Plaster sealing strip

Abstract

Plaster sealing strip (1), comprising a base leg (2) with a retaining web (3) and a plastering leg (4), wherein a longitudinal groove (9) is provided in the base leg (2) in which a first sealing strip (10) is received, and wherein a second sealing strip (12) is provided in the area of ​​the retaining web (3) which covers the open side of the groove (9) in which the first sealing strip (10) is received, characterized in that a support (11) is provided to which the second sealing strip (12) is attached and that the support (11) is connected to the retaining web (3) of the plaster sealing strip (1) by a releasable latch (20).

Description

[0001] The invention relates to a plaster sealing strip with the features of the introductory part of claim 1.

[0002] Similar plaster sealing strips are known in various embodiments, in which context reference is made to AT 506 410 B1, EP 2 116 682 A2, WO 2010 / 099933 A1, AT 14 775 U1, AT 17 402 U1 and AT 15 354 U1.

[0003] Sealing devices with profile strips are known from WO 2010 / 099934 A1 and WO 2010 / 099933 A1.

[0004] From EP 1 947 280 A2, a profile connection strip for a transition from a building component to a building wall is known. The known profile connection strip has a foam tape arrangement that is directly or indirectly connected to the profile connection strip by means of an adhesive bond and can be directly or indirectly connected to the building component. The foam tape arrangement has a thickness of at least 5 mm perpendicular to the profile connection strip and is formed from two interconnected, different foam tapes.

[0005] A generic, well-known plaster sealing strip (cf. Fig. 1) comprises a base leg, which has a retaining web, and a plastering leg. Reinforcing mesh is attached to the plastering leg by means of a retaining strip. Opposite the retaining web, a plastering strip projects from the base leg, to which a detachable protective leg is provided. A hollow, round foam cord is inserted as the first sealing strip in a longitudinal groove of the retaining web and glued to the bottom of the groove. A foam strip coated with adhesive on both sides is glued to the side of the retaining web opposite the plastering leg as the second sealing strip. Since the second sealing strip has an adhesive layer on both sides, it can be glued to the first sealing strip and to a building component. The second sealing strip extends beyond the open side of the groove and holds the first sealing strip, possibly compressed, in the groove.

[0006] If the gap between the building structure and the component (door frame, window frame, etc.) installed in an opening in the building structure widens, the second sealing strip should detach from the retaining strip, remain adhered to the component, and partially pull the first sealing strip out of the channel. The first sealing strip then bridges the gap formed between the second sealing strip and the retaining strip of the plaster sealing bead.

[0007] The problem arises when the adhesive bond between the retaining rib of the base leg of the plaster sealing strip and the second sealing tape is not less than the adhesive bond between the second sealing tape and the building component. This results in the second sealing tape not detaching from the base leg of the plaster sealing strip, but rather from the building component itself. This occurs, for example, when the bond between the second sealing tape and the building component is defective. This can happen if the surface of the building component to which the second sealing tape is to be bonded is contaminated with materials such as sand, dust, building components, and the like, or if the bonding was improperly applied.

[0008] The invention is based on the objective of solving the aforementioned problem of the known plaster sealing strip, which is used in Fig. 1 is shown, to be eliminated.

[0009] This problem is solved with a plaster sealing strip that has the features of claim 1.

[0010] Preferred and advantageous embodiments of the plaster sealing strip according to the invention are the subject of the dependent claims.

[0011] In the plaster sealing strip according to the invention, the second sealing tape is not attached directly to the base leg or its retaining web, but rather glued to a carrier. The carrier is coupled to the base leg by a releasable snap-fit ​​connection. This allows the holding force between the carrier, to which the second sealing tape is attached, and the base leg to be kept so low that the holding force of the adhesive bond between the second sealing tape and the component is always greater.

[0012] The releasable locking mechanism can, for example, be designed as a longitudinal rib with a thickening or widening at its free edge, which engages through a slot into a longitudinal cavity. The thickening or widening is elastically deformable, allowing it to be pressed into the longitudinal cavity through the slot under elastic compression. The thickening can have a round or polygonal cross-sectional shape.

[0013] In a preferred embodiment, the locking mechanism between the carrier and the base leg has a possibly interrupted, longitudinal rib designed as a hook strip, which engages through the slot into the longitudinal cavity in the base profile strip.

[0014] In a preferred embodiment, the longitudinal rib comprises a web extending from the support. A thickening or widening is provided at the free edge of the web, which, when the locking mechanism is closed, is received within the longitudinally slotted cavity. In a preferred embodiment, the widening consists of one, two, or more than two lips projecting from the web and forming hooks together with the web. For example, the rib is designed as a (barbed) hook strip.

[0015] Preferably, the lips – if at least two lips are provided – enclose an obtuse angle with each other and are oriented obliquely from the free edge of the web of the rib towards the support.

[0016] Further details and features of the plaster sealing strip according to the invention will become apparent from the following description of an exemplary embodiment of a plaster sealing strip according to the invention and the aforementioned known plaster sealing strip with reference to the drawings. The drawings show: Fig. 1 in oblique view the familiar plaster sealing strip, Fig. 2 a plaster sealing strip according to the invention in front view, Fig. 3 the plaster sealing strip according to the invention in oblique view and Fig. 4 the plaster sealing strip according to the invention after releasing the locking mechanism.

[0017] One in Fig. The known plaster sealing strip 1 shown in Figure 1 has a base leg 2. The base leg 2 comprises a retaining web 3 and a plastering leg 4. Reinforcing mesh 6 is attached to the plastering leg 4 by means of a retaining strip 5. A plaster strip 7, to which a detachable protective leg 8 is provided, projects from the base leg 2 opposite the retaining web 3. A hollow, closed-cell foam cord is inserted into a longitudinal groove 9 of the retaining web 3 and glued in place as the first sealing strip 10. The first sealing strip 10 can also be a solid cord.

[0018] A second sealing strip 12 made of open-cell foam is adhered to the retaining rib 3. The second sealing strip 12 has adhesive layers on both sides, allowing it to be attached to a component by gluing and bonded to the first sealing strip 10. The second sealing strip 12 extends over the open side of the channel 9 and holds the first sealing strip 10, possibly compressed, within the channel 9. The first sealing strip 10 is stretched or expanded when the second sealing strip 12 is detached from the retaining rib 3.

[0019] Below is a description of an invention according to the invention, in the Fig. 2, Fig. 3 to Fig. 4. The plaster sealing strip 1 shown is described: The plaster sealing strip 1 has a base leg 2. The base leg 2 includes a retaining web 3 and a plastering leg 4. Reinforcing mesh 6 is attached to the plastering leg 4 with the help of a retaining strip 5. On the base leg 2, opposite the retaining bridge 3, a plaster strip 7 is provided, on which a protective leg 8 is provided that can be detached.

[0020] In a longitudinal groove 9 of the support rib 3, a round cord, preferably hollow, made of closed-cell foam is inserted as a first sealing strip 10 and glued to the bottom of the groove 9. The first sealing strip 10 can also have a polygonal cross-sectional shape. In this embodiment as well, the first sealing strip 10 can be hollow.

[0021] A second sealing strip 12 made of open-cell foam is arranged on a carrier 11, which is detachably held on the retaining web 3 by a locking mechanism 20.

[0022] The second sealing tape 12 has adhesive layers on both sides, allowing it to be attached to the carrier 11 and to a component by bonding. The second sealing tape 12 is bonded to the first sealing tape 10 at its outer surface located in the open side of the channel 9.

[0023] The second sealing tape 12 extends over the open side of the channel 9 and holds the first sealing tape 10, possibly compressed, in the channel 9.

[0024] The carrier 11 for the second sealing strip 12 is held on the retaining web 3 by the releasable locking mechanism 20.

[0025] The locking mechanism 20 comprises a longitudinal rib 13 projecting from the support 11, which has an elastically deformable thickening or widening at its free edge, which engages through a slot 14 in a longitudinal cavity 15 provided in the retaining web 3.

[0026] The locking mechanism 20 includes in the Fig. 2, Fig. 3 to Fig. In the embodiment shown in Figure 4, a longitudinal rib 13 with a barbed cross-sectional shape projects from the support 11. The rib 13 engages through the longitudinal slot 14 into the longitudinal cavity 15 provided in the retaining web 3. The longitudinal rib 13 can be continuous along the length of the plaster sealing strip 1 or formed by a series of short ribs 13.

[0027] The rib 13, with its barbed cross-sectional shape, comprises a web 16. When the locking mechanism 20 is closed, the web 16 engages through the slot 14 into the longitudinal cavity 15. The web 16 of the rib 13 has two lips 17 extending from its free edge, which lies within the cavity 15 when the locking mechanism 20 is closed. The lips 17 project from both sides of the web 16 and are elastically deformable. The lips 17 form an angle with each other, in particular an obtuse angle. The lips 17 are at an acute angle to the web 16 of the rib 13 and are oriented from the free edge of the web 16 towards the support 11, resulting in a substantially symmetrical barbed cross-sectional shape for the rib 13. When the locking mechanism 20 is closed, the free edges of the lips 17, for example, rest on wall sections 18 and 19 from the inside, which define the cavity 15 in the area of ​​the slot 14.The free edges of the lips 17 do not necessarily have to rest against the wall sections 18 and 19. Rather, there can be a gap between the free edges of the lips 17 and the inwardly facing surfaces of the wall sections 18 and 19.

[0028] Also considered are embodiments with only one lip 17 as a widening, which extends from the bridge 16 to one side, or with two lips 17 as a widening, which extend from the bridge 16 to one side or to both sides.

[0029] To close the locking mechanism 20, the rib 13 is pushed through the slot 14 into the cavity 15. During this movement through the slot 14, the free edges of the lips 17 are brought closer to the web 16 by elastic deformation of the lips 17. As soon as the lips 17 are in the cavity 15, they spring back and engage the space within the cavity 15. Fig. 2 position shown. In this position - closed locking 20 - the support 11 is held in contact with the retaining web 3 when the free edges of the lips 17 rest against the wall parts 18 and 19.

[0030] Since the lips 17 of the rib 13, which form a widening, are elastically deformable, the rib 13 can be moved out of the cavity 15 when the locking mechanism 20 is released, with elastic deformation of the lips 17 – the lips 17 pivoting away from the support 11. This allows the support 11 to detach from the retaining web 3 of the base leg 2 and the in Fig. Assume the position shown in example 4.

[0031] The first sealing strip 10 has an elongated cross-sectional shape and is partially arranged outside the channel 9 when the second sealing strip 12 is separated from the retaining web 3, after the carrier 11 for the second sealing strip 12 has detached from the retaining web 3 by opening (releasing) the locking mechanism 20. The plaster sealing strip 1 according to the invention then bridges a joint that has formed between the edge of an opening in the building and a component arranged in the opening. In detail, in the position according to Fig. 4 the space between the retaining rib 3 and the second sealing strip 12 is bridged by the first sealing strip 10.

[0032] Thanks to the special design of the locking mechanism 20 of the plaster sealing strip 1 according to the invention, it is ensured that the holding force of the locking mechanism 20 is reliably less than the holding force of the adhesive bond between the second sealing tape 12 and the component. For example, the locking mechanism 20 between the carrier 11 and the retaining web 3 of the base leg 2 can be designed such that it releases the carrier 11 when a force of less than 150 N / 10 cm of longitudinal extent of the plaster sealing strip 1 is applied to the carrier 11. It is preferred in the invention if the locking mechanism 20 releases the carrier 11 when a force of more than 30 N / 10 cm is applied to the carrier 11. The locking mechanism 20 is particularly preferably intended to release the support 11 when a force of 40 to 100 N / 10 cm acts on the support 11, and most preferably when a force of 50 to 70 N / 10 cm is applied along the longitudinal extent of the plaster sealing strip 1.In particular, the locking mechanism 20 can release the support 11 when a force of 60 N / 10 cm of the longitudinal extent of the plaster sealing strip 1 acts on the support 11.

[0033] In summary, an embodiment of the invention can be described as follows: A plaster sealing strip 1 comprises a base leg 2 with a retaining web 3 and a plastering leg 4. A longitudinal groove 9 is provided in the base leg 2. A first sealing strip 10 is accommodated in the groove 9. A second sealing strip 12 is provided in the area of ​​the retaining web 3, which covers the open side of the groove 9 in which the first sealing strip 10 is accommodated. A support 11 is provided to which the second sealing strip 12 is attached. The support 11 is connected to the retaining web 3 of the plaster sealing strip 1 by a releasable locking mechanism 20. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] AT 506 410 B1

[0002] EP 2 116 682 A2

[0002] WO 2010 / 099933 A1 [0002, 0003] AT 14 775 U1

[0002] AT 17 402 U1

[0002] AT 15 354 U1

[0002] WO 2010 / 099934 A1

[0003] EP 1 947 280 A2

[0004]

Claims

[1] Plastering sealing strip (1) comprising a base leg (2) with a retaining web (3) and a plastering leg (4), wherein a longitudinal groove (9) is provided in the base leg (2) in which a first sealing strip (10) is received, and wherein a second sealing strip (12) is provided in the area of ​​the retaining web (3) which covers the open side of the groove (9) in which the first sealing strip (10) is received, characterized by , that a support (11) is provided to which the second sealing tape (12) is attached and that the support (11) is connected to the retaining web (3) of the plaster sealing strip (1) by a releasable locking device (20). [2] Plaster sealing strip according to claim 1, characterized by , that the first sealing tape (10) is formed as a strip, in particular as a possibly hollow round cord, made of foam. [3] Plaster sealing strip according to claim 1 or 2, characterized by, that the second sealing tape (12) is a foam tape coated with an adhesive layer on both sides. [4] Plaster sealing strip according to one of claims 1 to 3, characterized by , that the first sealing tape (10) consists of closed-cell foam. [5] Plaster sealing strip according to one of claims 1 to 4, characterized by , that the second sealing tape (12) consists of open-cell foam. [6] Plaster sealing strip according to one of claims 1 to 5, characterized by , that the second sealing tape (12) is attached to the carrier (11) by gluing. [7] Plaster sealing strip according to one of claims 1 to 6, characterized by , that the locking mechanism (20) comprises a possibly interrupted rib (13) extending in the longitudinal direction of the plaster sealing strip (1) with a thickening or widening, in particular with a barbed cross-sectional shape. [8] Plaster sealing strip according to claim 7, characterized by, that the longitudinal rib (13) comprises a web (16) extending from the support (11) and at least one lip (17) projecting from the free end of the web (16), preferably two lips (17) projecting from the free end of the web (16). [9] Plaster sealing strip according to claim 7 or 8, characterized by , that the longitudinal rib (13) is received by a slot (14) in a cavity (15) in the retaining web (3) of the plaster sealing strip (1) when the latch (20) is closed. [10] Plaster sealing strip according to claim 9, characterized by , that the free edges of the lips (17) next to the slot (14) rest on the inner sides of the wall parts (18, 19) that define the cavity (15) or are spaced away from the inner sides of the wall parts (18, 19). [11] Plaster sealing strip according to one of claims 8 to 10, characterized by , that the lips (17) enclose an angle with each other, in particular an obtuse angle. [12] Plaster sealing strip according to one of claims 8 to 11, characterized by , that the lips (17) are oriented pointing from the free edge of the bridge (16) towards the support (11). [13] Plaster sealing strip according to one of claims 1 to 12, characterized by , that the holding force of the locking mechanism (20) is less than the holding force of the bonding of the second sealing tape (12) to the component. [14] Plaster sealing strip according to one of claims 1 to 13, characterized by , that the locking mechanism (20) releases the support (11) when a force of 30 to 150 N / 10 cm acts on the support (11), preferably a force of 40 to 100 N / 10 cm, particularly preferably a force of 50 to 70 N / 10 cm, especially a force of 60 N / 10 cm along the longitudinal extent of the plaster sealing strip (1).

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