EP0200700A2 - Einrichtung und Verfahren zum Beschichten eines Trägers mit einer ununterbrochenen Granulatschicht - Google Patents

Einrichtung und Verfahren zum Beschichten eines Trägers mit einer ununterbrochenen Granulatschicht Download PDF

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Publication number
EP0200700A2
EP0200700A2 EP86870039A EP86870039A EP0200700A2 EP 0200700 A2 EP0200700 A2 EP 0200700A2 EP 86870039 A EP86870039 A EP 86870039A EP 86870039 A EP86870039 A EP 86870039A EP 0200700 A2 EP0200700 A2 EP 0200700A2
Authority
EP
European Patent Office
Prior art keywords
support
aggregates
layer
installation according
aforementioned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86870039A
Other languages
English (en)
French (fr)
Other versions
EP0200700A3 (de
Inventor
Jean-Frédéric Moreau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Revetements de Couvin
Original Assignee
Revetements de Couvin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Revetements de Couvin filed Critical Revetements de Couvin
Publication of EP0200700A2 publication Critical patent/EP0200700A2/de
Publication of EP0200700A3 publication Critical patent/EP0200700A3/de
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/30—Processes for applying liquids or other fluent materials performed by gravity only, i.e. flow coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/04—Apparatus specially adapted for applying particulate materials to surfaces the particulate material being projected, poured or allowed to flow onto the surface of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
    • B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders

Definitions

  • the subject of the present invention is a method of coating a substantially flat quadrilateral face of a support with a continuous layer of aggregates.
  • the existing methods essentially consist of either coating the face of the support to be coated with the layer of aggregates with a material which makes these aggregates adhere to the support, depositing the layer of aggregates in their natural state on the coated face of the support, coat, using said material, the upper face of the layer of aggregates deposited on the support and harden the aforementioned material, either to mix the aggregates and the aforementioned material at the time of use and to spread this mixture over the support with trowel or float.
  • the object of the invention is to remedy these drawbacks and to provide a method for coating the material with each aggregate constituting the layer to be deposited on the support in order to obtain perfect adhesion of the aggregates to the latter, using a small quantity of said material, which makes it possible to keep the aggregates their natural appearance; this process also offers the advantage of authorizing a high production rate.
  • the aggregates are freed of foreign matter, they are brought to a level higher than that of the support, the flow rate of the aggregates is adjusted, they are distributed to form the aforementioned layer, this last, towards the support, by gravity, during the fall of the layer, the aggregates which form it are coated with a material which makes these aggregates adhere to the support, the place of fall of the layer is moved relative to the support , in a direction parallel to one of the sides of the latter, the relative speed of movement of said location is adjusted and the material coating the aggregates placed on the support is allowed to harden.
  • the aggregates are washed to rid them of foreign matter and they are kept in the required moist state until they are coated with the aforementioned material.
  • the layer of aggregates deposited on the support is coated, using the aforementioned material, at a location close to the place of fall of the above-mentioned layer, as well as the face of the support to be coated in a place close to the place of fall of the above-mentioned layer.
  • the aggregates and the abovementioned material are charged electrically, with opposite polarities.
  • the invention also relates to an installation for implementing the above method.
  • this installation comprises in particular means for ridding the aggregates of foreign matter, means for raising said aggregates to a level higher than that of the support in the form of a quadrilateral, means for regulating the flow of aggregates, means for distribute the latter and form a continuous layer deposited on the support by gravity, means for coating the aggregates with this layer, during their fall, material capable of making the aggregates adhere to the support, means for moving the drop location of the layer with respect to the support in a direction parallel to one of the sides of the latter and means for adjusting the relative speed of movement of said place.
  • the invention also relates to a support coated with a layer of aggregates by the above process and produced using the above installation.
  • the method according to the invention is intended for coating a face 1, in the form of a substantially flat quadrilateral, of a support 2 by a continuous layer 3 of aggregates 4.
  • a face 1 in the form of a substantially flat quadrilateral, of a support 2 by a continuous layer 3 of aggregates 4.
  • the aggregates of foreign matter in 5 are brought to a higher level 6 than that of the support 2, we adjust, in 7, the flow of the aggregates, we distribute them to form the layer 3, we move the latter , at 8, towards the support, by gravity, during the fall of the layer, the aggregates 4 which form it are coated with a material capable of making the aggregates adhere to the support, the drop location 9 is moved from the layer relative to the support 2 in a direction parallel to one of the sides of the latter, the relative speed of movement of said place 9 is adjusted and the above-mentioned material is allowed to harden at 10, coating the aggregates placed on the support.
  • the aggregates 4 are coated with the above-mentioned material, as well as to facilitate the adhesion of the said material, consisting of an aqueous dispersion of an acrylic copolymer free of plasticizer, to the aggregates, the aggregates 4 are washed, in 5, to rid them of foreign materials and they are kept in the required moist state until they are coated with this material.
  • the said material consisting of an aqueous dispersion of an acrylic copolymer free of plasticizer
  • a finishing product such as shown in FIG. 6, is advantageously projected onto 15 the layer of aggregates 3 deposited on the support 2, this projection taking place outside the zone 13 where the aggregates are coated with the aforementioned material.
  • the location 15 of the projection of the water vapor is of course chosen so that the latter reaches the layer of aggregates before the curing of the material begins.
  • the face 17 of the support 2 which is opposite to the face 1 receiving the layer 3 of aggregates is advantageously heated at 16, as shown in FIG. 6, this heating taking place in the area of said support which is coated with the aforementioned material in the uncured state.
  • the installation according to the invention for the implementation of the above process comprises, as shown in FIG. 1, means 18 for ridding the aggregates 4 of foreign matter, means 19 for raising said aggregates to a level higher than that support in the form of a quadrilateral, means 20 for regulating the flow of aggregates, means 21 for distributing the latter and forming a continuous layer 3 deposited on the support 2 by gravity, means 22 for coating the aggregates with this layer, during their fall, in 8, of the material capable of making the aggregates adhere to the support, means 23 for moving the drop location 9 of the layer 3 relative to the support 1 in a direction parallel to one of the sides of the latter and means not shown for adjusting the speed of movement of said location 9, heating means 24 being advantageously arranged, as shown in Figure 6, to accelerate the hardening of the aforementioned material coating the aggregates constituting the layer 3 placed on the support 2.
  • the means 18 for ridding the aggregates of foreign matter advantageously comprise a washing enclosure at the outlet of which are arranged heating elements 24 intended to dry, at least partially, the aggregates.
  • the means 20 for regulating the flow of the aggregates and the means 21 for distributing them and forming a continuous layer thereof comprise, on the one hand, an inclined table 25 on the upper face of which the aggregates 4 move by gravity, which has, parallel to its lower edge 26, over the entire length and close to the latter, an element 27 projecting from this upper face, the section of which is substantially semi-circular, and, on the other hand, a vibration generator 28 connected to the table 25, means not shown being provided, on the one hand, vary the inclination of the table and, on the other hand, modify the frequency and amplitude of the vibrations provided by the generator 28.
  • the heating means 24, intended to at least partially dry the aggregates 4, are advantageously constituted, as shown in FIG. 6, on the one hand, by ramps 29 arranged to emit infrared radiation directed towards the upper face of the table inclined 25 and, on the other hand, by resistors 30 associated with the upper face of said table.
  • the means 22 for coating the aggregates 4 with the above-mentioned layer of material may consist of a single nozzle ramp 31 disposed parallel to the support 2 and to the layer 3, at 8, and the length of which is substantially equal to the dimension of the layer 3 taken parallel to the ramp 31, the nozzles being oriented to disperse said material, to coat the aggregates 4 of the layer, in the area 8 above.
  • the nozzle ramp 31 is located between the table 25 and the support 2, the nozzles being further oriented to disperse, at 11, the aforementioned material on the face 1 of the support to be coated in a nearby location from the drop location 9 of layer 3.
  • the single nozzle ramp 31 can also be located above the support coated with the layer 3 of aggregates, the nozzles being oriented to disperse the material in zone 8 and, at 13, on the layer of aggregates deposited on the support, in a place close to the place of fall 9 of the layer on said support.
  • a fixed screen 32 is provided arranged at the opposite of the nozzle boom 31, with respect to the layer of aggregates moving from the table 25 towards the support 2.
  • the installation comprises a high voltage source, not shown, one of the poles of this source being connected to the table 25, while the other pole is connected to the ramp of nozzles 31.
  • a screen 32 this is also connected to the same pole as that of the ramp 31 so that the material moving towards the screen is pushed back and falls either on face 1 of the support ( Figure 3), or on the aggregate layer 3 already deposited on the support ( Figure 2).
  • the aforementioned means 23 of the installation consist of an endless conveyor belt 33 driving the support in a direction 34 perpendicular to the layer 3 of aggregates moving by gravity, in 8, towards the support 2.
  • the installation according to the invention can also comprise, as shown in FIGS. 4 to 6, two sprinkler ramps 31, 31 ′, arranged parallel to the lower edge 26 of the table 25 and whose length corresponds substantially to the dimension of the layer taken parallel to said edge, these ramps 31, 31 ′, being arranged on either side of the layer of aggregates moving, at 8, from the table 25 to the support 2, each of these ramps being located between this layer 3 of aggregates and a fixed screen 32, advantageously loaded with the same polarity as the sprinklers.
  • These screens 32 are advantageously profiled, as shown in FIG. 5, in order to bring the above-mentioned material approaching said screens 32, on the one hand in the flow of material emitted by the nozzles and, on the other hand, on the face 1 of the support 2.
  • the screens 32 used preferably enclose the material diffusion zone (s) practically hermetically in order to prevent it from spreading into the atmosphere.
  • the installation comprises, arranged parallel to the above-mentioned sprinkler nozzle ramp 31, means 35 for dispensing a product capable of accelerating the hardening of the above-mentioned material, these means being arranged to garnish with this produces the side 1 of the support 2 to be coated before it is in contact with the aforementioned material.
  • This installation comprises at least one ramp 36, supplied with steam, arranged parallel to the ramps 31, 31 ′, the jets of this steam ramp 36 being arranged to distribute the steam on the layer 3 of aggregates disposed on the support 2, downstream of the zone 13 where the aforementioned material is dispersed on the aggregate and this in order to smooth the material before it hardens.
  • This hardening can be accelerated by means of an oven 37 (FIG. 6) which comprises a preheating chamber 38 intended to avoid any thermal shock, this chamber and the oven being advantageously heated by ramps 39 with infrared radiation.
  • the installation comprises, as shown in FIG. 6, a fan 40 blowing hot air on the face of the support opposite to the face 1 thereof, in zones 16 where the support is in contact with uncured material and this so as to accelerate the hardening of the latter so that it does not escape by gravity from the support.
  • the means 23 for driving the support 2 from a coil 41 of said support could advantageously be constituted by a motor shaft 42 on which is mounted said coil, an endless belt 33 with mesh, through which hot air can be blown on the face of the support opposite to that which will receive the layer of aggregates 3, which moves the support to coat it with aggregates and an accumulator device 43 arranged between the coil 41 and the endless belt 33.
  • This device 43 can accumulate a certain length of unwound support resulting from the differences between the constant linear speed of the endless belt and the variable unwinding speed of the reel and it comprises, on the one hand, a play two cylinders 44 and 45, between which the support passes, disposed upstream of the endless belt and whose cylinder 44 is driven from the belt, so that its linear speed is equal to the linear speed of said belt and, on the other hand, at least one movable cylinder 46 which maintains the length unrolled between the set of cylinders and the coil.
  • a cylinder 47 arranged to bear on the layer when the latter has been deposited on the support, and possibly a vibrating table 48, placed under the upper end of the endless belt 33 opposite the cylinder 47.

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  • Application Of Or Painting With Fluid Materials (AREA)
  • Road Paving Machines (AREA)
EP86870039A 1985-04-03 1986-03-26 Einrichtung und Verfahren zum Beschichten eines Trägers mit einer ununterbrochenen Granulatschicht Withdrawn EP0200700A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/214780A BE902107A (fr) 1985-04-03 1985-04-03 Procede de revetement d'un support par une couche continue de granulats et installation pour la mise en oeuvre de ce procede.
BE214780 1985-04-03

Publications (2)

Publication Number Publication Date
EP0200700A2 true EP0200700A2 (de) 1986-11-05
EP0200700A3 EP0200700A3 (de) 1987-05-27

Family

ID=3843871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86870039A Withdrawn EP0200700A3 (de) 1985-04-03 1986-03-26 Einrichtung und Verfahren zum Beschichten eines Trägers mit einer ununterbrochenen Granulatschicht

Country Status (4)

Country Link
US (1) US4693911A (de)
EP (1) EP0200700A3 (de)
JP (1) JPS61234971A (de)
BE (1) BE902107A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829695A (en) * 1988-02-01 1989-05-16 Hoecherl Carl H Waterfowl decoy protective coating
NL8901175A (nl) * 1989-05-10 1990-12-03 Koppens Maschf Bv Inrichting voor het vormen van een continue laag korrelvormig en/of poedervormig stroombaar materiaal, alsmede een paneermachine met een dergelijke inrichting.
US5380552A (en) * 1992-08-24 1995-01-10 Minnesota Mining And Manufacturing Company Method of improving adhesion between roofing granules and asphalt-based roofing materials
TWM599894U (zh) * 2020-05-14 2020-08-11 佳格食品股份有限公司 噴料滾筒系統

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2270341A (en) * 1939-12-02 1942-01-20 Harper J Ransburg Method of coating granular materials
DE922173C (de) * 1952-11-09 1955-01-10 Kalk Chemische Fabrik Gmbh Verfahren zur Herstellung von lagerbestaendigen, frei rieselnden Ein- und Mehrstoffduengemitteln
GB1150370A (en) * 1967-12-20 1969-04-30 Duria Werk Karl Kempf G M B H Device for Sprinkling Powder on to Supports
US4243696A (en) * 1979-01-22 1981-01-06 W. S. Rockwell Company Method of making a particle-containing plastic coating

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313082A (en) * 1941-05-16 1943-03-09 John U Birnie Process for making coherent materials
US2707690A (en) * 1951-04-10 1955-05-03 Owens Corning Fiberglass Corp Method and apparatus for applying liquid materials to fibers
US2707847A (en) * 1952-05-24 1955-05-10 American Rock Wool Corp Means for treating mineral wool fibers
US4478896A (en) * 1982-11-15 1984-10-23 Macmillan, Bloedel Limited Apparatus for blending wood strands with a liquid resin

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2270341A (en) * 1939-12-02 1942-01-20 Harper J Ransburg Method of coating granular materials
DE922173C (de) * 1952-11-09 1955-01-10 Kalk Chemische Fabrik Gmbh Verfahren zur Herstellung von lagerbestaendigen, frei rieselnden Ein- und Mehrstoffduengemitteln
GB1150370A (en) * 1967-12-20 1969-04-30 Duria Werk Karl Kempf G M B H Device for Sprinkling Powder on to Supports
US4243696A (en) * 1979-01-22 1981-01-06 W. S. Rockwell Company Method of making a particle-containing plastic coating

Also Published As

Publication number Publication date
US4693911A (en) 1987-09-15
JPS61234971A (ja) 1986-10-20
EP0200700A3 (de) 1987-05-27
BE902107A (fr) 1985-07-31

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