DE19914337A1 - Carpet flooring - Google Patents

Abstract

Floor covering (30) made of carpet, which has a self-adhesive layer (46) on the mesh fabric on the underside. The layer (46) is arranged on the lattice fabric made of the threads (40) fixed in an elastic layer (38) such that essentially only the surfaces (44) of the threads (20) facing away from the elastic layer (38) contribute to the adhesion .

Description

The invention relates to a floor covering made of carpet, which is a self-adhesive Has layer on the bottom.

Carpets are usually laid in that on the surface, for example a cement floor, liquid adhesive material is applied, with which the carpet is then glued.

A carpet product is known from EP-104 305 which is already on its underside has an adhesive layer provided with a peelable film at the factory has been.

On site, the carpet is re-laid on a suitably prepared floor peeled off the protective film immediately.

The carpet arrangement known from the EP document can do such Adhesive layer over the entire surface or also over part of the surface, for example in dots or Have edge areas. Nevertheless, the order areas are either at punctiform arrangement too large or else in the flat Arrangement provided such that relatively large adhesive areas the bottom of the carpet are provided. This has the consequence that after a Sticking the carpet with difficulty releasing the carpet can be done with either adhesive residue directly on the floor remain or screed masses and the like are removed from the floor. This results in either partial destruction of the carpet and a  Remaining of the adhesive that has to be removed from the floor again, or else destruction of the soil surface itself.

A carpet flooring is from German utility model 79 04 079 known that a walking layer on the top and a soft on the bottom Has foam back. Such a path is not for the object area, i. H. For a heavily used area (offices, public buildings and the like) can be used because a foam backing as a stabilizing layer for those high areas is unsuitable.

The well-known carpet flooring is now supposed to be connected to a network Permanently elastic adhesive is provided to be coated on the underside this carpet sheet firmly on the floor, but reversible for removal to stick.

A different carpet construction is used for heavily used areas, in which the top-side textile pile layer on its underside stabilizes dimensions becomes. For this purpose, a rubber-like coating, usually a latex layer, applied to the textile underside, in which a dimensionally stable net-like Tissue is inserted. The fixation of this stabilizing tissue within the rubber-like layer, which also contributes to stabilization, now gives this Carpet covering the stabilizing properties in the contract area are desired. However, such carpeting must usually be on the Glued floor or braced at the edge area, which the aforementioned Causes problems.

The invention is therefore based on the object of a floor covering To further develop carpets for the contract area in such a way that they are not large Laying effort stably laid and practically without destroying the subsurface can be removed again.  

The problem is solved by carpeting with the Features of claim 1.

Surprisingly, the carpeting according to the invention is both easy laying as well as off the floor after a long period of use subtract d. H. the carpet with the self-adhesive coating remains essentially intact when peeling and takes no cement flooring components, especially screed components when removing with. On the other hand, however, remains but there is practically no hot melt adhesive on the floor even when peeling off.

According to the invention, a carpet which is already known for the contract area, the one on the top a pile layer and already on the bottom one Has latex layer with an embedded textile stabilization network, with a Provide adhesive layer such that largely only the outer surfaces of the Fabric can be used for gluing. The intermediate areas of the However, fabrics that are partially filled with the adhesive layer wear largely not for gluing. As a result, the Adhesive layer largely only on the outer surface of the thread that the reticulate fabric in weft and warp forms. So there is no impregnation of the Thread and therefore no interaction of the adhesive with the latex layer that might be disadvantageous. In particular, the Do not apply the adhesive layer to the textile top layer. . The same can also Adhesive layer does not damage the foam backing of a carpet spell, as is the case with the web according to DE-GM, in which the carpet on Surface-fixing adhesive layer can also peel off the foam layer, if the carpet "wanders", d. H. is pushed sideways.

Surprisingly, the arrangement according to the invention can be used with a Tuffing layer on the top, a latex intermediate layer and a textile net-like stabilization layer on the bottom together with the partial  Lay the adhesive application particularly well on the threads of the net-like fabric, since only a polymeric protective film covering the adhesive layer is peeled off must be to the carpet by means of an adhesive layer on the surface fix. A carpet fixed in this way can - in contrast to the Usually glued carpets - from the Soil are removed, which has the consequence that the subsurface, in particular the screed layer, remains essentially unharmed. As a result, too practically no repairs to the screed after removing the invention Carpeting.

It should be noted that the carpet according to the invention on the one hand also by one Non-specialist quickly and without further adhesive application cut and after Peeling off the film can be glued, but on the other hand also without major Problems can be disposed of. After all, shouldn't be neglected either be that the given when filling the floors with a liquid adhesive Vapors are unnecessary when using the carpet according to the invention, so that neither the installation staff nor the later users of the with the Carpeted room adversely affected by such adhesive vapors to be influenced.

The carpet according to the invention is factory-made with the adhesive layer, in particular provided a hot melt adhesive on which a protective film a polymer is applied, which can be easily peeled off on the application side.

Due to the partial application of adhesive to the outer surfaces of the threads of the The area responsible for the gluing is based on the mesh fabric the total area of the back about 40-75%, preferably about 50-70%. This one Areas are only grid-shaped (net-shaped), one is missing continuous cohesion of the adhesive surfaces, so that compared to one uniform adhesive surface a significantly improved peel behavior of such  manufactured carpet is achieved without, however, the entire bond is disadvantaged.

The combination of the adhesive layer with the is particularly advantageous stabilizing network, on the one hand in the elastomeric layer (e.g. latex layer) is anchored and on the other hand as an adhesive surface for the textile carpet flooring serves. Only this combination grants the carpet desired high laying stability, what with an additionally glued on net has previously been completely soaked with adhesive, cannot be achieved because such a glued carpet is still unstable, d. H. wanders.

To lay the carpet, it only has to be opened in the usual way a prepared clean floor, which may be leveled with filler has been spread out, then making the appropriate adjustment measures (cutting out corner areas and the like) have to. If the carpet is then adapted to the room accordingly been, the protective film can then be removed so that the Adhesive effect between the underside of the carpet and the top of the Floor can take place by stepping on the publisher. To an optimal It is then only necessary to achieve adhesion between the floor and carpet an even pressure load, for example with a pressure roller or through the carpet installer mentioned.

A carpet laid in this way according to the invention lies with the same Quality on the floor, like one attached with a separate glue Carpet, however, is much cheaper and easier to install than carpets without adhesive coating, using pressure sensitive adhesive from a carpenter must be applied to the floor, attached. In this respect, the Carpet according to the invention is particularly good for do-it-yourselfers.  

The mesh fabric to be used according to the invention is usually already included Carpets on the underside are fixed in the elastomeric coating and are preferably made in plain weave.

The diameter of the grid threads in a circular cross section lies in practice between 0.5 and 1.5 mm, preferably at about 0.6-0.9 mm, the Diameter of weft and warp threads can be different. Usually between 25 and 35 threads per 10 cm are processed in the fabric.

There is a free area between the grid threads, the individual Lattice threads, seen in the parallel direction, preferably between 1 and 3 mm, preferably are spaced approximately between 1.5 and 2 mm apart. Here must be taken into account that the threads through during the carpet production Rolling from a circular cross section into an almost rectangular one Cross-sectional shape "flat" can be pressed, so that the total Change thread / space surface ratios to the disadvantage of the latter.

With an appropriate choice of the lattice construction, this leads according to the invention to that 25-60% of the total area of the grid is accounted for by the thread-free spaces, preferably about 30-50% of the grid area from the spaces is taken.

The adhesive coating material can spread over the entire grid surface extend, which is located in the spaces between the grid threads Material essentially does not participate in the adhesion to the floor.

The essential part of the self-adhesive is therefore preferably located Material on the thread surface, d. H. that part of the thread surface that is facing the floor. This part is usually at least 1/4, preferably 40-75% of the total surface of the back of the Carpeting. Because of the pressure on the carpet, the  Thread surface "broadly rolled", so that this thread area as a whole on the Liability participates.

According to an advantageous embodiment, the proportion of the self-adhesive is de Coating for the total mesh area showing the adhesion 40-75% of the Total grid area, preferably 50-70% total grid area (calculated from Thread surface plus thread space).

Hot melt adhesives based on acrylate or EVA can be used as a material for coating the mesh. The application amount is usually between 50 and 150 g, preferably about 70-100 g per m ^{2 of} total area, this total area practically corresponding to the thread surface of the grid.

Compared to a full-surface adhesive application, such as from the EP-104 305 or the laying technology in automobile construction is known, the inventions Grid-shaped adhesive arrangement according to the invention, which is linear in the form of 2 axes is formed over the entire underside of the carpet, the advantage that only a line-like adhesion has to be removed while peeling off, while with the full-surface or in certain areas full-surface adhesive wearing larger areas must be deducted, reducing the risk of detachment the back of the carpet or the screed layer of the floor.

The drawing explains the invention.

Show it:

Fig. 1 is a view from below of a first embodiment of a carpet floor covering,

Fig. 2 shows a section along the line II-II through the carpet flooring according to

Fig. 1, wherein only two threads of the lattice fabric are shown enlarged in section, and

Fig. 3 shows a section similar to that of Fig. 2 through a second embodiment of carpet flooring.

In Fig. 1, a carpet flooring 10 is shown in detail, seen from below. This carpet flooring 10 has a grid fabric 12 which is applied to the back of the rest of the carpet, for example by gluing.

The lattice fabric 12 has warp threads 14 and weft threads 16 arranged at regular intervals, intermediate regions 18 being formed between the warp threads 14 and the weft threads 16 and being free of threads or thread edge regions.

As can be seen from FIG. 2, a layer 20 of an adhesive, advantageously hot-melt adhesive, is provided on the upper side of the threads 14 , 16, which layer covers the surface of the thread at least 1/4, advantageously between 40 and 50%.

According to a first embodiment, as shown in FIG. 2 only on the threads 16 , the coating 20 is practically only provided on the thread surface.

According to a further embodiment, a further part of the coating 22 , as shown in dashed lines in FIG. 2, is located partially or completely in the space 18 between the threads 16 and 18 , but is not planar with that through the grid fabric 12 and the partial coating 20 formed total surface of this grid arrangement. This is apparent from Fig. 2 in that the partial coating 22 is formed sagging, so that it can not participate in the adhesion of the grid to a floor, not shown. This type of intermediate coating 22 , in whole or in part, in the intermediate region 18 can result from the production point of view, but is less preferred than the embodiment which has a surface coating 20 on the warp thread 14 and the weft thread 16 .

Otherwise, the remaining part of the carpet flooring 10 (with back, pile and the like) is shown in FIG. 2 at 24.

Furthermore, a peel-off film is shown schematically at 26 , which is attached for protection purposes on the coated mesh fabric 12 , so that the carpet 10 can be rolled up.

FIG. 3 shows a further embodiment of a carpet floor covering 30 in an enlarged cross section, its view from below corresponding to that of FIG. 1, so that reference is made to this.

The carpet flooring 30 has a carpet carrier 32 of a textile nature, into which pole material 34 is inserted. The back 36 of the carpet support 32 is provided with a coating 38 made of an elastomeric material, advantageously latex. This coating 38 gives the carpet 30 a high tensile stability. The latex application is usually between 900-1200 g / m ² .

Instead of latex, other elastomeric materials, for example polyurethane, EPM or EPDM coatings, can be provided which have the same elastic properties as latex. The directional stability of the carpet flooring 30 is improved in that a mesh fabric is inserted into the coating 38 , only the warp or weft threads 40 of the mesh fabric in FIG. 3 being shown in section.

Advantageously, the grid has approximately 28-32 weft and warp threads each 10 cm, which are each approximately between 0.6 and 0.8 mm thick. In Fig. 3 the threads with a circular cross section are shown idealized. In the real case, however, the threads are squeezed by a calender treatment and take on an essentially oval shape, so that a 0.8 mm thread can become 1.3 mm wide in cross section. In this respect, the hemispherical outer surface of the thread merges into an almost flat outer surface.

Such a flattened thread structure is shown at 42 in FIG. 3.

The elastomeric layer 38 facing away from the outer surface 44 of the thread 40/42 is provided with an adhesive layer 46th The outer surface 44 extends at least over half of the outer periphery of the yarn 40/42, more than half of the total surface of the thread that 40/42 is embedded in the elastomeric layer 38th To that extent, the entire outer surface 44 of the non-embedded thread 40/42 adhesive function due to the adhesive layer 46th A tough, acrylic-based adhesive with a viscosity of about 17 seconds is advantageous, measured using the "Ford" method in a 6 mm beaker.

The amount of coating is about 85 g / m ^{2 of} adhesive per carpet back.

To improve handling of the carpet flooring, it is provided on the back with a release film 48 which has the same function as the above-mentioned release film 26 . In the same way, the lattice fabric composed of the warp / weft threads 40 is identical in function to the lattice fabric 12 mentioned above.

To lay the carpet 30 , a cut is first made according to the floor arrangement. Then carpet is rolled out in the room and then the peel-off film is peeled off from the edge. The carpet can then be glued to the floor by treading or rolling.

Such carpet flooring 30 is dimensionally stable and is also suitable for rooms with high loads, such as offices, entrance halls and the like.

The material of the mesh is not critical and usually consists of threads, which is composed of a variety of multifilaments polymeric material are. Any polymeric material used in the manufacture of Flooring materials used are used, for example Polyethylene, polypropylene, polyester, polyamide or the like.

A melt adhesive has proven to be advantageous as the material for the adhesive layer proven, for example based on polyurethane, acrylate or EVA.

Claims (9)

1. Floor covering ( 10 , 30 ) made of carpet with a self-adhesive coating ( 20 , 22 , 46 ) on the underside, which has a mesh fabric ( 12 ), the self-adhesive coating ( 20 , 46 ) on the outer surface of the mesh fabric ( 12 ) is arranged and essentially only the areas ( 44 ) of the self-adhesive coating ( 20 , 46 ), which are applied to the thread surfaces ( 44 ) of the lattice fabric ( 12 ), contribute to the adhesion. 2. Floor covering according to claim 1, characterized in that the carpet covering ( 30 ) has a carpet support ( 32 ) with a pole layer ( 34 ) on the top and on the back ( 36 ) has a layer ( 38 ) made of an elastomeric material in which the mesh fabric is fixed with the threads ( 40 ). 3. Floor covering according to claim 1 or 2, characterized in that the grid fabric ( 12 ) is made in plain weave from weft and warp threads ( 14 , 16 ; 40 ). 4. Floor covering according to one of claims 1 to 3, characterized in that the diameter of the grid threads ( 14 , 16 ; 40 ) is between 0.5 and 1.5, preferably approximately 0.6-0.9 mm. 5. Floor covering according to one of claims 1 to 4, characterized in that the distance between the grid threads ( 14 , 16 ; 40 ) from each other is about 1-3 mm, preferably about 1.5-2 mm. 6. Floor covering according to one of claims 1 to 5, characterized in that the coating ( 46 ) 40-75, preferably 50-70% of the total area of the back ( 36 ) in the form of the grid coating ( 20 , 46 ) covers. 7. Floor covering according to one of claims 1 to 5, characterized in that the intermediate region ( 18 ) between the grid threads ( 14 , 16 ; 40 ) is substantially free of the self-adhesive coating. 8. Floor covering according to one of claims 1 to 6, characterized in that about 50-150 g / m ^{2 of} adhesive are applied to the underside of the floor covering ( 10 , 30 ). 9. Floor covering according to one of claims 1 to 10, characterized in that the adhesive is a tough elastic adhesive.