EP0374023A1 - Vorrichtung zum Auftragen eines in einem Gas verteilten pulverförmigen Feststoffes auf ein sich bewegendes Substrat - Google Patents

Vorrichtung zum Auftragen eines in einem Gas verteilten pulverförmigen Feststoffes auf ein sich bewegendes Substrat Download PDF

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Publication number
EP0374023A1
EP0374023A1 EP89403414A EP89403414A EP0374023A1 EP 0374023 A1 EP0374023 A1 EP 0374023A1 EP 89403414 A EP89403414 A EP 89403414A EP 89403414 A EP89403414 A EP 89403414A EP 0374023 A1 EP0374023 A1 EP 0374023A1
Authority
EP
European Patent Office
Prior art keywords
cavity
substrate
gas
injectors
slot
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.)
Granted
Application number
EP89403414A
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English (en)
French (fr)
Other versions
EP0374023B1 (de
Inventor
Vincent Sauvinet
Michel Valere
Jean Fosset
Daniel Defort
Maurice Boutrouille
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.)
Saint Gobain Glass France SAS
Saint Gobain Vitrage SA
Original Assignee
Saint Gobain Vitrage SA
Saint Gobain Vitrage International 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 Saint Gobain Vitrage SA, Saint Gobain Vitrage International SA filed Critical Saint Gobain Vitrage SA
Priority to AT8989403414T priority Critical patent/ATE105511T1/de
Publication of EP0374023A1 publication Critical patent/EP0374023A1/de
Application granted granted Critical
Publication of EP0374023B1 publication Critical patent/EP0374023B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
    • 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
    • B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state

Definitions

  • the present invention relates to the homogeneous distribution of a pulverulent product through a slit, on a substrate, in particular glass, with a view to coating it with a film with particular properties, in particular optical and / or electrical properties.
  • This homogenization chamber also receives pressurized gas so that turbulence is formed which is intended to homogenize the mixture of powder and gas.
  • a divergent then a convergent lead to the distribution slot.
  • This nozzle gives interesting results, but it is nevertheless quite sensitive to fouling and periodically requires cleaning to continue to function properly, which results in a loss of production.
  • it is provided for a distribution slot length of 250 to 650 mm, and to coat glass ribbons of several meters in width, it is necessary to have end to end several identical nozzles.
  • An absolute identity or balancing problem of the different nozzles thus associated then arises to ensure regular distribution over the entire width of the glass.
  • a nozzle of this type but of greater length, for example of a length at least equal to that of the glass ribbon "float" which generally reaches more than 3 m; but it can be seen that the deposition is still not regular and that it follows, when working in interference thicknesses, unacceptable color variations of the deposited layer.
  • European patent application A-125 153 has proposed a method and a device for distributing a pulverulent solid on a substrate, the length of which corresponds to the width of the substrate, ensuring regular distribution of the product. powder in time and space.
  • the process which is the subject of this European patent application consists in forming a vein of powder suspended in a gas, in the form of a blade, close to and substantially below the substrate, over a length at least equal to the width of the substrate. to treat, to keep this vein in continuous flow towards the substrate over its entire length, to introduce gas streams in this vein to create turbulence and homogenize the mixture of gas and powder as it moves towards the substrate and regularly accelerates the movement of the powder in suspension towards the substrate by entraining it by additional gas streams introduced on its sides towards the substrate. According to this invention, homogenization and acceleration can take place in a single step.
  • the European patent application describes in particular a nozzle as a device for distributing the pulverulent solid, the length of which can correspond to the width of the substrate to be treated and which comprises a longitudinal cavity whose walls converge regularly towards the substrate to be treated, the homogenization and acceleration zones are thus combined.
  • the nozzle in its upper part, comprises a plate forming a cover for the cavity.
  • the plate is pierced with an opening which allows the powder supply suspended in a gas, called primary gas, by separate supply conduits for example.
  • the powder supply conduits are arranged in this opening over the entire length of the nozzle and spaced from each other by about 50 mm for example, so as to introduce powder over the entire length of the cavity.
  • These supply conduits are not tightly fixed in this opening, which allows the entry of gas or generally air from the ambient atmosphere inside the nozzle cavity.
  • the longitudinal walls of the cavity and the cover plate define, in the upper part of the nozzle, two slots, which extend over the entire length of the nozzle, through which additional gases are introduced under pressure, called secondary gases.
  • the secondary gas is injected at a rate much higher than that of the primary gas in which the pulverulent product is in suspension. This high speed makes it possible to accelerate the movement of movement of the pulverulent product towards the outlet slot of the nozzle and promotes the uniform distribution of the flow of gas injected over the entire length of the nozzle.
  • the secondary gas also entrains gas or air from the ambient atmosphere (gas or induced air) thus allowing the formation of turbulence which promotes the homogenization of the pulverulent product-gas mixture.
  • This device has certain advantages; in particular, the secondary gas injected and the air induced at the very level of the end of the powder supply conduits makes it possible to eliminate any risk of unwanted deposition of powder on the walls of the nozzle cavity and of powder discharge by the opening of the nozzle.
  • the device according to the invention for the distribution of pulverulent solid, suspended in a gas, on a moving substrate comprises (a) two walls (4) which delimit a cavity (5) in the form of a blade arranged transversely to the direction of movement of the substrate, these walls forming, at their lower part a distribution slot (6), and, at their upper part, an orifice (7), (b) injectors (8) of powdery solid suspended in a gas, forming a line of injectors arranged in the orifice 7 and placed substantially along the plane of the blade, (c) a gas inlet in the cavity adjacent to the injectors and (d) at least one gas injection means under pressure in the cavity.
  • the injection means (9) comprises a chamber (10), supplied with gas under pressure, which opens into the cavity (5) by an opening (12) arranged so as to inject the gas into said cavity, substantially parallel to the wall thereof which is adjacent to them, in the direction of the substrate.
  • the opening (12) is constituted by a plurality of nozzles with axes substantially parallel to the wall of the cavity which is adjacent to them, these nozzles being distributed transversely to the substrate.
  • nozzles are formed in a plate (11) which closes the chamber and extends transversely to the substrate.
  • this plate is formed of several elements adjacent to each other.
  • the means for injecting pressurized gas (9) is advantageously disposed on one side of the line of injectors.
  • the device (1) according to the invention is adapted to deposit, on a moving substrate, preferably over the entire width of the substrate, a powdery solid, called hereinafter powder, suspended in a gas.
  • the device has a length which depends on the width of the substrate to be coated. It can, for example, have a length of about fifty centimeters to several meters.
  • the device can be used to coat various substrates such as glass, metal, wood, paper, which pass under the nozzle at constant speed.
  • substrates such as glass, metal, wood, paper
  • the substrate may have, as running speed, that required by its manufacture; it can be for example between 6 and 25 m / min.
  • the nozzle 1 is formed of a body (3) comprising two internal walls (4) which delimit a narrow cavity (5), in the form of a blade arranged transversely in the direction of movement of the substrate (2). These walls are flat and for example make an angle of 0 to 3 ° between them.
  • the walls delimit a blade-shaped cavity which is regularly convergent towards the surface of the substrate.
  • the walls (4) form, in the lower part of the nozzle, a slot (6) for distributing the powder on the substrate (2).
  • the distribution slot has advantageously a width of approximately 3 to 4 times less than the distance existing between the walls in their upper part, that is to say at the inlet of the nozzle.
  • the distance between the walls (4) at the inlet of the nozzle may be between approximately 6 mm and 40 mm; at the distribution slot, it is at most 10 mm and preferably between 3 mm and 5 mm.
  • the nozzle comprises, in its upper part, an orifice (7) located in the extension of the cavity (5).
  • Vertical plates not shown, laterally limit the air space and the orifice (7).
  • the nozzle (1) is associated with at least one injector (8) of powder suspended in a so-called primary gas, such as air or nitrogen.
  • a so-called primary gas such as air or nitrogen.
  • injectors are used which form a line of injectors arranged in the orifice (7), over the entire length of the nozzle, so as to inject a plurality of jets of powder suspended in the gas in the cavity ( 5) delimited by the internal walls (4).
  • the position of the injectors (8) is adjustable vertically, transversely and laterally in the orifice (7).
  • the injectors can be oriented perpendicular to the axis of the distribution slot (6); these injectors can also be inclined in a direction not perpendicular to the axis of the slot (6).
  • the end of the injectors corresponding to the outlet of the powder can be at different levels depending on the desired conditions of injection of the powder suspension into the cavity, conditions on which the characteristics of the layer obtained on the substrate depend.
  • this end is located at an opening (12) for injecting pressurized gas into the cavity, an opening which is described below.
  • the injectors have a smaller section than that of the orifice (7) in order to allow gas, preferably ambient air, to enter the cavity (5) adjacent to the injectors.
  • the number of injectors is variable. It depends on the length of the nozzle and is determined so that the trace formed by the powdery solid on the substrate, at the outlet of the distribution slot, is continuous and uniform.
  • the nozzle (1) further comprises at least one means (9) for injecting pressurized gas, called secondary gas, generally air or nitrogen.
  • This injection means comprises a chamber for injecting pressurized gas, or several chambers interconnected by a means allowing the gas to pass and located in the body of the nozzle, at least one, called the upper chamber, located in the upper part of the nozzle and opening into the cavity (5) through the opening (12).
  • an injection means is shown in cross section in Figures 1 and 2 with the reference (9). It is located in the upper part of the nozzle and consists of a chamber (10) supplied with gas under pressure and connected, for example by a ramp with holes (13) to a gas source. This chamber (10) opens into the cavity (5) through the opening (12). This opening is, in particular, placed near the injectors (8), tangentially to one of the walls (4) which delimit the cavity (5).
  • the opening (12) is constituted by a plurality of nozzles drilled in a plate, like the plate (11), which extends transversely to the substrate (2).
  • the nozzles have axes which are substantially parallel to the wall of the cavity (5) which is adjacent to them. These nozzles are distributed transversely to the substrate, preferably in a regular manner.
  • the nozzles have a diameter between 0.5 mm and 3 mm and preferably between 0.8 mm and 1.3 nmm.
  • the difference between the nozzles is between 1 mm and 15 mm and preferably between 5 mm and 10 mm.
  • the lower end of the nozzles is preferably located at the lower end of the injectors (8).
  • the plate (11) may include an end flange (15) defining a guide wall, in continuity with that of the chamber (10) for guide the flow of secondary gas under pressure to the inlet of the opening.
  • the plate (11) is advantageously made of metal, not sensitive to corrosion, such as stainless steel.
  • the powder distribution device comprises two means for injecting secondary gas, as described above, arranged symmetrically with respect to the line of injectors (5).
  • the body (3) of the nozzle (1) can be hollow and then comprises various reinforcements or spacers (16) to ensure its non-deformability. It further comprises, and more particularly in the lower part close to the substrate to be coated, cooling members (17), for example water circuits, to avoid excessive heating of the nozzle nose due to the proximity of the substrate. (2), generally brought to a high temperature.
  • the nozzle may have a position perpendicular to the plane of the substrate. It can also be inclined in a direction not perpendicular to the substrate. It can be placed perpendicular or not to the direction of travel of the ribbon.
  • the distribution slot (6) can be at a distance of approximately 15 to 120 mm, and preferably 30 to 90 mm, from the surface of the substrate.
  • a coating in a thin layer for example less than 0.4 ⁇ m thick, on a glass ribbon for example, which has particular optical qualities
  • various powders based on different metals tin, indium, titanium, chromium, iron, cobalt, etc.
  • DBTO dibutyltin oxide
  • DBTF dibutyltin difluoride
  • metallic acetylacetonates metallic acetylacetonates and indium formate or mixtures of these powders.
  • the impact speeds of the powder on the glass are generally at least equal to 10 m / s and advantageously between 25 and 60 m / s.
  • the device according to the invention allows the uniform deposition of powder in suspension in a gas to form thin layers having in particular desired optical and / or electrical properties.
  • the powder in suspension in a so-called primary gas for example air or nitrogen
  • a so-called primary gas for example air or nitrogen
  • a so-called secondary gas under pressure from the chamber (10) is introduced into the cavity (5) of the nozzle via the opening (12) constituted for example by nozzles drilled in the plate (11).
  • the secondary gas under pressure accelerates the movement of movement of the powder towards the substrate. It also drives ambient air arriving through the space between the injectors.
  • the secondary gas under pressure and the induced ambient air create turbulence in the powder suspension which homogenize the powder-gas mixture.
  • the secondary gas under pressure is injected at a speed much higher than that of the powder at the outlet of the injectors (8) to significantly accelerate the powder-gas suspension and promote the uniform distribution of the flow rate of injected and induced gas over the entire length of the nozzle.
  • the speed of the gas, at the time of its injection into the cavity is higher.
  • the volume of ambient air induced by the secondary gas under pressure is greater. It has been noted, for example, that the volume of induced ambient air could correspond to the volume of the secondary gas emerging from the opening, which allows better homogenization of the gas-powder mixture.
  • the width of the trace of the powder deposited on the substrate, corresponding to an injector is greater. than when using the prior devices. This allows fewer powder injectors to be used. Thus, for example, with the prior devices, a large number of powder injectors were used spaced about 50 mm apart and the width of the powder trace on the substrate was about 50 mm.
  • the opening (12) as described above which is constituted by a plurality of nozzles drilled in a plate has, moreover, an advantage compared to the devices described above.
  • devices such as that described in European patent 125 153, cited above, include two continuous slots for delivering the gas under pressure into the central cavity. These slots have a width of the order of a few tenths of a millimeter and this width is adjusted by sliding the cover plate for the cavity in a direction perpendicular to the longitudinal walls of the cavity.
  • Adjusting slots of this dimension to obtain a constant width over their entire length, is also particularly difficult. Indeed, the differences in width which could exist all along the slits would cause undesirable effects, in particular a non-uniform distribution of the flow of secondary gas and a non-homogeneity of the mixture of pulverulent product-gas which would result, on the substrate, by iridescence due to variations in thickness of the deposited layer.
  • the pressurized gas is injected into the cavity by nozzles which can be pierced definitively in a plate fixed to the device.
  • the particularly difficult adjustment of the width of the slot is unnecessary.
  • the hole plate can be made by simple drilling.
  • the invention has been described in particular with reference to a device comprising a secondary gas injection means located on one side of the injector line and comprising a chamber supplied with pressurized gas opening into the cavity (5) by an opening (12) constituted by a plurality of nozzles drilled in a plate (11) fixed to the body (3) of the nozzle (1).
  • the secondary gas injection means advantageously located on one side of the injector line, comprises a chamber, supplied with gas under pressure, which opens into the cavity (5 ) by an opening (12) constituted by at least one slot disposed over the entire length of the nozzle (2) so as to inject the gas into the cavity (5), substantially parallel to the wall which is adjacent to it. Its width can advantageously be between 0.2 mm and 2 mm.
  • the slot can be made in a plate, similar to the plate (11), which is fixed to the nozzle, as shown in Figures 1, 2 and 3.
  • the secondary gas injection means advantageously located, according to the invention, on one side of the line of injectors (8), is of the type described in European patent 125,153.
  • This secondary gas injection means is formed for example of a series of chambers (20), located in the body of the nozzle, and connected, by a ramp (21), to a source of gas, air in general.
  • These chambers (20) are interconnected by a partition forming a spacer (22) provided with a passage means for the gas, constituted by a porous material of the "Poral" type (23) or by an orifice (24).
  • the chamber (25) located in the upper part of the nozzle opens into the cavity (5) through a slot (26) arranged transversely to the substrate (2), so as to inject the gas into the cavity (5) substantially parallel to the wall (4 ′) of the cavity (5) which is adjacent to it.
  • This slot (26) is limited by two lips (27) and (28); the lip (27), called lower, consists of the approximately rounded upper edge of the side wall (4 ′) of the cavity (5) and the lip (28), called upper, is formed by the end of a plate (29) forming a cover for the chamber upper (25) secondary gas injection.
  • the inner surface of the upper lip (28) has a configuration complementary to that of the lower lip (27) so as to orient the secondary gas parallel to the wall (4 ′) of the cavity (5).
  • the end of the upper lip (28) is advantageously located in the cavity (5), at a distance of 10 mm to 20 mm from the upper edge of the wall (4 ′) constituting the lower lip (27).
  • the slot limited by the wall (4 ′) of the cavity (5) and the end of the lip (28) has a width of between 0.2 mm and 2 mm, advantageously it is 0.3 mm.
  • the end of the upper lip (28) has been shown with a dimension not related to that of the nozzle for the sole purpose of understanding.
  • tie rods not shown in FIG. 4, in the thickness of the body of the nozzle, which act on the wall (4 ′) of the cavity to precisely adjust the width of the crack and avoid deformation during operation.
  • a 4 mm thick "floated" glass sheet is processed, traveling at a speed of 12.50 m / min.
  • the powder used consists of dibutyltin difluoride with a particle size of less than 20 ⁇ m. Its flow rate is 5.6 kg per hour and per linear meter of nozzle length.
  • the nozzle as shown in Figure 1, has a distribution slot (6) 4 mm wide.
  • the distance between the slot (6 (and the glass surface is 90 mm.
  • the opening (12) consists of the nozzles whose diameter is 0.8 mm and the inter-nozzle distance is 1.5 mm.
  • the primary gas in which the powder is suspended is air.
  • the secondary gas under pressure (0.6 bars) is air, the flow rate of which is 160 Nm3 per hour and per linear meter of nozzle length.
  • the induced ambient air flow rate is 160 Nm3 per hour and per linear meter of nozzle length.
  • the trace formed by the powder on the substrate at the outlet of the nozzle and corresponding to each injector is approximately 150 mm.
  • a fluorine-doped tin oxide layer is obtained with a thickness between 1635 and 1650 A °, or with thickness differences of 15 A °.
  • a nozzle was used comprising an opening (12), constituted by nozzles as defined above, located on one side of the injector line.
  • a layer of suitable properties can also be obtained by using a nozzle which comprises, on one side of the injector line, any opening which makes it possible to inject the secondary gas into the cavity (5) parallel to the wall of that here, in accordance with the invention.

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  • Nozzles (AREA)
  • Liquid Crystal (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Recrystallisation Techniques (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Surface Treatment Of Glass (AREA)
  • Coating Apparatus (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Tunnel Furnaces (AREA)
EP89403414A 1988-12-14 1989-12-11 Vorrichtung zum Auftragen eines in einem Gas verteilten pulverförmigen Feststoffes auf ein sich bewegendes Substrat Expired - Lifetime EP0374023B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8989403414T ATE105511T1 (de) 1988-12-14 1989-12-11 Vorrichtung zum auftragen eines in einem gas verteilten pulverfoermigen feststoffes auf ein sich bewegendes substrat.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816436A FR2640164B1 (fr) 1988-12-14 1988-12-14 Dispositif de distribution d'un solide pulverulent en suspension dans un gaz sur un substrat en defilement
FR8816436 1988-12-14

Publications (2)

Publication Number Publication Date
EP0374023A1 true EP0374023A1 (de) 1990-06-20
EP0374023B1 EP0374023B1 (de) 1994-05-11

Family

ID=9372917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403414A Expired - Lifetime EP0374023B1 (de) 1988-12-14 1989-12-11 Vorrichtung zum Auftragen eines in einem Gas verteilten pulverförmigen Feststoffes auf ein sich bewegendes Substrat

Country Status (10)

Country Link
US (1) US5005769A (de)
EP (1) EP0374023B1 (de)
JP (1) JPH03137962A (de)
AT (1) ATE105511T1 (de)
AU (1) AU630692B2 (de)
CA (1) CA2005443C (de)
DE (1) DE68915256T2 (de)
ES (1) ES2055137T3 (de)
FR (1) FR2640164B1 (de)
PT (1) PT94063B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612566A1 (de) * 1993-02-25 1994-08-31 Saint-Gobain Vitrage International Vorrichtung zur Verteilung von pulverförmigen Feststoffen auf ein Substrat zum Zweck seiner Beschichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5477025A (en) * 1994-01-14 1995-12-19 Quantum Laser Corporation Laser nozzle
FR2724853B1 (fr) 1994-09-27 1996-12-20 Saint Gobain Vitrage Dispositif de distribution de solides pulverulents a la surface d'un substrat en vue d'y deposer un revetement
GB9610821D0 (en) * 1996-05-23 1996-07-31 Glaxo Wellcome Inc Metering apparatus
US8834964B2 (en) * 2009-12-11 2014-09-16 Ngimat, Co. Process for forming high surface area embedded coating with high abrasion resistance

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288068A1 (fr) * 1974-10-15 1976-05-14 Boussois Sa Procede et dispositif pour deposer par pulverisation d'un liquide une couche mince a la surface d'un materiau en feuille, notamment pour le traitement a chaud d'une feuille de verre
EP0125153A2 (de) * 1983-03-14 1984-11-14 Saint Gobain Vitrage International Verfahren und Vorrichtung zum regelmässigen Auftragen von Puder auf ein Substrat und Substrat auf diese Weise beschichtet

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US745518A (en) * 1902-03-13 1903-12-01 Oil Blast Furnace Smelting Company Burner.
US1462680A (en) * 1922-09-01 1923-07-24 Bliss John Burner for fluid fuel
FR2427141B1 (de) * 1978-05-31 1980-10-10 Saint Gobain
US4344986A (en) * 1980-08-08 1982-08-17 Ppg Industries, Inc. Method of delivering powder coating reactants
US4325988A (en) * 1980-08-08 1982-04-20 Ppg Industries, Inc. Deposition of coatings from fine powder reactants
US4401695A (en) * 1982-06-01 1983-08-30 Ppg Industries, Inc. Method of and apparatus for applying powder coating reactants
FR2542636B1 (fr) * 1983-03-14 1985-07-12 Saint Gobain Vitrage Procede et dispositif de distribution reguliere d'un solide pulverulent sur un substrat en vue de son revetement et substrat ainsi revetu
FR2542637B1 (fr) * 1983-03-14 1985-07-12 Saint Gobain Vitrage Distribution reguliere d'un solide pulverulent sur un support en vue de son revetement
US4903895A (en) * 1989-03-13 1990-02-27 John T. Mathewson Snow making nozzle assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288068A1 (fr) * 1974-10-15 1976-05-14 Boussois Sa Procede et dispositif pour deposer par pulverisation d'un liquide une couche mince a la surface d'un materiau en feuille, notamment pour le traitement a chaud d'une feuille de verre
EP0125153A2 (de) * 1983-03-14 1984-11-14 Saint Gobain Vitrage International Verfahren und Vorrichtung zum regelmässigen Auftragen von Puder auf ein Substrat und Substrat auf diese Weise beschichtet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612566A1 (de) * 1993-02-25 1994-08-31 Saint-Gobain Vitrage International Vorrichtung zur Verteilung von pulverförmigen Feststoffen auf ein Substrat zum Zweck seiner Beschichtung

Also Published As

Publication number Publication date
PT94063B (pt) 1996-04-30
ES2055137T3 (es) 1994-08-16
JPH03137962A (ja) 1991-06-12
US5005769A (en) 1991-04-09
AU630692B2 (en) 1992-11-05
CA2005443A1 (fr) 1990-06-14
DE68915256D1 (de) 1994-06-16
AU5451390A (en) 1992-01-09
EP0374023B1 (de) 1994-05-11
PT94063A (pt) 1991-11-29
ATE105511T1 (de) 1994-05-15
FR2640164B1 (fr) 1991-02-01
FR2640164A1 (fr) 1990-06-15
DE68915256T2 (de) 1994-09-01
CA2005443C (fr) 2000-01-18

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