EP1744996A1 - Method for producing a work, pointing and surfacing compound for structural elements and method for producing thereof - Google Patents

Method for producing a work, pointing and surfacing compound for structural elements and method for producing thereof

Info

Publication number
EP1744996A1
EP1744996A1 EP05769258A EP05769258A EP1744996A1 EP 1744996 A1 EP1744996 A1 EP 1744996A1 EP 05769258 A EP05769258 A EP 05769258A EP 05769258 A EP05769258 A EP 05769258A EP 1744996 A1 EP1744996 A1 EP 1744996A1
Authority
EP
European Patent Office
Prior art keywords
coating
coating according
airless
agent
microns
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Withdrawn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
EP05769258A
Other languages
German (de)
French (fr)
Inventor
Claude Liling
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.)
Etex France Building Performance SA
Original Assignee
Lafarge Platres SA
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 Lafarge Platres SA filed Critical Lafarge Platres SA
Priority to EP05769258A priority Critical patent/EP1744996A1/en
Publication of EP1744996A1 publication Critical patent/EP1744996A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/26—Carbonates
    • C04B14/28—Carbonates of calcium
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/14—Minerals of vulcanic origin
    • C04B14/18—Perlite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/14—Minerals of vulcanic origin
    • C04B14/18—Perlite
    • C04B14/185—Perlite expanded
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/024—Emulsion paints including aerosols characterised by the additives
    • C09D5/028—Pigments; Filters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/47—Levelling agents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
    • C04B2111/00672—Pointing or jointing materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds

Definitions

  • the present invention relates to a grouting and surfacing compound for building elements, in particular plasterboard with paper facing, as well as to a method for producing a structure such as a partition, a wall cladding or a wall covering. ceiling.
  • a structure such as a partition, a wall cladding or a wall covering. ceiling.
  • gypsum board it is well known to use gypsum board to make partitions, vertical or inclined elements of cladding or to achieve suspended ceilings or not.
  • These plates are generally made of a substantially plaster core, covered on each of its faces by a sheet serving both as reinforcement and facing and which may be made of cardboard or mineral fibers.
  • gypsum boards are assembled with a first plaster and the joints between the plates are finished with a complementary plaster.
  • a filler (or also called capping) is used in addition to the band, and generally has a relatively low shrinkage, good bonding and good adhesion of the joint strip.
  • a finishing coating is used during the last pass to finish the work so that it has a monolithic surface. According to the application WO-A-9702395 the coating has the same color as the paper facing the plate.
  • the various speakers are usually the plaquiste who lays the plates, the sealer who prepares the joints between plates (often the sealist and the plaquiste are the same, sometimes the sealist and the painter are the same) and the painter who decorates (generally after laying a so-called printing or primary layer, except in the case of the aforementioned WO-A-9702395).
  • painters currently use paints that are applied using a projection nozzle, according to a system called "Airless", namely a container several tens of meters from the place of application and a single pipe with a gun equipped a nozzle at the end, all without air, which offers many advantages of storage between sites, etc.
  • the pressure used is between 120 and 200 bars.
  • the painter responsible for the final appearance, is obliged to return to the joints between the plates and treat them again.
  • the invention therefore relates to a coating comprising, in percentages by weight relative to the total weight of the coating: - from 40 to 60% of a mineral filler having a diameter d50 of between 5 and 20 microns; from 5 to 10% of hydrophobic expanded perlite having a diameter d50 of between 20 and 100 microns; and - from 4 to 20% of a binder.
  • Embodiments of the coating correspond to claims 2 to 18.
  • the invention also relates to a process for preparing the coating according to the invention, according to claims 19 to 21.
  • the invention also relates to a method of making a structure, comprising grouting with a plaster and / or surfacing by applying a plaster, and / or grouting and surfacing by applying a plaster, characterized in that the plaster is applied by the Airless technique or without air.
  • the coating is as described in the present application.
  • Another object of the present invention is therefore a method of producing a structure, comprising the juxtaposition of building elements, optionally the filling of the spacing between the building elements by means of a filler, laying of a strip, the covering of the strip by means of a finishing coating (with possibly the filling by means of a filler) and characterized in that it is used as finishing coating, the coating according to the invention.
  • Another object of the invention is also a method for producing a structure, comprising the surfacing of construction elements by use of the coating according to the invention.
  • Another object of the invention is a method for producing a structure, combining the two preceding objects according to the invention.
  • Another object of the invention is a method of producing a structure, comprising the juxtaposition of gypsum boards having a paper facing, possibly the laying of a strip, the covering of the joint between the plates by means of a delayed-setting coating, characterized in that the coating is applied by the Airless technique or without air.
  • the coating according to the invention comprises, as indicated, the following elements (in% by weight relative to the total weight of the coating): from 40 to 60%, preferably from 40 to 50%, a mineral filler having a diameter d50 of between 5 and 20 microns, preferably between 10 and 15 microns; from 5 to 10%, preferably from 6 to 7.5%, of hydrophobic expanded perlite having a diameter d50 of between 20 and 100 microns, preferably between 30 and 70 microns; and 4 to 20%, preferably 5 to 10%, of a binder.
  • the scale includes water and possibly other components.
  • mineral filler any mineral filler usually employed for the manufacture of a grouting compound can be used.
  • d 50 weight
  • suitable d50 are 10 and 15 microns.
  • inorganic filler mention may be made of calcium carbonate, anhydrous calcium sulphate or dihydrate, magnesium carbonate, dolomite, silicas, silicates, aluminates or others.
  • calcium carbonate CaCO 3 is used .
  • Hydrophobized expanded perlite has a d50 (weight) of between 20 and 100 microns. The apparent density of this perlite is preferably greater than 100 kg / m 3 .
  • the d50 of the particles is generally between 20 and 100 microns, preferably 35 to 70.
  • This perlite is known and may for example be of the Noblite ®, G50, G100, G200, G400 or Sil Cell.
  • the applicant believes that the small particle size and / or a relatively small surface area (compared to a size of 150 microns and more and / or a specific surface area of importance for "classical" perlite) avoids a crushing of the particles, which offers the possibility of passing in a so-called Airless process.
  • the binder used is a binder that is conventional in the coating art and dispersible in the aqueous phase.
  • binders may be in the form of a dry extract or in the form, for example of latex, at 50% in water.
  • binders mention may be made of polyvinyl alcohol homopolymers, polyvinyl acetate homopolymers (plasticized or non-plasticized), ethylene / vinyl acetate copolymers (plasticized or non-plasticized EVA), vinyl ethylene / versatate, vinyl acetate / vinyl versatate, polyacrylic, copolymers vinyl acetate / acrylic, styrenic / acrylic copolymers, styrene / butadiene, vinyl acetate terpolymers / vinyl versatates / vinyl maleates, vinyl acetate / vinyl versatate / acrylic, vinyl acetate / vinyl ester of an acid terpolymer ( long-chain) / acrylic acid ester, acrylic terpolymers and mixtures thereof.
  • binders co- or terpolymer vinyl acetate / vinyl copolymer and vinyl copolymer / styrene copolymer / acrylic.
  • these polymers are provided either in powder form or as a dispersion in water (generally at a rate of about 50%).
  • the proportion of organic binder is preferably between 5 and 10% of the total weight of the coating.
  • the coating generally comprises one or more of the following other components: a slip agent in an amount of, for example, 0.5 to 10%, preferably 1 to 5%; this sliding agent may be a silicate agent (different from the mineral filler), in particular an attapulgite-type clay, or it may be any known slip agent, for example talc, mica or a stearate, especially zinc; a workability agent which is a water-retentive and thickening agent, in an amount of, for example, from 1 to 15%; this water-retaining agent may be methylhydroxyethylcellulose; an antifoaming agent, in an amount of, for example, 1 to 15 ⁇ b; this antifoam agent is for example a nonionic surfactant; a silicone derivative, in an amount for example from 1 to 15%; this silicone derivative serves, for example, as a pH buffer to obtain a basic medium and / or a viscosity regulator and / or to allow a better detaching, and it can be chosen from
  • a preferred coating according to the invention may comprise, in percentages by weight relative to the total mass of coating: - from 40 to 50% of calcium carbonate having a diameter d50 of between 5 and 20 microns, preferably between 10 and 15 microns ; from 5 to 10%, preferably from 6 to 7.5%, of hydrophobic expanded perlite; from 5 to 10% of a binder; from 1 to 5% of a slip agent comprising a clay and / or a stearate; from 1 to 15 seconds of a water-retaining agent; from 1 to 15% of an anti-foam agent; and optionally - from 1 to 15 ⁇ b of a silicone derivative, preferably a siliconate.
  • the coating according to the invention has a density generally of between 0.9 and 1.3, preferably between 1 and 1.25, more preferably between 1.15 and 1.21.
  • the coating generally has a yield point, i.e. its viscosity decreases when shear is applied and rises when the shear disappears. This allows the application by the Airless technique.
  • the viscosity i.e. its viscosity decreases when shear is applied and rises when the shear disappears. This allows the application by the Airless technique.
  • Brookfield of the coating, at the outlet of the spray nozzle is for example between 0.2 and 0.6 times the original value, preferably between 0.25 and 0.25.
  • the viscosity is measured by a Helipath device (Labomat)
  • the coating may be between 150,000 cps and 1,500,000 cps, preferably between 250,000 cps and 1,200,000 cps, more preferably between 300,000 cps and 950,000 cps.
  • the duration of reconstitution of the flow threshold namely the time between the application and the time when the coating regains a viscosity close to its original viscosity is generally between 1 and 120 min, preferably between 5 and 60 min.
  • the coating according to the invention has a pH which can be controlled by the buffer, which can bring the pH to basic values, for example 8 to 9.5.
  • the coating according to the invention has a dry extract which may vary, for example from 50 to 70%, preferably from 53 to 67%. Depending on the use, higher or lower values may be preferred for this dry extract. For a grouting application, the upper half of the gap is preferred, while for a surfacing application the lower half of the gap is preferred.
  • the coating according to the invention has one or more of the following properties: - have good adhesion to the paper constituting the facing of the plasterboard; there is in fact a cohesive rupture in the plaster of the plate; - Have a good adhesion on a siding of the glass fiber type to allow direct application without removing the siding during renovation projects; - allow good adhesion and good adhesion of the joint strip; - have a color identical to that of the facing paper; have a shrinkage after negligible drying (for example less than 20% as determined by the ring test); - have an absorption of water "close” to that of the facing paper, in order to avoid the use of a layer of primer before the application of a tapestry or painting, according to the teaching of the aforementioned application OA-9702395; - Allow a moderate adhesion of the paper forming the upholstery, so as to make possible one or more subsequent removal (s); - allow easy painting (even when the plaster is used as the only grouting compound); to provide a surface rendering substantially identical to the primer
  • the coating according to the invention may be prepared by mixing its constituents in any order, or in a chosen order or according to a particular process giving good results.
  • the different components are added to the water with stirring.
  • Water can be added at the end to adjust the viscosity, if any.
  • part of the filler typically 5 to 10% by weight
  • a premix of the filler, of the sliding agent, of the handling agent and possibly of a binder in the form of a powder.
  • the mineral filler is preferably added before the premix and the binder after.
  • Water can be added at the end to adjust the viscosity, if any.
  • Any type of mixer is used, preferably a stepped horizontal mixer.
  • Construction methods according to the invention The coating according to the invention can be used for the realization, using gypsum board, many works such as partitions, wall cladding or ceilings, suspended or not.
  • the coating can also be used on other surfaces, for example concrete, especially when the basic pH buffer is present.
  • the coating according to the invention is particularly suitable for the production of work by means of gypsum board with paper facing.
  • the coating according to the invention is preferably used in Airless but it can also be used as a traditional coating.
  • the coating according to the invention can be used as a grout only or as a surfacing coating or both.
  • the realization of a structure by means of plasterboard generally comprises the juxtaposition of plasterboard, the filling of the spacing between the plates by means of a filler, the laying of a strip, the recovery of the strip by means of the filling plaster, then covering the filler with a finishing plaster.
  • the coating according to the invention may be the filling compound and / or the finishing coating.
  • the coating according to the invention is applied by airless spray to the right of the seal (with a suitable nozzle), then a few minutes after its application (when the viscosity has risen) the operator then proceeds to tightening the seal. If the operator has only the joint to do, it will then proceed to a second application of the coating (or another coating according to the invention more particularly dedicated to finishing) and a final smoothing. If the operator has the entire surface to be coated, then he can apply the same surfacing all over the surface without having to finish the joint beforehand; in this case the coatings of grouting and surfacing may be the same or different.
  • the coating is used in the same way.
  • the coating according to the invention allows an operation surfacing and / or printing. After application, the coating can be structured using a spatula, a trowel, a roll with plastic relief or any other instrument depending on the desired relief (relief spatula, rolled, rolled-crushed, etc. .).
  • the coating according to the invention provides sufficient fiberglass adhesion to prevent raking or prior removal of the facing.
  • One of the main characteristics of the coating according to the invention is to be capable of being projected by a so-called airless or airless system, which are materials used by painters in particular. These systems offer advantages of robustness, simplicity of use (compressor out of the rooms with a single pipe in the room, no drying of the product because absence of air, etc.).
  • the invention therefore provides a method of grouting and / or surfacing using a spray-based mineral filler based on airless or airless spray. This Airless technique uses high pressures, up to 200 bar.
  • the coating according to the invention therefore saves considerable time and labor.
  • the invention is also applicable to the field of delayed-setting coatings, the Airless technique being applicable to these coatings.
  • delayed setting coatings are plaster-based coatings (of the hemihydrate), but include a set retarding agent.
  • these agents mention may be made of maleic anhydride, sodium polyacrylate and polyacrylic acids, as well as the protein mixtures available under the name Goldbond High Strength Retarder.
  • the amount is for example from 0.1 to 1% by weight relative to the weight of the hemihydrate.
  • accelerator it is possible to use an accelerator which is then injected into the mixture at the level of the projection nozzle.
  • accelerator it is possible to use aluminum sulphate, aluminum nitrate, ferric nitrate, ferric sulphate, ferric chloride, ferrous sulphate, potassium sulphate, sodium carbonate, sodium bicarbonate, aluminum sulphate being generally preferred.
  • the amount may vary for example between 1 and 5% by weight relative to the weight of the hemihydrate.
  • the additives mentioned above can also be used in the case of setting coating; in particular, polyvinylalcohol can be used. Examples of such compositions are given for example in WO-A-03027038 and OA-03059838.
  • EXAMPLES The following examples are given for illustrative purposes only and are not limiting in nature. The viscosity is measured at the mixer outlet, and possibly after standing. In the examples, the following components are used:
  • the coatings proceed as follows. A horizontal mixer is used. In the starting water the perlite is added with stirring for 2 minutes. The biocide and antifoam are then added, followed by the mineral filler. The premix is then added, then the binder (s) and finally the viscosity adjusting water is terminated, optionally with the siliconate.
  • composition 1 is prepared:
  • Example 2 The following composition 2 is prepared:
  • composition 4 is prepared:
  • Example 5 The following composition is prepared:
  • Example 6 The following composition 6 is prepared:
  • Example 7 The following composition 7 is prepared
  • Example 8 The following composition 8 is prepared:
  • Example 10 The following composition is prepared:
  • composition 11 is prepared:
  • Example 12 Spray joints were made with an Airless M-Tec machine with 25m of 19mm and 15m 15mm pipe, a total of 40m in length.
  • the nozzle has a 60 ° angle and an opening of 51/1000 inches.
  • spraying the coating 10 After gluing the glass grid to the right of the joint, spraying the coating 10 at a distance of 30 cm and then dressing the treated joints a few minutes after application leads to good quality joints.
  • Spraying is now carried out on already treated joints. The same tools are used, but this time the coating 11 is sprayed so as to form a spray band with a width of 70 cm. Without smoothing, a rough decorative granite spray coating is obtained. The smoothing of the spray coating is no problem.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Material Composition (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Medicinal Preparation (AREA)

Abstract

The invention relates to a sealant compound comprising, in weight percent relative to the compound total volume: 40-60 % of mineral filler whose diameter d50 ranges from 5 to 20 microns, 5-10 % of hydrophobic expanded perlite whose diameter d50 ranges from 20 to 100 microns and 4-20 % of binder A method for preparing the inventive compound is also disclosed. Said invention also relates to producing a work provided with joints made of pointing and/or surfacing compound by applying said compound and/or pointing and surfacing by applying the compound which is characterised in that the compound is applied by airless process. According to the inventive method, said sealant compound is embodied such as described in the invention.

Description

PROCEDE DE REALISATION D/UN OUVRAGE, ENDUIT DE JOINTOIEMENT ET DE SURFAÇAGE POUR ELEMENTS DE CONSTRUCTION ET SON PROCEDE DE PREPARATIONMAKING METHOD / ONE BOOK, COATED AND POINTING SURFACING FOR BUILDING COMPONENTS AND METHOD OF PREPARATION
DOMAINE DE L'INVENTION. La présente invention concerne un enduit de jointoiement et de surfaçage pour des éléments de construction, en particulier des plaques de plâtre à parement en papier, ainsi qu'un procédé de réalisation d'un ouvrage tel qu'une cloison, un habillage mural ou un plafond. ARRIERE-PLAN TECHNOLOGIQUE. Il est bien connu d'utiliser des plaques de plâtre pour réaliser des cloisons, des habillages d'éléments verticaux ou inclinés ou pour réaliser des plafonds suspendus ou non. Ces plaques sont généralement constituées d'une âme essentiellement en plâtre, recouverte sur chacune de ses faces par une feuille servant la fois d'armature et de parement et qui peut être constituée de carton ou de fibres minérales. De façon générale, on assemble des plaques de plâtre avec un premier enduit et on finit les joints entre les plaques avec un enduit complémentaire. Un enduit de remplissage (ou aussi appelé de bouchage) est utilisé en complément de la bande, et en général présente un retrait relativement faible, un bon collage et une bonne adhérence de la bande à joint. Un enduit de finition est utilisé lors de la dernière passe pour finir l'ouvrage afin que celui-ci présente une surface monolithique. Selon la demande WO-A-9702395 l'enduit présente la même couleur que le papier de parement de la plaque. Lors de la pose d'un ouvrage sur un chantier, les différents intervenants sont en général le plaquiste qui pose les plaques, le jointiste qui prépare les joints entre plaques (souvent le jointiste et le plaquiste sont les mêmes, parfois le jointiste et le peintre sont les mêmes) et le peintre qui décore (après en général la pose d'une couche dite d'impression ou primaire, sauf dans le cas de la demande WO-A-9702395 précitée) . En général les peintres utilisent actuellement des peintures qui sont appliquées à l'aide de buse de projection, selon un système dit "Airless", à savoir un récipient à plusieurs dizaines de mètres du lieu d'application et un unique tuyau avec un pistolet équipé d'une buse au bout, le tout étant sans air, ce qui offre de nombreux avantages de stockage entre chantiers, etc. En général la pression utilisée est comprise entre 120 et 200 bars. Dans de nombreux cas le peintre, responsable de l'aspect final, est obligé de revenir sur les joints entre les plaques et de les traiter à nouveau. Il existe donc un besoin pour un enduit susceptible d'être appliqué par la même personne et/ou le même matériel Airless, et qui soit approprié pour le jointoiement, tant en bouchage qu'en finition, et pour le surfaçage RESUME DE L'INVENTION. L'invention a donc pour objet un enduit comprenant, en pourcentages massiques rapportés à la masse totale d'enduit : - de 40 à 60% d'une charge minérale ayant un diamètre d50 compris entre 5 et 20 microns; - de 5 à 10% de perlite expansée hydrophobée ayant un diamètre d50 compris entre 20 et 100 microns; et - de 4 à 20% d'un liant. Des modes de réalisation de l'enduit correspondent aux revendications 2 à 18. L'invention a aussi pour objet un procédé de préparation de l'enduit selon l'invention, selon les revendications 19 à 21. L'invention a aussi pour objet un procédé de réalisation d'un ouvrage, comprenant le jointoiement avec un enduit et/ou le surfaçage par application d'un enduit, et/ou le jointoiement et le surfaçage par application d'un enduit, caractérisé en ce que l'enduit est appliqué par la technique Airless ou sans air. Selon un mode de réalisation, l'enduit est tel que décrit dans la présente demande. Un autre objet de la présente invention est donc un procédé de réalisation d'un ouvrage, comprenant la juxtaposition d'éléments de construction, éventuellement le remplissage de l'espacement entre les éléments de construction au moyen d'un enduit de remplissage, la pose d'une bande, le recouvrement de la bande au moyen d'un enduit de finition (avec éventuellement le remplissage au moyen d'un enduit de remplissage) et se caractérisant en ce qu'on utilise comme enduit de finition, l'enduit selon l'invention. Un autre objet de l'invention est encore un procédé de réalisation d'un ouvrage, comprenant le surfaçage d'éléments de construction par emploi de l'enduit selon l'invention. Un autre objet de l'invention est encore un procédé de réalisation d'un ouvrage, combinant les deux objets précédents selon l'invention. Un autre objet de l'invention est un procédé de réalisation d'un ouvrage, comprenant la juxtaposition de plaques de plâtre présentant un parement en papier, éventuellement la pose d'une bande, le recouvrement du joint entre les plaques au moyen d'un enduit à prise retardé, caractérisé en ce que l'enduit est appliqué par la technique Airless ou sans air. D'autres caractéristiques et avantages de l'invention vont maintenant être décrits en détail dans l'exposé qui suit. DESCRIPTION DETAILLEE DE L'INVENTION. Enduit selon l'invention L'enduit selon l'invention comprend, ainsi qu'il a été indiqué, les éléments suivants (en % en poids par rapport au poids total de l'enduit) : - de 40 à 60%, de préférence de 40 à 50%, d'une charge minérale ayant un diamètre d50 compris entre 5 et 20 microns, de préférence entre 10 et 15 microns; - de 5 à 10%, de préférence de 6 à 7,5%, de perlite expansée hydrophobée ayant un diamètre d50 compris entre 20 et 100 microns, de préférence entre 30 et 70 microns; et - de 4 à 20%, de préférence de 5 à 10%, d'un liant. La balance comprend de l'eau et éventuellement d'autres composants . Comme charge minérale, on peut utiliser toute charge minérale habituellement employée pour la fabrication d'un enduit de jointoiement. Il s'agit en général d'une charge minérale de couleur claire, de préférence blanche et dont le diamètre moyen d50 (poids) se situe en général entre 5 et 20 microns, de sorte que l'enduit donne après séchage une surface lisse et puisse être pompé facilement par une machine Airless. Des exemples de d50 approprié sont 10 et 15 microns. Comme exemple de charge minérale, on peut citer carbonate de calcium, sulfate de calcium anhydre ou dihydraté, carbonate de magnésium, dolomie, silices, silicates, aluminates ou autres . De préférence, on utilise du carbonate de calcium CaC03. La perlite expansée hydrophobée présente un d50 (poids) compris entre 20 et 100 microns. La densité apparente de cette perlite est de préférence supérieure à 100kg/m3. Le d50 des particules est généralement compris entre 20 et 100 microns, de préférence 35 à 70. Cette perlite est connue et peut par exemple être de la Noblite®, G50, G100, G200, G400 ou Sil Cell . Sans vouloir être lié par une théorie, le demandeur pense que la dimension faible des particules et/ou une surface spécifique relativement faible (comparée à une dimension de 150 microns et plus et/ou une surface spécifique importante pour de la perlite "classique") permet d'éviter un écrasement des particules, ce qui offre la possibilité de passer dans un procédé dit Airless . Le liant utilisé est un liant classique dans l'art des enduits, dispersable en phase aqueuse. Il peut se présenter sous la forme d'un extrait sec ou sous forme, par exemple de latex, à 50% dans l'eau. A titre d'exemple de tels liants, on peut mentionner les homopolymères d'alcool polyvinylique, les homopolymères acétates de polyvinyle (plastifiés ou non) , les copolymères éthylène/acétate de vinyle (EVA plastifiés ou non) , éthylène/versatate de vinyle, acétate de vinyle/versatate de vinyle, polyacryliques, copolymères acétate de vinyle/acryliques, copolymères styrèniques/acryliques, styrène/butadiène, les terpolymères acétate de vinyle/versatates de vinyle /maléates de vinyle, acétate de vinyle/versatate de vinyle/acryliques, terpolymère vinyl acétate/vinyl ester d'un acide (à chaîne longue) /ester d'acide acrylique, les terpolymères acryliques et leurs mélanges. On préférera utiliser deux liants ou plus, l'un plus spécifiquement dédié à la protection contre l'eau et l'autre plus particulièrement dédié à la plasticité. On pourra ainsi utiliser des combinaisons de liants: co- ou terpolymère acétate de vinyle/copolymère vinylique et copolymère vinylique/copolymère styrènique/acrylique . Lorsque ces polymères sont fournis, ils le sont soit sous forme de poudre, soit sous forme de dispersion dans l'eau (en général selon un taux d'environ 50%) . La proportion de liant organique est préférentiellement comprise entre 5 et 10% du poids total de l'enduit. Outre les éléments indiqués ci-dessus, l'enduit comprend généralement un ou plusieurs des autres composants suivants: - un agent glissant en une quantité par exemple de 0,5 à 10%, de préférence de 1 à 5%; cet agent glissant peut être un agent silicate (différent de la charge minérale) notamment une argile de type attapulgite ou il peut être tout agent glissant connu par exemple talc, mica ou un stéarate, notamment de zinc; - un agent de maniabilité qui est un agent rétenteur d'eau et épaississant, en une quantité par exemple de 1 à 15&; cet agent rétenteur d'eau peut être de la méthylhydroxyéthylcellulose ; - un agent anti-mousse, en une quantité par exemple de 1 à 15§b; cet agent anti-mousse est par exemple un tensio- actif non-ionique; - un dérivé siliconé, en une quantité par exemple de 1 à 15&; ce dérivé siliconé sert par exemple de tampon pH pour obtenir un milieu basique et/ou de régulateur de la viscosité et/ou pour permettre un meilleur détapisser et il peut être choisi parmi les siliconates, les silanes, les huiles de siliconé hydrogénées, les émulsions de siliconé, les émulsions amino-siliconées, les résines alkyl-siloxanes telles que hydrogénométhylpolysiloxane et polydiméthylsiloxane aminé, et leurs mélanges, de préférence les siliconates; - des biocides; - des pigments et azurants optiques; - des agents dispersants; - des anti-gel; - etc . Un enduit préféré selon l'invention peut comprendre, en pourcentages massiques rapportés à la masse totale d'enduit: - de 40 à 50% de carbonate de calcium ayant un diamètre d50 compris entre 5 et 20 microns, de préférence entre 10 et 15 microns; - de 5 à 10%, de préférence de 6 à 7,5%, de perlite expansée hydrophobée; - de 5 à 10% d'un liant; - de 1 à 5% d'un agent glissant comprenant une argile et/ou un stéarate; - de 1 à 15§s d'un agent rétenteur d'eau; - de 1 à 15§ d'un agent anti -mousse; et éventuellement - de 1 à 15§b d'un dérivé siliconé, de préférence un siliconate. L'enduit selon l'invention présente une densité généralement comprise entre 0,9 et 1,3, de préférence entre 1 et 1,25, plus préférentiellement 1,15 à 1,21. L'enduit présent généralement un seuil d'écoulement, c'est- à-dire que sa viscosité diminue lorsqu'un cisaillement est appliqué et remonte lorsque le cisaillement disparaît. Ceci permet l'application par la technique Airless. La viscositéFIELD OF THE INVENTION The present invention relates to a grouting and surfacing compound for building elements, in particular plasterboard with paper facing, as well as to a method for producing a structure such as a partition, a wall cladding or a wall covering. ceiling. BACKGROUND TECHNOLOGY. It is well known to use gypsum board to make partitions, vertical or inclined elements of cladding or to achieve suspended ceilings or not. These plates are generally made of a substantially plaster core, covered on each of its faces by a sheet serving both as reinforcement and facing and which may be made of cardboard or mineral fibers. In general, gypsum boards are assembled with a first plaster and the joints between the plates are finished with a complementary plaster. A filler (or also called capping) is used in addition to the band, and generally has a relatively low shrinkage, good bonding and good adhesion of the joint strip. A finishing coating is used during the last pass to finish the work so that it has a monolithic surface. According to the application WO-A-9702395 the coating has the same color as the paper facing the plate. When laying a book on a building site, the various speakers are usually the plaquiste who lays the plates, the sealer who prepares the joints between plates (often the sealist and the plaquiste are the same, sometimes the sealist and the painter are the same) and the painter who decorates (generally after laying a so-called printing or primary layer, except in the case of the aforementioned WO-A-9702395). In general painters currently use paints that are applied using a projection nozzle, according to a system called "Airless", namely a container several tens of meters from the place of application and a single pipe with a gun equipped a nozzle at the end, all without air, which offers many advantages of storage between sites, etc. In general, the pressure used is between 120 and 200 bars. In many cases the painter, responsible for the final appearance, is obliged to return to the joints between the plates and treat them again. There is therefore a need for a coating that can be applied by the same person and / or the same airless material, and that is suitable for grouting, both for capping and finishing, and for surfacing. SUMMARY OF THE INVENTION . The invention therefore relates to a coating comprising, in percentages by weight relative to the total weight of the coating: - from 40 to 60% of a mineral filler having a diameter d50 of between 5 and 20 microns; from 5 to 10% of hydrophobic expanded perlite having a diameter d50 of between 20 and 100 microns; and - from 4 to 20% of a binder. Embodiments of the coating correspond to claims 2 to 18. The invention also relates to a process for preparing the coating according to the invention, according to claims 19 to 21. The invention also relates to a method of making a structure, comprising grouting with a plaster and / or surfacing by applying a plaster, and / or grouting and surfacing by applying a plaster, characterized in that the plaster is applied by the Airless technique or without air. According to one embodiment, the coating is as described in the present application. Another object of the present invention is therefore a method of producing a structure, comprising the juxtaposition of building elements, optionally the filling of the spacing between the building elements by means of a filler, laying of a strip, the covering of the strip by means of a finishing coating (with possibly the filling by means of a filler) and characterized in that it is used as finishing coating, the coating according to the invention. Another object of the invention is also a method for producing a structure, comprising the surfacing of construction elements by use of the coating according to the invention. Another object of the invention is a method for producing a structure, combining the two preceding objects according to the invention. Another object of the invention is a method of producing a structure, comprising the juxtaposition of gypsum boards having a paper facing, possibly the laying of a strip, the covering of the joint between the plates by means of a delayed-setting coating, characterized in that the coating is applied by the Airless technique or without air. Other features and advantages of the invention will now be described in detail in the following description. DETAILED DESCRIPTION OF THE INVENTION Coating according to the invention The coating according to the invention comprises, as indicated, the following elements (in% by weight relative to the total weight of the coating): from 40 to 60%, preferably from 40 to 50%, a mineral filler having a diameter d50 of between 5 and 20 microns, preferably between 10 and 15 microns; from 5 to 10%, preferably from 6 to 7.5%, of hydrophobic expanded perlite having a diameter d50 of between 20 and 100 microns, preferably between 30 and 70 microns; and 4 to 20%, preferably 5 to 10%, of a binder. The scale includes water and possibly other components. As mineral filler, any mineral filler usually employed for the manufacture of a grouting compound can be used. It is generally a light colored mineral filler, preferably white, and whose average diameter d 50 (weight) is generally between 5 and 20 microns, so that the coating gives after drying a smooth surface and can be pumped easily by an Airless machine. Examples of suitable d50 are 10 and 15 microns. As an example of inorganic filler, mention may be made of calcium carbonate, anhydrous calcium sulphate or dihydrate, magnesium carbonate, dolomite, silicas, silicates, aluminates or others. Preferably, calcium carbonate CaCO 3 is used . Hydrophobized expanded perlite has a d50 (weight) of between 20 and 100 microns. The apparent density of this perlite is preferably greater than 100 kg / m 3 . The d50 of the particles is generally between 20 and 100 microns, preferably 35 to 70. This perlite is known and may for example be of the Noblite ®, G50, G100, G200, G400 or Sil Cell. Without wishing to be bound by theory, the applicant believes that the small particle size and / or a relatively small surface area (compared to a size of 150 microns and more and / or a specific surface area of importance for "classical" perlite) avoids a crushing of the particles, which offers the possibility of passing in a so-called Airless process. The binder used is a binder that is conventional in the coating art and dispersible in the aqueous phase. It may be in the form of a dry extract or in the form, for example of latex, at 50% in water. By way of example of such binders, mention may be made of polyvinyl alcohol homopolymers, polyvinyl acetate homopolymers (plasticized or non-plasticized), ethylene / vinyl acetate copolymers (plasticized or non-plasticized EVA), vinyl ethylene / versatate, vinyl acetate / vinyl versatate, polyacrylic, copolymers vinyl acetate / acrylic, styrenic / acrylic copolymers, styrene / butadiene, vinyl acetate terpolymers / vinyl versatates / vinyl maleates, vinyl acetate / vinyl versatate / acrylic, vinyl acetate / vinyl ester of an acid terpolymer ( long-chain) / acrylic acid ester, acrylic terpolymers and mixtures thereof. It will be preferred to use two or more binders, one more specifically dedicated to protection against water and the other more particularly dedicated to plasticity. It will thus be possible to use combinations of binders: co- or terpolymer vinyl acetate / vinyl copolymer and vinyl copolymer / styrene copolymer / acrylic. When these polymers are provided, they are provided either in powder form or as a dispersion in water (generally at a rate of about 50%). The proportion of organic binder is preferably between 5 and 10% of the total weight of the coating. In addition to the elements indicated above, the coating generally comprises one or more of the following other components: a slip agent in an amount of, for example, 0.5 to 10%, preferably 1 to 5%; this sliding agent may be a silicate agent (different from the mineral filler), in particular an attapulgite-type clay, or it may be any known slip agent, for example talc, mica or a stearate, especially zinc; a workability agent which is a water-retentive and thickening agent, in an amount of, for example, from 1 to 15%; this water-retaining agent may be methylhydroxyethylcellulose; an antifoaming agent, in an amount of, for example, 1 to 15§b; this antifoam agent is for example a nonionic surfactant; a silicone derivative, in an amount for example from 1 to 15%; this silicone derivative serves, for example, as a pH buffer to obtain a basic medium and / or a viscosity regulator and / or to allow a better detaching, and it can be chosen from among the siliconates, silanes, hydrogenated silicone oils, silicone emulsions, amino-silicone emulsions, alkylsiloxane resins such as hydrogenomethylpolysiloxane and aminated polydimethylsiloxane, and mixtures thereof, preferably siliconates; - biocides; optical pigments and brighteners; dispersants; anti-freeze; - etc. A preferred coating according to the invention may comprise, in percentages by weight relative to the total mass of coating: - from 40 to 50% of calcium carbonate having a diameter d50 of between 5 and 20 microns, preferably between 10 and 15 microns ; from 5 to 10%, preferably from 6 to 7.5%, of hydrophobic expanded perlite; from 5 to 10% of a binder; from 1 to 5% of a slip agent comprising a clay and / or a stearate; from 1 to 15 seconds of a water-retaining agent; from 1 to 15% of an anti-foam agent; and optionally - from 1 to 15§b of a silicone derivative, preferably a siliconate. The coating according to the invention has a density generally of between 0.9 and 1.3, preferably between 1 and 1.25, more preferably between 1.15 and 1.21. The coating generally has a yield point, i.e. its viscosity decreases when shear is applied and rises when the shear disappears. This allows the application by the Airless technique. The viscosity
Brookfield de l'enduit, au niveau de la sortie de la buse de projection, est comprise par exemple entre 0,2 et 0,6 fois la valeur d'origine, de préférence entre 0,25 et 0,25. La viscosité est mesurée par un dispositif Helipath (Labomat)Brookfield of the coating, at the outlet of the spray nozzle, is for example between 0.2 and 0.6 times the original value, preferably between 0.25 and 0.25. The viscosity is measured by a Helipath device (Labomat)
(broche S96 à 10 tpm, 1 min) . Les valeurs après 24 heures de repos de l'enduit peuvent être comprises entre 150 000 cps et 1 500 000 cps, de préférence entre 250 000 cps et 1 200 000 cps, plus préférentiellement entre 300 000 cps et 950 000 cps. La durée de reconstitution du seuil d'écoulement, à savoir la durée entre l'application et le moment où l'enduit retrouve une viscosité proche de sa viscosité d'origine est compris généralement entre 1 et 120 min, de préférence entre 5 et 60 min. L'enduit selon l'invention présente un pH qui peut être contrôlé grâce au tampon, qui peut amener le pH à des valeurs basiques, par exemple 8 à 9,5. L'enduit selon l'invention présente un extrait sec qui peut varier, par exemple de 50 à 70%, de préférence 53 à 67%. En fonction de l'utilisation, on pourra préférer des valeurs plus ou moins élevées pour cet extrait sec. Pour une application en jointoiement, on préférera la moitié haute de l'intervalle tandis que pour une application en surfaçage on préférera la moitié basse de l'intervalle. L'enduit selon l'invention présente une ou plusieurs des propriétés suivantes : - avoir une bonne adhérence sur le papier constituant le parement de la plaque de plâtre; il y a en fait rupture cohésive dans le plâtre de la plaque; - avoir une bonne adhérence sur un parement du type fibres de verre pour permettre une application directe sans dépose du parement lors de chantiers de rénovation; - permettre un bon collage et une bonne adhérence de la bande à joint; - avoir une couleur identique à celle du papier de parement ; - présenter un retrait après séchage négligeable (par exemple moins de 20% tel que déterminé par le test de 1 ' anneau) ; - avoir une absorption de l'eau "proche" de celle du papier de parement, ceci afin d'éviter le recours a une couche de primaire avant l'application d'une tapisserie ou la mise en peinture, selon l'enseignement de la demande O-A-9702395 précitée; - permettre une adhérence modérée du papier constituant la tapisserie, de manière à rendre possible un ou plusieurs détapissage (s) ultérieur (s) ; - permettre une mise en peinture aisée (même lorsque l'enduit est utilisé comme seul enduit de jointoiement) ; - offrir un rendu de surface sensiblement identique à la couche de primaire d'impression habituellement utilisée dans le domaine des constructions de second œuvre; - permettre un texturage après application. Procédé de préparation de l'enduit selon l'invention L'enduit selon l'invention peut être préparé par mélange de ses constituants dans un ordre quelconque, ou dans un ordre choisi ou selon un procédé particulier donnant de bons résultats . Dans le premier cas les différents composants sont ajoutés dans l'eau sous agitation. Dans le second cas, on préférera ajouter la perlite expansée hydrophobée dans un premier temps, de préférence en présence d'un agent moussant, puis dans un second temps on ajoutera les autres composants. De l'eau peut être ajoutée à la fin pour régler la viscosité, les cas échéant. Dans le troisième cas, une partie de la charge (typiquement 5 à 10% en poids) est prémélangée avec d'autres composants qui peuvent présenter des difficultés de dispersion dans l'eau, par exemple l'agent glissant et/ou les pigments. A titre d'exemple on pourra utiliser un prémélange de la charge, de l'agent glissant, de l'agent de maniabilité et éventuellement d'un liant sous forme de poudre. La charge minérale est de préférence ajoutée avant le prémélange et le liant après. De l'eau peut être ajoutée à la fin pour régler la viscosité, les cas échéant . On utilise tout type de mélangeur, de préférence un mélangeur horizontal à alimentation étagée. Procédés de construction selon l'invention L'enduit selon l'invention peut être utilisé pour la réalisation, à l'aide de plaques de plâtre, de nombreux ouvrages tels que des cloisons, des habillages muraux ou des plafonds, suspendus ou non. L'enduit peut aussi être utilisé sur d'autres surfaces, par exemple en béton, notamment lorsque le tampon pour pH basique est présent . L'enduit selon l'invention convient en particulier à la réalisation d'ouvrage au moyen de plaques de plâtre à parement en papier. L'enduit selon l'invention est utilisé de préférence en Airless mais il peut aussi être utilisé comme enduit traditionnel . L'enduit selon l'invention peut être utilisé comme enduit de jointoiement uniquement ou comme enduit de surfaçage ou les deux. La réalisation d'un ouvrage au moyen de plaques de plâtre comprend généralement la juxtaposition de plaques de plâtre, le remplissage de l'espacement entre les plaques au moyen d'un enduit de remplissage, la pose d'une bande, le recouvrement de la bande au moyen de l'enduit de remplissage, puis le recouvrement de l'enduit de remplissage avec un enduit de finition. L'enduit selon l'invention peut être l'enduit de remplissage et/ou l'enduit de finition. Lorsque l'enduit selon l'invention est utilisé pour le traitement du joint, l'opérateur procède comme suit. Sur une bande appliquée dans les bords amincis l'enduit selon l'invention est appliqué par pulvérisation Airless au droit du joint (avec une buse appropriée) , puis quelques minutes après son application (lorsque la viscosité a remonté) l'opérateur procède alors au serrage du joint. Si l'opérateur n'a que le joint à faire, il procédera alors à une seconde application de l'enduit (ou un autre enduit selon l'invention plus particulièrement dédié à la finition) et à un lissage final. Si l'opérateur a toute la surface à enduire, alors il peut appliquer sur toute la surface un même enduit de surfaçage sans avoir à faire la finition du joint auparavant; dans ce cas les enduits de jointoiement et de surfaçage peuvent être identiques ou différents . Pour la réalisation des joints pour les bords amincis, on utilisera de préférence une bande de grille de verre auto- collante, sans couche préalable de remplissage. Pour la réalisation de joints sur plaques à bords ronds, donc sans bande, l'enduit s'utilise de la même façon. En fonction du niveau de finition désiré on peut procéder, pour le surfaçage ou impression, à une dépose d'un voile d'enduit à l'aide d'une buse à jet large. L'enduit selon l'invention permet de réaliser une opération le surfaçage et/ou l'impression. Après application, l'enduit peut être structuré à l'aide d'une spatule, d'une lisseuse, d'un rouleau à relief plastique ou tout autre instrument en fonction du relief désiré (relief spatule, roulé, roulé- écrasé, etc . ) . Dans le cas de rénovation de surface de type parement à base de fibres de verre, l'enduit selon l'invention offre une adhérence sur fibre de verre suffisante pour éviter tout ratissage ou dépose préalable du parement. Une des caractéristiques principales de l'enduit selon l'invention est d'être susceptible d'être projeté par un système dit Airless ou sans air, qui sont des matériels utilisés par les peintres notamment. Ces systèmes offrent des avantages de robustesse, simplicité d'utilisation (compresseur hors des pièces avec une seul tuyau dans la pièce, pas de séchage du produit car absence d'air, etc.). L'invention fournit donc un procédé de jointoiement et/ou surfaçage à l'aide d'un enduit à séchage à base de charge minérale et liant par pulvérisation selon la technique Airless ou sans air. Cette technique Airless fait emploi de pressions importantes, jusque 200 bar. Toutes les machines sont appropriées, notamment M-Tec® forte, Graco® Spackmax®, Elmyggan®, etc. L'enduit selon l'invention permet donc un gain de temps et de main d' œuvre considérable. L'invention trouve aussi à s'appliquer au domaine des enduits à prise retardé, le technique Airless étant applicable à ces enduits. De tels enduits à prise retardé sont des enduits à base de plâtre (du semi-hydrate) , mais qui comprennent un agent retardateur de prise. Parmi ces agents, on peut mentionner l'anhydride maléique, le polyacrylate de sodium et les acides polyacryliques, ainsi que les mélanges protéines disponibles sous le nom de Goldbond High Strength Retarder. La quantité est par exemple de 0.1 à 1% en poids par rapport au poids du semi-hydrate. On peut aussi utiliser un accélérateur qui est alors injecté dans le mélange au niveau de la buse de projection. Comme accélérateur, on peut utiliser sulfate d'aluminium, nitrate d'aluminium, nitrate ferrique, sulfate ferrique, chlorure ferrique, sulfate ferreux, sulfate de potassium, carbonate de sodium, bicarbonate de sodium, le sulfate d'aluminium étant généralement préféré. La quantité peut varier par exemple entre 1 et 5% en poids par rapport au poids du semi-hydrate. Les additifs cités plus haut peuvent aussi être utilisés dans le cas de l'enduit à prise; notamment on peut utiliser du polyvinylalcohol . Des exemples de telles compositions sont donnés par exemple dans WO-A-03027038 et O-A-03059838. EXEMPLES . Les exemples suivants sont donnés à titre uniquement illustratif et n'ont aucun caractère limitatif. On mesure la viscosité en sortie de malaxeur, et éventuellement après repos. Dans les exemples on utilise les composants suivants: (S96 spindle at 10 rpm, 1 min). Values after 24 hours of The coating may be between 150,000 cps and 1,500,000 cps, preferably between 250,000 cps and 1,200,000 cps, more preferably between 300,000 cps and 950,000 cps. The duration of reconstitution of the flow threshold, namely the time between the application and the time when the coating regains a viscosity close to its original viscosity is generally between 1 and 120 min, preferably between 5 and 60 min. The coating according to the invention has a pH which can be controlled by the buffer, which can bring the pH to basic values, for example 8 to 9.5. The coating according to the invention has a dry extract which may vary, for example from 50 to 70%, preferably from 53 to 67%. Depending on the use, higher or lower values may be preferred for this dry extract. For a grouting application, the upper half of the gap is preferred, while for a surfacing application the lower half of the gap is preferred. The coating according to the invention has one or more of the following properties: - have good adhesion to the paper constituting the facing of the plasterboard; there is in fact a cohesive rupture in the plaster of the plate; - Have a good adhesion on a siding of the glass fiber type to allow direct application without removing the siding during renovation projects; - allow good adhesion and good adhesion of the joint strip; - have a color identical to that of the facing paper; have a shrinkage after negligible drying (for example less than 20% as determined by the ring test); - have an absorption of water "close" to that of the facing paper, in order to avoid the use of a layer of primer before the application of a tapestry or painting, according to the teaching of the aforementioned application OA-9702395; - Allow a moderate adhesion of the paper forming the upholstery, so as to make possible one or more subsequent removal (s); - allow easy painting (even when the plaster is used as the only grouting compound); to provide a surface rendering substantially identical to the primer layer normally used in the field of second-structure constructions; - allow texturing after application. Process for preparing the coating according to the invention The coating according to the invention may be prepared by mixing its constituents in any order, or in a chosen order or according to a particular process giving good results. In the first case the different components are added to the water with stirring. In the second case, it is preferable to add the hydrophobized expanded perlite in a first step, preferably in the presence of a foaming agent, then in a second time the other components will be added. Water can be added at the end to adjust the viscosity, if any. In the third case, part of the filler (typically 5 to 10% by weight) is premixed with other components which may present dispersion difficulties in water, for example the slip agent and / or the pigments. By way of example, it is possible to use a premix of the filler, of the sliding agent, of the handling agent and possibly of a binder in the form of a powder. The mineral filler is preferably added before the premix and the binder after. Water can be added at the end to adjust the viscosity, if any. Any type of mixer is used, preferably a stepped horizontal mixer. Construction methods according to the invention The coating according to the invention can be used for the realization, using gypsum board, many works such as partitions, wall cladding or ceilings, suspended or not. The coating can also be used on other surfaces, for example concrete, especially when the basic pH buffer is present. The coating according to the invention is particularly suitable for the production of work by means of gypsum board with paper facing. The coating according to the invention is preferably used in Airless but it can also be used as a traditional coating. The coating according to the invention can be used as a grout only or as a surfacing coating or both. The realization of a structure by means of plasterboard generally comprises the juxtaposition of plasterboard, the filling of the spacing between the plates by means of a filler, the laying of a strip, the recovery of the strip by means of the filling plaster, then covering the filler with a finishing plaster. The coating according to the invention may be the filling compound and / or the finishing coating. When the coating according to the invention is used for the treatment of the joint, the operator proceeds as follows. On a strip applied in the thinned edges the coating according to the invention is applied by airless spray to the right of the seal (with a suitable nozzle), then a few minutes after its application (when the viscosity has risen) the operator then proceeds to tightening the seal. If the operator has only the joint to do, it will then proceed to a second application of the coating (or another coating according to the invention more particularly dedicated to finishing) and a final smoothing. If the operator has the entire surface to be coated, then he can apply the same surfacing all over the surface without having to finish the joint beforehand; in this case the coatings of grouting and surfacing may be the same or different. For the realization of the joints for the thinned edges, it will be preferable to use a self-adhesive glass grid strip, without prior filling layer. For the realization of joints with rounded plates, thus without strip, the coating is used in the same way. Depending on the desired level of finish, it is possible to apply a coating of a coating with the aid of a wide-jet nozzle for surfacing or printing. The coating according to the invention allows an operation surfacing and / or printing. After application, the coating can be structured using a spatula, a trowel, a roll with plastic relief or any other instrument depending on the desired relief (relief spatula, rolled, rolled-crushed, etc. .). In the case of surface renovation type glass fiber facing, the coating according to the invention provides sufficient fiberglass adhesion to prevent raking or prior removal of the facing. One of the main characteristics of the coating according to the invention is to be capable of being projected by a so-called airless or airless system, which are materials used by painters in particular. These systems offer advantages of robustness, simplicity of use (compressor out of the rooms with a single pipe in the room, no drying of the product because absence of air, etc.). The invention therefore provides a method of grouting and / or surfacing using a spray-based mineral filler based on airless or airless spray. This Airless technique uses high pressures, up to 200 bar. All machines are suitable, especially M-Tec strong ®, Graco ® Spackmax ®, ® Elmyggan etc. The coating according to the invention therefore saves considerable time and labor. The invention is also applicable to the field of delayed-setting coatings, the Airless technique being applicable to these coatings. Such delayed setting coatings are plaster-based coatings (of the hemihydrate), but include a set retarding agent. Among these agents, mention may be made of maleic anhydride, sodium polyacrylate and polyacrylic acids, as well as the protein mixtures available under the name Goldbond High Strength Retarder. The amount is for example from 0.1 to 1% by weight relative to the weight of the hemihydrate. It is also possible to use an accelerator which is then injected into the mixture at the level of the projection nozzle. As accelerator, it is possible to use aluminum sulphate, aluminum nitrate, ferric nitrate, ferric sulphate, ferric chloride, ferrous sulphate, potassium sulphate, sodium carbonate, sodium bicarbonate, aluminum sulphate being generally preferred. The amount may vary for example between 1 and 5% by weight relative to the weight of the hemihydrate. The additives mentioned above can also be used in the case of setting coating; in particular, polyvinylalcohol can be used. Examples of such compositions are given for example in WO-A-03027038 and OA-03059838. EXAMPLES The following examples are given for illustrative purposes only and are not limiting in nature. The viscosity is measured at the mixer outlet, and possibly after standing. In the examples, the following components are used:
Pour préparer les enduits, on procède de la façon suivante. On utilise un malaxeur horizontal. Dans l'eau de départ on ajoute la perlite sous agitation pendant 2 minutes. On ajoute ensuite le biocide et 1 ' anti-mousse, puis la charge minérale. On ajoute ensuite le prémélange, puis le ou les liant (s) et enfin on termine avec l'eau de réglage de viscosité, avec éventuellement le siliconate.To prepare the coatings, proceed as follows. A horizontal mixer is used. In the starting water the perlite is added with stirring for 2 minutes. The biocide and antifoam are then added, followed by the mineral filler. The premix is then added, then the binder (s) and finally the viscosity adjusting water is terminated, optionally with the siliconate.
Exemple 1. On prépare la composition 1 suivante: EXAMPLE 1 The following composition 1 is prepared:
On obtient les caractéristiques suivantesThe following characteristics are obtained
Exemple 2. On prépare la composition 2 suivante :Example 2 The following composition 2 is prepared:
On obtient les caractéristiques suivantesThe following characteristics are obtained
* valeur après repos: 911 000 cps Exemple 3. On prépare la composition 3 suivante * value after rest: 911,000 cps Example 3 The following composition 3 is prepared
On obtient les caractéristiques suivantesThe following characteristics are obtained
* valeur après repos: 826 000 cps Exemple 4. On prépare la composition 4 suivante: * value after rest: 826,000 cps Example 4. The following composition 4 is prepared:
On obtient les caractéristiques suivantesThe following characteristics are obtained
Exemple 5. On prépare la composition 5 suivante: Example 5 The following composition is prepared:
On obtient les caractéristiques suivantes :The following characteristics are obtained:
Exemple 6. On prépare la composition 6 suivante:Example 6 The following composition 6 is prepared:
On obtient les caractéristiques suivantes:The following characteristics are obtained:
Exemple 7. On prépare la composition 7 suivante Example 7 The following composition 7 is prepared
On obtient les caractéristiques suivantesThe following characteristics are obtained
Exemple 8. On prépare la composition 8 suivante:Example 8 The following composition 8 is prepared:
On obtient les caractéristiques suivantes The following characteristics are obtained
* valeur après repos: 250 000 cps Exemple 9. On prépare la composition 9 suivante: * value after rest: 250,000 cps Example 9 The following composition 9 is prepared:
On obtient les caractéristiques suivantes:The following characteristics are obtained:
* valeur après repos: 317 000 cps * value after rest: 317,000 cps
Exemple 10. On prépare la composition 10 suivante:Example 10 The following composition is prepared:
On obtient les caractéristiques suivantes:The following characteristics are obtained:
* valeur après repos: 195 000 cps Exemple 11. On prépare la composition 11 suivante: * value after rest: 195,000 cps Example 11 The following composition 11 is prepared:
On obtient les caractéristiques suivantes:The following characteristics are obtained:
Exemple 12. On a réalisé des joints par pulvérisation avec une machine Airless M-Tec avec 25m de tuyau en 19mm et 15m en 15mm, soit un total de 40m de longueur. La buse présente un angle de 60° et une ouverture de 51/1000 pouce. Après collage de la grille de verre au droit du joint, la pulvérisation de l'enduit 10 à une distance de 30cm puis dressage des joints traités quelques minutes après application conduit à des joints de bonne qualité. On procède maintenant à la pulvérisation sur des plaques avec joints déjà traités. Les mêmes outils sont utilisés, mais on pulvérise cette fois l'enduit 11 de sorte à former une bande de pulvérisation d'une largeur de 70cm. Sans lissage on obtient un enduit granité décoratif brut de pulvérisation. Le lissage de l'enduit pulvérisation ne pose aucun problème. Example 12 Spray joints were made with an Airless M-Tec machine with 25m of 19mm and 15m 15mm pipe, a total of 40m in length. The nozzle has a 60 ° angle and an opening of 51/1000 inches. After gluing the glass grid to the right of the joint, spraying the coating 10 at a distance of 30 cm and then dressing the treated joints a few minutes after application leads to good quality joints. Spraying is now carried out on already treated joints. The same tools are used, but this time the coating 11 is sprayed so as to form a spray band with a width of 70 cm. Without smoothing, a rough decorative granite spray coating is obtained. The smoothing of the spray coating is no problem.

Claims

REVENDICATIONS
1. Enduit de séchage comprenant, en pourcentages massiques rapportés à la masse totale d'enduit : - de 40 à 60% d'une charge minérale ayant un diamètre d50 compris entre 5 et 20 microns, de préférence entre 10 et 15 microns; - de 5 à 10% de perlite expansée hydrophobée ayant un diamètre d50 compris entre 20 et 100 microns; et - de 4 à 20% d'un liant.1. Drying coating comprising, in percentages by weight relative to the total mass of coating: - from 40 to 60% of a mineral filler having a diameter d50 of between 5 and 20 microns, preferably between 10 and 15 microns; from 5 to 10% of hydrophobic expanded perlite having a diameter d50 of between 20 and 100 microns; and - from 4 to 20% of a binder.
2. Enduit selon la revendication précédente, comprenant: - de 40 à 50% d'une charge minérale; - de 6 à 7,5% de perlite expansée hydrophobée; et - de 5 à 10% d'un liant.2. Coating according to the preceding claim, comprising: - from 40 to 50% of a mineral filler; from 6 to 7.5% of hydrophobic expanded perlite; and - from 5 to 10% of a binder.
3. Enduit selon la revendication 1 ou 2, dans lequel la perlite expansée hydrophobée présente un d50 compris entre 30 et 70.3. Coating according to claim 1 or 2, wherein the hydrophobed expanded perlite has a d50 between 30 and 70.
4. Enduit selon l'une des revendications précédentes, dans lequel le liant est choisi parmi les homopolymères d'alcool polyvinylique, les homopolymères acétates de polyvinyle (plastifiés ou non) , les copolymères éthylène/acétate de vinyle (EVA plastifiés ou non) , éthylène/versatate de vinyle, acétate de vinyle/versatate de vinyle, polyacryliques, copolymères acétate de vinyle/acryliques, copolymères styrèniques/acryliques, styrène/butadiène, les terpolymères acétate de vinyle/versatates de vinyle /maléates de vinyle, acétate de vinyle/versatate de vinyle/acryliques, les terpolymères acryliques et leurs mélanges .4. Coating according to one of the preceding claims, wherein the binder is chosen from homopolymers of polyvinyl alcohol, homopolymers polyvinyl acetates (plasticized or not), ethylene / vinyl acetate copolymers (EVA plasticized or not), vinyl ethylene / versatate, vinyl acetate / vinyl versatate, polyacrylic, vinyl acetate / acrylic copolymers, styrene / acrylic copolymers, styrene / butadiene, vinyl acetate terpolymers / vinyl versatates / vinyl maleates, vinyl acetate / vinyl / acrylic versatate, acrylic terpolymers and mixtures thereof.
5. Enduit selon l'une des revendications précédentes, comprenant en outre : - un agent glissant en une quantité de 0,5 à 10%, de préférence de 1 à 5%. 5. Coating according to one of the preceding claims, further comprising: - a slip agent in an amount of 0.5 to 10%, preferably 1 to 5%.
6. Enduit selon la revendication précédente, dans lequel l'agent glissant comprend une argile et/ou du talc et/ou di mica et/ou un stéarate.6. Coating according to the preceding claim, wherein the slip agent comprises a clay and / or talc and / or di mica and / or a stearate.
7. Enduit selon l'une des revendications précédentes, comprenant en outre : - un agent de maniabilité qui est un agent rétenteur d'eau et épaississant, en une quantité de 1 à 15&.7. Coating according to one of the preceding claims, further comprising: - a handling agent which is a water-retentive and thickening agent, in an amount of 1 to 15%.
8. Enduit selon la revendication précédente, dans lequel l'agent rétenteur d'eau est un dérivé de cellulose.8. Coating according to the preceding claim, wherein the water-retaining agent is a cellulose derivative.
9. Enduit selon l'une des revendications précédentes, comprenant en outre : - un agent anti-mousse, en une quantité de 1 à 15fe.9. Coating according to one of the preceding claims, further comprising: - an anti-foaming agent, in an amount of 1 to 15fe.
10. Enduit selon la revendication précédente, dans lequel l'agent anti-mousse est un tensio-actif non-ionique.10. Coating according to the preceding claim, wherein the anti-foaming agent is a nonionic surfactant.
11. Enduit selon l'une des revendications précédentes, comprenant en outre : - un dérivé siliconé, en une quantité de 1 à 15%>.11. Coating according to one of the preceding claims, further comprising: - a silicone derivative, in an amount of 1 to 15%>.
12. Enduit selon la revendication précédente, dans lequel le dérivé siliconé est un siliconate.12. Coating according to the preceding claim, wherein the silicone derivative is a siliconate.
13. Enduit selon l'une des revendications précédentes, comprenant : - de 40 à 50% de carbonate de calcium ayant un diamètre d50 compris entre 5 et 20 microns, de préférence entre 10 et 15 microns; - de 5 à 10%, de préférence de 6 à 7,5%, de perlite expansée hydrophobée ayant un diamètre d50 compris entre 30 et 70 microns; - de 5 à 10% d'un liant; - de 1 à 5% d'un agent glissant comprenant une argile et/ou un stéarate; - de 1 à 15&> d'un agent rétenteur d'eau; - de 1 à 151. d'un agent anti-mousse; et éventuellement - de 1 à 15%) d'un dérivé siliconé, de préférence un siliconate.13. Coating according to one of the preceding claims, comprising: - from 40 to 50% of calcium carbonate having a diameter d50 of between 5 and 20 microns, preferably between 10 and 15 microns; from 5 to 10%, preferably from 6 to 7.5%, of hydrophobic expanded perlite having a diameter d 50 of between 30 and 70 microns; from 5 to 10% of a binder; from 1 to 5% of a slip agent comprising a clay and / or a stearate; from 1 to 15% of a water-retaining agent; from 1 to 151. an anti-foam agent; and optionally - from 1 to 15%) of a silicone derivative, preferably a siliconate.
14. Enduit selon l'une des revendications précédentes, dans lequel la densité est comprise entre 0,9 et 1,3, de préférence entre 1 et 1,25, plus préférentiellement 1,15 à 1,21.14. Coating according to one of the preceding claims, wherein the density is between 0.9 and 1.3, preferably between 1 and 1.25, more preferably 1.15 to 1.21.
15. Enduit selon l'une des revendications précédentes, dans lequel la viscosité après 24 heures de repos de l'enduit peut être comprise entre 150000cps et 1500000cps, de préférence entre 250000cps et 1200000cps, plus préférentiellement entre 300000cps et 950000cps.15. Coating according to one of the preceding claims, wherein the viscosity after 24 hours of rest of the coating may be between 150000cps and 1500000cps, preferably between 250000cps and 1200000cps, more preferably between 300000cps and 950000cps.
16. Enduit selon l'une des revendications précédentes, dans lequel la viscosité sous cisaillement est égale à 0,2 à 0,6 fois la viscosité sans cisaillement, de préférence 0,25 à 0,35 fois.16. Coating according to one of the preceding claims, wherein the shear viscosity is 0.2 to 0.6 times the viscosity without shear, preferably 0.25 to 0.35 times.
17. Enduit selon l'une des revendications précédentes, dans lequel la durée de reconstitution du seuil d'écoulement présente une durée caractéristique entre 1 et 120 min, de préférence entre 5 et 60 min.17. Coating according to one of the preceding claims, wherein the duration of recovery of the flow threshold has a characteristic time between 1 and 120 min, preferably between 5 and 60 min.
18. Enduit selon l'une des revendications précédentes, présentant un extrait sec de 50 à 70%, de préférence 53 à 67%.18. Coating according to one of the preceding claims, having a solids content of 50 to 70%, preferably 53 to 67%.
19. Procédé de préparation d'un enduit selon l'une quelconque des revendications l à 18, dans lequel on mélange les constituants de l'enduit dans un ordre quelconque. 19. Process for preparing a coating according to any one of claims 1 to 18, wherein the constituents of the coating are mixed in any order.
20. Procédé de préparation d'un enduit selon l'une quelconque des revendications 1 à 18, dans lequel on mélange dans un premier temps la perlite puis les autres composants.20. A process for preparing a coating according to any one of claims 1 to 18, wherein the mixture is first mixed with pearlite and then the other components.
21. Procédé de préparation d'un enduit selon l'une quelconque des revendications 1 à 18, dans lequel on prémélange une partie de la charge minérale avec au moins une partie des composants difficilement dispersables .21. A process for preparing a coating according to any one of claims 1 to 18, wherein a portion of the inorganic filler is premixed with at least a portion of the hard-to-disperse components.
22. Procédé de réalisation d'un ouvrage, comprenant la juxtaposition de plaques de plâtre présentant un parement en papier, éventuellement la pose d'une bande, le recouvrement du joint entre les plaques au moyen d'un enduit de séchage à base d'une charge et de liant, caractérisé en ce que l'enduit est appliqué par la technique Airless ou sans air.22. A method of producing a structure, comprising the juxtaposition of plasterboard with a paper facing, possibly the laying of a strip, the covering of the joint between the plates by means of a drying coating based on a filler and binder, characterized in that the coating is applied by the Airless technique or without air.
23. Procédé selon la revendication 22, comprenant une étape supplémentaire de pulvérisation d'un enduit par la technique Airless ou sans air.23. The method of claim 22, comprising an additional step of spraying a coating by the airless or airless technique.
24. Procédé selon la revendication 22, comprenant une étape supplémentaire de surfaçage par application d'un second enduit de séchage à base d'une charge et de liant, caractérisé en ce que les premier et second enduits sont appliqués par la technique Airless ou sans air.24. The method of claim 22, comprising an additional step of surfacing by applying a second filler-based and binder-based drying coating, characterized in that the first and second coatings are applied by the Airless technique or without air.
25. Procédé selon l'une quelconque des revendications 22 à 24, dans lequel l'enduit est un enduit selon l'une des revendications 1 à 18.25. A method according to any one of claims 22 to 24, wherein the coating is a coating according to one of claims 1 to 18.
26. Procédé de réalisation d'un ouvrage, comprenant la juxtaposition de plaques de plâtre présentant un parement en papier, éventuellement la pose d'une bande, le recouvrement du joint entre les plaques au moyen d'un enduit à prise retardée, caractérisé en ce que l'enduit est appliqué par la technique Airless ou sans air. 26. A method of producing a structure, comprising the juxtaposition of plasterboard with a paper facing, possibly the laying of a strip, the covering of the joint between the plates by means of a delayed-setting coating, characterized in that what the coating is applied by the Airless technique or without air.
27. Procédé selon la revendication 26, comprenant une étape supplémentaire de pulvérisation d'un enduit par la technique Airless ou sans air.27. The method of claim 26, comprising an additional step of spraying a coating by the technique Airless or without air.
28. Procédé selon la revendication 26, comprenant une étape supplémentaire de surfaçage par application d'un second enduit à prise retardée, caractérisé en ce que les premier et second enduits sont appliqués par la technique Airless ou sans air.28. The method of claim 26, comprising an additional step of surfacing by application of a second delayed-setting coating, characterized in that the first and second coatings are applied by the airless technique or without air.
29. Procédé selon l'une des revendications 26 à 28, comprenant l'étape d'injection d'un agent accélérateur dans l'enduit immédiatement avant l'application par la technique Airless ou sans air. 29. Method according to one of claims 26 to 28, comprising the step of injecting an accelerating agent in the coating immediately before application by the airless or airless technique.
EP05769258A 2004-05-04 2005-05-04 Method for producing a work, pointing and surfacing compound for structural elements and method for producing thereof Withdrawn EP1744996A1 (en)

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EP04291141A EP1593659B1 (en) 2004-05-04 2004-05-04 Process for making a structure, pointing and surfacing compound for structural elements and process for preparing the same
EP05769258A EP1744996A1 (en) 2004-05-04 2005-05-04 Method for producing a work, pointing and surfacing compound for structural elements and method for producing thereof
PCT/FR2005/001127 WO2005121040A1 (en) 2004-05-04 2005-05-04 Method for producing a work, pointing and surfacing compound for structural elements and method for producing thereof

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US20070232736A1 (en) 2007-10-04
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US7759416B2 (en) 2010-07-20
DE602004010235T2 (en) 2008-10-02
AU2005251974A1 (en) 2005-12-22
WO2005121040A1 (en) 2005-12-22
EP1593659A1 (en) 2005-11-09
PT1593659E (en) 2008-02-14
MXPA06012718A (en) 2007-02-14
EP1593659B1 (en) 2007-11-21
CA2565674A1 (en) 2005-12-22
PL1593659T3 (en) 2008-03-31
CN1950310A (en) 2007-04-18
CA2565674C (en) 2013-07-16
AU2005251974B2 (en) 2010-07-22

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