NL1044079B1 - Mould - Google Patents

Abstract

A mould apparatus (1000) is described for moutding a flange (F), the flange preferably having a skirt (S), to a free edge of an intermediate container (C). The mould apparatus comprises an inner mould device (100) to be positioned within the intermediate container and an upper mould device (200) to be positioned over the free edge of the intermediate container. The inner mould device has a generally annular shape and comprises a plurality of individual mould segments (110; 110A, 110B) that are displaceable with respect to each other in radial direction as well as in axial direction with respect to a central mould axis (1001). The mould segments (110; 110A, 110B) have an operational position in which they are in contact with the flange (F), and an extraction position in which their radial extent is smaller than an inner diameter of the flange (F). PUBLISH

Description

ref: P 2021 NL 007 TITLE: Mould The present invention relates in general to methods and moulds for manufacturing containers.

BACKGROUND OF THE INVENTION Injection moulding is a technigue where a hardenable material, typically a thermoplastic material, is introduced under high pressure and at high temperature into a mould space defined between two or more mould components. The material cools down and becomes hard, assuming the shape of said space. Then, the mould components are moved apart to release the formed product. Since this technigue as such is commonly known, it is not necessary to explain the technique in great detail here.

Containers with simple forms can be manufactured with a mould consisting of 1$ two main mould components, Figure 1A is a schematic longitudinal cross-section that schematically shows the general design of a mould 10 for injection-moulding a container C of general U-shape. The mould comprises a first main mould component or outer mould component 11 and a second main mould component or inner mould component 12, defining between them a mould space 13 (right-hand part of the drawing) for forming the container C {left-hand part of the drawing). The main mould components can be moved apart along a central mould axis 14, as indicated by arrows, to release the product C. In practice, the moulded product is likely to keep sticking to the inner mould component 12, and will be ejected from that inner mould component 12.

it is noted that the container C may have rotation symmetry around the central mould axis 14, but this is not necessary, In fact, the container may have any desirable contour, as long as its wall W becomes wider as seen along the axis 14 when going from the container bottom B to the container opening, thus allowing the main mould components 11, 12 to open without disturbing the product C.

it is noted that designs are known per se in which a more convex shape of the wall W can be moulded, but this is not relevant for the present invention.

In the case of figure 1A, the container C has a straight upper edge. Figure 1B is a schematic view comparable to figure 1A, for a case where the upper edge of the container is folded outwards to have a flange F, which in this example is directed radially, and it may even have a skirt S directed almost parallel! to the container wall W. Such container can also be made using a mould having two main mould components 11, 12. Figure 2A shows a longitudinal cross-section of a container C of which the upper edge of the wall W is provided with a radial flange F directed inwards, and figure 2B shows a longitudinal cross-section of a similar container C of which the inner edge of the inward flange F is provided with an inner skirt S directed to the bottom B, thus making an angle of close to 180° with the wall W. It should be clear that it is not possible to make such shape in an injection mould consisting of two mould components, because the inner mould component for shaping the inner surface of wall W necessarily has an outer diameter larger than the diameter of the container opening O as delimited by the inner edge of the inward flange F.

There is a desire to be able to manufacture containers C with inward flange F of the type illustrated in figure 2B. A particular application of such containers is as plant pot, Such plant pot has an advantage that, when filled with plant substrate PS as shown in figure 2B, the inner surface of the container's wall W is hidden from view, and the flange F with the skirt S gives the visual impression of a thick solid wall, particularly if the outer surface is provided with structure and colour to convey the look of concrete or wood. Currently, containers of this type are manufactured as kit of two components, i.e. one component being bottom B with wall W and the second component being flange F with skirt S, which two components are then attached to gach other by gluing or clicking. lt is an advantage that each of said components can “simply” be manufactured with a mould consisting of two main mould components. But this approach has a disadvantage of requiring two production lines plus stock for two different components, and of requiring an additional processing step. In the case of clicking, it will be very difficult to avoid a seam to remain visible, and the edge will be less robust, which is a problem since users tend to manipulate the containers {plant pots) in filled condition by trying to pull the edge. Gluing has disadvantages of being relatively expensive, labour-intensive, and involving environmental complications associated with the use of chemical substances.

As an alternative, avoiding the above disadvantages, it is known to manufacture such container by rotational moulding. A disadvantage of such method is the long process time per product.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and device which allows a container with an inwardly folded edge to be injection moulded as a single integral whole.

The solution proposed by the present invention is based on the concept that the container is manufactured in two steps.

In a first manufacturing step, an intermediate container product is made, for instance moulded in accordance with figure 1A, i.e. comprising the bottom B and the wall W but without any flange.

This manufacturing step can be performed with a two-part mould.

In a second manufacturing step, the flange and skirt portions are moulded to the intermediate container product to thus produce the end product.

In this second moulding step, since the bottom portion B and the lower part of wall portion W have already been completed and need no support from any mould part, the interior of the container is substantially empty and is available for accommodating moving mould parts involved in moulding the flange and skirt portions.

These and other aspects, features and advantages of the present invention will be further explained by the following description of one or more preferred embodiments with reference to the drawings, in which same reference numerals indicate same or similar parts, and in which: Figure 1A is a schematic longitudinal cross-section of a mould for injection-moulding a container C of general U-shape; Figure 1B is a schematic view comparable to figure 1A, for a case where the upper edge of the container has an outward flange with a skirt; Figure 2A shows a longitudinal cross-section of a container with a radial flange directed inwards; Figure 2B is a schematic view comparable to figure 2A of a container with an inward flange and a skirt; Figure 3A is a schematic partial cross-section of a mould apparatus comprising an inner mould device and an upper mould device; Figure 3B is a schematic partial cross-section comparable to figure 3A, showing the mould devices in their operative positions; Figure 3C illustrates the flange and skirt portions formed in the mould apparatus; Figure 4 is a schematic 3D view of the mould apparatus, partially cut away; Figure 5 is a schematic cross-section of a container with the inner mould device within its interior; Figure 6 is a schematic top view of the inner mould device, seen according to arrow Viin figure 5; Figures 7A-7D and 8A-8C illustrate the division of the inner mould device into mould segments, and their displacement.

DETAILED DESCRIPTION OF THE INVENTION == Figures 3A-3C schematically illustrate the principles of the moulding method according to the present invention.

The figures show, in cross-section, an edge portion of an intermediate container C, possibly moulded in a first step in accordance with the prior art principles of figure 1A or in any other manner, In the orientation of the drawing, the bottom B of the intermediate container C would be up.

Since the first moulding step can be done in accordance with prior art technology, this first step is not discussed in more detail here.

For the second moulding step, a mould apparatus 1000 comprises a first mould device 100 and a second mould device 200. it is to be noted that the container wall W in reality extends over 360° around a central body axis, and that consequently the first mould device 100 and the second mould device 200 have an annular shape extending over 360° around a central mould apparatus axis 1001, as illustrated in figure 3B and in the schematic perspective view of figure 4, in which the container C is omitted. lt is noted that the container may have a circular cross-section, and in such case the mould devices may also have circular symmetry, but that is not essential, In operation, the first mould device 100 is positioned within the intermediate container C and is therefore also indicated as inner mould device.

In operation, the second mould device 200 is positioned over the free edge of the wall W of the container C, extending partly within the contour of the container C and partly outside the contour of the container C, and therefore the second mould device 200 is also indicated as upper mould device.

In operative position, fig.3B, these two mould devices define between them a moulding space 300 that can be filled with moulding material to form a moulded product MP comprising flange F and skirt S {fig.3C) onto the free edge of the intermediate container wall W.

It can be seen that the precise shape of the free edge of the intermediate container wall W is not relevant, as it is completely contained within said moulding space 300. In the moulding step, the hot moulding material also causes the container material to melt, so that these materials merge together and a strong unbreakable joint is formed between the moulded product MP and the container C.

The inner mould device 100 is shaped to have a first inner mould surface 101, that in use is to substantially contact the radially inner surface of the container wall W.

Since this first inner mould surface 101 is positioned radially outwards of the inner mould device 100, it will also be indicated as outer mould surface 101. The inner mould device 100 further has a second surface 102 meeting the outer surface 101 and defining a first flange wall portion of the moulding space 300, for defining a first surface of the flange F.

Since this first flange surface is directed

& towards the bottom of the intermediate container C, this first flange surface will also be indicated as lower flange surface FL of the flange F. In a corresponding manner, the second surface 102 of the inner mould device 100 will also be indicated as lower flange mould surface 102.

The inner mould device 100 further has a third surface 103, meeting the lower flange mould surface 102 and defining a first skirt wall portion of the moulding space 300, for defining a first surface of the skirt S. Since this first skirt surface is directed radially outwards, this first skirt surface will also be indicated as outer skirt surface So of the skirt S. In a corresponding manner, the third surface 103 of the inner mould device 100 will also be indicated as outer skirt mould surface 103.

The upper mould device 200 is shaped to have first upper mould surface 201 that in use is to substantially contact the radially outer surface of the container wall W. Since this first upper mould surface 201 is radially the outermost mould surface of the upper mould device 200, it will also be indicated as outer mould surface 201.

The upper mould device 200 further has a second surface 202 meeting the outer surface 201 and defining a second flange wall portion of the moulding space 300, for defining a second surface of the flange F opposite the lower flange surface FL, also indicated as upper flange surface Fu. In a corresponding manner, the second surface 202 of the upper mould device 200 will also be indicated as upper flange mould surface 202.

The upper mould device 200 further has a third surface 203, meeting the upper flange mould surface 202 and defining a second skirt wall portion of the moulding space 300, for defining a second surface of the skirt S opposite the outer skirt surface So, also indicated as inner skirt surface Si. In a corresponding manner, the third surface 203 of the upper mould device 200 will also be indicated as inner skirt mould surface 203.

The inner mould device 100 and the upper mould device 200 have respective contact faces 104, 204 that in the operative condition (fig.3B) contact each other and cooperate to close and seal the moulding space 300 while defining the free edge part of the skirt S, The precise shape and orientation of these contact faces 104, 204 are not essential; in the embodiment shown, these contact faces 104, 204 are directed substantially perpendicular to the container wall W.

Opposite the second and fourth mould surfaces 102, 104, the inner mould device 100 has a fifth mould surface 105. Since this fifth mould surface 105 is directed towards the bottom of the intermediate container C, this fifth mould surface 105 will also be indicated as lower mould surface 105.

Apart from the wall portions mentioned, the remaining wall portions of the mould devices have no immediate function in the moulding process, and their shape may be any.

Persons skilled in this art will recognize that the upper mould device 200 may advantageously be shaped as an annular piece having a gutter-type cross-section, as can be seen in figure 4. After moulding, when the flange F and skirt S have cooled and hardened sufficiently, the upper mould device 200 and the container C with moulded product MP may simply be separated from each other by relative displacement in axial direction, as indicated by the down-arrow in figure 4.

Figure 5 is a schematic cross-section of the container C after completion of the second moulding step, when the flange F and skirt S have cooled and hardened sufficiently. In figure 5, the upper mould device 200 is omitted for the sake of convenient discussion. The inner mould device 100 is located within the interior Cin of the container C. The flange F and skirt S define an entrance passage P for said interior Cin. The passage P has a diameter that necessarily, In fact by definition, is smaller than the outer diameter of the inner mould device 100. Figure 5 serves to illustrate that the inner mould device 100 and the container C with moulded product MP can not be simply separated from each other by relative displacement in axial direction, because the inner mould device 100 is wider than the passage P. It is noted that, in this context, the wording “diameter” is not used to imply a circular shape of said passage P.

in order to allow the inner mould device 100 to be removed from the interior Cin of the container C, through the smaller entrance passage P, the present invention provides that the inner mould device 100 consists of a plurality of individual mould segments 110 that are displaceable with respect to each other in radial direction as well as in axial direction.

Figure 6 is a schematic top view of the inner mould device 100, seen along the axis 1001, as indicated by arrow Vl in figure 5. it can be seen that the inner mould device 100 overall has an annular shape, consisting of segments 110 arranged adjacent to each other in tangential direction. In the illustration, the annular shape is circular, but that is not essential as it depends on the contour of the container C.

The mould segments 110 are carried by, and displaced by, a segment carrying and displacement arrangement which will be discussed later, but of which the precise structure is not essential. It is noted that mould structures in which movable mould segments are mounted with respect to a segment carrying and displacement arrangement are known per se, Reference is made again to figure 3B. It should be clear that, when the moulding material is injected into the moulding space 300, a large moulding pressure is generated in the moulding space 300, causing a large force acting substantially axially (upwards in the figure) on the mould segments 110. it may in practice be difficult for the carrying and displacement arrangement to counteract such force. Therefore, it may be preferred that the mould apparatus 1000 comprises a back support 400 for the mould segments 110, as is illustrated in the righthand portion of figure 5, This back support 400, which is shown as being carried and actuated by a central actuator arm 401, has an outer radius that is smaller than said passage P, as shown, and rests, in operation, against a radially inner portion of the lower mould surface 105 of the mould segments 110.

For releasing the mould segments 110 from said interior Cin, the mould segments 110 have to be displaced radially inwards for being able to pass the passage P. However, the mould segments 110 can not be displaced radially inwards directly in view of the skirt S blocking such displacement. Therefore, the mould segments 110 have to be displaced axially towards the container bottom B over a distance at least equal to and preferably larger than the axial size of the skirt S, such as to be able to pass the skirt S in radial direction.

if the edge portion of the container C extends exactly axially, or widens towards the bottom, the axial displacement of the mould segments 110 can, in principle, be executed for all mould segments 110 simultaneously, without any radial displacement of the mould segments 110. After sufficient axial displacement, the mould segments 110 can then be displaced radially, over a distance at least equal to and preferably larger than the radial size of the flange F. so that the mould segments 110, i.e. the inner mould device 100, fits within the passage P and is consequently able to pass the passage P.

For being able to displace the mould segments 110 in a direction having an axial displacement component, the back support 400 will be displaced axially first, or simultaneously with the mould segments 110, towards the container bottom B, to release the mould segments 110.

As far as the radial displacement is concerned, for instance if all mould segments 110 have been lifted axially to above the skirt S, it is not possible to move all mould segments 110 inward at the same time. At smaller radius, there is not enough room for all segments, Further, the presence of the back support 400 with its central actuator arm 401 may hinder the displacement freedom of the segments. An important aspect of the present invention is that the various segments 110 are moved in two or more groups, and preferably these groups are displaced to different axial levels. The precise population of these groups is not essential, except that in each group, the various segments 110 are not neighbouring segments. In other words, seen in tangential direction, between two successive segments in one group there is always at least one segment of at least one other group. In each group, the segments may have mutually identical shape and size.

In an example, there are two groups A and B, and the various segments 110 in the respective groups will be indicated with reference numerals 110A and 110B, respectively.

Figure 7A is a view comparable to figure 6 on a larger scale, showing a portion of the inner mould device 100 in a possible embodiment in accordance with the present invention. The figure illustrates that, in circumferential direction, the mould segments 110 in this embodiment are alternatively of a first type 110A and of IS a second type 110B. The first type mould segments 110A have side walls 111, 112 which, in the cross-section perpendicular to the central axis 1001, extend parallel to each other, while the second type mould segments 110B have side walls 113, 114 located in virtual planes which, in the same cross-section, intersect each other at an angle o in a virtual point of intersection U inside the ring of segments. In such embodiment, in a first displacement step, the first type mould segments 110A can be displaced radially inward while the second type mould segments 110B remain in place, as shown in figure 7B. It will be understood that, while the first type mould segments 110A travel radially inwards, they will come closer together tangentially, and they can travel only up to the point where they touch each other.

Instead of being parallel in the cross-section perpendicular to the central axis 1001, the side walls 111, 112 of the first type mould segments 110A may also be located in virtual planes which intersect each other at an angle B with each other, having a virtual point of intersection T outside the annular mould 110. This is equivalent to increasing angle a. In such case, when the first type mould segments 110A are displaced radially inward, the segment walls 111, 113 and 112, 114 will immediately move away from each other, as shown in exaggerated manner in figure 7C.

Once the first type mould segments 110A are free from the second type mould segments 110B, the second type mould segments 110B can be displaced inwards, it will be understood that, while the second type mould segments 110B travel radially inwards, they will come closer together tangentially, which is allowed by the absence of the first type mould segments 110A in between. Also, the second type mould segments 110B approach the first type mould segments 110A. Depending on circumstances, for instance the size of the container and the relative sizes of the various mould segments, the second type mould segments 110B can travel radially inwards up to the point where they touch each other or where they touch the first type mould segments 110A. Also depending on circumstances, the first type mould segments 110A can travel over a distance sufficiently large to allow sufficient space for the second type mould segments 110B to travel radially and reach a position completely within the contour of the skirt S and be able to pass through passage P.

ft is noted that in the above it is stated "if all mould segments 110 have been lifted axially to above the skirt S". However, for allowing the first type mould segments 110A to be displaced radially, it is sufficient if only the first type mould segments 110A have been lifted axially; the second type mould segments 110B can be displaced axially and radially later.

In another implementation of the present invention, it is possible to ensure more space for the different mould segments 110A, 110B by lifting them to different axial positions. Several variations are possible. Without skirt, or when lifted above the skirt, it is possible that the first type mould segments 110A are displaced radially while maintaining their axial position, and that subsequently the second type mould segments 1108 are displaced axially to a different level and are then displaced radially inward.

Alternatively, it is also possible that the first type mould segments 110A are displaced axially to a different level and are then displaced radially inward, and that subsequently the second type mould segments 110B are displaced radially {and also axially in the case of a skirt being present).

In either case, once the first and second mould segments 110A, 110B have been displaced lo different axial positions above the skirt 8, or to different axial positions in absence of a skirt, the radial displacement of the first and second type mould segments can be done simultaneously.

in the above, the axial and radial displacements have been described as independent and consecutive displacements. While this is possible indeed, it would require separate actuators for axial and radial displacement. In more convenient embodiments of the invention, the mould segments are displaced in a direction that has a radial component as well as an axial component, thus making a first angle between 0° and 80° with the central axis 1001. A preferred first angle is in the range of 5% to 25°. In such case, the skirt S will make a second angle with the central axis 1001 that is equal to or larger than the first angle.

Figure 7D is a schematic 3D view of an example, in which an example of a segment carrying and displacement arrangement is indicated with reference numeral

120. The segment carrying and displacement arrangement 120 includes for each mould segments 110A, 110B a respective actuating rod 121A, 121B. The actuating rods 121A, 121B have respective longitudinal axes of which the extent has a radial component as well as an axial component, and possibly a tangential component. The actuating rods 121A, 1218 extend through the passage P, and engage the respective mould segments 110A, 1108 at their respective contact faces 104.

The actuating rods 121A, 1218 are displaceable in their longitudinal direction to push or pull the respective mould segments 110A, 110B, causing travel of the respective mould segments 110A, 110B in axial and radial direction simultaneously, and possibly in tangential direction as well. The actuating rods 121A for the first type mould segments 110A will be actuated first, lifting the first type mould segments 110A. Slightly later, when the first type mould segments 110A have been lifted axially sufficiently, the actuating rods 121B for the second type mould segments 110B are actuated, lifting the second type mould segments 110B. As from that moment, the first type mould segments 110A and the second type mould segments 110B can travel simultaneously, both in radial and in axial direction. It will be clear that the first type mould segments 110A will travel to a higher axial position than the second type mould segments 110B. The figure illustrates that the mould segments 110A, 110B travel to an extraction position where their radial outermost body parts are at a radial position inside the contour of the passage P, in other words their radial extent is smaller than the inner diameter of the flange F.

In a possible embodiment, the extraction positions of all mould segments 110A, 110B have the same (or similar) radial coordinate. In such case, the respective actuating rods 121A have an orientation slightly differing from the orientation of the actuating rods 1218.

Figures 8A and 8B are schematic radial views of the inner mould device 100, seen perpendicular to the axis 1001, as indicated by arrow VII in figure 5. In this projaction, the walls of the mould segments 110 may be parallel to each other, as shown in figure 8A. Then, the mould segments can move axially with respect to each other. In the embodiment illustrated in exaggerated manner in figure 8B, the walls of the mould segments 110 make alternating angles with respect to each other, so that the neighbouring segments can be separated more easily from each other in vertical direction, as illustrated in figure 8C.

When all mould segments 110A, 110B are at their respective extraction positions, they can be extracted from within the container C, passing as a whole through the passage P. In a practical implementation, the mould segments 110 are actuated to travel to their respective extraction positions while the upper mould 200 is still in place, holding the container C. With the mould segments 110 in their respective extraction positions, the container C can be lifted axially from the upper mould 200, In a practical implementation, a portion of the upper mould 200 is implemented as an axial pusher. For illustrating an example, figure 3A shows a dotted separation line 210, which divides the upper mould 200 in a radial inner part and a radially outer part that includes the upper flange mould surface 202. The radially outer part could be an axially movable expeller part for expelling the container C. Summarizing, the present invention proposes a mould system in which an annular mould having an operational outer diameter can be collapsed to a situation of smaller outer diameter in order to pass an opening of the formed product. This is achieved by moving the mould segments to different axial positions and to smaller radial positions. The invention is explained above for two different axial positions, but in principle if as also possible to have three or more axial positions.

It should be clear to a person skilled in the art that the present invention is not limited to the exemplary embodiments discussed above, but that several variations and modifications are possible within the protective scope of the invention as defined in the appending claims. For instance, the present invention also applies to moulds for containers without skirts. Although in such case it is not necessary to lift the mould segments over a skirt, the mould segments are still displaced to different axial positions such as to obtain space for them at smaller radius. Further, although it is possible for one group of segments to remain on the same axial position as the operational position, it is preferred to use a segment carrying and displacement device 120 having actuation rods 121 that extend through the container's passage P. Even if certain features are recited in different dependent claims, the present invention also relates to an embodiment comprising these features in common. Even if certain features have been described in combination with each other, the present invention also relates to an embodiment in which one or more of these features are omitted, Features which have not been explicitly described as being essential may also be omitted. Any reference signs in a claim should not be construed as limiting the scope of that claim.

Claims (8)

CONCLUSIONS 1. Molding device (1000) for pouring a flange (F), which flange may have a skirt (8), on a free edge of an intermediate container {C), which molding device has an inner molding device {100} to be positioned within the intermediate container, and comprises an upper mold device (200) to be positioned over the free edge of the intermediate container; wherein the inner mold assembly has a generally annular shape and comprises a plurality of individual mold segments (110; 110A, 110B) movable relative to each other in a radial direction as well as in an axial direction relative to a central mold axis (1001); wherein the mold segments (110; 110A, 110B) have an operative position in which they are in contact with the flange (F), and an extraction position in which their radial extension is less than an inner diameter of the flange (F); wherein the mold segments (110; 110A, 110B) comprise a first group of first mold segments (110A) and a second group of second mold segments (110B)}, wherein in the tangential direction between successive first mold segments (110A) there is steads at least one second mold segment (110B) and there is always at least one first mold segment (110A) between successive second mold segments (110B); and wherein the extraction position of the first mold segments (110A) is an axial distance from the extraction position of the second mold segments (110B). The molding apparatus of claim 1, wherein each first mold segment {110A) has tangential side faces that intersect with a virtual plane perpendicular to said central mold axis (1001) along cutting lines, said cutting lines being mutually parallel (Fig. 7B) or intersecting outside the inner mold device (100) (fig. 70). The molding apparatus of claim 1 or 2, wherein each first mold segment (110A) has tangential side faces which, in radial projection, are mutually parallel (Fig. 8A) or intersect below the first mold assembly {100) (Fig. 8B-C) . The molding apparatus of any one of claims 1 to 3, further comprising a segment carrying and moving arrangement (120) for moving the mold segments (110A, 110B) from their operative position to an extraction position. The molding apparatus of claim 4, wherein the segment carrying and moving arrangement (120) comprises a plurality of control rods (121A, 121B) movable in their longitudinal direction to push or pull the respective mold segments (110A, 1108). ; wherein the rods (121) are disposed at an angle greater than 0° and less than 80° with respect to said axis (1001), to cause the respective mold segments (110A, 110B) to travel in axial and radial directions simultaneously. The jig apparatus according to claim 5, wherein the actuation bars (121A) for the first jig segments (110A) are adapted to be energized before the actuation bars {121B)} for the second jig segments (110B), for moving the respective jig segments from their working position to their extraction position. A method of operating the mold apparatus according to any one of claims 1 to 8, wherein the inner mold device (100) is positioned within the intermediate container, and the first mold segments (110A) and second mold segments {110B) are moved to their working position; in which a flange (F) and optional skirt (8) are subsequently cast on the intermediate container; wherein, after fermentation of the Tiens (F) and optional skirt (8), the first mold segments (110A) are moved from their working position to their extraction position at a first axial position, then the second mold segments (1108) are moved from their working position to their extraction position at a second axial position, and finally the first mold segments (110A} and second mold segments (110B) are axially separated from the container (C). 8. Method for manufacturing a container, wherein an intermediate container product is provided in a first step, wherein the intermediate container product comprises a bottom (B) and a wall {W) with a free edge; and wherein in a second step a flange (F) and optional skirt (8) are cast on the free edge of the wall (W} using the molding apparatus according to any one of claims 1-6 or the method according to claim 7.