EP3325349A2

EP3325349A2 - Method, tool and assembly for tightly closing a receptacle, and tightly closed receptacle

Info

Publication number: EP3325349A2
Application number: EP16763313.0A
Authority: EP
Inventors: Peter HORZ
Original assignee: Ardagh MP Group Netherlands BV
Current assignee: Trivium Packaging Group Netherlands BV
Priority date: 2015-07-24
Filing date: 2016-07-25
Publication date: 2018-05-30
Anticipated expiration: 2036-07-25
Also published as: RU2724548C2; WO2017017588A3; CN108025820B; CN108025820A; WO2017017588A9; HUE056526T2; RU2018100144A; ES2899214T3; US20180297104A1; WO2017017588A2; BR112018000948A2; RU2765254C1; EP3325349B1; US11590554B2; RU2018100144A3

Abstract

The aim of the invention is to close a receptacle (1) comprising an opening (2) as tightly as possible while keeping the amount of material required for a closure (3) used for this purpose as low as possible. Said aim is achieved by a tool (10) that closes the opening (2) in the receptacle (1) by means of the closure (3). Said tool (10) comprises a tool plate (12) which is designed in such a way that it can be introduced into the opening (2) in the receptacle (1). The tool further comprises at least one roll (11) which is disposed on the tool plate (12). The at least one roll (11) can be deflected radially outward from a starting position into a closing position and returns into its starting position in order to temporarily apply a radial force to a rim (4) of the closure (3), said rim (4) being located between the at least one roll (11) and the inner face (5) of the receptacle.

Description

Method, tool and arrangement for tightly closing a container and sealed container sealed

The invention relates to the technical field of packaging technology, especially the field of sealing containers also for products with high demands on the tightness or sensitivity to contamination.

WO 1996/31 406 discloses a tin made of sheet metal, which is closed at one end face with a membrane by the prior art. Therein, raised edge regions of the membrane are glued or heat sealed to the inside of the can wall. Such sealed cans are made by inserting a membrane into an opening of the can and inserting a punch. By spreading the inserted punch a force acts radially on the raised edge region of the membrane, in conjunction with a heat so the membrane is connected to the inside of the can. In Figure 5a and 5b of the publication, this spreading is shown. The punch consists of circumferentially arranged elements which are pressed radially outward against a spreading or snap ring, whereby its

Diameter enlarged. For this, the spreading or snap ring on an axial gap to allow the mentioned radius increase. When the expansion or snap ring presses against the edge region of the membrane, no force acts on the region of the membrane to be connected at the location of the gap. This can lead to leakage of the closure, especially if the gap of the spreading or snap ring excludes the location of the vertical seam, which is typically present in the manufacture of cans of this type. Cans that are closed by this process are unsuitable for sensitive products such as (high-quality) coffee.

WO 1998/03 278 discloses a pressing device which consists of several pressed parts (cf figure 3 there). The pressing device is aimed at sealing comparable cans as in WO 1996/31406. During the radial extension of the pressed parts until they contact this with the membrane, which rests on the inside of the can, axial gaps form. No force is transmitted to the membrane at these recesses. Through several levels of Pressteilspalte a channel formation, as they occur in WO 1996/31 406 m uss to be avoided. Especially in the area of a vertical seam of a can to be closed, despite the gap offset of the pressing device, an axial channel can form between the membrane and the inside of the can, which adversely affects the tightness of the can. In addition, only a portion of the peripheral surface of the raised edge portion of the mem brane is fixedly connected to the inner side of the can (only in those places where force is actually transmitted radially from the pressing device to the diaphragm). As a result, a larger area is required when using the pressing device with the same tightness, compared with a device that covers the entire surface of the raised portion of the membrane connects to the can, resulting in increased

Material expenses and thus costs of the membrane leads.

Starting from the prior art, the invention has the object to close containers with the greatest possible tightness while keeping the material costs of a closure low.

This object is achieved by the tool according to the invention (claim 1), which can be used in a Verschließanordnung (claim 5) and by a method (claim 18 or 25 or 32) makes a container (claim 13) can be produced.

A tool according to the invention is suitable for closing an opening of a container, for example a can, with a membrane. For this purpose, the tool includes a

Tool plate on which at least one roller is attached. After preferably a closure is introduced into the opening to be closed, the tool can penetrate into a one-sided open space (limited by closure) in the container interior. At the desired axial position in the can, the at least one roller can be deflected radially in order to exert a force on the collar of the closure and to seal it, optionally under the influence of heat, in a sealing manner with the container inside. By a rotational ability of the tool can be connected with deflected role of the entire circumference of the collar with the container inside (claim 1). Radial returnability of the tool allows it to be easily removed from the container without damaging the sealing closure and within a short time a next container to be closed can be provided.

Several rollers attached to the circumference of the tool disc accelerate this

Closing a container and improve the closing result. During the rotation of a tool with deflected or extended rollers exerting a force on a locking collar, each roller must cover a smaller distance or no complete rotation (360 °) of the tool is necessary to cover the entire surface of the locking collar To have exercised power. For a sufficient tightness, it may be advantageous if each section of the closure collar is repeatedly contacted by one or more rollers, resulting in a rotation of more than 360 ° or, in the case of several rollers, proportionally according to the number of rollers. Two rolls, three rolls, four rolls, five rolls, six rolls, seven rolls, eight rolls or more than eight rolls can be effective (claim 2). By several rollers, the force acting on the container is partially absorbed by an opposing roller, and the container remains in a centered position (about the longitudinal axis of the container) during use of the tool. A possible simultaneous deflection of the rollers or contacting the rollers of the closure collar is advantageous. For several roles, it is also advantageous if the rollers circumferentially evenly or are arranged radially symmetrically. An odd number of rollers may be useful and depending on the roller diameter relative to the container diameter and more than eight rollers may be arranged in the tool. In the following, the terms role and roles are used equally; it is always at least one role.

Before an opening of a container can be closed, a closure is advantageously first introduced into the opening. For this purpose, a positioning element can be arranged on the tool (claim 3), whereby an introduction of a closure and of the

Tool can be performed in the opening of a container in one step. This one step can also consist of two or more sub-steps. Thus, for example, a closure located on the positioning element can first be introduced into the opening of the container by extending the element and, in a second partial working step, the tool can be tracked with the rollers.

The rollers can be deflected by a defined force. The deflection of the rollers can be pneumatic, whereby the force acting on the closure collar force can be controlled and controlled in a simple manner. A deflection of the rollers by pneumatic, mechanical, electrical, electromagnetic or other force-generating actuators can be deflected (claim 4).

The tool, even in an advantageous embodiment, can as an element of a

Be arranged closure. The arrangement further comprises at least one shaft, via which a torque can be exerted on the tool, which leads to a rotation of the tool (claim 5). Preferably, the shaft is also axially extendable, deflectable or movable to allow the introduction of the tool in the one-sided open space, bounded by the closure, and optionally the inside of the container (if the closure collar does not reach to the edge of the container), (claim 6 ).

Furthermore, the closure arrangement may comprise a lifting device (claim 7). On the lifting device, a container to be closed can be applied, wherein the opening to be closed of the container in the direction of the tool shows and

advantageously, the center axis of the container and the tool are superimposed. By an upward movement of the lifting device of the container to be closed is pushed over the tool, wherein the closure may be incorporated in the arranged on the lifting container or the closure on optional

Positioning element of the tool can be arranged. Furthermore, the

Lifting device hold a container thereon to prevent rotation of the container while the tool is rotating, and / or cause rotation of the container, after which the tool inside the container does not rotate during the closing, but can additionally rotate. By a lifting device, the axial Deflection of the shaft may not be necessary, as well as a combination of opposing movements of the lifting device and shaft may be advantageous.

If the closure arrangement is designed with a heating element (claim 8), an adhesive layer on at least the collar of the closure or the container inside can be softened during the rotation of the tool with deflected rollers.

Such a heating element can be arranged outside of the container to be closed or in the region of the tool plate, that is, during the closing operation in the interior of the container (claim 9).

In this case, the heating element is preferably an inductive element, electrical element or heat radiation element (claim 10). In an inductive element, the heating element is the element from which the inductive effect emanates, however, is not heated by the operation of inductive heating of this element, but another. Electrical elements provide the heat or heat directly in the generating element and transmit it directly. Thermal energy for softening a layer may be provided by a heat radiator (e.g., infrared, laser), preferably a heat radiator is mounted outside the container in the closure assembly.

The closure arrangement may preferably have a guide ring and a lifting device. The lifting device may be arranged so that a container, which has an opening to be closed, can rest. Through a movement of

Lifting the container can be moved over the tool (claim 11).

Preferably, the guide ring can record the container and position determined

spring-biased the container over the Verschließanordnung lead (claim 12).

A closed by the tool or by the closing arrangement container has a closure, the closure collar fully with the

Container inside is sealingly connected (claim 13). This allows the

Material costs are reduced with the same tightness over the prior art or an improved tightness can be provided with the same surface of the closure collar. Containers which are closed with the tool according to the invention or the closure arrangement according to the invention are suitable for highly sensitive products, such as, for example, high-quality coffee and moist products, because of their particularly high density or low susceptibility to contamination. Such containers can also be used under clean conditions (aseptic or autoclave with pressure equalization). Preferably container described here made of metal, glass, plastic or a composite material, more preferably are three-piece cans, the production-related have a vertical seam (claim 14). Typically, three-piece cans are made from a sheet metal blank into a hollow cylindrical shape with two lateral edges of the formed sheet partially overlapping. The overlapping area is typically welded, forming a seam. A bottom element is folded and optionally the hollow cylinder wall with

provided stabilizing beads. Especially in the field of vertical seam in a three-piece box tight sealing by a closure with collar has not been satisfactorily solved.

The sealing collar can be over a sealing wax or a hot melt with the

Can be connected inside the container (claim 15), for example, via a

Heating element is softened and solidifies after pressing against the inside of the container and the contact between the locking collar and the container inside

guaranteed.

If the height of the closure collar is greater than the axial distance of the introduction position from the opening edge of the container, a certain proportion of the closure collar projects beyond the front side of the container. This supernumerary share is over the frontal

Bordered edge region. Preferably, the projecting portion of the closure collar is less than 10%, less than 5%, less than 2% of the overall height of the closure collar, and most preferably, virtually no region of the closure collar is axially over the edge of the face with the aperture (claim 16).

Preferably, the closure may be connected to a container wall (inside or outside) by hot glue or sealing wax (claim 17).

For closing an opening of a container, such a container is first provided, the closure is inserted or inserted into the opening of the container and the tool (for example a tool disclosed herein) is introduced into the unilaterally open space of the container bounded by the closure , The at least one roller deflects radially, whereby a force on the at least one

Contact point of the roller with the locking collar acts and thereby the locking collar is pressed against the container inside. By a subsequent rotation of the tool, and thus a circumferential rolling movement of the at least one roller, in the course of a complete rotation (360 °), a force acts on each point of the closure collar, so that the entire closure collar is connected to the container interior (claim 18). Instead of rotating the tool, the container may also rotate, with the tool not rotating. It is equally possible that both the container and the tool rotate in opposite directions. It is essentially important that a relative rotation (peripheral

Relative movement) takes place between the container and tool to ensure that there is at least one full rolling movement on the locking collar with an acting force of at least one roller. Preferably, a plurality of rollers, for example two, three, four, five, six, seven, eight or more than eight rollers may be used in the method.

After fully pressing the closure collar, the at least one roll is returned to its original position and the tool is axially ejected from the space in the container above the closure. The correspondence of the axial basic shape of the container and the closure collar contains manufacturing tolerances. So should the

Basic forms should be as identical as possible, wherein the radial extent of the closure collar something (less than 5%) is smaller than the radial extent of the container, so that the closure is easily introduced into the container.

If the closure is heat-sealed or bonded to the inside of the container with a sealing lacquer, the layer is thermally softened or liquefied before or during the rotation of the tool (claim 19). The layer may be applied substantially over the entire area in the region of the closure collar or on one side of the closure.

The thermal energy is preferably supplied by transfer via the at least one roller and / or the closure of the layer (claim 20).

The closure is preferably introduced into the container by a positioning element, wherein the positioning element is arranged on the tool (claim 21). The introduction of the closure and the tool is particularly preferably carried out in one step, which consists essentially of an axial (longitudinal axis of the container) relative movement of the tool (with positioning) to the container. Either the tool can change its position and be introduced into the opening of the container or the container changes its position to the tool and takes this in itself.

For manufacturing purposes, containers, especially three-piece cans, have a circumferential step at the location where two lateral edges of the sheet overlap prior to welding. Often, this results in a lying in the container stage, which represents a trained upwards step when viewed circumferentially in a clockwise direction. When viewed circumferentially in the counterclockwise direction results in a trained down step. Preferably, the relative rotation is performed so that the at least one roller moves against an upwardly formed step (claim 22).

By the tool that can be used in the Verschließanordnung, according to the method for closing an opening of a container

inventive container are prepared (claim 23). A proposed method (claim 25) for closing may also work by rotating the container as well as rotating the tool (or both). This is u. A. provided

(c) axially inserting a keyed tool into a unilaterally open space that is oppositely bounded by the closure panel (the closure);

(d) deflecting at least one rotatable roller so that the at least one roller bears radially against the closure collar of the closure;

(e) applying a rotary relative movement of the tool (with the at least one roller bearing against the locking collar) and the container, whereby the closure collar is fastened to the container interior and the opening of the container is sealed.

In feature (e), the closure collar may be attached to the upper end portion of

Container inside (strip-shaped) are attached. Or the closure is lowered with the tool further into the container interior. The opening of the container can in any case be closed tightly, or there are two filling spaces that with

Food or Particularia can be filled, which help with the consumption of food in the other filling space or make it possible.

The following examples illustrate and supplement the claimed invention.

The embodiments of the invention are illustrated by way of example and not in a manner in which limitations of the figures are transferred or read into the claims. Like reference numerals in the figures indicate like elements.

FIG. 1 is a perspective view of a tool 10.

FIG. 1 a is a clearer illustration of the tool 10 from FIG. 1.

FIG. 2 a shows the tool 10 as a plan view in a plan view

Detail of an enlargement. A roller 11 is located in

a starting position 13.

FIG. 2b shows, in a plan view, the tool 10 schematically as

Detail of an enlargement. A roller 11 is located in

a closing position 14.

Figure 2c shows in a plan the behavior of a layer 7, after

this was thermally softened and at least a role 11

Press the closure collar 4 to the container inner side 5.

Figure 2aa and Figures 2bb and 2cc are closer representations of

Schemes of Figures 2a, 2b, and 2c. The elements are

functionally the same, only shown here more geometrically.

FIG. 3 is a perspective view of a tool 10 at an angle

from below with a positioning device 15 for the

Closure.

FIG. 3 a is a perspective view of the tool 10

Figure 3 obliquely from above with the positioning device 15 for

the closure 4. The elements are functionally the same, only here

shown more precisely geometrically

Figure 4 shows a perspective view of a

Closing arrangement 20.

FIG. 5 shows a perspective view of a

Closing arrangement 20 with a container 1 and a

Lifting device 22.

FIG. 6 is a perspective detail view of a

Closing arrangement 20 with a container 1. Figure 6a illustrates the container centering bevel 28 from the

FIG. 6.

FIG. 7 shows in a sectional view a container 1 of which one

Opening 2 with a closure 3 on the container inner side. 5

is provided.

Figure 7a shows a perspective view of the container 1 with a

To be used closure 3. A tear tab 3b is close

the collar 4 attached to the bottom 3a of the closure 3.

FIG. 8 shows in a sectional view a container 1 of which one

Opening 2 with a closure 3 on the container outer side. 8

is provided.

An example of the invention is the tool 10 in FIG. 1. The centering ring 25 shown in this figure is not an element of the tool 10.

The tool 10 comprises in this embodiment, a plurality of rollers 11 which are arranged circumferentially uniformly on the outer edge region of a tool plate 12. The roles

11 are preferably cylindrical, with a height Hll which substantially corresponds to the height H4 of a closure collar 4 according to FIG. Preferably, the rollers are made of a metallic material, particularly preferably of a metal, which is easily heated inductively. The peripheral surfaces IIa of the rollers 11 are preferably formed smooth, as well as a coating may be applied, for example a

Rubber or similar, or the rollers are made of a plastic.

Each of the rollers 11 is via a boom 16a and a hinge 16 with the tool plate

12 connected. Furthermore, the rollers 11 are connected along their jew. Longitudinal axis jew. With a roller shaft 17 which is connected via a jew. Connecting element 19 jew. With a rod 18 (a plunger). A lifting device 19a makes each of the rod 18 extendable and retractable. For such a movement, the lifting device 19a can extend the rod 18 both in the radial direction as well as opposite, in negative radial direction (in the direction of the interior of the tool plate) retract.

The movement of the respective rod 18 can be forwarded via the respective connecting element 19 to the respective roller axis 17, whereby each roller 11 can be retracted and extended independently.

If the roller 11 is extended or deflected, one acting on the roller 11

Counterforce of the lifting device 19 a (via the rod 18, the connecting element 19 and the roller shaft 17) are received. The respective joint 16 guides and supports the movement of the respective roller (via a connection of the boom 16a with the roller axle 17 and the hinge 16) during extension and retraction or during deflection and steering.

It is obvious to the person skilled in the art that such a tool 10 can also be designed in a different way, the aspects of the retractability and extensibility of each of the rollers 11 and the possibility of being able to absorb a force in the extended position carry the function.

FIGS. 2a and 2b (also FIGS. 2aa and 2bb) show the working capability of the tool 10 in a plan view. In an initial position 13 (Figures 2a and 2aa) of the roller 11, the outermost portion of the roller 11 is located radially within the outermost portion of the tool plate 12. Thus, a tool easily into a container 1 can be introduced, wherein the introduction of the tool 10 by a movement of the Tool 10 in the direction of the container 1, by a movement of the container 1 in the direction of the tool 10 or by an opposite movement of the tool 10 and the container 1 is possible.

In a Verschließposition 14 (Figures 2b, 2bb), the roller 11 is extended or deflected a piece. Thus, the outermost portion of the roller 11 is located radially outside, at least partially, of the tool plate 12. If the tool 10 in a container 1 with an introduced closure 3, in this role position, a force between the roller 11 (its shell IIa) and the Closure 3 act, whereby the closure 3 can be pressed in the region of the closure collar 4 and the axial contact strip of the rollers 11 with the closure collar 4 to the container inner side 5. By a rotation of the tool 10, and thus the roller 11, as long as the rolling resistance is overcome, the contact point between the roller 11 and the locking collar 4 is circumferentially displaced, so that upon a full rotation of the tool 10, each point of the locking collar 4 is pressed against the container inner side 5 is. In this case, each point of the closure collar 4 designates any location accessible to the roll 11.

If multiple roles 11 are provided, the previous paragraphs should be read in plural.

Preferably, a layer 7, which is formed as an adhesive layer or connecting layer, is located between the closure collar 4 and the container inner side 5.

The layer 7 may be applied to one side of the closure 3 or may also be applied to the surface of the container inner side 5.

The layer 7 is preferably a sealing wax or a hot melt adhesive, more preferably the layer 7 comprises a polyethylene and / or polypropylene containing material. Such materials can be softened to liquefied by heating; after solidification or solidification, these materials combine the elements contacted during softening or liquefaction, such as the container wall

(Container inside 5 and / or container outside 8) and the closure collar. 4

Before or during the rotation of the tool 10 relative to the container 1 is the

Softening or liquefaction brought about thermally, so that at the point where the roller 11 the closure collar 4 contacted a softened or liquefied

Material layer is present. By circulating the roller 11 along the circumferential closure collar 4 with each flowable material forms a collection of material or a material shaft 33 between the closure collar 4 and the container inner side 5, which is driven by the movement of the roller 11 in front of the direction of movement. Such a material shaft 33 is not a salient wave, but is a region of greater thickness of the layer 7 in a flowable state (thermally softened or liquefied) compared to the originally present thickness on one side of the

Closure collar 4 or the container inside 5.

This is illustrated schematically in Figure 2c, geometrically more accurate in Figure 2cc. By a radially acting force, which is applied by the roller 11 on the closure collar 4, the layer 7, as a flowable material, after the roller 11 has passed this area, slightly thinner than the initially existing layer 7. Excess material of the layer 7th drives the roller 11 in the form of a material shaft 33 in front of him. This behavior is preferably desired because the excess material unevenness, especially wells, the container inner side 5 can be compensated.

The vertical seam 31 of a three-part can is particularly preferably filled up by the formed material shaft 33 in such a way that the closure collar 4 is sealingly connected to the container inner side 5 even in this sensitive area. As a result, these locations are also covered by the roller 11, as mentioned above.

Preferably, the roller 11 moves in the direction of the vertical seam 31, in which a step in this area represents a step formed upward in the direction of the roller 11 (roller moves eg in the circumferential direction, the step of the seam 31 rises in front of it in negative r-direction). The opposite direction, in which a trained in the direction of view of the roller 11 as a step down area is sealed or glued is also possible.

Likewise, this effect is desirable in the sealing of glass containers which

typically have a production-related longitudinal seam.

Figure 3 shows an embodiment of the tool obliquely viewed from below (Figure 3a obliquely from above). From this perspective, an optional positioning element 15 recognizable, which is arranged below the tool plate 12, so that the rollers 11 in the tool 10 axially between the positioning member 15 and the bottom of the

Tool plate 12 is arranged. The positioning element 15 is designed such that it can receive and hold a closure 3 (with panel 3a and collar 4). If the tool 10 moves into a container 1, the closure 3 and the at least one roller 11 mounted on the tool plate 12 are simultaneously introduced into the container 1. This results in a time savings in the closing process and sources of error by a further step can be avoided.

In the positioning element 15 open guide ways 15a are provided at the edge, which extend arcuately (on a respective circular path about the respective joint 16 at a distance of the respective arm 16a). In the guideways, the rollers 11 can be guided when a respective lower pin 17a of the respective roller axis engages in the respective track 15a.

4, a closure assembly 20 is shown that includes a tool 10. On the tool 10, a shaft 21 is arranged so that it has a torque on the

Tool can transmit, due to which the tool 10 rotates. The movement is provided by a drive 27 and transmitted via a transmission element 26 to the shaft 21.

Another embodiment of a closure arrangement is shown in FIG. Here a drive 27a is arranged on a lifting device 22 so that a rotation of the container 1 takes place after the tool 10 has been introduced into the container. The tool does not rotate here, but a circumferential relative movement is achieved (of rollers 11 and container 1).

Fig. 6 shows the irrespective of the embodiment of the closure assembly 20

Functioning of a centering ring 25. This is designed as a ring and its lower inner edge has an upwardly extending bevel 28, so that the ring hole diameter is smaller at the top than below, with a container 1 is moved from bottom to top in the direction of the centering ring 25. The chamfer 28 in the centering ring 25 causes a not sufficiently accurately positioned container 1 is deflected by a relative movement of the centering ring 25 to the container 1 by an axial movement radially until a sufficient centering of the centering ring 25 and the container 1 is present.

Since the centering ring 25 is preferably centered with the tool 10 within the

Closing arrangement 20 is arranged, thus a centering of the container 1 and the tool 10 is ensured.

In order to close a container 1, should - in a rotation of the

Tool 10 - the container 1 are protected against rotation. With others Words, a torque that the container 1 inevitably upon rotation of the

Tool 10 is transferred with deflected roller 11, must be recorded, otherwise the container 1 rotates during the closing operation about its longitudinal axis, which in turn leads to undesirable adverse effects when closing. Therefore, the container 1 is clamped between the chamfer 28 of the centering ring 25 and an element on which the container 1 stands with a small force. In any case, the force is sufficient to generate a frictional force between the chamfer 28 of the centering ring 25 and the rim 32 of the container or between the container bottom and the element thereon, which can counteract the torque during closing without a rotation of the container 1 takes place.

Figure 6a illustrates the bevel 28 at the inner, lower edge of the centering ring 25. This is here divided into two functional sections, an outer retaining ring 25a and an inner ring 25b, the thermal energy "thE" or magnetic fields emitted to the container out to the attachment point or to heat the layer 7.

FIG. 7 shows an exemplary embodiment of a container 1. A closure 3 is connected via a closure collar 4 to the container inner side 5 of a container 1. Therein, the entire surface of the closure collar 4 is firmly connected with, for example, the upper edge strip of the container inside. The surface of the closure collar 4 results from its height H4 and its circumference. The bottom of the closure 3 is the panel 3a.

In the context of the invention, a connection of a closure 3 may also be attached to the container outer side 8. Such an embodiment is shown in FIG. In this case, the closure 3 is arranged in the container interior 6 and a first region of the closure collar 4 contacts the container interior 5. In addition, a second region of the closure collar 4 is arranged lying over an edge 32 of the container 1 and firmly connected to the container outer side 8. The height H4 of the

Closure collar 4 must be sufficiently large to span a container inner side 5 and a container outer side 8 of the container 1 (including the edge 32). Specifically, the sealing of such a designed sealed container 1 at the

Container outside 8 provided.

In order to produce such a result, a tool 10 must be modified only slightly, in such a way that a roller 11 can exert a force radially from outside to inside. Preferably, a container 1 according to this embodiment is sealed so that a holding element 24 is introduced into the space of a container 1 so that during pressing, and optionally heating, the closure collar 4 is stabilized by the outside of the can closure 3 inside. The holding element 24 has for this purpose a basic shape which corresponds to the basic shape of a container 1 to be closed. In this case, the radial extent of the basic shape of the holding element 24 is a little (less than 5%) less than the radial extent of the basic shape of the container 1 to the holding member 24 easily in the space above the

Closure 3 bring. In this case, the holding element 24 can take over the function of a positioning element 15, so that a closure 3 by the

Positioning element 15 is placed in a container 1 and the positioning member 15 remains during the pressing of the closure collar 4 to the container outer side 8 at the position which it has assumed to position the closure 3.

In general, various containers 1 can be closed by the proposed tools 10 or the closing arrangement 20 with the tool 10, if appropriate, according to the described method. In addition to differences in the materials, the containers 1 can also differ considerably in their shape, so it is also possible to seal 1 oval or polygonal container 1 next to cylindrical containers. The same applies to one-piece and multi-part (such as three-piece cans) container 1. During the closing process, a container to be closed 1 is preferably already filled with a filling material.

Depending on the material of a container 1 different arrangements of a heating element 23 are preferred. Thus, it is preferable that the heating element 23 in the form of a

Heat radiator, e.g. as a laser or infrared radiator, to act from the outside (outside of a container 1), which is useful especially in metal containers. For plastic or composite material containers 1, it is preferable that the heating element 23 within the

Tool 10 (between the region of the tool center point and the roller 11) to arrange.

When using an inductive element, the roller 11 can be heated, which gives the heat to the layer 7 to be softened. The closure 3, which preferably comprises an aluminum component, can also be heated by an inductive element as the heating element 23. An electrical element as a heating element 23 can provide heat outside of the container 1 in the case of metal containers 1, the same applies to container 1 made of glass. In the case of thermally sensitive materials of the container 1, provision of heat from the inner region is in principle preferred. If containers 1 are sealed on the outside of the container 8, the preferred position of a heating element 23 is reversed, so that inside preferred positions are preferred on the outside and vice versa.

In a further embodiment, an alternating direction of rotation of the roller 11 may be advantageous, so that during the pressing of the closure collar 4 on the

Container inside 5 or the container outer side 8 of a container 1 takes place a roller movement in the clockwise direction and at a pressing of a closure collar 4 at a container wall of a next container 1 takes place a roller movement counterclockwise or vice versa. Likewise, during the pressing of a closure collar 4 on a container wall (inner side 5 and / or outer side 8) of a container 1, a direction of rolling movement can be changed so that a rotation of a tool 10 with the roller 11 first takes place in the clockwise direction and, on the same closure 3 , then counterclockwise or vice versa.

In addition to a fastening of a closure 3 to a container wall 5, 6 by a hot melt adhesive or a sealing lacquer, in preferred embodiments of the invention, the closure collar 4 is thermally joined to a container wall 5, 6. For example, this can be done by soldering or welding.

In a further embodiment, a closure assembly 20 may include an anvil. The counter-holder is mounted on one side of a container wall on which the roller 11 is not located. If a container 1 is closed by a closure collar 4 is connected to a container inner side 5, the counter-holder is located on the associated container outer side 8 at. If a closure collar 4 is connected to a container outer side 8, the anvil bears against the associated container inner side 5. The counter-holder can counteract a force acting on a roller 11 on a wall of a container 1, whereby a possible deformation of the basic shape of the container 1 can be prevented.

Claims

claims

1. A tool for closing an opening (2) of a container (1) with a

Container inside (5) through a closure (3), wherein the tool (10) comprises:

(A) a tool plate (12) in an opening to be closed

(2) a container (1) can be introduced;

(B) at least one roller (11) on the tool plate (12) in a

Starting position (13) is arranged, wherein the at least one roller (11) is radially deflected into a Verschließposition (14) and in its initial position (13) is zurückbringbar to time

limits a radial force on a between the at least one roller (11) and the container inner side (5) arranged closure collar (4) of the closure (3) to make or exercise exercisable.

2. Tool according to claim 1, wherein on the tool plate (12) has two rollers (11), three rollers (11), four rollers (11), five rollers (11), six rollers (11), seven rollers (11) eight Rolls (11) or more than eight rollers (11), preferably circumferentially evenly distributed on the tool plate (12) are arranged.

3. Tool according to one of claims 1 or 2, wherein the tool a

Positioning element (15), whereby a closure (3) in the container (1) can be introduced.

4. Tool according to one of claims 1 to 3, wherein the roller (s) (11) are deflectable by a defined force, preferably by pneumatic, mechanical, electrical, electromagnetic or other force-generating actuators are deflected.

5. A closure assembly with a tool according to any one of claims 1 to 4, wherein the closure assembly (20) further comprises a shaft (21) which is connected to the tool (10) so that a torque on the tool (10) is transferable ,

6. Closing arrangement according to claim 5, wherein the shaft (20), in addition to

Transmission of a torque on the tool (10), axially displaceable or extendable.

7. Closing arrangement according to one of claims 5 or 6 with a lifting device (22) which is arranged so that a container (1) with an opening to be closed (2) can rest and by a movement of the lifting device (22) the tool ( 10) of the container (1) with the opening (2) is receivable.

8. Closure arrangement according to one of claims 5 to 7 with a heating element (23).

9. closing arrangement according to claim 8, wherein the heating element (23) between the center axis of the tool plate (12) and the roller (11) or the rollers (11) is arranged or radially outside of the container (1) is arranged.

10. Closing arrangement according to one of claims 8 or 9, wherein the heating element (23) as an induction element, as an electric heating element or as

Heat radiation element is formed.

11. Closing arrangement according to one of claims 5 or 6 with a guide ring (25) and a lifting device (22), wherein the lifting device (22) is arranged so that a container (1) with an opening to be closed (2) can rest and by a movement of the lifting device (22) of the container (1) on the tool (10) can be moved.

12. Closure arrangement according to claim 11, wherein the guide ring (25) can receive the container (1) in a positionally determined manner and can guide the container over the tool (10) in a spring-biased manner.

13. A container with a closure (3), the at least one opening (2) of the container (1) sealingly closes, wherein the closure (3) has a closure collar (4), which as a raised edge of the closure (3) with an entire circumferential surface is sealingly connected to a contacting portion of the container inner side (5).

14. A container according to claim 13, wherein the container (1) made of metal, glass, plastic, or a composite material, in particular, the container (1) is a box, especially a three-piece box with at least one opening (2) and a vertical Seam (31).

15. A container according to any one of claims 13 or 14, wherein the closure collar (4) of the closure (3) with a portion of the container inner side (5) by a

Hot glue or a sealing wax is connected.

16. A container according to any one of claims 13 to 15, wherein an upper portion of the

The upper flared portion is less than 10%, more preferably less than 5%, more preferably less than 2% and most preferably practically no region an axial total height of

Locking collar (4).

17. A container according to any one of claims 13 or 14, wherein the closure (3) with a container wall (5, 6) is connected by hot melt adhesive or sealing wax.

18. A method for closing an opening (2) of a container (1), in particular a can, with a container inner side (5) and a container interior (6), the method comprising the steps:

(A) providing a container (1) with at least one to

closing opening (2);

(B) introducing a closure (3) in the opening to be closed

(2) of the container (1), wherein the closure (3) one of the

Container interior (6) pointing away locking collar (4) whose axial basic shape corresponds to the axial basic shape of the container (1);

(C) introducing a rotatable tool (10) in a one-sided

open space bounded by the shutter (3);

(d) Radially deflecting at least one rotatable roller (11), such

that the at least one roller (11) radially on the closure collar

(4) of the closure (3) is applied;

(e) rotating about the longitudinal axis of the rotatable tool (10) with

the roller (11) resting against the closure collar (4) relative to the container (1) or vice versa and securing the latter

Closing collar (4) on the inside of the container (5), whereby the opening (2) is closed.

19. The method according to claim 18, wherein a layer (7) on one side of the

Closure collar (4) is placed, which is brought into contact with the container inner side (5), and is thermally liquefied before and / or while the rotatable tool (10) relative to the container (1) or vice versa rotates.

20. The method according to claim 19, wherein the thermal energy for liquefying the layer is transferred to the layer by heating at least one roller (11) and / or the container (1) and / or the closure.

21. The method according to any one of claims 18 to 20, wherein the closure (3) via a rotatable tool (10) arranged positioning element (15) is introduced into the container (1), in particular the rotatable tool (10) and the

Closure (3) simultaneously introduced into the container (1).

22. The method according to any one of claims 18 to 21, wherein the on the closure collar (4) fitting roller (11) by the rotation of the rotatable tool (10) or the container (1) rotates clockwise or counterclockwise, so that the Roll (11) moves against an upwardly trained step.

23. The method according to any one of claims 18 to 22 for closing an opening (2) of a container (1) according to any one of claims 13 to 17, with the tool according to one of claims 1 to 4 and / or the closure arrangement according to one of claims 5 until 12.

24. The method according to any one of claims 18 to 21 or 23, wherein the at the

Closing collar (4) adjacent roller (11) by the rotation of the rotatable tool (10) or the container (1) rotates clockwise or counterclockwise, so that the roller (11) moves against a downwardly formed step.

25. A method for closing an opening (2) of a container (1) with a

Container inside (5) and surrounded from the inside as an inner surface container interior (6), the method with the steps ...

(A) the container (1) has at least one opening to be closed

(2);

(B) introducing a closure (3) in the opening to be closed

(2) of the container (1), wherein the closure (3) one of the

Container interior (6) pointing away closure collar (4) and a closure panel (3a), the circumferential

Basic shape of the circumferential basic shape of the container (1) in its at least upper portion corresponds;

(C) axial insertion of a closure tool (10) in one

one-sided open space, which is bounded opposite by the closure panel (3a);

(D) deflecting at least one rotatable roller (11), so that the

at least one roller (11) rests radially on the closure collar (4) of the closure (3);

(e) applying a rotating relative movement of tool (10)

with the roll (11) resting against the closure collar (4) and the container (1), whereby the closure collar (4) on the

Container inside (5) is fixed and the opening (2) of the container (1) is sealed.

26. The method of claim 25, wherein a layer (7) on one side of the

Closing collar (4) is mounted, which is brought into contact with the container inner side (5), and is thermally at least softened before and / or during the rotating relative movement.

27. The method of claim 26, wherein a thermal energy for softening the layer (7) by heating the at least one roller (11) and / or an upper portion of the container (1) and / or the closure (3) on the layer is transmitted.

28. Method according to claim 25, wherein the closure is introduced into the container by means of a positioning element arranged on the tool, in particular the tool and the closure. be introduced simultaneously into the container (1).

29. The method according to any one of the preceding claims 25 et seq., Wherein the on the

Closing collar (4) adjacent roller (11) by relative movement of the tool (10) and container (1) is driven to rotate, so that the roller (11) moves towards an upwardly formed step (31).

30. The method according to any one of claims 25 to 28, wherein the roller (11) resting against the closure collar (4) is rotationally driven by relative movement of the tool (10) and container (1), so that the roller (11) rests on a moved down trained level.

31. The method according to claim 25, wherein in feature (e) the closure collar (4) is attached to the upper end portion of the container inner side (5) and the opening (2) of the container (1) is sealed.

32. The method according to any one of claims 25 ff for closing an opening (2) of a container (1) with one or more of the following elements ...

the container (1) according to one of claims 13 to 17,

with the tool according to one of claims 1 to 4,

the closure arrangement according to one of claims 5 to 12.