DE2317936A1 - THERMAL WELDABLE MATERIAL, PROCESS FOR THE PRODUCTION THEREOF, PROCESS FOR PRODUCING FLOOR MARKINGS WITH THIS MATERIAL AND MOBILE FLOOR MARKING DEVICE - Google Patents

Description

- .tuncixen, 10. Aoril 197 '

Ö Munich 5, Erhardtstraße Ö

Ing.Gerhard NOWAK and Ing.Rudolf HEMERSAM Baumannstr. 8 Geiselbergstrasse 16/4

VJien Ul y Austria vixen XI, Austria

Thermally weldable material, process for its production, process for the production of floor markings with this material and a mobile floor marking device

309844/1047

The present invention relates to a thermally weldable material based on thermoresistant Fillers, such as crushed stones, and thermoplastic

^ as a binder _;

plastic, such as ζ .B. High or low pressure polyolefins 7

The invention further relates to a method for producing such a material, to a method for producing Bodenmarkierui'gen, in particular for roads, parking areas, airfields or the like. _i using the material described above »and on a mobile floor marking device for carrying out such a method for producing floor markings.

A thermally weldable material can e.g. Advantage for coverings of or markings on roads, parking lots or airfields etc. ". The material is welded in place. However, it can also be used for Building blocks or panels, cladding, etc. are used.

A material that can be thermally welded in place is already known for road markings consists of a mixture of sand and casting resins. However, this known material is not free-flowing and only bad for the Suitable for transport, as the stones sink down during transport, which means that the homogeneity of the mixture is lost goes. Furthermore, this known material has the major part of a long setting or crosslinking time, e.g. two to ten Hours, so that the road traffic is severely impaired by the resulting long waiting time.

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Another known material, which is intended for the production of pavements for traffic areas, consists of one hot melt mixture of fillers, such as stones and thermoplastic plastic. Similar to chilled cast asphalt, this material is only doughy at high temperatures and otherwise hard, from which difficulties ^ especially with storage and Usej result.

The invention is not initially aimed at To create thermally weldable material, which is easily storable, well suited for transport, as well as light and can be welded quickly.

The invention is also intended to remove plastic waste, the elimination of which is now an ever increasing problem, to be used profitably, so that by means of the invention not only made an important contribution to environmental protection, but also the production of the thermally weldable Materials should be designed extremely cheaply.

The thermally weldable material according to the invention is characterized in that the material is granulated in a pourable manner, the granules consisting of the FÜ13 material being at least partially enveloped by a sintered-on, thin plastic layer. Plastic waste can be used as thermoplastics, in particular waste materials made from polyolefin, such as polypropylene, but also from polyvinyl chloride (PVC), polystyrene, polyisobutylene and the like. As fillers to which the T \> ?. vit; or> l <-ic 'ca are cintered are particularly suitable

3Q98U / 1Q47

Special dolomites or basalts, but other types of rock or Thermodure can also be used.

The material according to the invention is particularly suitable for markings for streets, parking lots, airfields, boundaries, E.g. droning stripes on the highway, etc. (with various optical effects due to different coloring, due to the addition of Glass powder, etc. are achievable), and further also for insulation, the thermally weldable material in the Flame spraying process is applied, for baths, water protection structures, for flat roof insulation (instead of pebble roofs) or as a plaster replacement on exterior or interior walls of buildings.

If the thermally weldable material is particularly suitable for marking roads, parking lots, airfields, etc. should be used, -so it is advantageous if the Thermoplaie and / or fillers are colored. If it is colored yellow, for example, the material according to the invention is suitable for production of blocking or guidelines on roads.

The invention also relates to a method for producing the thermally weldable according to the invention Materials. The method according to the invention consists in that, brought to a suitable grain size, thermoresistant fillers, e.g. crushed stones, for example dolomite or basalt, with dissolved thermoplastics, in particular high or low pressure polyols finely, mechanically mixed and then the thermoplastics with the application of heat (and preferably of Vibration) are sintered onto the crushed grains, and

309344/1047

■ "ί)" "

that, if necessary, sintering is then broken up .. The fact that the thermoplastics are sintered to the grains, practically a connection of the filler material, such as the Stones, and the thermoplastic substances, and it arises, if necessary after a dividing process, a free-flowing one Good, whose mixed homogeneity is maintained even during long transport and that easily, cleanly and can be welded quickly by heating or flame, the welded material being extremely hard and wear-resistant.

In a preferred development of the aforementioned according to the invention Process in which particularly good and uniform mixing of the starting materials can be achieved provided that the thermoplastics in a solvent, preferably a chlorinated hydrocarbon, in particular trichlorethylene, can be dissolved at an elevated temperature with a high concentration and the solution if necessary after cooling, it is mechanically meshed with the crushed fillers. The concentration of the solution is for example 30%, 'and the solution is cooled down State, around 50 to 70 C, saturated. The solvent causes an even wetting of the filler material, so that an extremely homogeneous material is obtained.

Preferably, the thermoplastic materials in the solvent suitable dyestuffs are added during the release to color these plastics, and thus the resultant thermally ve.v weldable material.

309844/1047

Advantageously, within the scope of the aforementioned according to the invention Proceed in such a way that after the mixing process, the mixed substances of a heated belt system or preferably fed to a heated vibratory conveyor where the solvent is driven off and the thermoplastic particles sintered with the crushed filler horns while the solvent is sucked off and recovered, after which the sintered material is broken up if necessary will.

The material according to the invention possesses when it is welded is, excellent properties in terms of strength, aging resistance and insulation. The completeness For the sake of sake, it should also be mentioned that crushed stones, but also sand or earth, as well as, where appropriate, are used as fillers thermoresistant plastics can be used.

For the production of floor markings is a number known of procedures. So it is known, road markings, like in particular the so-called "zebra crossings"; manufacture by making colored road building materials, such as Bitumina or the like. In prefabricated, for example milled or planed, recesses or grooves and there let it cool down or set. However, due to a relatively long setting time of around 2 to 10 hours, during which the road traffic is diverted or impaired, could also do not enforce this procedure, all the more because it is also relatively expensive.

309844/1047

In this regard, it is an object of the present invention to provide a method for producing markings, with which wear-resistant floor markings can be produced efficiently, quickly, cleanly and cheaply.

The inventive method for producing floor markings is characterized in that a groove in the Floor covering or the top wear layer, etc. is formed and the thermally in the, possibly cleaned, groove weldable material in dry, sand-shaped, free-flowing State introduced and welded in the groove, after which by means of a rolling device or the like. on the same Level is smoothed.

The advantages of this inventive method come it is particularly effective when the groove is in a thermoplastic molding process by heating and then Rolling, embossing, pressing or the like. and the marking material is inserted into the still warm groove. Through this the problems, e.g. with milled grooves, are avoided to the extent that occur again and again, as the edges of the groove are damaged by the mechanical processing and cracks form that cannot always be closed by the marking coating or the marking material. Through that in this Cracks penetrating water cause frost damage, for example, which destroys the floor covering in this area to lead. However, one can help oneself here by, after the groove has been frosted out, the groove or the surrounding one Material is heated before the marking material is applied.

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- 8 - 2317938

It is particularly advantageous if the groove during or immediately after the production of the floor covering, for example the wear layer of a bitumen road surface, is shaped and filled with flem marking material. ' This will not only the likelihood of contamination of the groove, which leads to poorer adhesion of the marking coating could be reduced to a minimum, but you can also save yourself the need to preheat the groove, for example, if it is a bituminous or thermoplastic road surface.

With respect to the insertion and loading and solidifying the marking material in the groove according to the method of the invention can be mentioned that in this case an equally large production speed can be achieved as in the Nuterzeugung, so that immediately after the ¹ grooving, the label can be attached, whereby contamination of the groove usually cannot occur. When the welded material has cooled down, which is the case after about 10 minutes, the surface can already be driven on or walked on again.

It is also advantageous to cool the marking during roller burnishing, for example by sprinkling it with water, whereby the marking surface hardens and can be driven on even more quickly.

The floor marking device according to the invention is. through this marked that a hold for the granular, pourable Material and a feeding device for feeding the body

¹ 1

some material from the hold into the grooves in the floor covering.

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-s- 2317935

a leveling and side limiting device, one on the bottom Outlet of the feeding device in the direction of travel following arranged heating device, e.g. one at an angle Flanund nozzle pointing downwards for heating the introduced Marking material, and a rolling device for smooth rolling the marking, which in turn, in the direction of travel of the device seen j is arranged after the heating device, are provided.

The invention will now be further developed below with reference to the exemplary embodiments shown in the drawing explained. In the drawing, FIG. 1 shows an apparatus for carrying out the manufacturing method according to the invention of the material according to the invention, FIG. 2 schematically shows an embodiment a ground marking device according to the invention, which is coupled to a known grooving machine; the 3 schematically shows another embodiment of the invention Floor marking device, which is built for all process steps; 4 shows a hand marking device for use with known grooving machines to which it cannot, however, be coupled; Fig. 5 shows a device which is coupled to a known road paving device, and Figs. 6 and 7 schematically devices for the production of prefabricated panels, webs from the invention Material.

In Fig. 1, 1 is a Sainmelbunker for the thermoplastic waste denotes which may have been shredded and presorted. These plastic accidents are dealt with by means of a

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_ ₁₀ _ 231793B

Weighing unit 2 weighed in certain quantities and fed to a solution container 5 with a stirrer. A suitable solvent, for example a chlorinated hydrocarbon such as trichlorethylene, is taken from a solvent container 3, metered by means of a volume measuring device 4 and introduced into the solution container 5. The plastic waste is now dissolved in the solvent with constant stirring and with heating, so that after cooling the solution to, for example, 50 to 70 ^° C., a saturated solution with a high concentration, about 30%, is obtained.

This highly concentrated solution is now fed to a mixer, in which a filling device 9, for example a funnel with adjustable width, zer-Kfeinerte Stones, for example dolomite or basalt gravel, are introduced. These fillers are in a collecting bunker 7 sorted according to grain size and are fed to the mixer by means of the metering device 8 in the respective quantities added.

The substances are now mixed well, one being special uniform wetting of the filler material with the dissolved thermoplastic material is achieved.

The still moist product is then extruded, compressed and extruded using an extruder 11 with a slot die brought to a belt system 12 with a heating device 13, where the thermoplastics are welded or sintered to the fillers will.

309844/1047

At the same time, a suction device IU the expelled solvent is sucked off and via a pipe a water containing recovery tank 15 fed from above, with the solvent back into the The liquid phase passes over and e.g. sinks down in the container 15 (trichlorethylene!). This can be done via a shut-off valve recovered solvents are then returned to the solvent container 3, for example by means of a pump.

The partially caked material obtained by the sintering process is then removed via a tape removal device 16 a grinder 17 and then a sieve device

18 supplied. Any stones that are too large, to which the thermoplastics are sintered, will be separated out and over a conveyor 20 is brought into the grinder 17 again. The material with the correct grain size is conveyed over a conveyor belt

19 fed to a filling plant 21, weighed there and packed at 20.

In Fig. 2 is a marking device according to the invention 101, which is coupled to a conventional grooving machine 102 with, for example, a milling cutter 103 is. The mobile marking device 101 according to the invention has first of all a groove cleaning device 10U, which can have, for example, brush rollers and / or a fan, for cleaning ' ßung of the milled groove 112 of stones in the floor covering 111 and other dirt. A groove preheating device in the form of a hot gas nozzle 105 is attached behind it, by means of

• which the cleaned groove is preheated so that the

! 3098U / 1Q47

Bringing device 106 from the cargo space 110 of the device in the groove adheres better material. The feeding device 106 can, for example, be a funnel with an adjustable slot width or opening and possibly a vibrating device and a stamp for pre-compacting the marking material introduced. A leveling and Side delimitation device 107, preferably in the form of stepped rollers, ensures that the thermally weldable Marking material only in the groove 112 and not on the adjacent floor covering and in the correct quantity or Layer height is stacked.

By means of the heating device 108, which by a Flame nozzle is formed, which is directed downwards at an angle to the item to be marked, the introduced marking well thermally welded or welded. The hot material is then smooth and smooth with a roller 109 rolled down, preferably a sprinkling of the hot Material or a cooling of the rollers with water or the like. takes place so that the marking coating cools down quickly and solidified.

FIG. 3 shows a marking device 101 'with which all process steps from the generation of grooves to roller burnishing can be carried out. In this device there is also a groove generating device 103 ', for example a Milling machine, like the one shown in FIG. 2, is housed. However, this device 103 'preferably includes a heating device which the top floor covering, for example a bitumen, is heated to such an extent that it is plastically deformable, as well as

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an embossing or pressure roller, with which the groove in the covering is then formed "without cutting". With a device equipped in this way, it is also possible that the Ht preheating device is omitted. Otherwise, this device then still contains the same devices as that according to FIG. 2, so that a new description of the same is unnecessary.

In FIG. U, a lighter, more handy embodiment of the marking device according to the invention is shown, which is a groove preheating device 105, a marking product device 106, a leveling device 107, a welding device 108 and a rolling device 109. This Marking device 101 * 'is intended in particular for independent, mobile use and is not connected to a known grooving machine detachable. If groove cleaning has to be carried out, this is done either with this device manually, or the cleaning is preferably done with the aid of the preheating nozzle 105, which is a hot gas jet aimed at the groove, this first cleans and also heated at the same time. The device 101 ″ according to FIG Advantageously used when a road marking is to be renewed. First of all, the marking surface heated and then peeled off so that the groove is exposed, after which a new road marking is made with the device 101 " will.

A road paving machine 115 is shown in FIG. 5 ' shown with the road surface or wearing courses can be relocated; to this paving machine

309844/1047

a groove generating machine 102 'with a stamping device 103', similar to that described in FIG. 3, coupled with which a groove can be rolled or embossed into the still plastically deformable covering 111. A marking device 101 '''is connected to this machine 102', the structure of which corresponds to the device explained in FIG An efficient and energy-saving way to produce a road marking or the like .. It is also possible by sprinkling
or addition of glass powder, quartz sand or the like, especially in the top layer of the marking, special optical
To achieve effects, especially at dangerous spots.

The material according to the invention can also, e.g.

according to the continuous shown in Fig. 6 schematically , Panels and sheets,

Procedure, / to be produced. A collecting bunker is 120 with the thermally weldable, dry one
Material 121 is an endless belt 122, which is divided according to the width, for separating the plates, webs or the like to be produced. loaded with this material 121. The material 121 is then during the rotation of the belt by means of a
Roller .123 compacted, then welded in a heating device 124, cooled and as plates, webs or the like. 125 packed and transported away. Such plates or the like. can, for example, be inserted in grooves to form marking coatings
will.

309844/1047

-is- 2317938

Another process for hors celluiip, plates or the like. ,. which, in contrast to the example described, does not branch continuously, is shown schematically in FIG. The riessif ahip & _{y is} thermally dispensed - edible starting material 131 in a funnel or the like. 132 filled in, the molds 130 charged. A scraper 133 ensures the correct dosage in the molds provided with a newly dehärjiven B * ¹ lug, while a roller 134 is used to pre-seal the filled material. The necessary glaxed flat surface structure as well as a; Further consolidation of the material is achieved after welding it in a heating apparatus 135 with the aid of a pressure control device 136. After cooling, the finished plates or the like. ejected by means of an ejector 137.

30984A / 10A7

Claims (1)

- "- 2317938 Patent claims: 1. Thermally weldable material based on thermoresistant fillers, such as crushed stones and thermoplastics such as high or low pressure polyolefins as a binder, characterized in that the material is granulated in a free-flowing manner, consisting of the filler existing grains of a sintered thin plastic layer are at least partially enveloped. 2. Thermally weldable material according to claim 1, especially for markings on streets, parking lots or the like., characterized in that the thermoplastics and / or fillers are colored. 3. Process for the production of thermally weldable Material according to claim 1 or 2, characterized in that thermoresistant fillers brought to a suitable grain size, e.g. crushed stones, for example dolomite or basalt, with dissolved thermoplastics, especially high-pressure polyolefins, mechanically mixed and the thermoplastics then with the application of heat (and preferably of vibration) be sintered to the crushed grains, and that if necessary then sintered together are broken up. 4. The method according to claim 3, characterized in that the thermoplastics are dissolved in a solvent, preferably a chlorinated hydrocarbon, in particular trichlorethylene, at an elevated temperature with a high concentration and the solution, optionally after cooling, with the comminuted fillers S ^ ⁰ ) ¹ ^ ¹ ^ ³⁰ ^ is blended. ORlGiWAL INSPECTED 5. The method according to claim 4, characterized in that during the dissolution of the thermoplastics in the Dyes suitable for solvents can be added. 6. The method according to claim 4 or 5, characterized in that after the mixing process, the mixed substances exne.p heated belt system or preferably a heated vibratory conveyor are fed, where the solvent is driven off and the thermoplastic particles are sintered with the crushed filler grains while the solvent is sucked off and recovered, after which the sintered material is dispensed, if necessary. 7. Process for the production of floor markings, in particular for roads, parking areas, airfields or the like. under Use of a material according to claim 1 or 2, characterized in that a groove in the floor covering or the topmost Wear layer etc. is formed and the thermally weldable material in dry, sand-shaped, pourable state is introduced and welded in the groove, after which by means of a rolling device or the like. is smoothed to the same level. ' 8. The method according to claim 7, characterized in that the groove milled in a known V / iron, planed or the like. is, above all preferably the material forming the groove, e.g. the gymnastics of a road surface, for example by flame loh. "·! vororuciiTit will. 309844/1047 -ie- 231793Θ 9. The method according to claim 7, characterized in that the groove in a thermoplastic molding process by heating and subsequent rolling, embossing, pressing or the like. and the marking material is inserted into the still warm groove. 10. The method according to claim 7, characterized in that the groove during or immediately after the production of the floor covering, For example, the wear layer of a bitumen road surface, shaped and the thermally weldable material introduced will. 11. The method according to any one of claims 7 to 10, characterized in that the welding of the thermally weldable Material in the groove is made by flame and the material is rolled smooth while it is still hot. 12. The method according to claim 11, characterized in that the marking during roller burnishing, for example by sprinkling with water. 13. Mobile floor marking device for carrying out a method according to one of claims 7 to 12, characterized in that that a loading space (10) for the granular, free-flowing material and a feeding device (6) for bringing the granular material from the hold (10) into the grooves in the floor covering, a leveling and side limiting device, one of the bottom outlet of the feeding device (6) in Heating equipment arranged downstream in the direction of travel, e.g. an inclined downward facing nozzle for heating the introduced marking lines, and a whale device for 3098 ^ 4/1047 231793Θ Smooth rolling of the marking, which in turn »seen in the direction of travel of the device, after the heating device is arranged, are provided. IU. Device according to claim 13, in particular for manufacture of markings in bituminous floor coverings, characterized in that that a grooving machine is provided on the device, which has a heating device for heating the floor covering and a roller or the like. for plastic shaping of the groove. 15. Apparatus according to claim 13, which is connected to a floor covering or. Road paving machine can be coupled, marked by means of a roller, embossing or pressing device for plastic Forming the hat in the still deformable or warm floor covering. 309844/1047 Blank page