EP2990552B1 - Method for producing a sealing tape roll and sealing tape roll - Google Patents

Description

The present invention relates to a method for producing a sealing tape roll.

From sealing tape rolls unwound sealing tapes are commonly used for sealing joints, for example, between a frame profile of a window or a door and a building wall to seal the joints against draft and driving rain. Additionally provided films on a side surface of the sealing tape also increase the vapor impermeability of the same, see, for example EP 0 072 955 A1 or EP 1 936 246 A1 , However, films which are attached to the outside of the sealing tape, have the disadvantage that they can be damaged during transport or installation of the sealing tape.

Out DE 196 41 415 A1 a sealing strip roll is known which has at least one barrier layer extending in the radial direction, which is arranged between two layers of the foam and thus in the interior of the sealing strip roll. As a result, the barrier layer is better protected against damage. The barrier layer consists of adhesive or of a lamination material. To produce such a sealing tape, large-area barrier layers are formed on plates of an open-pore foam material by lamination or gluing. Multiple layers of foam boards and barrier layers form laminate blocks. These laminate blocks are separated into sheets orthogonal to the large-area barrier layers. The panels are then wound into wide rollers such that the barrier layers and the foam material are lined up on the circumference of the rollers in the axial direction. Such a wide roll is then separated between the individual barrier layers into slices to form several sealing tape rolls. This method requires many complex steps and the length of the sealing strips produced is limited by the size limitation of automatically machinable laminate blocks.

The EP 2 620 565 A1 discloses a sealing tape in which a barrier layer in the form of a film-like strip having a U- or V-shape is introduced into the sealing tape. For the production of the sealing tape, it is preferable to introduce a cut into a foam strip, to unfold the foam at this cut and to attach the film-like strip in the unfolded area.

The DE 20 2012 101 990 U1 describes another foam sealing tape in which a barrier layer can be attached to different portions of the sealing tape or introduced into an incision in the sealing tape. It discloses a method for producing a sealing tape roll having the features of the preamble of claim 1. The present invention has for its object to provide a method for producing a roll of a sealing tape having an inner, radially extending barrier layer, wherein the properties of the sealing tape are variably modifiable, and wherein the method is simple and reliable.

This object is solved by the features of claim 1.

• Bereitstellen mindestens eines ersten Schaumstoffstreifens aus weichem Schaumstoff, der an mindestens einer seiner Seitenflanken mit mindestens einer Sperrschicht versehen ist,
• Bereitstellen mindestens eines zweiten Schaumstoffstreifens aus weichem Schaumstoff,
• Zusammenführen des mindestens einen ersten Schaumstoffstreifens mit dem mindestens einen zweiten Schaumstoffstreifen derart, dass eine Schaumstoff-Sperrschicht-Bahn entsteht, bei der jede Sperrschicht zwischen aneinandergrenzenden Schaumstoffstreifen angeordnet ist;
• Aufbringen einer gemeinsamen Verbindungsschicht auf alle Schaumstoffstreifen der Schaumstoff-Sperrschicht-Bahn auf einer Fläche, die senkrecht zu jeder Sperrschicht verläuft; und
• Aufwickeln der Schaumstoff-Sperrschicht-Bahn zu einer Dichtbandrolle.

According to the invention, the process for producing a soft compressed foam tape roll having at least one radially extending barrier layer disposed axially between two layers of foam comprises the following steps in the order given:

• Providing at least one first soft foam foam strip provided with at least one barrier layer on at least one of its side flanks,
• Providing at least a second soft foam foam strip,
• Merging the at least one first foam strip with the at least one second foam strip to form a foam barrier sheet in which each barrier layer is disposed between adjacent foam strips;
• Applying a common tie layer to all foam strips of the foam barrier sheeting on a surface perpendicular to each barrier layer; and
• Winding the foam barrier sheet to a sealing tape roll.

In this way, a sealing tape roll made of soft, compressed foam with at least one extending in the radial direction barrier layer to increase the air and vapor impermeability can be produced relatively little effort. The barrier layer is protected by the recording between two foam strips from external damage during transport and installation of the sealing strip. In addition, the properties of the sealing tape particularly variable shaped, since foam strips of any design can be combined.

• Bereitstellen einer ersten Schaumstoffbahn aus einem weichen Schaumstoff;
• Aufbringen mindestens einer Sperrschicht auf mindestens die Oberseite oder die Unterseite der Schaumstoffbahn zur Erzeugung einer kaschierten Schaumstoffbahn; und
• Einbringen mindestens eines durchgängigen Schnitts in die kaschierte Schaumstoffbahn in einer Längsrichtung der kaschierten Schaumstoffbahn zur Erzeugung einer Mehrzahl von ersten Schaumstoffstreifen, die mit Sperrschichten versehen sind.

Auf diese Weise können mehrere erste Schaumstoffstreifen gleichzeitig und automatisiert hergestellt werden.The provision of the at least one first foam strip preferably comprises the following steps:

• Providing a first foam sheet of a soft foam;
• Applying at least one barrier layer to at least the top or the bottom of the foam sheet for producing a laminated foam sheet; and
• Introducing at least one continuous cut in the laminated foam sheet in a longitudinal direction of the laminated foam sheet to produce a plurality of first foam strips provided with barrier layers.

In this way, several first foam strips can be produced simultaneously and automatically.

• Bereitstellen einer ersten Rolle mit der aufgewickelten ersten Schaumstoffbahn; und
• Abwickeln der ersten Schaumstoffbahn von der ersten Rolle.

Auf diese Weise ist die erste Schaumstoffbahn vor der Behandlung einfach und platzsparend aufbewahrt und lässt sich leicht verarbeiten.The provision of the first foam web preferably comprises the following steps:

• Providing a first roll with the wound-up first foam sheet; and
• Unwinding the first foam sheet from the first roll.

In this way, the first foam sheet is kept simple and space saving before treatment and can be easily processed.

In one embodiment, the provided first foam sheet is impregnated. In this way, the sealing tape to be produced on a delayed reset.

• Tränken der kaschierten Schaumstoffbahn mit einem Imprägnat; und
• Trocknen der imprägnierten kaschierten Schaumstoffbahn.

Die Sperrschicht haftet in dem Fall, in dem das Tränken erst nach Aufbringung der Sperrschicht erfolgt, besonders sicher an dem Schaumstoff.In another embodiment, the provided first foam sheet is not impregnated, and the method for producing the sealing tape roll, following the step of applying the at least one barrier layer, comprises the following steps:

• Impregnating the laminated foam sheet with an impregnate; and
• Drying of the impregnated laminated foam sheet.

The barrier layer adheres particularly securely to the foam in the case in which the impregnation takes place only after application of the barrier layer.

The introduction of the at least one continuous cut into the laminated foam web is preferably carried out by means of at least one knife or at least one saw. These are particularly suitable for cutting through the foam web.

It is particularly preferred if the connecting layer is a double-sided adhesive tape which is laminated on its side facing away from the foam strip with a release liner. In this way, the first foam strip and the second foam strip can be connected to one another with particularly little effort and without additional connecting means. In addition, the double-sided adhesive strip can be used directly for attaching the sealing strip to a frame profile of the window.

A sealing tape roll produced by the method of the invention comprises a wound foam barrier sheet. The foam barrier sheet has at least one first soft foam foam strip provided with at least one barrier layer on at least one side and at least one second soft foam foam strip, each barrier layer disposed axially between adjacent foam strips and in the sealing tape roll in the radial direction. In this case, a common bonding layer is applied to all the foam strips of the foam barrier sheet on a surface perpendicular to each barrier layer, with the tie layer forming the only bond between the foam strips.

In this way, the properties of the sealing strip are particularly variable designable and the sealing tape is still easy to manufacture.

Preferably, precisely one first foam strip with exactly one second foam strip forms the foam barrier sheet, with precisely one barrier layer attached to the first foam strip. As a result, the production of the sealing tape roll is particularly inexpensive.

In an alternative embodiment, precisely one first foam strip with exactly two second foam strips forms the foam barrier sheet, with exactly two barrier layers attached to opposite sides of the first foam strip, and with the first foam strip disposed between the two second foam strips. In this way it is particularly easy to produce an increased sealing effect.

In a further alternative embodiment, a plurality of first foam strips having just one second foam strip form the foam barrier sheet with exactly one barrier layer attached to each first foam strip and the second foam strip disposed at an edge of the foam barrier sheet , In this way, sealing tapes can be made with any number of alternating foam strips and barrier layers.

It is particularly preferred if the connecting layer is a double-sided adhesive tape which is laminated on its side facing away from the foam strip with a release liner. The foam strips are thus particularly easily and safely connected. In addition, at the same time an adhesive layer for attachment of the sealing strip is provided on a window frame.

Preferably, the at least one first foam strip is impregnated. As a result, the sealing strip to be produced has a delayed return in this area.

It is particularly preferred if the at least one second foam strip is also impregnated and thus likewise has a delayed recovery.

In a particularly preferred embodiment, the at least one first foam strip is made of a different foam material than the at least one second foam strip. In this way, the properties of the sealing tape can be made very variable and easy to influence.

Likewise, the at least one first foam strip may have a different color than the at least one second foam strip. As a result, for example, the denser side of the sealing band can be identified, which generally faces the interior of the room, and thus the assembly can be simplified.

Fig. 1

zeigt beispielhaft den Ablauf der Herstellung von mit Sperrschichten versehenen ersten Schaumstoffstreifen als optionalen Teil des erfindungsgemäßen Verfahrens zur Herstellung einer Dichtbandrolle in schematischer Perspektivansicht;

Fig. 2

zeigt beispielhaft den Ablauf der Herstellung von zweiten Schaumstoffstreifen als optionalen Teil des erfindungsgemäßen Verfahrens in schematischer Perspektivansicht;

Fig. 3

zeigt den optionalen Schritt des Imprägnierens der kaschierten Schaumstoffbahn nach einem Ausführungsbeispiel des erfindungsgemäßen Verfahrens in schematischer Perspektivansicht;

Fig. 4

zeigt schematisch wesentliche Schritte bei einem Ausführungsbeispiel des erfindungsgemäßen Verfahrens zur Herstellung einer Dichtbandrolle in schematischer Perspektivansicht;

Fig. 5

zeigt eine Einbausituation einer Ausführungsform des Dichtbands, das nach dem erfindungsgemäßen Verfahren hergestellt wurde, in einer schematischen Querschnittsansicht;

Fig. 6

zeigt eine Einbausituation einer alternativen Ausführungsform des Dichtbands, das nach dem erfindungsgemäßen Verfahren hergestellt wurde, in einer schematischen Querschnittsansicht; und

Fig. 7

zeigt eine Einbausituation einer weiteren alternativen Ausführungsform des Dichtbands, das nach dem erfindungsgemäßen Verfahren hergestellt wurde, in einer schematischen Querschnittsansicht.

Further features and advantages of the present invention and a sealing tape produced by the method according to the invention will become apparent from the following description with reference to the drawings.

Fig. 1

shows by way of example the sequence of the production of barrier layers provided first foam strips as an optional part of the inventive method for producing a sealing strip roll in a schematic perspective view;

Fig. 2

shows by way of example the sequence of the production of second foam strips as an optional part of the method according to the invention in a schematic perspective view;

Fig. 3

shows the optional step of impregnating the laminated foam sheet according to an embodiment of the method according to the invention in a schematic perspective view;

Fig. 4

schematically shows essential steps in an embodiment of the inventive method for producing a sealing strip roll in a schematic perspective view;

Fig. 5

shows a mounting situation of an embodiment of the sealing tape, which has been produced by the method according to the invention, in a schematic cross-sectional view;

Fig. 6

shows a mounting situation of an alternative embodiment of the sealing tape, which was produced by the method according to the invention, in a schematic cross-sectional view; and

Fig. 7

shows a mounting situation of a further alternative embodiment of the sealing tape, which has been produced by the method according to the invention, in a schematic cross-sectional view.

In Fig. 1 are first optional steps of an embodiment of the method according to the invention shown. On a first roll 10, a soft foam in the form of a wound-up first foam sheet 20 is provided. The soft foam is provided on the first roll 10 in long lengths of up to 200 meters, preferably between 5 and 100 meters, more preferably between 10 and 60 meters. As foams, it is possible to use all known open-cell, mixed-cell or closed-cell flexible foams made of, for example, polyurethane, polyethylene, polyvinyl chloride or polypropylene used, which make a provision after compression. The first foam sheet 20 may already be impregnated before further processing, but is preferably not yet impregnated.

By providing on the first roller 5, the foam sheet 20 can be particularly well transported and processed. As a rule, the foam web 20 is located on the first roller 10 in an un-compressed or only slightly compressed state. It is also possible for the foam web 20 to be in a compressed state on the first roll 10, but then, after unwinding from the first roll 10, a timely recovery of the foam material in the process flow must be ensured. The width of the foam web 20 is usually between 1 cm and 5 m, preferably between 1.0 m and 1.5 m. The height of the foam web 20 in the relaxed state is usually between 5 and 150 mm, more preferably between 10 and 80 mm.

Alternatively, it is also possible to provide individual first foam sheets 20 which are not wound on a first roll 10, but which requires a larger supply space.

After unwinding from the first roller 10, the first foam sheet 20 is moved along a first conveying direction, which is indicated by the arrow V1. Subsequently, a barrier layer 30 is applied to the top 21 of the first foam sheet 20 so as to form a laminated foam sheet 34.

In the in Fig. 1 In the embodiment shown, the barrier layer 30 is formed by a film web which is provided on a film supply roll 26. The barrier layer 30 designed as a film web is preferably applied from above onto the upper side 21 of the foam web 20. This is usually done in the region of a connection unit, which is represented schematically by the roller 28. The bonding step typically includes generally a step of applying heat and / or a step of pressing the barrier layer 30 and the foam sheet 20 together. In the case of a film web, the connection to the foam web 20 in the connection unit preferably takes place by lamination.

The barrier layer 30 can also be formed by a web of a single-sided adhesive tape. The adhesive side of the adhesive tape is then usually provided with a peel-off film, which is peeled off shortly before application to the foam web 20. Likewise, the barrier layer 30 may be formed by a film web which itself comprises a layer of adhesive tape or a solid layer of a hotmelt adhesive. Finally, to form the barrier layer 30, an adhesive-like liquid medium may also be applied to the foam sheet 20 by means of nozzles (e.g., melt die, flat die, mixing die) or by roll coating (transfer roll). Depending on the adhesive may then, preferably in a connection unit, take place a connection with the foam sheet 20, wherein the adhesive is usually solidified. In principle, chemical and physical types of solidification come into question. Again, the connection of the barrier layer 30 to the foam sheet 20 will typically again include a step of applying heat and / or a step of pressing the barrier layer 30 and the foam sheet 20 together. It is also possible to apply a spray adhesive on one side of a film web and to use this combination as a barrier layer 30. Finally, as a barrier layer 30, a skin of the foam material of the first foam sheet 20 itself serve when the foam sheet 20 is melted on one side and then re-hardened or if the foam sheet 20 due to production has a skin.

Each heat application step above is carried out by means of a heating device, which is usually designed as a hot air blower. But it is also radiant heating in question, for example by means of an infrared heater or microwave heating.

The function of the barrier layer 30 is preferably to reduce or prevent the passage of air and / or water vapor. This also applies to all subsequent embodiments.

In alternative embodiments, the barrier layer 30 may also be attached to the underside 22 of the foam sheet 20 from below. Another embodiment provides for the application of barrier layers 30 on top 21 and bottom 22 of foam sheet 20.

Finally, it is also possible for a foam sheet 34, which has already been produced with a barrier layer 30, to be wound up to form the first roll 10.

By means of at least one blade 38, preferably a plurality of parallel blades 38, at least one continuous cut 40, preferably several parallel continuous cuts 40, in the laminated foam sheet 34 in the longitudinal direction of the laminated foam sheet 34, preferably parallel to the longitudinal edges 23 of the laminated foam sheet 34 is introduced , The longitudinal edges 23 are the edges of the laminated foam sheet 34, which are parallel to the conveying direction V1 and orthogonal to the axial direction of the first roller 10. In order to introduce the at least one continuous cut 40 into the foam web 20, apart from the knives 38, all other methods known to those skilled in the art for cutting through foam webs 20 can be used, such as saw cutting, heated wires, laser cutting or water jet cutting.

The continuous cuts 40 create a plurality of first foam strips 50 provided with a barrier layer 30. The first foam strips 50 produced by the at least one cut 40 may have a different width, but they are preferably the same width. The width of a foam strip 50 is between 5 mm and 30 cm, preferably between 1 and 12 cm. The first foam strips 50 may be wound onto a supply roll (not shown) at this point to enable them to be further processed, thus shortening the length of the entire production line, or may be fed directly to further processing. Overall, the number of successive steps in a production line can be varied by the use of supply rolls as a buffer, and thus the length of the individual sections of the production line can be adjusted according to the prevailing space conditions.

It is also conceivable that the first foam sheet 20 is first cut into foam strips 50 and the individual foam strips 50 are then equipped with the barrier layers 30. In this case, the barrier layers 30 may also extend only over part of a side surface of the foam strips 50. Also, in this case, a film could be used as a barrier layer 30, which adheres only selectively to the foam strip 50 and thus in the compressed state of the sealing tape an expansion reserve, for example in the form of a loop has. Likewise, a barrier layer 30, for example in the form of a film, may be arranged over a plurality of side surfaces.

In Fig. 2 an example of the optional process of making the second foam strips 60 is shown. For this purpose, a second foam web 58 made of soft foam on a second roller 55 is preferably provided uncompressed. After unwinding from the second roller 55, the second foam web 58 is moved along a second conveying direction V2. The same applies to the type of foam as to the foam of the first foam web 20.

By means of at least one blade 56, preferably a plurality of parallel blades 56, at least one continuous cut 59, preferably several parallel continuous cuts 59, is introduced into the second foam web 58 in a direction parallel to the longitudinal edges of the foam web 58. The at least one continuous cut 59 thus generates a plurality of second foam strips 60. Again, in addition to the blades 56, all other methods known to those skilled in the art for cutting foam webs can be used, for example cutting through sawing, heated wires, laser cutting or water jet cutting. Likewise, it is also possible to provide the second foam web 58 without winding to a second roller 55. The second foam strips 60 can be wound up at this point into a supply roll (not shown) or fed directly to further processing. Finally, the second foam strips 60 may also be provided individually. Additionally, the second foam strips 60, as well as the first foam strips 50, may be provided with at least one barrier layer 30.

Fig. 3 shows the optional step of impregnating the laminated foam sheet 34 or the first foam strips 50. Impregnation occurs either prior to the step of introducing the at least one cut 40 into the laminated foam sheet 34, or as shown in FIG Fig. 3 shown after the introduction of the at least one continuous section 40 in the laminated foam sheet 34. In the latter case, it is advantageous if the first foam strips 50 are guided in parallel and simultaneously impregnated.

Theoretically, the impregnation can also take place before the application of the at least one barrier layer 30 to the foam web 20. Due to the poorer adhesion of the barrier layer 30 on an impregnated foam web 20 and thus difficult connecting the barrier layer 30 with the foam sheet 20, however, the impregnation after the application of the barrier layer 30 is preferable.

In the example of Fig. 3 The first foam strips 50 are guided side by side through an impregnation unit 90. At least two rollers 91 guide the foam strips 50 into a bath of a suitable impregnate 94 and the foam absorbs itself completely with the impregnate. Conventional impregnates and methods for impregnating foams are known to the person skilled in the art. Preferably, the foam strips 50 are compressed between the rollers 91 to promote the absorption of the impregnate 94 by the subsequent recovery of the foam. After impregnation in the impregnation unit 90, excess impregnate is preferably squeezed out by means of rollers. In each case, the impregnated foam strips 50 are then dried in a drying unit 100. In this, the impregnated foam strips 50 are dried in a known manner, for example by a fan heater or radiant heater. Also at this point the subsequent winding on a supply roll or the continuous feed for further processing is possible.

The optional impregnation of the second foam sheet 58 or the second foam strips 60 comprises the same steps.

Fig. 4 shows essential steps of an embodiment of the manufacturing method according to the invention, which is based on the steps Fig. 1 . 2 or 3 can connect. In principle, it is possible in all of the exemplary embodiments of the invention described below that the first foam strips 50 provided with at least one barrier layer 30 have already been prefabricated beforehand, for example at another location or by another manufacturer, and within the scope of the inventive method only in this finished form be used. The same applies to the second foam strips 60.

In the in Fig. 4 illustrated embodiment, a first foam strip 50 and a second foam strip 60 made of soft foam so loosely combined a foam barrier sheeting 70 is formed in which the barrier layer 30 is disposed between the adjoining foam strips 50,60. The foam strip 50 is preferably rotated by 90 degrees about its longitudinal axis by means of a suitable deflection device, the longitudinal axis extending along a fourth conveying direction V4. As a result of this rotation, the barrier layer 30 is subsequently located on a side surface of the foam strip 50 facing the foam strip 60. At the latest from the combination, the first foam strip 50 and the second foam strand 60 are moved together in the conveying direction V4, but are still separated from one another. Also, multiple first foam strips 50 may be combined with one or more second foam strips 60, or multiple second foam strips 60 with one or more first foam strips 50. The at least one first foam strip 50 may also be provided such that no rotation of the first foam strip 50 is necessary is. Likewise, the at least one second foam strip 60 may be provided such that no rotation of the first foam strip 50 is necessary. It is always important that each provided with a barrier layer 30 side surface of the first foam strip 50 to the adjacent foam strip 50, 60 faces.

After joining the at least one first foam strip 50 to the at least one second foam strip 60 to form a foam barrier sheeting 70, a common tie layer 80 is applied to all of the foam strips 50, 60 of the foam barrier sheeting 70. The application of the common bonding layer 80 occurs on a surface of the foam barrier sheeting 70 which is perpendicular to the at least one barrier layer 30. The bonding layer 80 is the only strong bond between the foam strips 50, 60 of the foam barrier sheeting 70.

Preferably, the tie layer 80 is provided on a supply roll 76 and is applied to the foam barrier sheeting 70 in the region of an application station, here shown schematically by the roll 78, where it is preferably pressed or rolled down. Particularly suitable is the use of double-sided adhesive tape as a bonding layer 80. This has the advantage that it is easy to apply to the foam barrier layer web 70 and thus at the same time an adhesive surface on the side facing the foam barrier sheeting 70 is provided by means of that's it Sealing tape 2 can be connected during assembly with a frame profile of a window. This second adhesive surface of the double-sided adhesive tape on the side facing away from the foam barrier layer web 70 is first laminated with a release liner 81 in order to prevent sticking during further processing. Besides the use of double-sided adhesive tape as the bonding layer 80, it is also possible to use textile fabrics, non-woven fabric layers or other tie-layers which are suitable for joining a plurality of foam strips. In this case, the connection of the bonding layer 80 to the foam strips 50, 60 preferably takes place by gluing or lamination.

After applying the common bonding layer 80 to all foam strips 50, 60 of the foam barrier sheeting 70, this is compressed to a sealing tape roll 1 wound. For example, one or more pairs of compression rollers 84 may be used for the compression. Alternatively or additionally, a compression roller (not shown) can interact directly with the sealing tape roll when the sealing tape 2 is wound onto the sealing tape roll 1.

Also, in all embodiments, two tie layers 80 may be applied to opposite sides of the foam barrier sheeting 70.

In an alternative embodiment, a foam barrier sheeting 70 is wound from a plurality of foam strips 50, 60 and barrier layers 30 after applying a common tie layer 80 compressed to a wide roll (not shown) that is then joined by at least one knife or at least one knife Saw can be cut to sealing tape rolls 1 desired width.

Depending on the arrangement of the sections of the production line, the conveying directions V1, V2, V3 and V4 can be identical or different from each other.

In addition to the tensile forces of downstream winding, all foam sheets, foam strips or foam barrier sheets are preferably advanced by rolling, more preferably by pairs of counter-rotating rolls. Also treadmills can be used. Such means of locomotion can also be used for the film web or adhesive tape web.

Fig. 5 shows an installation situation of a sealing tape roll 1 according to Fig. 4 unwound sealing strips 2. For installation, the sealing strip 2 is first unwind from the sealing strip roll 1 and cut into strips of any length. Usually, the length of the sealing strip strip is adapted to the outer contours of a sealed window frame or a door frame. The sealing tape 2 is then preferably fastened to the window frame 112 or door frame by means of the double-sided adhesive tape acting as a bonding layer 80 or by means of other adhesive layers, adhesive tapes or other suitable means. When using a double-sided adhesive tape as connecting layer 80, therefore, only the peel-off film 81, with which the double-sided adhesive tape is laminated on its side facing away from the foam strip 50, 60, must be removed before the sealing tape 2 can be attached directly to the window frame 112.

In the in Fig. 5 Pictured installation situation, the sealing tape 2 is received between a window frame 112 and masonry 110 to seal the gap between them. The illustrated sealing tape 2 in this case comprises a first foam strip 50 provided with a barrier layer 30 and a second foam strip 60. The barrier layer 30 is protectively received between the foam strips 50, 60, thereby preventing damage during storage, transportation and storage Assembly of the sealing tape roll 1 and the sealing strip 2 are avoided.

The sealing strip 2 is to be installed so that at least one barrier layer 30 extends from the window frame 112 to the masonry 110 and thus substantially orthogonal to a functional direction F of the sealing tape 2. The functional direction F extends parallel to the surfaces of the window frame 112 and the masonry 110 forming the joint to be sealed from a room outside (in FIG Fig. 5 left) to a room inside (in Fig. 5 right). In this way, a reliable seal against draft and vapor diffusion can be ensured.

For further shaping of the sealing properties of the sealing strip 2, the first foam strip 50 may be made of a different foam material than the second foam strip 60. Likewise, the first foam strips 50 and the second foam strips 60 may be impregnated with different impregnate or only the first foam strips 50 or only the first second foam strip 60 impregnated be. In a further embodiment, the first foam strips 50 may have a different color than the second foam strips 60. As a result, for example, a marking of the preferred installation direction of the sealing tape 2 can be made.

In principle, any number of barrier layers 30 in the sealing tape 2 is possible. Likewise, different widths and / or heights of the first foam strips 50 and / or different widths and / or heights of the second foam strips 60 are conceivable, even within the same sealing strip 2. Within a sealing strip 2, the first or the first foam strips 50 can also have a different width and / or or height than the second foam strip or strips 60. The width of the sealing strip 2 is usually between 5 mm and 20 cm, preferably between 1 cm and 12 cm. In the relaxed state, the sealing tape 2 usually has a height of between 5 mm and 30 cm, preferably between 1 and 12 cm.

In the in Fig. 5 illustrated embodiment forms exactly a first foam strip 50 together with just a second foam strip 60, the foam barrier layer web 70 which is wound into the sealing strip roll 1. In addition, there are many other possibilities of constructing a preferred sealing tape 2.

Another embodiment is in Fig. 6 shown. In this case, exactly one first foam strip 50 is brought together with exactly two second foam strips 60 to form the foam barrier web 70, the first foam strip 50 in this case having two barrier layers 30 arranged on opposite sides of the first foam strip 50. The first foam strip 50 is disposed between the two second foam strips 60 such that the barrier layers 30 are each disposed between the first foam strip 50 and one of the second foam strips 60. In producing this variant, the first foam web 20 (FIG. Fig. 1 ) on top 21 and bottom 22 are provided with a barrier layer 30, and then the three foam strips 50, 60 are brought together and bonded together via tie layer 80, similar to FIG Fig. 4 shown.

In a further alternative embodiment according to Fig. 7 is a plurality of first foam strips 50, here three first foam strips 50, with exactly one second Foam tabs 60 are joined together to form the foam barrier sheeting 70, with just one barrier layer 30 attached to each first foam strip 50 and with the second foam tab 60 disposed at one edge of the foam barrier sheeting 70. Again, the barrier layers 30 are disposed between adjacent foam strips 50, 60. In producing this variant, the first foam web 20 (FIG. Fig. 1 ) are provided with a barrier layer 30 only on the upper side 21 or the lower side 22, and then the three first foam strips 50 are brought together in a respective 90 ° rotated orientation with the one second foam strip 60 and interconnected via the tie layer 80, similar to FIG Fig. 4 shown.

It is also possible that two barrier layers of two adjacent foam strips 50, 50 or 50, 60 are arranged directly next to each other.

In principle, in this way foam barrier sheets 70 of any shape can be designed with foam strips 50, 60 and barrier layers 30 preferably alternating in a direction perpendicular to the direction of conveyance V4 and a respective foam strip 50, 60 at one edge of the foam barrier sheet 70 is arranged.

Since the connecting layer 80 forms the only connection between the foam strips 50, 60 in the sealing strip 2 and is usually designed as limp, the connecting layer 80 and thus also the sealing strip 2 can be bent at the transition point between individual foam strips 50, 60, which also makes other use variants allows, for example a simultaneous sealing of two joints that abut each other vertically.

In addition, between one or all of the foam strips 50, 60 of the sealing tape 2 there may be a small or large gap that is bridged only by the bonding layer 80. Thus, sealing strips 2 can be realized for relatively wide joints, which require only relatively little material.

In the context of this application, a "barrier layer" 30 is a layer which is suitable for reducing the passage of air or vapor diffusion through the sealing strip 2. A complete blockage against passage of air or over Vapor diffusion is possible, but not necessarily necessary. It may be expedient if at least one barrier layer 30 is moisture-variable in such a way that it is more diffusion-tight at high air humidity than at lower atmospheric humidity or vice versa. With regard to the usable materials for the barrier layer, for example DE 10 2010 055 788 A1 or on EP 2 733 271 A1 directed. Of particular importance in addition to the properties of reducing or preventing vapor diffusion, that each barrier layer 30 is permanently elastic, so that it remains permanently elastic even after storage of the sealing strip roll 1 in the compressed state in the return of the sealing strip 2 and in the installed state of the sealing strip 2 in a joint always tight against the joint flanks.

Claims (7)

1. Method for producing a sealing tape roll (1) consisting of soft, compressed foam having at least one barrier layer (30) which extends in the radial direction and which is arranged axially between two layers of foam, wherein the method is characterized by the following steps in the order specified:

   - providing at least one first foam strip (50) consisting of soft foam which is provided with at least one barrier layer (30) on at least one of its lateral flanks,

   - providing at least one second foam strip (60) consisting of soft foam,

   - combining the at least one first foam strip (50) with the at least one second foam strip (60) in such a way that a foam-barrier layer web (70) results in which the at least one barrier layer (30) is arranged between foam strips (50, 60) which are adjacent to one another;

   - applying a common connecting layer (80) to all the foam strips (50, 60) of the foam-barrier layer web (70) on a surface which extends perpendicularly to the at least one barrier layer (30); and

   - winding up the foam-barrier layer web (70) to form a sealing tape roll (1).
2. Method according to claim 1, characterized in that the provision of the at least one first foam strip (50) comprises the following steps:

   - providing a first foam web (20) consisting of a soft foam;

   - applying at least one barrier layer (30) to at least the upper side (21) or the underside (22) of the foam web (20) to produce a laminated foam web (34); and

   - making at least one continuous cut (40) in the laminated foam web (34) in a longitudinal direction of the laminated foam web (34) to produce a plurality of first foam strips (50) which are provided with barrier layers (30).
3. Method according to Claim 2, characterized in that the provision of the first foam web (20) comprises the following steps:

   - providing a first roll (10) having the wound-up first foam web (20); and

   - unwinding the first foam web (20) from the first roll (10).
4. Method according to Claim 2 or 3, characterized in that the first foam web (20) provided is impregnated.
5. Method according to Claim 2 or 3, characterized in that the first foam web (20) provided is not impregnated, and the method comprises the following steps after the step of applying the at least one barrier layer (30):

   - impregnating the laminated foam web (34) with an impregnating substance (94); and

   - drying the impregnated laminated foam web (34).
6. Method according to one of Claims 2 to 5, characterized in that the at least one continuous cut (40) is made in the laminated foam web (34) by means of at least one knife (38) or at least one saw.
7. Method according to one of the preceding claims, characterized in that the connecting layer (80) is a double-sided adhesive tape which is laminated on its side facing away from the foam strips (50, 60) with a peel-off film.

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