Injection molding of a device such as a cable holder with integrated wireless marker foil

Abstract

The present disclosure relates to injection molding of devices such as cable retainers with integrated wireless marker foil, in particular to a method for injection molding of devices (1) with integrated wireless tags (2), in particular cable ties, comprising the following steps: a) placing a marker foil (5) having two main surfaces (9a, 9b) separated by an edge (10) into a mold cavity (12) of an open mold (11), the marker foil being held in place by a support device (13); b) closing the mold; c) injecting an injection material (21) simultaneously and symmetrically with respect to a main extension plane of the marker foil (5) into the mold cavity portions (14a, 14b) adjoining the two main surfaces of the marker foil, the main extension plane being parallel to the two main surfaces of the marker foil (5), in order to simplify and speed up the manufacturing process of devices with integrated wireless tags or markers. Furthermore, the present disclosure relates to a corresponding molding device and to a corresponding device (1) with integrated wireless tags (2).

Description

[0001] This application is a divisional application of the invention patent application filed on November 6, 2020, with application number 202011230005.5 and entitled "Injection Molding Device for Cable Holder with Integrated Wireless Marking Foil". Technical Field

[0002] This invention relates to a foil overmolding process, and more particularly to an RFID or optical foil overmolding process for devices such as cable holders with integrated wireless tags. Background Technology

[0003] For products and processes of increasing size and complexity, marking or identifying the parts involved in the process and / or product becomes increasingly important. Therefore, a growing number of components, especially very small parts, need to be marked or identified within the corresponding products and / or processes. This can be accomplished using radio frequency identification (RFID) tags, such as RFID chips integrated into the corresponding tags. An alternative could be optical tags, such as barcodes or company logos integrated into the corresponding tags. These tags should be small, particularly flat, robust, and easy to manufacture. One possibility for addressing this issue is to mold RFID glass transponders into the tags, which could take the form of cable ties.

[0004] However, molding a glass transponder into a flat device such as a cable tie is a relatively complex and time-consuming process involving numerous steps. Furthermore, molding from other devices (such as chip cards, see FR2882680 B1, or gain tokens, see DE 69613341 T1) uses a relatively time-consuming process.

[0005] Therefore, the objective technical problem to be solved by the present invention is to simplify and accelerate the manufacturing process of devices with integrated wireless tags or markings. Summary of the Invention

[0006] This problem is solved by a method for injection molding a device with an integrated wireless tag.

[0007] One aspect relates to a method for injection molding an apparatus having an integrated wireless tag. Specifically, the apparatus having an integrated wireless tag can be a cable tie with an integrated wireless tag. The wireless tag can be an electronic tag, such as an RFID tag for radio frequency identification, or an optical tag, such as a barcode for optical identification. The method includes several method steps.

[0008] The first step involves placing a marking foil, having two (parallel) main surfaces separated by outer edges, as a wireless tag into a mold cavity of an open mold, where the marking foil is held in place by a support device. The support device may be at least partially part of the mold. The foil thickness may be less than 1 mm, preferably less than 0.4 mm, more preferably less than 0.2 or less than 0.15 mm. Specifically, the foil may have a sandwich structure with a tag-related layer, such as a chip and antenna layer, between two outer layers. Typically, to protect the tag-related layer, the outer layers are larger and may also be thicker than the tag-related layer, forming a protective boundary region or frame around the tag-related layer (i.e., the tag-related region). In the boundary region, the two outer layers are directly attached to each other, while in the region protected by the boundary region, the tag-related and therefore sensitive layer separates the two outer layers.

[0009] The next step is to close the mold or injection mold. Then, injection material, preferably thermoplastic, is injected simultaneously and symmetrically about the main extension plane of the marking foil into the mold cavity portion adjacent to the two main surfaces of the marking foil. The main extension plane of the marking foil is parallel to the two main surfaces of the marking foil. The mold cavity portion is a part or section of the mold cavity, i.e., the mold is a mold containing different sections, particularly a monolithic mold. Some of these sections form the cavity portion. Subsequently, a device with an integrated wireless tag can be ejected from the mold. Preferably, the method steps are performed in the aforementioned order. In particular, as described in more detail below, no additional injection step is performed, i.e., no additional step involving injecting material into the mold is performed.

[0010] Simultaneously, injecting the injection material symmetrically into the mold cavity portion of the two surfaces adjacent to the marking foil about the main extension plane has the effect that the forces on the marking foil are balanced on the opposing surface sides, i.e., the upper and lower sides of the foil. Therefore, the foil does not deform significantly in the direction perpendicular to its main extension plane, and thus is not damaged during molding. Furthermore, the device with integrated wireless tags, i.e., the device carrying the marking foil, can be very thin because the risk of the foil, especially the marking-related area of ​​the foil, being exposed to the environment is significantly reduced. Therefore, the marking foil can be overmolded without the prior step of stabilizing the foil using layer-by-layer molding as known in the prior art. Thus, the described method saves time and resources.

[0011] In an advantageous embodiment, the injection step described above into the cavity portion adjacent to the two main surfaces of the marking foil is accomplished using an inlet for injecting material, the inlet being positioned such that the injected material forced through the inlet contacts the edge of the marking foil, which is a first part of the marking foil, and subsequently flows simultaneously and symmetrically about the main extension plane of the marking foil along the two main surfaces of the marking foil. This can be achieved, for example, using an inlet formed as a slit extending parallel to the edge. In other words, material is injected from the lateral side of the marking foil into the mold cavity portion adjacent to the two main surfaces of the marking foil. Here, the lateral side is a side different from the upper and lower sides of the foil, which correspond to the two main surfaces of the marking foil. Here, the terms "upper" and "lower" are arbitrarily chosen to visually distinguish the two different sides, i.e., independent of the spatial orientation of the marking foil. Thus, the inlet of the cavity portion is oriented perpendicular to the main plane of the marking foil. Here, the orientation of the inlet is defined by the flow direction of the material through the inlet during injection and / or the normal vector of the cross-section of the inlet.

[0012] This offers the advantage that the injection material can be injected simultaneously and symmetrically into the mold cavity portions adjacent to the two main surfaces, and thus the forces balancing the upper and lower sides of the foil can be achieved very reliably, particularly compared to using two separate inlets on opposite sides (e.g., upper and lower) of the marking foil. Therefore, the process can be accelerated.

[0013] Therefore, it is particularly advantageous if the injection material is injected into the cavity portion or even the entire mold cavity only through the single inlet. It is also particularly advantageous if the inlet is a single inlet, i.e., the only inlet for injecting material into the cavity portion or even the entire mold cavity of the two main surfaces adjacent to the marking foil. This results in the advantage that the process is easier to control and can therefore be performed at an increased speed.

[0014] In another advantageous embodiment, the injection step includes forcing a flow of injection material through an inlet into the cavity portion, where the flow is divided by the edge of the marking foil into two equal-sized sub-flows flowing along the two main surfaces of the marking foil. Thus, considering the orientation of the inlet's cross-section perpendicular to the inlet, the orthogonal projection of the edge of the marking foil onto the region of the inlet divides the inlet's cross-section into two equal-sized regions. Here, the portion of the flow flowing along the edge of the marking foil and not "above and below" the foil—that is, the portion that cannot be projected onto the foil by orthogonal projection and therefore does not exert any force in a direction perpendicular to the main plane of the foil—can be ignored. Preferably, the orientation of the inlet is perpendicular to the orientation of the main plane of the marking foil; that is, the orientation of the inlet (which may be the orientation of its cross-section and / or the average direction of the injection material flow through the inlet during injection) may be parallel to the main plane of the marking foil, since, in the context of this disclosure, the orientation of a plane is defined by its normal vector.

[0015] This offers the advantage that a balance of forces on two opposing sides can be achieved with enhanced reliability—that is, a balance of forces on the upper and lower sides corresponding to the two main surfaces of the marking foil—and, in particular, foil vibration can be avoided. Therefore, the process can be further accelerated.

[0016] In another particularly advantageous embodiment, the device with integrated wireless tags is formed using a single injection step, i.e., by a so-called “single injection”, wherein the injection material is injected into the mold only once during the production process of the device.

[0017] This offers the advantage that the production process of the device is easier to control and requires less time.

[0018] In another advantageous embodiment, when held in place by a support device, the support device is in mechanical contact with the marking foil only in one or more areas of the marking foil, said one or more areas being at a minimum distance >0 mm, particularly >0.3 mm, preferably >0.6 mm from the marking-related area of ​​the marking foil. This distance is measured in the main plane of the marking foil. The marking-related area of ​​the marking foil can be an area of ​​RFID foil, such as the area where the chip and antenna are located. Thus, the marking-related area can be the chip antenna area of ​​the marking foil, as long as the marking foil includes or is used for a chip antenna foil of radio frequency tagging such as RFID tags. Therefore, the marking-related area is not in mechanical contact with the support device and / or the mold. In other words, the marking-related area floats freely in the cavity and is held in place only by the frame of the foil. As an alternative or supplement to the marking-related area, the marking-related area can be, for example, the chip antenna area of ​​a chip antenna foil, particularly an RFID tag foil, or an optical code area, such as an area where a barcode, matrix code, etc., of the optical marking foil is arranged.

[0019] This offers the advantage that the marking-related area of ​​the marking foil is protected from environmental influences by the injection material, thereby enhancing the reliable function of the wireless tag. Furthermore, during the production process, the support device is less likely to damage the marking-related area of ​​the marking foil. Additionally, the force applied to the foil can be increased, resulting in stable and precise fixation of the foil during injection of the injection material, again enabling increased process speed.

[0020] In another advantageous embodiment, the placement step includes holding the marking foil in place by vacuum and / or by positioning pins. Accordingly, the support device includes vacuum and / or pin devices for holding the marking foil in a defined position.

[0021] This provides the advantage of enabling particularly precise positioning of the marking foil, which further increases the accuracy of force balance on different sides of the marking foil, adding to the aforementioned advantages.

[0022] In another advantageous embodiment, the closing step includes clamping or capturing the marking foil between at least one pair of opposing surfaces of the support device, preferably an even number of pairs, such as at least six, eight, ten, or twelve pairs of mating surfaces. The respective opposing surfaces can be formed by independent movable portions of the mold, for example, in an injection mold, one surface of a corresponding pair of opposing surfaces in plate A, and the other surface of a corresponding pair of opposing surfaces in plate B. When the mold is closed, these opposing surfaces are pressed toward each other, thus securing the marking foil in a given position, i.e., its initial position. Alternatively or additionally, the support device may include additional elements, such as spring elements and / or hydraulic elements, wherein at least one surface in each pair is pressed against the other surface by the spring element and / or hydraulic element. Thus, the support device can also be used as a clamping or holding device. Preferably, the marking foil is clamped at its edges, meaning that when the mold is closed, the opposing surfaces of the corresponding pair of opposing surfaces are partially in contact with each other. The opposing surfaces preferably contact the marking only outside the aforementioned marking-related area, i.e., only at the frame.

[0023] This provides the advantage of the marking foil being held in its position particularly reliably. This ensures a particularly good balance of forces on opposite sides of the foil and allows for injection molding at increased speeds while maintaining the reliable function of the marking foil and therefore the wireless marking.

[0024] In another advantageous embodiment, the marking foil is or includes a chip antenna foil for radio frequency (RFID) tagging, particularly a radio frequency identification (RFID) foil, preferably for passive tag RFID. Additionally or alternatively, the marking foil is or includes an optical foil for optical tagging, particularly an optical barcode foil for optical barcode identification and / or an optical matrix foil for optical matrix code identification and / or an optical tag or optical image foil for optical identification or image identification. In the case of RFID tagging, the injection material is preferably transparent to the radio frequency signals used during tag or mark identification. This is generally the case for thermoplastics. In the case of wireless optical tagging, the injection material is preferably transparent to optical signals, i.e., to light in the visible spectrum or to a given sub-spectrum of the visible spectrum.

[0025] The proposed method is particularly advantageous for chip antenna foils, especially RFID foils, as these foils are highly sensitive and therefore typically require several injection steps during injection molding. Therefore, using the proposed method, devices with integrated radio frequency tags, especially RFID tags, can be reliably and rapidly produced. Regarding optical markings or signs, the proposed method avoids foil deformation during the molding process, resulting in improved readability, and especially in the case of company logos or images, leading to clear and unambiguous presentation of the mark or image.

[0026] In another advantageous embodiment, the device with an integrated wireless tag can be a cable holder or token, particularly a game coin or smart / chip card, or an intermediate product for another device. Specifically, the device with an integrated wireless tag can be a flat device, i.e., a device whose main extension in the main extension direction is much larger than its extension in the minimum extension direction. For example, the length can be at least four times its thickness, preferably at least ten times or even at least 15 times larger.

[0027] This provides the advantage that the foil is particularly suitable for inclusion in the apparatus, and since the apparatus is typically used for mass production, the effect of accelerating the production process is particularly high.

[0028] On the other hand, it relates to a device for injection molding an integrated wireless tag according to the above method, specifically a molding device for cable ties.

[0029] On the other hand, it relates to a device having an integrated wireless tag formed by injection molding according to any of the methods, particularly a cable tie.

[0030] The advantages and advantageous implementations of the molding apparatus and the apparatus with integrated wireless tags correspond to the advantages and advantageous implementations of the method.

[0031] The aforementioned features and combinations thereof, as well as the features and combinations thereof disclosed in the accompanying drawings, or the drawings themselves, can be used not only individually or in the aforementioned combinations, but also in combination with other features or not in combination with some of the disclosed features, without departing from the scope of the invention. Therefore, embodiments not explicitly shown and described in the drawings but generated by individually combining the various features disclosed in the drawings are also part of the invention. Thus, embodiments and combinations of features excluding all features of the originally set forth independent claims will be considered disclosed. Furthermore, embodiments and combinations of features that differ from or exceed the combinations of features described in the dependent claims should be considered disclosed. Attached Figure Description

[0032] Exemplary embodiments are further described with reference to the following schematic diagrams. In these diagrams, Figure 1 A perspective view of an exemplary embodiment of a device with an integrated wireless tag, here being a cable tie, is shown. Figure 2 A perspective view of an exemplary embodiment of the marking foil is shown; Figure 3 It shows having Figure 2 A perspective view of an exemplary embodiment of the opening mold for the marking foil; Figure 4 It shows Figure 3 A top view of the opening mold; and Figure 5 A perspective view of a 3D illustration is shown in an exemplary embodiment of injecting material into a closed mold.

[0033] In the accompanying drawings, elements that are identical or have the same function have the same reference numerals. Detailed Implementation

[0034] Figure 1 A perspective view of an exemplary embodiment of a device 1 having an integrated wireless tag 2 is shown. In this embodiment, device 1 is a cable tie, wherein the wireless tag 2 is disposed between the head 3 and the tail 4 of the cable tie 1. The wireless tag 2 is or includes a marking foil 5, which in this embodiment is a chip antenna foil for RFID, or simply RFID foil.

[0035] Marking foil 5 in Figure 2The diagram shows this in more detail. The tag foil 5 has a tag-related region 6 at its center, which is surrounded by a protective edge or frame 7. In this embodiment, the tag foil 5 also has two holes 8a, 8b at opposite ends in the Z direction for precisely adjusting the tag foil 5 to its proper position. In this embodiment of the tag foil as an RFID foil, the tag-related region is the antenna chip region, where the antenna and chip required for the RFID function of the tag foil 5 are located. Therefore, the tag-related region 6 is more susceptible to damage than the frame 7.

[0036] exist Figure 2 The image shows a view of one of the two main surfaces 9a and 9b of the marking foil 5. For illustrative purposes, the shown main surface may be referred to as the upper main surface 9a without delimiters, as its orientation in space is arbitrary. The upper main surface 9a and the lower main surface 9b (not currently visible) are separated from each other by their outer edges 10.

[0037] Figure 3 A perspective view of an exemplary embodiment of a mold 11 for an injection molding apparatus 1 is shown, in which the apparatus is a cable tie with an integrated wireless tag 2. Here, for illustrative purposes only, Figure 2 The marking foil 5 is placed into the mold cavity, where it is held in place by a support device 13, which will be referenced later. Figure 4 To describe in more detail.

[0038] The marking foil 5 is held in place by the support device 13, such that the mold cavity portion 14 including the marking foil 5 is divided into two mold cavity portions 14a, 14b adjacent to the two main surfaces 9a, 9b. Advantageously, the two mold cavity portions 14a, 14b have equal volumes. Note that for illustrative purposes, only half of the mold 11 is shown, which may be referred to as the lower half of the mold 11.

[0039] Therefore, the edge 10 of the marking foil 5 is fixed in place such that the injection material flow injected into the mold cavity 12 at the upper left of the figure (i.e., the injection material flow flowing from the injection site 15 (here, corresponding to the head 3 of the cable tie) in the X direction through the inlet 16 into the mold cavity portion 14) is divided by the edge 10 into two sub-flows flowing along the two main surfaces 9a, 9b of the marking foil 5, and these two sub-flows have equal dimensions (see Figure 10). Figure 5 Therefore, in this embodiment, the inlet 16 is positioned such that when the injection material is injected into the closed mold 11, the injection material contacts the edge 10 of the marking foil 5 before subsequently flowing along the two main surfaces 9a, 9b of the marking foil 5 (see...). Figure 5Edge 10 can be considered to be located at the vertical center of inlet 16, resulting in a horizontal segmentation of the injected material 21 flow. Figure 5 Because, corresponding to two sub-flows of equal size, the orthogonal projection onto the diameter region of inlet 16 divides the diameter region into two regions of equal size. Here, from Figure 4 It can also be clearly seen that the orientation of the inlet 16 and the flow direction of the injected material in the injection step extend parallel to the main surfaces 9a and 9b, that is, parallel to the main extension plane of the marking foil 5, i.e., the xz plane.

[0040] Figure 4 It shows Figure 3 A top view of the mold 11. The support device 13 includes multiple pairs of opposing surfaces 17a, 17b, 18a, 18b, 19a, 19b, of which only one pair of opposing surfaces from each pair is shown. The second half of the mold 11 includes (preferably symmetrical) the second half of the mold cavity portion 14, namely the mold cavity portion 14a. Figure 3 (not shown here).

[0041] When the marking foil 5 is placed into the mold 11, it is positioned together with the frame 7 on the surfaces 17a to 19b to avoid mechanical interference between the support device 13 and the marking-related area 6, particularly the RFID foil's chip and antenna. Therefore, the marking-related area of ​​the marking foil 5 floats freely within the mold cavity 12. Figure 4 As shown, surfaces 17a, 17b, 18a, 18b, 19a, and 19b preferably contact the marking foil 5 at their edges 10, such that when the mold 11 is closed, the marking foil 5 is sandwiched between some of the opposing surfaces 17a, 17b, 18a, and 18b, preferably but not necessarily between all the opposing surfaces 17a to 19b. If sandwiched at the edges, this results in the hardening of the edges 10, which promotes the injection of the material 21 ( Figure 5 Simultaneously and symmetrically, the material flows into the mold cavity portions 14a and 14b of the two main surfaces 9a and 9b adjacent to the marking foil 5, balancing the forces on the upper and lower sides of the marking foil 5.

[0042] In this embodiment, the paired opposing surfaces 17a to 19b are arranged to be symmetrical about the main flow direction of the injection material 21 (here, the X direction) and about the main extension of the marking foil 5 along a line perpendicular to the flow direction (i.e., the Z direction). That is, in the current embodiment, for each pair of opposing surfaces 17a, 18a located upstream in the flow direction (left side of the figure), there is a corresponding symmetrical pair 17b, 18b located downstream in the flow direction (right side of the figure). In this embodiment, the two pairs of opposing surfaces 17a, 17b closest to the center of the inlet 16 have a smaller area than the outer pairs of opposing surfaces 18a, 18b, 19a, 19b further away from the inlet 16. This combines enhanced reliability in retaining the marking foil 5 with minimal intrusion of the injection material flow through the mold cavity 12 via the support device 13. This combines enhanced reliability in retaining the label foil 5 with minimal protrusion of the injection material flow through the mold cavity 12 via the support device 13. In this embodiment, a pair of opposing central surfaces 17a upstream vertically divide the injected material flow through inlet 16 into two equal-sized sub-flows. This corresponds to the horizontal division by edge 10 explained above.

[0043] In this embodiment, the outermost paired opposing surfaces 19a, 19b located at the opposite ends of the marking foil 5 with the greatest distance have the characteristics of a vacuum device. Therefore, in this embodiment, at least one of the respective surfaces has a hole 20, which, when connected to a vacuum, allows the marking foil 5 to be held in place by the vacuum. Accordingly, the outermost opposing surfaces 19a, 19b do not contact the edge 10 here. The outermost paired opposing surfaces 19a, 19b also have the largest area in this embodiment because they are furthest apart from each other, and therefore the tension occurring between the paired opposing surfaces 19a, 19b is greater than the tension occurring between paired opposing surfaces that are closer to each other (e.g., paired opposing surfaces 17a, 17b).

[0044] Figure 5 It shows that for Figure 3 and Figure 4 The exemplary mold 11 shown illustrates the flow of injection material 21 at different times t1, t2, and t3. Along the injection direction D, which extends parallel to the x-direction, the injection material 21 flows at injection site 15 at time t1. Figure 3 , Figure 4The material 21 enters the mold cavity 12. When it fills the mold cavity 12 at time t2, it begins to enter the mold cavity region 14 with the marking foil 5 through inlet 16. At a third subsequent time t3, as is evident through the edges 21a and 21b of the injection material 21, it simultaneously and symmetrically moves about the main extension plane of the marking foil 5 into the mold cavity portions 14a and 14b adjacent to the two main surfaces 9a and 9b of the marking foil 5. Therefore, the lateral injection of the injection material 21 advantageously results in a balanced vertical force (vertical involving...) on the marking foil 5. Figure 5 y direction in ).

[0045] The effect of this is that the marking foil 5 remains intact and is well protected by the injection material 21, allowing for the production of injection molding devices with integrated wireless tags using a single injection step.

Claims

1. A method for injection molding an apparatus (1) having an integrated wireless tag (2), the method comprising the following steps: a) A marking foil (5) having two main surfaces (9a, 9b) separated by an edge (10) is placed into the mold cavity (12) of the opening mold (11), wherein, The marking foil (5) is held in place by a support device (13), wherein the support device (13) contacts the marking foil (5) only in one or more regions of the marking foil (5), wherein the minimum distance from the one or more regions to the marking-related region (6) of the marking foil (5) is >0, wherein the distance is measured in the main extension plane of the marking foil (5); b) Close the mold (11); c) Injecting material (21) simultaneously and symmetrically about the main extension plane of the marking foil (5) into the mold cavity portion (14a, 14b) adjacent to the two main surfaces (9a, 9b) of the marking foil (5), such that the forces on the opposite surface sides of the marking foil are balanced, the mold cavity portion being part of the mold cavity (12), the main extension plane being parallel to the two main surfaces (9a, 9b) of the marking foil (5). The device (1) having the integrated wireless tag (2) is formed using a single injection step, and the device (1) is a cable tie, cable retainer, token, or card. In step c), the injection is performed using an inlet (16) leading to the cavity portions (14a, 14b), the inlet being positioned such that the injection material (21) forced through the inlet (16) contacts the edge (10) of the marking foil (5), which is the first part of the marking foil (5), and then flows along the two main surfaces (9a, 9b) of the marking foil (5). The closing step b) includes clamping the marking foil (5) between at least one pair of opposing surfaces (17a, 17b, 18a, 18b, 19a, 19b) of the support device (13).

2. The method according to claim 1, characterized in that, Injection step c) includes forcing a flow of injection material (21) through the inlet (16) into the cavity portion (14a, 14b), wherein the flow is divided by the edge (10) of the marking foil (5) into two equal-sized sub-flows flowing along the two main surfaces (9a, 9b) of the marking foil (5).

3. The method according to claim 1, characterized in that, Placement step a) includes holding the marking foil (5) in place by vacuum and / or by positioning pins.

4. The method according to claim 1, characterized in that, The marking foil (5) is a chip antenna foil used for radio frequency marking.

5. The method according to claim 1, characterized in that, The marking foil (5) is or includes optical foil for optical marking.

6. The method according to claim 1, wherein, The device is a game coin.

7. The method according to claim 1, wherein, The minimum distance is > 0.3 mm.

8. The method according to claim 1, wherein, The minimum distance is > 0.6 mm.

9. The method according to claim 1, characterized in that, Closing step b) includes clamping the marking foil (5) between a set of at least 6, at least 8, at least 10, or at least 12 pairs of even-numbered matching surfaces (17a, 17b, 18a, 18b, 19a, 19b) of the support device (13).

10. The method according to claim 1, characterized in that, The marking foil (5) is an RFID foil for radio frequency identification.

11. The method according to claim 1, characterized in that, The marking foil (5) is an RFID foil used for passive tag radio frequency identification.

12. The method according to claim 1, characterized in that, The marking foil (5) is or includes optical barcode foil and / or optical matrix foil and / or optical identification or optical image foil.

13. A molding apparatus for injection molding an apparatus having an integrated wireless tag (2) according to any one of the preceding claims.

Images