WO2005105318A1 - Revetement adhesif forme par pulverisation a charge electrostatique - Google Patents

Revetement adhesif forme par pulverisation a charge electrostatique Download PDF

Info

Publication number
WO2005105318A1
WO2005105318A1 PCT/CN2004/000435 CN2004000435W WO2005105318A1 WO 2005105318 A1 WO2005105318 A1 WO 2005105318A1 CN 2004000435 W CN2004000435 W CN 2004000435W WO 2005105318 A1 WO2005105318 A1 WO 2005105318A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal plate
powder
coated
nozzle
voltage
Prior art date
Application number
PCT/CN2004/000435
Other languages
English (en)
Chinese (zh)
Inventor
Jakov Makover
Bar Cochva Mardlx
Yaacov Sadeh
Original Assignee
Orisol Asia Ltd.
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 Orisol Asia Ltd. filed Critical Orisol Asia Ltd.
Priority to PCT/CN2004/000435 priority Critical patent/WO2005105318A1/fr
Publication of WO2005105318A1 publication Critical patent/WO2005105318A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/045—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field on non-conductive substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/087—Arrangements of electrodes, e.g. of charging, shielding, collecting electrodes

Definitions

  • the present invention relates to a method and apparatus for spraying hot-melt adhesive onto a desired non-metallic surface, and utilizes a charged adhesive powder sprayed from a powder spray gun.
  • the traditional method of applying hot-melt adhesive to a surface is to heat the hot-melt adhesive to make the adhesive into a liquid state, and then spray the liquid-state adhesive onto a desired surface with a spray gun.
  • the present invention overcomes the shortcomings of the traditional method, and can use adhesive particles that spray cold-type powder, without the need to heat the adhesive in advance.
  • Each charged particle and the metal plate are connected to a high voltage potential to act as an accelerator for each charged particle.
  • the position, direction, and voltage of each metal plate can be manipulated to guide the powder beam at will.
  • a method for spraying a powder on a geometric surface wherein the powder is pushed out of a gas pressure tank into a narrow nozzle, and when moving through a spray head nozzle
  • the powder has an electrostatic charge
  • the spray head nozzle with a metal plate is connected to a positive DC high voltage potential
  • a negative potential is connected to the metal plate located in the spray direction
  • each powder particle is accelerated to move to the negative potential metal plate
  • the geometric surface is located in an electrostatic field formed by each metal plate, and is impacted by each colliding powder particle.
  • Each powder particle adheres to the geometric surface due to the heat generated by the collision.
  • a device for implementing a powder spraying method on a geometric surface including: a gas pressure tank; a tube and a nozzle for pushing out the powder, wherein the nozzle is connected to The first metal plate, the nozzle and the first metal plate are both connected to a DC high voltage positive potential, so that each powder particle has a positive charge; a second metal plate, which is connected to a high voltage negative potential, and is located on the nozzle Next, in order to form a high-intensity electrostatic field between the first metal plate and the second metal plate, so that the sprayed powder is accelerated in a direction toward the second metal plate; and a surface to be coated, which It is located between the first metal plate and the second metal plate, so that the sprayed powder impacts the surface to be coated with a high-speed impact.
  • Fig. 1 is a schematic diagram of a basic configuration of a first embodiment of the present invention.
  • Fig. 2 is a schematic diagram of a second embodiment of the present invention.
  • Fig. 3 is a schematic diagram of a third embodiment of the present invention.
  • a powder spray head 2 is connected to a powder tank (: powder tank) 1 filled with an adhesive powder by a pipe 4.
  • the powder tank 1 is The air pump 9 is pressurized and is in a high-pressure state. At this time, the powder is pushed out of the powder tank 1 and enters the spray head 2.
  • the spray head 2 is connected to a positive potential of the high-voltage source 3, and the voltage charges the powder particles through the spray head 2 with a positive charge. It is worth noting that the powder may consist of dry cohesive particles.
  • the surface 5 must have the powder acting on it and be placed under the spray gun.
  • the first metal plate 7 is connected to a positive potential of the high-voltage source 3.
  • the second metal plate 6 is located below the surface 5.
  • the second metal plate 6 is connected to the negative potential of the high-voltage source 3.
  • FIG. 2 depicts a synthesis of the method and device described in FIG. 1.
  • each metal plate 61, 62, 63, 64 surrounds the surface 5.
  • Each of the metal plates 61, 62, 63, 64 is connected to a high-voltage potential provided by a high-voltage electrode, respectively.
  • Each electrode is connected to a high-voltage distributor 10, and the high-voltage distributor 10 can selectively connect the metal plates 61, 62, 63, and 64 to the high voltage at different periods and have different voltage levels. Therefore, the electrostatic field formed between each metal plate 61, 62, 63, 64 and the spray head 2 can be changed with time and shape by using the distributor (voltage generator) 10. As a result, the acceleration path of each powder particle, which is accelerated from the nozzle of the spray head 2, can be guided and controlled at will by the distributor (voltage generator) 10, and the distributor 10 can be further controlled by a microprocessor 14 Controlled.
  • the pressure level is provided and can be stored as an arithmetic program on any computer data storage medium such as a magnetic disk and read out by a data device 12.
  • the data device 12 may be a disk reader and is connected to a microprocessor 14.
  • the microprocessor 14 can be controlled by an operator and controlled by a control unit 16 composed of a data input device.
  • the data input device is, for example, a keyboard
  • the display device is, for example, a computer monitor.
  • Figure 3 depicts another embodiment of the invention.
  • the three-dimensional surface 5 (which can be any geometric shape) itself is used as a board, and the board is connected to the -V potential. It is worth noting that the three-dimensional surface to be coated 5 may be the sole of a shoe.
  • the surface 5 is first coated with a conductive layer. This coating is usually made from a variety of commercially available conductive sprayers.
  • the -V potential of the high voltage source 3 is directly connected to this surface 5. Therefore, a static electric field is formed directly between the surface 5 and the first metal plate 7, and the first metal plate 7 is connected to the spray head 2.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Abstract

La présente invention a trait à un procédé et un appareil pour la pulvérisation d'un flux chaud sur une surface non métallique, utilisant une poudre à charge électrostatique à partir d'un pistolet. Un panneau métallique relié au pôle positif de la source de tension de courant continu est disposé à l'arrière de la surface à revêtir. Un champ électrostatique établi entre le panneau métallique et un autre panneau métallique relié au pôle négatif de la source attire la poudre pour son contact avec la surface non métallique, permettant ainsi la formation d'un revêtement sur la surface non métallique. L'impact de la poudre produit de la chaleur qui entraîne la fusion du flux chaud le faisant passer dans un état activé.
PCT/CN2004/000435 2004-04-30 2004-04-30 Revetement adhesif forme par pulverisation a charge electrostatique WO2005105318A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2004/000435 WO2005105318A1 (fr) 2004-04-30 2004-04-30 Revetement adhesif forme par pulverisation a charge electrostatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2004/000435 WO2005105318A1 (fr) 2004-04-30 2004-04-30 Revetement adhesif forme par pulverisation a charge electrostatique

Publications (1)

Publication Number Publication Date
WO2005105318A1 true WO2005105318A1 (fr) 2005-11-10

Family

ID=35241482

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2004/000435 WO2005105318A1 (fr) 2004-04-30 2004-04-30 Revetement adhesif forme par pulverisation a charge electrostatique

Country Status (1)

Country Link
WO (1) WO2005105318A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008116374A1 (fr) * 2007-03-23 2008-10-02 Orisol Asia Ltd. Procédé de pulvérisation et appareil permettant de pulvériser une surface géométrique avec une poudre adhésive thermofusible

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258073A (en) * 1989-09-28 1993-11-02 Precision Tool, Ltd. Method for preventing deposition on portions of workpieces during continuous spray coating
CN1102142A (zh) * 1993-04-08 1995-05-03 诺德森公司 带有动态负载线控制的电源的喷射枪装置
CN1219894A (zh) * 1996-04-11 1999-06-16 Lcs国际有限公司 电绝缘或弱导电材料工件的上色方法和装置及其所用电极

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258073A (en) * 1989-09-28 1993-11-02 Precision Tool, Ltd. Method for preventing deposition on portions of workpieces during continuous spray coating
CN1102142A (zh) * 1993-04-08 1995-05-03 诺德森公司 带有动态负载线控制的电源的喷射枪装置
CN1219894A (zh) * 1996-04-11 1999-06-16 Lcs国际有限公司 电绝缘或弱导电材料工件的上色方法和装置及其所用电极

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008116374A1 (fr) * 2007-03-23 2008-10-02 Orisol Asia Ltd. Procédé de pulvérisation et appareil permettant de pulvériser une surface géométrique avec une poudre adhésive thermofusible

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