DE19522608A1 - Process coating permeable flooring e.g. slabs or tiles with rubber-polyurethane composite - Google Patents

Abstract

This process treats permeable flooring (1) sections, vis. strips, tiles, slabs, sheets or similar with a rubber-polyurethane composition. In this novel method, the loaded or working surface (1a) is spread (3, 3a) with a flat layer (1b) of a coloured, fusible powder or paste, followed by exposure to heat (6). The molten layer (1b) is then pressed-in mechanically (7a, 7b), to penetrate into the surface of the flooring (1).

Description

The invention relates to rubber-polyurethane composite material existing molded flooring, e.g. B. in the form of web material, Tiles, plates, boards or the like, which water through have a casual structure.

Such shaped floor coverings are e.g. B. already known from DE-B 17 20 059. They are ver for many different areas of application are suitable, but come primarily in Kindergartens, playgrounds, balconies / terraces and Golf courses and also in equestrian facilities.

It is customary in the industry for the rubber-polyu flooring moldings rethane composite material in various dimensions and to manufacture different thicknesses, the different thicknesses be determined by the different purposes.

Because the flooring molded body made of rubber-polyurethane composite material exposed to the weather in most practical applications the most important requirement placed on them is one good water permeability and a sure-footed execution of your stressed surfaces (usable areas) both in dry and in wet condition.  

In order to meet these requirements, it has so far been customary to the claimed surfaces (usable areas) by applying colored EPDM granules to manufacture in several different Colorings are available and therefore also related Requirements can meet.

As a rule, they are made from the colored EPDM granules manufactured surfaces of the molded floor covering, however, only one certain abrasion resistance and are therefore subject to wear sensitive. In addition, the conventional flooring Shaped bodies the desirable stability against ultraviolet rays lung because lightfast dyes, which are basically used could be so expensive that their use is prohibited. In principle, rubber-polyurethane composite material can be used as desired colorize. But the lighter the colors, the more problematic UV stabilization must be carried out. Besides, the colors only resistant to abrasion. The individual rubber particles are only superficially colored, so that when rubbing the color - like UV-stable it may be - the black rubber particles come out again. This darkens the entire area within a relatively short time. In addition, the immediate leads Contact with the black rubber particles for rubbing off on shoes and clothing because the rubber contains soot.

Attempts have also been made to reduce wear and tear to increase the stability of the shaped flooring body by using it massively vulcanized rubber surfaces. This are available in excellent qualities in many colors. your widespread practical use does not only fail because of the high Manufacturing costs but also the fact that they lack the required water permeability and therefore they are slippery when damp or wet.

The aim of the invention is to form molded rubber flooring materials rethane composite material, e.g. B. in the form of material webs, tiles, To expose plates, boards or the like which are Get inexpensive, largely against ultraviolet radiation are stable, which have a high abrasion resistance and therefore a long service life have and can be made available in several colors. It is essential that the molded floor covering are sufficiently permeable to water and thus both in Optimal sure-footedness, both dry and wet Offer.

To achieve this goal, the invention uses a ver driving for the treatment of rubber-polyurethane composite material existing and having a water-permeable structure Flooring moldings, for. B. material webs, tiles, plates, Boards or the like, following the common Enables manufacturing of the same packaging measures, which stabilize against significant stabilization in a cost-effective way Ultraviolet radiation cause sufficient water through keep casualness and thereby the necessary surefootedness in Allow dry and wet condition. It also depends that increased wear resistance and so that the lifespan of the molded floor covering can be achieved and that this finally with several different colors conditions can be made available.

The invention also relates to a plant for implementation of the treatment procedure and one according to this procedure and with This plant treated flooring molded body made of rubber-polyurethane Han composite material.

In terms of process engineering, the invention is characterized thereby draws,

• - that initially a meltable and containing dyes, powdery - or also pasty - plastic material in one flat layer on the stressed surfaces (usable areas) of the rubber-polyurethane composite material becomes,
• - That then the molded body with the applied material layer generates the heat of fusion for the layer material exposed to the source of heat, and
• - That finally through the molten layer material Pressure is pressed into the surface of the molded body.

It is of particular importance if according to the invention Process type the powdery - or also pasty - plastic material in fields arranged in a grid pattern to each other on the stressed surfaces (usable areas) of the rubber-polyurethane Composite material is applied before the melting and the Pressure to take place. The melted from the applied areas and plastic material that are left unoccupied the claimed surfaces (usable areas) of the flooring molded articles per ensure that the water-permeable structure of the rubber Polyurethane composite material is available to apply to the surfaces safely discharge water.

It has proven itself according to the invention if the powdery - or pasty - plastic material distributed in the grid to each other arranged fields by screen printing as a layer on the molding per surfaces is applied, after which the screen printing materi layer can be exposed to infrared heat radiation. The resulting screen-printed material layer can then be melted due to mechanical force in the molded body surfaces be pushed in.

According to a procedural advanced training feature, as Coating material a plastic powder or a plastic  paste, e.g. B. one such or one based on polyurethane (PU), can be applied to the molded body surface. Here is before seen that the extent of water permeability of the claimed Surfaces (usable areas) by varying the ratio of the total area of which is influenced by the grid coating area. With different thickness of those applied by screen printing Raster coating area can be done according to the inventive method but also the abrasion resistance and / or surefootedness of the be stressed surfaces (usable areas) of the molded floor covering to be influenced.

A system for carrying out the coating process draws according to the invention in that a coating before direction an infrared heating field and this in turn a pressure roller station with siliconized spinning rollers, all these plant sub-areas with each other by means of transport devices gene, e.g. B. a conveyor belt, can be operatively connected.

The by the inventive method and with the help of the inventions system treated flooring molded articles made of rubber Drawing polyurethane composite material with water-permeable structure are particularly characterized by the fact that their stressed surfaces (Usable area) one of the structure of the rubber-polyurethane composite material wear as a superimposed coating, which by melting and Pressure is applied (afterwards). It turned out to be An important training measure proved that this Beschich tion arranged in a grid pattern and between them in each case there are spaced-apart fields, in their neighborhood the water-permeable structure of the rubber-polyurethane composite material than is preserved.

It has also proven itself within the scope of the invention that the coating tion from a melted, pressed and colored Plastic material, e.g. B. is based on polyurethane (PU).  

The shape and surface area of the coating on the bean wanted surfaces (usable areas) of the flooring moldings Applied grids can meet different needs be chosen accordingly and also the distances between the borders of mutually adjacent grid fields can be set up differently depending on requirements. Important is but that the plastic used to form the coating material available in many different colors can be, and that after melting and pushing in the claimed surfaces (usable areas) of the flooring molded articles per regarding the structure of the rubber-polyurethane composite material Abrasion resistance and durability significantly improved and above In addition, the surefootedness increases in the dry and wet condition.

In the embodiments shown in the drawing Invention explained in detail below. Show it

Fig. 1 in schematically simplified spatial representation the treatment process for the claimed upper surfaces (land) of rubber-polyurethane composite material floor covering moldings existing with a water-permeable structure per se,

Fig. 2 on a larger scale each a portion of a rubber-polyurethane composite material existing flooring molded body in four successive treatment steps (a), (b), (c), (d), while in the

FIGS. 3 to 6 each show a top view of four different examples for the surface coating of the molded floor covering with coating fields arranged in a grid pattern.

The production of molded flooring from rubber-polyurethane Composite material takes place in a conventional manner, e.g. B. after DE-B 17 20 059 instead. So there will be used rubber tire chips liquid polyurethane plastic material mixed and then cured in a mold to form a solid composite material block. This composite material block can then be used in the material web each desired layer thickness can be peeled off again to ge in tiles, plates, sheets or the like of each have the desired area divided. These material webs, Tiles, plates, boards or the like have a total permeable structure. You can therefore be in particular ders advantageously as a flooring molded article also outdoors relocate where they constantly have different weather conditions are exposed to nits. The molded flooring articles are therefore in primarily used in kindergartens, on children's playgrounds Balconies / terraces, on golf courses and also in equestrian facilities. By default, the shaped flooring comes as tiles or Panels in area dimensions of 500 × 500 mm and also 500 × 1000 mm are used, the use of different thickness dimensions is common. The respective thickness dimension of the different purposes.

It is not advantageous in the case of the conventional shaped flooring articles only that they are available relatively inexpensively, but also that due to their high water permeability both in Very sure-footed when walked dry and wet can be. Inadequacies of these molded flooring articles However, they are based on the fact that they are only relatively small Have abrasion resistance, i.e. are limited in their lifespan, and that they also have the desirable stability against Ultravio Lat radiation is missing. Another disadvantage is that the rubber polyu rethane composite material can not be colored arbitrarily, so that it for shaped flooring articles only in a few different colors can be made available.  

In Fig. 1 of the drawing, a shaped as a plate flooring molded body 1 is shown, which is made in a conventional manner from rubber-polyurethane composite material and consequently has an overall water-permeable structure. A portion of this molded floor covering 1 is also shown in Fig. 2 (a).

So that a molded in the conventional manner from rubber-polyurethane composite material flooring molded body 1 can meet all the requirements placed on it, especially if it has to be relocated to weather exposed places, it is subjected to a special assembly. The aim is that an inexpensive floor covering molded body 1 not only maintains the usual water permeability so that it is sure-footed in both dry and wet conditions, but it should also be stable against ultraviolet radiation, have the highest possible abrasion resistance and service life, and finally, be available in a wide variety of colors.

For the purpose of its assembly each flooring molded body 1 by a transport device, eg., A conveyor belt 2 a of a coating apparatus 3 is supplied, the machine operates in the manner of a screen printing and a is the example. With a (top) plate cylinder 3 and a (lower) pressure cylinder 3 b works. Herein is first applied to the claimed surfaces 1 a - the usable areas - of the floor covering molded body 1 with the help of the forme cylinder 3 a, a meltable and coloring, powdery - or also pasty - plastic material in a flat layer 1 b, as shown in Fig. 1 indicated and can be clearly seen in Fig. 2 (b).

Fig. 2 (b) also shows that the flat layer 1 b does not have to be applied over the entire surface of the stressed surfaces 1 a. Rather, it can be applied there in fields 4 arranged in a grid-like manner with respect to one another, so that a distance region 5 without coating 1 b remains free or is kept free between adjacent fields 4 .

The from the coating apparatus 3 from passing molded body 1 is then, for example with the aid of a transport device. A further conveyor belt 2 b in the region of a heat of fusion of the material of layer 1 b producing heat source 6 guided, which preferably are formed by an infrared heating panel can. There the layer 1 b is set to such a high temperature, for example 120 ° C., that its material gets into a molten state and thereby an adhesive connection can be made with the claimed surface 1 a (usable area) of the molded floor covering 1 which is shown in Fig. 2 (c).

From the area of the heat source 6 , the floor covering molded body 1 carrying the melted material of layer 1 b is again guided between a pressure roller 7 a and a counter pressure roller 7 b by means of a transport device, for example a third conveyor belt 2 c, at least the pressure roller 7 a has a siliconized outer surface. The molten material of the layer 1 b is pressed here by exerting pressure by means of the pressure roller 7 a into the molded surface 1 a, so that it hereby enters into an intimate connection, as can be seen in FIG. 2 (d).

In this relatively simple and inexpensive manner, flooring molded articles 1 are obtained which can meet all of the requirements placed on them. they are

• - inexpensive to manufacture,
• - Stable against at least on their stressed surface Ultraviolet radiation,
• - sufficiently permeable to water because their stressed upper areas (usable areas) partly remain without coating,
• - sure-footed in dry and wet condition,
• - abrasion resistant, available in different colors.

A plastic powder or a plastic paste is used as the coating material, which can be equipped with the desired color pigments. A Beschich is preferably tung material used, which can enter into an intimate connection with the surface 1 a of the rubber-polyurethane composite mate rials after its reaction, in particular when it is subjected during the reaction of a mechanical pressure.

In FIGS. 3 through 6 of the drawing, various equipment options of the claimed surfaces 1 a seen in flooring moldings 1 with the group consisting of grid-shaped coating panels 4 1 b. However, these are only a few examples of any number of design options.

In the case of Fig. 3, the grid-shaped fields 4 of the coating 1 b each have a circular circumference. In relation to the spacing areas 5 existing between them, they have a relatively small area size.

In the case of FIG. 4, the grid-shaped fields 4 of the coating 1 b on the claimed surface 1 a of the flooring molded body 1 have a square border and are delimited from one another by the spacing areas 5 determining grid strips, the width of which is approximately half a side length corresponds to the grid-like fields 4 .

According to Fig. 5 of the drawing, the grid-shaped panels 4 are the coating 1 b each triangular limited and forth sized of their size, that uncoated spacer regions remain 5 whose surface area considerably exceeds the surface area of the grid-shaped fields 4.

Finally, in Fig. 6 an arrangement of triangularly delimited grid-shaped fields 4 of the coating 1 b can be seen, in which the grid-shaped fields 4 are oriented in such a way that the spacing areas 5 delimiting them from one another are zigzag-shaped strips and on the other hand, form strips running parallel to one another.

In the inventive proposal, it is advantageous that the plastic powder used to form the coating 1 b can be obtained relatively inexpensively and can also be processed easily. It has been shown that it is sufficiently stable against ultraviolet radiation even if it comes into intimate contact with the rubber components of the composite material. The grid-like arrangement of the coating 1 b and the resulting maintenance of free surfaces ensures that the water permeability is maintained to a sufficient degree. The structuring b reached with the coating 1 of the claimed surfaces 1 a favored not only their slip resistance, but also increases its wear resistance significantly.

It has been shown that shaped flooring bodies 1 equipped according to the invention are particularly suitable for use under moving play equipment in children's playgrounds, for example under carousels and swings. This is where safety floors are particularly urgently needed, and the demands on the abrasion resistance of the surface are particularly high here.

Reference list

1 molded floor covering
1 b layer
1 a claimed surface / usable area
2 a conveyor belt
2 b conveyor belt
2 c conveyor belt
3 coating device
3 a forme cylinder
3 b pressure cylinder
4 grid-shaped fields of coating 1 b
5 Distance between the grid-shaped fields
6 heat source
7 a pressure roller of the pressure roller station
7 b Counter pressure roller of the pressure roller station

Claims (13)

1. Process for the treatment of rubber-polyurethane composite material existing and a water-permeable structure on pointing flooring moldings, for. B. material webs, tiles, plates, boards or the like., Characterized in

• - that initially a meltable and dyestuff containing the powdery - or also pasty - plastic material is applied in a flat layer ( 1 b) to the claimed surfaces ( 1 a) - usable areas ( 3, 3 a),
• - That then the floor covering molded body ( 1 ) with the applied material of the layer ( 1 b) a heat source ( 6 ) generating the heat of fusion is set out, and
• - That finally the molten material of the layer ( 1 b) by mechanical pressure ( 7 a, 7 b) in the stressed surface ( 1 a) of the floor covering molded body ( 1 ) is pushed.

2. The method according to claim 1, characterized in that the powdery - or pasty - material is applied as a layer ( 1 b) in grid-like arranged fields ( 4 ) on the stressed surfaces ( 1 a) ( 3, 3 a) . 3. The method according to any one of claims 1 and 2, characterized in that the powdery - or pasty - material in the grid-like arranged fields ( 4 ) by screen printing ( 3 , 3 a) as a layer ( 1 b) on the stressed surfaces ( 1 a) of the molded floor covering ( 1 ) is applied. 4. The method according to any one of claims 1 to 3, characterized in that the screen printing material layer ( 1 b) is exposed to infrared heat radiation ( 6 ). 5. The method of claims 1 to 4, characterized in that the molten screen-material layer (1 b) of the floor covering formed body is forced in (1) for a mechanical force in the stressed surfaces (1 a). 6. The method according to any one of claims 1 to 5, characterized in that a plastic powder or a plastic paste, for. B. on a polyurethane (PU) basis is applied to the stressed surfaces ( 1 a) of the molded floor covering ( 1 ). 7. The method according to any one of claims 1 to 6, characterized in that the extent of the water permeability of the claimed surfaces ( 1 a) - useful areas - is influenced by varying the ratio of their total area to the grid coating area. 8. The method according to any one of claims 1 to 7, characterized in that the abrasion resistance and / or surefootedness of the claimed surfaces ( 1 a) of the shaped floor covering ( 1 ) is influenced with the thickness of the grid coating surfaces. 9. Plant for performing the method according to one of claims 1 to 8, characterized in that a coating device ( 3 ; 3 a, 3 b) an infrared heating field ( 6 ) and this in turn a spinning roller station ( 7 a, 7 b) with a siliconized pressure roller ( 7 a) is arranged downstream. 10. Plant according to claim 9, characterized in that all plant sections - coating device ( 3 , 3 a, 3 b), infrared heating field ( 6 ) and spinning roller station ( 7 a, 7 b) - with each other by transport devices, for. B. by conveyor belts ( 2 a, 2 b, 2 c), in connection. 11. By the method according to one or more of claims 1 to 8 treated flooring molded body ( 1 ) made of rubber-polyurethane composite material with a water-permeable structure, characterized in that the claimed surfaces ( 1 a) - useful areas - one of the structure of Wear rubber-polyurethane composite layered coating ( 1 b), which is applied by melting and Druckaus exercise. 12. Shaped flooring body according to claim 11, characterized in that the coating ( 1 b) from grid-like arrangement angeord Neten and between each spacing ( 5 ) having fields ( 4 ). 13. Floor covering molding according to one of claims 11 and 12, characterized in that the coating ( 1 b) from a melted, pressed and colored plastic material, for. B. on polyurethane (PU) basis.