US3750955A - Spray coating apparatus - Google Patents

Spray coating apparatus Download PDF

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Publication number
US3750955A
US3750955A US00265565A US3750955DA US3750955A US 3750955 A US3750955 A US 3750955A US 00265565 A US00265565 A US 00265565A US 3750955D A US3750955D A US 3750955DA US 3750955 A US3750955 A US 3750955A
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US
United States
Prior art keywords
air
lip
header
liquid
secured
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.)
Expired - Lifetime
Application number
US00265565A
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English (en)
Inventor
S Nakai
T Sameshima
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.)
Honshu Paper Co Ltd
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Honshu Paper Co Ltd
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Publication date
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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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0869—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the liquid or other fluent material being sucked or aspirated from an outlet orifice by another fluid, e.g. a gas, coming from another outlet orifice

Definitions

  • Coating apparatus which has a spray tip [52] U.S. Cl. 239/420, 239/597 characteristic tailored to produce an atomized spray [51] Int. Cl. F23d 11/16, F23d 13/40, F23d 15/00 patter which is substantially triangular in cross section. [58] Field of Search 239/413, 420, 421, This results in a coat distribution uniform particularly 239/426, 597 X, 41 1 throughout a given width of a substrate. Means are also provided to hold the spray tip wide open for mainte- [56] References Cited nance purposes.
  • This invention relates to apparatus for applying solutions or dispersions of various coating materials onto the surface of a substrate, more particularly to spray coating apparatus for depositing a uniform film of coat on sheet structures.
  • coating liquid which collectively includes water solutions or dispersions such as of aqueous adhesives, hot melt adhesives, water-soluble paints, organic and inorganic solvents, water-repellent agents, surfactants and the like.
  • Spray guns of various types are known for use in coat or paint application.
  • a typical example is an air spray gun designed to mix a coating liquid with a strong blast of air either within the tip of the spray nozzle or at a point immediately outside of the spray tip, thereby atomizing the liquid for deposition on a desired surface.
  • these spray guns are extensively used in paint application for their case of handling, they have certain limitations and difficulties in their performance.
  • the quantities of coating liquid the spray gun can handle are extremely limited, and to increase its spray ca pacity will literally require increased number of spray nozzles.
  • the patterns of coat produced by the spray gun having a cross-sectionally round tip are necessarily circular with adjacent dots of coat overlapped so that it is difficult to obtain a coat of uniform thickness throughout the entire surface of a substrate.
  • Thirdly, owing to limited spray capacity and circular spray tip characteristic of the spray gun it is difficult to provide a coat distribution on a relatively wide sheet substrate with any degree of uniformity widthwise of the substrate.
  • FIG. 1 is a sectional view of an important part of the apparatus of the invention
  • FIG. 2 is a front elevation of the apparatus of FIG. 1;
  • FIG. 3 is a schematic illustration utilized to explain a spray pattern of coat produced by the apparatus of the invention. Like numerals refer to like parts throughout the di'awings.
  • a spray coating apparatus which essentially comprises a cylindrical air header receiving a supply of compressed air and having a plurality of downwardly di rected openings, at first and a second lip member extending substantially to full length of said cylindrical air header and secured at one ends thereof to said header, said first and second lip members defining therebetween an air chamber communicating with said openings of the header and converging at the other or free ends, thus forming thereatan air jet slit for discharging compressed air, a block member disposed in opposed relation to the outer wall of said first lip member and defining therewith a liquid chamber, a blade secured at one end to said block member and having the other end in abutting relation to the free end of said first lip member for forming therebetween a spray tip, and a plurality of liquid supply tubes secured to said block member and supplying a coating liquid to said liquid chamber.
  • FIG. 1 there is shown a coating machine embodying the invention for applying an atomized coat over the surface of a relatively wide sheet substrate.
  • This machine comprises a cylindrical air header 101 horizontally mounted on a suitable frame (not shown) for receiving a supply of air compressed for example to a water column of between 2,000 mm and 3,000 mm.
  • the header 101 is provided at a lowerpart with a series of openings 102 aligned in the axial direction of the header and each having a diameter of about 50 mm and spaced about 65 mm apart from each other.
  • the openings 102 are directed downwardly towards and comm u?
  • a pair of lip members 103 and 104 extending substantially to full length of the cylinder air header 101 and defining therebetween an air chamber 105 which is substantially triangular in cross section and converges into an air jet slit 106 about 0.25 to 0.35 mm wide.
  • the first or upper lip member 103 extends vertical with respect to the axis of the header 101 and has its upper end portion secured by bolts 107 through a washer 108 to the peripheral wall of the header 101.
  • the lower inner wall 109 of the upper lip 103 is reduced gradually towards the slit 106.
  • the lower lip member 104 is disposed at aprede'termined angle with respect to the upper vertical lip member 103 and secured in place by a lip holder 110.
  • the lower lip 104 has its upper end secured by bolts 111 to one end of the holder which in turn is secured at the other end by bolts 112 to the bottom part of the cylindrical header 101.
  • a positioning bar 113 is adapted to set the lip holder 110 in the proper position.
  • the reference numeral 114 designates set screws which are adapted together with the bolts 112 to coarsely adjust the air slit or gap 106. For fine adjustment of this gap, there are provided set screws 115 adjacent to the bolts 111.
  • a block member 116 of a triangular cross section having a vertical inner wall 11'! disposed in opposed relation to the outer wall 118 of the vertical lip 103 so as to define therebetween a liquid chamber 119 for accumulating therein a predetermined level of a coating liquid C.
  • the block 116 has an inclined outer wall 120 and a longitudinal recess 121 substantially parallel thereto for receiving a pair of blade holders 122 and 123 that are secured by bolted keep plate 124 to the outer wall 120 of the block 116.
  • the blade holders 122 and 123 are adapted to hold therebetween a spray tip forming blade 125 of small thickness in a position wherein the edge of this blade isheld in end-to-end abutting relation to the pointed tip of the vertical lip 103 thereby forming a spray tip 126.
  • the tip end of the blade 125 may be spaced minutely apart from the tip of the vertical lip 103 where increased rate of spray is desired, for which purpose there is provided a set screw 143 thereby adjusting the gap between the edge of the blade 125 and the tip of the vertical lip 103.
  • the edge of the blade 125 may be recessed to provide a plurality of depressions 144 through which the coating liquid is allowed to flow out as seen in FIG. 2. These depressions 144 may be preferably about 2mm wide and about 0.8mm deep and spaced by a pitch of about 8mm.
  • a pluralityjof liquid supply tubes 127 each having one end inserted through the block 116 and the other end connected to a liquid supply hose (not shown).
  • An overflow baffle 128 is secured to the vertical inner wall 117 of the block member 116. This baffle is adapted to prevent localized flow of the liquid directly from the tubes 127 into the liquid chamber 119 which would otherwise cause irregularities in the spray of liquid at the tip 126 and hence in the thickness of coat on the substrate.
  • the baffle 128 is thus provided for allowing the liquid to overflow the same and thereby fall uniformly into the liquid chamber.
  • means are provided for moving the liquid chamber forming block 1 16 away from the vertical lip 103 to hold the spray tip 126 wide open so as to facilitate the removal of any foreign matters or coagulated residual liquid from the spray tip 126 and also the cleaning of interior parts of the spray system.
  • the block 116 may be thus held in a fully open, inoperative position during downtime of the machine thereby eliminating the deposition of undesirable coagulated materials on the blade 125 or on the outer wall 118 of the vertical lip 103.
  • the means for holding the block 116 movable comprises an air cylinder 129 having a flange 130 pivotally connected by pin 131 to a support arm 132 secured to the upper end of the vertical lip 103, a piston rod 133 operatively associated with the air cylinder 129 and having a flanged end 134, a first bracket member 135 secured by bolts 136 to the block member 116 and having a horizontal arm 137 pivotally connected to the flanged end 134 of the piston rod 133 and a vertical arm 138 pivotally connected by pin 139 to a horizontal lug 140 extending from a second bracket member 141 secured by bolts 142 to the outer wall 118 of the vertical lip 103.
  • the upward stroke of the piston rod 133 rotates the first bracket member 135, hence the block member 116 clockwise to hold the spray tip 126 wide open.
  • the coating apparatus will be set in the operative position which is substantially perpendicular to the direction of travel of a substrate to be coated.
  • the substrate is shown to be a sheet of nonwoven web S in FIG. 3.
  • Air compressed to about a water column of 2,000 mm is supplied axially of the air header 101 and flows through openings 102 for jetting from the air slit 106.
  • the slit 106 is found locally wider or narrower than desired due to the fact that the lower lip member 104 and its holder 110 are relatively wide, such irregularities in the opening of the slit 106 may be corrected by fine adjustment of bolts 111 and set screws 115.
  • a coating liquid C is supplied from the hoses (not shown) through the supply tubes 127 and flows over the baffle 128 into the liquid chamber 119, until a predetermined level of this liquid is established and maintained.
  • the liquid is fed by suction and atomized at a point just outside the spray tip 126 by a stream of air blown from the jet slit 106.
  • the liquid thus atomized forms a cross-sectionally triangular spray pattern as seen in FIG. 3, which pattern is attributed to the peculiar characteristic of the spray tip 126 which extends linearly widthwise of the machine in association with the air jet slit 106.
  • the gap in the spray tip 126 or the number of depressions 144 in the blade 125 may be increased with proportionate increases in the feed of liquid C to the liquid chamber 119.
  • adjustment of the velocity and pressure ofjet air in the air chamber provides a spray coat of controlled particle size.
  • a spray coating apparatus which comprises a cylindrical air header receiving a supply of compressed air and having a plurality of downwardly directed open ings, a first and a second lip member extending substantially to full length of said cylindrical air header and secured at one end thereof to said header, said first and second lip members defining therebetween an air chamber communicating with said openings of the header and converging at the other or free ends, thus forming thereat an air jet slit for discharging compressed air, a block member disposed in opposed relation to the outer wall of said first lip member and defining therewith a liquid chamber, a blade secured at one end to said block member and having the other end in abutting relation to the free end of said first lip member for forming therebetween a spray tip, and a plurality of liquid supply tubes secured to said block member and supplying a coating liquid to said liquid chamber.
  • a spray coating apparatus as defined in claim 1 wherein said blade is provided along its longitudinal edge with recesses or depressions.
  • a spray coating apparatus which comprises a cylindrical air header receiving a supply of compressed air and having a plurality of downwardly directed oen ings, a first and a second lip member extending substantially to full length of said cylindrical air header and secured at one ends thereof to said header, said first and second lip members defining therebetween an air chamber communicating with said openings of the header and converging at the other or free ends, thus forming thereat an air jet slit for discharging compressed air, a block member disposed in opposed relation to the outer wall of said first lip member and defining therewith a liquid chamber, a blade secured at one 6.
  • said means comprises an air cylinder, a piston rod operatively associated therewith, a bracket member secured at one end to said block member and pivotally connected at the other end to said piston rod.

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  • Nozzles (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
US00265565A 1971-09-10 1972-06-23 Spray coating apparatus Expired - Lifetime US3750955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46069671A JPS522408B2 (enrdf_load_stackoverflow) 1971-09-10 1971-09-10

Publications (1)

Publication Number Publication Date
US3750955A true US3750955A (en) 1973-08-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00265565A Expired - Lifetime US3750955A (en) 1971-09-10 1972-06-23 Spray coating apparatus

Country Status (6)

Country Link
US (1) US3750955A (enrdf_load_stackoverflow)
JP (1) JPS522408B2 (enrdf_load_stackoverflow)
CA (1) CA967356A (enrdf_load_stackoverflow)
FR (1) FR2151827A5 (enrdf_load_stackoverflow)
GB (1) GB1385594A (enrdf_load_stackoverflow)
SE (1) SE389453B (enrdf_load_stackoverflow)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841557A (en) * 1972-10-06 1974-10-15 Nat Steel Corp Coating thickness control and fluid handling
US3845904A (en) * 1973-12-07 1974-11-05 Src Lab Variable flow two stage nozzle
DE2359413A1 (de) * 1973-11-29 1975-06-05 Jagenberg Werke Ag Vorrichtung zum beschichten laufender werkstoffbahnen aus papier, karton, kunststoff o.dgl.
US4132363A (en) * 1975-02-06 1979-01-02 Eduard Kusters Nozzle for producing a wide liquid jet
FR2424112A1 (fr) * 1978-04-26 1979-11-23 Albany Int Corp Couteau a lame d'air a orifice reglable
WO1981003372A1 (en) * 1980-05-19 1981-11-26 I Reba Method and system for producing a liquid spray curtain
US4377985A (en) * 1980-05-19 1983-03-29 Crown Zellerbach Corporation System for producing a liquid spray curtain
US4402200A (en) * 1981-09-04 1983-09-06 Gaston County Dyeing Machine Company Means for applying foamed treating liquor
US4404173A (en) * 1980-09-24 1983-09-13 Unc Recovery Corporation Apparatus for contacting substantially immiscible liquids
US4439405A (en) * 1980-09-24 1984-03-27 Unc Recovery Corporation Method for varying the mixing time and proportions in the contacting of substantially immiscible liquids
US5409733A (en) * 1992-07-08 1995-04-25 Nordson Corporation Apparatus and methods for applying conformal coatings to electronic circuit boards
US5418009A (en) * 1992-07-08 1995-05-23 Nordson Corporation Apparatus and methods for intermittently applying discrete adhesive coatings
US5421921A (en) * 1992-07-08 1995-06-06 Nordson Corporation Segmented slot die for air spray of fibers
US5427317A (en) * 1991-03-27 1995-06-27 Huettlin; Herbert Slotted nozzle for dispensing liquids
US5429840A (en) * 1992-07-08 1995-07-04 Nordson Corporation Apparatus and methods for applying discrete foam coatings
US5609305A (en) * 1994-09-19 1997-03-11 Vortec Corporation Apparatus for providing an air curtain
US5622315A (en) * 1995-03-14 1997-04-22 Nordson Corporation Adjustable slot goating die
US5910050A (en) * 1987-04-03 1999-06-08 Kamterter Ii, Llc Solid matrix conditioning of seeds for sorting purposes
US5974734A (en) * 1987-04-03 1999-11-02 Kamterter Ii, Llc Solid matrix priming of seeds with microorganisms and selected chemical treatment
RU2147709C1 (ru) * 1994-06-01 2000-04-20 Хальдор Топсеэ А/С Газоинжекторное сопло
US6139634A (en) * 1995-05-24 2000-10-31 Matsushita Electric Industrial Co., Ltd. Apparatus for manufacturing electronic devices
US6646181B1 (en) 1987-04-03 2003-11-11 Kamterter Ii, L.L.C. Solid matrix control of seed conditioning using selected cell cycle stages
US20060118657A1 (en) * 2004-11-10 2006-06-08 Spraying Systems Co. Air knife
RU2318160C1 (ru) * 2006-07-12 2008-02-27 Государственное образовательное учреждение высшего профессионального образования Самарский государственный технический университет Способ сжигания горючей смеси и горелка для его реализации
US20080245903A1 (en) * 2007-04-09 2008-10-09 West Virginia University Method and apparatus for online flow control over the span of a high aspect ratio slot jet
FR2924047A1 (fr) * 2007-11-28 2009-05-29 Fpm Ind Soc Par Actions Simpli Procede, dispositif et installation pour la fabrication de panneau par epandage de mousse synthetique
RU2428628C2 (ru) * 2009-09-22 2011-09-10 Виктор Сергеевич Халявин Способ сжигания горючей смеси и горелка для его реализации
US20200315155A1 (en) * 2017-12-22 2020-10-08 Institut National De Recherche En Sciences Et Technologies Pour L'environnement Et L'agriculture System and method for spraying a product, in particular a plant-protection product

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62193049U (enrdf_load_stackoverflow) * 1986-05-28 1987-12-08

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US958999A (en) * 1909-12-16 1910-05-24 Oscar Fordice Hydrocarbon-burner.
US1718556A (en) * 1928-01-28 1929-06-25 Cecil H Harrison Oil burner
US1791854A (en) * 1926-08-06 1931-02-10 J S & J F String Inc Oil burner
US2940418A (en) * 1959-03-27 1960-06-14 Black Clawson Co Paper machinery
US3022016A (en) * 1959-11-13 1962-02-20 Vic Mar Corp Nozzle
US3341354A (en) * 1964-03-11 1967-09-12 Continental Oil Co Curtain coating method and apparatus for applying a non-uniform liquid coating material to sheet stock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US958999A (en) * 1909-12-16 1910-05-24 Oscar Fordice Hydrocarbon-burner.
US1791854A (en) * 1926-08-06 1931-02-10 J S & J F String Inc Oil burner
US1718556A (en) * 1928-01-28 1929-06-25 Cecil H Harrison Oil burner
US2940418A (en) * 1959-03-27 1960-06-14 Black Clawson Co Paper machinery
US3022016A (en) * 1959-11-13 1962-02-20 Vic Mar Corp Nozzle
US3341354A (en) * 1964-03-11 1967-09-12 Continental Oil Co Curtain coating method and apparatus for applying a non-uniform liquid coating material to sheet stock

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841557A (en) * 1972-10-06 1974-10-15 Nat Steel Corp Coating thickness control and fluid handling
DE2359413A1 (de) * 1973-11-29 1975-06-05 Jagenberg Werke Ag Vorrichtung zum beschichten laufender werkstoffbahnen aus papier, karton, kunststoff o.dgl.
US3845904A (en) * 1973-12-07 1974-11-05 Src Lab Variable flow two stage nozzle
US4132363A (en) * 1975-02-06 1979-01-02 Eduard Kusters Nozzle for producing a wide liquid jet
FR2424112A1 (fr) * 1978-04-26 1979-11-23 Albany Int Corp Couteau a lame d'air a orifice reglable
US4270702A (en) * 1978-04-26 1981-06-02 Albany International Corp. Adjustable orifice air knife
WO1981003372A1 (en) * 1980-05-19 1981-11-26 I Reba Method and system for producing a liquid spray curtain
EP0040927A1 (en) * 1980-05-19 1981-12-02 Crown Zellerbach Corporation System for producing a liquid spray curtain for application to a moving web
US4377985A (en) * 1980-05-19 1983-03-29 Crown Zellerbach Corporation System for producing a liquid spray curtain
US4404173A (en) * 1980-09-24 1983-09-13 Unc Recovery Corporation Apparatus for contacting substantially immiscible liquids
US4439405A (en) * 1980-09-24 1984-03-27 Unc Recovery Corporation Method for varying the mixing time and proportions in the contacting of substantially immiscible liquids
US4402200A (en) * 1981-09-04 1983-09-06 Gaston County Dyeing Machine Company Means for applying foamed treating liquor
US6646181B1 (en) 1987-04-03 2003-11-11 Kamterter Ii, L.L.C. Solid matrix control of seed conditioning using selected cell cycle stages
US6076301A (en) * 1987-04-03 2000-06-20 Kamterter Ii Llc Solid matrix priming of seeds with microorganisms and selected chemical treatment
US5910050A (en) * 1987-04-03 1999-06-08 Kamterter Ii, Llc Solid matrix conditioning of seeds for sorting purposes
US5974734A (en) * 1987-04-03 1999-11-02 Kamterter Ii, Llc Solid matrix priming of seeds with microorganisms and selected chemical treatment
US5427317A (en) * 1991-03-27 1995-06-27 Huettlin; Herbert Slotted nozzle for dispensing liquids
US5418009A (en) * 1992-07-08 1995-05-23 Nordson Corporation Apparatus and methods for intermittently applying discrete adhesive coatings
US5421921A (en) * 1992-07-08 1995-06-06 Nordson Corporation Segmented slot die for air spray of fibers
US5429840A (en) * 1992-07-08 1995-07-04 Nordson Corporation Apparatus and methods for applying discrete foam coatings
US5524828A (en) * 1992-07-08 1996-06-11 Nordson Corporation Apparatus for applying discrete foam coatings
US5409733A (en) * 1992-07-08 1995-04-25 Nordson Corporation Apparatus and methods for applying conformal coatings to electronic circuit boards
US5685911A (en) * 1992-07-08 1997-11-11 Nordson Corporation Apparatus for intermittently applying discrete adhesive coatings
RU2147709C1 (ru) * 1994-06-01 2000-04-20 Хальдор Топсеэ А/С Газоинжекторное сопло
US5609305A (en) * 1994-09-19 1997-03-11 Vortec Corporation Apparatus for providing an air curtain
US5622315A (en) * 1995-03-14 1997-04-22 Nordson Corporation Adjustable slot goating die
US6139634A (en) * 1995-05-24 2000-10-31 Matsushita Electric Industrial Co., Ltd. Apparatus for manufacturing electronic devices
US20060118657A1 (en) * 2004-11-10 2006-06-08 Spraying Systems Co. Air knife
US7461797B2 (en) 2004-11-10 2008-12-09 Spraying Systems, Co. Air knife
RU2318160C1 (ru) * 2006-07-12 2008-02-27 Государственное образовательное учреждение высшего профессионального образования Самарский государственный технический университет Способ сжигания горючей смеси и горелка для его реализации
US20080245903A1 (en) * 2007-04-09 2008-10-09 West Virginia University Method and apparatus for online flow control over the span of a high aspect ratio slot jet
US7563322B2 (en) 2007-04-09 2009-07-21 West Virginia University Method and apparatus for online flow control over the span of a high aspect ratio slot jet
FR2924047A1 (fr) * 2007-11-28 2009-05-29 Fpm Ind Soc Par Actions Simpli Procede, dispositif et installation pour la fabrication de panneau par epandage de mousse synthetique
EP2065098A3 (fr) * 2007-11-28 2009-12-09 FPM Industries Procédé, dispositif et installation pour la fabrication de panneau par épandage de mousse synthétique
RU2428628C2 (ru) * 2009-09-22 2011-09-10 Виктор Сергеевич Халявин Способ сжигания горючей смеси и горелка для его реализации
US20200315155A1 (en) * 2017-12-22 2020-10-08 Institut National De Recherche En Sciences Et Technologies Pour L'environnement Et L'agriculture System and method for spraying a product, in particular a plant-protection product
US11882822B2 (en) * 2017-12-22 2024-01-30 Institut National De Recherche Pour L'agriculture, L'alimentation Et L'environnement System and method for spraying a product, in particular a plant-protection product

Also Published As

Publication number Publication date
SE389453B (sv) 1976-11-08
GB1385594A (en) 1975-02-26
DE2245116A1 (de) 1973-03-15
JPS522408B2 (enrdf_load_stackoverflow) 1977-01-21
CA967356A (en) 1975-05-13
FR2151827A5 (enrdf_load_stackoverflow) 1973-04-20
JPS4834947A (enrdf_load_stackoverflow) 1973-05-23
DE2245116B2 (de) 1975-09-25

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