DE212018000116U1 - joint cord - Google Patents

Abstract

Elastic joint cord (10, 20, 30, 40, 50, 60) for arrangement in a joint between two components (B, F), in particular in a joint to a wall plate (F) or bottom plate, characterized in that it is tear-resistant.

Description

The invention relates to an elastic joint cord and a joint construction produced therewith and a method for processing a joint.

From the sanitary sector, it is known to arrange for the sealing of the joint between two components, for example between a wall tile and the upper edge of a shower or bath, in the joint an elastic round cord of foam plastic. The round cord serves primarily as a spacer between the components. The actual sealing of the joint is usually carried out in a later step by applying a permanently elastic sealing material such as silicone in front of the round cord. The problem here is that the silicone joint ages and thereby becomes leaky over time. It then has to be renewed, which is very laborious and time consuming.

Against this background, it was an object of the present invention to provide means for better sealing of joints.

This object is achieved by a joint cord according to claim 1, by a joint structure according to claim 8, and by a method according to claim 10. Advantageous embodiments are contained in the subclaims.

An elastic joint cord according to a first aspect of the invention serves the arrangement in a joint between two components, in particular in a joint to a wall plate or base plate (tile). The joint cord is characterized in that it is tear-resistant.

The property "tear-resistant" of the joint cord according to the invention is determined relative to the (non-existent) tensile strength of known joint cords or round cords which are used in the sanitary sector and are typically made of foam plastic.

The tear strength of the joint cord according to the invention may in particular be at least so great that it has a longitudinal tensile force of more than about 3 N (Newton), more than about 6 N, more than about 10 N, more than about 30 N , more than about 60 N, more than about 100 N, more than about 300 N, more than about 600 N, more than about 1000 N, more than about 5000 N, or even more than about 10000 N endures in the long run without tearing. If the tear strength of the joint cord depends on the length of the tensile member, the above information refers to a piece about 10 cm long of the joint cord (ie, pulling tie cord with oppositely directed forces of said sizes at both ends of a 10 cm piece) is not ruptured, but an elastic or plastic length change is permissible). Furthermore, the tear resistance in an otherwise similar construction of the joint cord also depends on its thickness (diameter), with the above information relating to the typical case of a joint cord having a round cross-section of approximately 15 mm ² area.

An alternative quantification of tear strength can be made using the "tensile strength" parameter, which in materials science describes the maximum tensile stress that can occur in a material. In the case of a non-homogeneous cross-section of the joint cord (ie if it is composed of two or more components, for example), the tensile strength should be understood as an average over the cross-section and the materials involved. Having said this, the tear strength can also be characterized by the fact that the joint cord according to the invention in the longitudinal direction has a (mean) tensile strength of (in each case at least) approximately 0.2 N / mm ² , approximately 0.4 N / mm ² , approximately 0 , 6 N / mm ^2, approximately 2 N / mm ^2, about 4 N / mm ^2, about 6 N / mm ^2, approximately 20 N / mm ^2, approximately 40 N / mm ^2, approximately 70 N / mm ² , 300 N / mm ² , about 700 N / mm ² , or at least about 1000 N / mm ² .

Due to the tear strength of the joint cord, it is easy and reliable possible to remove them in the context of a renovation back out of the joint, especially if it has been room side covered by a sealing material such as silicone. For removal, namely, only an initial piece of the joint cord must be exposed and then pulled, whereupon the entire joint cord is pulled together with sealing material from the joint due to the tensile strength. Subsequently, the joint can be refilled, for example by again a tear-resistant joint cord is used and then sealed with silicone.

The elasticity of the joint cord should be so great that the cord can be processed well, following the course of the joint, and in particular can be inserted by clamping into a narrower joint by clamping.

As the term "string" already indicates, the joint cord typically has a large longitudinal extent compared to much smaller transverse dimensions. In particular, it can extend almost endlessly in the longitudinal direction, with the perpendicular cross-section typically being constant everywhere. This cross section may in particular be circular, but also oval, polygonal or otherwise shaped. For transport, the joint cord can preferably be compactly wound on a roll or prepared as a longitudinal blank.

The joint cord may optionally contain a foam material, for example a known from conventional round cords foam plastic. This can ensure the desired elasticity (in particular in the form of compressibility).

The joint cord may have a homogeneous construction, i. consist of a macroscopically uniform material. Preferably, however, it has a multi-component structure, wherein it contains at least one component which gives it the tensile strength and which is therefore hereinafter called "strength component". The joint cord without the strength component would typically not be tear resistant (or not more tear resistant than known round cords), while conversely the strength component alone is usually already tear resistant. Despite its tear resistance, the strength component should have sufficient elasticity for the joint cord as a whole to have the necessary elasticity for its processing. A high compressibility, however, does not necessarily have to be the strength component, since this property is usually taken over by other components of the joint cord.

There are various possibilities for the geometrical arrangement of strength components and other components, wherein a structure which is constant in the longitudinal direction is generally preferred.

According to a first embodiment, a strength component may be arranged (wholly or partly) inside the joint cord and surrounded by another material. In one implementation of this embodiment, for example, a wire may be embedded in a foam body.

Additionally or alternatively, the strength component may be wholly or partially disposed on the outside of the joint cord. For example, the strength component can extend in the longitudinal direction along the joint cord and, seen from the center axis of the joint cord, cover an angle range between approximately 30 ° and approximately 270 °, preferably between approximately 150 ° and 220 °. In particular, the strength component can also cover an angular range of approximately 180 °, ie one half of the outside. In addition, it is also possible that the entire outer side of the joint cord is covered by the strength component (angular range 360 °), for example when it lies in the form of a jacket around the core of the joint cord.

The material structure of the strength component can be realized in various ways. For example, the strength component may be a wire or contain multiple wires or have a flexible steel shell. Further, the strength component may be a web of fibers, such as metal fibers or plastic fibers, where the term "web" is intended to broadly cover all regular or irregular arrangements of the fibers (i.e., also knits, webs, felts, and the like). The outer surface of the joint cord can basically be designed arbitrarily, for example, completely or partially smooth. According to a further embodiment of the invention, the outer surface of the joint cord may be at least partially adapted for the adhesion of a (permanently elastic) sealing material, in particular for the adhesion of silicone. This can be done for example by a corresponding chemical preparation of the outer surface and / or by a suitable, in particular rough shaping. Preferably, a rough shape may be provided by the above-mentioned fabric of fibers when disposed on the outer surface of the joint cord. In this case, the tear strength of the joint cord can be combined with a good adherence of the sealing material.

• - Ein erstes Bauteil, beispielsweise eine Wand- oder Bodenplatte.
• - Ein zweites Bauteil, beispielsweise eine (zweite) Wand- oder Bodenplatte oder einen sanitären Einbaugegenstand wie etwa eine Badewanne, eine Duschtasse, einen Bodenablauf oder dergleichen, wobei das erste Bauteil und das zweite Bauteil zwischen sich eine Fuge ausbilden.
• - Eine Fugenschnur gemäß einer der oben beschriebenen Ausführungsformen, die in der vorgenannten Fuge angeordnet ist und, diese überbrückend, die beiden Bauteile miteinander verbindet.

According to a second aspect, the invention relates to a joint structure comprising the following components:

• - A first component, such as a wall or floor plate.
• - A second component, such as a (second) wall or floor panel or a sanitary fixture such as a bathtub, a shower tray, a floor drain or the like, wherein the first component and the second component form a joint between them.
• - A joint cord according to one of the embodiments described above, which is arranged in the aforementioned joint and, bridging these, connects the two components together.

According to a development of the described joint construction, a sealing material such as silicone is arranged on (at least) one side of the joint cord. Such an arrangement is usually carried out on the externally accessible / visible space side of the joint or joint cord. The sealing material preferably adheres to the joint cord, for example due to a material connection or a positive engagement in a surface structure of the joint cord.

According to a third aspect, the invention relates to a method for processing a joint between a first component and a second component, which is characterized in that a joint cord according to one of the embodiments described above is arranged in the joint. The arrangement is preferably carried out so that the joint cord closes the gap, ie bridges the gap between the two components and connects the components.

The joint cord, the joint construction, and the method according to the various aspects of the invention are various implementations of the same core idea. Explanations and explanations, which were given for one of these realization, therefore apply mutatis mutandis to the others.

According to one embodiment of the method (after the arrangement of the joint cord in the joint) on one side of the joint cord, a sealing material such as silicone in particular attached, for example by means of a silicone syringe. Preferably, this results in an adhesive connection of the sealing material to the joint cord.

According to another development of the method, the joint cord with the (chemically hardened) sealing material is removed from the joint by pulling on the joint cord. This processing step may serve to prepare for renewal of the joint seal, if necessary, for example due to aging of the sealing material. The extraction of the joint cord can optionally be prepared by the connection of the sealing material is dissolved with those adjacent components, for example by means of a cutter knife.

• 1 einen schematischen Querschnitt durch einen erfindungsgemäßen Fugenaufbau;
• 2 eine Fugenschnur, welche einen Draht im Inneren enthält;
• 3 eine Fugenschnur, welche einen vollumfänglichen Außenmantel aus Drahtgewebe enthält;
• 4 eine Fugenschnur, welche einen sich über ca. 180° erstreckenden Teil-Außenmantel aus Drahtgewebe enthält;
• 5 eine Fugenschnur, welche einen sich über mehr als 180° erstreckenden Teil-Außenmantel z.B. aus Drahtgewebe mit Fischform-Querschnitt hat und welche ohne (links) oder mit (rechts) Füllprofil ausgebildet sein kann;
• 6 eine Fugenschnur, welche einen sich über mehr als 180° erstreckenden Teil-Außenmantel z.B. aus Drahtgewebe mit Ω-Querschnitt hat und welche ohne (links) oder mit (rechts) Füllprofil ausgebildet sein kann;
• 7 eine Fugenschnur, welche einen Außenmantel z.B. aus Drahtgewebe mit Winkel-Querschnitt hat und welche ohne (links) oder mit (rechts) Füllprofil ausgebildet sein kann.

In the following the invention will be explained in more detail by way of example with the aid of the enclosed figures. Showing:

• 1 a schematic cross section through a joint construction according to the invention;
• 2 a joint cord containing a wire inside;
• 3 a joint cord which contains a full outer sheath of wire mesh;
• 4 a joint cord, which contains an over 180 ° extending outer outer shell of wire mesh;
• 5 a joint cord, which has a more than 180 ° extending part outer shell, for example, wire mesh with fish shape cross-section and which may be formed without (left) or with (right) filling profile;
• 6 a joint cord, which has a more than 180 ° extending part outer sheath, for example, wire mesh with Ω-section and which may be formed without (left) or with (right) filling profile;
• 7 a joint cord, which has an outer sheath, for example made of wire mesh with angular cross-section and which may be formed without (left) or with (right) filling profile.

1 shows a schematic cross section through a joint, which in front of a building wall W is formed. On the building wall W are located in the upper area tiles F , which are fixed with a tile adhesive and at a distance of typically five to 10 mm above a built-in object such as a bathtub B end up. The thereby between the installation object B and the tile F The resulting gap must protect against the ingress of water to the building wall W be sealed. This can be done on the one hand by an inserted between the object and tile sealing tape (not shown), as for example in the EP 1 967 107 A2 is described. On the other hand, the seal is made by a permanently elastic sealing material such as silicone S , The silicone S should be fixed to a maximum of two solid surfaces. So that it has a foundation in the joint and does not flow to the wall and glued there, in the joint first an elastic round cord 10 arranged, which the gap between the installation object B and tile F bridged. Subsequently, in front of the round cord in a known manner, the silicone material or the like attached and the joint are sealed so. The tear-resistant round cord is therefore only a flexible filling material, so that the silicone does not migrate in the direction of wall / floor and forms a dreiflankenhaftung.

In this context, the use of specially trained joint cords is proposed according to the invention as "round cord", which on the one hand are elastic (in particular compressible), on the other hand also have a high tensile strength in the longitudinal direction. Should after aging of the silicone S a renewal of the joint will be necessary, so the old material can then be easily removed. After a clean cut through the silicone along the lower tile edge and parallel to the tub surface, the tear-resistant joint cord can be completely removed, taking with it the firmly anchored silicone shreds. The tear-resistant joint cord is an independent, flexible component, and a firm connection with the sealing plane is to be avoided.

The 2 to 7 show in this regard various embodiments of a tear-resistant joint cord.

In the embodiment of 2 contains the joint cord 10 as a strength component a wire 11 which is located inside and made of an elastic foam 12 is sheathed. Such a joint cord can be, for example, by extrusion of the foam 12 around the wire 11 to make around.

At the joint cord 20 from 3 becomes an elastic foam core 22 on the outside completely of a coat 21 surrounded by a tear-resistant material. The material may in particular be a fabric of fibers, for example fibers of metal (eg steel) or plastic (eg PE). An advantage of such an embodiment is that the strength component 21 has a certain roughness, which allows a good adherence of silicone. The fabric may be closed or semi-closed, round, angular or triangular. In particular, an open structure of a steel or plastic fabric provides the silicone with an excellent anchoring surface. When tearing out the joint cord 20 From a joint, therefore, the silicone is reliably taken.

In an alternative embodiment, the joint cord 20 even only from the tear-resistant outer jacket 21 exist, ie no foam core 32 exhibit.

At the joint cord 30 from 4 extends a strength component such as a metal mesh 31 only over an angular range of about 180 ° to about 200 ° (seen from the center of the joint cord) over the circumference of the joint cord 30 whose core in turn is made of a foam 32 consists. In this case, the strength component is arranged in particular to the room side, so that the silicone can adhere to it.

In the 5 . 6 and 7 different embodiments of joint cords are shown in cross-section perpendicular to the longitudinal extent, which are either formed only by the (in this case dimensionally stable) outer sheath of wire mesh (each left figure) or alternatively contain a filling (each right figure), for example made of foam.

The joint cord 40 from 5 has a strength component 41 with a fish-shaped cross-section, ie a pitch circle about 220 ° to 360 ° with adjoining, radially outward-facing ends. Optionally, it can be a foam core 42 contain.

The joint cord 50 from 6 has a strength component 51 with an Ω-shaped cross-section. Optionally, it can be a foam core 52 contain.

The joint cord 60 from 7 has a strength component 61 with an angular cross-section. Optionally, it can be a foam core 62 contain and / or angled ends.

The dimensions and shapes of the illustrated cords are chosen according to the joints to be sealed. Thus, the diameter of the joint cords may typically be between about 1 mm and 50 mm. Other than illustrated, in addition to round cross sections, other shapes may also be used. Furthermore, the joint cord must be so elastic that it can be compressed, compressed, bent and shaped as needed during processing. It should be easily inserted as a spacer in an open joint and deflected.

The tensile strength of the joint cords 10 . 20 . 30 can be quantified, for example, to the effect that a piece about 10 cm long will not break when attached to a weight of X kg (where X = 1, 2, 4, 10, 30, 60, or 100).

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• EP 1967107 A2 [0025]

Claims (11)

Elastic joint cord (10, 20, 30, 40, 50, 60) for arrangement in a joint between two components (B, F), in particular in a joint to a wall plate (F) or bottom plate, characterized in that it is tear-resistant. Joint cord (10, 20, 30, 40, 50, 60) according to at least one of the preceding claims, characterized in that it can withstand a tensile force of at least 10 N, preferably at least 100 N, more preferably at least 1000 N in the longitudinal direction without tearing. Joint cord (10, 20, 30, 40, 50, 60) according to at least one of the preceding claims, characterized in that it contains a foam material (12, 22, 32, 42, 52, 62). Joint cord (10, 20, 30, 40, 50, 60) according to at least one of the preceding claims, characterized in that it contains at least one strength component (11, 21, 31, 41, 51, 61), which gives it the tensile strength. Joint cord (10, 20, 30, 40, 50, 60) after Claim 4 , characterized in that the strength component (11, 21, 31, 41, 51, 61) in the interior of the joint cord (10) is arranged and / or or at least partially on the outside of the joint cord (20, 30, 40, 50, 60 ) is arranged. Joint cord (20, 30, 40, 50, 60) after at least one of Claims 4 or 5 , characterized in that the strength component (21, 31, 41, 51, 61) comprises a fabric of fibers. Joint cord (10, 20, 30, 40, 50, 60) according to at least one of the preceding claims, characterized in that its outer surface is usually partially adapted for the adhesion of a sealing material, in particular of silicone (S). Joint construction, comprising - a first component (F), - a second component (B), which forms a joint with the first component (F); a joint cord (10, 20, 30, 40, 50, 60) after at least one of Claims 1 to 7 , which is arranged in the joint and connects the two components (B, F). Joint construction according to at least one of the preceding claims, characterized in that on one side of the joint cord (10, 20, 30, 40, 50, 60) a sealing material such as silicone (S) is arranged, which preferably adheres to the joint cord. Elastic joint cord (10, 20, 30, 40, 50, 60), which is adapted to be arranged in an existing joint between two components (B, F) behind a sealing material (S), in particular joint cord after Claim 1 , characterized in that it comprises at least one strength component (11, 21, 31, 41, 51, 61) which gives it tensile strength, the strength component (11, 21, 31, 41, 51, 61) being at least partly on the outside the joint cord (20, 30, 40, 50, 60) is arranged, and that it can withstand a tensile force of at least 300 N in the longitudinal direction, without tearing. Use of a tear-resistant joint cord (10, 20, 30, 40, 50, 60) after at least one of Claims 1 to 10 for working a joint between a first component (F) and a second component (B), wherein on one side of the joint cord (10, 20, 30, 40, 50, 60) a sealing material such as in particular silicone (S) is attached.

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