EP0190576B1 - Verfahren und Vorrichtung zum Imprägnieren von Baustoffen durch Bespritzen - Google Patents

Verfahren und Vorrichtung zum Imprägnieren von Baustoffen durch Bespritzen Download PDF

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Publication number
EP0190576B1
EP0190576B1 EP8686100533A EP86100533A EP0190576B1 EP 0190576 B1 EP0190576 B1 EP 0190576B1 EP 8686100533 A EP8686100533 A EP 8686100533A EP 86100533 A EP86100533 A EP 86100533A EP 0190576 B1 EP0190576 B1 EP 0190576B1
Authority
EP
European Patent Office
Prior art keywords
treatment liquid
nozzles
booth
tanks
hose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP8686100533A
Other languages
English (en)
French (fr)
Other versions
EP0190576A3 (de
EP0190576A2 (de
Inventor
Eric Corneel Mahieu
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.)
STAVELSE Metaalbouw pvba
Original Assignee
STAVELSE Metaalbouw pvba
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
Priority claimed from BE1/011413A external-priority patent/BE903989R/nl
Application filed by STAVELSE Metaalbouw pvba filed Critical STAVELSE Metaalbouw pvba
Priority to AT8686100533T priority Critical patent/ATE46461T1/de
Publication of EP0190576A2 publication Critical patent/EP0190576A2/de
Publication of EP0190576A3 publication Critical patent/EP0190576A3/de
Application granted granted Critical
Publication of EP0190576B1 publication Critical patent/EP0190576B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/0228—Spraying apparatus, e.g. tunnels

Definitions

  • submersion injecting, impregnation, expulsion of the sap
  • techniques which protect the building elements by means of special treatment liquids.
  • Submersion is a much applied technique, based on impregnation, which offers good results.
  • the efficiency of the submersion technique is not very high: the necessary amount of liquid is very large, this large amount is subject to ageing processes because the product isn't undergoing enough renewal, a lot of space is needed when it concerns an automatic transit- system, the vaporization above the surface of the open submersion basin harms the quality of the treatment liquid, is hurtful for the health of people in the proximity of the basin and increases the fire- and explosion-risk.
  • a second technique based on impregnation is the one by which the building materials are placed into a closeable booth. Spread over the innerwalls of the booth, there are fixed nozzles which are directed inwardly.
  • These known spraying apparatus are based on a method by which the elements are surrounded by a dense cloud of drops of the treatment liquid. In this way an effect similar to the effect obtained by submersion in a basin with treatment liquid, is obtained: not only the surfaces turned to the nozzles, but all surfaces and corners of the elements are steeped with the treatment liquid.
  • this closed boot is an economical alternative for the open submersion basins.
  • the method in accordance with the invention for treating building materials, all kinds of woodwork and other pieces out of wood or other materials by means of the impregnation technique carried out by alternating spraying a dense cloud of drops of the treatment liquid on the materials is characterized by intervals of spraying an excess of treatment liquid with intervals when no spraying takes place.
  • the treatment liquid gets time to impregnate in the elements, and the excess of treatment liquid gets time to run down from the surfaces.
  • the treatment liquid which lands on the elements during the following spraying period finds under itself fairly dry surfaces on which no layer of treatment liquid is to be detected,.so that the impregnation can act again.
  • This method of successive impregnation waves, caused by surrounding discontinuously with a dense cloud of drops of the treatment liquid results in a bigger impregnation depth of a better protection of the elements.
  • the method in accordance with the invention can be carried out by the current spraying devices with fixed nozzles spread over the innerwalls of the booth, by activating with intervals the pump or pumps which supply the nozzles with treatment liquid.
  • US-A-3001504 discloses a spraying apparatus comprising a closeable booth, nozzles for dispersing a treatment or coating liquid mounted on a frame which is moveable within the booth and a system of containers, compressors and supply-tubes for supplying the nozzles with a treatment or coating liquid.
  • the spraying apparatus in accordance with the invention based on the method in accordance with the invention, is intended to remedy the higher mentioned problems.
  • the spraying apparatus in accordance with the invention allows to treat the elements with all existing treatment liquids, thus even those treatment liquids with volatile components with a low inflaming temperature or with pigments and resinous components. This means that the treatment liquid has a certain colour and gives this colour along with the materials.
  • the improvements even allow to use several colours by turns with one spraying apparatus.
  • the spraying apparatus in accordance with the invention for treating building materials, all kinds of woodwork and other pieces out of wood or other materials by means of the impregnation technique by spraying an excess of the treatment liquid on the materials consisting of a closeable booth a frame movable to and fro within the booth and carrying nozzles for dispersing the treatment liquid and a system of tanks, pumps, taps and conduits for supplying the nozzles is characterized in that the frame is provided with two series of nozzles each mounted on a separate supply-tube which are both mounted on the frame, of which the first series of nozzles are directed to the middle of the booth and which can be supplied with treatment liquuid or a solvent; and of which the second series of nozzles are directed to the outerwalls of the booth and which can be supplied with a solvent.
  • the spraying apparatus in accordance with a further embodiment of the invention is characterized by the connection conduits which link up the different tanks, comprising solvent and treatment liquid, mutually and which allow the liquid to be transferred in a specific direction.
  • Booth (1) (Fig. 1), made of resistant material, is provided on its both sides with a door (4), this allows the elements, to be treated, to be brought in n on one side of the booth (1), and the treated elements to be taken out on the other side.
  • the described case of the booth (1) has the shape of a rectangular parallelepiped. It is also possible to provide the booth (1) with only one door (4).
  • the system (2) of tanks, pumps, conduits and steering valves is set up. Further, a steering panel (3) is provided.
  • a frame (5) is provided within the booth (1), frame (5) which is hung up to a waggon (6) which is hung up on four wheels (7).
  • These wheels (7) rest two by two on profiles (8), fixed on the walls over the length of the booth (1) (also Fig. 4).
  • profiles (8) runs an endless chain (9), which is set into.motion by an electromotor (10), placed outside the booth (1), by way of a transmission belt (11).
  • the frame (5) forms within the booth (1) an inscribed rectangle.
  • a tube (14) is provided, which supplies the nozzles (13), which are directed inwardly.
  • a second tube (49) is provided on the frame (5), which supplies the second series of nozzles (65) which are directed to the outerwalls and to the chain (9).
  • connection-hook (52) is mounted on both sides of one or more links of the chains (9).
  • a carrierbar (53) is mounted, on which sits a roller (54).
  • This roller (54) is found between the four sides of the frame (55), mounted on frame (5).
  • This frame (55) allows the roller (54) to pass over the difference in height between the upper side (56) and the lower side (57) of the chain (9).
  • This roller (54) takes along the frame (55), and thus the frame (5), during its movement to and fro on the chain (9).
  • Such a chain (9) is provided on both sides of the booth (1), so that the carrierbar (53) connects both chains (9) and on both sides of the frame (5) a frame (55), in which a roller (54) is found, is mounted, so that the frame (5) is pulled forward symmetrically by means of both frames (55). Possibly only one frame (55) can be provided in the middle of the frame (5). It suffices then to place one chain (9) in the middle, against the ceiling of booth (1).
  • the chain (9) runs around chain-wheels (58). On the spindle of chain-wheel (58), a second chain-wheel (59), driven by a chain (60) out of the main spindle (61) with chain-wheel (62), is mounted.
  • the main spindle (61) runs through the wall of the booth (1) and is driven on his turn by means of a transmission belt (11) out of the electromotor (10), placed outside the booth (1).
  • Fig. 4 further shows the profiles (8) on which the wheels (7) of the small waggon (6) run.
  • hoses (17 and 50) which are windable on two or more auto-rewinding hose reels (resp. 16 and 51).
  • Such an auto- rewinding hose reel (16 and 51) consist of a fixed axial tube (resp 15 and 66) functionning as a spindle around which the hose reel (res. 16 and 51) rotates; and of a springsystem, worked in within the hose reel (16 and 51), which makes the hose (resp. 17 and 50)-being rewinded automatically when the distance between the extremity of the hose (17 or 50) and the hose reel (16 or 51) becomes smaller.
  • the extremity of the hose (17 or 50) acts respectively as the discharge or the supply.
  • These hose reels (16 or 51) can be mounted on the frame (5) or the waggon (6).
  • the axial pipes (resp. 15 and 66) act then as the discharge of the hoses (resp. 17 and 50) and thus supply to the tubes (14 and 49) on the frame.
  • the extremities of the hoses (resp. 17 and 50) actthen asthe supply or receive solvent or treatment liquid from the pumps.
  • the hose reels (16 and 51) can also be mounted in the booth (1), as represented on Figure 2 where both hose reels (16 and 51) are worked into the ceiling of the booth (1), the axial tubes (resp. 15 and 66) actthen as supply, the extremities of the hoses (resp. 17 and 50) are then the discharge or supply to the tubes (14 and 49) on the frame (5).
  • the springsystem in the hose reels (16 and 51) allows the hoses to be unrolled when the frame (5) moves away from the hose reels (16 and 51).
  • the springtension is in such a way that both hoses (resp. 17 and 50) are rewound on the hose reels (rssp. 16 and 51) under the reverse movement. This system prevents the hoses (17 and 50) to fling about within the booth (1).
  • the first hose (17) is connected only with the first tube (14) with the nozzles (13) which are directed inwardly. This first hose (17) supplies only treatment liquid.
  • the second hose (50) is connected with both tubes (14 and 49) and supplies only solvent. Both hoses (17 and 50) are connected with their respective tubes (14 and 49) by means of repercussion-valves (68).
  • a grating (12) is placed above the gutter (29), which allows the to be treated elements to be placed in the booth (1) or to be driven in or out the booth (1) before and after the treatment, hung up on one or more special carts.
  • the booth (1) is further provided with one or more ventilators (28) which draw off the developed vapours and blow in fresh air when the treatment or cleaning process is finished.
  • the ventilators (28) are activated each time one of the doors (4) is opened, for safety reasons.
  • the system (2) (Fig. 1) of tanks, pumps and conduits (Fig. 3), which supplies to the axial tubes (15 and 66) (Fig. 2), consists substantially of at least one tank (21) for the treatment liquid, a tank (22) for polluted solvent and a tank (23) for clean solvent; of a pump (24) for the treatment liquid and a pump (25) for the solvent, polluted or clean; and of a number of connection conduits and a number of steering valves.
  • polluted solvent indicates that solvent which is already mixed with an amount of treatment liquid, as it has already served several times for cleaning the booth, the nozzles and the conduits which are in common for solvent and treatment liquid.
  • clean solvent indicates that solvent which isn't mixed with treatment liquid.
  • a connection conduit (31) links both tanks (22 and 23) with a first steering valve (32) which is linked with a second steering valve (34) via connection conduit (33), which leads the liquid through pump (25).
  • Steering valve (34) supplies in one position to the axial tube (66) Fig. 2) via conduit (41) and in the other position to a third steering valve (35) via a connection conducit (36).
  • Steering valve (35) supplies in one position to tank (22) via a connection conduit (37) and in the other position to tank (21) via a connection conduit (38).
  • the possible flow- directions in these connection conduits (31, 33, 36, 37, 38) and conduit (41) are indicated with an arrow.
  • Conduit (41) leads successively through a manometer; a tap, a filter, a tap and a manometer; indicated on Figure 3 with number 39.
  • the connection conduit (63) links tank (21) via pump (24) with a steering valve (42) which supplies in one position back to tank (21) via connection conduit (64) and in the other position to conduit (44) connected with axial tube (15) Fig. 2).
  • Conduit (44) leads successively through a manometer, a tap, a filter, a tap and a manometer; indicated on Figure 3 under number 40.
  • a drainage conduit (30) On the other side of the tanks (21, 22 and 23) a drainage conduit (30) (Fig.
  • the polluted solvent dilutes the major part of the remaining treatment liquid in booth (1), and returns via drain conduit (30), via steering valve (43) in position A and steering valve (45) in position B to its own tank (22). After that, the same is done with clean solvent with steering valves (32, 34, 43 and 45) all in position A.
  • the connection conduits allow the solvent to be transferred.
  • treatment liquid under concentrated form must be added and this concentrated liquid must be diluted with polluted solvent.
  • pump (25) and steering valves (32 and 34) in position B and steering valve (35) in position A the polluted solvent is pumped from tank (22) to tank (21).
  • tank (22) can be replenished with clean solvent by means of pump (25) and steering valve (32) in position A and steering valves (34 and 35) in position B.
  • the levels of tanks (21, 22 or 23) can be read visually, by means of a float or a gauge glass, or can be continuously registrated by electrical means.
  • the steering valves can be hand operated or operated full automatically by steering panel (3).
  • This steering panel (3) steers, on the basis of the chosen program: treatment of elements or cleaning the booth (1) or other procedures, the steering valves, pumps (24 and 25), the electromotor (10) and ventilator (28).
  • the program for treating the elements can for example consist of:
  • each part of this program can be programmed in advance on steering panel (3) which watches the levels in tanks (21, 22 and 23).
  • the program continuously controls if the steering valves are in the right position, so that the liquid returning from the booth (1) always returns to its own tank (21, 22 or 23). This protection is imperative to avoid that the treatment liquid should be made useless by adding wrongly an excess of solvent.
  • more than two tanks (22,23) can be provided for the solvent to divide it in more than two grades of pollution.
  • the solvent can be transferred to a tank of higher pollution.
  • two or more tanks (21) must be provided and for each treatment liquid a separate hose reel (16), with a hose (17), which supplies to tube (14), via a repercusion valve (68), a separate pump (24), steering valve (42), connection conduits (63 and 64) and conduit (44), with a system (40) of taps, filters and manometers, must be provided.
  • a repercusion valve (68) a separate pump
  • steering valve (42) steering valve
  • connection conduits (63 and 64) and conduit (44) with a system (40) of taps, filters and manometers
  • the frame (5) can possibly be provided with a separate tube (14) with nozzles (13) for each colour, in order to separate the different colours completely.
  • the treatment liquid which stands still between a pump (24) and a repercussion valve (68) in a conduit (44) and a hose (17) cannot harden as everything is airtight.
  • the spraying apparatus in accordance with the invention with the frame (5) movable to and fro and the continuous spraying nozzles (13) combines the advantages of method in accordance with the invention, viz. surrounding the elements discontinuously with a dense cloud of treatment liquid drops, with the advantages which the limited number of nozzles (13) for the treatment liquid entails.
  • the booth (1) Due to the second series of nozzles (65) and the supply of solvent via hose (50) to both tubes (14 and 49) or to both series of nozzles (13 and 65), the booth (1) is perfectly cleanable inside. Solvent and treatment liquid are supplied totally separated, except for the tube (14) and nozzles (13).
  • the possibility to bring the elements in or out of the booth (1) by means of carts or racks allows to use these carts or racks as stockage before or after the treatment and for the further finishing. Endless stacking up and unloading and the labour involved in doing so, is avoided in this way.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (10)

1. Verfahren zum Behandeln von Baumaterialien, allerarten von Holzkonstruktionen, und anderer Teile aus Holz oder anderen Materialien mittels einer Imprägniertechnik, bei der eine dichte Wolke aus Tropfen der Behandlungsflüssigkeit auf die Materialien aufgesprüht wird, dadurch gekennzeichnet, daß Intervalle, während denen ein Überschuß von Behandlungsflüssigkeit aufgesprüht wird, mit Intervallen abwechseln, während denen keine Behandlungsflüssigkeit aufgesprüht wird.
2. Sprühvorrichtung zum Behandeln von baumaterialien, aller Arten von Holzkonstruktionen, und anderer Teile aus Holz oder anderen Materialien mittels einer Imprägniertechnik, bei der ein Überschuß von Behandlungsflüssigkeit auf die Materialien aufgesprüht wird, aus einer verschließbaren Kabine (1), einem Rahmen (5), der innerhalb der Kabine (1) hin- und herbewegt werden kann und Düsen (15 und 65) trägt, um die Behandlungsflüssigkeit zu dispergieren, und aus einem System (2) von Tanks, Pumpen, Hähnen und Leitungen zur Versorgung der Düsen (13 und 65), dadurch gekennzeichnet, daß der Rahmen (5) mit zwei Gruppen von Düsen (13 und 25) versehen ist, die auf getrennten Versorgungsrohren (14 bzw. 49) angebracht sind, die beide auf dem Rahmen (5) befestigt sind, wobei die erste Gruppe von Düsen (13) zu der Mitte der Kabine (1) hin gerichtet ist und mit Behandlungsflüssigkeit oder einem Lösungsmittel versorgt werden kann, und die zweite Gruppe von Düsen (65) zu den Außenwänden der Kabine (1) hin gerichtet ist und mit einem Lösungsmittel versorgt werden kann.
3. Sprühvorrichtung gemäß Anspruch 2, bei der das Tanksystem (2) aus einem oder mehreren Tanks (21, 22, 23) für jede Behandlungsflüssigkeit von verschiedener Farbe, und aus zwei oder mehreren Tanks für Lösungsmittel von verschiedenem Reinheitsgrad besteht, dadurch gekennzeichnet, daß Verbindungsleitungen die verschiedenen Tanks über eine oder mehrere Pumpen in einer solchen Weise verbinden, daß es nach Wunsch möglich ist, Lösungsmittel von einem bestimmten Reinheitsgrad in einen Tank umzufüllen, der Lösungsmittel von einem niedrigeren Reinheitsgrad enthalt, oder in einen Tank umzufüllen, der Behandlungsflüssigkeit enthält.
4. Sprüvorrichtung gemäß Anspruch 3, bei der der Boden der verschließbaren Kabine (1) mit einer Abflußrinne (29) versehen ist, die zu einer oder mehreren Abflußleitungen (30) führt, dadurch gekennzeichnet, daß die Abflußleitungen (30) mit den Tanks (21, 22, 23) über ein System von Steuerventilen (43, 45) verbunden sind, über die einer oder mehrere der Tanks (21, 22, 23) für die Entleerung aus den Abflußleitungen (30) ausgewählt werden können.
5. Sprühvorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, daß jedes Versorgungsrohr (14 und 49) mittels eines Schlauchs (17 oder 50) versorgt wird, der auf eine Schlauchtrommel (16 bzw. 51) aufgewickelt ist, die in einer solchen Weise mit einem Federsystem versehen ist, daß der Schlauch (17 bzw. 50) sich frei abwickeln kann, und wieder aufgewickelt wird, wenn der Abstand zwischen beiden Enden des Schlauchs infolge der Bewegung des Rahmens (5), der die Düsen (13 und 65) trägt, kleiner wird.
6. Sprühvorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, daß der erste Schlauch (17) zwecks Zuführung von Versorgungsflüssigkeit mit dem Rohr (14) und der Pumpe (24) verbunden ist.
7. Sprühvorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, daß der zweite Schlauch (50) zwecks Zuführung eines Lösungsmittels mit beiden Rohren (14 und 49) und mit der Pumpe (25) verbunden ist.
8. Sprühvorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, daß für jede Behandlungsflüssigkeit von eigener Farbe ein Schlauch (17) vorgesehen ist, der über eine Pumpe mit einem der mit Behandlungsflüssigkeit gefüllten Tanks verbunden ist, und der das Rohr (14) und die Düsen (13) auf dem beweglichen Rahmen (5) versorgt.
9. Sprühvorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, daß die Schläuche (17 und 50) über ein Rückschlagventil (68) mit den Rohren (14 und 49) verbunden sind.
10. Sprühvorrichtung gemäß einem der Ansprüche 2 bis 9, dadurch gekennzeichnet, daß die Position der Steuerventile, die Tankniveaus, der Elektromotor (10), die Pumpen und der Ventilator (28) automatisch gesteuert und überwacht .werden.
EP8686100533A 1985-01-21 1986-01-17 Verfahren und Vorrichtung zum Imprägnieren von Baustoffen durch Bespritzen Expired EP0190576B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8686100533T ATE46461T1 (de) 1985-01-21 1986-01-17 Verfahren und vorrichtung zum impraegnieren von baustoffen durch bespritzen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE901536 1985-01-21
BE901536 1985-01-21
BE1/011413A BE903989R (nl) 1985-01-21 1986-01-07 Sproei-inrichting voor het behandelen van bouwmaterialen, stukken in hout of andere stoffen onder gelijk welke vorm.
BE1011413 1986-01-07

Publications (3)

Publication Number Publication Date
EP0190576A2 EP0190576A2 (de) 1986-08-13
EP0190576A3 EP0190576A3 (de) 1987-01-28
EP0190576B1 true EP0190576B1 (de) 1989-09-20

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Application Number Title Priority Date Filing Date
EP8686100533A Expired EP0190576B1 (de) 1985-01-21 1986-01-17 Verfahren und Vorrichtung zum Imprägnieren von Baustoffen durch Bespritzen

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EP (1) EP0190576B1 (de)
DE (1) DE3665677D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838948A1 (de) * 1988-11-17 1990-05-23 Columbus System Patent Ag Kammer fuer das elektrostatische pulverbeschichten
IT1257689B (it) * 1992-11-20 1996-02-01 Impianto di verniciatura a polveri con cabina a sezione variabile
FR2838369B1 (fr) * 2002-04-10 2004-07-02 Lapeyre Procede de traitement de matieres lignocellulosiques, notamment du bois ainsi qu'un materiau obtenu par ce procede
FR2909582B1 (fr) * 2006-12-08 2012-07-27 A2C Procede pour la fabrication d'au moins un assemblage de pieces en bois

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829582A (en) * 1954-01-18 1958-04-08 Lockheed Aircraft Corp Apparatus useful in painting aircraft
DE1216743B (de) * 1955-12-23 1966-05-12 Daimler Benz Ag Vorrichtung zum elektrostatischen UEberziehen von grossen Gegenstaenden
US3424129A (en) * 1967-04-20 1969-01-28 Devilbiss Co Spray booth
DE2827891C3 (de) * 1978-06-24 1981-11-05 Yasui Sangyo Co., Ltd., Fujinomiya, Shizuoka Vorrichtung zum Versprühen von Flüssigkeit
US4338958A (en) * 1980-07-10 1982-07-13 Junji Fujita Spray booth assembly for washing or chemically treating objects of desired kind

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Publication number Publication date
EP0190576A3 (de) 1987-01-28
DE3665677D1 (en) 1989-10-26
EP0190576A2 (de) 1986-08-13

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