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WO2013087956A1 - Équipement électromécanique pour appliquer des mélanges de produits solides et liquides pour le nettoyage et la restauration de surfaces et procédés d'application des mélanges - Google Patents

Équipement électromécanique pour appliquer des mélanges de produits solides et liquides pour le nettoyage et la restauration de surfaces et procédés d'application des mélanges

Info

Publication number
WO2013087956A1
WO2013087956A1 PCT/ES2012/000308 ES2012000308W WO2013087956A1 WO 2013087956 A1 WO2013087956 A1 WO 2013087956A1 ES 2012000308 W ES2012000308 W ES 2012000308W WO 2013087956 A1 WO2013087956 A1 WO 2013087956A1
Authority
WO
WIPO (PCT)
Prior art keywords
solid
gun
liquid
solids
cleaning
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.)
Ceased
Application number
PCT/ES2012/000308
Other languages
English (en)
Spanish (es)
Inventor
Josep Gisbert Aguilar
Manuel BLANCO DOMINGUEZ
Juan Diego JARÍA GAZOL
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.)
Universidad de Zaragoza
Original Assignee
Universidad de Zaragoza
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 Universidad de Zaragoza filed Critical Universidad de Zaragoza
Publication of WO2013087956A1 publication Critical patent/WO2013087956A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/061—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with several liquid outlets discharging one or several liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1431—Arrangements for supplying particulate material comprising means for supplying an additional liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/149—Spray pistols or apparatus for discharging particulate material with separate inlets for a particulate material and a liquid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2486—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device with means for supplying liquid or other fluent material to several discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2491—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2497—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device several liquids from different sources being supplied to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/20—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising

Definitions

  • the present invention relates to an electromechanical equipment for the application of mixtures of solid and liquid products for the cleaning and rehabilitation of surfaces comprising a set of tanks where the products to be projected on the surface are stored, a gun that carries out the projection of the products on the surface and an air compressor, with its hoses and pressure reducer connected to both the tanks and the gun.
  • the object of the invention consists of a device that allows the previous tasks to be carried out continuously by means of a method of applying the mixture that has a greater impact on the abrasive or pickling character of cleaning, or of rehabilitation by coating according to the state of each point of The surface to be treated. Due to its special configuration, the electromechanical equipment allows the change of cleaning tasks to surface coating tasks and allows to apply mortar layers practically in succession, without pauses, thereby increasing the versatility of the equipment to carry perform both types of tasks, cleaning and coating rehabilitation.
  • Electromechanical equipment is known in the state of the art to carry out the cleaning and rehabilitation of surfaces, which are constituted by a set of tanks where the products to be projected on the surface are stored, a gun that carries out the projection of the products on the surface and an air compressor, with their corresponding hoses and pressure reducer connected to both the tanks and the gun.
  • the architectural surfaces on which the cleaning and rehabilitation tasks are carried out and which are constituted by stone, concrete, mortars, ceramics and the like can present several problems:
  • the third is usually the irregularity of any rehabilitated surface that, in need of specific local treatments, requires manual applications and hinders the pace of work with the mortar paste projection equipment.
  • the electromechanical equipment of the present invention solves all the above inconveniences since it allows the change of the cleaning tasks to the surface coating tasks and that allows to apply mortar layers practically in succession, without pauses, thereby increasing the versatility of the equipment to carry out both types of tasks, cleaning and coating.
  • the present invention relates to an electromechanical equipment for the application of mixtures of solid and liquid products for the cleaning and rehabilitation of surfaces that allows to carry out a continuous variable dosage, so it is not necessary to perform several cleaning phases on the surface treated as it allows a complex treatment continuously.
  • the invention also presents, with respect to conventional treatments, additional advantages such as the possibility of projecting low density solids as well as applying very fine mortar layers and with excellent adhesions between the different layers of the coating given the speed with which they are applied over each other. .
  • the equipment of the invention is used both for removal treatments of old surface coatings and dirt of all kinds and for rehabilitation treatments in which it generates thin layers of mortar with the desired water / aggregate / binder dosage at all times.
  • the electromechanical equipment of the invention projects a mixture or paste formed by a liquid, which can be water, demineralized water, water with cleaning products, organic solvents, etc., high density solids, such as commercial abrasives, aggregate for mortar or similar and low density solids such as textile or cellulose fibers, absorbent clays and binders of mortar.
  • a liquid which can be water, demineralized water, water with cleaning products, organic solvents, etc.
  • high density solids such as commercial abrasives, aggregate for mortar or similar
  • low density solids such as textile or cellulose fibers, absorbent clays and binders of mortar.
  • the electromechanical equipment comprises a block of deposits formed by a set of deposits between which there is a deposit of particles of fine granulometry and low density with an agitation / anti-accompaniment system and a Venturi drive system.
  • This deposit of fine granulometry and low density stores mortar binders, such as lime, plaster or cement, textile or cellulose fibers, clays such as kaolinite, sepiolite, bentonite or the like and absorbent gel particles. In general they should be particles with a density of less than 4 g / cm 3 .
  • the tolerable particle size depends on the density of the particle, and the formula must be followed:
  • d 2 x T ⁇ 600 where d is the density in g / cm 3 and T the particle size in micrometers.
  • cellulose fibers with a density of 1.2 g / cm 3 cannot exceed particle sizes of 416 micrometers for the tank to function properly.
  • the reservoir block also comprises a deposit of particles of coarse granulometry and high density with a vibration-based motor-based anti-pick-up system driven by compressed air.
  • a vibration-based motor-based anti-pick-up system driven by compressed air.
  • This deposit of coarse granulometry and high density tolerates particles of density greater than 2 g / cm 3 and granulometries of up to 2000 micrometers.
  • the decision of the deposit to be chosen is made with the formula of the tolerable particle size for the fine particle size and low density deposit , choosing the deposit of coarse granulometry and high density for values greater than 600 in said formula.
  • the tank block also includes a liquid reservoir with a booster pump, a hose connection port and an electrical connection box with a normal and safety switch.
  • the electromechanical equipment also includes an air compressor that has a postcooler coupling that favors air drying, thus reducing humidity.
  • the electromechanical equipment comprises a spray gun that works with compressed air, and allows mixing a liquid and at least one solid from the low and high density solids described above.
  • This gun comprises a Venturi system, a solids drag chamber and a water passage chamber, independent of the solids drag chamber.
  • the gun comprises a nozzle with holes in its periphery where the liquid comes out with an angle of inclination ⁇ with respect to the projection axis of the gun, while the solid beam / s comes out through the center of the gun so that the liquid wraps the solid / s outlet leaving the mixture out of the gun.
  • the electromechanical equipment comprises means for regulating the flow of liquid in the gun, regulation means arranged in the tube for feeding the liquid to the gun.
  • the electromechanical equipment comprises means of regulation of the flow of solid required in the mixture, where in case of presenting more than one solid, its proportion is established by means of a regulating key of the flow of solids of the high density solids deposit.
  • said solids are mixed in a special piece attached to the gun (This point is not clear to us, since the view of the figure of the multi-stage mixing gun, the mixing of the two types of solids would take place inside the gun itself).
  • the electromechanical equipment allows the most appropriate treatment to be projected at each point of the surface, covering different possibilities such as dry abrasion, water abrasion and projection of fibrous substrates mixed with the appropriate liquid and that absorb fats, oils or salts.
  • the invention relates to an electromechanical equipment for the application of mixtures of solid and liquid products for cleaning and rehabilitation of surfaces comprising:
  • the invention also relates to a method of applying a mixture or paste by means of the electromechanical equipment up to now or described, which comprises the following steps:
  • Figure 1. Shows a diagram of the elements that make up the block of deposits.
  • Figure 3. Shows the basic structure of the multi-stage mixing gun.
  • Figure 4. Shows a detail of the projection area of the gun.
  • the electromechanical equipment comprises a block of deposits comprising:
  • a first tank of low density solids (5) which is equipped with stirring means (1 1) that also project compressed air to prevent the caking of solids and that is introduced into the tank through a fork (no shown) of a compressed air inlet duct (1) from a compressor that supplies air to this reservoir (5) and to the reservoirs described below (9, 8).
  • the stirring means (1 1) comprise a shaft (12) provided with perforated blades (13) through which compressed air exits while the blades
  • This low density solids deposit (5) comprises an outlet duct (2) that conducts the solids to a projection gun (15).
  • An electric motor (6) that transmits the rotation to the shaft (12) of the agitation means (1 1) and an electrovalve (not shown) that produces a discontinuous piston in the compressed air injections of the blades (13).
  • a second tank of high density solids (9) that has a hopper shape and comprises a stirring and anti-jam valve moved by compressed air from a compressor that is introduced into the tank through another branch of the air inlet duct tablet (1).
  • This second tank (9) comprises a lid that allows a hermetic seal with a compressed air intake to generate direct discharge in the case of thicker and denser particle sizes.
  • This high density solids tank (9) comprises an outlet duct (3) that conducts the solids to a projection gun (20).
  • a third liquid reservoir (8) intended to contain water or the solution used as a cleaning product.
  • This liquid reservoir (8) comprises an outlet duct (4) that conducts the liquids to the projection gun (15, 20), and a bifurcation of the compressed air inlet duct (1).
  • Each of the tanks (5, 9, 8) comprises removable fasteners (not shown) and can be replaced by a tank with a solid / liquid of different composition.
  • the air compressor (not shown) of the electromechanical equipment comprises a postcooler to dry the air, in addition to compressed air hoses and a compressed pressure regulator to regulate the flow of said compressor.
  • the electromechanical equipment additionally incorporates two types of guns:
  • a simple mixing gun (15) mixing a solid with a liquid and comprising a first connection (17) with the low density solids tank (5), a second connection (19) with the liquid tank and a third connection (16) with the compressor.
  • it is a suction gun that uses the air coming from the compressor to project the solid using the Venturi effect, while the liquid It is driven by the pump (7) described above.
  • a multi-stage mixing gun (20) that mixes two different solids with a liquid.
  • Said gun comprises a first connection (17) with the low density solids tank (5), a second connection (19) with the liquid tank, a third connection (16) with the compressor and a fourth connection (18) with the deposit of high density solids (9).
  • It is a mixed direct-suction and suction gun in which the air from the compressor is used to project the solid using the Venturi effect, where the impulsion of the high density particles is given by direct thrust of compressed compressed air and the liquids are impelled by the pressure of the pump (7).
  • the equipment comprises means for regulating (24) the flow of liquid in the gun, regulating means arranged in the tube for feeding the liquid to the gun and comprising a flow regulating key.
  • the electromechanical equipment comprises means for regulating (25) the required solid flow comprising a trigger of compressed air that regulates the amount of air that passes through the gun (15, 20) and thus the flow of solids in the same, where in case the mixture presents low density solids and high density solids, its proportion is established by means of a regulating key of the solids flow rate of the high density solids deposit (9).
  • the solid / s beam (14) exits through the center of the gun (15, 20) and the liquid exits from the periphery thereof by three or six equidistant perforations (21) arranged in a nozzle or projection head (22 ) of the gun (15, 20), forming an inclination angle ⁇ of 15 Q with respect to the projection axis of the gun (15, 20), so that the solid / s and liquid mixture occurs outside the gun after that both the liquid and the solid / s have been projected.
  • liquid threads define a cone with the base in the nozzle or projection head (22) of the gun (15, 20) and its vertex at its intersection with the solid / s beam (14) so that a paste (10) is formed at the vertex, and that paste ( 10) is projected against the surface (23) to be treated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

La présente invention concerne un équipement électromécanique pour appliquer des mélanges de produits solides et liquides pour le nettoyage et la restauration de surfaces. Ledit équipement comprend : un ensemble de réservoirs dans lesquels sont stockés des produits à projeter sur la surface, un pistolet qui assure la projection des produits sur la surface et un compresseur d'air raccordé aux réservoirs et au pistolet. L'équipement permet d'effectuer les tâches précédentes de manière continue par un procédé d'application du mélange qui concerne davantage le caractère abrasif ou décapant du nettoyage, ou de la restauration par revêtement selon l'état de chaque point de la surface à traiter. L'équipement permet de passer d'une tâche à une autre et d'appliquer des couches de mortier de manière quasi successive, sans pauses, ce qui permet d'augmenter sa polyvalence.
PCT/ES2012/000308 2011-12-14 2012-12-13 Équipement électromécanique pour appliquer des mélanges de produits solides et liquides pour le nettoyage et la restauration de surfaces et procédés d'application des mélanges Ceased WO2013087956A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP201132010 2011-12-14
ES201132010A ES2414289B1 (es) 2011-12-14 2011-12-14 Equipo electromecánico para la aplicación de mezclas de productos sólidos y liquidos para la limpieza y rehabilitación de superficies y procedimiento de aplicación de la mezcla

Publications (1)

Publication Number Publication Date
WO2013087956A1 true WO2013087956A1 (fr) 2013-06-20

Family

ID=48611886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2012/000308 Ceased WO2013087956A1 (fr) 2011-12-14 2012-12-13 Équipement électromécanique pour appliquer des mélanges de produits solides et liquides pour le nettoyage et la restauration de surfaces et procédés d'application des mélanges

Country Status (2)

Country Link
ES (1) ES2414289B1 (fr)
WO (1) WO2013087956A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475053A (en) * 1935-05-11 1937-11-11 Michel And Marchal Improvements in or relating to apparatus for projecting short fibres and the like
DE3310663A1 (de) * 1983-03-24 1984-10-04 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgeraet
EP0922498A2 (fr) * 1997-12-13 1999-06-16 Usbi, Co. Appareil et procédé d'application de mousse sur un substrat
EP1306136A1 (fr) * 2001-10-23 2003-05-02 Theodorus Alphonsius Niemeijer Procédé et arrangement pour le traitement de surfaces
WO2003037528A2 (fr) * 2001-10-30 2003-05-08 Jay Roth Dispositif et procede permettant de combiner des liquides avec des charges en vue d'une application par pulverisation
WO2011004126A1 (fr) * 2009-07-07 2011-01-13 Fontas Valerie Substrat impregne d'argile projete et son procede de fabrication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475053A (en) * 1935-05-11 1937-11-11 Michel And Marchal Improvements in or relating to apparatus for projecting short fibres and the like
DE3310663A1 (de) * 1983-03-24 1984-10-04 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgeraet
EP0922498A2 (fr) * 1997-12-13 1999-06-16 Usbi, Co. Appareil et procédé d'application de mousse sur un substrat
EP1306136A1 (fr) * 2001-10-23 2003-05-02 Theodorus Alphonsius Niemeijer Procédé et arrangement pour le traitement de surfaces
WO2003037528A2 (fr) * 2001-10-30 2003-05-08 Jay Roth Dispositif et procede permettant de combiner des liquides avec des charges en vue d'une application par pulverisation
WO2011004126A1 (fr) * 2009-07-07 2011-01-13 Fontas Valerie Substrat impregne d'argile projete et son procede de fabrication

Also Published As

Publication number Publication date
ES2414289A1 (es) 2013-07-18
ES2414289B1 (es) 2014-05-20

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