Sealing tape roll

Abstract

The sealing tape roll (2) comprises a sealing tape (3) wound in radially successive turns (5) in a compressed state, which can be separated from one another by unwinding. The sealing tape (3) comprises at least one base body (4) made of a resilient soft foam material after compression and at least one barrier layer (18) for reducing water vapor diffusion and / or air permeability in the functional direction (F). In a fully expanded state of the sealing tape (3), the at least one barrier layer (18) runs substantially straight from the top (6) towards the bottom (8), but not along the top (6), whereas in the compressed state of the sealing tape (3) in the sealing tape roll, it has a curved or angled shape at least in an upper region.

Description

[0001] The present invention relates to a sealing tape roll.

[0002] Sealing tapes unwound from rolls are typically used to seal joints, for example between the frame profile of a window or door and a building wall, to protect against drafts and driving rain. Additional foils applied to one side of the sealing tape further reduce its vapor permeability; see, for example, EP 0 072 955 A1 or EP 1 936 246 A1.

[0003] From DE 196 41 415 A1, a sealing tape roll is known which has at least one radially extending barrier layer arranged between two layers of foam and thus inside the sealing tape roll. The barrier layer consists of adhesive or a laminating material.

[0004] From EP 2 990 551 A1, another sealing tape roll with an internal, radially extending barrier layer is known. Furthermore, a simple and reliable method for its manufacture is described, which can also be used to produce sealing tape rolls of considerable length.

[0005] The present invention is based on the objective of providing a sealing tape roll with a sealing tape which, in the installed state, ensures a particularly reliable seal on the contact surface towards the masonry, and which can be manufactured with relatively little effort.

[0006] According to the invention, the sealing tape roll comprises at least one base body made of a resilient soft foam material, wound in radially successive turns in a compressed state and releasable by unwinding. The sealing tape has a bottom surface, a top surface, and first and second side faces connecting the top and bottom surfaces. The end faces of the sealing tape roll are formed by the side faces and extend substantially perpendicular to a functional direction of the sealing tape. An adhesive layer is arranged on the bottom surface for adhesion to a component, in particular a frame profile of a window or door.The sealing tape has at least one barrier layer for reducing water vapor diffusion and / or air permeability in the functional direction, wherein, in a fully expanded state of the sealing tape, the at least one barrier layer runs substantially in a straight line from the top towards the bottom, but not along the top. In the compressed state of the sealing tape in the roll, the at least one barrier layer has a curved or angled shape at least in an upper region.

[0007] This design creates a sealing tape that is easy to manufacture and, in its partially compressed installed state, ensures a particularly secure installation of at least one barrier layer on the masonry.

[0008] Preferably, the at least one barrier layer extends over the entire height of the base body when the sealing tape is fully expanded. This optimizes the sealing function of the sealing tape.

[0009] The at least one barrier layer, in the compressed state of the sealing tape within the tape roll, preferably extends section by section substantially transversely to the functional direction, more preferably radially, and the at least one barrier layer, in the compressed state of the sealing tape within the tape roll, preferably also extends section by section between the base bodies of adjacent coils. In this way, an angular arrangement of the barrier layer is achieved, which is maintained for a certain period of time even during the expansion of the sealing tape after unwinding from the tape roll and ensures a particularly secure bond of the barrier layer to the masonry during installation.

[0010] Preferably, the at least one barrier layer substantially covers the first side of the sealing tape both in the compressed state of the sealing tape in the tape roll and in the fully expanded state of the sealing tape. This reduces the passage of water vapor and / or air on one side of the sealing tape.

[0011] Preferably, a lower end section of the at least one barrier layer is folded inwards on the underside so that it is located inside the sealing tape roll when the tape is compressed. This folded lower end section remains folded inwards even when the sealing tape is fully expanded and is permanently bonded to the base material. This optimizes the sealing performance of the tape on its underside.

[0012] In a preferred embodiment, an upper end section of the at least one barrier layer is permanently attached to an upper end region of the first side flank in the fully expanded state of the sealing tape.

[0013] In a further preferred embodiment, the at least one barrier layer runs inside the sealing tape roll and is axially surrounded by two interconnected sections of the base body or by two separate base bodies.

[0014] In this case, it is preferred if the at least one barrier layer inside the sealing tape roll is permanently attached to at least one, preferably exactly one, of the two interconnected sections of the base body or to at least one, preferably exactly one, of the two base bodies.

[0015] In preferred embodiments, the at least one barrier layer is formed from a film-like material and / or an adhesive, in particular from a film web, a film strip, a strip of adhesive tape or a cured adhesive-like liquid medium.

[0016] The at least one barrier layer preferably has a thickness of 1 µm to 5 mm, more preferably of 10 µm to 3 mm, and particularly preferably of 50 µm to 2 mm. If two or more barrier layers are present, they can be of the same thickness or of different thicknesses.

[0017] The air permeability of the at least one barrier layer is preferably less than 50 I / (m 2< s), more preferably less than 20 I / (m 2< s), and particularly preferably less than 10 I / (m 2< s), as measured according to DIN EN ISO 9237:1995.

[0018] A method for manufacturing a sealing tape roll according to the invention comprises the following steps: Providing a foam barrier sheet comprising at least one soft, compression-recoverable foam body and at least one barrier layer, wherein the foam barrier sheet has a top, a bottom and two side flanks connecting the top and the bottom, wherein a transverse direction of the foam barrier sheet runs parallel to the bottom of the foam barrier sheet from one side flank to the other, and wherein a longitudinal direction of the foam barrier sheet is oriented parallel to the bottom of the foam barrier sheet and perpendicular to the transverse direction, and wherein the at least one barrier layer extends substantially in a straight line only from the top of the foam barrier sheet towards the bottom of the foam barrier sheet, but does not extend on the top of the foam barrier sheet;Selective compression of at least one predetermined section of the foam barrier sheet, thereby deforming the at least one barrier sheet such that it has a curved or angled shape at least in an upper region; additional compression of the entire foam barrier sheet during or after the selective compression, while maintaining the curved or angled shape of the at least one barrier sheet achieved during the selective compression; and forming a sealing tape roll by (i) winding the foam barrier sheet in the compressed state around an axis of rotation to form the sealing tape roll; or (ii) winding the foam barrier sheet in the compressed state around an axis of rotation to form an intermediate roll and cutting the intermediate roll at one or more points in an axial direction to produce a plurality of sealing tape rolls that are narrower than the intermediate roll;or (iii) cutting the compressed foam barrier sheet longitudinally to form compressed foam barrier strips and winding the compressed foam barrier strips around an axis of rotation to form individual sealing tape rolls.

[0019] In this way, it is possible to produce a sealing tape roll with relatively little equipment effort, whose sealing tape ensures a particularly tight seal of the barrier layer against the masonry even in the partially compressed installation state.

[0020] Preferably, the at least one barrier layer extends over the entire height of the foam barrier layer in the fully expanded state.

[0021] In one embodiment, a functional direction of the sealing tape wound onto the sealing tape roll extends from one end face to the other end face of the sealing tape roll, and the at least one barrier layer, in the compressed state of the sealing tape in the sealing tape roll, preferably extends section by section substantially transversely to the functional direction, more preferably radially, and the at least one barrier layer, in the compressed state of the sealing tape in the sealing tape roll, additionally extends section by section between base bodies of adjacent windings.

[0022] In a preferred embodiment, the at least one barrier layer covers a side flank of the foam barrier sheet, and the targeted compression comprises deforming the side flank of the foam barrier sheet such that an upper end section of the at least one barrier layer, which was previously arranged in the region of the side flank, is bent inwards and thus also extends in the transverse direction of the foam barrier sheet. The transverse extension is greater than 5 mm. In this way, the lateral bending of an upper section of the barrier layer arranged on the side flank is achieved using simple means.

[0023] In one embodiment, the at least one barrier layer is arranged inside the foam barrier membrane between two foam bodies, and the targeted compression comprises deforming the foam barrier membrane such that an upper end section of the at least one barrier layer, which was previously arranged between the top and bottom of the foam barrier membrane, is bent laterally, thus also extending in the transverse direction of the foam barrier membrane. This transverse extension is greater than 5 mm. In this way, the lateral bending of an upper section of the barrier layer arranged inside the sealing tape is achieved using simple means.

[0024] The lateral bending of the at least one barrier layer is particularly successful when an area of ​​a foam body is selectively compressed which is arranged laterally to the at least one barrier layer, wherein the area is preferably arranged within 3 mm to 3 cm next to the barrier layer.

[0025] It is preferred that the targeted compression includes the step of pressing in at least the top surface of the foam barrier layer membrane at specific points using at least one compression element.

[0026] In preferred embodiments, the at least one compression element is designed as a compression plunger or a compression wheel. Alternatively, two opposing compression elements, for example two compression wheels, can selectively press into the top and bottom surfaces of the foam barrier layer. This preferably creates a C-shape of the barrier layer in the selectively compressed state.

[0027] The compression plunger or compression wheel preferably has a width in the transverse direction of the foam barrier layer of between 0.5 mm and 20 mm, more preferably between 1 mm and 10 mm, and particularly preferably between 1 mm and 7 mm.

[0028] In a further embodiment, the targeted compression preferably comprises the step of deforming an outer edge section of the foam barrier layer membrane by means of a forming device, preferably a forming shoulder, which exerts a direct force on the side flank.

[0029] The forming shoulder preferably has a forming surface that is C-shaped in cross-section or is designed as a partial section of a C-shape.

[0030] In all variants, the foam barrier layer is preferably moved longitudinally during targeted compression. This ensures a continuous machine process.

[0031] In all variants, it is preferred to apply an adhesive layer to the underside of the foam barrier membrane or foam barrier strips in an additional step. During installation, this serves to attach the membrane to a component, particularly a window or door frame profile, and is usually also covered with a removable release film or paper.

[0032] It is preferred to apply the adhesive layer after targeted compression or compression in the area of ​​the underside of the foam barrier sheet or foam barrier strips.

[0033] Each of the basic bodies or foam strips described herein can be made from any open-cell or mixed-cell flexible foam, for example polyurethane, and can be impregnated for delayed recovery after compression. The density of such flexible foams ranges from 20 to 200 kg / m³.

[0034] Preferably, the soft foam has a compression hardness of more than 2 kPa. Preferably, the compression hardness is more than 2.1 kPa, more preferably more than 2.2 kPa, and particularly preferably more than 2.3 kPa. The compression hardness is preferably less than 4 kPa, more preferably less than 3.8 kPa, and more preferably less than 3.6 kPa. Compression hardness is a measure of the foam's strength. The values ​​given here are based on a compression of 40% of the original height. The compression hardness is determined according to DIN EN ISO 3386:2015, and the CV40 value is specified.

[0035] The base material or foam strips are preferably at least partially, and more preferably completely, impregnated with an impregnating agent to delay expansion. The impregnating agent preferably comprises an acrylate dispersion. In an advantageous embodiment, the acrylate dispersion comprises acrylate polymer particles dispersed in a homogeneous phase. Particularly preferably, the foam is impregnated with a weight fraction of acrylate dispersion for delayed expansion such that the sealing tape, at 20°C and 50% relative humidity, expands to approximately 9% to 13% of its maximum dimension up to the point of joint closure within less than 24 hours.

[0036] Preferably, each provided foam barrier sheet has previously undergone the steps of impregnation of the foam with an aqueous polyacrylate dispersion and subsequent drying.

[0037] Preferably, a foam core or foam strip impregnated for delayed recovery exhibits an air permeability in the range of 50 to 1,000 I / (m²s), more preferably between 60 and 600 I / (m²s), and particularly preferably between 80 and 400 I / (m²s). The air permeability data provided in this application refer to a determination under standard conditions of a 10 mm thick piece of foam (fully relaxed) at a test vacuum of 1.0 bar, test area 100 cm²s; Frank device 21443; DIN EN ISO 9237:1995.

[0038] Each of the barrier layers described herein can be formed from a film-like material, e.g. a polyamide film, or from an adhesive, e.g. a dispersion adhesive, in particular an acrylate adhesive.

[0039] In a particularly preferred embodiment, the at least one barrier layer or a barrier layer consisting of several barrier layers is designed to be humidity-variable, i.e., its water vapor diffusion resistance changes depending on the humidity of the environment surrounding the barrier layer. The characteristic feature of the water vapor diffusion resistance is the water vapor diffusion value per unit air layer thickness in meters, the so-called sD value.

[0040] Preferably, a barrier layer has an sD value of 0.05 m to 100 m, more preferably 0.1 m to 25 m or 0.2 m to 15 m (at 25% relative humidity). The sD value is tested according to DIN EN ISO 12572:2001. Independently of this, or in combination with it, the barrier layer can have an sD value of 0.02 m to 10 m, 0.03 m to 6 m, or 0.05 m to 2 m at 72.5% relative humidity, according to DIN EN ISO 12572:2001. For example, the sD value can be in the range of 1 to 10 m at 25% relative humidity and in the range of 0.1 to 5 m at 72.5% relative humidity. Unless otherwise specified in DIN EN ISO 12572:2001, the sD values ​​refer to a temperature of 20°C.

[0041] The sD value of a barrier layer at 25% relative humidity on the one hand and at 72.5% relative humidity on the other (both at 20°C) preferably differs by a factor of ≥ 1.1–1.2, more preferably ≥ 1.5–2, optionally up to a factor of 3 to 5, or up to 10 to 20, or even up to 50, or up to 100, or 150, or beyond, thereby defining the dependence of the water vapor diffusion of the barrier layer on the relative humidity. The difference between the two sD values ​​of the barrier layer at the two specified relative humidity levels can be ≥ 0.25 m, or ≥ 0.5 m, or preferably ≥ 0.75–1 m, for example up to 5–10 m, or up to 20–25 m, or beyond.This results in a sufficient dependence of the water vapor diffusion resistance under different environmental conditions, for example in summer or winter or in different climate zones, to achieve adequate adaptation of the water vapor diffusion resistance to the environmental conditions even with varying relative humidity. The sD value at 25% relative humidity is preferably always higher than the value at 72.5% relative humidity.

[0042] Preferably, the barrier layer consists at least partially of a synthetic, water-swellable polymer.

[0043] The at least one barrier layer can also be multi-layered, in particular as a multi-layered composite layer. At least one layer of at least one further material can be arranged on one or both sides of the functional layer. The one or both further layers, which partially or completely cover the functional layer, can protect and support it and increase the stability of the barrier layer. The individual layers can each consist of the same or different materials.

[0044] The layers arranged on one or both sides can be, in particular, nonwovens, woven fabrics, or grids made of inert materials such as polyethylene, polypropylene, polyester, glass fibers, or viscose, optionally also perforated films, especially those made of polyethylene, polypropylene, or polyester. The layers can generally consist of any suitable material in layered form, preferably with a sD value not higher than that of the functional layer. The layers arranged on one or both sides can consist of a dispersion adhesive, in particular an acrylate adhesive.

[0045] The at least one barrier layer generally forms, within the scope of the invention, a continuous, non-porous, and non-perforated layer; it is particularly preferably at least substantially airtight. The air permeability of the barrier layer can be ≤ 3-6 I / (m²s) or preferably ≤ 1-2 I / (m²s) or ≤ 0.2-0.5 I / (m²s) or particularly preferably ≤ 0.1-0.3 I / (m²s) according to DIN EN ISO 9237:1995, test area 100 cm²s at a measuring pressure (vacuum) of 1.0 mbar, test device Frank 21443, or it can be unmeasurable.

[0046] The air permeability of a sealing tape section is generally determined by the overall reduction of airflow in one direction across the entire cross-section of the sealing tape section. For example, if multiple barrier layers and base bodies are arranged alternately one behind the other in the functional direction of the sealing tape, the reduction of airflow through all these barrier layers and base bodies must be taken into account.

[0047] The air permeability of the entire sealing tape in the functional direction is preferably less than 50 I / (m 2< s), more preferably less than 30 I / (m 2< s), in all embodiments, under the measurement conditions specified above.

[0048] In one embodiment, the sealing tape or sealing tape roll further comprises an additive material that is applied to a surface of the sealing tape or to the at least one barrier layer, or is contained in the impregnating agent. The additive material can impart special properties to the sealing tape. Suitable additive materials include, in particular, materials for fire protection (e.g., expandable graphite, non-combustible solids, CO₂ emitters, etc.), materials for insulation (e.g., PU foam, resins, sealants, etc.), materials for sealing against moisture (e.g., hydrophobic or hydrophilic substances, substances that swell upon contact with water, etc.), materials for sound insulation, materials for controlled ventilation (e.g., catalysts, etc.), materials for hygiene (e.g., disinfectants, etc.), and / or materials for triggering the expansion of the sealing tape (e.g., blowing agents, heat sources, etc.).To the expert, alternatives are apparent here with regard to the arrangement as well as the type and properties of the additional material, which can be used to meet the respective requirements.

[0049] If several adjacent base bodies or foam strips are formed, they preferably consist of the same material. Alternatively, the base bodies or foam strips can be made of different materials.

[0050] If multiple barrier layers are present, they can preferably be made of the same material. Alternatively, the barrier layers can be made of different materials.

[0051] Several of the aforementioned alternatives can also be present or applied simultaneously, provided this is technically possible.

[0052] In particular, a barrier layer can be arranged on exactly one side face, or two barrier layers can be arranged on both side faces without an inner barrier layer. Exactly one barrier layer on one side face can also be combined with exactly one or more inner barrier layers. Likewise, two barrier layers on two side faces can be combined with exactly one or more inner barrier layers. Finally, exactly one inner barrier layer or several inner barrier layers without a barrier layer on the side face can also be present.

[0053] The targeted compression step can be performed in different ways for different barrier layers and / or at different times for different barrier layers. However, the targeted compression step can also be performed in the same way for different barrier layers and / or at the same time for different barrier layers.

[0054] The preferred application of the adhesive layer in the area of ​​the underside of the foam barrier membrane can take place at various times: before targeted compression, during targeted compression, after targeted compression and before compression of the entire foam barrier membrane, during compression of the entire foam barrier membrane, after compression of the entire foam barrier membrane, and optionally after compression of the entire foam barrier strip and cutting the compressed foam barrier membrane longitudinally to form compressed foam barrier strips.

[0055] Each adhesive layer within the scope of the present application is preferably a self-adhesive layer, particularly preferably a double-sided adhesive tape.

[0056] Further advantages and features of the present invention will become apparent from the following description of the figures. Fig. 1 is a perspective view of an embodiment of the sealing tape roll according to the invention with a partially unwound section of the sealing tape; Figs. 2a to 2c are cross-sectional views of the sealing tape of the sealing tape roll made of Fig. 1 in a fully expanded state ( Fig. 2a ), a compressed state in the sealing tape roll ( Fig. 2b ) and a partially compressed state, as in an installation situation ( Fig. 2c ); Figs. 3a to 3c are cross-sectional views of an alternative design of a sealing tape in a fully expanded state ( Fig. 3a ), a compressed state in the sealing tape roll ( Fig. 3b ) and a partially compressed state, as in an installation situation ( Fig. 3c ); Figs. 4a to 4c are cross-sectional views of an alternative design of a sealing tape in a fully expanded state ( Fig. 4a ), a compressed state in the sealing tape roll ( Fig. 4b ) and a partially compressed state, as in an installation situation ( Fig. 4c ); Figs. 5a to 5c are cross-sectional views of an alternative design of a sealing tape in a fully expanded state ( Fig. 5a ), a compressed state in the sealing tape roll ( Fig. 5b ) and a partially compressed state, as in an installation situation ( Fig. 5c ); Figs. 6a to 6c are cross-sectional views of an alternative embodiment of a sealing tape in a fully expanded state ( Fig. 6a ), a compressed state in the sealing tape roll ( Fig. 6b ) and a partially compressed state, as in an installation situation ( Fig. 6c ); Fig. 7 is a cross-sectional view of an installation situation of the sealing tape from the sealing tape roll according to Fig. 1 , wherein the sealing tape is in a partially compressed installed state; Fig. 8 is a schematic perspective view of possible design implementations of the steps of a method for manufacturing a sealing tape roll according to the invention; Fig. 9 is a schematic cross-sectional view of a possible design implementation of the targeted compression of the foam barrier layer membrane within a method for manufacturing a sealing tape roll according to the invention; Fig. 10 is a schematic perspective view of another possible design implementation of the targeted compression of the foam barrier layer membrane within a method for manufacturing a sealing tape roll according to the invention; Fig. 11 is a cross-sectional view of an outlet area of ​​the compression device made of Fig. 10 Fig. 12 is a schematic perspective view of a possible constructive implementation of an optional alternative step of a method for manufacturing a sealing tape roll according to the invention; Fig. 13 is a schematic perspective view of a possible constructive implementation of another optional alternative step of a method for manufacturing a sealing tape roll according to the invention; Fig. 14 is a schematic cross-sectional view of a possible arrangement for selectively compressing the foam barrier layer during the manufacture of a sealing tape roll according to the invention, which forms the sealing tape according to Fig. 4a includes; Fig. 15 is a schematic cross-sectional view of a possible arrangement for targeted compression of the foam barrier layer membrane during the manufacture of a sealing tape roll according to the invention, which forms the sealing tape according to Fig. 5a comprises; and Fig. 16 is a schematic cross-sectional view of a possible arrangement for targeted compression of the foam barrier layer membrane during the manufacture of a sealing tape roll according to the invention, which forms the sealing tape according to Fig. 6a includes.

[0057] In Fig. 1 Figure 2 shows a sealing tape roll in which a sealing tape 3 is wound in radially successive turns 5. The turns 5 can be separated from each other by unwinding, as shown in Figure 2. Fig. 1 shown.

[0058] In Fig. 1 The sealing tape 3 is shown in two different compression states: a fully compressed state within the windings 5 ​​of the sealing tape roll 2, and a fully expanded state, which the sealing tape only assumes after a few minutes to several hours after unwinding from the sealing tape roll 2 due to its delayed recovery properties achieved through suitable impregnation. In an installation situation such as that found in Fig. 7 As shown, the sealing tape 3 is in a partially compressed intermediate state, in which the sealing tape 3 is less compressed than in the compressed state in the sealing tape roll 2, but more compressed than in the fully expanded state.

[0059] The sealing tape 3 made of Fig. 1 The sealing tape 3 comprises at least one base body 4 made of a soft foam material capable of compression recovery. It includes a top surface 6, a bottom surface 8, a first side flank 10, and a second side flank 12, which connect the top surface 6 and the bottom surface 8.

[0060] The end faces of the sealing tape roll 2 are formed by sections of the two side flanks 10, 12 or by the entire side flanks 10, 12 and extend essentially perpendicular to a functional direction F of the sealing tape 3, which corresponds to a transverse direction Q of the sealing tape 3. The sealing tape 3 is wound around a rotation axis A in the sealing tape roll 2 such that, when unwound, the sealing tape 3 is pulled off in a longitudinal direction L that is perpendicular to the transverse direction Q or functional direction F and perpendicular to the rotation axis A.

[0061] The in Fig. 1 The illustrated design of the sealing tape roll 2, including the features mentioned above, applies to all embodiments of sealing tape rolls 2 with sealing tapes 3 as described below.

[0062] The in Fig. 2a bis Fig. 6c The cross-sections of sealing tapes 3 shown each represent sections through a plane of the sealing tape 3 that is parallel to the transverse direction Q and perpendicular to the longitudinal direction L.

[0063] The in Fig. 2a The illustrated embodiment of the sealing tape 3 comprises a barrier layer 18 for reducing water vapor diffusion and / or air permeability in the functional direction F, which is attached to the first side flank 10 of the sealing tape 3. The barrier layer 18 extends in the Fig. 2a The fully expanded state of the sealing tape 3 is shown to extend essentially in a straight line from the top 6 towards the bottom 8, but not along the top 6. In the fully expanded state of the sealing tape 3, the barrier layer 18 extends over the entire height of the base body 4 and completely covers the side flank 10.

[0064] In the area of ​​the underside 8, there is an adhesive layer 14 for adhesion to a component 30 (see Fig. 7 ), in particular a frame profile of a window or door.

[0065] Also in the Fig. 2b In the compressed state shown in the sealing tape roll 2, the barrier layer 18 completely covers the first side flank 10 of the sealing tape 3.

[0066] As from Fig. 2b Furthermore, as can be seen, the barrier layer 18, in the compressed state of the sealing tape 3, comprises an angled shape in an upper region, specifically the upper end section 20. This upper region 20, in the compressed state of the sealing tape 3, runs within the sealing tape roll 2 between the base bodies 4 of adjacent coils 4. The remaining region of the barrier layer 18, however, runs in the compressed state of the sealing tape 3 within the sealing tape roll 2 essentially transversely to the functional direction F. If, as in the exemplary embodiment of the Fig. 2a bis 2c Since the barrier layer 18 is fully bonded to the base body 4, the side flank 10 of the base body 4, together with the barrier layer 18, will deform into small bulges. The bulges shown in the side flank 10 are merely schematic and are somewhat less pronounced in reality. Similar bulges exist in the second side flank 12, but these are not shown in any of the figures.

[0067] In the Fig. 2c The partially compressed state of the sealing tape 3 shown corresponds to an installation situation of the sealing tape 3 according to Fig. 7 Correspondingly, the upper end section 20 has shifted slightly towards the first side flank 10 compared to the compressed state in Fig. 2d, due to the partial retraction of the base body 4 and the barrier layer 18 attached to it. However, in the installed position, it still forms a section that separates the base body 4 from the building wall 32, as shown in Fig. 7 This is shown. This ensures that the barrier layer 18 not only rests against the building wall 32 along a line, but also along an area, thus guaranteeing a reliable seal and preventing penetration channels. Even in the partially compressed state, the bulges in the side flanks are still present, although less pronounced than in the fully compressed state.

[0068] The in Fig. 3a bis 3c The illustrated embodiment of the sealing tape 3 differs from the embodiment according to Fig. 2a bis 2c in that, in addition, a lower end section 22 of the barrier layer 18 in the area of ​​the underside 8 is folded inwards, so that in the compressed state of the sealing tape 3 ( Fig. 3b ) is arranged within the sealing tape roll 2. The folded-over lower end section 22 is also present in the fully expanded state of the sealing tape ( Fig. 2a ) and in a partially compressed state ( Fig. 3c ) folded inwards and permanently attached to the base body 4.

[0069] In the Fig. 3c The partially compressed state shown thus results in the same way as in the compressed state according to Fig. 3b each a barrier layer 18 which not only covers the side flank 10, but also the adjoining edge areas of the top surface 6 or bottom surface 8 of the base body 4.

[0070] In the fully expanded state according to Fig. 3a In contrast, only the lower edge of the side flank 10 is covered with the folded-over barrier layer 18, while the barrier layer 18 ends flush with the upper edge of the side flank 10.

[0071] It is also conceivable to equip both side flanks 10, 12 with corresponding barrier layers 18 according to one of the preceding embodiments.

[0072] It is also conceivable not to bond the barrier layer 18 continuously to the base body 4, but only at specific points or in sections. In any case, it is important to establish a bond between the barrier layer 18 and the base body 4 in the area of ​​the upper end section 20 and, if present, in the area of ​​the lower end section 22.

[0073] In the Fig. 4a bis 4c In the illustrated embodiment of the sealing tape 3, two barrier layers 18 are arranged inside the sealing tape 3 and each is surrounded on both sides by two base bodies 4. Preferably, the two barrier layers 18 are attached to the central base body 4.

[0074] Apart from the position of each of the barrier layers 18 within the sealing strip 3, the same specifications apply as previously described for the barrier layer 18 of the embodiments according to Fig. 2a bis 2c and Fig. 3a bis 3c were made. As from Fig. 4b As can be seen, the two upper end sections 20 of the two barrier layers 18 are each facing each other, with a section of the base body 4 still exposed between them.

[0075] In that respect, it shows Fig. 4b a design in which the two barrier layers 18 run inside the sealing tape roll 2 and are axially surrounded by two separate base bodies 4.

[0076] The embodiment according to Fig. 5a bis 5c corresponds to the embodiment according to Fig. 4a bis 4c except for the fact that the two barrier layers 18 are each only attached to the two outer base bodies 4. In the compressed state according to Fig. 5b This results in an alignment of the upper end sections 20 of the barrier layers 18, which are turned away from each other and are each aligned in the direction of the nearer side flank 10, 12 of the sealing strip 3.

[0077] The in Fig. 6a bis 6c The illustrated embodiment of the sealing tape 3 differs from the embodiments according to Fig. 4a bis 5c by providing four barrier layers 18, each of which is attached to the mutually facing surfaces of the three base bodies 4. The barrier layers 18 that are adjacent to each other are preferably not attached to each other. In the Fig. 6b In the compressed state shown, an arrangement of four upper end sections 20 of the barrier layers 18 is thus obtained on the upper side 6 of the sealing tape 3, wherein two adjacent upper end sections 20 run in opposite directions.

[0078] In the exemplary embodiments according to Fig. 4a bis Fig. 6c It is also conceivable that the barrier layers 18 are each attached to all adjacent structural elements. For example, the two barrier layers 18 in Fig. 4a bis 4c or Fig. 5a bis 5c not only be connected to one adjacent base body 4, but also to both adjacent base bodies 4. Likewise, it is conceivable that two adjacent barrier layers 18 in the embodiment according to Fig. 6a bis 6c are bound together. In these cases, however, different profiles of the barrier layers 18 result in the compressed and partially compressed states. In any case, a curved shape remains in an upper area of ​​the barrier layer 18 in the compressed state of the sealing tape 3 in the sealing tape roll 2.

[0079] The barrier layers 18 in all the aforementioned embodiments may also extend only partially, but not continuously, from the top surface 6 of the sealing tape towards the bottom surface 8. If this is the case in the embodiments according to Fig. 4a bis Fig. 6c When applied, a connecting web remains in a lower area of ​​the sealing tape between interconnected sections of the same base body 4. In this case, there is only one base body 4, which is divided into different subsections by the barrier layers 18.

[0080] In the embodiments according to Fig. 4a bis Fig. 5c It is also possible that only one barrier layer 18 is provided, or that more than two barrier layers 18 are provided. Likewise, in the embodiment according to Fig. 6a bis 6c only two blocking layers 18 are provided for, or more than four blocking layers 18 are provided for.

[0081] It is possible to combine all the aforementioned embodiments, for example to combine a barrier layer 18 on one or more of the side flanks 10, 12 with one or more internal barrier layers 18.

[0082] In all embodiments, the barrier layer 18 must be bonded to the base body 4 at least in its upper end section 20. Continuous bonding is advantageous.

[0083] The barrier layers 18 are in the embodiments according to Fig. 4a bis 6c even in a compressed state ( Fig. 4b , 5b , 6b ) and in a partially compressed state ( Fig. 4c , 5c ,6c ) drawn as straight lines. In reality, the barrier layer 18, together with the adjacent base body 4 or the adjacent base bodies 4, does not usually run linearly in these areas either, but shows certain bulges due to compression effects, as shown in the diagram. Fig. 2a bis 3c explained. For the sake of simplicity, this is in the Figuren 4b, 4c , 5b , 5c , 6a und 6c not shown.

[0084] In Fig. 8 A possible line for carrying out a method for producing a sealing tape roll 2 according to the invention is schematically shown. First, a foam barrier layer sheet 24 is provided, which comprises at least one soft foam body 26 that is resilient after compression and at least one barrier layer 18. In the present example, there is exactly one foam body 26 with exactly one barrier layer 18.

[0085] As from Fig. 9 As can be seen, the foam barrier layer 24 comprises a top surface 46, a bottom surface 48, and two side faces 50, 52, which connect the top surface 46 and the bottom surface 48. A transverse direction Q of the foam barrier layer 24 extends parallel to the bottom surface 48 of the foam barrier layer 24 from the first side face 50 to the second side face 52. A longitudinal direction L of the foam barrier layer 24 is oriented parallel to the bottom surface 48 of the foam barrier layer 24 and perpendicular to the transverse direction Q.

[0086] The barrier layer 18 extends only from the top surface 46 of the foam barrier layer 24 in a substantially straight line towards the bottom surface 48 of the foam barrier layer 24, and preferably continuously to the bottom surface 48, but does not run on the top surface 46 of the foam barrier layer 24. In the illustrated example, the barrier layer 18 is adhered to and completely covers the entire first side 50 of the foam barrier layer 24. The foam barrier layer 24 is preferably provided in a fully expanded state. The foam barrier layer 24 is impregnated for delayed recovery, as already described in more detail above with regard to the sealing tapes.

[0087] As the foam barrier layer 24 continues to move in the longitudinal direction L, it passes through a Fig. 8 The compression device 28, shown only schematically, is for selectively compressing at least a predetermined section of the foam barrier layer 24. Possible embodiments of the compression device 28 for selective compression are described below with reference to Fig. 9 bis 11 described.

[0088] Subsequently, the entire foam barrier layer web 24 is further compressed by means of second compression rollers 34, 36, while maintaining the curved or angled shape of the barrier layer 18 achieved during targeted compression.

[0089] Subsequently, an adhesive layer 14, supplied on a roll 38, preferably covered on one side, is applied to the underside 48 of the foam barrier sheet 24. This adhesive layer is applied, for example, by means of one or two pressure rollers 40. Because the foam barrier sheet 24 is impregnated with an impregnating agent that ensures delayed recovery after compression of the foam core 26, the foam barrier sheet 24 remains compressed after the compression process. Thus, the adhesive layer 14 can be applied to the compressed foam barrier sheet 24, and the compressed foam barrier sheet 24, coated with the adhesive layer 14, can be wound around the axis of rotation A onto the sealing tape roll 2.

[0090] The application of the adhesive layer 14 can be carried out as described in Fig. 8 As shown, this can occur during the winding process to the sealing tape roll 2 by using the same pressure roller 40 to press the adhesive layer 14 onto the foam barrier layer 24, which also provides the necessary contact pressure during the winding of the sealing tape roll 2. It is also conceivable that the adhesive layer 14 is applied to the foam barrier layer 24 in the area between the compression rollers 34, 36 and the sealing tape roll 2 by means of two additional pressure rollers 40, or that the adhesive layer 14 is fed between the two compression rollers 34, 36 and applied to the foam barrier layer 24 by their contact pressure.

[0091] Instead of the series-connected arrangement of the compression device 28 for selectively compressing a predetermined section of the foam barrier layer 24 and the two compression rollers 34, 36, it is also conceivable to carry out both processes simultaneously in different sections of the foam barrier layer 24 that are adjacent to each other in the transverse direction Q of the foam barrier layer 24. For example, the first side edge 50 could be selectively deformed by means of the compression device 28, while the remaining width of the foam barrier layer 24 is continuously compressed by compression rollers 34, 36 arranged next to the compression device 28.

[0092] In Fig. 9 Figure 28 shows one possible configuration of the compression device for selectively compressing a section of the foam barrier layer membrane 24. The figure shown in Figure 28 is a compression device for the targeted compression of a section of the foam barrier layer membrane 24. Fig. 9 The cross-section shown is a section in a plane that is parallel to the transverse direction Q and perpendicular to the longitudinal direction L.

[0093] In the example case of the Fig. 9 The side flank 50 of the foam barrier layer 24 is selectively deformed such that an upper end section 42 of the barrier layer 18, which was previously located in the area of ​​the side flank 50, is bent inwards, thus giving the barrier layer 18 a curved or angled shape. The barrier layer 18, which previously ran linearly and perpendicularly along the side flank 50, is then bent laterally along with the side flank 50, and thus also extends in the transverse direction Q of the foam barrier layer 24. The greater the degree of selective compression, the greater the bending of the barrier layer 18. The bending can be so pronounced that the upper end section 42 of the barrier layer 18 runs completely in the transverse direction Q of the foam barrier layer 24 in a partial area, or even points towards the underside 48 of the foam barrier layer 24.

[0094] The compression device 28 is, in the example case, the Fig. 9 The device is equipped with two compression elements 54 that act on the top 46 and the bottom 48 of the foam barrier layer 24, respectively. In the illustrated case, the compression elements 54 are compression wheels that are positioned opposite each other and compress the foam body 26 between them. Due to the delayed recovery properties of the foam body 26, it remains in a selectively compressed state even after the compression process until further processing.

[0095] Instead of compression wheels, appropriately shaped, narrow compression plungers with a flat and smooth surface can also be used as compression elements 54, which extend in the longitudinal direction L of the foam barrier layer sheet 24 and preferably converge towards each other in the direction of movement of the foam barrier layer sheet 24.

[0096] It is also conceivable that the compression device 28 has only one compression element 54 acting on the upper side 46 of the foam barrier layer 24, while the lower side 48 of the foam barrier layer 24 is guided on a hard substrate 56, as shown in Fig. 14 bis 16 is shown schematically. The hard substrate 56 is then preferably a rigid plate which has a smooth surface towards the foam barrier layer 24.

[0097] The area of ​​the foam strip 26 that is selectively compressed by the compression device 28 is arranged laterally to the barrier layer 18, preferably within 3 mm to 3 cm next to the barrier layer 18. Because the compression element(s) 54 preferably only compress the foam body 26 at specific points, the compression element(s) 54 have a width in the transverse direction Q of the foam barrier layer 24 of between 0.5 mm and 20 mm.

[0098] In Fig. 10 An alternative embodiment of the compression device 28 for selectively compressing a section of the foam barrier layer 24 is shown. In this case, the compression device 28 comprises a forming shoulder 58 with a forming surface that is C-shaped in cross-section or formed as a partial section of a C-shape. As the foam barrier layer 24 passes through the forming shoulder 58, the edge region of the foam barrier layer 24 received in the forming shoulder 58 is compressed and simultaneously transformed into a curved shape.

[0099] Fig. 11 shows a corresponding cross-section in the starting area of ​​the forming shoulder 58. Fig. 10 For illustrative purposes, only the edge section of the foam barrier layer 24 is shown, which is deformed by the forming shoulder 58, while the remaining part of the foam barrier layer 24 is cut off. Fig. 11 Figure 24 shows this other section of the foam barrier layer web 24 in cross-section. The compression rollers 34 and 36 are also shown in Figure 3. Fig. 10 They are only shown in sections. In reality, they extend across the entire width of the foam barrier layer 24 in the transverse direction Q and thus in Fig. 10 further out of the drawing plane.

[0100] Both in the design of the compression device 28 according to Fig. 9 as well as the design according to Fig. 10 and 11The side flank 50 is folded inwards into a C-shape at both the upper and lower end regions. It is also conceivable to bend only the upper end section of the side flank 50 inwards. For this purpose, a compression element 54 in the area of ​​the upper surface 46 of the foam barrier layer 24 is sufficient, or a forming shoulder 58 is used, which only causes a tapering of the foam barrier layer 24 in the area of ​​the side flank 50 at the upper end, while the lower part of the side flank 50 is not subjected to any force. Accordingly, this corresponds to the effect described in Fig. 9 bis 11 The sealing tape 3 produced in the illustrated embodiments of the compression device 28 is shown in the illustrations. Fig. 3a bis 3c The variant of the sealing tape shown. However, when using only one compression element 54 on the upper surface 46 of the foam barrier layer 24 or a shape of the forming shoulder 58 that only deforms the upper area of ​​the foam barrier layer 24 in the area of ​​the side flank 50, a sealing tape 3 is produced according to the one shown in Fig. 2a bis 2c The depicted embodiment is produced.

[0101] Fig. 12 shows an alternative to the final process step in the production of a sealing tape roll 2. Instead of, as in Fig. 8 As shown, the foam barrier layer sheet 24 is wound directly onto the sealing tape roll 2 in a compressed state, as shown in Fig. 12 As shown, it is also conceivable to wind the foam barrier layer sheet 24 in its compressed state around the axis of rotation A to form an intermediate roll 60 and to cut the intermediate roll 60 at one point in the axial direction using a cutting device 62 in order to produce a plurality of sealing tape rolls 2 that are narrower than the intermediate roll 60. In the present example, the intermediate roll 60 is cut exactly once in the middle, so that two sealing tape rolls 2 are produced. In this example, both end faces of the intermediate roll 60 are provided with a barrier layer 18, which is also folded inwards.

[0102] The inwardly folded section of the barrier layer 18 lies inside the sealing tape roll 2 between the individual coils 5 and is not visible from the outside. It is nevertheless shown for illustrative purposes in Fig. 12 Marked with dashed lines.

[0103] In this way, the cutting process creates two symmetrical sealing tape rolls 2 with the additional advantage that the cut surface is perfectly flat. More than two sealing tape rolls 2 can also be produced simultaneously in this way.

[0104] In Fig. 13 Another alternative of the final steps for the production of sealing tape rolls 2 is shown. In this step, the compressed foam barrier layer web 24 is cut longitudinally L by means of a cutting device 64 to form compressed foam barrier layer strips 70, and the compressed foam barrier layer strips 70 are each wound around a rotation axis A, A' to form individual sealing tape rolls 2. The rotation axes A and A' can also coincide.

[0105] At the in Fig. 13 The inwardly folded section of the barrier layer 18 of the front sealing tape roll 2 lies inside the sealing tape roll 2 between the individual coils 5 and is not visible from the outside. It is nevertheless marked with a dashed line for illustrative purposes.

[0106] In the case of the Fig. 13 Is it conceivable to equip the foam barrier layer sheet 24 with the adhesive layer 14 before cutting it, or to equip the foam barrier layer strips 70 formed by cutting with an adhesive layer 14 each before they are wound up to the sealing tape rolls 2?

[0107] The sealing tape rolls 2 in Fig. 13 They are rolled up in different configurations, once with adhesive layer 14 facing inwards and once with adhesive layer 14 facing outwards. Unlike in Fig. 13 All sealing tape rolls 2 can also be wound up in the same configuration, either with the adhesive layer 14 facing outwards or with the adhesive layer 14 facing inwards.

[0108] In Fig. 13 Exactly two sealing tape rolls 2 are produced. However, more than two sealing tape rolls 2 can also be produced simultaneously in this way.

[0109] In Fig. 14 One possibility is shown how targeted compression can be carried out to create a sealing tape 3 according to the in Fig. 4a bis 4c to produce the illustrated embodiment.

[0110] The deformation on the upper surface 46 of the foam barrier layer 24 is carried out centrally by means of the compression device 28 or the compression element 54. The lower surface 48 of the foam barrier layer 24, on the other hand, is supported on a hard substrate 56 and is not deformed.

[0111] In this embodiment, the two barrier layers 18 are preferably attached to the middle of the three foam bodies 26, but not to the two outer foam bodies 26. However, it is also conceivable to attach the barrier layers 18 to all three foam bodies 26.

[0112] In Fig. 15 One possibility is shown how targeted compression can be carried out to create a sealing tape 3 according to the in Fig. 5a bis 5c to produce the illustrated embodiment.

[0113] The deformation on the upper surface 46 of the foam barrier layer 24 takes place at the two edge regions of the foam barrier layer 24 by means of the compression elements 54. The lower surface 48 of the foam barrier layer 24, on the other hand, is supported on a hard substrate 56 and is not deformed.

[0114] In this embodiment, the two barrier layers 18 are preferably attached to the two outer foam bodies 26, but not to the middle foam body 26. It is also conceivable to attach the barrier layers 18 to all three foam bodies 26.

[0115] In Fig. 16 One possibility is shown how targeted compression can be carried out to create a sealing tape 3 according to the in Fig. 6a bis 6c to produce the illustrated embodiment.

[0116] The deformation on the upper surface 46 of the foam barrier layer 24 is effected by means of the three compression elements 54 on the two outer foam bodies 26 and on the middle foam body 26. The underside 48 of the foam barrier layer 24, on the other hand, is supported on a hard substrate 56.

[0117] In this embodiment, the four barrier layers 18 are preferably each attached to the adjacent foam body 26, but not attached to each other. However, it is also conceivable to attach the adjacent barrier layers 18 to each other.

[0118] The same boundary conditions and characteristics apply to the foam barrier layer membrane 24 and the barrier layers 18 during the production of the sealing tape rolls 2 as have already been described previously for the different sealing tapes 3.

[0119] When the foam barrier layer sheet 24 is wound directly onto a sealing tape roll 2, the foam bodies 26 correspond to Fig. 8 bis 16the base bodies 4 of the sealing tape 3. In particular, the barrier layers 18 can also extend only over part of the height of the foam body 26. In this case, a foam web remains between the individual sections of the soft foam on the underside in the area of ​​the barrier layer 18, and a continuous foam body 26 is present, the several sections of which are connected to each other by means of the soft foam webs.

[0120] Finally, the type and number of barrier layers and their adhesion to the different foam bodies 26 or sections of the foam body 26 are variable according to the previously made statements for the sealing tape 3.

[0121] The provision of the respective foam barrier layer 24 at the beginning of the process can be carried out in a variety of ways. A number of possibilities are known from the prior art, all of which can be used. One example is the lamination of at least one barrier layer 18 onto at least one foam strip to produce a foam barrier layer 24. Any method of providing a suitable foam barrier layer 24 can be used, whether by in-house production or by purchasing corresponding foam barrier layer sheets 24. The process is based on further processing a foam barrier layer 24 provided in any manner known from the prior art, thus obtaining a sealing tape roll 2 according to the invention.

Claims

1. Sealing tape roll (2) with a sealing tape (3) wound in radially successive turns (5) in a compressed state, which can be separated from one another by unwinding, wherein the sealing tape (3) has at least one base body (4) made of a soft foam material capable of recovery after compression, wherein the sealing tape (3) has a bottom surface (8), a top surface (6) and a first and a second side flank (10, 12) connecting the top surface (6) and bottom surface (8) to each other, wherein end faces of the sealing tape roll (2) are formed by the side flanks (10, 12) or sections thereof and extend substantially perpendicular to a functional direction (F) of the sealing tape (3), wherein an adhesive layer (14) is arranged in the region of the bottom surface (8) for adhesion to a component (30), in particular a frame profile of a window or door,wherein the sealing tape (3) has at least one barrier layer (18) for reducing water vapor diffusion and / or air permeability in the functional direction (F), wherein the at least one barrier layer (18) in a fully expanded state of the sealing tape (3) extends substantially in a straight line from the top (6) towards the bottom (8), but not along the top (6), and wherein the at least one barrier layer (18) in the compressed state of the sealing tape (3) in the sealing tape roll has a curved or angled shape at least in an upper region.

2. Sealing tape roll (2) according to claim 1, characterized by the fact that the at least one barrier layer (18) extends over the entire height of the base body (4) in the fully expanded state of the sealing tape (3).

3. Sealing tape roll (2) according to claim 1 or 2, characterized by the fact thatthe at least one barrier layer (18) in the compressed state of the sealing tape (3) in the sealing tape roll extends section by section substantially transverse to the functional direction (F), preferably radially, and that the at least one barrier layer (18) in the compressed state of the sealing tape (3) in the sealing tape roll additionally extends section by section between the base bodies (4) of adjacent windings (5).

4. Sealing tape roll (2) according to one of the preceding claims, characterized by the fact that the at least one barrier layer (18) substantially completely covers the first side flank (10) of the sealing tape (3) both in the compressed state of the sealing tape (3) in the sealing tape roll and in the fully expanded state of the sealing tape (3).

5. Sealing tape roll (2) according to claim 4, characterized by the fact thata lower end section (22) of the at least one barrier layer (18) in the area of ​​the underside (8) is folded inwards, so that in the compressed state of the sealing tape (3) it is arranged inside the sealing tape roll, wherein the folded lower end section (22) also remains folded inwards in the fully expanded state of the sealing tape (3) and is permanently attached to the base body (4).

6. Sealing tape roll (2) according to claim 4 or 5, characterized by the fact that an upper end section (20) which is permanently attached to an upper end region of the first side flank (10) in the fully expanded state of the sealing tape (3).

7. Sealing tape roll (2) according to one of the preceding claims, characterized by the fact that at least one barrier layer (18) runs inside the sealing tape roll and is axially surrounded by two interconnected sections of the base body (4) or by two separate base bodies (4).

8. Sealing tape roll (2) according to claim 7, characterized by the fact that the at least one barrier layer (18) inside the sealing tape roll is permanently attached to at least one, preferably exactly one, of the two interconnected sections of the base body (4) or to at least one, preferably exactly one of the two base bodies (4).

9. Sealing tape roll (2) according to one of the preceding claims, characterized by the fact that the at least one barrier layer (18) is formed from a film-like material and / or an adhesive, in particular from a film web, a film strip, a strip of adhesive tape or a cured adhesive-like liquid medium.

10. Sealing tape roll (2) according to one of the preceding claims, characterized by the fact that the at least one barrier layer (18) having a thickness of 1 µm to 5 mm, preferably of 10 µm to 3 mm, particularly preferably of 50 µm to 2 mm.

11. Sealing tape roll (2) according to one of the preceding claims, characterized by the fact that the air permeability of at least one barrier layer (18) less than 50 l / (m²) 2 s), preferably less than 20 l / (m²) 2 s), especially preferably less than 10 l / (m²) 2 s), is measured according to DIN EN ISO 9237:1995.