WO1997037770A1 - Procede de peinture de pieces en materiau dielectrique ou faiblement conducteur, electrode pour installation de peinture par voie electrostatique de pieces en materiau dielectrique ou faiblement conducteur et installation de peinture - Google Patents
Procede de peinture de pieces en materiau dielectrique ou faiblement conducteur, electrode pour installation de peinture par voie electrostatique de pieces en materiau dielectrique ou faiblement conducteur et installation de peinture Download PDFInfo
- Publication number
- WO1997037770A1 WO1997037770A1 PCT/FR1996/000553 FR9600553W WO9737770A1 WO 1997037770 A1 WO1997037770 A1 WO 1997037770A1 FR 9600553 W FR9600553 W FR 9600553W WO 9737770 A1 WO9737770 A1 WO 9737770A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- paint
- painting
- painted
- dielectric
- 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
- 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
-
- 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
Definitions
- the present invention relates to a method of painting parts of dielectric or weakly conductive material, an electrode for installation of electrostatic painting of parts of dielectric or weakly conductive material and an installation of painting of parts of dielectric or weakly conductive material.
- the present invention is particularly applicable to the wood and furniture industries.
- thermoforming This method cannot fully cover a panel at one time.
- the edges of the face face leave appear the thermoformed film.
- the choice of colors is also very limited here.
- the present invention intends to remedy these drawbacks by proposing a painting process on parts made of dielectric or poorly conductive material and in particular wood, an electrode and a painting installation on these materials using said process.
- the method described in the present invention is a method of painting parts made of dielectric or weakly conductive material in which is used a means of spraying paint comprising a chamber connected on the one hand with a paint outlet orifice and d on the other hand with a supply of paint.
- This process is essentially characterized in that it consists in mechanically and electrically connecting at least one electrode to the part to be painted, in creating an electrostatic field between the electrode and the paint spraying means by applying a difference electrical potential between the electrode and another electrode housed in the chamber of the projection means, to propel the paint from the reserve, towards the paint outlet orifice by passing through the chamber, to electrically charge this paint and to project this paint towards the part (16) to be painted.
- a solid paint in powder form is used.
- a powder paint based on poly ⁇ ester is used.
- the painting process consists in introducing the electrode into the room. This arrangement makes it possible to paint all of the external surfaces of the room.
- the painting process consists in affixing the electrode on at least one of the external faces of the part to be painted. This operating mode limits the painting of the part to the faces not covered by the electrode (s).
- the electrode according to the invention for installation for electrostatic painting of parts made of dielectric or weakly conductive material, intended to come into contact with the part to be painted and to be connected to one of the two poles of a source of electric voltage fitted to the installation, is essentially characterized in that it comprises on its external surface at least one angular region intended coming into contact with the part to be painted, said angular region being the seat of the so-called peak electrostatic effect.
- Figure 1 schematically shows a succession of operations according to the method of the present invention.
- FIG. 2 represents a schematic view of a painting installation provided with an electrode according to the invention and intended for the implementation of the method according to the invention.
- FIG. 3 represents a sectional view of a first embodiment of the electrode according to the present invention.
- Figure 4 shows a front view of the electrode according to Figure 3.
- Figure 5 shows a sectional view of a second embodiment of the electrode according to the present invention.
- FIG. 6 represents a front view according to FIG. 5.
- FIG. 7 represents, in section, an electric field generated by an electrode according to the present invention.
- FIG. 8 shows in perspective another embodiment of an electrode according to the invention.
- FIG. 9 shows schematically, top view, a baking oven of the painting installation according to the present inven ⁇ tion.
- the process which is the subject of the present invention is applied to a particular example, that of furniture wood.
- This furniture wood can be M.D.F (medium density fiber), that is to say a wood made from citrus fruits compressed under high pressure.
- This wood can also be chipboard, and more generally any type of natural or recomposed wood used in the furniture industry.
- the part to be painted as can be seen in particular in FIG. 2, may be in the form of a polygonal contour panel, for example rectangular or square.
- Figure 1 In Figure 1 are shown a cutout and shaping 1, a hole 2, a sanding and a protection 3 of edges, a sanding 4 of the whole part, an attachment 5 of electrode, an application 6 of tension on the electrode, an application 7 of voltage on the paint, a projection 8 of paint, a low flux cooking 9, a high flux cooking 10, a cutout 11 of margins and an application 12 of ver ⁇ nis.
- the cutting and shaping 1 is of known type. It includes both the rectangle cutting, the rounding of the edges and possibly the knockout and grooving, for example. It consists in giving the piece its final shape. The other operations relate to the surface condition of this part. The wood used must preferably have a hygrometry of 8 to 12 percent. Drilling 2 consists in making a first hole in the part so that the electrode can be laid without causing the part to burst. This drilling will advantageously be blind and in the case where the part to be painted consists of a panel, will be produced so that its median axis of symmetry is perpendicular to the two large faces of the panel.
- the drilling 2 of electrodes is carried out either in an area which will then be machined, or in an area which will be eliminated by cutting margins.
- the electrode piercing 2 is then used, for example for the installation of hinges or hinges or any other mechanical elements participating in the assembly of the panels of a piece of furniture.
- the drilling is not carried out. This drilling is also not carried out if the shape of the electrode allows its insertion into force in the part and this without danger of bursting of the latter.
- the protection of the edges 3 of the panel is a characteristic operation of the present invention.
- edges of the piece of wood are sanded, for example with a grain of 400 for MDF, with a grain of 220 for the chipboard, then are covered with a blocking primer, consisting for example of wood pulp based barium or a polyurethane varnish.
- This operation therefore consists in sealing the po ⁇ res of the wood or even in filling the roughness of the wood.
- This edge protection 3 also includes a drying phase which can last a few hours. It allows the pieces of wood to then undergo heating, that is to say cooking at high temperature.
- Sanding 4 is also one of the characteristic operations of the present invention. Sanding is an action to prepare the surface which precedes the application of a product.
- Sanding removes be on the surface the fibers, impurities, traces of fat, rayu ⁇ res.
- This sanding is carried out according to the process of the present invention with a grain greater than 300 and preferably 400.
- This grain generally corresponds to a particular sanding operation, called ginning, because of the fineness of the grain used.
- This sanding is carried out on all the surfaces to be painted in the room. The fineness of the grain allows the wood fibers not to be opened in such a way that heating the wood, during cooking operations 9 and 10, does not cause significant bubbling or degassing. Thus, the surface condition of the paint is not altered. In the case of a panel, the sanding is carried out on all the faces of the latter.
- the attachment of electrode 5 consists in mechanically and therefore electrically fixing the electrode to the part to be painted.
- the electrode is introduced, preferably by force, into the hole drilled during drilling 2.
- the hooking can be carried out by pressing in or by screwing for example.
- the electrode has straight or curved projections or sharp angles.
- the electrode therefore has concave parts. This operation is the main characteristic of the invention because of the shape of the electrode which favors the appearance of a spherical or flattened electric field around the electrode when the latter is connected to a voltage source.
- the application 6 of voltage on the electrode consists in electrically connecting the electrode to a source of electric voltage.
- the practice generally prefers that this tension is zero.
- the electrode is connected by an electric cable or a metal support to said voltage source.
- the application of tension to the paint 7 is also of the con ⁇ naked type. It consists in electrically charging a solid paint powder, for example a polyester powder with a sign voltage oppo ⁇ ed to that which charges the part, said voltage being supplied by the voltage source to which the electrode is connected.
- the spraying of paint 8 is of known type and is generally carried out by an electrostatic paint spray gun. It is the propelling air, the static electricity and the electric field created between the electrode and the gun which cause the movement of the powder of paint towards the part to be painted.
- This electrostatic paint gun is connected to the voltage source and is subject to electrically charging the paint regardless of the positive or negative polarity.
- the spraying of paint is carried out by sweeping, but the powder paint deposited forms a single layer.
- Low-flow cooking 9 is carried out in the first part of an oven, the part in which the painted parts are introduced.
- the flow of hot air, which comes from the bottom of the oven is braked by mechanical protection.
- the thermal shock is limited as well as the mixing of air which could disturb the uniformity of the paint deposition. This is limited to a very short period of two to four minutes, during which the paint begins to adhere to the support.
- High flux cooking 10 is of known type. It takes place in the rest of the oven. Both types of cooking are carried out, for example, in a gas oven, but it goes without saying that any other type of oven suitable for this function can be used.
- the cutout 11 of margins makes it possible both to bring the part to the required dimensions and to eliminate the drilling 2 of the electrode.
- the application 12 of varnish is of known type, for example with water, with a cylinder, by automatic or manual spraying.
- FIG. 1 the process which is the subject of the present invention is applied to a particular example, that of furniture wood.
- other examples could have been used, for example, that of plaster, that of earthy materials, bricks, P.V.C, tiles and more generally of all slightly conductive materials.
- the shredded products may be cartons lined with aluminum foil.
- the paint can be metallized and / or realize a metallization of the part or any other surface effect, such as the seeds, hammered, structured and smooth effects.
- the method comprises a varnishing phase by applying colorless varnish drying with ultraviolet rays having a brightness varying between 25 and 100 percent, according to the choice of the user without ginning the support.
- the grammage per square meter preferably reaches 90 to 160 grams with an accuracy and homogeneity of 10 grams.
- the method comprises a phase of ver ⁇ nishing by applying a polyurethane varnish with conventional drying or a diluted wood pulp with conventional drying.
- FIG. 2 schematically represents a painting installation according to the invention.
- FIG. 2 In FIG. 2 are shown a gun 13, a part to be painted 16, an electrode 17, an electrode holder 18 and a voltage source 19, paint 20, a spray of paint 21, a compressor 45 and a tank. powder coating 46 constituting paint reserve 20.
- the gun 13 is adapted to orient the paint jet 21 electrically charged towards the part 16. It is. known type. This gun has an internal chamber formed in a projection barrel and in relation on the one hand with a paint outlet orifice provided at the end of the barrel and on the other hand with the paint reserve 46 by means of a conduit. The paint in powder form is propelled by compressed air through the chamber from the reserve 46 towards the paint outlet orifice.
- an electrode not shown, electrically connected via the electronic cascade of the gun, to the positive pole of the electric voltage source 19.
- the other pole of the voltage source 19 is electrically connected to the electrode 17 either directly or indirectly via the support 18. Between the electrode 17 and the gun electrode is therefore established an electrostatic field which can be negative or positive depending on the choice of the electronic cascade.
- the paint is electrically charged when it passes through the chamber, coming close to or in contact with the spray gun.
- the source of electrical voltage provides between its terminals a potential difference of several tens of kilovolts.
- the part to be painted 16 is in the paint spraying operation 8 of the process described in FIG. 1. It has therefore already been sanded with a grain greater than three hundred and its edges may have their blocked asperities.
- the compressor 45 injects compressed air into the pou ⁇ drage tank 46 according to known techniques in order to thin the paint contained in this tank.
- the fluidized paint is then sprayed.
- the electrode support 18 is adapted to mechanically support the electrode 17 and the part 16 and to electrically connect one of the electrical terminals of the voltage source 19 to the electrode 17.
- the electrode 17 promotes the appearance of a spherical or flattened electric field around it when it is connected to a voltage source.
- the electrode 17 is conductive, has angular regions such as for example straight or curved projections or acute angles. Thus the electrode 17 has concave parts. It is electrically connected to an electrical ground and to part 16. To this electrical ground will be connected the negative pole of the voltage source 19. It also serves as a support for part 16.
- Each projection that the electrode may include, in a normal plane on the surface of said electrode, may have a triangular or trapezoidal cross section or any other shape presenting at a distance from said surface a region of strong curvature.
- Each projection may form a pin or be elongated and develop in the latter case in a straight line on the surface of the electrode or else in a curved manner, for example in a helical circle or other curve.
- the electrode may comprise a core, the projection (s) being formed on the external surface of the core and being able to develop radially with respect to the latter.
- An electrode with core is intended to be inserted into a hole previously made in the part to be painted.
- Such an electrode when it is mechanically and electrically connected to a part in the form of a panel of polygonal outline, all the external surfaces of which are to be painted, is introduced into the panel preferably in the direction of the thickness of the latter.
- the longitudinal axis of the electrode core is therefore perpendicular to the two large faces of the panel.
- the core may have a polygonal cross section but preferably the cross section of this core is circular.
- This core will be cylindrical or else conical in shape.
- the protrusions of an electrode with a cylindrical or conical core may each develop along one of the generatrices of the external cylindrical or conical surface of the core or else in a curved manner on this external surface, for example in a helix, in a circle and the like.
- the protrusions of an electrode with a cylindrical or conical core may also consist of pins which will develop radially with respect to the core.
- Figure 3 shows a sectional view of a preferred embodiment of the electrode, object of the present invention.
- FIG. 4 represents a front view of the same embodiment of the electrode.
- This electrode consisting of a cylindrical core is provided with an external thread and at least one longitudinal groove extending along a generatrix of the core through the thread.
- an electrode 17 with a cylindrical core comprising an external thread 22, 23, 24, 25, at least one groove, a recess 28, an internal thread 29 , a front face 30 and a rod 32.
- the electrode is provided with two grooves 26, 27, diametrically oppo ⁇ ed.
- the electrode may be equipped with a larger number of grooves which preferably will be spaced regularly from each other.
- the length of the electrode is adapted to the thickness of the product to be painted.
- the part 16 has been pierced with a hole whose diameter is substantially equal to the diameter at the bottom of the thread of the external threads 22, 23, 24 and 25 and whose depth is substantially equal to or greater than the re-entrant length of the electrode in the panel.
- the external thread 22, 23, 24, 25 and the two grooves 26, 27 are formed in a single thread whose pitch for example is of the order of a millimeter.
- Each piece of thread 22, 23, 24 and 25 is therefore substantially equal but less than half a step away from a helix stopping at grooves 26 and 27.
- the electrode 17 therefore has curved and helical projections and acute angles.
- the recess 28 of cylindrical shape passes right through the electrode along the longitudinal median axis of the core of this latter.
- the electrode as shown in FIG. 3 does not have a shoulder but as a variant, it can be equipped with a shoulder to limit penetration into the part 16.
- the internal thread 29 or internal thread is produced in the recess 28 over the entire length of the latter.
- the metal rod 32 allows the insertion of the electrode 17 into the part 16 by its geometry and the connection of electrical connectors to the electrode 17.
- the rod 32 is preferably cylindrical and has a thread at the end to engage , by this end, in screwing into the internal thread 29 of the electrode 17.
- This rod 32 will provide an electrical and mechanical connection of the electrode to the electrode support 18.
- This rod can also constitute an electrode support.
- the shape of the electrode 17 presented in FIGS. 3 and 4 is preferably inserted by screwing. Thanks to the presence of the grooves, the electrode according to this embodiment is self-tapping and its screwing in the hole carries out the tapping of the latter.
- the protrusions in the form of a net that this electrode presents penetrate completely into the material of the panel and are therefore in intimate contact with the part, which is conducive to improving both the electrical and mechanical connection with the latter.
- the insertion depth of the electrode 17 into the hole produced by drilling the part 16 is substantially greater than half the thickness of the part 16 and substantially less than said thickness.
- Figure 5 shows a sectional view of a second embodiment of the electrode, object of the present invention.
- FIG. 6 shows a front view of the electrode shown in Figure 5.
- a part 16 an electrode 17 having a core on the cylindrical surface of which are provided external longitudinal straight projections 33 separated by longitudinal recesses 34, a recess 35, a shoulder 31 and a rod 32.
- This electrode has a cylindrical core.
- the external longitudinal straight projections 33 and the recesses 34 form a prism with a polygonal base, for example in the shape of a star.
- the recess 35 passes right through the electrode and is formed sui ⁇ vant the longitudinal axis of the core of the latter.
- the shoulder 31 and the end-threaded rod 32 have the same characteristics and functions as in FIGS. 3 and 4.
- the shape of the electrode 17 presented in FIGS. 5 and 6 is preferably forced into a hole previously made in the panel.
- the electrode 17 therefore has straight projections and sharp angles.
- Other forms of electrodes conform to the spirit of the invention, such as, for example, wood screws, threaded rods, or any other element.
- An electrode may also be provided in the form of a plate of reduced thickness and of polygonal outline for example, the projections being formed on at least one of the faces of said plate.
- Such an electrode can be forcibly inserted into the wooden panel without prior drilling thereof or else be inserted in the hole provided for receiving this electrode or else be placed on one of the faces of the part.
- the projections provided for this electrode in the form of a plate may be pins of the longiform bosses and the like.
- the protrusions will always each have a cross section of triangular shape, trapezoidal shape and other shapes capable of being the seat of an electrostatic effect called peak.
- the plate may form a succession of protrusions and hollows, ain ⁇ if this plate will be wavy.
- the corrugations of the plate may be triangular in shape.
- the large faces of the corrugations may be smooth or else have projections like those previously described.
- FIG. 7 represents, in section, an electric field generated by a device which is the subject of the present invention.
- lines of equipotential 36, 37 and 38 generated by the tensioning in air of the inserted part of the electrodes 17.
- FIG. 8 In FIG. 8 are shown an oven 39, a room inlet area 40, a room outlet area 41, a high flow heating area 42, a hot air inlet 43 provided with a protection 44.
- the oven 39 has the parts inlet zone 40 which is, for example, at one end and the parts outlet zone 41 which is, at the other end of the oven. Between these two zones lies an inter- 42.
- the first heating or baking phase is done with reduced air movement speeds compared to the following heating or baking phases so that the paint can gel before the part reaches in the region with strong air movement.
- the first heating phase is carried out in the air intake zone while the following phase is carried out in the rest of the oven, ie in zones 42 and 41. It should be noted that the entire oven volume is at uniform temperature.
- the high flux heating region 42 includes the zones 42 and 41.
- the oven is provided over its whole extent with air inlet orifices, the air inlet is effecting from below and the orifices being distributed in the zones 40, 41, and 42.
- the latter is provided with a screen 44 constituted by a removable wall placed on the bottom of the zone 40 in order to hide the air intake orifices of the latter.
- temperatures and cooking times are those recommended for the powder paints used, the wood being able, once protected on its edges and knockouts by a blocking primer, to withstand high temperatures without thermal expansion.
- the method and the device described in the present invention apply equally to the painting of pieces of agglomerated wood, compressed wood, agglomerated wood coated with polyvinyl film, for example smooth PVC or imitation of natural essence. , MDF wood raw or smooth or coated with smooth P.V.C. or imitation of natural essence, or veneer of natural essence.
- the electrode can be an element of the finished product and for this reason is not removed from the panel.
- This electrode which in this case constitutes an insert can later serve as an anchor point for the panel.
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Electrostatic Spraying Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CZ19983236A CZ287696B6 (en) | 1996-04-11 | 1996-04-11 | Coloring process of a component made of dielectric or material with low conductivity and apparatus for making the same |
AU56518/96A AU723230B2 (en) | 1996-04-11 | 1996-04-11 | Method, electrode and apparatus for electrostatically painting parts made of dielectric or low-conductivity material |
PCT/FR1996/000553 WO1997037770A1 (fr) | 1996-04-11 | 1996-04-11 | Procede de peinture de pieces en materiau dielectrique ou faiblement conducteur, electrode pour installation de peinture par voie electrostatique de pieces en materiau dielectrique ou faiblement conducteur et installation de peinture |
PL96329617A PL329617A1 (en) | 1996-04-11 | 1996-04-11 | Electrode, method of and apparatus for electrostatically applying paint coats onto dielectric or weakly conductive materials |
EA199800894A EA001315B1 (ru) | 1996-04-11 | 1996-04-11 | Способ электростатической окраски элементов из диэлектрика или материала с низкой электропроводностью, установка для окраски и электрод установки |
BR9612597A BR9612597A (pt) | 1996-04-11 | 1996-04-11 | Processo para pintar elementos const¡u¡dos de material diel-trico ou de baixa condu-Æo eletrodo para facilitar uma pintura eletrost tica para elementos constitu¡dos de material diel-trico ou de baixacondutividade e facilidade de pintura |
NZ307228A NZ307228A (en) | 1996-04-11 | 1996-04-11 | Process for painting elements made of dielectric or low conducting material, electrode for an electrostatic painting facility for elements made of dielectric or low conducting material and painting facility |
NO984722A NO984722L (no) | 1996-04-11 | 1998-10-09 | FremgangsmÕte for maling av elementer fremstilt av materialer som er dielektriske eller har lav ledningsevne, elektrode for en elektrostatisk malingsinnretning til elementer av materialer som er dielektriske eller har lav ledningsevne, og maling |
FI982201A FI982201A (fi) | 1996-04-11 | 1998-10-09 | Menetelmä, elektrodi ja laite dielektristä tai huonosti johtavasta materiaalista valmistettujen osien maalaamiseksi elektrostaattisesti |
HK99105916A HK1020902A1 (en) | 1996-04-11 | 1999-12-16 | Process for painting elements made of dielectric or low conducting material, its facility and electrode therefore |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR1996/000553 WO1997037770A1 (fr) | 1996-04-11 | 1996-04-11 | Procede de peinture de pieces en materiau dielectrique ou faiblement conducteur, electrode pour installation de peinture par voie electrostatique de pieces en materiau dielectrique ou faiblement conducteur et installation de peinture |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997037770A1 true WO1997037770A1 (fr) | 1997-10-16 |
Family
ID=9488234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/000553 WO1997037770A1 (fr) | 1996-04-11 | 1996-04-11 | Procede de peinture de pieces en materiau dielectrique ou faiblement conducteur, electrode pour installation de peinture par voie electrostatique de pieces en materiau dielectrique ou faiblement conducteur et installation de peinture |
Country Status (6)
Country | Link |
---|---|
AU (1) | AU723230B2 (fr) |
BR (1) | BR9612597A (fr) |
CZ (1) | CZ287696B6 (fr) |
EA (1) | EA001315B1 (fr) |
HK (1) | HK1020902A1 (fr) |
WO (1) | WO1997037770A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230025587A1 (en) * | 2021-07-21 | 2023-01-26 | Toyota Jidosha Kabushiki Kaisha | Painting method and painting apparatus for insulator |
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US2888362A (en) * | 1952-05-26 | 1959-05-26 | Ransburg Electro Coating Corp | Method and apparatus for electrostatically coating an article |
US3649326A (en) * | 1969-03-27 | 1972-03-14 | Brunswick Corp | Coated article and method of forming the same |
DE2517504A1 (de) * | 1975-01-17 | 1976-07-22 | Gema Ag | Verfahren zur elektrostatischen aussenbeschichtung von offenen hohlkoerpern aus elektrisch isolierendem material, insbesondere von glasflaschen |
JPS57194074A (en) * | 1981-05-27 | 1982-11-29 | Toyota Motor Corp | Electrostatic coating method of bad conductive goods |
US4637954A (en) * | 1984-08-08 | 1987-01-20 | Nippon Gakki Seizo Kabushiki Kaisha | Resin-treated woody material |
EP0253539A2 (fr) * | 1986-07-17 | 1988-01-20 | Imperial Chemical Industries Plc | Procédé de pulvérisation |
DE3724804A1 (de) * | 1987-07-27 | 1989-02-09 | Kurt Gollin Holzbearbeitung Gm | Verfahren zum beschichten von holzwerkstuecken und vorrichtung hierfuer |
JPH0471665A (ja) * | 1990-07-11 | 1992-03-06 | Eidai Co Ltd | 木質化粧板への塗装方法 |
-
1996
- 1996-04-11 BR BR9612597A patent/BR9612597A/pt not_active IP Right Cessation
- 1996-04-11 AU AU56518/96A patent/AU723230B2/en not_active Ceased
- 1996-04-11 CZ CZ19983236A patent/CZ287696B6/cs not_active IP Right Cessation
- 1996-04-11 WO PCT/FR1996/000553 patent/WO1997037770A1/fr active IP Right Grant
- 1996-04-11 EA EA199800894A patent/EA001315B1/ru not_active IP Right Cessation
-
1999
- 1999-12-16 HK HK99105916A patent/HK1020902A1/xx not_active IP Right Cessation
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US2888362A (en) * | 1952-05-26 | 1959-05-26 | Ransburg Electro Coating Corp | Method and apparatus for electrostatically coating an article |
US3649326A (en) * | 1969-03-27 | 1972-03-14 | Brunswick Corp | Coated article and method of forming the same |
DE2517504A1 (de) * | 1975-01-17 | 1976-07-22 | Gema Ag | Verfahren zur elektrostatischen aussenbeschichtung von offenen hohlkoerpern aus elektrisch isolierendem material, insbesondere von glasflaschen |
JPS57194074A (en) * | 1981-05-27 | 1982-11-29 | Toyota Motor Corp | Electrostatic coating method of bad conductive goods |
US4637954A (en) * | 1984-08-08 | 1987-01-20 | Nippon Gakki Seizo Kabushiki Kaisha | Resin-treated woody material |
EP0253539A2 (fr) * | 1986-07-17 | 1988-01-20 | Imperial Chemical Industries Plc | Procédé de pulvérisation |
DE3724804A1 (de) * | 1987-07-27 | 1989-02-09 | Kurt Gollin Holzbearbeitung Gm | Verfahren zum beschichten von holzwerkstuecken und vorrichtung hierfuer |
JPH0471665A (ja) * | 1990-07-11 | 1992-03-06 | Eidai Co Ltd | 木質化粧板への塗装方法 |
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PATENT ABSTRACTS OF JAPAN vol. 16, no. 277 (C - 954) 22 June 1992 (1992-06-22) * |
PATENT ABSTRACTS OF JAPAN vol. 7, no. 43 (C - 152) 19 February 1983 (1983-02-19) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230025587A1 (en) * | 2021-07-21 | 2023-01-26 | Toyota Jidosha Kabushiki Kaisha | Painting method and painting apparatus for insulator |
CN115672684A (zh) * | 2021-07-21 | 2023-02-03 | 丰田自动车株式会社 | 绝缘体的涂装方法及涂装装置 |
CN115672684B (zh) * | 2021-07-21 | 2024-03-08 | 丰田自动车株式会社 | 绝缘体的涂装方法及涂装装置 |
US11969750B2 (en) * | 2021-07-21 | 2024-04-30 | Toyota Jidosha Kabushiki Kaisha | Painting method and painting apparatus for insulator |
Also Published As
Publication number | Publication date |
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AU723230B2 (en) | 2000-08-24 |
EA001315B1 (ru) | 2001-02-26 |
CZ287696B6 (en) | 2001-01-17 |
BR9612597A (pt) | 1999-08-24 |
CZ323698A3 (cs) | 1999-06-16 |
HK1020902A1 (en) | 2000-05-26 |
AU5651896A (en) | 1997-10-29 |
EA199800894A1 (ru) | 1999-06-24 |
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