DE102018115880A1 - Method for impact-side profile rubber compound and connection layer - Google Patents

Abstract

The object of the present invention is to provide a simplified method for the automated production of an impact-side profile rubber compound, wherein the profile rubber compound should be able to be implemented quickly and reliably.
The method according to the invention for the automated production of an abutting connection of profiled rubber sections (2a, 2b) by joining the abutting cut surfaces (1a, 1b) of the profiled rubber sections (2a, 2b) using a connecting layer (3) consists of the following method steps:
that an activatable connection layer (3) is applied or arranged on a first cut surface (1a) of the first profile rubber section (2a),
in that subsequently an application of the profiled rubber section (2a) to a carrier component (4) takes place and a second profiled rubber section (2b) is applied to the carrier component (4), in which case the second sectional surface (1b) of the second profiled rubber section (2b) forms the connecting layer (FIG. 3) and to the first cut surface (1a) is aligned and
- That subsequently an activation of the connecting layer (3) takes place and thus the impact-side connection of the profile rubber sections (2 a, 2 b) is produced.

Description

The invention relates to a method for the automated production of a shock-side profile rubber compound, in particular as a compound for a rubber profile with a trained as a hollow profile sealing profile.

The method for producing a shock-side profile rubber compound is provided in particular for the connection of two profile rubber sections at the ends of a profile rubber to be joined together, for example for producing a circumferential profile rubber. The circumferential profile rubbers are used in particular for sealing on motor vehicle parts or openings in motor vehicle parts, such as on motor vehicle doors, roof openings or door openings. Likewise, with the method two profile rubber sections can be connected to a profile rubber strand.

Methods and apparatus for producing a shock-side profile rubber compound, in particular for circumferential hollow profile sealing rubbers on motor vehicle doors are known in different designs.

So is out of the EP 1915270 B1 a method for joining the joint of two coincidentally profiled ends of a sealing profile known. For this purpose, the ends of the rubber profile are moved away from each other to create a working gap. In the working gap, a welding foil is introduced. After merging the ends of the sealing profile is carried out by supplying heat energy, a welding of the ends of the sealing profile.

From the EP 3047963 A1 For example, a method using two at least two-layer films or a single-layer film and a at least two-layer film is known. The films are attached to the cut surfaces of the two ends of the profile rubbers to be joined and glued after positioning the profile rubbers by means of the films formed for this purpose.

The object of the present invention is to provide a simplified method for the automated production of an impact-side profile rubber compound and a connecting layer, wherein the profile rubber compound should be able to be implemented quickly and reliably.

The invention solves the task with the features of the main claim.

The invention relates to a method for the automated production of an impact-side connection of profile rubber sections by joining the impact-side cut surfaces using a connection layer.

The term "bonding" in the context of the invention comprises joining methods that produce a permanent connection of the profile rubber sections, in particular bonding, welding, vulcanization, fusion, entering a chemical compound or the mixing of the materials at the boundary layer and other cohesive joining methods. These terms are thus used synonymously. According to the invention, provision is made for an activatable connection layer to be applied to the first cut surface of the profile rubber sections to be joined on the cut surface side, for example by means of a feed device. The application and thus the arrangement of the bonding layer takes place in particular by adhering to the first cut surface. Thus, the cut surface of the first profile rubber section is connected to the connection layer at least for the duration of the connection process. The formulation implies that the bonding layer only partially covers the cut surfaces. In particular, the foot of the profile rubber section can remain free of the connection layer, so that the connection layer is applied only in the region of the sealing profile. Subsequently, the profile rubber sections are applied to a support member, such as a corresponding body component or a door. The application can be realized in particular by gluing, clip connections or tongue and groove joints. Preferably, the profile rubber sections are adhered to the carrier component accordingly. The profile rubber sections are at door seals the two ends of a circumferential / endless profile rubber.

Optionally, the second profile rubber section can be cut to the required length on the carrier component at the end of the application. This ensures that with exact cutting the cut surfaces of the profile rubber sections always have the optimum length for connection. At the end of this process step, the profile rubber sections are completely or almost completely adhered to the support member. Thus, the profile rubber sections are connected in their end position with the support member.

During the application of the second profile rubber section, the latter is aligned such that the profile rubber sections are aligned with one another in the connection area or are arranged relative to one another such that the cut surfaces of the two profile rubber sections are preferably congruently opposite one another. In this case, the arrangement may be provided such that the second cut surface either rests directly on the connection layer or a gap / gap remains between the second cut surface and tie layer.

After applying the profile rubber on the support member, the cut surfaces are thus positioned opposite each other. By the subsequent activation of the connecting layer, for example by heat input, the bonding of both profile rubber sections can take place in its end position.

Subsequently, the connection layer is activated. This means that the connecting layer, for example by heating or another energy, for example, becomes adhesive or connecting and thus a permanent connection between the connecting layer and one or both cut surfaces is produced. Further possibilities of activation are disclosed in the subclaims. For this purpose, the second sectional area of the second profile rubber section can subsequently be brought together with the activated connection layer. An appropriate compression or contact pressure is optionally realized by a slight excess length of the profile rubber sections or corresponding, the profile rubber sections leading, gripping elements. Thus, the two profile rubber sections are joined together on the impact surface side.

The gluing or bonding due to the activation takes place automatically.

Thus, there is a permanent impact-side connection of the second sectional surface of the second profile rubber section with the connecting layer and thus with the first sectional surface of the first profile rubber section.

According to the teaching of the invention, the two profile rubber sections can thus be permanently glued / bonded to the surface of the impact area by means of a connecting layer in two phases.

The invention task is further solved by a method having the features of the independent second claim. The difference from the main claim consists in the fact that first the first profile rubber section is applied to the carrier component and subsequently the connecting layer is adhered to the second sectional surface of the second profile rubber section. Thereafter, the second profile rubber or profile rubber section is applied.

Advantageous embodiments of the method for producing a shock-side connection of profile rubber sections are disclosed in the subclaims. The descriptions refer to the main claim, but are to be understood in an analogous manner for the sibling claim.

According to an advantageous embodiment of the invention, it is provided that the second profile rubber section is applied to the carrier component in such a way that the second cut surface is initially spaced from the connecting layer on the first cut surface or the second cut surface with connecting layer to the first cut surface. This embodiment provides a possibility of a machine easily manageable arrangement of arranged on the respective sectional surface connecting layer and each other sectional area without connecting layer ready. Thus, before or at the beginning of the activation, there is a gap between the connecting layer and the second cut surface which is closed during the activation or the production of the connection.

According to an alternative embodiment of the invention, the second cut surface contacts the bonding layer on the first cut surface or the first cut surface contacts the bonding layer on the second cut surface during activation. Accordingly, the corresponding application of the second profile rubber section takes place beforehand. By the contact bonding and thus the permanent connection of the profile rubber sections is realized in the activation of the connecting layer. The cut surfaces or the cut surface and the connection layer can, but need not be merged here.

According to a development of the invention, it is provided that before the activation or with onset of activation or immediately after activation of the connecting layer, the second cut surface and / or the first cut surface is moved toward the connection layer and optionally pressed against it

Before or with insertion or immediately after the activation of the connecting layer, a gap possibly resulting from the spacing is thus closed, so that the cut surfaces and the connecting layer come into contact and thus the intended connection is produced. It is also possible that the respective, the connecting layer contacting or carrying cut surface is pressed against the bonding layer.

The gap can be closed in different ways or the contact pressure can be realized. Once a movement of the first and / or second cut surface can be actively brought to the connection layer. It is also possible that a profile rubber section is locked during activation and by loosening the locking due to the elasticity of the rubber, the respective sectional area of the connecting layer is pressed. Likewise, it is possible that the connection layer and / or at least one profile rubber realize a longitudinal expansion due to the activation and thus the gap is closed. In all cases, the connection of both profile rubber sections can be realized by the parallel activation of the connection layer.

According to an advantageous embodiment of the invention, the connecting layer is formed in a film-like, film-like and / or plate-like manner. Foil-like or film-like connecting layers are realized for example as a tape-like or as a welding film. The film-like or film-like compound layer is easy to handle by machine and offers the elasticity that is appropriate for the profile rubbers. Plate-like formations, in contrast to the film-like training on a rigidity, which further improves the machine handling. The stiffness should be lost during activation, so that the intended use of the profile rubber is made possible. The film-like compound includes a fluid-like compound layer.

According to an embodiment of the invention, the connecting layer comprises a plurality of levels, the levels remaining after the activation of the connecting layer or at least partially mixing.

According to one embodiment of the invention, the connection layer may be formed with a self-adhesive plane. The self-adhesive layer can be realized in particular as a pressure-sensitive adhesive layer, such as with an adhesive tape. With this self-adhesive pressure-sensitive adhesive layer, the activatable bonding layer can be applied or glued to the respective cut surface.

Thus, the invention offers the advantage that the connection layer can be optimally positioned without the carrier component could impair the positioning. The self-adhesive trained level realized in each case, the connection of the connecting layer and the respective sectional area during the connection process. The application of the rubber profile is carried out with a, up to the self-adhesive trained and already applied to a cut surface or positioned level, not further adhesive bonding layer, since this is not yet activated. This can be done by a quick machine gluing, without having to pay attention in the meantime to avoiding unintentional bonding of the connecting layer.

According to a development of the invention, the bonding layer is realized by a fluid application to the first or second cut surface.

According to a further embodiment of the invention, the connecting layer consists of a thermally activatable material. The bonding layer consists for example of a thermoplastic material such as a welding foil or a hot melt adhesive.

The activation of the bonding layer takes place by heating by means of induction or heat radiation or a reaction of a reactive multi-layer (RMS) which is integrated into the bonding layer and can be triggered, for example, by an arc.

The known RMS films consist of at least two mostly metallic materials that can exothermically react with each other. RMS films are produced by magnetron sputter deposition, with several hundred to several thousand alternating single layers each formed in the nanometer range. The exothermic chemical reaction is started by an activation energy. The activation energy can thus be introduced, for example, by means of an electrical break spark or arc so an arc. The activation energy causes a phase transition of the metastable RMS materials. This releases energy in the form of heat. This heat activates the reaction again in neighboring areas. As a result, a self-sustaining thermal wave forms through the RMS foil. In this case, there is so much energy that, for example, a solder or the base material itself located on the RMS and the component to be joined can be melted. The RMS can thus be used as a heat source for connecting two components. Particularly advantageous in this technology is the very low heat input into the components to be joined due to the reaction occurring within a few milliseconds, whereby the components are heated only superficially and thus no Gefügeschädigungen occur. Thus, a very low-stress joining is possible. In addition, a high electrical and thermal conductivity is ensured by the metallic materials. The RMS foils can be structured using scissors or rotary knives, punched or laser-controlled or via masks in the case of direct deposition of the RMS onto components, thus adapting to specific contours. Thus, the RMS foils can also be adapted to the respective cross sections of the profile rubber sections or sealing profile sections.

The appropriate activation of the connecting layer is carried out according to this development by heating at least the Link layer. The thermal energy is supplied by arranging corresponding energy sources, such as radiant heaters, infrared radiators or arc-generating contacts in the region of the connecting layer. As a result of the energy supply, rapid, reliable and permanent bonding takes place by mixing or fusion or bonding of the bonding layer to the first or second or both cut surfaces of the profile rubber sections. It can be provided that the adhesive surface of the bonding layer dissolves or is melted with. It is also possible that the adhesive-formed surface further realizes the connection between the connection layer and in each case the first or second cut surface.

According to an advantageous development of the invention, the connecting layer is a double-sided adhesive tape. The two pressure-sensitive adhesive layers each form the corresponding levels of the connecting layer. The activation of the bonding layer takes place here by the removal of a protective or separating film arranged on the side of the bonding layer facing the first or second cut surface. The bonding takes place by actively or passively pressing the second or first cut surface against the bonding layer.

According to a further embodiment of the invention, it is provided that for the activation of the bonding layer, the cut surfaces of the profile rubber sections to be joined are brought into a matching cross-sectional shape and / or suitable cross-sectional shape for the bonding. For this example, the profile predetermining grippers for handling the rubber profiles can be designed accordingly. Likewise, guide elements for the profile rubbers can be designed accordingly to realize this function. In this way, the profile rubbers can be positioned and interconnected with each other even with certain deviations of the profile exactly.

According to an advantageous development of the invention, a visual interface detection or connection point detection of the profile rubber sections and / or cut surfaces takes place. This makes it possible to control the exact realization of the compound during the phases of the preparation of the compound and to correct it if necessary.

The invention is further achieved by the provision of a tie layer having the features specified in claim 14. The connecting layer is formed such that it covers the cut surfaces of the profile rubber sections to be joined at least partially, preferably in the region of the sealing profile of the profile rubber, and at least one side of the connecting layer comprises a plane which adheres through activation and / or merges with the cut surfaces. The profile rubber section, on the sectional surface of which the connecting layer is applied, is thus easy to handle before the activation of the layer to be bonded, without there being any unintentional sticking. Only when both profile rubber sections to be bonded are in the exactly aligned position does the activation take place and thus the bonding of the two profile rubber sections takes place. This makes it possible to realize a precise bond quickly and with little effort.

According to an advantageous embodiment of the bonding layer according to the invention, the plane to be bonded and / or to be fused is formed as a thermally activatable plane. Due to the thermal activation by means of heat supply, the connection can be easily realized inexpensively and easily automated.

According to an expedient embodiment of the bonding layer according to the invention, this comprises at least one plane consisting of a pressure-sensitive adhesive. The plane consisting of a pressure-sensitive adhesive is suitable for adhering the bonding layer to the first cut surface of the first profile rubber section or the second cut surface of the second profile rubber section with little effort and thus to fix it on the first or second profile rubber section at least for the duration of the bonding process. The connecting layer can thus be moved with the profile rubber section in the intended end position. Thus, the handling of the profile rubber section and thus the process for bonding the two cut surfaces of the profile rubber sections to be joined is simplified.

Advantageous embodiments of the invention will be explained in more detail with reference to the drawings.

• 1 eine Perspektivdarstellung eines Profilgummiabschnittes mit der ersten Schnittfläche und der aufzubringenden Verbindungsschicht,
• 2 die Darstellung des Verfahrensschrittes des Applizierens eines Profilgummiabschnittes mit Verbindungsschicht auf der Schnittfläche als erste Schnittfläche auf das Trägerbauteil,
• 3 die Darstellung des Verfahrensschrittes des Applizierens des anderen Profilgummiabschnittes auf das Trägerbauteil und das Zusammenfügen der zweiten Schnittfläche mit der Verbindungsschicht,
• 4 die beiden applizierten Profilgummiabschnitte mit zwischen den Schnittfläche angeordneter Verbindungsschicht vor Aktivierung der Verbindungsschicht für eine stoßseitige Verbindung und
• 5 beiden applizierten Profilgummiabschnitte mit zwischen den Schnittflächen angeordneter Verbindungsschicht nach aktivierter Verbindungsschicht und erfolgter stoßseitiger Verbindung.

Show it:

• 1 a perspective view of a profile rubber section with the first sectional area and the connection layer to be applied,
• 2 the representation of the method step of applying a profile rubber section with a bonding layer on the cut surface as the first cut surface on the carrier component,
• 3 the representation of the process step of applying the other profile rubber section on the support member and the Joining the second cut surface with the tie layer,
• 4 the two applied profile rubber sections with arranged between the interface connection layer before activation of the connection layer for a shock-side connection and
• 5 two applied profile rubber sections with connecting layer arranged between the cut surfaces after the activated connection layer and the impact-side connection.

In 1 is a perspective view of the first profile rubber section 2a with the first cut surface 1a and the tie layer 3 shown. The arrow shows how the film-like connecting layer 3 on the cut surface 1a is applied. The connection layer 3 is on the cut surface 1a facing side with a pressure-sensitive adhesive (not shown), the at least for the duration of the bonding process, a durable bond with the cut surface 1a of the profile rubber 2a guaranteed.

The connection layer 3 covers the cut surface here 1a of the profile rubber section 2a only partially. Here is the foot 5 of the profile rubber section 2a with which the profile rubber section 2a on the carrier component 4 is glued on, not from the tie layer 3 covered. Thus, below only the actual sealing profiles 6 the profile rubber sections 2a . 2 B through the tie layer 3 connected with each other. It can also be provided that the connection layer 3 also completely over the cut surfaces 1a . 1b extends. Likewise, a supernatant over the cut surfaces 1a . 1b on the inside and / or outside of the cut surfaces 1a . 1b possible.

The connection layer 3 may be implemented as an RMS layer. As described above, this layer consists of a layering of different metal plates in the nanometer range. By an arc ignition, the activation is triggered by an exothermic reaction at high heat. The heat development leads to the fusion of the two cut surfaces 1a . 1b together.

In 2 is the subsequent process step shown. This includes the application of the first profile rubber section 2a on the carrier component 4 such as a door 4 or a body part 4 a motor vehicle, so that the first profile rubber section 2a with the carrier component 4 connected in its final position. Usually this is the foot 5 of the profile rubber section 2a provided with a pressure-sensitive adhesive layer (not shown), the application by gluing the profile rubber section 2a on the carrier component 4 allows.

In 3 is the subsequent process step, the application of the second profile rubber section 2 B on the carrier component 4 includes shown. This second profile rubber section 2 B should with its second cut surface 1b with the first profile rubber section 2a through the on the first cut surface 1a arranged connection layer 3 glued or connected. The two profile rubber sections 2a . 2 B can be the two ends of a ring-shaped or circumferentially or continuously produced profile rubber. Likewise, the profile rubber sections 2a . 2 B belong to different profile rubbers that are to be joined together. The second profile rubber section 2 B has a length through which it is possible for the second cut surface 1b opposite to the first cut surface 1a or to the connection layer 3 aligned on the carrier element 4 can be applied.

If the second profile rubber section 2 B completely on the carrier element 4 applied so adhered, here touch second cut surface 1b and connecting layer 3 , This arrangement is in 4 shown. Now the activation of the connection layer 3 take place by means of a heating element (not shown) realized heat supply. The heating element may be a correspondingly arranged infrared radiator, for example. The heat supply becomes the bonding layer 3 made of thermoplastic material on / melted, so that the bonding layer 3 with the second cut surface 1b of the second profile rubber section 2 B combines. In addition, the connection layer 3 also permanently with the first cut surface 1a connect, wherein the pressure-sensitive adhesive layer also dissolve completely or partially or with the thermoplastic material of the bonding layer 3 can mix. This compound prepared according to the invention is in 5 shown. With the invention can thus quickly and easily handled by a machine a durable connection of profile rubber sections 2a . 2 B attached to vehicle components 4 are attached, realized.

Depending on the quality of the profile rubber sections 2a . 2 B or the accuracy of application are between the cut surface 1a and the cut surface 1b despite the connection layer 3 on one of the two cutting surfaces 1a . 1b Columns available. In addition, it may happen that at least one of the profile rubber sections 2a . 2 B is deformed. For a reliable connection of the profile rubber sections 2a . 2 B become profile rubber sections 2a . 2 B brought into a matching cross-sectional shape and / or suitable for bonding cross-sectional shape. Furthermore, the second cut surface 1b and the first cut surface 1a before activating the connection layer 3 on the tie layer 3 moved and depending on the type of compound layer 3 also pressed.

Depending on the nature of the compound layer 3 occurs before pressing or moving towards each other of the profile rubber sections 2a . 2 B or the cut surfaces 1a . 1b the activation of the compound layer 3 since the activation reaction or the activation itself by those at the connecting layer 3 adjacent cut surfaces 1a . 1b can be adversely affected. Optionally, there is an increase in the distance between the cut surfaces 1a . 1b ,

The achievement of the cross-sectional shape and for moving the profile rubber sections 2a . 2 B or the cut surfaces 1a . 1b come gripping means are used, which on the one hand the respective contour of the profile rubber sections 2a . 2 B correspond and on the other hand, the profile rubber sections 2a . 2 B can grip reliably, for example, not or only minimally deformable areas, such as at the foot of a profile rubber section 5 ,

The compound layer 3 can also be on the cut surface of the second, so as a trailing profile rubber section 2 B as second cut surface 1b arrange, if or because before the first, so leading profile rubber section 2a with the cut surface 1a without compound layer 3 was provided and / or applied. After the second, so as a trailing profile rubber section 2 B so applied is that the first cut surface 1a and the second cut surface 1b or the profile rubber sections 2a . 2 B are congruent with each other and between the cut surface 1a . 1b the connection layer 3 is correctly arranged, which is controlled by means of a visual Schnittflächenerfassung or connection point detection, the activation of the connection layer takes place 3 by an energy input by means of heat or by means of an arc or adhesive tapes by a force input for the removal of the separating layer. Preferably takes place with the heat activatable compound layers 3 a melting or melting of an adhesive or a welding film, wherein the heat is introduced via a local heat input from the outside, for example by means of heat radiation or microwaves or from the inside, for example by means of RMS films.

The connecting layers 3 are built in layers or comprise several levels. Depending on the structure and materials used, the levels remain after activation of the connection layer 3 receive. However, it can also be done mixing, which is also desired depending on the application, a more reliable connection of the cut surfaces 1a . 1b to get. In particular in the case of RMS films, the reaction triggered by means of an arc results in consumption of the RMS film itself, so that the thermally activatable materials which may be present on both sides or on both sides are melted or fused or heated or at least melted or fused or heated or should be in that these materials at least partially intermix or connect and moreover with the cut surfaces 1a . 1b Reliably connect, regardless of whether a self-adhesive layer was previously available or was used.

LIST OF REFERENCE NUMBERS

1a

- first cut surface

1b

- second cut surface

2a, 2b

- Profile rubber sections

3

- foil-like connecting layer

4

- Carrier component, door, body part

5

- Foot of a profile rubber section

6

- Sealing profile of a profile rubber section

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1915270 B1 [0004]
• EP 3047963 A1 [0005]

Claims (16)

Method for the automated production of an abutting connection of profiled rubber sections (2a, 2b) by joining the abutting cut surfaces (1a, 1b) of the profiled rubber sections (2a, 2b) using a connecting layer (3), characterized in that a first cut surface (1a ) of the first profile rubber section (2a) an activatable connection layer (3) is applied or arranged, - that subsequently an application of the profile rubber section (2a) on a support member (4) and a second profile rubber section (2b) on the support member (4) is applied , wherein in this case the second cut surface (1b) of the second profile rubber section (2b) is aligned with the connection layer (3) and the first cut surface (1a) and that subsequently activation of the connection layer (3) takes place and thus the impact connection of the profile rubber sections (2a , 2b). Method for the automated production of an abutting connection of profiled rubber sections (2a, 2b) by joining the abutting cut surfaces (1a, 1b) of the profiled rubber sections (2a, 2b) using a connecting layer (3), characterized in that an application of a first profiled rubber section (2a ) on a support component (4) - subsequently applied to a second profile rubber section (2b) an activatable connection layer (3) or arranged and the second profile rubber section (2b) on the support member (4) is applied, in which case the connection layer (3) for the first cut surface (1a) is aligned opposite and - that then an activation of the connecting layer (3) takes place and thus the impact-side connection of the profile rubber sections (2a, 2b) is produced. Method according to Claim 1 or 2 , characterized in that the second profile rubber section (2b) in the manner on the support member (4) is applied, that the second cut surface (1b) to the connecting layer (3) on the first cut surface (1a) or the second cut surface (1b) Connecting layer (3) to the first cut surface (1a) is initially arranged spaced Method according to Claim 1 or 2 , characterized in that the second cut surface (1b) contacts the bonding layer (3) on the first cut surface (1a) or the first cut surface (1a) the bonding layer (3) on the second cut surface (1b) during activation. Method according to one of the preceding claims, characterized in that prior to the activation or with onset of activation or immediately after the activation of the connecting layer (3), the second cut surface (1b) and / or the first cut surface (1a) moves towards the connecting layer (3) and optionally pressed. Method according to one of the preceding claims, characterized in that the connecting layer (3) is formed in a film-like, film-like and / or plate-like manner. Method according to one of the preceding claims, characterized in that the connecting layer (3) comprises a plurality of planes, wherein the planes remain after the activation of the connecting layer (3) or at least partially mix. Method according to one of the preceding claims, characterized in that the connecting layer (3) is formed with a self-adhesive plane, with which it is applied to the first cut surface (1a) or second cut surface (1b). Method according to one of the preceding claims, characterized in that the connecting layer (3) is realized by a fluid application to the first cut surface (1a) or second cut surface (1b). Method according to one of the preceding claims, characterized in that the connecting layer (3) consists of a thermally activatable material and the activation of the connecting layer (3) by heating or by heat input by induction or thermal radiation or by means of an activated or activated to be integrated into the bonding layer known reactive multi-layer takes place. Method according to one of Claims 1 to 8th , characterized in that the connecting layer (3) is a double-sided adhesive tape, wherein the activation of the connecting layer (3) takes place by peeling off a protective film. Method according to one of the preceding claims, characterized in that for the activation of the connecting layer (3) the cut surfaces (1a, 1b) to be joined of the profile rubber sections (2a, 2b) are brought into a matching cross-sectional shape and / or for the bonding suitable cross-sectional shape. Method according to one of the preceding claims, characterized in that a visual Schnittflächenerfassung or Joint detection of the profile rubber sections (2 a, 2 b) and / or cut surfaces (1 a, 1 b) takes place. Connecting layer for carrying out a method according to one of Claims 1 to 13 characterized in that the connecting layer (3) covers the cut surfaces (1a, 1b) of the profile rubber sections (2a, 2b) to be joined and that at least one side of the connecting layer (3) comprises a plane which bonds and / or merges by activation. Connection layer after Claim 14 , characterized in that the connecting layer (3) comprises at least one thermally activatable plane. Connecting layer according to one of Claims 14 or 15 , characterized in that the connecting layer (3) comprises at least one plane consisting of a pressure-sensitive adhesive.

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