NL8601917A - HOLDER WITH LID. - Google Patents

Description

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Curver Packaging B.V. te Ede Inventor: Adrianus J.VI. Markus in Ede -1- PN 5587

HOLDER WITH LID

The invention relates to a container with a lid, of which at least the container is manufactured from plastic and comprises a container bottom and an upright container wall, and wherein the mouth of the container and the lid are provided with mutually co-acting closing and locking means.

Numerous such container lid systems have been proposed over the past decades and have become known, for example, from German Offenlegungsschrift 1936687.

The use of containers with plastic lids for packaging purposes has taken off with the development of machines for automatically filling the containers and applying the lids to the containers. In the latter operation, the lids usually fall horizontally from a stock warehouse onto the filled containers, after which the lids are pressed onto the containers in a subsequent step. A drawback of the known container lid systems is that the lid does not center sufficiently on the container when it falls loose on the container, so that during pressing there are disturbances that occur at the current speeds with which the containers are filled and provided with lids. 20 mean major production losses.

The object of the invention is to provide a container with a lid, the lid of which centers itself centrally on the container and wherein, after pressing the lid on the container, a sealing and locking between the container and the lid which, according to current concepts, is obtained, which two functions are optimally and can be fulfilled separately.

This is obtained in that the closing and locking means of the lid are at least formed by a rotationally symmetrical lower lid wall part, viewed in the closed position of the lid, and a rotationally symmetrical upper lid wall part, of which lid wall parts the 8601S 7.

X

; Areas of their horizontal cross-sections increase upwards and which cover wall parts are separated from each other by the mouth of an upwardly directed groove, the inner and the outer groove wall of which merges into the lower and upper cover wall part, respectively, and in that the closing and locking means of the container at least consist of a gutter-shaped channel arranged upwardly around its mouth with an upright outer channel wall, an upright inner channel wall and a channel bottom, the outer channel wall of which is provided with a snap rib on its inner side, such that in case of a the container-mounted lid, an upper part of the inner channel wall lies snugly enclosed in the groove of the lid, and the free peripheral edge of the upper lid wall part engages under the snap rib with some tension.

A locking and locking system thus constructed between a container and a lid has a lid which makes maximum use of the centering possibilities of that part of the lid that is available for this. Even with a relatively far decentralized position of the lid relative to the container mouth, a correct centering is initiated when the lid is pressed, after which countersinking, sealing and locking follow. The container is closed off by enclosing an upper part of the inner channel wall in the groove. In this way an attractive wide sealing seam is obtained which is equal to the inner circumference of a cross section perpendicular to the groove. The groove further offers the advantage that it allows some dimensional tolerance of the lid, which is of great value, especially when injection molding in plastic, for obtaining a good fit of the closing and locking means of the system. A further advantage of the lid is that the upright lid wall is not only functional when centering, but also ensures that after its free circumferential edge has been placed under the snap rib, a downward pressing force is exerted on the entire lid, so that the quality of the the closure is improved. A further advantage of the lid is that with different embodiments of the container, as will be discussed hereinafter, the dimensions of the lid are the same, so that use is always 860 1 9 1 7

a

-3- same lid is possible. The design of the sealing and locking system has the important advantage that, in the closed condition of the container, a free space remains between the top lid wall part and a part of the inner circumference of the outer channel wall, the inner channel wall and the channel bottom. This space can be made accessible from the outside by providing one or more openings in the outer channel wall and / or in the top cover wall part between the groove and the free circumference of the top cover wall part.

Through these openings, a tool can be inserted through the free space up to 10 below the top lid wall part for lifting the lid.

According to a first embodiment of the container according to the invention, the outer channel wall forms part of the upright container wall. The channel then located on the inside of the upright container wall 15 offers the advantage of a completely smooth outer surface for printing the container, as is particularly desired with the containers used in the paint industry. The high sealing and locking quality of the system also makes this holder and lid ideal for packaging paint. Due to a substantially 20 cylindrical design of the upright container wall, this embodiment can therefore be applied to the existing filling lines.

A second embodiment of the container according to the invention is that in which the inner channel wall forms part of the upright container wall. The channel then located on the outside of the upright container wall makes it possible to nest containers whose horizontal cross-section from the container bottom towards the mouth gradually increases, which offers advantages in the transport of empty containers. These containers are mainly used in the packaging of latex paints because of the relatively wide mouth of these containers, which facilitates access for wide brushes.

A third embodiment of the container according to the invention is that in which the cylindrical or non-cylindrical upright container wall connects to the channel bottom at a location between the inner and outer channel wall. The channel then lying on the upright container wall represents a compromise between the first and second embodiments and the advantages mentioned there. An important advantage means 8601917! -4- '4 this version when pressing the lid, whereby the forces can be better transferred to the solid surface via the upright container wall. Moreover, the undercut on the inside of the holder is smaller compared to the first embodiment, which can mean an advantage in terms of mold technology. Furthermore, the filling degree of this container can be higher.

The snap rib is advantageously located near the free edge of the outer channel wall. The thickening snap edge thus reinforces this damage-prone edge.

The rotationally symmetrical bottom cover wall part and the rotationally symmetrical top cover wall part can lie in the same conical surface, so that a practically continuous sliding surface is created which promotes centering. It may furthermore be advantageous to give the conical surfaces, in which the lower and the upper lid wall part 15 lie, a radial jump relative to each other, so that a stop edge is created. It can be particularly advantageous here that when the lower lid wall part lies in a first conical surface and the upper lid wall part lies in a second conical surface, the second conical surface has an inwardly directed radial jump with respect to the first conical surface relative to the first conical surface. In this way, with a skewed lid, where the lid is pressed in from the top point, the diametrically opposite side is slid upwardly to the jump, so that the inner channel wall is more easily received by the groove.

The rotationally symmetrical bottom cover wall part and the rotationally symmetrical top cover wall part can lie in the same spherical plane. In this way, the sliding of these walls into the circular free edge of the inner channel wall is optimized. Here too, a practically continuous sliding surface is created which promotes centering. For the same reasons as indicated above with the conical surfaces, it may be advantageous with the spherical surfaces if the spherical surfaces make a radial jump relative to each other. If the lower lid wall part lies in a first spherical plane and the top lid wall part lies in a second spherical plane, it can be particularly advantageous if the second spherical plane has a radially inwardly directed jump relative to the first spherical plane.

8601917 i- -5-

The already mentioned free space in the channel under the top lid wall part is also suitable for accommodating the studs of a carrying handle, which studs can be inserted through two diametrically opposed holes in the outer channel wall. The application of protruding and thereby annoying ear blocks is thus avoided.

Both the container and the lid can be injection-molded from plastic from suitable (co) polymers such as polymers of ethylene, propylene, copolymers of ethylene and propylene or mixtures of one of these substances.

It may be advantageous to manufacture the lid from a plastic other than that of the container. For example, it may be desirable to manufacture the container from a relatively stiffer plastic than that from which the lid is made to provide a better fit of the inner channel wall in the groove.

The lid can be made of a metal. This offers, inter alia, the advantage that if the above-mentioned opening for inserting tools is located in the top lid wall part, the lid is less damaged when it is lifted. A metal lid can furthermore offer the advantage that the acceptance as paint packaging by the paint industry is easier because the filling lines only need to be adjusted partly. Psychological reasons can also play a role in industry and consumers for making this container and lid combination more quickly adopted.

The invention will be explained in more detail with reference to some exemplary embodiments shown in the drawing.

In the drawing is:

Fig. 1 is a half axial section of a container and lid in a separated state according to the invention;

Fig. 2 is a half axial section of the container and lid of FIG. 1 when closed;

Fig. 3 is a top view of the lid in FIG. 1;

Fig. 4 is a top view of the container in FIG. 1; FIG. 5 is a half axial section of a container and lid in a separated state of a second embodiment according to the invention; 860 19 17 -6- (

Fig. 6 is a half axial section of the container and lid of FIG. 5 when closed;

Fig. 7 is a top view of the container in FIG. 5;

Fig. 8 is a half axial section of a container and lid in a separated state of a third embodiment according to the invention;

Fig. 9 is a half axial section of the container and lid of FIG. 8 when closed;

Fig. 10 is a top view of the container in FIG. 8;

FIG. 11 is an enlarged representation of the dotted section XI

in fig. 2;

Fig. 12 is a large-scale view of the dotted section XII in FIG. 6 and

Fig. 13 a-d show a schematic representation of some lid embodiments 15 according to the invention.

In the figures, like reference numerals designate like parts.

In FIG. 1 shows a container with a bottom 1, an upright container wall 2, a gutter-shaped channel 3 with an outer channel wall 4, a snap rib 5, a channel bottom 6, an inner channel wall 7 and a mouth 8. The parts 3, 4/5 and 6 form the locking and locking means of the container. Also fig. 1 a lid associated with the container with a middle part 9 which changes via a bend 10 into a rotationally symmetrical lower lid wall part 11 and a rotationally symmetrical upper lid wall part 14. The surfaces of the horizontal cross-sections of the wall parts 11 and 14 both increase in upward direction. The lid wall parts are in fig. 1 in the same conical plane. The lid wall parts are separated from each other by the mouth of a groove 13 of which the inner and the outer groove wall merge into the bottom 11 and top 14 lid wall parts, respectively. The top lid wall part 14 ends in a free circumferential edge 12. The different embodiments of the lid are described with reference to Figs. 13 further explained.

If the lid is moved downwards, even when the axes of the lid and holder are not in line with each other, 8601§17 -7-

Therefore, in case of tilt and / or decentralization of the lid relative to the holder, the lid still finds its way until the position is reached as in Fig. 2, the inner channel wall 7 being enclosed in the groove 13 of the lid, thereby sealing the container 5 and the free circumferential edge 12 engaging snap rib 5 and thus locking the lid. The dimensions can be such that the top lid wall part 14 is under some tension between the free circumferential edge 12 and the groove 13, whereby the lid is pressed firmly onto the holder.

FIG. 3 is a top plan view of the lid 11 associated with the container in FIG. 1 and 2, while this illustration also applies to the embodiments of the holder according to FIG. 5 and 6 resp. Fig. 8 and 9.

In FIG. 4 the top view of an open container is further clarified.

The operation of the embodiment according to FIG. 5, 6 and 7 as well as that of the embodiment according to FIG. 8, 9 and 10 will be apparent after the above explanation of the embodiment of FIG. 1, 2, 3 and 4.

The arrangements made for opening the lid are for two embodiments in Figs. 11 and 12 indicated. In

Fig. 11, an opening 15 is shown, one or more of which may be provided in the outer channel wall 4. The free space 3 bounded by the top lid wall part 14, the outer channel wall 4, the channel bottoms 6 and a part of the inner channel wall 7 is now accessible from the outside through the hole 15, through which a piece of tool 16, for example a screwdriver, can be inserted below part of the lid indicated by reference numeral 17. The lid can then be lifted from the holder by leverage of the tool 16 in the direction indicated by A.

In FIG. 12, the free space 3 is made accessible by arranging one or more openings 18 in the top lid wall part 14.

The tool 16 can be brought through the hole 18 near the part of the lid indicated by reference numeral 17, after which the lid of the holder can be lifted by leverage of the tool 16 in the direction indicated by B.

8601917 9 -8-

The one shown in Figs. 11 and 12 with resp. Holes 18 and 19 are for mounting not-drawn trunnion brackets.

In FIG. 13 schematically show some embodiments 5 of the lid, of which FIG. 13a substantially corresponds to FIG. 2. In Figs. 13a and b, the lower cover wall part 11 and the upper cover wall part 14 lie respectively in the conical surfaces indicated by I and II, which cone surfaces in FIG. 13a belong to the same conical surface and which are separated from each other by the mouth 20 of a groove 13, the inner groove wall 21 and the outer groove wall 22 of which merge into the lower lid wall part 11 and the upper lid wall part 14, respectively.

In FIG. 13b, the top lid wall part 14 lies in a conical surface II and the lower lid wall part 14 in a conical surface I, wherein the conical surface II has a radial jump inward relative to the conical surface I. Although in FIG. 3 b the conical surfaces are not parallel, this is possible with the same advantages of the jump.

Fig. 13c shows an embodiment in which the lower lid wall part 11 and the top lid wall part 14 and 20 are respectively located in the spherical surfaces III and IV of the same spherical surface with spherical street R. For the sake of clarity, all parts are no longer indicated here with reference numbers.

Fig. 13d shows an embodiment in which the lower lid wall part 11 and the upper lid wall part 14 and 25 respectively are located in a spherical plane III with spherical path R2 and spherical plane IV with spherical radius R ^, where Rj is smaller than R2 and the spherical streets have the same center (not shown) so that the spherical plane IV has a radially inwardly directed jump relative to the parallel spherical plane III. Such a jump can also be achieved by using equal spherical streets with different centers.

At least one of the channel walls can advantageously be used to counteract the displacement of containers in a stack of containers by leaving them upwards slightly above the plane of the container, whether or not closed, as an elevation. protrude and provide the bottom of a holder with a rib and / or cam pattern in which the elevation fits. Preferably, the elevation is applied to the channel wall which coincides with the container wall because the forces are then better diverted to the base of a stack.

-.01917

Claims (19)

1. Container with lid, of which at least the container is made of plastic and comprising a container bottom and an upright container wall, wherein the mouth of the container and the lid are provided with co-operating closing and locking means, characterized in that the closing and locking means of the lid are at least formed by a rotationally symmetrical lower lid wall part, seen in the closing position of the lid, and a rotationally symmetrical upper lid wall part, of which lid wall parts increase the surfaces of their horizontal cross-sections and which lid wall parts are all around one another separated by the mouth of an upwardly directed groove whose inner and outer groove walls merge into the lower and upper lid wall parts, respectively, and in which the closing and locking means of the container consist at least of an upwardly open gutter-shaped channel with an upright outer channel wall and ee n upright inner channel wall and a channel bottom), the outer channel wall of which is provided on its inner side with a snap rib, all this in such a manner that, with a lid fitted on the container, an upper part of the inner channel wall 20 is closely enclosed in the groove of the lid and the free circumferential edge of the top lid wall part with some tension under the snap rib. Container with lid, according to claim 1, characterized in that the outer channel wall forms part of the upright container wall. Container with lid, according to claim 1, characterized in that the inner channel wall forms part of the upright container wall. Container with lid, according to claim 1, characterized in that the upright container wall connects to the channel bends) at a location between the inner channel wall and the outer channel wall. Container with lid, according to any one of claims 1-4, characterized in that the snap rib is located near the free edge of the outer channel wall. 8601§17 * - -11- A carbon black lid holder according to any one of claims 1 to 5, characterized in that the bottom lid wall part and the top lid wall part lie in the same conical plane. 7. Container with lid according to any one of claims 1-5, characterized in that the lower lid wall part lies in a first conical surface and the upper lid wall part lies in a second conical surface, wherein a radial jump is present between the first and the second conical surface. 8. Container with lid according to claim 7, characterized in that the second conical surface has an inwardly directed jump relative to the first conical surface. Container with lid according to any one of claims 1-5, characterized in that the lower and the upper lid wall part lie in the same convex surface. A container with a lid according to any one of claims 1 to 5, characterized in that the lower lid wall part lies in a first spherical plane and the upper lid wall part lies in a second spherical plane with a radial projection between the first and the second spherical plane. Container with lid according to claim 10, characterized in that the second spherical surface has a radially inwardly directed jump relative to the first spherical surface. 12. Container with lid, according to any one of claims 1-11, characterized in that the outer channel wall is provided with one or more openings for inserting a tool for lifting the lid from the container. 13. Container with lid, according to any one of claims 1-12, characterized in that the top lid wall part between the groove and its free circumferential edge is provided with one or more openings for inserting a tool for lifting the lid of the holder. 14. Container with lid, according to any one of claims 1-13, characterized in that the outer channel wall is provided with two diametrically opposed holes for mounting a carrying bracket. 8601917 1 »V -12- Container with lid according to any one of claims 1-14, characterized in that the horizontal section of the container from the container bottom to the container mouth gradually increases for nesting of the containers. Container with lid according to any one of claims 1-15, characterized in that both are made of plastic. Container with lid according to claim 16, characterized in that the container is made of a different plastic than the lid. 18. Container with lid according to any one of claims 1-14, characterized in that the lid is made of metal. 19. Container with lid as described and / or claimed and / or explained on the basis of the drawings. 86 0 1 S1>