WO2000058017A1 - Procede et dispositif pour appliquer un revetement par pulverisation en spirale - Google Patents
Procede et dispositif pour appliquer un revetement par pulverisation en spirale Download PDFInfo
- Publication number
- WO2000058017A1 WO2000058017A1 PCT/JP2000/001853 JP0001853W WO0058017A1 WO 2000058017 A1 WO2000058017 A1 WO 2000058017A1 JP 0001853 W JP0001853 W JP 0001853W WO 0058017 A1 WO0058017 A1 WO 0058017A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressurized air
- spiral
- hole
- spray coating
- spiral spray
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
-
- 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
- B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
Definitions
- the invention of the present application is to apply a rotating jet of pressurized air (air jet that rotates in a circle around the adhesive hole in plan view) to a hot melt adhesive beat discharged from the center of the nozzle tip.
- the present invention relates to a spiral spray coating method and a coating apparatus for forming a spiral (spiral) spray coating pattern to expand a coating range and a coating width.
- Japanese Patent Application Laid-Open No. Sho 61-1990 "Method and apparatus for spraying a molten adhesive” is known.
- the publication discloses that a pressurized air to be brought into contact with a hot-melt adhesive bead discharged from an adhesive hole of a nozzle is used as a rotary jet to apply in a spiral spray pattern. It discloses a coating technique that expands the coating width on the substrate by enlarging the coating width.
- the viscosity of the supplied hot melt adhesive is low.
- the rotation of the spiral spray pattern is extremely reduced due to the high viscosity of the hot-melt hot melt adhesive discharged from the adhesive hole of the nozzle device.
- a filamentary spray pattern as indicated by H0 in FIG. ** 10 is obtained, and no spiral rotation pattern occurs.
- the spiral shape is not formed, there is a problem that the application in the spiral spray pattern is practically impossible.
- the particles (also referred to as shots, hooks, granules, etc.) Occurs.
- the particles p land on the coating surface of the base material (film, etc.) and melt the base material (film, etc.) to form holes, thereby damaging the base material (film, etc.) and deteriorating the product value.
- the particles p are scattered every time when the coating is repeated intermittently, and the coating line and other coating work sites are soiled.
- the present invention is capable of applying a high-viscosity hot melt adhesive or resin in a high-speed rotating spiral spray pattern, and in addition, can obtain a regular application width and a shaped spiral spray pattern. It is an object to provide a spray coating method and apparatus.
- the present invention has an object to reduce the size of the grain p and to set the landing point of the grain p within the range of the spiral rotation pattern in order to solve the problem that the grain is generated at the start of coating or at the time of intermittent coating.
- an object of the present invention is to prevent the generation of accompanying silver and to block the accompanying silver in spiral spray application. Disclosure of the invention
- the first invention of the present application provides a spoiler by applying a rotating jet of pressurized air to a hot-water and a soft-melt adhesive beet that are discharged through an adhesive hole at the center of the nozzle tip.
- a large number of first pressurized air holes arranged concentrically around the opening of the adhesive hole to form a rotating jet of pressurized air.
- An air flow is formed, and a second pressurized air flow ⁇ 2 is supplied to the outside of the first pressurized air flow K1, so that the air curtain by the second pressurized air is formed outside the spiral of the hot melt adhesive fiber.
- a spiral spray coating method is characterized in that, in the first invention, the second pressurized air flow # 2 is supplied independently of the first pressurized air flow K1.
- the third invention of the present application is directed to forming a spiral spray application pattern by applying a rotating jet of pressurized air to a hot melt adhesive beat discharged from an adhesive hole at the center of a nozzle tip.
- a first pressurized air hole group consisting of a large number of first pressurized air holes concentrically arranged around the opening of the adhesive hole is formed to form a rotary jet of pressurized air, Forming a second pressurized air flow discharged from a number of second pressurized air holes concentrically arranged with the first pressurized air holes and spaced outwardly, and forming an outer periphery of the first pressurized air holes;
- the second pressurized air hole group is formed concentrically.
- the pressurized air supply path for the first pressurized air hole group and the second pressurized air supply path for the second pressurized air hole group are made independent from each other.
- a spiral spray coating device is provided.
- the first pressurized air hole is tilted toward the center side with the tip opening side toward the center, and the first pressurized air hole is perpendicular to the diametrical longitudinal section of the nozzle tip. It is characterized by being formed in the direction.
- the sixth invention of the present application is the sixth invention, characterized in that the first pressurized air hole is inclined in a longitudinal section in a concentric direction for regulating the arrangement of the first pressurized air hole.
- FIG. 1 is a longitudinal sectional view of a nozzle tip according to a first embodiment of the third invention of the present application.
- FIG. 2 is a plan view in which the boss is omitted.
- FIG. 3 is an explanatory view of the positions of the adhesive holes, the pressurized air holes, and the second pressurized air holes on the bottom surface in the same manner as in the plan view.
- Figure 4 is a sectional view by '[rho Ru in FIG. 2 SS line (concentric circles showing the arrangement of the second pressurized air pores).
- FIG. 5 is a front view showing a partial cross section of the gun unit of the spiral spray application device.
- FIG. 6 is a longitudinal sectional view of a nozzle tip according to a second embodiment of the third invention of the present application.
- FIG. 7 is an explanatory diagram of the positions of the adhesive holes, the pressurized air holes, and the second pressurized air holes on the bottom surface, similarly to FIG. 3.
- FIG. 8 is a front view similar to FIG. 5, showing a gun unit in partial cross section.
- FIG. 9 is a longitudinal sectional view of the nozzle tip according to the fourth embodiment of the present invention.
- FIG. 10 is an explanatory diagram of positions on the bottom surface of the adhesive hole, the pressurized air hole, and the second pressurized air hole, similarly to FIG.
- FIG. 11 is a front view similar to FIG. 5 and showing a gun unit in partial cross section.
- FIG. 12 is a longitudinal sectional view of a nozzle tip according to a second embodiment of the fourth invention of the present application.
- FIG. 13 is an explanatory diagram of the action of the auxiliary airflow from the second pressurized air hole in the first invention of the present application. .
- FIG. 14 is an operation explanatory view of the first invention of the present application.
- FIG. 15 is an explanatory view of the operation when the application surface is similarly enlarged.
- FIG. 16 is an operation explanatory view showing that particles similarly fall into the application range.
- FIG. 17 is an explanatory diagram corresponding to FIG. 14 in the prior art.
- FIG. 18 is an explanatory view corresponding to FIG. 16 in the prior art, and shows that the particles fall out of the coating range and that the accompanying layer Ka is present.
- FIG. 5 shows a gun unit of the spiral spray coating device, which is composed of a hot melt supply control valve 4, a gun base 3, a nozzle body 2, and a nozzle tip 1.
- the nozzle tip 1 has an adhesive hole 11 at the center and a plurality of pressurized air holes 12 concentrically arranged with respect to the adhesive hole 11 at an intermediate portion.
- the plurality of pressurized air holes 12 are formed in the nozzle tip 1 at an inclination angle and a rotation angle (eccentric angle) 5.
- Conical protrusions 14 are continuous in the center of the bottom surface of the nozzle tip 1 in the opposite direction, adhesive holes 11 are opened at the lower end of the conical protrusions 14, and a plurality of pressurized air holes 1 2 It is open to the bottom 1a of the nozzle tip 1 near the upper end.
- a boss 5 surrounding the adhesive hole 11 is formed on the upper surface 1 b of the nozzle tip 1, and a recess 6 is formed around the boss.
- a mounting screw 7 is formed in the boss 5, and in the mounting state shown in FIG. 5, the nozzle body 2 and the boss 5 of the nozzle tip 1 are integrated via a screwing structure 8. Further, the recess 6 forms a pressurized air chamber 9 with the lower surface of the nozzle body 2.
- the nozzle tip 1 has an upper surface 1 At a position closer to the outside of b, a plurality of second pressurized air holes 13 are formed concentrically with respect to the adhesive hole 11 and are substantially vertical in the diametrical longitudinal section of the nozzle chip.
- the second pressurized air hole 13 is inclined in a concentric direction in which the second pressurized air hole 13 is arranged. That is, the second pressurized air hole 13 is deviated such that the opening of the second pressurized air hole 13 on the bottom surface 1a precedes the concentric direction of the concentric arrangement of the second pressurized air hole 13. (See Fig. 4).
- FIGS. 6 to 8 show a second embodiment of the third invention of the present application.
- a screwing structure 8A is used instead of the screwing structure 8 in the first embodiment described above.
- the screwing structure 8A is formed between the inner surface of the cylindrical body 1B, which is an extension of the nozzle tip 1A, and the tip protrusion 2B formed on the nozzle body.
- reference numeral 1C denotes a seal member for blocking between the adhesive passage and the pressurized air passage.
- FIG. 9 to 11 show an embodiment of the fourth invention of the present application.
- the second pressurized air passage 9 with respect to the second pressurized air hole 13 is shown.
- B is configured independently of the first pressurized air passage 9A for the first pressurized air hole 12.
- the fourth invention of the present application can also be implemented by dividing into Xv and the first pressurized air passage 9A near the center to form two independent chambers.
- a substrate (a material to be coated with hot melt adhesive H, for example, a polyester film on a sheet) is placed on the adhesive application line, transported in one direction, and installed above the adhesive application line.
- the hot melt adhesive is applied from the nozzle tip 1 of the gun gun that has been conveyed to the upper surface of the adhesive application line during transport. Applying the hot melt adhesive to a predetermined portion of the base material by spraying the material toward the material is the same as in a known hot melt adhesive and a known application device.
- the thread-like molten adhesive h discharged from the adhesive hole 11 of the nozzle tip 1 of the gun unit has a plurality of pressurized air holes 12 concentrically arranged with the adhesive hole 11.
- the first pressurized air flow (swirling pressurized air flow) K1 by the discharged pressurized air flow, the discharged thread-like molten adhesive h is swirled and stretched to form a spiral shape, adhesive fiber Spiral (spiral) Rotation pattern HI is formed and sprayed on the application surface.
- the overlap of the multiple ellipses H3 is dense and the multiple ellipses are close to each other.
- the pattern width of the spiral (spiral) rotation pattern H4 is increased, and the application area can be increased. Therefore, when spraying on a surface in the width direction using multiple gun units (nozzles), the The number of units (nozzles) to be installed can be reduced.
- the second pressurized air flow (auxiliary pressurized air flow) from the second pressurized air hole 13 (auxiliary pressurized air flow) K2 acts to generate particles at the start of spray application (also referred to as shots, hooks, granules, etc.) p Is reduced by 30% to 80%.
- the particles P land in the spiral rotation pattern H5 (see FIG. 16). Eliminates the problem of molten hot-melt resin particles landing and creating molten holes in the product, deteriorating the value of the product, and the problem of splattering at unspecified locations on the processing machine and contaminating the processing machine.
- the auxiliary pressurized air flow from the plurality of second pressurized air holes is rotated in the concentric direction of the arrangement of the second pressurized air holes, and the spirals
- a rotating auxiliary pressurized air flow to the rotation pattern, the spiral rotation of the fibrous adhesive is accelerated, and the effect of the first invention is enhanced, and a spiral spray of high-viscosity hot melt resin is sprayed. Can be performed well.
- the auxiliary pressurized air flow k2 from the second pressurized air hole 13 descends vertically in a circular state and spikes the adhesive fiber.
- the accompanying layer Ka prevents the adhesive fiber from entering the spiral helical rotation pattern HI.
- the spiral rotation pattern HI of the adhesive fiber cuts off the accompanying shaft.
- the flow rate of the first pressurized air flow Kl And the flow rate of the second pressurized air flow K 2 can be set to any value. Further, the first pressurized air flow Kl and the second pressurized air flow K2 can be different gases. For example, only one of the first pressurized airflow K1 and the second pressurized airflow K2 is emptied. Worry
- the invention of the present application is characterized in that the spiral (spiral) rotation pattern of the adhesive fiber is made to act by the second pressurized air flow (auxiliary pressurized air flow) K2 from the second pressurized air hole. It has the effect of making it possible to use spiral spray of viscosity hot melt resin.
- the productivity can be increased by enlarging the application area by enlarging the rotating diameter.
- the problems grains during intermittent application occurs, that you can small Kude grain, can be solved by the to 1 0 within the landing point of the grain spiral (helical) rotating pattern .
- the spiral spray coating method and the spiral spray coating device according to the present invention automatically apply the adhesive to the base material being transferred on the coating line. Suitable for moving and continuous spray application.
Landscapes
- Nozzles (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00911371A EP1181984A4 (en) | 1999-03-29 | 2000-03-27 | METHOD AND DEVICE FOR APPLYING A COATING BY SPIRAL SPRAYING |
US09/890,380 US6745948B1 (en) | 1999-03-29 | 2000-03-27 | Method and device for spiral spray coating |
AU33285/00A AU3328500A (en) | 1999-03-29 | 2000-03-27 | Method and device for spiral spray coating |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12462499 | 1999-03-29 | ||
JP11/124624 | 1999-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000058017A1 true WO2000058017A1 (fr) | 2000-10-05 |
Family
ID=14890031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/001853 WO2000058017A1 (fr) | 1999-03-29 | 2000-03-27 | Procede et dispositif pour appliquer un revetement par pulverisation en spirale |
Country Status (4)
Country | Link |
---|---|
US (1) | US6745948B1 (ja) |
EP (1) | EP1181984A4 (ja) |
AU (1) | AU3328500A (ja) |
WO (1) | WO2000058017A1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6991178B2 (en) * | 2003-01-24 | 2006-01-31 | Dürr Systems, Inc. | Concentric paint atomizer shaping air rings |
JP4622312B2 (ja) | 2003-08-26 | 2011-02-02 | トヨタ自動車株式会社 | 車両 |
CA2486829A1 (en) * | 2004-11-04 | 2006-05-04 | Christopher John Nichols | Tile coating |
DE102007006547B4 (de) | 2007-02-09 | 2016-09-29 | Dürr Systems GmbH | Lenkluftring und entsprechendes Beschichtungsverfahren |
JP5293989B2 (ja) * | 2007-07-24 | 2013-09-18 | ノードソン株式会社 | 少量液体の噴霧装置 |
KR20110011674A (ko) * | 2008-05-13 | 2011-02-08 | 그라코 미네소타 인크. | 축적을 최소화하는 스프레이 건 팁 |
WO2012051079A1 (en) * | 2010-10-12 | 2012-04-19 | Husky Injection Molding Systems Ltd | Mold-tool system having outlets directing melt stream along intersecting transmission paths |
US9168554B2 (en) | 2011-04-11 | 2015-10-27 | Nordson Corporation | System, nozzle, and method for coating elastic strands |
US8794177B2 (en) * | 2011-08-12 | 2014-08-05 | Honda Motor Co., Ltd. | Coating method and coating apparatus |
US9682392B2 (en) | 2012-04-11 | 2017-06-20 | Nordson Corporation | Method for applying varying amounts or types of adhesive on an elastic strand |
US9034425B2 (en) | 2012-04-11 | 2015-05-19 | Nordson Corporation | Method and apparatus for applying adhesive on an elastic strand in a personal disposable hygiene product |
DE102017202258B3 (de) * | 2017-02-13 | 2018-07-26 | Ford Global Technologies, Llc | Düse zum Ausblasen von Druckluft |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61200869A (ja) | 1985-03-01 | 1986-09-05 | ロ−ラント・オツト− | 溶融接着剤をスプレーするための装置 |
JPH03146160A (ja) * | 1989-11-01 | 1991-06-21 | Nordson Kk | ホットメルト接着剤の塗布方法及び装置 |
JP3047146U (ja) * | 1997-09-12 | 1998-03-31 | 華光造機株式会社 | 塗装ガン装置 |
JP3048747U (ja) * | 1997-11-07 | 1998-05-22 | 啓臣 桑原 | 塗装ガン装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1109706B (de) * | 1959-06-06 | 1961-06-29 | Maschf Augsburg Nuernberg Ag | Farbduese fuer Pumpfarbwerke |
US4171096A (en) * | 1977-05-26 | 1979-10-16 | John Welsh | Spray gun nozzle attachment |
US4969602A (en) * | 1988-11-07 | 1990-11-13 | Nordson Corporation | Nozzle attachment for an adhesive dispensing device |
US4991772A (en) * | 1989-01-30 | 1991-02-12 | Robotic Vision Systems, Inc. | Multiple air-stream sealant control |
US5102484A (en) * | 1990-06-26 | 1992-04-07 | J&M Consultants Inc. | Method and apparatus for generating and depositing adhesives and other thermoplastics in swirls |
CA2209274A1 (en) * | 1996-07-19 | 1998-01-19 | Patrick Thomas Hogan | Method and apparatus for applying a liquid coating with an improved spray nozzle |
US5964418A (en) * | 1997-12-13 | 1999-10-12 | Usbi Co. | Spray nozzle for applying metal-filled solventless resin coating and method |
US6149076A (en) * | 1998-08-05 | 2000-11-21 | Nordson Corporation | Dispensing apparatus having nozzle for controlling heated liquid discharge with unheated pressurized air |
-
2000
- 2000-03-27 WO PCT/JP2000/001853 patent/WO2000058017A1/ja not_active Application Discontinuation
- 2000-03-27 EP EP00911371A patent/EP1181984A4/en not_active Withdrawn
- 2000-03-27 US US09/890,380 patent/US6745948B1/en not_active Expired - Fee Related
- 2000-03-27 AU AU33285/00A patent/AU3328500A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61200869A (ja) | 1985-03-01 | 1986-09-05 | ロ−ラント・オツト− | 溶融接着剤をスプレーするための装置 |
JPH03146160A (ja) * | 1989-11-01 | 1991-06-21 | Nordson Kk | ホットメルト接着剤の塗布方法及び装置 |
JP3047146U (ja) * | 1997-09-12 | 1998-03-31 | 華光造機株式会社 | 塗装ガン装置 |
JP3048747U (ja) * | 1997-11-07 | 1998-05-22 | 啓臣 桑原 | 塗装ガン装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1181984A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1181984A4 (en) | 2004-12-22 |
AU3328500A (en) | 2000-10-16 |
EP1181984A1 (en) | 2002-02-27 |
US6745948B1 (en) | 2004-06-08 |
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