DE102008011565A1 - Molded body i.e. cartridge, has form closure elements for protection of covering element against shifting opposite to molded body in direction during molding process, where covering element is made of plastic and/or paper and/or metal - Google Patents

Abstract

The body (1) has a molded covering element (15) above a part of a wall (10). Form closure elements (16, 17) are provided for protection of the covering element against shifting opposite to the molded body in a direction during a molding process. The form closure elements are formed by a projection and/or a recess in a surface of the molded body and the covering element, where the surface is turned to the covering element. The covering element has a thickness of up to 250 micrometers and is made of a plastic and/or paper and/or metal. Independent claims are also included for the following: (1) a device for manufacturing a molded body (2) a method for manufacturing a molded body.

Description

The Invention relates to a shaped body, in particular in container form, with at least one wall, wherein the shaped body via at least part of its wall with at least one molded Cover element is provided, a device for producing the shaped body with at least one molded into a wall of the molding Cover element, with a hollow shape and at least one in the mold insertable mold core, wherein between the mold and mold core provided with a material melt fillable cavity is, as well as a method for producing the shaped body with at least one molded into a wall of the molding Cover element in a mold, in which at least one mandrel below Leave a cavity between the mold and mold core can be inserted.

Such moldings, devices and methods for their preparation are known. For example, the DE 103 33 158 A1 a method and an apparatus for molding a container with integrated into the container wall cover element by injection molding. Here, the injection mold is fed to the cover element on an auxiliary mandrel. The injection mold is designed as a hollow mold. It is pushed over the auxiliary mandrel and transferred to the cover element electrostatically or by vacuum to the mold. Alternatively, the cover element can be applied by an applicator on the mandrel and inserted on this in the mold.

at This method will cover elements in the wall of the container integrated. When in-mold labeling (IML) is in an injection mold initially a cover element introduced, which is located on the lateral surface applies before the mold is closed and the plastic melt injected becomes. The flowable plastic is dominated by the Process heat firmly connected to the cover element. The cover element becomes an integral part of the injection-molded container or generally shaped body. Especially in the production of thin-walled containers, such as Margarine mugs, this procedure is used.

At the Inject plastic melt between the mold and the mold core may cause the problem that the cover element due to the high mold filling speed, with which the plastic melt is injected, is misplaced and thus no longer in the desired position the wall of the container produced is located. Furthermore, can the cover element due to the high mold filling speed when injecting the plastic melt, fold in or form waves, which also leads to a qualitatively inferior surface can lead the finished container.

Of the The present invention is therefore based on the object, a device and a method for producing a shaped body, in particular in Container shape to provide, in their application is not more about an unwanted misplacement of the cover element within the mold comes during the injection molding process and thus a shaped body can be produced in which the at least one Cover element neither folds nor waves raises and essentially on a predetermined or predetermined location of the shaped body is positioned.

The Task is for a molding according to the preamble of claim 1 solved by at least one positive locking element for securing the cover element against displacement the molding in at least one direction during the Einformvorgangs is provided. For a device According to the preamble of claim 13, the object is achieved by that the hollow mold and / or the mandrel at least one projecting and / or recessed element for preventing a displacement of the Deckelements in at least one direction opposite to the Having or have molded body. For a procedure According to the preamble of claim 25, the object is achieved by that during the injection of molten material in the Cavity the cover element on at least one projecting and / or a recessed element held on the mold and / or the mandrel becomes. Further developments of the invention are in the dependent Claims defined.

Thereby, a molded article is provided, which is provided with at least one cover element, which is positioned at a predetermined position of the surface of the molding. Further, an apparatus for producing a shaped body is provided, by means of which, during the molding process of the shaped body, securing of the cover element to the shaped shaped body is possible against displacement relative thereto. A relative movement between the cover element and the mold or mold core can be avoided. By flowing into the cavity between the mold cavity and mold core with high mold filling material melt, in particular plastic melt, the cover element is pressed against the at least one projecting and / or recessed element, whereby the surface of forming in the cavity molding a corresponding negative form of the above and / or or recessed element occupies and holds there with this also inserted into the protruding and / or recessed element part of the cover member there. An unwanted movement of the cover element together with the inflowing molten material can be safely prevented, since the ceiling Lement is positively pressed against the at least one projecting and / or recessed element of the mold and / or the mold core of the device for producing the molded body by the inflowing molten material and held. Thus, at least one positive-locking element is formed in the cover element and / or a wall of the shaped body formed on the hollow mold and / or the mold core.

The Cover element is advantageously at least partially on the at least a protruding and / or recessed element and / or the at least one Positive locking element formable formed cover element, so that the cover element in the production of the molding on the protruding and / or recessed element or on the positive-locking element can create positive locking. The formability is determined primarily by the choice of material of the cover element and its thickness determined. Basically it is already sufficient if the cover element is only formable in the area is formed, in which it is at the at least one projecting and / or recessed element form-fitting. Of course it is also possible that Make the cover element fully conformable, so that its positioning relative to the above and / or recessed element or the positive-locking element not matched to a formable area of the cover element needs to be.

The Cover element can be constructed in one or more layers. Especially single or multilayer films can be used, which consist of plastic and / or paper and / or metal. The foils used for the production of the cover element can also uniaxial or multiaxial stretched, low in tension be cast or rolled. Multilayer composite films can For example, composite layers of polypropylene (PP) with polyethylene terephthalate (PET) and aluminum or polyethylene (PE), ethylene-vinyl alcohol copolymer (EVOH) and polyethylene terephthalate (PET) exist. Also cover elements made of paper with integrated bonding agent can be used. The choice of material / materials, execution the film (s) and the thickness of which is advantageous to achieve Effects or properties made dependent, z. B. one desired barrier effect against migrating substances, a desired scratch resistance of a printed film, etc. It is therefore possible to use films of different strength, Processability, printability, etc. individually or in combination be used together. The thickness of the cover element can be application-specific be selected and for example up to 250 microns In particular, cover elements can have a thickness from 40 to 250 microns or under 40 microns provided become. Cover elements with a thickness of more than 250 microns can then used, if at least partially to the at least a protruding and / or recessed element or on the molding formed positive locking element formed formable are.

The At least one interlocking element can by a projection and / or a recess in a surface facing the cover element be formed of the molding and the cover element. The at least one interlocking element may further by a projection and / or a recess in the cover element for engaging in a Wall of a device for producing the shaped body be formed. It can therefore in the wall of the molding and be formed in the cover element mating form-fitting elements. Furthermore, only in the cover element positive locking elements formed by the retention in the mold and / or on the mold core be.

Advantageous is that at least one positive locking element by a rib and / or Groove formed. Alternatively or additionally, it can by a punctiform depression and / or a punctiform projection formed be. The interlocking elements can thus not only by Ribs and grooves, but also in addition by punctual Depressions or punctiform protruding elements be formed if this proves to be application-specific useful. At a Positive locking element in the form of a depression in the surface the mold and / or the mold core may be part of the molten material be pressed into this depression, so that on the surface the shaped body formed one of the negative mold of the recess corresponding protruding element is formed, in particular in the form of a bridge or a punctiform increase the surface of the formed molding.

Advantageous can be considered as a protruding element at least partially around the Form body circumferential annular element provided be. The molded body can predominantly rotationally symmetrical be formed and the at least one positive locking element over at least a part of the circumference of the molding around the latter Extend rotational axis circumferentially. When pressing in the molten material in the cavity between the mold and mold core forms the forming Shaped body according to an at least partially encircling annular groove or rib, over which the cover element at the selected position within the mold and thus held on the molded or molded body can be.

In order to allow a particularly good grip of the cover element, as already mentioned, a combination of projecting and recessed elements are provided, such as a plurality of grooves and ribs, punctiform depressions and punctiform projections.

When It also proves to be advantageous, the at least one positive locking element for securing the cover element on the outside and / or inside of the To provide shaped body. A trained as a container Shaped body can be used both on the inside and on the Be provided outside with a respective cover element. Therefore, securing the cover element on both the outside and as well as the inside of the molding as advantageous because in each case a shifting of the cover element during the injection of the molten material to a loss of quality can lead the finished molding.

Advantageous this is at least one positive-locking element proximal to the injection point a molten material during the production of the molding intended. As in the cavity between mold and mold core inflowing molten material always the first proximal to the injection site in the cavity located part of the Entrain it, it proves to be advantageous just to secure this part of the cover element. That at least one Positive locking element can therefore advantageously end to the molding and / or the cover element, since in this area usually provided the injection point of the molten material in the cavity is. The provision of a secure hold for the cover element is therefore particularly useful at this point. Will the cover element only on a part of the longitudinal extension of the molding applied, proves the provision of at least one protruding and / or recessed element in the region of the mold and / or the Form core as particularly advantageous in which the cover member proximally to the injection point for the molten material or in the area a feed of the molten material into the cavity between Hollow mold and mold core is arranged. This is at least advantageous a form-fitting element with axial distance to the injection point, ie in the material flow direction behind the injection point of the molding arranged at this. Regarding the device for manufacturing the molding is according to the projecting or recessed Element on the mold and / or the mold core advantageous in the material flow direction behind the injection point into the cavity for the produced Shaped body provided.

If the molded body is a cartouche, it turns out then as particularly advantageous, the at least one positive locking element with distance to a shoulder of the molding in relation to arrange on the longitudinal direction, when the cover element axially spaced therefrom. Accordingly, that is protruding and / or recessed element in the device for manufacturing of such a shaped body in the form of a cartridge in relation to the material flow direction behind a molding in the mold for forming the shoulder of the shaped body to be produced be provided on the mold and / or the mandrel.

By the axial distance in the longitudinal direction of the shaped body to the injection point of this or in the material flow direction behind the injection point of the molten material in the mold in the Cavity between the mold and mold core, the cover element straight where it is most at risk of unintentional misplacement is suspended. In the area of the shaping of the shoulder a cartridge takes place a deflection of the molten material the radial in the axial direction with respect to the cartridge or the cavity, so that the risk of entrainment the cover element, which is arranged in this area with its one end, without the provision of the protruding and / or recessed element or form-fitting element by the flowing molten material is particularly high. Therefore, arranging the at least proves a protruding or recessed element just in this deflection area from the radial to the axial movement of the molten material as especially advantageous.

is So one end of the cover element in an area where the direction The material flow is deflected, as in the area of such Shoulder, arranged, exists here due to the mold filling speed the risk of entrainment of the cover element. Therefore proves arranging a positive locking element for holding the cover element there as beneficial. The protruding or recessed element is preferably in a cylindrical portion of the cavity and / or the mandrel or the at least one positive locking element on the finished molding on a cylindrical portion provided by this.

Of the axial distance to the deflection point of the material flow direction and the size of the positive-locking elements can be selected application-specific.

Of the Shaped body can thus be designed so that the cover element with the molding by providing at least a protruding from the plane of the wall of the shaped body positive locking element connected is. Furthermore, the cover element with the molding by providing at least one recess as a positive locking element be connected in the wall.

For a more detailed explanation of the invention embodiments of this will be described in more detail with reference to the drawings. These show in:

1 a perspective view of a first embodiment of a shaped body according to the invention,

2 a perspective detailed view of the molding according to 1 .

3 a detail sectional view through an end-side portion of the molding according to 2 .

4 a detailed sectional view through an end portion of an alternative embodiment of a shaped body according to the invention,

5 a detailed sectional view through an end-side section of a further alternative embodiment of a shaped body according to the invention,

6 a perspective view of the in 5 shown details of a shaped body according to the invention,

7 a partial sectional view of an apparatus according to the invention for producing a shaped body according to one of 1 to 6 .

8th a side sectional view of the closed device according to 7 with indicated supply of molten material, and

9 a detail sectional view through an end portion of yet another alternative embodiment of a shaped body according to the invention.

1 shows a perspective view of an injection-molded body 1 , The molded body 1 has the shape of a cartridge with a cylindrical peripheral wall 10 and an end-side end wall 11 , The opposite end 12 the molded body is open, what 1 is not apparent, however 7 , Central from the end wall 11 a spout protrudes 13 which has an outside thread 14 and a Anspritzstelle 130 ,

In the production of the molding of the nozzle or this end of the molding with the injection point 130 shaped first, since there the material melt enters the mold. Such a mold 2 for manufacturing the molding is in the 7 and 8th shown in FIG 8th the entry of molten material is indicated, as will be explained in more detail below.

The molded body 1 according to 1 is outside and possibly also inside with a cover element 15 provided in the manufacture of the molding in the mold 2 and / or on a mold core 3 is added to be embedded there after the introduction of the melt into the mold on the outside and / or inside of the finished molded body there and to form the outside of the shaped body. The cover element 15 is in 1 merely hinted. The embedding of the cover element 15 in the surface of the molding can as in the DE 103 33 158 A1 disclosed done.

The molding according to 1 points near its end wall 11 Outer ribs and grooves on what better the perspective detail view in 2 and the sectional view in 3 can be removed. The ribs and grooves are formed in the surface of the molded article by protruding or recessed elements provided respectively inside the mold and / or the mandrel during the injection molding process 1 and the cover element 15 formed. Between cover element 15 and the outer surface of the peripheral wall is formed in the region of the ribs 16 and grooves 17 Thus, a positive connection, which prevents the cover element from wandering within the mold during the injection molding process and thus be misplaced. Rather, the cover element by the provision of these positive locking elements in the form of the ribs 16 and grooves 17 and the opposite formation of ribs and grooves are held.

Ribs 16 and grooves 17 in the peripheral wall 10 of the molding are how 3 can be seen, even in the cover element 15 educated. Accordingly, for forming the ribs 16 and grooves 17 in the in the 7 and 8th shown hollow shape of a device 4 for producing the shaped body on its inner surface 21 protruding elements 22 educated. Before filling the molten material into the mold 2 becomes the cover element 15 inserted in this. This then stores, inter alia, on the above elements 22 on the inner surface 21 the wall 20 the mold 2 , Through a channel 23 in the headboard 24 the mold 2 the material melt, in particular plastic melt, with a high mold filling speed in the cavity 25 between the wall 20 or its inner surface 21 and the mandrel 3 inside the mold 2 injected. The mold filling rate at which the molten material is injected results in the cover element 15 against the above elements 22 is pressed and thereby secured against this against accidental displacement and entrainment with the molten material. In addition, the molten material flows around the protruding elements 22 and thus forms a counter-shape to these, so that the cover element 15 still additionally from his back, on which the molten material rests, held and thus secured against moving.

Lies except on the inside surface 21 the wall 20 the mold 2 also on the outside surface 31 the wall 30 of the mold core 3 a corresponding second cover element 15 on, which is the inner surface of the molding to be formed 1 can also cover the mold core 3 corresponding holding elements, for example in the form of protruding elements 32 have, as also in 7 indicated. By the incoming melt is also the second cover element, which is the mold core 3 surrounds, against its outer surface 31 and accordingly against the above elements 32 Pressed, with the above elements 32 flowing around melted material forms a counter-shape to these and thus additionally holds the cover element by positive locking.

Like that 7 and 8th can be removed, the cover element 15 through the above elements 22 respectively. 32 with axial distance to the injection point 28 the molten material in the cavity 25 on the mold 2 or the mold core 3 held. The above elements 22 . 32 are at an axial distance - with respect to the longitudinal direction of the mold - to one, so in the material flow direction behind a molding 27 in the cavity 25 in which a shoulder 19 of the molding 1 is formed in the form of a cartridge. The shape 27 for forming the shoulder 19 is in the headboard 24 provided, like the 7 and 8th can be seen. How particularly well the finished molding, as he in the 3 . 4 . 5 and 9 is shown in detail section, can be seen, is the area of the arrangement of the ribs 16 and grooves 17 or the above elements 22 . 32 in the region of the deflection of the molten material during the injection process from the radial movement in an axial, relative to the hollow mold or the cavity 25 , at the beginning of a cylindrical section 26 of the cavity 25 , In this area, there is the danger of unwanted entrainment of the cover element by the high forces acting 15 with the flowing molten material flowing through the protruding elements in the mold or on the mold core 3 and correspondingly by the resulting ribs 16 and grooves 17 is held. In particular, a rib 16 and / or a groove 17 directly axially adjacent to a constriction 190 provided the shoulder 19 from the cylindrical section 26 separates.

Basically, it is in providing a thick or stiff cover member 15 also possible that the cover element only by the inflowing molten material on the protruding elements 22 the mold or 32 of the mold core 3 is pressed, but in this case the protruding elements deform only a part of the cover element, as in 4 shown. Due to the high material thickness of the cover element, there is only a slight or no shape adaptation in the region of the wall 10 of the shaped body. Only the cover element 15 is deformed accordingly. The peripheral wall 10 of the molded article may have little or no deformation as in 4 shown.

Are in place of the above elements 22 on the inner surface 21 the wall 20 the mold 2 and / or on the outside surface 31 the wall 30 of the mold core 3 Provided grooves, created by the peripheral wall 10 of the molding 1 in the 5 Shaping shown. Here are thin ribs 16 over the surface 18 the peripheral wall 10 in front. In a similar way, the cover element 15 pressed into the corresponding grooves in the surface of the mold or the mold core, so that the cover element 15 corresponding ribs and against moving relative to the original positioning in the mold 2 or on the mold core 3 is secured.

9 shows in principle the same design of the surface 18 the peripheral wall 10 of the molding 1 as 5 , Compared to this are the formed ribs 16 but mirror images of the ribs after 5 shaped. Ribs 16 the embodiment according to 5 have an approximately radially outwardly facing upper, ie in the direction of the shoulder 19 directed edge 160 and an oblique bottom, that is towards the end 12 of the molding 1 directed edge 161 on. Ribs 16 the embodiment according to 9 have in contrast an oblique upper edge 162 and an approximately radially outwardly facing lower edge 163 on.

Instead of providing ribs and / or grooves, it is also possible to provide otherwise shaped elements, such as, for example, punctiform projections and depressions on which the cover element 15 can also be maintained during injection of the molten material. In addition, a combination of ribs, grooves and punctiform projections and / or depressions is possible.

As in particular the 2 and 6 and 9 can be clearly seen, are the form-locking elements for holding the cover member 15 on the wall 10 of the molding 1 provided during the manufacturing process within the mold at the desired position in the region of the one end of the molded body into which the material melt is first introduced, that is, first made, since at this end the risk of entrainment of the cover member in injecting the material melt consists in the first place. Should the cover element 15 extend only over part of the surface of the molding, the positive-locking elements are arranged proximal to the end of the molding body where the cover element can be first detected by the molten material, since there is the risk of undesirable entrainment of the cover element 15 with the melted material.

Next that described above and in the embodiments shown embodiments of moldings and Devices for manufacturing such shaped bodies are still numerous more possible, in each case at least a form-fitting element a cover element against an undesirable Move against the molding in at least a direction during which production ensures. That, at least a positive locking element is usually after completion the molded body still on this and / or the cover element to recognize. In a device for producing the shaped body is at least a protruding element and / or a recessed element for providing a hold for securing the cover member in at least a direction against shifting it during the injection of the molten material provided.

1

moldings

2

mold

3

mold core

4

contraption

10

peripheral

11

end wall

12

The End

13

Support

14

thread

15

cover element

16

rib

17

groove

18

surface

19

shoulder

20

wall

21

palm

22

prominent element

23

channel

24

headboard

25

cavity

26

cylindrical section

27

formation

28

Injection site

30

wall

31

outer surface

32

prominent element

130

injection point

160

upper edge

161

lower edge

162

upper edge

163

lower edge

190

constriction

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10333158 A1 [0002, 0033]

Claims (28)

Molded body ( 1 ), in particular in container form, with at least one wall ( 10 ), wherein the molded body over at least a part of its wall with at least one molded-in cover element ( 15 ), characterized in that at least one interlocking element ( 16 . 17 ) for securing the cover element ( 15 ) against displacement relative to the molded body ( 1 ) is provided in at least one direction during the Einformvorgangs. Molded body ( 1 ) according to claim 1, characterized in that the at least one positive-locking element ( 16 . 17 ) by a projection and / or a recess in a cover element ( 15 ) facing surface of the molding ( 1 ) and the cover element ( 15 ) is formed. Molded body ( 1 ) according to claim 1, characterized in that the at least one interlocking element by a projection ( 16 ) and / or a recess ( 17 ) in the cover element ( 15 ) when engaging in a protruding and / or recessed element ( 22 . 32 ) a device ( 4 ) for producing the shaped body ( 1 ) is formed. Molded body ( 1 ) according to one of the preceding claims, characterized in that the at least one interlocking element by a rib ( 16 ) and / or groove ( 17 ) is trained. Molded body ( 1 ) according to one of the preceding claims, characterized in that the at least one positive-locking element is formed by a punctiform depression and / or a punctiform projection. Molded body ( 1 ) according to one of the preceding claims, characterized in that the shaped body ( 1 ) is formed predominantly rotationally symmetrical and the at least one positive locking element ( 16 . 17 ) over at least a part of the circumference of the shaped body ( 1 ) extends circumferentially about its axis of rotation. Molded body ( 1 ) according to one of the preceding claims, characterized in that the at least one positive-locking element ( 16 . 17 ) for securing the cover element ( 15 ) on the outside and / or inside of the shaped body ( 1 ) is provided. Molded body ( 1 ) according to one of the preceding claims, characterized in that the at least one positive-locking element ( 16 . 17 ) proximal to the injection site ( 28 ) a molten material during the production of the shaped body ( 1 ) or to its injection point ( 130 ) is provided. Molded body ( 1 ) according to one of the preceding claims, characterized in that the at least one positive-locking element ( 16 . 17 ) at the end of the molding ( 1 ) and / or the cover element ( 15 ) is arranged. Molded body ( 1 ) according to claim 8 or 9, characterized in that the at least one positive-locking element ( 16 . 17 ) in the material flow direction behind or in relation to the longitudinal direction of the molding ( 1 ) at an axial distance to the injection point ( 130 ) is arranged at this. Molded body ( 1 ) according to one of the preceding claims, characterized in that the shaped body ( 1 ) is a cartridge. Molded body ( 1 ) according to claim 11, characterized in that the at least one positive-locking element ( 16 . 17 ) in the material flow direction behind or at a distance from a shoulder ( 19 ) of the shaped body ( 1 ) is arranged. Contraption ( 4 ) for producing a shaped body ( 1 ), in particular according to one of the preceding claims, with at least one in a wall ( 10 ) of the shaped body ( 1 ) molded cover element ( 15 ), with a mold ( 2 ) and at least one in the mold ( 2 ) insertable mandrel ( 3 ), wherein between hollow mold ( 2 ) and mold core ( 3 ) a fillable with a molten material cavity ( 25 ), characterized in that the hollow mold ( 2 ) and / or the mandrel ( 3 ) at least one above and / or in-depth element ( 22 . 32 ) for preventing a displacement of the cover element ( 15 ) in at least one direction relative to the shaped body ( 1 ) or have. Contraption ( 4 ) according to claim 13, characterized in that the recessed element has a groove in the surface of the mold ( 2 ) and / or the mandrel ( 3 ). Contraption ( 4 ) according to claim 13, characterized in that the recessed element a punctiform depression in the surface of the mold ( 2 ) and / or the mandrel ( 3 ). Contraption ( 4 ) according to one of claims 13 to 15, characterized in that the projecting element is a rib-shaped element or a punctiform projection. Contraption ( 4 ) according to one of claims 13 to 16, characterized in that the projecting or recessed element ( 22 . 32 ) proximally or in the region of a feeder ( 23 ) of the molten material into the cavity ( 25 ) on the mold ( 2 ) and / or the mandrel ( 3 ) is provided. Contraption ( 4 ) according to any one of claims 13 to 17, characterized in that the projecting or recessed element ( 22 . 32 ) at the end of the mold ( 2 ) and / or the mandrel ( 3 ) is provided. Contraption ( 4 ) according to one of claims 13 to 18, characterized in that the projecting or recessed element ( 22 . 32 ) in the material flow direction behind the injection point ( 28 ) in the cavity ( 25 ) for the shaped body to be produced ( 1 ) on the mold ( 2 ) and / or the mandrel ( 3 ) is provided. Contraption ( 4 ) according to one of claims 13 to 19, characterized in that the device ( 4 ) is used for producing a shaped body in the form of a cartridge. Contraption ( 4 ) according to one of claims 13 to 20, characterized in that the projecting or recessed element ( 22 . 32 ) in the material flow direction at a distance from a formation ( 27 ) in the mold ( 2 ) for forming a shoulder ( 19 ) of the shaped body to be produced ( 1 ) on the mold ( 2 ) and / or the mandrel ( 3 ) is provided. Contraption ( 4 ) according to one of claims 13 to 21, characterized in that the projecting or recessed element ( 22 . 32 ) in a cylindrical section ( 26 ) of the cavity ( 25 ) and / or the mandrel ( 3 ) is provided. Cover element ( 15 ) for a shaped body ( 1 ) according to one of claims 1 to 12 and / or for use in a device ( 4 ) according to one of claims 13 to 22, characterized in that the cover element ( 15 ) at least partially on the at least one projecting and / or recessed element ( 22 . 32 ) and / or the at least one form-locking element ( 16 . 17 ) is formed formable. Cover element ( 15 ) according to claim 23, characterized in that the cover element ( 15 ) has a thickness of up to 250 microns and consists of a plastic and / or paper and / or metal. Method for producing a shaped article ( 1 ), in particular according to one of claims 1 to 12, with at least one in a wall ( 10 ) of the shaped body ( 1 ) molded cover element ( 15 ), in particular according to claim 23 or 24, in a mold ( 2 ) into which at least one mandrel ( 3 ) leaving a cavity ( 25 ) between mold ( 2 ) and mold core ( 3 ) can be inserted, characterized in that during the injection of molten material into the cavity ( 25 ) the cover element ( 15 ) on at least one protruding and / or recessed element ( 22 . 32 ) on the mold ( 2 ) and / or the mandrel ( 3 ) is held. A method according to claim 25, characterized in that in the cavity ( 25 ) injected material melt the cover element ( 15 ) against the at least one protruding and / or recessed element ( 22 . 32 ) presses. Method according to claim 25 or 26, characterized in that at least one interlocking element ( 16 . 17 ) in the cover element ( 15 ) and / or one on the mold ( 2 ) and / or the mandrel ( 3 ) formed wall of the shaped body ( 1 ) is formed. Method according to claim 25, 26 or 27, characterized in that the cover element ( 15 ) by the at least one protruding element and / or the at least one recessed element ( 22 . 32 ) in the material flow direction behind the injection point ( 28 ) of the molten material into the cavity ( 25 ) on the mold ( 2 ) and / or the mandrel ( 3 ) is held.