makes automatic cleaning of the Packaging system before use and must be used when disposing of the Packaging system as an additional material component, if the container material is to be recycled.

With a commercial packaging system consisting of a container body, Lid and clamping ring, the company Sulo Plast GmbH & Co. KG, the tightness produced by an elastomer seal, for example made of polyurethane, in a groove in the cover is cast in. This elastomer seal seals towards the top of the body. The main disadvantage of this system is that under the load pressure of the elastomer seal Transport and storage can damage the seal. Parts of the Seals are removed and can be in the PTFE powder to be protected  reach. In addition, the elastomer component must also be separated here the container lids after using the packaging system be sent to a recycling process.

III. Presentation of the invention a) Technical task

It is the object of the present invention to provide a container with a Provide sealing that a during transport and storage Excludes contamination of the content, repeated opening and closing allows without loss of tightness and without an elastomeric seal as additional material components and from so few Individual parts as possible.

b) solving the problem

This object is achieved by the characterizing features of claim 1 solved. Advantageous embodiments result from the subclaims.

Due to the axial spacing of the first sealing point 4 from the tensioning device 3, it can be designed in the area of the intermediate cover and / or body in such a way that they are elastically deformable between the relaxed and the tensioned state and the elastic restoring force ensures the tightness. In addition, due to the spacing in the area of the tensioning device, a second sealing point 5 can be arranged, so that overall a very high level of security of the seal is provided.

Because of the cup-shaped container that is open on one side and fits on it Cover, the sealing points are always closed all round, no matter whether the basic shape of the container is round or polygon.

The tensioning device is preferably in one piece with one of the containers parts, preferably together with the lid, formed, and preferably not throughout the scope, but in several separate places present, for example at four points distributed by approximately 90 ° each.

The clamping device consists of a radially striving Rastvor jump, which is preferably formed on the body and preferably from one there is a continuous ring flange over the circumference, and one radially inside open recess, which is formed on the locking tabs of the lid for receiving the ring flange as a locking projection.

The latching tabs have a significantly smaller wall thickness in the area of the latching depressions, that is to say the bottom of the latching depression, than to the side next to the latching tabs. Since the radially protruding edge of the lid, which leads to the recess, has a relatively large material thickness, which preferably increases radially from the outside inwards, when the locking tabs 33 are bent radially outward to open the clamping device, the locking tabs 33 can preferably be located in the region of low material thickness, i.e. in the area of the groove base of the locking recess, bend, or the circumferential edge of the cover overall in the connection area axially above the locking recess 32 .

Furthermore, the first sealing point is described below so that the sealing surface (groove) in the cover and the sealing web (upper edge of the Body wall) is formed on the container, while this assignment in the second sealing point (flange) is just reversed.

For one or all of the two sealing points, the assignment of Sealing surface and sealing web to the body or lid also vice versa  be, for example, the free upper end of the body edge V-shaped be grooved, in which a suitable projection of the cover could intervene.

Because of the high sealing probability of each individual sealing point and especially because of the high seal security of the container several separate sealing points and their mobility to each other can the sealing points are the body and lid directly against each other, that is risked without the interposition of a special, more elastic sealing material are with the advantage of easier recyclability and reduced Risk of contamination of the content due to detachable components of the Sealing material.

By sufficient axial spacing of the sealing points, the Distance to the diameter and / or length compensation used and thus the Sealing probability at both sealing points can be increased. If additionally at least one of the sealing points in several partial sealing points divided, this further increases the probability of sealing, even if the z. B. Sealing webs of the partial sealing points not relative to each other or are hardly mobile.

The following descriptions only refer to the cross-section form the corresponding places on the lid or body. However, these are - Except for the locking tabs - always formed in a ring all around accordingly the circular shape - round or polygonal or free-formed - shape of the body, i.e. its peripheral walls, in supervision.

In a preferred embodiment, the first sealing point consists of the free upper end of the body edge as a sealing web, on which one in the lower side of the lid formed groove with a preferably V-shaped cross section sits. The diameter of the upper end of the body edge is somewhat larger than the diameter of the groove in the lid, so that by the axial  Press the lid on the flank of the groove and the body edge radially inwards presses and possibly deformed elastically. This groove area forming the groove of the The lid goes radially inwards into the main part of the lid, the central area above and on the outside in a connection area that is on the outside the wall parallel to this or at an angle, e.g. B. with increasing distance, after outside is directed below.

At the lower end, the connection area merges into a lid edge, the in particular a fork-shaped or U-shaped cross section with or has several downward-facing free ends, the sealing webs.

With their free ends, these sealing webs can face upwards the sealing surface facing the top of one from the body wall represents externally projecting flange, pressed by means of a clamping device become.

The ring-shaped circumferential sealing surface against which the sealing web (s) can press horizontally, i.e. exactly perpendicular to the longitudinal direction of the Container, usually the axis of symmetry of the body and the lid, run or inclined to this, for example radially from the outside inwards decreasing, i.e. with increasing distance in the longitudinal direction compared to the free ending edge of the body.

Pressing the lid and body against each other, especially on both Sealing points is caused by a tensioning device, in particular in one piece z. B. molded on the lid, distributed separately over the circumference, Snap tabs as described above.

The locking tabs clamping ring have a radially inward, with angled mutually flanks equipped groove as a recess, whose Inner surfaces from the bottom of the groove to the open end, i.e. in the assembled Condition from radially outside to inside, increasingly distant from each other.  

The rear sides facing away from the sealing surface are also in the same way Both the edge of the lid and the flange are inclined:

The upward-facing back of the lid rim falls from the inside on the outside diagonally downwards, while the backside of the Flange rises diagonally from the inside to the outside, according to the inclination of the Inner flanks of the locking recess of the clamping ring to each other.

The likelihood of tight sealing of both sealing points becomes strong increased by the mobility of the elements forming the two sealing points either on the side of the lid or on the side of the body.

In practice, the ring flange is 10 mm to 100 mm, in particular 30 mm, below arranged the body edge and cantilevered 10 mm to 50 mm, in particular 20 mm, radially outwards. The all-round sealing bars on the ring flange of the body or can be arranged on the edge of the lid, are 1 mm to 15 mm, in particular 3.5 mm, high and 1 to 10 mm, in particular 3 mm, wide.

c) working examples

Embodiments according to the invention - with different dimensional Relations between lid and body edge - are closer in the figures described. Show it:

Fig. 1 the lid located on the body in the relaxed and in the tensioned state with a large axial extension of the lid and

Fig. 2 shows the lid in the relaxed and in the clamped state under slight axial extension of the cover located on the body,

Fig. 3 shows a third variant of the container, and

Fig. 4 is a perspective view of the closed container.

Figs. 1 to 3 show, respectively, along the longitudinal direction 20 in section, the axis of symmetry 10 of the body 1 and cap 2 whose bearing against one another, in each case in the figures a and c with loosely applied lid and b in the figures and d with lid clamped against the body. The figures c and d are steps in the area of the latching tabs, the figures a and b in the circumferential area in between, as can be seen from FIG. 4.

Common to the designs of FIGS. 1 to 3 is the basic design of the cross-sectional shape of the cover, in particular the edge of the cover, and the upper region of the wall of the body 1 : when viewed from above, both the cover and the body are symmetrical with respect to the axis of symmetry 10 , which at the same time should define the longitudinal direction 20 , so that all-round closed containers are formed by the only open side of the body being tightly closable by the lid. As a rule, the body and lid are rotationally symmetrical.

The wall 7 of the body 1 is preferably smooth on the inside, for easier filling, emptying and cleaning of the inside of the container.

On the outside, axially set back and also radially outwardly spaced from the freely ending body edge 1 a, the body 1 has a circumferential ring flange 8 which projects radially outwards and is also lower than the central region of the cover 2 .

The body edge 1 a, that is to say the wall, in particular above the ring flange, can be made somewhat thicker than below the ring flange, but generally not thicker than 3 mm.

The cross-section of the lid 2 in the radial region of the body edge 1 a has a U-shape or V-shape with an annular groove 6 open at the bottom, that is to say in the direction of the body, with which the lid 2 acts as the first sealing point 4 on the body edge 1 can be hung up.

Radially within this U-shaped or V-shaped groove area 2 c, the cover merges in one piece into its central area 2 d, which is thus lowered relative to the groove area 2 c. The radially outer leg of the groove area 2 c is extended either in the axial direction or obliquely outwards by means of a connecting area 2 b, at the lower outer free end of which the lid edge 2 a is in one piece. This is located in the axial direction in the attached state, thus still under the central area 2 d of the cover.

Spread over the circumference, a total of 4 latching tabs 33 project further downward in the axial direction from the purely outer end of the lid edge 2 a. These serve for locking with the ring flange 8 , whereby the cover is held tightly against the body in the locked state.

Furthermore, the lid edge 2 a is directed downward and radially concentrically surrounding sealing webs 11 b, 11 c radially inside the locking tabs 33 , which in a preferred embodiment, however, only run concentrically to one another in the area between the locking tabs 33 , and in the circumferential area of the locking tabs 33 to one single sealing web 11 b 'are summarized, the radial width of which is preferably the total width of the sealing webs 11 b, 11 c including their mutual spacing.

If the cover is clamped in relation to the body, the sealing should take place at at least the first, preferably two different sealing points 4 , 5 :

The free-ended body edge 1 a resting in the groove 6 of the lid 2 represents the first sealing point 4. The sealing webs 11 b, 11 c and 11 b 'of the lid edge 2 a resting on the upper side of the ring flange 8 of the body represent the second sealing point represents, which is divided by the concentrically extending sealing webs 11 b, 11 c, over the largest part of the circumference into two partial sealing points 5 a, 5 b.

Due to the fact that the pressure of the sealing web 11 b 'on the ring flange 8 is particularly strong in the area of the locking tabs 33 , a single sealing web is sufficient in this area. In the other circumferential areas, the two concentric sealing webs serve to increase the sealing security.

The bracing by means of the locking tabs takes place in that - as can be seen in Figures c and d in each case - the locking tabs 33 have a radially inwardly open locking recess 32 , which is arranged directly below the sealing web 11 b 'and the shape and dimension of the cross section correspond to the radially free outer end of the ring flange 8 , which is preferably not ribbed in this area, but rather solid.

As FIGS d show, respectively, the flanks of the latching recess 32, analogous to the sealing surface 12 b and back 14 converge the annular flange 8 at an angle outwards on each other, on the upper side by the sealing rib 11 b 'and on the bottom by a thickening in the locking tab 33 formed. The radially inner side of the thickening thus forms an oblique guide surface 35 , on which the radially outermost edge of the ring flange 8 slides along when the cover is pressed on from above, thereby bending the latching tab 33 radially outward until the lower thickening snaps over the ring flange 8 and the latter engages in the locking recess 32 of the locking tab 33 . In this state, both the sealing web 11 b 'in the area of the locking tabs 33 and in the other circumferential areas presses the sealing webs 11 b and 11 c from above onto the annular horizontal sealing surface 12 b, which represents the upper side of the ring flange 8 . The thinner, free end 34 of the latching tab 33 protruding downward beyond the thickening serves - also because of the sufficient distance to the outside of the wall of the body 1 - to reach behind with a finger for pulling radially outwards and thus loosening the cover 2 .

It is among other things important that the Decketrand 2 a b with its sealing webs 11, 11 c in relatively stable is formed. The same applies to the groove area 2 c, which for this purpose can have a wall thickness that is at least doubled compared to the normal wall thickness, for example, of the central area 2 d, in particular in the area of the groove base, and moreover by an additional stabilizing extension on the rear side of the groove, i.e. pointing upwards 2 e can be reinforced.

In contrast, the lid edge 2 a relative to the groove area 2 c is quite movable, for example due to reduced material thickness in the course in between, in particular in particular at the transition between the groove area 2 c and the connection area 2 b and the connection area 2 b and the lid edge 2 a.

As a result, for example, the lid edge 2 a can be bent slightly downward relative to the connection area or the entire connection area can be pressed somewhat radially inward relative to the groove area.

It is also important that the body edge 1 a, in particular the entire piece of the wall 7 from the flange 8 to the free end, is sufficiently stable, and in particular the wall thickness is thicker than the rest of the wall 7 , and thus the body edge 1 a can be bent inwards or outwards at its free end in the radial direction, but only with relatively great effort.

The outward flange 8 is also very stable, and in particular is stabilized by webs 15 running radially outward on the underside.

The flange 8 preferably has a horizontally extending upper side as a sealing surface 12 b, while the lower side 14 slopes away from the outside inwards. In the area in which the latching tabs 33 of the cover 2 are placed, the cross section of the ring flange 8 is preferably solid, formed in the other circumferential areas by means of ribs that are spaced apart over the circumference by radially extending webs 15 .

In addition, the ring flange 8 can be stiffened by vertical stabilizing webs 21 , which protrude outwards from the wall of the body 1 , as can best be seen in FIG. 4, and then merge into the ring flange 8 at the upper end, but run out freely at the lower end . The stabilizing webs 21 protrude radially outward only to such an extent that they do not hinder reaching around the outer free end of the ring flange 8 by the latching tab 33 , and are preferably also in the areas of the circumference which serve to place the latching tabs 33 in the peripheral areas between, usually arranged evenly.

Figs. 1 to 3 distinguished by the relation of the following to be defined distances A and B, respectively at the lid and body:

These distances to be measured in the longitudinal direction 20 , that is to say parallel to the axis of symmetry 10 , are defined as follows in the unstressed idle state of the body or cover: distance A in the cover is the axial extent between the bottom of the groove 6 and the sealing web 11 projecting the furthest downward b, 11 c of the lid edge 2 a.

Distance B in the body is the distance between the free upper end of the body edge 1 a and the upwardly facing sealing surface 12 b of the flange 8 .

In all cases, however, the cover 2 is located after clamping of the clamping device 3 at the first seal position 4 tightly in the groove 6 of the cover. 2 This sealing device can be supported by the second sealing point 5 on the ring flange 8 .

While in FIG. 1, distance B is somewhat larger than the distance A can be seen, this is in Fig. 2 just different. These different relations and the resulting situations can be chosen deliberately or due to manufacturing tolerances in the production of the cover or body, which is usually produced by injection molding.

If the lid spacing A is smaller than the body spacing B, as in FIG. 1, when the lid is loosely placed, its groove region 2 c sits on the free, upward-facing end of the body edge 1 a with a flank or the groove bottom of the groove 6 . b without the downwardly facing sealing webs 11, 11 2 c of the lid edge a is the upwardly facing, and generally at a right angle to the axis of symmetry 10 extending sealing surface 12 b of the flange 8 reach.

Provided that - due to differences in diameter - thereby the edge of the body 1 is not a in the groove bottom of the groove 6 of the cover 2, but thereof radially inwardly or preferably outwardly spaced on one of the flanks of the groove 6 is applied, the distance between the sealing ridges 11 is b ' , 11 b, 11 c of the Depkelrandes 2 a and the flange 8 at the second sealing point 5 may be even larger.

As shown in FIG. 1 a, the lower free ends of the concentrically circumferential sealing webs 11 b, 11 c are not at one level, but rather because of a slightly outward inclined position of the lid edge 2 a and also a slightly downward outward inclined position of the connecting area 2 b of the cover 2, the radially inner sealing web 11 b extends a little further to the sealing surface 12 .

By engaging the locking tabs 33, thus increasing penetration of the annular flange 8 in the locking groove 32 of the latching lugs 33, the locking tabs 33 of the flange 8 move by its own resilience as far as possible radially inwards and because of the inclined bottom thereby increasingly downwards. As a result, the lid edge 2 a is moved radially inward on the one hand and, on the other hand, simultaneously and / or instead axially pressed against the sealing surface 12 b of the flange, that is to say downward. This is due to the mobility of the lid edge 2 a with respect to the rest of the lid 2 , in particular with respect to the groove area 2 c, and in particular due to a bending or twisting of the individual parts of the lid to the transitions 17 and 18 on both sides of the wall, which are of lesser wall thickness Connection area 2 b.

Simply because of the radial inward movement of the lid edge 2 a and the approach of the transition area 2 b from the inclined position to the parallel position to the axial direction, at least one of the sealing webs 11 b, 11 c - in the tab area of the sealing web 11 b '- reaches with its free one End of the sealing surface 12 b of the flange 8 , whereby an additional seal is achieved at this second sealing point 5 . According to FIG. 1 b, the radially outer sealing web 11 c lies with its entire end face on the sealing surface 12 b, while the radially inner sealing web 11 b has only line contact with the sealing surface 11 b.

The axial movement of the lid rim 2 a groove 6, in particular the contact point on the flank against the edge of the body 1 a is also pressed against the first sealing body 4, and thus reached to the first sealing position 4 an increased tightness.

If the body edge 1 a has a slightly larger diameter than the groove base of the groove 6 , the body edge 1 a is additionally deformed somewhat radially inward when the cover 2 is pressed on at its free end, such as, for. B. in Fig. 1b, so that the elastic restoring force of the body edge 1 a in the relaxed rest position additionally the tightness at this first sealing point 4 increases.

If, in addition, the sealing surface 12 b does not run perpendicular to the axis of symmetry 10 , but instead was increasing from the radially outside to the radially inside, the contact point possibly moving in the direction of the groove base and the edge 1 a being slightly radially deformed, from the upper free end of the body edge 1 a assumes due to an inclined position, as shown in dashed lines in Fig. 2b, this axial bracing effect is further reinforced.

In contrast, the distance A of the cover 2 is greater than the distance B of the cover 1 in FIG. 2a. When loose placing of the cover 2 is thus of the lid edge 2a on the sealing surface 12 b of the flange 8, and because of the weight of the lid will thereby the edge of the lid 2 a the transition 18 to the connecting portion 2b around a little bend, so that only the radially inner sealing rib 11 b rest and the radially outer sealing web 11 c of the sealing surface 12 b will be slightly lifted.

At the first sealing point 4 , the bottom of the groove 6 will not reach the free end of the edge of the lid 1 a, unless it is not aligned in the radial direction with the bottom of the groove, but is radially outward - which is the preferred design - or offset on the inside and is therefore already on one of the flanks of the groove 6 .

By placing the clamping device 3 in the form of the locking tabs 33 , the lid edge 2 a along the sealing surface 12 b is initially pushed radially inward, and in addition also causes both sealing webs 11 b, 11 c of the lid edge 2 a on the sealing surface 12 b of the web 8 of the body 1 rest.

By this displacement radially inwardly is also attached to the rim of the lid 2 a neighboring connecting portion 2b is displaced radially inwardly and thus causes the edge of the body 1 is present a at least at the radially outer flank of the groove 6 - of the body rim, optionally with radial elastic deformation 1 a inwards, and thus also at this first sealing point 4 a seal occurs.

Another possibility is shown in FIG. 3:

. While was in the solutions of Figures 1 and 2, the wall thickness of the body rim 1 a considerably smaller than the width of the groove bottom of the groove 6 in the cover 2, this is reversed in the solution according to Fig. 3:

The wall thickness of the body edge 1 a, at least at its free end, is so large that it cannot penetrate into the groove 6 to such an extent that the bottom of the groove is reached.

The body edge 1 a is thus in loose attachment with its end region already on both flanks of the groove 6 , while the sealing webs 11 of the lid edge 2 a do not yet reach the sealing surface 12 b of the flange 8 . Only by placing and locking of the locking tabs 33 according to Fig. 3d, the edge of the lid 2 taken a radially inward, but especially also in the axial direction downwardly onto the sealing surface 12 b on which now the sealing ridges 11b, abut 11 c. As a result of this axial bracing, the free end of the body edge 1 a is also pushed further into the groove 6 , and this is also widened slightly, depending on the stability of the groove area 2 c. This leads to a slight deformation of the central region 2 d of the cover on the radially inner side to a spherical shape, and on the radially outer side to an inclined position of the outer leg of the groove region 2 c and of the connecting region 2 b.

However, this is compensated for by radial inward displacement of the cover edge 2 a by latching the latching tabs, and the existing possibility of movement of the cover edge relative to the groove region 2 c by the longitudinal extension of the connection region 2 b and / or the mobility due to the thinned transitions 17th and / or 18 of the connection area 2 b opposite to the adjacent areas.

In the perspective view of the assembled container, that is, a lid 2 placed on the body 1 with latching latches 33 , the stabilizing webs 22 on the lid 2 can also be seen, which extend radially and are distributed over the circumference between the highest elevation of the groove area 2 c the lid 2 and the lowered central area 2 d. These stabilizing webs 22 are also formed in one piece with the cover 2 , as are the latching tabs 33 . The same applies to the stabilizing webs 21 of the body 1 .

In addition, Fig. 4 shows in the broken area of the lid 2 and Fig. 1a, 1b that the body edge 1 a on the outside can be supported by additional stabilizing webs 23 which extend radially and at an angle between the outside of the body edge 1 a and the upward sealing surface 12 b of the ring flange 8 are. The radial extension outwardly and upwardly in the direction of the free end edge of the body 1 a has to be so limited, that this stabilizing webs 23 33 do not interfere with a complete snapping on the lid 2 including locking of the locking tabs.

REFERENCE SIGN LIST

1

Body

1

a body edge

2

cover

2

a lid edge

2

b Connection area

2

c Groove area

2

d central area

2

e process

3rd

a,

3rd

b clamping device

3rd

a groove

4

first sealing point

5

second sealing point
5a, b partial sealing point

6

Ring groove

7

Wall

8th

Ring flange

9

-

10th

Axis of symmetry
11a, b, c sealing web
12a, b sealing surface

13

back

14

back

15

Walkways

16

ground

17th

crossing

18th

crossing

19th

Spanut

20th

Longitudinal direction

21

,

22

,

23

Stabilization strategy

31

Locking projection

32

Rest recess

33

Locking tabs

34

free end

35

Guide surface
A Distance between covers
B Body distance

Claims (29)

1. Container with a body ( 1 ) and a lid ( 2 ) and a tensioning device for tightly tightening the lid ( 2 ) relative to the body ( 1 ), characterized in that
at least in the tensioned state, the cover ( 2 ) lies tightly against the body ( 1 ) on at least one continuous first sealing point ( 4 ) which runs around the axis of symmetry ( 10 ) of the container, and
the tensioning device ( 3 ) is axially spaced from the first sealing point ( 4 ). 2. Container according to claim 1, characterized in that the clamping device ( 3 ) is integrally formed on the lid ( 2 ). 3. Container according to one of the preceding claims, characterized in that the clamping device ( 3 ) consists of several, distributed over the circumference and spaced from each other clamping devices ( 3 a, 3 b, 3 c, ...). 4. Container according to one of the preceding claims, characterized in that the latching device consists of a radially projecting, in particular outwardly projecting, latching projection ( 31 ) and cooperating latching recess ( 32 ), the flanks of which are designed such that the cover ( 2 ) is pulled axially against the body ( 1 ). 5. Container according to one of the preceding claims, characterized in that the latching projection ( 31 ) on the outside of the body ( 1 ) is arranged set back from the free end of the body ( 1 ) and the intermediate cantilevered body edge ( 1 a) so dimensioned is that it can be elastically deformed by the tensioned cover ( 2 ), in particular can only be elastically deformed in the radial direction. 6. Container according to one of the preceding claims, characterized in that the locking projection ( 31 ) has a continuous circumferential flange ( 8 ) distributed separately over the circumference in the form of locking tabs ( 33 ). 7. Container according to one of the preceding claims, characterized in that the radially outwardly projecting annular flange ( 8 ) at several locations distributed over the circumference, at least in the subdivision grid of the latching tabs ( 33 ), by projecting radially outwards in the longitudinal direction ( 2 ), the direction of the axis of symmetry ( 10 ) of the container, extending stabilizing webs ( 21 ) which merge in one piece into the ring flange ( 8 ) is reinforced. 8. Container according to one of the preceding claims, characterized in that a second circumferential, annular axis of symmetry ( 10 ) of the container circumferential, in particular continuous, sealing point ( 5 ) spaced from the first sealing point ( 4 ) is present. 9. Container according to one of the preceding claims, characterized in that at the sealing points ( 4 ) or ( 5 ) or the partial sealing points ( 5 a, 5 b) each have a sealing web ( 11 ) with its outer surface, in particular with a linear shape Touch, presses against a sealing surface ( 12 ) and can be moved along this sealing surface ( 12 ) due to the tensioning by means of the tensioning device. 10. Container according to one of the preceding claims, characterized in that at the first sealing point ( 4 ) the sealing web ( 11 a) is the freely ending body edge ( 1 a) and the sealing surface ( 12 a) has a cross-sectionally V-shaped annular groove ( 6 ) in the underside of the cover ( 2 ). 11. Container according to one of the preceding claims, characterized in that the body ( 1 ) and the lid ( 2 ) each consist only of a single material, in particular plastic, in particular the same plastic. 12. Container according to one of the preceding claims, characterized in that the sealing points ( 4 ) and / or ( 5 ) are divided into partial sealing points ( 5 a, 5 b). 13. Container according to one of the preceding claims, characterized in that at the sealing point ( 5 ), the sealing surface ( 12 ) is arranged transversely to the axis of symmetry ( 10 ), outside the wall ( 7 ) of the body ( 1 ) arranged on the radially after the annular surface externally facing ring flange ( 8 ) and the sealing web ( 11 b) is a ring-shaped, integrally formed with the outer lid edge ( 2 a) sealing web. 14. Container according to claim 13, characterized in that the lid edge comprises two radially spaced, concentrically arranged sealing webs ( 11 b, 11 c) which rest on the same sealing surface ( 12 b) in the tensioned state, in particular the concentrically arranged to each other Sealing webs ( 11 b, 11 c) in the area of the locking tabs ( 33 ) are combined to form a single sealing web ( 11 b '), the radial extent of which is at least the sum of the radial extents of the sealing webs ( 11 b) and ( 11 c) in the peripheral region between corresponds to the locking tabs ( 33 ). 15. Container according to one of the preceding claims, characterized in that the lid edge ( 2 a), at least in the connecting region between the sealing webs ( 11 b, 11 c), is so stable that there is no significant deviation from the tensioning of the clamping device the ring shape of the lid edge ( 2 a) can be effected. 16. Container according to one of the preceding claims, characterized in that the sealing surface ( 12 b) extends perpendicular to the axis of symmetry ( 10 ). 17. Container according to one of the preceding claims, characterized in that the sealing surface ( 12 b) at an acute angle, in particular with a towards the open end of the body ( 1 ) facing sealing surface ( 12 b), radially from the outside inwards to the bottom of the Body ( 1 ) sloping down, is arranged. 18. Container according to one of the preceding claims, characterized in that the facing away from the flange (8) back side (13) of the lid edge (2 a) and pointing away from the cover back (14) of the flange (8) corresponding to the inner flanks of the annular groove ( 3 a) of the clamping ring ( 3 ) are conically shaped. 19. Container according to one of the preceding claims, characterized in that the conical rear side of the flange ( 8 ) of the body ( 1 ) is formed at least by webs ( 15 ) of the flange ( 8 ) distributed over the circumference, the webs ( 15 ) are in particular not present at the circumferential locations provided for receiving the locking tabs ( 33 ). 20. Container according to one of the preceding claims, characterized in that the latching tabs ( 33 ) have a downwardly projecting free end which is spaced from the outside of the body ( 1 ), in particular is spaced so far that it can be gripped with a finger can. 21. Container according to one of the preceding claims, characterized in that the latching tabs ( 33 ), in the radially inward side of which the latching recess ( 32 ) is formed, in the region of the bottom of the latching recess ( 32 ) has a lower material thickness than on both sides thereof . 22. Container according to one of the preceding claims, characterized in that the lid ( 2 ), viewed in cross section, radially from the inside outwards from a plate-shaped central area ( 2 d), a U-shaped axially outwardly curved groove area ( 2 c), an adjoining at its radially outer free end, annular connecting area ( 2 b) and the adjoining lid edge ( 2 a), which are integrally formed with each other and wherein the transition between the connecting area ( 2 b) to at least one of the adjacent areas has a smaller wall thickness than the other areas. 23. Container according to one of the preceding claims, characterized in that the lid edge ( 2 a) is arranged radially outside the connection area ( 2 b). 24. Container according to one of the preceding claims, characterized in that the connecting region ( 2 b) extends axially. 25. Container according to one of the preceding claims, characterized in that the free end of the body edge ( 1 a) as a sealing web ( 11 a) of the first sealing point ( 4 ) from the sealing surface ( 12 b) of the second sealing point ( 5 ) an axial Body spacing (B), which is slightly larger than the lid distance (A) of the groove base of the annular groove ( 6 ) from the free end of the sealing web ( 11 ) or ( 11 b) and ( 11 c) in the relaxed state of the lid. 26. Container according to one of the preceding claims, characterized in that the diameter of the body ( 1 ), measured from the center of the wall to the center of the wall at the free end, ie at the edge of the body ( 1 a), deviates from the diameter of the annular groove ( 6 ) of the lid ( 2 ), measured from the center of the groove base to the center of the groove base, and the diameter of the body is preferably larger than the diameter of the ring groove ( 6 ), so that when the cover is placed without tension, the cover with its outer ring groove flank on the edge of the body ( 1 a) sits on. 27. Container according to one of the preceding claims, characterized in that the wall thickness of the body ( 1 ) at the body edge ( 1 a), in particular from the flange ( 8 ) to the free end, is greater than between the flange ( 8 ) and the bottom ( 16 ) of the body. 28. Container according to one of the preceding claims, characterized in that the annular groove ( 6 ) has an intermediate angle between its outer flank ( 6 a) and its inner flank ( 6 b) of 5-50 °, in particular 10-30 ° . 29. Container according to one of the preceding claims, characterized in that in the relaxed state of the body distance (B) from the top of the ring flange ( 8 ) to the free end of the body edge ( 1 a) is less than the lid distance (A) of the bottom of the groove Annular groove ( 6 ) up to the radially upper flank of the locking recess ( 32 ) of the locking tabs ( 33 ) in the area of the locking tabs ( 33 ) and thus the free end of the sealing web ( 11 b) or ( 11 c) in the area between the locking tabs ( 33 ).