EP1375780A1 - Panel- or web-shaped material of a plastic substance for supporting tile coverings - Google Patents

Abstract

The extruded strip or sheet(10) has spaced parallel ribs(18) extending in the extrusion direction with channel-like recesses(22) between them. material has on at least one side spaced parallel rib like projections with channel-like recesses between them. Plastic material used in production of the strip is elastic under bending, tension or compression conditions when solid. In a first design the ribs(18) project from the upper side of a strip(10) which is flat on the underside. In a second design ribs also project from the underside. Underside ribs are either aligned with those on the upper side or are offset from them transverse to the extrusion direction so that they align with the channels(22) on the upper side. Outer faces(16) of ribs are flat while the underside of the strip has a surface structure, e.g. grooves, sand or fibers, which enhances adhesion to a mortar or adhesive applied to the solid ground. Ribs have a trapezium cross-section with the narrow base facing downwards and adjacent channels are tapered inwards towards their open mouth. Alternatively ribs have a trapezium cross-section with the broader base at the bottom and adjacent channels have a cross-section broadening towards the open mouth. In a further design the ribs have a drop-shaped cross-section at their free ends with a narrow perpendicular rib connected to the strip or sheet body. A woven fabric mesh(24) laid on the upper side of the strip material during laying of the latter reinforces a mortar or adhesive layer applied before laying tiles on top. The mesh can be loosely laid or bonded. The strip is permeable to water vapor and may also be perforated to allow passage of moisture. Channels may also be formed transverse to the extrusion direction and break through into the channels running in the extrusion direction.

Description

The invention relates to an arrangement between a solid supporting surface and a walkable covering to be arranged on this, preferably a sheet or tile covering certain sheet or sheet material made of plastic, which protrudes from at least one of its flat sides, spaced apart parallel rib-like projections, between which channel-like depressions are formed.

When laying slab or tile coverings on solid substrates, e.g. if necessary, concrete floor slabs covered with a screed layer, between the floor slab or the screed and the one to be applied Slab or tile covering intermediate layers of such slab or Sheet materials are provided which are used for thermal insulation or for reduction serve to transmit impact sound. Outside, i.e. for balconies or terraces, which atmospheric influences and therefore also Such interlayers are exposed to rainwater then also as drainage layers for the removal of over the joints of the covering penetrating rainwater provided.

To a certain extent, the intermediate layer also decouples of the substrate from the covering such that different longitudinal or transverse strains there is no cracking in the base between the surface and the base being able to lead. To order the known intermediate coverings, for example that known from EP 0 893 553 B1, mainly for draining in Profiled sheet laid outside areas also provided a profiled sheet To ensure decoupling of the slab covering from the concrete support slab, the profile sheet was often not firmly adhered to the concrete slab, so that there are differences in tension between the slab and the subfloor due to a local shift of the web material on the ground could be compensated and thus crack formation in the plate covering avoided becomes. In practice it has now been shown that with such a decoupling of the tile covering from the subsurface acoustically gives the impression can, as if voids between the paving and the floor slab exist. This results in processors as well as users emotionally the impression of lack of stability.

The invention is based on the object, a between one solid surface, e.g. a concrete floor slab or a screed and one Specify sheet or sheet material to be arranged which when laying both firmly adhering to the subfloor and to the Tile can be connected, but is able to between horizontal stresses occurring on the slab surface and the subsurface dismantle, i.e. to decouple the paving from the ground and so one Prevent cracking in the paving. Which in practice with non-sticking with observed intermediate coverings connected to the subsurface Disadvantages should be largely avoided.

Starting from a sheet or plate material of the type mentioned This object is achieved in that the train or Sheet material in the extrusion process with extrusion direction web-like or rib-like projections and channel-like projections formed between them Wells from a bend in a cooled state as well tensile / pressure elastic plastic material is made. Deviating from known ones Intermediate materials, where the profiling through subsequent Hot forming of rigid plastic films that are flat in the initial state is generated which have no tensile or compressive elasticity in itself, is not produced by the production according to the invention in the extrusion process only flexible, but also tensile and compressive plastic material Possibility of minor horizontal displacements of the Slab coverings relative to the subsurface due to deformation in the used track or Dismantle plate material so that - despite the adhesive connection of the Material with both the surface and the top - no cracking transverse stresses of inadmissible heights occur in the plate material. Due to the elasticity of the material, it is also usually required impact sound insulation guaranteed.

In a first exemplary embodiment, the configuration is such that that the web-like or rib-like projections from the top of one on the Step forward on the underside of a substantially flat sheet or sheet material layer.

Further web-like or rib-like projections can also be seen from the bottom of the essentially flat sheet or sheet material layer.

The configuration can be such that the bottom protruding web or rib-like projections with those from the top protruding web or rib-like projections are aligned.

Alternatively, the web-like or rib-like protruding from the underside Projections relative to the web-like or rib-like protruding from the top Projections can also be offset transversely to the extrusion direction in such a way that them with those between the web-like or rib-like protruding from the top Projections formed channel-like depressions are aligned.

In a further development according to the invention, also in the range of Above protruding web or rib-like projections in the bottom of the sheet or sheet material running in the extrusion direction channel-like Recesses are provided which not only reduce the material consumption, but also improve cross-elasticity.

The web or rib-like projections expediently each have an Mainly flat end face on a flat support of the plate covering or to obtain a flat support on the ground. Thereby not only the weight loads acting on the slab surface safely transferred to the underground, but also the liability bond between the surface or the underside of the paving and the sheet or plate material is enlarged over the mortar or adhesive used, and the ability to withstand the transverse stresses that occur without shearing record, increased.

It may be expedient if the planar ones facing the surface Areas of the web or plate material with the adhesive connection a mortar or adhesive layer applied to the surface Have surface structure.

In this context, for example, an embodiment is advantageous, in which the flat areas of the railway or Plate material a roughened, preferably in the direction of extrusion extending grooves have formed surface structure.

As an alternative or in addition, the flat surface facing the underground can be used Areas of the web or plate material also the adhesive connection Increasing coating of firmly adhering particles, preferably Sand particles or fibers.

The web-like or rib-like projections can be in an advantageous embodiment the invention at right angles to the direction of extrusion a cross-section in shape have a trapezoid with the narrower base facing down, whereby the formed between the web or rib-like projections channel-like depressions a towards their free and tapering Cross section. Because of this dovetail design the channel-like depressions become a secure positive and material connection of the paving with the sheet or sheet material over the used Adhesive mortar or adhesive reached.

Alternatively, the web-like or rib-like projections can be transverse to the direction of extrusion also the cross section from with its narrower end face to the outside have pointing trapezoids so that those formed between the protrusions channel-like depressions extend from their bottom surface to the open mouth have a widening cross-section.

In a further modified embodiment, the configuration be made so that the web-like or rib-like projections are transverse to the direction of extrusion one thickened like drops at its free ends and over one in the horizontal transverse direction narrower vertical web section integral cross section attached to the web material.

If such web or rib-like projections on the top and bottom are provided, it is recommended that those protruding from the top web or rib-like projections relative to those protruding from the underside web-like or rib-like projections to one another transversely to the direction of extrusion to be staggered.

In the web or rib-like protruding from the top and / or bottom Projections can then also be spaced apart in the direction of extrusion slots or channel-like recesses running transversely to the direction of extrusion be incorporated in addition to that due to the shape of the rib-like Projections also achieved a transverse elasticity of the web material give improved longitudinal elasticity.

It can be advantageous if a when laying the walk-on slab surface to be placed on top of the sheet or sheet material Mesh fabric is provided, which is a reinforcement of the on fixing mortar to the covering or sheet material to be applied or adhesive.

The mesh fabric can either be loose on the top of the web or Plate material placed on top or on top of the sheet or plate material be adhered.

Especially when the tile covering is laid early on a previously laid one and if the screed has not yet dried through, it is recommended to make the sheet or plate material permeable to water vapor diffusion.

In addition to using due to its chemical and / or physical Properties that are permeable to water vapor permeable plastic material Web or plate material also alternatively or additionally at least in some areas with perforations allowing water vapor to pass through be carried out after the actual extrusion process of the material can be produced between spiked rollers.

In the case of the sheet or plate material, which is in the bottom with the extrusion direction running channels is provided, the passage of water vapor from the bottom to the top are also guaranteed that in the web-like or rib-like projections protruding from the top Slit or channel-like recesses running transversely to the direction of extrusion are incorporated, the depth of which is so dimensioned that they extend into the Go through the provided channel-like depressions on the underside.

Fig. 1

einen Abschnitt eines ersten Ausführungsbeispiels eines erfindungsgemäßen, im Extrusionsverfahren hergestellten Kunststoff-Bahnmaterials in dreidimensionaler Darstellung, wobei oberhalb des Bahnmaterials ein zusätzlich zur Armierung eines aufgebrachten Kleber- oder Mörtelbelags vorgesehenes Gittergewebe angedeutet ist;

Fig. 2

eine Schnittansicht durch einen Abschnitt eines auf einer Beton-Grundplatte aufgebrachten Fliesenbelags, wobei zwischen einem auf der Beton-Grundplatte vorgesehenen Estrich und der Unterseite der Fliesen ein Bahnmaterial der in Fig. 1 gezeigten Art vorgesehen ist ;

Fig. 3

eine perspektivische Darstellung eines Ausschnitts eines gegenüber dem in Fig. 1 gezeigten Bahnmaterial durch zusätzliche in der Unterseite vorgesehene kanalartige Vertiefungen weitergebildeten Bahnmaterials ;

Fig. 4

eine der Fig. 3 entsprechende Ansicht eines erfindungsgemäßen Bahnmaterials, bei welchem durch zusätzliche quer zur Extrusionsrichtung in die steg- oder rippenartigen Vorsprünge eingearbeitete Einfräsungen Durchlässe zu den in der Unterseite vorgesehenen kanalartigen Vertiefungen geschaffen sind;

Fig. 5

ein gegenüber dem Bahnmaterial gemäß Fig. 1 abgewandeltes Ausführungsbeispiel des erfindungsgemäßen Bahnmaterials, bei welchem zusätzlich zu den von der Oberseite vortretenden steg- bzw. rippenartigen Vorsprünge auch von der Unterseite entsprechende steg- bzw. rippenartige Vorsprünge vortreten, welche zu den Vorsprüngen der Oberseite fluchten;

Fig. 6

eine Abwandlung des in Fig. 5 gezeigten Ausführungsbeispiels, bei welchem die an der Unterseite vorgesehenen steg- bzw. rippenartigen Vorsprünge relativ zu den von der Oberseite vorstehenden Vorsprünge derart versetzt sind, dass sie zu den zwischen den von der Oberseite vorstehenden Vorsprüngen gebildeten kanalartigen Vertiefungen fluchten ;

Fig. 7

ein gegenüber dem Ausführungsbeispiel gemäß Fig. 3 abgewandeltes Ausführungsbeispiel, bei welchem die von der Oberseite vortretenden Vorsprünge eine sich nach oben trapezförmig verjüngende Querschnittsform haben;

Fig. 8

das Ausführungsbeispiel gemäß Fig. 7 mit den zusätzlich vorgesehenen quer verlaufenden Einfräsungen entsprechend dem Ausführungsbeispiel gemäß Fig. 4;

Fig. 9

ein weiter abgewandeltes Ausführungsbeispiel, bei welchem die von der Oberseite vortretenden Vorsprünge in Übereinstimmung mit den Ausführungsbeispielen gemäß den Figuren 1, 5 und 6 eine sich nach oben trapezförmig verjüngende Querschnittsform haben, während die zur Unterseite vortretenden Vorsprünge die Form von im Querschnitt an ihren freien Enden tropfenartig verdickten, über einen in horizontaler Querrichtung schmaleren senkrechten Stegabschnitt integral am Bahnmaterial angesetzte Rippenvorsprünge haben; und

Fig. 10

eine Abwandung des Ausführungsbeispiels gemäß Figur 9, bei welchem auch die von der Oberseite vortretenden Vorsprünge die Querschnittsform der in Längsrichtung verlaufenden, an ihren Enden tropfenartig verdickten Rippenvorsprünge haben.

The invention is explained in more detail in the following description of several exemplary embodiments in conjunction with the drawing, which shows:

Fig. 1

a section of a first embodiment of a plastic web material according to the invention, produced in the extrusion process, in a three-dimensional representation, above which a mesh fabric provided for reinforcing an applied adhesive or mortar covering is indicated;

Fig. 2

a sectional view through a portion of a tile covering applied to a concrete base plate, a web material of the type shown in FIG. 1 being provided between a screed provided on the concrete base plate and the underside of the tiles;

Fig. 3

a perspective view of a section of a web material further developed compared to the web material shown in FIG. 1 by additional channel-like depressions provided in the underside;

Fig. 4

3 a view corresponding to FIG. 3 of a web material according to the invention, in which passages to the channel-like depressions provided in the underside are created by additional milled recesses machined transversely to the direction of extrusion into the web-like or rib-like projections;

Fig. 5

1 modified embodiment of the web material according to the invention, in which in addition to the web-like or rib-like projections emerging from the top, corresponding web-like or rib-like projections also appear from the bottom, which are aligned with the projections of the top;

Fig. 6

a modification of the embodiment shown in FIG. 5, in which the web-like or rib-like projections provided on the underside are offset relative to the projections protruding from the top in such a way that they are aligned with the channel-like depressions formed between the projections protruding from the top ;

Fig. 7

an embodiment modified in relation to the embodiment according to FIG. 3, in which the projections protruding from the upper side have a cross-sectional shape which tapers upwards in a trapezoidal shape;

Fig. 8

the embodiment according to FIG. 7 with the additionally provided transverse milling in accordance with the embodiment according to FIG. 4;

Fig. 9

a further modified embodiment in which the protrusions protruding from the top in accordance with the embodiments according to Figures 1, 5 and 6 have a trapezoidally tapering cross-sectional shape upwards, while the protrusions protruding towards the bottom have the shape of in cross section at their free ends have drop-like thickened rib projections integrally attached to the web material via a vertical web section narrower in the horizontal transverse direction; and

Fig. 10

a variant of the embodiment of Figure 9, in which also the protrusions protruding from the top have the cross-sectional shape of the longitudinally extending rib projections thickened at their ends like drops.

In Fig. 1 is a section of an extrusion process from plastic granules produced web material 10 with a flat underside 12 shown, from its opposite surface 14 laterally from each other spaced, in the direction indicated by the arrow E extrusion running and in turn on the top 16 flat web or step rib-like projections 18. The lateral stripe-shaped low boundary surfaces 20 of the projections 18 are each on opposite Pages so diagonally from bottom to top inclined that the channel-like formed between the projections 18 Recesses 22 have a dovetail cross section.

It is essential to the invention that the web material 10 is not too small Wall thickness is made of a plastic raw material, which after cooling after the extrusion process is not only flexible at ambient temperature, but also has compressive and elastic properties.

A glass mesh fabric 24 is located above the web material 10 in FIG. 1 schematically indicated, which is used to reinforce a laying a slab or tile covering on the top of the web material 10 used for the adhesive connection of the tiles with the sheet material 10 Tile adhesive or mortar is used.

The flat underside 12 of the web material 10 can with a Adhesion-increasing surface structure. In Fig. 1 this is indicated by a dotted sanding layer 26, the Sand particles adhering in a suitable manner to the underside 26 are connected.

In Fig. 2 is a screed layer in section on a concrete base plate 30 32, on which that described in connection with FIG. 1 Web material 10 applied by means of a thin adhesive layer 34 is.

On the top of the web material 10 is a layer 36 of a tile mortar applied or adhesive, in which the glass mesh 24 is introduced as reinforcement. The tiles 38 are over the tile mortar firmly adhered to the top of the web material 10. The joints between the tiles 38 are then also in the usual way grouted by means of a porous setting grout 40.

In the following figures, each is compared to the Web material 10 more or less modified embodiments shown. To avoid repetitions, therefore, are below only in the respective embodiments compared to the 1 or previously in connection with others Drawings described exemplary embodiments made changes described. For the matching design features can, however, refer to the preceding description become, especially since functionally matching features of the different Embodiments in all drawing figures the same reference numerals assigned.

The web material 10 shown in FIG. 3 differs from the exemplary embodiment 1 only in that aligned in the middle to the web-like or rib-like projections 18 protruding from the upper side channel-like depressions 42 are provided in the underside, which in vertical direction have a slightly larger clear height than the thickness of the web material in the area between the projections 18 channel-like depressions 22 formed.

In contrast, the embodiment shown in FIG. 4 differs only by being perpendicular to the longitudinal extension of the channel-like Recesses 22 milled 44 the projections 18 cut through, creating the channel-like open at the bottom Indentations 42 in the area of this milling 44 connection have to the top of the web material 10.

The web material 10 shown in FIG. 5 differs from that 1 in that aligned to the web or rib-like projections 18 corresponding projections to the top 46 are provided on the underside, between which then also again in cross-section dovetail-shaped open at the bottom channel-like depressions 48 are formed.

The web material illustrated in FIG. 6 also points from the top and web-like or rib-like projections 18 and 46 protruding from the underside each with channel-like depressions 22 and 48 lying between them on, the projections 46 provided on the underside being such laterally offset from the projections 18 provided on the upper side are arranged so that they are aligned below the channel-like depressions 22 run.

In Figures 7 and 8 are those described in connection with Figs. 3 and 4, respectively Sheet materials 10 related sheet materials 10 are shown which differ from the web materials already described in that that the strip-shaped lateral boundary walls 20 of the protrusions 18 appearing above with opposite sense of inclination approach each other from the bottom up so that the between the Projections 18 formed channel-like depressions 22 a from the lower flat bottom surface 14 upward widening cross section to have. In the embodiment shown in Fig. 8 are again machined transversely to the extrusion direction E by the projections 18 Milled 44 shown that the provided in the bottom Connect channel-like depressions 42 to the top.

The embodiment shown in Figure 9 differs from that 5 illustrated embodiment in that the of the web-like or rib-like projections appearing on the underside are not the correspond to projections 18 protruding from the top in cross section, but instead as a larger number of longitudinal ends Rib projections 46 are formed on the underside have a drop-like thickened shape at their free end, which via a thinner web-like connecting section is connected to the web material 10. It can be seen that these rib projections 46 transversely to the direction of extrusion E, a higher elasticity have than the more massive protrusions protruding from the top 18th

In the exemplary embodiment according to FIG. 10, those are also on the top provided web or rib-like projections corresponding to the in FIG. 9 is formed only from projections 46 protruding from the underside, so that here both the transverse elasticity of that of the top and of the Bottom protruding ribs is significantly increased.

In the two last-described exemplary embodiments according to FIG 9 and 10 can also be the longitudinal elasticity in the extrusion direction still be increased if transverse to each other from the extrusion direction spaced mills or cutouts (not shown) incorporated become.

Claims (21)

For the arrangement between a solid load-bearing surface and a walk-on covering to be arranged thereon, preferably a sheet or tile covering certain sheet or plate material (10) made of plastic, which has at least one of its flat sides, spaced-apart, parallel web-like or rib-like projections (18) , between which channel-like depressions (22) are formed,
characterized in that the web or plate material (10) is produced in the extrusion process with web-like or rib-like projections (18) running in the extrusion direction and channel-like depressions (22) formed between them from a plastic material which is flexible in bending and also tensile / compressive in the cooled state is. Web or plate material according to claim 1, characterized in that the web or rib-like projections (18) protrude from the top of a substantially flat surface web or plate material layer. Web or plate material according to claim 2, characterized in that further web or rib-like projections (46) protrude from the underside of the substantially flat web or plate material layer. Web or plate material according to claim 3, characterized in that the web-like or rib-like projections (46) projecting from the bottom are aligned with the web-like or rib-like projections (18) emerging from the top. Web or plate material according to claim 3, characterized in that the web-like or rib-like projections (46) emerging from the underside are offset relative to the web-like or rib-like projections (18) emerging from the upper side in such a way transversely to the direction of extrusion (E), that they are aligned with the channel-like depressions (22) formed between the web-like or rib-like projections (18) protruding from the upper side. Web or plate material according to one of claims 2 to 5, characterized in that in the region of the web-like or rib-like projections (18) protruding from the upper side, channel-like depressions (42) are provided in the underside of the web or plate material in the direction of extrusion. Web or plate material according to one of claims 1 to 6, characterized in that the web-like or rib-like projections (18; 46) each have a substantially flat end face (16). Web or plate material according to claim 7, characterized in that the flat areas of the web or plate material (10) facing the substrate have a surface structure which increases the adhesive connection with a mortar or adhesive layer applied to the substrate. Web or plate material according to claim 8, characterized in that the flat areas of the web or plate material (10) facing the substrate have a roughened surface structure, preferably formed by grooves running in the extrusion direction Web or plate material according to claim 8 or 9, characterized in that a coating (26) of firmly adhering particles, preferably sand particles or fibers, is applied to the flat areas of the web or plate material (10) which face the substrate , Sheet or plate material according to one of claims 1 to 10, characterized in that the web-like or rib-like projections (18) at right angles to the extrusion direction (E) have a cross section in the form of a trapezoid with the narrower base side pointing downwards, as a result of which the between the web-like or rib-like projections formed channel-like depressions have a cross section tapering towards their free mouth. (Fig. 1 to 6) Web or plate material according to one of claims 1 to 10, characterized in that the web-like or rib-like projections (18) transverse to the extrusion direction have the cross-section of trapezoids with their narrower end faces outwards, so that the between the projections (18) formed channel-like depressions (22) have a cross section widening from their bottom surface to the open mouth. (Figs. 7 and 8) Web or plate material according to one of claims 1 to 10, characterized in that the web or rib-like projections (18; 46) transversely to the direction of extrusion thickened like drops at their free ends and integrally on the web material via a narrower vertical web section in the horizontal transverse direction ( 10) have the cross section attached (FIGS. 9 and 10). Sheet or plate material according to claim 13, characterized in that web or rib-like projections (18; 46) protrude from the top and the bottom, and that the web or rib-like projections (18) protruding from the top relative to those from the bottom protruding web or rib-like projections (46) are offset from one another transversely to the extrusion direction (E) (FIG. 10). Sheet or plate material according to claim 13 or 14, characterized in that slits or channel-like recesses which are spaced apart from one another in the extrusion direction and run transversely to the direction of extrusion are incorporated into the web or rib-like projections (18; 46) protruding from the top and / or underside. Web or plate material according to one of claims 1 to 15, characterized by a grid fabric (24) provided on the top of the web or plate-shaped material (10) when laying the walkable covering, which reinforcement of the on the web or plate material to apply covering of fixing mortar or adhesive. Web or plate material according to claim 16, characterized in that the grid fabric (24) is provided loosely on the top of the web or plate material (10). Sheet or plate material according to claim 16, characterized in that the grid fabric (24) is adhered to the top of the sheet or plate material (10). Web or plate material according to one of claims 1 to 18, characterized in that the web or plate material (10) is designed to be permeable to water vapor diffusion. Web or plate material according to one of claims 1 to 19, characterized in that the web or plate material (10) is provided, at least in regions, with perforations permitting the passage of water vapor. Sheet or plate material according to claim 6, characterized in that in the web-like or rib-like projections (18) protruding from the upper side, slot-like or channel-like recesses running transversely to the extrusion direction (E) are machined, the depth of which is dimensioned such that they extend to pass into the channel-like depressions (42) provided in the underside and extending in the direction of extrusion.

Images