EP0730912A2 - Méthode d'application de pulvérisation en rideau et base d'application dans un appareil d'application de pulvérisation en rideau - Google Patents

Méthode d'application de pulvérisation en rideau et base d'application dans un appareil d'application de pulvérisation en rideau Download PDF

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Publication number
EP0730912A2
EP0730912A2 EP96301486A EP96301486A EP0730912A2 EP 0730912 A2 EP0730912 A2 EP 0730912A2 EP 96301486 A EP96301486 A EP 96301486A EP 96301486 A EP96301486 A EP 96301486A EP 0730912 A2 EP0730912 A2 EP 0730912A2
Authority
EP
European Patent Office
Prior art keywords
application
application nozzle
bottom opening
air jetting
hole
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Withdrawn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
EP96301486A
Other languages
German (de)
English (en)
Other versions
EP0730912A3 (fr
Inventor
Shoji Hidaka
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.)
Sun Tool Corp
Original Assignee
Sun Tool Corp
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 Sun Tool Corp filed Critical Sun Tool Corp
Publication of EP0730912A2 publication Critical patent/EP0730912A2/fr
Publication of EP0730912A3 publication Critical patent/EP0730912A3/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • 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
    • B05B7/0884—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being aligned
    • 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
    • B05B7/0807—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 to form intersecting jets
    • B05B7/0861—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 to form intersecting jets with one single jet constituted by a liquid or a mixture containing a liquid and several gas jets

Definitions

  • This invention relates to the method of applying spray of liquid agent (application agent), such as adhesive agent, paint, coating agent for forming film or the like, which is atomized by making pressurized air act thereon, to a material for application and also a nozzle device for spray application in the cases of woodworking (manufacturing of composite wood by gluing, application of a brightener to the wood surface and coloring, pattern forming, etc. on wood surface), processing of nonwoven fabric goods (manufacturing of thrown-away diapers by adhering nonwoven fabrics), processing of household furniture (application of a brightener to the surface of furniture and coloring, pattern forming, etc. on the surface of furniture) and food processing (coloring of food surface, application of a surface brightener, etc.).
  • application agent such as adhesive agent, paint, coating agent for forming film or the like
  • this invention relates to the method of applying spray uniformly in wider width of application by widening the range of spray application to a material for application and also a spray application nozzle device.
  • an application nozzle hole group 11P comprising many application nozzle holes and air jetting hole groups 12P, each comprising many air jetting holes (pressurized air holes), are arranged adjacent to each other in the direction crossing the direction of conveying a material for application W, and by jetting pressurized air flow K from the air jetting hole groups 12P adjacent to a row of hot-melt adhesive beat h jetted from many application nozzle holes 11p, many hot-melt; adhesive beats h are extended by the pressurized air flow K into a slender fiber-shape.
  • the air jetting holes are formed adjacent to the application nozzle hole, on the front side of conveyance and on the rear side of conveyance, and the pressurized air flow of curtain-shape from the pressurized air hole is made to act on the hot-melt adhesives beat jetted from the application nozzle group.
  • hot-melt adhesives are applied in the state of fiber-shaped adhesive heat to the application surface, even if pressure of pressurized air from the air jetting hole (pressurized air hole) is raised, springing back of adhesives will not occur because adhesives reach the application surface in the condition of fiber-shaped adhesives beat.
  • general application agents instead of hot-melt adhesives, are used in the prior invention they are applied in atomized state instead of fiber-like state.
  • the application width can be enlarged arbitrarily and pressure of pressurized air is kept low.
  • the first invention provides the method of applying curtain-shaped spray which is characterized in that for atomizing application agents by making pressurized air from the air jetting hole act on application agent beat from the application nozzle holes arranged in the direction of crossing the conveying direction of application line, pressurized air is jetted from the air jetting holes which are formed in the direction crossing the conveying direction the application line A and in the shape of groove so that it is formed into curtain-like pressurized air flow which acts on application agent beat from the application nozzle hole group.
  • the second invention provides an application nozzle device characterized in that in the curtain-like spray application apparatus wherein an application nozzle hole group comprising many application nozzle holes arranged in the direction crossing the conveying direction of application line is formed and spray application is made into curtain-like shape by making pressurized air from the air jetting hole act on application agent beat from the application nozzle hole group, the air jetting hole is made in groove-shape so that its bottom opening is a slit of small width, pressurized air flow from the air jetting hole is made into curtain-like pressurized air flow in the direction crossing the conveying direction of application line A, and the bottom opening of the application nozzle hole group at the nozzle unit of the application nozzle device is arranged adjacent to the bottom opening of the air jetting hole.
  • the third invention provides an application nozzle device in the curtain-like spray application apparatus as mentioned in the invention, wherein the bottom opening of the air jetting hole is extended toward the outside of the extreme bottom opening of the application nozzle hole group in the direction of application width so that both ends of the bottom openings of the air jetting holes are located a little sideways (outwardly) from the extreme side ends of the bottom openings of the application nozzle hole group.
  • Fig. 1 is a vertical section, showing an outline of the application nozzle device of the present invention.
  • Fig. 2 is a cross section of the nozzle unit.
  • Fig. 3 is a bottom view of the nozzle unit.
  • Fig. 4 is a perspective view of the shim plate having comb-like grooves g for forming the application nozzle hole group.
  • Fig. 5 is a vertical section of the main part of the nozzle unit of the invention of the prior application.
  • Fig. 6 is an explanation drawing, explaining the application action by the nozzle unit in Fig. 5.
  • Fig. 7 is an explanation drawing of the general spray application.
  • Fig. 8 is an explanation drawing of the application surface at the time application width is enlarged in the known hot-melt adhesives melt blow spray application.
  • the adhesives applying nozzle apparatus B is arranged opposite to the upper surface of a material for application W being conveyed in the conveying direction P by an application line A.
  • the adhesives applying nozzle apparatus B is composed of a nozzle unit 1 arranged above the application line A, with an application nozzle hole group 11 located in the direction crossing the direction P of conveying the material for application W (in the embodiment, the direction crossing the direction P), and an application agent (adhesive agent, paint, brightener, etc.) supply controlling valve 2 which is integral with the nozzle unit 1.
  • the nozzle unit 1 has an application nozzle hole group 11, comprising many application nozzle holes 11a, and an air jetting hole 12.
  • two air jetting holes 12F and 12R are arranged on both sides of the application nozzle hole group 11. Both of the air jetting hole12F and air jetting hole 12R are connected to a pressurized air source 4 through the medium of a pressurized air hole 13.
  • Heaters 9 are provided inside the nozzle unit 1 and inside the application agent supply controlling valve 2 for keeping application agent being supplied within the limits of specified temperatures.
  • application agent is hot-melt adhesive agent
  • it is required to heat the nozzle unit 1 by the heater to keep hot-melt adhesives passing through the application nozzle hole 11 within the limits of specified temperatures but a heater may be omitted in the case of general application agents (adhesives, paints, brighteners, etc.) for which heating is not required.
  • the application nozzle hole group 11 is arranged in a line in the direction crossing at right angles the direction P of conveying the material for application W and the air jetting holes 12F and 12R are arranged in front and in rear of the application nozzle hole group 11.
  • the air jetting hole 12 is made in groove-shape and its bottom opening (m) is a slit of small width (refer to Fig. 3).
  • a bottom opening (n) of the application nozzle group 11 and the bottom opening (m) of the air jetting hole at the bottom surface of the nozzle unit 1 are adjacent to each other (refer to Fig. 3), whereas in the prior invention space exists between the bottom opening (n) of the application nozzle hole group 11 and the bottom opening (m) of the air jetting hole 12.
  • the application nozzle hole group 11 can be formed by making many small holes but in the embodiment, as shown in Fig. 4 it is formed by a shim plate 10 having comb-like grooves g.
  • the shim plate 10 is interposed between the first block 1F and the second block 1R and in Fig. 2, it is interposed between a pair of application nozzle blocks 10F and 10R.
  • the air jetting holes 12F and 12R are formed by making grooves of flat plate-shape in the first block 1F and the second block 1R but in Fig. 2, these holes are formed by making space between the inner lower part of the first block 1F and the outer lower part of the application nozzle block 10F and by making space between the inner lower part of the second block 1R and the outer lower part of the application nozzle block 10R.
  • an application nozzle hole 11a is formed by space g made between comb-like pieces 10A of the shim plate 10.
  • the bottom opening (n) of the application nozzle hole group 11 at the bottom surface of the nozzle block 1 is made square in shape. Consequently, as shown in Fig. 3, the bottom opening (n) of the application nozzle hole group 11 and the bottom opening (m) of the air jetting hole 12 are adjacent to each other, in linear contact with two sides of the first block 1F and the second block 1R.
  • Numeral 13a (in Fig. 2) denotes a horizontal hole which connects the air jetting hole 12 to the pressurized air hole 13.
  • the bottom opening (m) of the air jetting hole is extended to the outside of the bottom opening (n) of the application nozzle hole group in the direction of application width so that both end portions of the bottom opening(m) of the air jetting hole are slightly protruding from the extreme side ends of the bottom opening (n) of the application nozzle hole group.
  • application agent beat H is sprayed onto the material W being conveyed so as to apply application agent beat H to the desired portion of the material W. This is done also by the known application apparatus.
  • the adhesives supply controlling valve 2 is provided with a valve housing 20 having an application agent inlet 21, a supply hole 22 and a return hole 23.
  • a valve chest 24 is arranged in the valve housing 20 and by operating a vertically movable valve body 25 (in the valve chest 24) up and down by means of a valve body operating mechanism 26 which is worked by operation air or by an electromagnetic valve, supply and non-supply of application agent to the nozzle unit 1 and return of application agent to the application adhesive supply source 3 through the return hole 23 at stoppage of application are effected and thus circulation of hot-melt adhesive agent at stoppage of application is effected and degradation of application agent due to stagnating is prevented.
  • the supply hole 22 and the application nozzle hole group 11 are connected to each other through the medium of a supply hole 7 in vertical direction, a lateral hole 7a at a lower end of the supply hole 7, a rotary mask valve 5 and a lateral hole 8.
  • the rotary mask valve 5 has a through hole 6a and an application mask surface 6 and by selecting the speed of revolution of the rotary mask valve 5 and the shape of the application mask surface 6, the application nozzle hole group 11 to which application agent is supplied can be arranged in the selective state for the selective range of application to the material W.
  • numeral 19 denotes a belt for uniting the first block IF, the application nozzle block 10f, the application nozzle block 10R and, the second block 1R in a body.
  • Numerals 27, 28 and 29 denote a bolt, a fitting plate and an 0-ring respectively.
  • the application range in the direction of width of material W is changeable by replacement with a shim plate having different position of existence of the comb-like grooves g.
  • the application range in the direction of width of the material W can also be changed as desired by selecting the mask window of the mask plate disclosed in the prior invention (Patent Application No 63308/1992 "Hot-melt adhesives application apparatus").
  • An upper end of the air jetting hole 12 opens to the pressurized air hole 13 in lateral direction and is connected to the pressurized air source 4 through the medium of the pressurized air hole 13.
  • application agent H is supplied selectively to the application nozzle hole group 11 and pressurized air is jetted from the pressurized air hole 13.
  • the application agent beat H jetted from each application nozzle hole 11a of the application nozzle hole group 11 is atomized by effect of pressurized air from the air jetting hole 13 and falls onto the application surface of the material W as it is spreading in conical shape (spray application) but since curtain-like pressurized air flows K are formed as they are sandwiching the application agent beat H therebetween, spreading of the application agent beat H toward the front and rear of conveyance is prevented. Consequently, spray application range of the application agent beat H is made in waterfall-like shape or curtain-like shape in the direction crossing at right angles the material W and thus nearly uniform application width is obtained in the direction crossing at right angles the material W.
  • pressurized air from the air jetting hole 12 acts effectively on the adhesive agent beat H from the application nozzle hole group 11 and therefore pressure of pressurized air to be supplied to the air jetting hole 12 can be set lower than in the case of the prior invention.
  • the air jetting hole 12 is disposed in front of and in rear of the application nozzle hole group 11 but it may be disposed only at one side of the application nozzle hole group 11 for the same purpose.
  • section of the application nozzle hole 11a is made in square-shape with each side of 1mm and space between the pressurized air holes 12 is made 1mm.
  • the application width can be changed as desired by arranging nozzle units 1 in a file, in the direction crossing at right angles the conveying direction of the material W.
  • the air jetting hole 12 in groove-shape and by making the bottom opening of the air jetting hole 12 in slit-shape of small width, flow of pressurized air from the air jetting hole 12 is formed in curtain-like shape in the direction crossing the conveying direction of the application line and the flow of pressurized air of curtain-shape K is made to act on the application agent beat H jetted from each application nozzle hole 11a of the application nozzle hole group 11. Therefore, the application agent beat H which falls on the application surface of the material W as it is atomized and spreading conically is prevented from expanding in the conveying direction of the material W by curtain-like pressurized air flows K formed adjacent thereto.
  • pressurized air from the air jetting hole 12 act effectively on the application agent beat H from the application nozzle hole group 11 and accordingly pressure of pressurized air to be supplied to the air jetting hole 12 can be set lower than in the case of the prior invention, namely, pressure of the application-agent which reached the application surface of the material W is lower and accordingly dispersion of the application agent due to springing back of application agent on the application surface of the material W is almost reduced to zero. This ensures economical application work and maintains good working environment.
  • the bottom opening (m) of the air jetting hole 12 and the bottom opening (n) of the application nozzle hole 11a are connected adjacently to each other, but entry of the application agent by capillary phenomenon into the air jetting hole 12 at the time of stoppage of supply of pressurized air from the air jetting hole 12 can be prevented by making the air jetting hole 12 in groove-shape (instead of small holes group in the case of the prior invention).
  • entry of application agent into the air jetting hole 12 at the time of stoppage of supply of pressurized air (at the time of stoppage of application operation) is prevented and maintenance work is made easier
  • the bottom opening of the air jetting hole is extended toward the outer side of the bottom opening of the application nozzle hole group and in the direction of application width, namely, the bottom opening of the air jetting hole exists sideways from the extreme side end of the bottom opening of the application nozzle hole group and the flow of pressurized air K exists sideways in application width direction from the side end in application width direction of curtain-like application agent beat H. Consequently, application agent beat H at side end in application width direction flows down in perpendicular direction by guidance of pressurized air flow K and dispersing of it sideways in application width direction is prevented.
  • Plural application nozzle devices are arranged in lengthwise direction or in zigzag fashion for arbitrary selection of application width. Under this arrangement, if application agent beat H disperses sideways in application width direction, application width at side end of each application nozzle device will become larger but the third invention of the present application solves this problem and application surface of uniform application thickness can be obtained even if plural application nozzle devices are arranged in continuance.

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  • Nozzles (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP96301486A 1995-03-06 1996-03-05 Méthode d'application de pulvérisation en rideau et base d'application dans un appareil d'application de pulvérisation en rideau Withdrawn EP0730912A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP74536/95 1995-03-06
JP07453695A JP3661019B2 (ja) 1995-03-06 1995-03-06 カーテン状スプレー塗布装置における塗布ノズル装置

Publications (2)

Publication Number Publication Date
EP0730912A2 true EP0730912A2 (fr) 1996-09-11
EP0730912A3 EP0730912A3 (fr) 1998-01-07

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Application Number Title Priority Date Filing Date
EP96301486A Withdrawn EP0730912A3 (fr) 1995-03-06 1996-03-05 Méthode d'application de pulvérisation en rideau et base d'application dans un appareil d'application de pulvérisation en rideau

Country Status (2)

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EP (1) EP0730912A3 (fr)
JP (1) JP3661019B2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109312541A (zh) * 2016-05-30 2019-02-05 福伊特专利有限公司 帘式涂布机构

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004154665A (ja) * 2002-11-06 2004-06-03 Suntool Corp ホットメルト接着剤スプレー塗布方法およびホットメルト接着剤スプレー塗布装置の塗布ノズル装置
US7798434B2 (en) 2006-12-13 2010-09-21 Nordson Corporation Multi-plate nozzle and method for dispensing random pattern of adhesive filaments
US8074902B2 (en) * 2008-04-14 2011-12-13 Nordson Corporation Nozzle and method for dispensing random pattern of adhesive filaments
JP5599651B2 (ja) * 2009-08-12 2014-10-01 江崎グリコ株式会社 香料が塗布されたチューインガムの製造方法
JP5959717B2 (ja) 2013-03-07 2016-08-02 株式会社サンツール ホットメルト接着剤塗布方法およびホットメルト接着剤塗布装置
WO2014178818A1 (fr) * 2013-04-29 2014-11-06 Hewlett-Packard Development Company, L.P. Enduction fente sélective

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4072772A (en) * 1973-08-09 1978-02-07 Ppg Industries, Inc. Linear curtain spray applicator
WO1991018682A1 (fr) * 1990-05-30 1991-12-12 Weyerhaeuser Company Applicateur servant a diriger des materiaux de revetement sur un substrat
WO1992012803A1 (fr) * 1991-01-24 1992-08-06 Weyerhaeuser Company Procede permettant de diriger un ecoulement allonge de materiaux de revetement, vers un substrat
EP0498600A1 (fr) * 1991-02-06 1992-08-12 Minnesota Mining And Manufacturing Company Unité de pulvérisation pour former des jets en éventail

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4072772A (en) * 1973-08-09 1978-02-07 Ppg Industries, Inc. Linear curtain spray applicator
WO1991018682A1 (fr) * 1990-05-30 1991-12-12 Weyerhaeuser Company Applicateur servant a diriger des materiaux de revetement sur un substrat
WO1992012803A1 (fr) * 1991-01-24 1992-08-06 Weyerhaeuser Company Procede permettant de diriger un ecoulement allonge de materiaux de revetement, vers un substrat
EP0498600A1 (fr) * 1991-02-06 1992-08-12 Minnesota Mining And Manufacturing Company Unité de pulvérisation pour former des jets en éventail

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109312541A (zh) * 2016-05-30 2019-02-05 福伊特专利有限公司 帘式涂布机构

Also Published As

Publication number Publication date
EP0730912A3 (fr) 1998-01-07
JPH08243461A (ja) 1996-09-24
JP3661019B2 (ja) 2005-06-15

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