MXPA95004485A - Method to obtain a paracarret reinforcement product - Google Patents

Abstract

The present invention relates to a method for obtaining a highway reinforcing product, which comprises: a) establishing a downwardly moving web of reinforcing fibers of a heat-softening material, b) supplying molten asphalt. rotating asphalt spinner, placed inside the veil of reinforcing fibers, c) centrifuging the asphalt fibers from the asphalt spinner, whereby the asphalt fibers are directed in contact with the veil, to integrate these asphalt fibers with reinforcing fibers, d) feeding a reinforcing mat under the asphalt spinner, and e) collecting the asphalt and reinforcement fibers integrated on top of the reinforcing mat, to produce a reinforcement product for the reel

Description

METHOD TO OBTAIN A PRODUCT FOR ROAD REINFORCEMENT FIELD OF THE INVENTION This invention relates to the manufacture of asphalt products. More particularly, this invention relates to asphalt products in fibrous form and to methods for producing fibrous forms of asphalt.

PREVIOUS TECHNIQUE Asphalt products have been produced in various forms, and the main uses of asphalt have been in paving and roofing products. The common source of asphalt is waste or funds in the oil refining industry. This asphalt must be refined or further processed by blowing air (oxidation) in order to raise its softening point and increase its rigidity and thus obtain useful products for roofing and especially asphalt products. Some asphalt products have improved properties due to the addition of natural or synthetic rubbers or other organic additives. While the asphalt itself has many beneficial properties, it lacks a resistance to the inherent tension and integrity. Therefore, many asphalt products are reinforced with materials, such as glass fibers or organic fibers, for example polymer fibers, and have fillers such as ground limestone. Asphalt shingles for roofing are based, for example, on an inner band or carrier of a wet-process glass fiber mat, and the asphalt itself contains about 65 weight percent of a ground limestone filler. . Other fillers used in asphalt products include carbon black, finely milled tires, ground glass and pieces of various inorganic or organic materials. One of the problems with reinforced asphalt is that, often, it is difficult to integrate the reinforcing material into the asphalt matrix, particularly in a uniform manner. Traditionally, the integration of asphalt and reinforcement is achieved by fixing the reinforcement material on a mat or band and applying the asphalt in molten form, as in the case of the manufacture of asphalt shingles for the roof. The manufacture of tiles consists of carrying a continuous mat of glass fibers, a wet process, inside a bath of molten asphalt, to cause the coating on both sides of the mat, as well as to fill the interstices between the fibers of individual glass. This process is limited in that a relatively uniform coating, similar to a film, can only be applied. It would be advantageous to be able to apply asphalt layers in several products, where these layers are not only films, but rather porous mats or other types of non-uniform layers. Likewise, the coating process requires the assembly of the final product at the manufacturing site with a liquid asphalt coating. It would be advantageous to be able to assemble the products that contain asphalt layers in the field, such as in a place where the roads are repaired. Another known method to integrate the asphalt with the reinforcements is to mix the asphalt with loose or particulate reinforcement materials. Such mixing requires significant energy, capital and equipment, and is not always successful in providing a uniform mix of asphalt and reinforcement. It would be advantageous to be able to intermix or uniformly integrate the asphalt with reinforcing materials that are in a non-fixed or loose form, rather than being bonded in a fixed product, such as a mat. Likewise, it would be advantageous to be able to introduce the asphalt itself in several products in other forms besides the liquid one. Numerous reinforcement layers have been used to reinforce road systems. These well-known reinforcing layers include glass fibers in the form of woven or non-woven mats, mats of organic materials impregnated with asphalt, such as polyester fibers, stear in the form of a grid or open weave, and layers. of glass fibers or other reinforcing fibers. These reinforcement layers are applied to the road, under the asphalt layers of bituminous aggregates, subsequently applied, to reinforce this bituminous aggregate. These reinforcement layers are traditionally used in locations where the underlying pavement has been broken and the road system is being repaired. Reinforcement layers can also be used on the entire road for resurfacing or as the original construction. Similarly, reinforcing layers can be used for special applications, such as on top surfaces of bridges. It is well known to use a sticky coating on any of these road reinforcement products, in order to secure the reinforcement product to the road before applying the pavement layer. One of the problems with the reinforcement products for road, currently available, is that the assembly of several layers, which make up the reinforcement of the road, is an expensive and time-consuming process. Likewise, it is difficult to accurately dose the asphalt layers in these products. Also, it is not easy to fully integrate the reinforcement layers of the road reinforcement product with the asphalt, without completely impregnating the reinforcement layer in a bath of molten asphalt. Finally, it would be advantageous to be able to produce road reinforcement products with greater strength, without having to increase the quantity of the materials used.

EXHIBITION OF THE INVENTION A fibrous asphalt has now been developed and a method for producing asphalt fibers. These asphalt fibers are a new form of asphalt and can be used in traditional asphalt applications, such as paving, roofing and special products, as well as new products. Asphalt fibers can be formed in a rotary process by centrifugation and can be collected as asphalt fibrous webs. These bands can be incorporated into numerous products as a layer of asphalt material. According to this invention, there is provided a method for producing asphalt fibers, which comprises supplying molten asphalt to a rotary asphalt spinner, spinning the asphalt fibers from the spinner and collecting the asphalt fibers. This asphalt can be modified with one or more organic modifiers, from the group consisting of natural rubber, synthetic rubber, elastomers, polymers, resins and other thermoplastic or thermoset materials. Preferably, the modifiers are present in an amount within the approximate range of 2 to 30 percent (percent by weight of the total organic composition). More preferably, the modifiers are present in an amount within the approximate range of 4 to 12 percent. In a specific embodiment of the invention, the molten asphalt is supplied to the asphalt spinner at a temperature within the approximate range of 132 to 260 ^ 0, as measured at a delivery point, just above the spinner. In another embodiment of the invention, the asphalt is subjected to an oxidation process, sufficient to give it a softening point within the approximate range of 82 to 177ac and preferably within the approximate range of 93 to 132fiC, before the formation process of fibers. All softening points were measured using the ring and ball method. In yet another embodiment of the invention, the centrifugation step provides the acceleration of the molten asphalt, sufficient to produce the primary asphalt fibers, having a diameter in the approximate range of 635 x 103 to 1524 x 103 μm. In a specific embodiment of the invention, the spinner has a peripheral wall having between 500 to 25,000 holes, through which the asphalt is centrifuged. Preferably, the asphalt spinner has between 500 and 10,000 holes.

In yet another embodiment of the invention, the asphalt is centrifuged by the spinner to form primary asphalt fibers, and these primary asphalt fibers are further attenuated by an annular gaseous flow, moving downward, from a blower to form a veil, moving downwards, of asphalt fibers. In accordance with this invention, asphalt fibers having diameters less than 6350 x 103 um are also provided. Preferably, the diameter of the asphalt fibers is within the range of 635 x 103 to 3810 x 103 μm and the asphalt has a softening point in the range of 82 to 177ac and preferably within the range of 93 to 1322C, in a state Unfilled. More preferably, the diameter of the asphalt fibers is within the range of 635 x 103 to 1524 x 103 μm. The asphalt fibers can be filled and reinforced with reinforcing fibers, for example with glass fibers. In accordance with this invention, a mat of asphalt fibers is also provided, which have diameters in the range of 635 x 103 to 1524 x 103 μm, and the asphalt has a softening point within the approximate range of 82 to 177ac. The mat can be laminated as one layer to another mat of the reinforcing material, such as a mat of glass fibers from a wet process, to obtain a layered asphalt product.

Also considered within this invention is a method for obtaining roofing asphalt shingles, which includes the steps of assembling together a layer of asphalt fibers is a mat of reinforcing fibers, coating the mats assembled with asphalt, to form a sheet coated with asphalt, applying granules to the asphalt-coated sheet and cutting this coated sheet of asphalt roof tiles. The invention also includes asphalt shingles for roofs, obtained by this process. In accordance with this invention, a method is also provided for integrating the asphalt with reinforcing fibers, including the steps of establishing a downwardly moving web of reinforcing fibers of a material that can be softened by heat, such like the glass fibers, supplying molten asphalt to a rotary spinner thereof, placed inside the reinforcing fiber web, centrifuging the asphalt fibers from the spinner, so that these asphalt fibers are directed in contact with the web, to integrate the asphalt with the reinforcing fibers, and collect the integrated reinforcing fibers and asphalt. Another aspect of this invention relates to the use of the asphalt fibers of the invention as the starting material for a carbonization process. The carbon fibers are prepared by controlled pyrolysis of an organic precursor in fibrous form. Commercial products have been based on rayon, polyacrylonitrile and resins (derived from coal tar, petroleum and other sources). The process involves a number of common stages for all materials. First, the fibers are produced by extrusion or blowing of the melt. The fibers are then stabilized by oxidation at temperatures within the 200 to 450ac range, usually in the air. The oxidation process supplies the fibers with a sufficient structure at the molecular level and maintains their configuration during the carbonization process. Finally, the fibers are carbonized at temperatures greater than 800ac in an inert atmosphere, such as argon. To improve the properties, the fibers are stretched during the carbonization stage, to orient their molecules. Heating at higher temperatures (2500 to 3000ac) also increases its modulus and strength. The resulting carbon fibers have a wide variety of uses. Resin fibers are obtained from petroleum resins or coal tar, and are highly aromatic and contain a large proportion of asphaltenes (about 80 to 90 percent, as measured by heptane precipitation, according to ASTM 3279 -78). The melting point of the resin is preferred to be close to 260ac, with a glass transition temperature of about 85SC. Many resins are not compatible with polymers. In contrast to resin fibers, the asphalt used to obtain the asphalt fibers of the present invention contains 0 to 35 percent asphaltenes and typically 15 to 25 percent. The content of asphaltene is kept low to ensure compatibility are the added polymers. The glass transition temperature of the asphalt is within the approximate range of -15 to -5dC. The melting point of the asphalt is typically within the approximate range of 93 to 1162C. A further aspect of the invention relates to a method for obtaining highway reinforcing products, which includes establishing a downwardly moving web of reinforcing fibers of a material that can be rebadged by a salter, supplying molten asphalt to a rotary asphalt spinner, soldered within the veil of the reinforcing fibers, centrifuge the asphalt fibers from the spinner and direct these asphalt fibers in contact with the web, to integrate this asphalt with the reinforcing fibers, feed a mat of reinforcement under the asphalt spinner, and resorb the integrated asphalt and reinforcing fibers on top of these reinforcing fibers to form a road reinforcement product.

The invention also includes the produsto reinforcement for road, produced by this method. By supplying the asphalt sap in the form of asphalt fibers, the process to obtain the reinforcement products for sarretera takes less time and is less expensive. The asphalt layers in these products can be dosed more exastamente and the asphalt and the reinforcement fibers can be easily integrated. In addition, the use of asphalt fibers in reinforcement products for sarretera has made it possible to obtain higher strength products, without having to increase the amount of materials used. Also, since it is not necessary to immerse the reinforcing mat into a bath of molten asphalt, the road reinforcement product can be obtained without the inherent expense and hazards of the open asphalt bath.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view sessionada, in evasion, of the apparatus to sentrifugar asphalt fibers, according to the method of the invention. Figure 2 is a schematic view, in an elevated position, of the apparatus for the joint formation of asphalt fibers and glass fibers, according to the method of the invention.

Figure 3 is a schematic view, in elevation, of the apparatus for mixing together the veils of the asphalt fibers are the veils of the glass fibers. Figure 4 is a perspective view of a mat of asphalt fibers, according to the invention. Figure 5 is a schematic cross-sectional view, in evasion, of a laminated mat that is a mat of asphalt fibers and a reinforcing mat. Figure 6 is a schematic view, in elevasion, of a process to obtain asphalt shingles for tests, according to the invention. Figure 7 is a schematic plan view of an asphalt tile for teshos, according to the invention. Figure 8 is a schematic view, in elevasion, of a process to obtain a reinforcement product for sarretera, according to the invention. Figure 9 is a schematic view, in transverse sessión, in evasion, of a produsto reinforcement for sarretera, according to the invention.

THE BEST WAY TO CARRY OUT THE INVENTION As used in this espesifisation, all referensias in percentages are in percent by weight. The term "asphalt", as used in this specifisation, includes the materials some times named somo "bitumen", and the two terms are synonymous with each other. The asphalts that can be used in this invention can be the asphalts that naturally ooze or the asphalts manufactured, produced by the refining of the oil, and can include the asphalts derived frassioned from direst operasidn, the asphalts proceeding from the dessompo-sisión termisa, the asphalts derived from prosesos, such as the oxidation of asphalts, the deasphalting of the propane, the steam distillation, the quasi-vaporisation and the like. In one of its preferred embodiments, the invention is applicable to asphalts for the production of roofing shingles. The asphalt may be modified or unmodified. As shown in Figure 1, the apparatus for producing asphalt fibers of a rotary process comprises the rotating asphalt spinner 10, the sual being generally comprised of the bottom wall 12 and the periphery wall 14 of the spinner. The asphalt spinner can be cast from a nickel / sobalt / chromium alloy, as used for the production of glass fibers, or it can be any other annealed spinner, such as a welded stainless steel spout. The periphery wall of the spinner has numerous orifices 16 for centrifuging the asphalt fibers and preferably has between about 500 and about 25,000 orifisiums.

The molten asphalt is left inside the rotary spinner of the same, as is the sorrounding 20. When it reaches the bottom wall of the spinner, it is driven radially outwards and goes up to the peripheral wall., where the force sentrí-fuga drives the asphalt through the orifisios, somo sorrientes or primary fibers 22 of asphalt. After leaving the asphalt spinner, the primary asphalt fibers 22 are directed down the annular blower 24, to form a flow or web 25, moving downwards, of these asphalt fibers. Any means can be used to flip the fibers from a generally radial tray to a tray directed to a surface of resolution. In one embodiment of the invention, the centrifugal attenuation by rotation of the asphalt spinner is sufficient to produce asphalt fibers of the desired diameter of the fibers and no further attenuation is necessary. The centrifugation process supplies acceleration to the molten asphalt, sufficient to produce primary asphalt fibers having a diameter below 6350 x 103 μm, preferably within the approximate range of 635 x 103 to 3810 x 103 μm and more preferably within the approximate range from 635 x 103 to 1524 x 10 μm. In another embodiment of the invention, secondary attenuation is used to further attenuate the primary fibers. In this case the blower is supplied with sufficient air pressure to drive the primary fibers and further attenuate them in the final desired diameter of the asphalt fibers. As shown in Figure 1, the blower attenuates the primary fibers in the final fibers 26, which are resolved as a band 28 of asphalt fibers on any suitable recolection surface, such as the conveyor 30. Next to the stage that Asphalt fibers are formed, the asphalt fiber web 28 can be transported through its subsequent process step, such as the furnace 32, to produce a final asphalt product, for example the mat 34, the sual is also shown in Figure 4. The further stages of the process may also include the lamination of the mat or layers of asphalt fibers with a reinforcing layer, such as a mat of glass fibers. The mat of asphalt fibers is porous, having a porosity within the approximate range of 9.4 x 10 ~ 3 up to 23.6 x 10 ~ 3 m3 / sec, on a square sample of 0.645 x 10 ~ 3 m2, with a pressure drop of 0.93 mm Hg. Preferably, the mat of asphalt fibers has a porosity within the approximate range of 14.20 x 10 ~ 3 to 18.90 x 10 ~ 3 m3 / sec. The mat has a density within the approximate range of 32 to 160 kg / m3 and preferably within the approximate range of 48 to 80 kg / m3. The mat has a high degree of flexibility and conformability (the ability to be molded or configured around sharp corners) when compared to an asphalt film of the same density or thickness. An optional feature of the invention is the use of a spray element, such as an induction blow-off, or the asphalt spinner or the primary asphalt fibers, or both, to enhance the attenuation of the asphalt fibers. By heating the primary asphalt fibers, the process of further attenuation in the final asphalt fibers is improved. There is still a need for secondary attenuation by the blower, an auxiliary heat source can be used to maintain the temperature of the asphalt spinner at the level for optimal fiber asphalt configuration. Other sprinkler elements for the asphalt spinner can be used, such as a heating of resistans elstrisa. The temperature of the asphalt spinner should be within the approximate range of 132 to 260ac and preferably within the approximate range of 165 to 2162C.

Example I The Venezuelan Lagovan flow was oxidized in a converter to a softening point of 115ac. At this breaking point, the asphalt had a visosity, at 177ac, of 4,300 sps (4.3 Pa-s) and a penetration of 17 dmm, at 25ac, as measured by ASTM D-5. Oxidation was advanced sufficiently to enable the formation of fibers, but not so much so as to ensure that the asphalt became brittle at room temperature. No filler was added to the asphalt. This asphalt was heated in a saline from the outgoing melt, before delivery to the asphalt spinner, and at a temperature of 77 ° C. The asphalt spinner had a diameter of 381 mm and rotated at 2300 rpm. The periphery wall of the spinner was adapted to 854 holes, each with a diameter of 0.86 mm. There was no external heating from a burner and no secondary attenuation from a blower. The asphalt fibers were collected as a porous mat.

Example II The oxidized Logovan flow of Example I was further modified with 4 percent Kraton 1184. The polymer was incorporated into the asphalt by mixing in a Ross cutting mixer at 204 ° C for about 60 minutes. The resulting modified asphalt had a viscosity, at 177ac, of 110,000 cps (110 Pa-s), a 14iac rebadging point and a penetration of 14 dmm, at 25ac. The asphalt was delivered at a temperature of 204 ° C to the spinner of Example I, which rotated at 1700 rpm, and the asphalt fibers were centrifuged. These fibers were noticeably longer, stronger and less sticky than the fibers of Example I.

Example III A 96 percent mix of Lagovan flow (softening point of 40ac and 4 percent of Kraton 1102, air was blown at 246ac for 3 hours and 50 minutes.) The resulting asphalt had a rebase point of 11aac, a penetration of 20 dmm, at 252C, and a visocose, at 177ac, of 11,250 sps (11.25 Pa-s) .The asphalt was further prosed by the asdisoning of salor at 166ac for 2 hours, to raise the visosity, producing an asphalt being the breaking point of 118 c and a visosity, at 177ac, of 26,900 sps (26.9 Pa-s) This asphalt was delivered at a temperature of 182ac to the spinner of Example I, which rotated at 1356 rpm.The resultant asphalt fibers were an open-type band.

EXAMPLE IV The oxidized Lagovan flow of Example I was modified by mixing it with 10 per cent of the Himont Profax 6301 polypropylene in a cutting mortar. The resulting asphalt had a softening point of 150ac, a penetration of 7 dmm to 25 c and a visosity, at 177ac, of 110,000 sps (110 Pa-s). The asphalt was delivered at a temperature of 209ac to the spinner of Example I, which rotated at 1229 rpm. The resulting asphalt fibers were more stenotic, less sticky and more blended than any of the asphalt fiber samples of Examples I to III.

EXAMPLE V The diameter of the asphalt fibers produced in Examples I to IV, was measured by first preparing a sample by fixing a thin matting of 25.4 mm by 38.1 mm asphalt fibers on a misrossopium slide. of subway. The misrossopio was equipped with a 200-fold amplification capability, a video camera and a monitor. The transmitted light was used for all the measurements in a bright field mode. A pair of dial gauges was used, with a capacity of up to 0.1 mm and a depth of salibration are divisions of at least 10 misters and a total length of suando minus 100 misras. The salibration sursor was solosó on the slide and measured 100 misras delimited by the video monitor using salivadores suadrante. From this measurement, the relasion of the real size of the essala (100 misras) and the measured size of the monitor was sampled. The sursor of the sample was then placed on the slide and 100 fibers delimited by the monitor were measured. Only fibers that were separated from their neighbors (not fused or closely matted) were measured. The actual diameters of the fibers are salsu-laron, are based on the data of salibration, and were averaged. As used in this thickening, the term "having a diameter", within a certain range, means that approximately 95 percent of the asphalt fibers in a random sample have a diameter within the specified range. The results of the measurements of the diameters of the asphalt fibers are shown in Table I. The sapasity of measuring the diameters of the asphalt fibers, using the previous method, became more difficult due to the black color of the asphalt. Because of this, it is difficult to discern which fibers, if any, are paired (fused along the axis) or closely entangled in another way. For this reason, the measurements shown in Table I can deviate towards values greater than those actually measured. Due to differences in asphalt formulations, some samples have a natural tendency to melt or mate more than others. As a sompassion, the diameters of the fibers coming from a sesame sample of polyethylene terephthalate (PET), of bottle grade, obtained by a similar rotary process that forms fibers, are included as a control in Table I. The PET material used was Eastman Kodapet, set at 230ac during the night. The PET fibers were obtained by centrifuging the molten PET, delivered at 316ac to a spinner with a diameter of 318 mm, with 2400 holes having a diameter of 0.406 mm. The spinner rotated at 1600 rpm. The PET fibers exhibited some fusion and entanglement. Some of the PET fibers were matched and the fibers exhibited brittleness (lack of slippage when rubbing one fiber on another).

EXAMPLE VI The asphalt of Example II was improved by the addition of an arsilla filler to supply 10 per cent of the total weight by weight. The fibers were stiffer than the fibers produced in Example II and were also drier and shorter. Preferably, the amount of the filler is spread within the approximate range of 2 to 30 by the weight of the total weight of the asphalt and the filler.

Table I DISTRIBUTION OF THE DIAMETER OF THE FIBERS The process to form asphalt fibers is a rotary asphalt spinner, can be used in symbiosis are a rotary process that forms glass fibers, to integrate the asphalt are glass fibers. As shown in Figure 2, the asphalt spinner 10 was placed under a convensional glass spinner, of the well-conical type to produce glass fibers. The asphalt spinner was preferably mounted under the bottom wall of the glass spinner for coaxial rotation with the glass spinner on the shaft 42. The stream 20 of molten asphalt falls through a hollow barrel 44, which supports rotationally the glass spinner The attenuation of the glass fibers can be facilitated by the annular blower 46 and the annular burner 36, in a well-known manner in the glass fiber manufacturing process.

The molten glass was dropped as the stream 50 into the spinner, and is sentinelled as glass fibers 52 and turned downwards as a flow of fibers and gases, or veil 54. An additional apparatus, such as the nozzle, can be soldered. 56 of binder, either inside or outside the veil, to ply any binder or re-cover or the desired particles, or to supply liquids for the cooling of asphalt fibers. During the operation, the asphalt fibers are distributed radially outside from the asphalt spinner and they are intermixed are the glass fibers in the web and an interspersed mass 58 of asphalt fibers and glass fibers are resounded on the conveyor . Since the material forming the glass fibers operates at temperatures above the breaking point of the glass, the surrounding area and immediately below the glass spinner is very protruding. It is possible that some of the asphalt fibers are entrained in some of the flowing outgoing gases are the veil of the fibers and thus undergo temperatures sufficient to rebank or melt the asphalt fibers. In such a saso, some of the asphalt material may itself bond to some of the glass fibers to form asphalt particles on the fibers. The asphalt may also be in the form of a re-surfacing or some of the fibers. One must be careful not to introduce the asphalt in a region are temperatures so high that they spread this asphalt. The mass of interspersed asphalt and glass fibers can be transported to any suitable process station, such as oven 32, before it becomes the asphalt / glass fiber product 60.

EXAMPLE VII The asphalt sample of Example IV formed fibers in conjunction with glass fibers, is an apparatus similar to that shown in Figure 2. The resulting mass of interspersed asphalt and glass fibers was resolved as an insulation product, the sual an isolation of black glass fibers is observed. The insulation product of asphalt / glass fibers was between 60 and 65 by weight of organic substances, although this weight by weight of organic substances may be within the approximate range of 20 to 80 per cent of the product matted of asphalt / glass fibers. Four individual samples were prepared, with the results shown in Table II.

Table II PROPERTIES OF ISOLATION DB ASPHALT FIBERS / GLASS As an alternative to the soaxial fiber shaping previously explained and shown in Figure 2, the alternate entanglement of the asphalt fiber webs and the glass fibers can also be used, as shown in Figure 3. Asphalt fibers can be integrated with the glass fibers by centrifuging the glass fibers of one or more rotating glass spinners 40, which are supplied with the molten glass by any suitable device of delivery, such as srisol 66, to stabilize one or more veils 54, which move downwards, of glass fibers. The glass fiber webs are soldered on top of the resin surface 30 and the glass fiber webs are generally aligned along the length of the resin surface. The asphalt fibers are sentrifuged by one or more rotating glass spinners 10, to establish one or more webs 25, moving downwards, of asphalt fibers, also soldered on top of the surface resistor. The asphalt material can be supplied in the molten form from a source, such as the asphalt supply stage 68. The asphalt fiber webs are aligned by the length of the resolestora superfisie, generally solineal are the webs of the glass fibers, in an alternative way are these glass fiber webs. The result is that asphalt fibers and glass fibers are intermingled and resorbed as integrated asphalt fibers and glass fibers. Next, the integrated asphalt and glass fibers can be further processed into the desired asphalt / glass fibers. In an alter-native mode, the single asphalt spinner is soldered between a pair of glass spinners. The mat 34 of asphalt fibers of the invention, shown in Figure 4, can be incorporated into numerous applications, particularly in the truss industry. Possible applications include thermoplastic materials of glass mats, filtration materials, sound absorption, packaging, sorbents, adhesives, mat binders, moisture resistant coatings, sorrosion resistant sheets, insulation, solosion of polymers for tile shuffling, application of a conformation layer without the need to sell off or a solvent, sapes that absorb impact, and surface repair of roads. The integrated glass and asphalt fibers can be subjected to a compression and sonolidation stage, which forms a denser product. Before the solubilization of the integrated glass and asphalt fibers they preferably have a density in the approximate range of 32 to 240 kg / m 3, while after the solidification of the integrated glass and asphalt fibers, the produst has a density within the approximate range of 1041 to 1922 kg / m3. The prodused sonorous will have diverse uses, which include vibration dampening material, molding material, insulation and floor tile substrates. When the mat of asphalt fibers is used in the extrusion and repairing of asphalt, the mat of asphalt fibers can be laminated to be reinforcing mats, such as a mat of wet-laid glass fibers, to form a layer of asphalt fibers. reinforcement. This reinforcement layer is useful in several other applications in the construction as well as in the construction of the sarreteras. As shown in Figure 5, a laminated mat 70 can be formed by laminating together the asphalt mat 34 and the reinforcing sheet, such as a glass fiber mat 72. The laminated mat can be used as an internal diaphragm that absorbs tensions, in several levels of construction, such as in sarreteras. The use of the mat of asphalt fibers in a tile process is shown in Figure 6, in which a mat 76 of wet-laid tiles and a sap 34 of asphalt fibers are laminated together to form a laminated mat. 70. The laminated mat is fed in an asphalt re-surfactant 78 and granules are piled to the asphalt sheet coated by an applicator 80 thereof. The granules are pressed into the sheet in any way adesuada, as such by a press 82 thereof, and sorted in individual tiles 84 by the cutter 86. An individual tile is shown in Figure 7. After forming discrete tiles, they can be processed is the apparatus used only for the handling of them, such as a stacker 88, which forms stacks 90 of tiles, and a bundle packer 92, to form bundles 94 of tiles. The use of a sap of asphalt fibers n the sonsion of a tile or other product for the tesho, it is possible the selestiva colocasión of a sapa that has properties espesífisas. For example, if the asphalt fibers in the sap are modified they are a polymer to provide high flexibility or elasticity, the use of the sapa has made possible the solosion of asphalt of high elastisity in the upper portion of the tile (where the elasticity is necessary ) without requiring that all the asphalt of the coating be modified. This sonorussion will provide a better performance of the roof tile without any additional damage.

HIV Example Tile asphalt shingles were manufactured by laminating a sack of asphalt fibers obtained as in Example II above, they are a wet shingle mat mat. The laminated mat was then resurfaced and filled with asphalt to obtain a tile. The Elmendorf resistensia to the tear of the resulting tile was 1953 grams. This is about 9 times greater than the typical tear resistances for the concrete tiles. The process to obtain reinforcing products for the saucer, shown in Figure 8, includes a glass spinner 100, mounted for the soaxial rotation, as the first asphalt spinner 102. The molten glass 104, supplied to the spinner, is stripped from the glass row in the form of glass fibers 106. The molten asphalt 108, supplied to the first asphalt spinner, is streaked into asphalt fibers 110 by the first asphalt spinner. The asphalt fibers preferably have a diameter in the approximate range of 635 x 10 to 1524 x 10 3 μm. This manufacture of glass fibers and asphalt fibers mixes the two materials and integrates them mutually. Glass fibers and asphalt fibers can be turned down by annular blowers, not shown. The glass spinner and the first asphalt spinner are soldered on top of a resistor surface, such as the conveyor 112. When convenient, a reinforcement mat, such as a glass grille 114 of open fabric, can be fed onto the conveyor. and direct under the flow of integrated asphalt and glass fibers. The reinforcing mat may be of any type for reinforcing paving sashes, woven or non-woven, of inorganic and inorganic materials, and preferably in the form of a grid or open weave. The integrated fibers of asphalt and glass are resogen on the upper part of the glass grid to produce a reinforcement prod 116 for sarreteras. Preferably, the integrated asphalt and glass fibers are welded together by a sanding roll 117. Optionally, a sticky reuptake material 118 can be piled to the top of the reinforcement product of the sarrethra from any other source, such as a spreader. 120 of rosé of a sticky response. The sticky re-cover can be any suitable adhesive for bonding the roadway reinforcement product to the road, such as an asphalt adhesive. Preferably, the sticky re-cover is tacky at a temperature of 25ac, as measured by the ASTM D-2131 rolling ball test, according to the sual, values above about 40mm are considered non-tacky. An opsional professing to flatten a sticky re-cover is shown in Figure 8. A second sack of asphalt fibers 126, produced by the second asphalt spinner 128, can be laid on top of the reinforcement prod from the sarretera. Preferably, the second asphalt spinner is in general alignment as the first asphalt spinner, along the length of the picking surface. The sorbed asphalt 130, supplied to the second asphalt spinner, is of a supersaturation the sual srea sticky fibers. This can be accomplished in several ways, such as using an asphalt is a high recession of penetration. Preferably, the asphalt fibers have a diameter in the approximate range of 635 x 103 to 1524 x 103 μm. When the re-covering or sticky layer is applied in the form of sticky asphalt fibers, sticky coating 118, applied by spraying, is usually not necessary. Preferably, the sticky asphalt fibers are tacky at a temperature of 25ac.

As shown in Figure 9, the reinforcement prod 116 for sarretera has a reinforcing mat or glass grid 114 as its top layer, since the inverted product of the orientation shown in Figure 8 is applied to the road. In the middle of the product is the layer 122, which is made of integrated fibers of glass 106 and asphalt 110. The bottom layer is the sticky coating 118. Finally, the road reinforcement product may contain a release paper 124 to facilitate the unwinding of the product at the site. paving of the road. It will be apparent from the foregoing that various modifications to the invention can be made. However, they are considered within the scope of the invention.

INDUSTRIAL APPLICABILITY The invention can be useful in the manufacture of asphalt fiber and glass fiber reinforcement products, and in the manufacture of asphalt shingles for tesins.

Claims (20)

1. NOVELTY OF THE INVENTION Having described the present invention, a novelty is considered as such and, therefore, it is claimed that it is contained in the following: CLAIMS 1. A method to obtain a reinforcement prodrug for a sarretera, the sual somprende: a ) to establish a veil, moving downwards, of reinforcing fibers of a material that softens by salor; b) supplying melted asphalt to a rotary asphalt spinner, soldered within the veil of reinforcing fibers; s) separating the asphalt fibers from the asphalt spreader, whereby the asphalt fibers in the sontaste are the veil, to integrate these asphalt fibers are the reinforcing fibers; d) feeding a reinforcing mat under the asphalt spinner; and e) collecting the asphalt and reinforcing fibers integrated on the upper part of the reinforcing mat, to produce a reinforcement product for the road.
2. 2. The method, according to claim 1, suals the step of flattening a sticky re-covering on the upper part of the reinforcement product for the sarretera.
3. 3. The method, according to claim 2, in the sual the sticky re-cover is a sap of asphalt fibers, the suals are sticky at 252c.
4. 4. The method, according to claim 1, in the sual the step of centrifugation produces asphalt fibers having a diameter in the approximate range of 635 x 103 to 1524 x 103 μm.
5. 5. A method for obtaining a road reinforcement product, which comprises: a) stabilizing a veil, moving downwards, of reinforcing fibers of a material that softens by salor, produced on top of a surface of resilience; b) supplying molten asphalt to a first rotary asphalt spinner, soldered within the web of the reinforcing fibers and above the surface of the reinforcement; s) separating the asphalt fibers from the first asphalt spinner, then directing the asphalt fibers in contact with the web, to integrate the asphalt with the reinforcing fibers; d) feeding a reinforcing mat on the picking surface, under the first asphalt spinning machine; e) Resolving the asphalt and reinforcement fibers integrated on the upper part of the reinforcement mat, to produce a reinforcement product for the sarretera; f) supplying the molten asphalt to the second rotary asphalt spinner, placed above the reinforcement product for the sarreter, the first and second asphalt spinners are generally aligned along the length of the picking surface; g) separating the asphalt fibers from the second asphalt spinner, the asphalt fibers of the second asphalt spinner are sticky at 25 ° C; and h) recovering the sticky asphalt fibers on top of the road reinforcement product.
6. 6. The method, according to claim 5, in the sual the first centrifugation stage produces asphalt fibers having a diameter within the approximate range of 635 x 103 to 1524 x 103 μm.
7. 7. The method, according to claim 5, in the second stage of centrifugation produces asphalt fibers having a diameter in the approximate range of 635 x 103 to 1524 103 μm.
8. 8. A method to obtain a reinforcement product for the site, the sual is expected to: a) supply molten asphalt to a rotary asphalt spinner; b) separating the asphalt fibers from the asphalt spinning machine; s) feeding a reinforcing mat under the asphalt spinner; and d) resoger the asphalt fibers on the upper part of the reinforcing mat, to produce a reinforcement product for the sarretera.
9. 9. The method, according to claim 8, suals the step of piling a sticky coating on the top of the highway reinforcing product.
10. 10. The method according to claim 8, wherein the sticky coating is a saucer of asphalt fibers, the suals being sticky at 25ac.
11. 11. A produsto reinforcement for sarretera, obtained from agreement are the method of the reivindisasión 1.
12. 12. A reinforcement product for sarretera, obtained from agreement, is the method of claim 2.
13. 13. A road reinforcement product, obtained according to the method of claim 3.
14. 14. A reinforcement product for sarretera, obtained from agreement are the method of claim 4.
15. 15. A reinforcement product for sarretera, obtained from agreement, is the method of claim 5.
16. 16. A road reinforcement product, obtained according to the method of claim 6.
17. 17. A reinforcement product for road, obtained according to the method of claim 7.
18. 18. A reinforcement product for road, obtained according to the method of claim 8.
19. 19. A reinforcement product for sarretera, obtained from agreement are the method of claim 9.
20. 20. A produsto reinforcement for sarretera, obtained from agreement are the method of claim 10.