EP0291423A1 - Booth for coating objects with powder - Google Patents

Booth for coating objects with powder Download PDF

Info

Publication number
EP0291423A1
EP0291423A1 EP88420144A EP88420144A EP0291423A1 EP 0291423 A1 EP0291423 A1 EP 0291423A1 EP 88420144 A EP88420144 A EP 88420144A EP 88420144 A EP88420144 A EP 88420144A EP 0291423 A1 EP0291423 A1 EP 0291423A1
Authority
EP
European Patent Office
Prior art keywords
cabin
walls
powder coating
flexible sheet
coating booth
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.)
Granted
Application number
EP88420144A
Other languages
German (de)
French (fr)
Other versions
EP0291423B1 (en
Inventor
Jean-Jacques Celant
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88420144T priority Critical patent/ATE74028T1/en
Publication of EP0291423A1 publication Critical patent/EP0291423A1/en
Application granted granted Critical
Publication of EP0291423B1 publication Critical patent/EP0291423B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • B05B16/25—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations for both automatic and manual spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/32—Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed
    • 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
    • B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
    • 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
    • B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B08B17/04—Preventing deposition of fouling or of dust by using removable coverings

Definitions

  • the present invention relates to a powder coating booth, in particular electrostatic powder coating, for coating objects, in particular metallic objects.
  • the invention aims to remedy this drawback by means of a powder spraying booth which requires a time interval for the color change which is much less than that required for booths of the prior art. It relates to a powder coating booth with rigid external walls and bottom suction, these external walls being lined internally over all or part of their surface by another rigid wall permeable to air. The interval between these two walls delimits a space in which a vacuum is applied capable of causing the plating on this permeable wall of at least one flexible, consumable and waterproof sheet, capable of covering it over all or part of its surface which is outside the suction area from the bottom.
  • this electrostatic powder coating booth 1 is a booth for automatic installation of coating of objects (not shown) which are continuously scrolled, suspended from metal hooks 40 which circulate on a conveyor 3 connected to ground of the installation.
  • the cabin 1 has a generally parallelepiped shape, and is provided with several openings: - A front opening 4 and a rear opening 5, called “silhouettes” and able to give passage to the objects to be coated; - A longitudinal opening, or slot 6, made in the roof 18 of the cabin 1 and capable of delivering passage to the conveyor 3; - On each of the two large side faces 7, 8 of the cabin, two openings 9, 10 for passage of the automatic powder projectors 11, 12, and an opening 13 for passage of a manual projector (not shown).
  • the floor of the cabin is composed of an endless filtering rotating belt 14 through which a suction is applied which puts the cabin in depression with respect to the ambient atmosphere outside it.
  • This suction is achieved by a vacuum applied inside the hollow base 15 of the cabin, this base also containing the rollers 16 for supporting and advancing the endless belt 14.
  • the filter strip 14 circulates in the opposite direction to the direction F of advancement of the parts on the conveyor 3.
  • a suction ramp 17 is placed downstream of this endless belt 14 and recovers the powder which has deposited on this carpet 14.
  • the side faces 7, 8 of the cabin and its roof 18 are lined internally by a metal wall 19 pierced with numerous holes 20.
  • This double wall 19 is placed at a distance of 3 to 5 centimeters from the wall exterior 7,8,18.
  • the space 21 between the two walls is placed under vacuum relative to the interior of the cabin by means of a medium pressure turbine not shown.
  • the double perforated wall 19 is supported by spacers 22 (FIG. 4) and the lateral openings 9, 10, 13 and upper 6 of the cabin are bordered internally by a tube 23, of square section, the face 24 looking towards the interior of the cabin is constituted by a porous sintered material, such as porous bronze.
  • a vacuum greater than that prevailing in the space 21 is applied to the interior of the tubes 23 by another turbine, not shown.
  • the roof 18 of the cabin carries two rows of rollers 25, 26.
  • the large lateral faces 7 and 8 carry, at their lower part, two horizontal rows 27, 28 of rollers of the same diameters as the other rollers 25, 26.
  • the rollers 25, 26, the rollers 27, 28 are placed on the outer face of the walls 7 and 8. All of these rollers 25 to 28 can optionally be motorized, by conventional means not shown, so as to rotate by controlled manner in the directions indicated by the arrows in Figure 2.
  • each of the walls 7,8 and the base 1 is formed, over almost the entire length of these walls, a slender space defining for these walls 7,8 of the lower longitudinal slots 29 and 30.
  • rollers 28 and 25 respectively serve as downstream winders and upstream unwinders for a consumable sheet 31 of flexible plastic material, for example from 0.05 to 0.15 mm thick polyethylene.
  • rollers 27 and 26 serve respectively as downstream winders and upstream unwinders for another consumable sheet 32 identical to the sheet 31.
  • the installation being stopped it is first of all about coating the internal walls of the cabin, except carpet 14, with the plastic sheets 31 and 32.
  • the rollers 25 to 28 are rotated so as to allow a sufficient quantity of plastic sheet 31.32 to hang down, as drawn in dashed lines in FIG. 2.
  • rotation of the rollers, and a relatively high vacuum is applied in the space 21 using the medium pressure turbine, for example of the order of 200 to 300 millimeters of water column.
  • the operator then enters the cabin and manually applies the sheets 31 and 32 against the perforated walls 19, after having cut through the orifices for passage for the automatic pistols 11,12. Plating of the plastic sheets against the perforated walls 19 is ensured by the vacuum existing in the space 21.
  • an even stronger vacuum is applied in the tubes 23, which allows, taking into account the good regularity of suction provided by the porous walls 24, to guarantee a good seal around the openings.
  • the perforated inner wall may be made of plastic or other material of sufficient rigidity to withstand a depression of a few centimeters of column of water applied between the two walls.
  • the flexible sheets used can be made of paper, aluminum, metallized plastic film, or the like. These sheets can be applied manually in the form of separate layers, if there are no devices with unwind rollers and reels. For a half cabin, you can use a single protective sheet corresponding to the size of the ceiling, floor, vertical wall and silhouetted walls.
  • FIGS. 5 and 6 very schematically represent, in cross section and in partial view from above, a variant of the previous cabin 1, here with a pyramidal bottom 50 and conventional suction duct 51 , and rounded angles greater than 90 degrees between the different parts of the double wall 19.
  • the format of the protective film is often greater than the dimensions of the walls to be protected, the excess will be easily cut by following the edges of these walls.
  • the powder coating booth shown in Figures 7 and 8 is improved compared to the previous ones in the sense that it allows semi-automatic positioning of the protective film.
  • this cabin is equipped with mechanical means helping to press this film against its side walls.
  • this is a cabin fairly close to that of FIG. 5, in the sense that the suction of the unposed powder is carried out via a split tube 60, of slightly frustoconical shape, which is placed at the bottom of this cabin.
  • this cabin is essentially similar to that of FIG. 1, with a few minor differences: the upstream rollers 25,26 and downstream 27,28 are each in one piece and rest on roller supports 61, the cabin has on each side face three openings 10 passage for automatic powder projectors, and always a single opening 13 passage for a manual projector.
  • the tubes for bringing the above-mentioned space into depression 21 are also shown at 62 the tubes for bringing the above-mentioned space into depression 21.
  • this cabin has two complementary means intended to allow the establishment of the plastic sheets 31 and 32 without an operator having to penetrate inside the cabin.
  • These two means are as follows: - on the external part of each of the side walls 7, 8 of the cabin, four sliding doors 63, 64 are provided which are suspended from a common rail 64 and which are capable of completely obstructing, and in an almost airtight manner, the four openings 13 and 10 for the passage of the powder spray guns.
  • - At each of the longitudinal ends of the cabin are provided two vertical arms 65, which are articulated around a vertical axis 66 and which are recalled, by springs 67, in position of support against the faces inside walls 7 and 8 (see figure 8). Locking hooks not shown make it possible to maintain, if desired, the arms 67 at a distance from their bearing walls 7 and 8; these arms occupy most of the height of the cabin.
  • the four arms 65 are first of all manually removed to release the sheets 31 and 32 from their grip.
  • the sliding doors 63 and 64 are operated to allow them to obstruct the side openings 10, 13 for the passage of the powder spray guns (the latter have been previously retracted).
  • the motorized downstream rollers 27,28 are then started up to advance the plastic sheets 31,32 by a sufficient amount.
  • the four arms 65 are then unlocked, which are pressed against the ends of these sheets 31,32 under the action of the springs 67. This creates a practically closed suction space between the sheets 31,32 (which are for the dangling moment as drawn in dashed lines in FIG.

Abstract

Booth for electrostatic powder-coating with quick colour change. <??>It comprises a double wall (19) defining a space (21) in which a vacuum is applied. This double wall (19) is perforated in such a way that it permits the application thereto of an expendable plastic film (31, 32). <IMAGE>

Description

La présente invention se rapporte à une cabine de poudrage, en particulier de poudrage électrostatique, pour le revêtement d'objets, en particulier d'objets métalliques.The present invention relates to a powder coating booth, in particular electrostatic powder coating, for coating objects, in particular metallic objects.

L'application des résines organiques en poudre, en remplacement des peintures liquides traditionnelles, est devenue industrielle depuis environ une trentaine d'années, et en particulier la technique du revêtement d'objets par poudrage électrostatique est maintenant très largement répandue. Quels que soient les projecteurs de poudre utilisés, soit manuels, soit automa­tiques, le poudrage est réalisé dans une cabine de poudrage permettant de confiner de brouillard de poudre et, par une dépression créée dans la cabine, d'en récupérer l'excédent. La poudre récupérée est filtrée, puis recyclée.The application of powdered organic resins, replacing traditional liquid paints, has become industrial for about thirty years, and in particular the technique of coating objects by electrostatic powdering is now very widespread. Whatever powder sprayers are used, either manual or automatic, the powdering is carried out in a powdering booth making it possible to confine powder mist and, by a vacuum created in the booth, to recover the excess. The recovered powder is filtered and then recycled.

En cas de changement de couleur, il est nécessaire, avant de projeter la nouvelle poudre, d'une autre couleur, de nettoyer au préalable l'intérieur de la cabine pour enlever toute trace de la poudre de la première couleur, sans quoi il y aurait pollution de la nouvelle poudre par l'ancienne. Cette opération de nettoyage est assez longue, ce qui, du fait qu'elle nécessite d'arrêter l'installation de poudrage, pénalise lourdement le ren­dement de cette installation.In the event of a color change, it is necessary, before spraying the new powder, of another color, to clean the interior of the cabin beforehand to remove all traces of the powder of the first color, otherwise there is would pollute the new powder with the old. This cleaning operation is quite long, which, due to the fact that it requires stopping the powdering installation, severely penalizes the performance of this installation.

L'invention vise à remédier à cet inconvénient au moyen d'une cabine de poudrage par projection de poudre qui nécessite un intervalle de temps pour le changement de couleur qui est très inférieur à celui nécessaire pour les cabines de l'art antérieur. Elle se rapporte à une cabine de poudrage à parois externes rigides et à aspiration par le fond, ces parois externes étant doublées intérieurement sur tout ou partie de leur surface par une autre paroi rigide perméable à l'air. L'intervalle entre ces deux parois délimite un espace dans lequel est appliquée une dépression apte à entraîner le plaquage sur cette paroi perméable d'au moins une feuille souple, consommable et étanche, apte à la recouvrir sur tout ou partie de sa surface qui est extérieure à la zone d'aspiration par le fond.The invention aims to remedy this drawback by means of a powder spraying booth which requires a time interval for the color change which is much less than that required for booths of the prior art. It relates to a powder coating booth with rigid external walls and bottom suction, these external walls being lined internally over all or part of their surface by another rigid wall permeable to air. The interval between these two walls delimits a space in which a vacuum is applied capable of causing the plating on this permeable wall of at least one flexible, consumable and waterproof sheet, capable of covering it over all or part of its surface which is outside the suction area from the bottom.

L'invention sera bien comprise, et ses avantages et autres carac­téristiques ressortiront, au cours de la description suivante de quelques exemples non limitatifs de réalisation, en référence aux dessins schéma­tiques annexés dans lesquels :

  • Figure 1 est une vue en perspective partiellement écorchée de cette cabine de poudrage électrostatique ;
  • Figure 2 est une vue en coupe transversale selon II-II de figure 1 ;
  • Figure 3 est une vue en coupe selon III-III de figure 2 ;
  • Figure 4 est une coupe transversale agrandie d'une des ouvertures de passage d'un projecteur de poudre ;
  • Figure 5 est une vue, similaire à figure 2, d'une variante de réalisation de cette cabine ;
  • Figure 6 est une vue partielle de dessus de la cabine de figure 5 ;
  • Figure 7 est une vue en perspective d'une autre variante de réalisation ; et
  • Figure 8 est une vue de dessus, partielle et simplifiée, de la cabine de la figure 7.
The invention will be clearly understood, and its advantages and other characteristics will emerge during the following description of some nonlimiting exemplary embodiments, with reference to the appended schematic drawings in which:
  • Figure 1 is a partially cutaway perspective view of this electrostatic powder coating booth;
  • Figure 2 is a cross-sectional view along II-II of Figure 1;
  • Figure 3 is a sectional view along III-III of Figure 2;
  • Figure 4 is an enlarged cross section of one of the passage openings of a powder sprayer;
  • Figure 5 is a view, similar to Figure 2, of an alternative embodiment of this cabin;
  • Figure 6 is a partial top view of the cabin of Figure 5;
  • Figure 7 is a perspective view of another alternative embodiment; and
  • Figure 8 is a partial and simplified top view of the cabin in Figure 7.

En se reportant aux figures 1 à 4, cette cabine de poudrage électrostatique 1 est une cabine pour installation automatique de revê­tement d'objets (non représentés) qui défilent continûment, suspendus à des crochets métalliques 40 qui circulent sur un convoyeur 3 relié à la masse de l'installation.Referring to Figures 1 to 4, this electrostatic powder coating booth 1 is a booth for automatic installation of coating of objects (not shown) which are continuously scrolled, suspended from metal hooks 40 which circulate on a conveyor 3 connected to ground of the installation.

La cabine 1 a une forme générale parallélépipédique, et est pourvue de plusieurs ouvertures :
    - une ouverture frontale 4 et une ouverture arrière 5, appelées "silhouettes" et aptes à livrer passage aux objets à revêtir ;
    - une ouverture, ou fente, longitudinale 6, pratiquée dans le toit 18 de la cabine 1 et apte à livrer passage au convoyeur 3 ;
    - sur chacune des deux grandes faces latérales 7,8 de la cabine, deux ouvertures 9,10 de passage des projecteurs automatiques de poudre 11,12, et une ouverture 13 de passage d'un projecteur manuel (non repré­senté).The cabin 1 has a generally parallelepiped shape, and is provided with several openings:
- A front opening 4 and a rear opening 5, called "silhouettes" and able to give passage to the objects to be coated;
- A longitudinal opening, or slot 6, made in the roof 18 of the cabin 1 and capable of delivering passage to the conveyor 3;
- On each of the two large side faces 7, 8 of the cabin, two openings 9, 10 for passage of the automatic powder projectors 11, 12, and an opening 13 for passage of a manual projector (not shown).

De manière traditionnelle, le sol de la cabine est composé d'un tapis rotatif filtrant sans fin 14 au travers duquel est appliquée une aspiration qui met la cabine en dépression par rapport à l'atmosphère ambiante extérieure à celle-ci. Cette aspiration est réalisée par une dépression appliquée à l'intérieur du socle creux 15 de la cabine, ce socle contenant en outre les rouleaux 16 de support et d'avancement du tapis sans fin 14.Traditionally, the floor of the cabin is composed of an endless filtering rotating belt 14 through which a suction is applied which puts the cabin in depression with respect to the ambient atmosphere outside it. This suction is achieved by a vacuum applied inside the hollow base 15 of the cabin, this base also containing the rollers 16 for supporting and advancing the endless belt 14.

La bande filtrante 14 circule en sens inverse de la direction F d'avancée des pièces sur le convoyeur 3. Une rampe d'aspiration 17 est placée à l'aval de ce tapis sans fin 14 et récupère la poudre qui s'est déposée sur ce tapis 14.The filter strip 14 circulates in the opposite direction to the direction F of advancement of the parts on the conveyor 3. A suction ramp 17 is placed downstream of this endless belt 14 and recovers the powder which has deposited on this carpet 14.

Conformément à l'invention, les faces latérales 7,8 de la cabine et son toit 18 sont doublés intérieurement par une paroi métallique 19 percée de nombreux trous 20. Cette double paroi 19 est placée à une distance de 3 à 5 centimètres de la paroi extérieure 7,8,18.According to the invention, the side faces 7, 8 of the cabin and its roof 18 are lined internally by a metal wall 19 pierced with numerous holes 20. This double wall 19 is placed at a distance of 3 to 5 centimeters from the wall exterior 7,8,18.

L'espace 21 entre les deux parois est mis en dépression par rapport à l'intérieur de la cabine au moyen d'une turbine moyenne pression non représentée. La double paroi perforée 19 est soutenue par des entre­toises 22 (figure 4) et les ouvertures latérales 9,10,13 et supérieure 6 de la cabine sont bordées intérieurement par une tubulure 23, à section carrée, dont la face 24 regardant vers l'intérieur de la cabine est constituée par un matériau poreux fritté, tel que du bronze poreux. Une dépression supérieure à celle régnant dans l'espace 21 est appliquée à l'intérieur des tubes 23 par une autre turbine non représentée.The space 21 between the two walls is placed under vacuum relative to the interior of the cabin by means of a medium pressure turbine not shown. The double perforated wall 19 is supported by spacers 22 (FIG. 4) and the lateral openings 9, 10, 13 and upper 6 of the cabin are bordered internally by a tube 23, of square section, the face 24 looking towards the interior of the cabin is constituted by a porous sintered material, such as porous bronze. A vacuum greater than that prevailing in the space 21 is applied to the interior of the tubes 23 by another turbine, not shown.

De part et d'autre de la fente 6, le toit 18 de la cabine porte deux rangées de rouleaux 25,26. Pareillement, les grandes faces latérales 7 et 8 portent, à leur partie inférieure, deux rangées horizontales 27,28 de rouleaux de mêmes diamètres que les autres rouleaux 25,26. De même que pour les rouleaux 25,26, les rouleaux 27,28 sont placés sur la face extérieure des parois 7 et 8. Tous ces rouleaux 25 à 28 peuvent éventuellement être motorisés, par des moyens classiques non représentés, de façon à tourner de manière commandée dans les sens indiqués par les flèches sur la figure 2.On either side of the slot 6, the roof 18 of the cabin carries two rows of rollers 25, 26. Similarly, the large lateral faces 7 and 8 carry, at their lower part, two horizontal rows 27, 28 of rollers of the same diameters as the other rollers 25, 26. As for the rollers 25, 26, the rollers 27, 28 are placed on the outer face of the walls 7 and 8. All of these rollers 25 to 28 can optionally be motorized, by conventional means not shown, so as to rotate by controlled manner in the directions indicated by the arrows in Figure 2.

Entre la base de chacune des parois 7,8 et le socle 1 est ménagé, sur la quasi-totalité de la longueur de ces parois, un espace longiligne définissant pour ces parois 7,8 des lumières longitudinales inférieures 29 et 30.Between the base of each of the walls 7,8 and the base 1 is formed, over almost the entire length of these walls, a slender space defining for these walls 7,8 of the lower longitudinal slots 29 and 30.

Les rouleaux 28 et 25 servent respectivement d'enrouleur aval et de dérouleur amont pour une feuille consommable 31 en matière plastique souple, par exemple en polyéthylène de 0,05 à 0,15 millimètres d'épaisseur. De même, les rouleaux 27 et 26 servent respectivement d'enrouleur aval et de dérouleur amont pour une autre feuille consommable 32 identique à la feuille 31.The rollers 28 and 25 respectively serve as downstream winders and upstream unwinders for a consumable sheet 31 of flexible plastic material, for example from 0.05 to 0.15 mm thick polyethylene. Likewise, the rollers 27 and 26 serve respectively as downstream winders and upstream unwinders for another consumable sheet 32 identical to the sheet 31.

Le fonctionnement de cette cabine de poudrage est le suivant :The operation of this powder coating booth is as follows:

L'installation étant arrêtée, il s'agit de revêtir tout d'abord la majeure partie des parois internes de la cabine, tapis 14 excepté, avec les feuilles plastiques 31 et 32. Pour ceci, on entraîne en rotation les rouleaux 25 à 28 de façon à laisser pendre une quantité suffisante de feuille plastique 31,32, comme dessiné en traits mixtes à la figure 2. On arrête alors la rotation des rouleaux, et l'on applique, à l'aide de la turbine moyenne pression, une relativement forte dépression dans l'espace 21, par exemple de l'ordre de 200 à 300 millimètres de colonne d'eau. L'opérateur pénètre alors dans la cabine et applique manuellement les feuilles 31 et 32 contre les parois perforées 19, après avoir découpé au couteau des orifices de passage pour les pistolets automatiques 11,12. Le plaquage des feuilles plastiques contre les parois perforées 19 est assuré par la dépression existant dans l'espace 21. Bien entendu, une dépression encore plus forte est appliquée dans les tubes 23, ce qui permet, compte tenu de la bonne régularité d'aspiration assurée par les parois poreuses 24, de garantir une bonne étanchéité autour des ouvertures.The installation being stopped, it is first of all about coating the internal walls of the cabin, except carpet 14, with the plastic sheets 31 and 32. For this, the rollers 25 to 28 are rotated so as to allow a sufficient quantity of plastic sheet 31.32 to hang down, as drawn in dashed lines in FIG. 2. rotation of the rollers, and a relatively high vacuum is applied in the space 21 using the medium pressure turbine, for example of the order of 200 to 300 millimeters of water column. The operator then enters the cabin and manually applies the sheets 31 and 32 against the perforated walls 19, after having cut through the orifices for passage for the automatic pistols 11,12. Plating of the plastic sheets against the perforated walls 19 is ensured by the vacuum existing in the space 21. Of course, an even stronger vacuum is applied in the tubes 23, which allows, taking into account the good regularity of suction provided by the porous walls 24, to guarantee a good seal around the openings.

Les parois internes de la cabine étant revêtues de manière étanche par les feuilles 31,32, comme dessiné en traits pleins sur la figure 2, ou découpe éventuellement à travers l'orifice 13 un passage dans la feuille plastique pour un pistolet manuel et on met en route l'installation, en abaissant de préférence la dépression dans l'espace 21 pour diminuer le niveau sonore : on règle pour ceci la vitesse de la turbine jusqu'à obtenir une dépression de l'ordre de 120 millimètres de colonne d'eau.The internal walls of the cabin being coated in a sealed manner by the sheets 31, 32, as drawn in solid lines in FIG. 2, or optionally cutting through the orifice 13 a passage in the plastic sheet for a manual pistol and we put the installation on the way, preferably by lowering the vacuum in the space 21 to reduce the noise level: for this the turbine speed is adjusted until a vacuum of the order of 120 millimeters of water column is obtained .

Pour effectuer par la suite un changement de couleur, on relâche toutes les mises en dépression, de sorte que les feuilles 31 et 32 reprennent leur position lâche dessinée en traits mixtes à la figure 2, puis on entraîne en rotation les rouleaux 25 à 27 jusqu'à ce que les parties polluées de 31,32 soient remplacées par des parties propres. On recommence alors les opérations décrites ci-dessus.To make a change of color thereafter, all the depressions are released, so that the sheets 31 and 32 resume their loose position drawn in dashed lines in FIG. 2, then the rollers 25 to 27 are rotated up to 'that the polluted parts of 31.32 are replaced by clean parts. The operations described above are then repeated.

Bien entendu, l'invention n'est pas limitée à l'exemple de réali­sation qui vient d'être décrit. Elle s'applique aussi bien à une cabine d'application manuelle à ouverture frontale, sans passage de convoyeur. La paroi intérieure perforée peut être en matière plastique ou autre matériau d'une rigidité suffisante pour résister à une dépression de quelques centi­mètres de colonne d'eau appliquée entre les deux parois. Les feuilles souples utilisées peuvent être en papier, en aluminium, en film plastique métallisé, ou autres. Ces feuilles peuvent être appliquées manuellement sous forme de laies séparées, si l'on ne dispose pas de dispositifs à rouleaux dérouleurs et enrouleurs. Pour une demi-cabine, on pourra utiliser une seule feuille de protection correspondant à la dimension du plafond, du plancher, de la paroi verticale et des parois des silhouettes. Il sera en général avantageux, pour faciliter la mise en place de la feuille, de prévoir des angles arrondis et de prévoir un angle supérieur à 90 degrés entre la paroi de fond et la paroi de la silhouette. A titre d'exemple de cette dernière caractéristique, les figures 5 et 6 représentent très schématiquement, en coupe transversale et en vue partielle de dessus, une variante de la cabine 1 précédente, avec ici un fond pyramidal 50 et gaine d'aspiration 51 classiques, et des angles arrondis et supérieurs à 90 degrés entre les différentes parties de la double paroi 19. Le format du film protecteur étant souvent supérieur aux dimensions des parois à protéger, l'excédent sera coupé facilement en suivant les arêtes de ces parois.Of course, the invention is not limited to the embodiment which has just been described. It applies equally well to a manual application booth with front opening, without passing a conveyor. The perforated inner wall may be made of plastic or other material of sufficient rigidity to withstand a depression of a few centimeters of column of water applied between the two walls. The flexible sheets used can be made of paper, aluminum, metallized plastic film, or the like. These sheets can be applied manually in the form of separate layers, if there are no devices with unwind rollers and reels. For a half cabin, you can use a single protective sheet corresponding to the size of the ceiling, floor, vertical wall and silhouetted walls. It will generally be advantageous, to facilitate the positioning of the sheet, to provide rounded corners and to provide an angle greater than 90 degrees between the bottom wall and the silhouette wall. As an example of this last characteristic, FIGS. 5 and 6 very schematically represent, in cross section and in partial view from above, a variant of the previous cabin 1, here with a pyramidal bottom 50 and conventional suction duct 51 , and rounded angles greater than 90 degrees between the different parts of the double wall 19. The format of the protective film is often greater than the dimensions of the walls to be protected, the excess will be easily cut by following the edges of these walls.

La cabine de poudrage représentée aux figures 7 et 8 est améliorée par rapport aux précédentes dans le sens qu'elle permet une mise en place semi-automatique du film protecteur. En outre, cette cabine est équipée de moyens mécaniques aidant au plaquage de ce film contre ses parois latérales.The powder coating booth shown in Figures 7 and 8 is improved compared to the previous ones in the sense that it allows semi-automatic positioning of the protective film. In addition, this cabin is equipped with mechanical means helping to press this film against its side walls.

Il s'agit dans cet exemple d'une cabine assez voisine de celle de la figure 5, en ce sens que l'aspiration de la poudre non déposée est effectuée par l'intermédiaire d'un tube fendu 60, de forme légèrement tronconique, qui est placé dans le fond de cette cabine. Pour le reste, cette cabine est essentiellement semblable à celle de la figure 1, à quelques différences mineures près : les rouleaux amont 25,26 et aval 27,28 sont chacun d'une seule pièce et reposent sur des supports à galets 61, la cabine a sur chaque face latérale trois ouvertures 10 de passage pour les projecteurs automa­tiques de poudre, et toujours une seule ouverture 13 de passage pour un projecteur manuel. A titre illustratif, on a aussi représenté en 62 les tubulures de mise en dépression de l'espace 21 précité.In this example, this is a cabin fairly close to that of FIG. 5, in the sense that the suction of the unposed powder is carried out via a split tube 60, of slightly frustoconical shape, which is placed at the bottom of this cabin. For the rest, this cabin is essentially similar to that of FIG. 1, with a few minor differences: the upstream rollers 25,26 and downstream 27,28 are each in one piece and rest on roller supports 61, the cabin has on each side face three openings 10 passage for automatic powder projectors, and always a single opening 13 passage for a manual projector. By way of illustration, there is also shown at 62 the tubes for bringing the above-mentioned space into depression 21.

En revanche, cette cabine présente deux moyens complémentaires destinés à permettre la mise en place des feuilles plastiques 31 et 32 sans qu'un opérateur n'ait à pénétrer à l'intérieur de la cabine. Ces deux moyens sont les suivants :
    - sur la partie externe de chacune des parois latérales 7,8 de la cabine sont prévues quatre portes coulissantes 63,64 qui sont suspendues à un rail commun 64 et qui sont aptes à obstruer totalement, et de manière pratiquement étanche à l'air, les quatre ouvertures 13 et 10 de passage des pistolets de poudrage.
    - à chacune des extrémités longitudinales de la cabine sont prévus deux bras verticaux 65, qui sont articulés autour d'un axe vertical 66 et qui sont rappelés, par des ressorts 67, en position d'appui contre les faces intérieures des parois 7 et 8 (voir figure 8). Des crochets de verrouillage non représentés permettent de maintenir, si on le souhaite, les bras 67 à distance de leurs parois d'appui 7 et 8 ; ces bras occupent la majeure partie de la hauteur de la cabine.On the other hand, this cabin has two complementary means intended to allow the establishment of the plastic sheets 31 and 32 without an operator having to penetrate inside the cabin. These two means are as follows:
- on the external part of each of the side walls 7, 8 of the cabin, four sliding doors 63, 64 are provided which are suspended from a common rail 64 and which are capable of completely obstructing, and in an almost airtight manner, the four openings 13 and 10 for the passage of the powder spray guns.
- At each of the longitudinal ends of the cabin are provided two vertical arms 65, which are articulated around a vertical axis 66 and which are recalled, by springs 67, in position of support against the faces inside walls 7 and 8 (see figure 8). Locking hooks not shown make it possible to maintain, if desired, the arms 67 at a distance from their bearing walls 7 and 8; these arms occupy most of the height of the cabin.

Pour effecteur le changement de couleur avec cette cabine, on écarte tout d'abord manuellement les quatre bras 65 pour libérer les feuilles 31 et 32 de leur emprise. On manoeuvre les portes coulissantes 63 et 64 pour leur permettre d'obstruer les ouvertures latérales 10,13 de passage des pistolets de poudrage (ces derniers ont été préalablement escamotés). On met alors en route les rouleaux aval motorisés 27,28 pour faire avancer les feuilles plastiques 31,32 d'une quantité suffisante. On déverrouille alors les quatre bras 65, qui viennent se plaquer contre les extrémités de ces feuilles 31,32 sous l'action des ressorts 67. Il est ainsi créé un espace d'aspiration pratiquement clos entre les feuilles 31,32 (qui sont pour le moment pendantes comme dessiné en traits mixtes sur la figure 2) et les parois internes de la cabine, de sorte que, en appliquant alors la dépression dans l'espace inter-parois 21 précité, on entraîne le plaquage automatique de ces feuilles 31,32 contre ces parois internes, ce qui représente une amélioration intéressante par rapport aux cabines précédemment décrites. A remarquer bien entendu que, quoi qu'il en soit, il sera toujours avantageux de prévoir des bras 65, même sur les cabines décrites précédemment, afin d'améliorer le maintien des feuilles 31,32 contre les parois internes de la cabine.To effect the color change with this cabin, the four arms 65 are first of all manually removed to release the sheets 31 and 32 from their grip. The sliding doors 63 and 64 are operated to allow them to obstruct the side openings 10, 13 for the passage of the powder spray guns (the latter have been previously retracted). The motorized downstream rollers 27,28 are then started up to advance the plastic sheets 31,32 by a sufficient amount. The four arms 65 are then unlocked, which are pressed against the ends of these sheets 31,32 under the action of the springs 67. This creates a practically closed suction space between the sheets 31,32 (which are for the dangling moment as drawn in dashed lines in FIG. 2) and the internal walls of the cabin, so that, by applying the vacuum in the aforementioned inter-wall space 21, the automatic plating of these sheets 31 is brought about, 32 against these internal walls, which represents an interesting improvement over the previously described cabs. Note of course that, in any event, it will always be advantageous to provide arms 65, even on the booths described above, in order to improve the retention of the sheets 31, 32 against the internal walls of the booth.

Claims (14)

1 - Cabine de poudrage à parois externes rigides et à aspiration par le fond, caractérisée en ce que ces parois externes (7,8,18) sont doublées intérieurement, sur tout ou partie de leur surface, par une autre paroi rigide (19) perméable à l'air, l'intervalle entre ces parois délimitant un espace (21) dans lequel est appliquée une dépression apte à assurer le plaquage sur cette paroi perméable (19) d'au moins une feuille souple (31,32), consommable et étanche, apte à la recouvrir sur tout ou partie de sa surface qui est extérieure à la zone d'aspiration par le fond. 1 - Powder coating booth with rigid external walls and bottom suction, characterized in that these external walls (7,8,18) are lined internally, over all or part of their surface, by another rigid wall (19) permeable to air, the interval between these walls delimiting a space (21) in which a vacuum is applied capable of ensuring the plating on this permeable wall (19) of at least one flexible sheet (31,32), consumable and waterproof, suitable for covering it over all or part of its surface which is external to the suction zone from the bottom. 2 - Cabine de poudrage selon la revendication 1, caractérisée en ce que l'épaisseur de l'intervalle (21) entre les parois est de l'ordre de quelques centimètres. 2 - Powder coating booth according to claim 1, characterized in that the thickness of the gap (21) between the walls is of the order of a few centimeters. 3 - Cabine de poudrage selon la revendication 1 ou la revendi­cation 2, caractérisée en ce qu'elle comporte, pour l'alimentation en feuille(s) souple(s) (31,32), un ou plusieurs dispositifs à rouleaux dérouleurs (25,26) et enrouleurs (28,27). 3 - Powder coating booth according to claim 1 or claim 2, characterized in that it comprises, for the supply of flexible sheet (s) (31,32), one or more devices with unwinding rollers (25 , 26) and reels (28,27). 4 - Cabine de poudrage selon l'une des revendications 1 à 3, caractérisée en ce qu'au moins une des ouvertures (9,10,13,16) de la cabine est au moins partiellement bordée par une tubulure (23) qui est apte à être mise sous une dépression supérieure à celle régnant dans l'espace (21) entre les parois, la face (24) de cette tubulure qui est dirigée vers l'intérieur de la cabine étant constituée par un matériau poreux. 4 - Powder coating booth according to one of claims 1 to 3, characterized in that at least one of the openings (9,10,13,16) of the booth is at least partially bordered by a tube (23) which is able to be placed under a depression greater than that prevailing in the space (21) between the walls, the face (24) of this tubing which is directed towards the interior of the cabin being constituted by a porous material. 5 - Cabine de poudrage selon l'une des revendications 1 à 4, caractérisée en ce que la double parois (19) perméable à l'air présente des angles arrondis pour faciliter le plaquage de la feuille. 5 - Powder coating booth according to one of claims 1 to 4, characterized in that the double walls (19) permeable to air has rounded angles to facilitate the plating of the sheet. 6 - Cabine de poudrage selon l'une des revendications 1 à 5, caractérisée en ce que la feuille souple (31,32) est en matière plastique. 6 - Powder coating booth according to one of claims 1 to 5, characterized in that the flexible sheet (31,32) is made of plastic. 7 - Cabine selon la revendication 6, caractérisée en ce que la feuille souple (31,32) est en matière plastique métallisée. 7 - Cabin according to claim 6, characterized in that the flexible sheet (31,32) is made of metallized plastic. 8 - Cabine selon l'une des revendications 1 à 5, caractérisée en ce que la feuille souple (31,32) est en aluminium. 8 - Cabin according to one of claims 1 to 5, characterized in that the flexible sheet (31,32) is made of aluminum. 9 - Cabine selon l'une des revendications 1 à 8, caractérisée en ce qu'elle est équipée de moyens pour appliquer, dans ledit espace (21) une dépression intense au cours de la mise en place de la feuille souple (31,32), puis une dépression moins intense en cours d'utilisation de la cabine de poudrage. 9 - Cabin according to one of claims 1 to 8, characterized in that it is equipped with means for applying, in said space (21) an intense vacuum during the introduction of the flexible sheet (31,32 ), then a less intense vacuum during use of the powder coating booth. 10 - Cabine selon l'une des revendications 1 à 9, caractérisée en ce que la double paroi (19) perméable à l'air présente des angles arrondis et/ou supérieurs à 90 degrés, aptes à faciliter la mise en place de la feuille souple (31,32). 10 - Cabin according to one of claims 1 to 9, characterized in that the double wall (19) permeable to air has rounded angles and / or greater than 90 degrees, capable of facilitating the positioning of the flexible sheet (31,32). 11 - Cabine selon l'une des revendications 1 à 10, caractérisée en ce qu'elle comporte en outre des moyens (63 à 67) pour permettre la mise en place de la feuille (31,32) sans qu'un opérateur n'ait à pénétrer à l'intérieur de la cabine. 11 - Cabin according to one of claims 1 to 10, characterized in that it further comprises means (63 to 67) to allow the establishment of the sheet (31,32) without an operator n ' has to get inside the cabin. 12 - Cabine selon la revendication 11, caractérisée en ce que ces moyens comprennent des organes (63,64) d'obturation des ouvertures (10,13) de passage des projecteurs de poudre. 12 - Cabin according to claim 11, characterized in that these means comprise members (63,64) for closing the openings (10,13) for the passage of the powder projectors. 13 - Cabine selon la revendication 12, caractérisée en ce que ces organes d'obturation sont constitués par des portes coulissantes (63,64). 13 - Cabin according to claim 12, characterized in that these shutter members are constituted by sliding doors (63,64). 14 - Cabine selon l'une des revendications 1 à 13, caractérisée en ce qu'elle comporte, à chacune de ses extrémités, des bras articulés (65) aptes à plaquer les extrémités de la feuille (31,32) contre la paroi interne de la cabine. 14 - Cabin according to one of claims 1 to 13, characterized in that it comprises, at each of its ends, articulated arms (65) capable of pressing the ends of the sheet (31,32) against the internal wall from the cabin.
EP88420144A 1987-05-05 1988-05-04 Booth for coating objects with powder Expired - Lifetime EP0291423B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88420144T ATE74028T1 (en) 1987-05-05 1988-05-04 CABIN FOR POWDER COATING OF OBJECTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8706679A FR2614805B1 (en) 1987-05-05 1987-05-05 POWDER CABINET FOR COATING OBJECTS
FR8706679 1987-05-05

Publications (2)

Publication Number Publication Date
EP0291423A1 true EP0291423A1 (en) 1988-11-17
EP0291423B1 EP0291423B1 (en) 1992-03-25

Family

ID=9351029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420144A Expired - Lifetime EP0291423B1 (en) 1987-05-05 1988-05-04 Booth for coating objects with powder

Country Status (5)

Country Link
US (1) US4924803A (en)
EP (1) EP0291423B1 (en)
AT (1) ATE74028T1 (en)
DE (1) DE3869467D1 (en)
FR (1) FR2614805B1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004879A1 (en) * 1990-02-16 1990-08-23 Gepatol Dahlem Kg Dry lacquer overspray PPTN. - by moving heated web of paper or endless heated band with anti:adhesive coating
WO1991014509A1 (en) * 1990-03-19 1991-10-03 Eric Von Gertten Ab A device for spray painting and similar treatment of objects
WO1992008549A1 (en) * 1990-11-16 1992-05-29 Loeoef Ingemar Spray booth
FR2698292A1 (en) * 1992-11-20 1994-05-27 Trevisan Ferdinando Powder paint installation with a variable section booth.
DE19645261A1 (en) * 1996-11-02 1998-05-07 Gema Volstatic Ag Device for spray coating objects
CN104998792A (en) * 2015-07-30 2015-10-28 芜湖市海联机械设备有限公司 Remaining mist treatment device for bearing cleaning line
FR3041549A1 (en) * 2015-09-28 2017-03-31 Patrice Ruez ASPERSION CABIN
CN111389634A (en) * 2020-03-21 2020-07-10 马天锐 Packing box surface spraying processing system

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5162132A (en) * 1990-10-10 1992-11-10 Reclaim Collapsible, interchangeable spray booth apparatus and method
US5240504A (en) * 1991-07-03 1993-08-31 Russell Mazakas Spray booth liner
US5236506A (en) * 1991-07-03 1993-08-17 Russell Mazakas Method for installing a portable spray booth liner
US5229171A (en) * 1991-12-23 1993-07-20 Research Triangle Institute Apparatus and method for uniformly coating a substrate in an evacuable chamber
US5248524A (en) * 1992-01-27 1993-09-28 Paragon Trade Brands Method and apparatus for zoned application of particles in fibrous material with dual dispensing nozzles
ATE140643T1 (en) * 1992-07-15 1996-08-15 Michael Eder DEVICE FOR SPRAY TREATMENT
EP0839581A1 (en) * 1996-11-02 1998-05-06 Josef Hasler Powder coating booth comprising flexible inner liner
US6866717B2 (en) * 2000-10-05 2005-03-15 Nordson Corporation Powder coating spray booth with air curtain
US6730167B2 (en) 2000-10-05 2004-05-04 Nordson Corporation Powder coating spray booth with a powder extraction system
ITVI20020177A1 (en) * 2002-08-05 2004-02-06 Ind Meccaniche Bergi Ofb Spa PLANT FOR THE PURIFICATION OF SMOKES, VAPORS AND OTHER SUSPENSION POLLUTING SUBSTANCES.
DE202005019313U1 (en) * 2005-12-08 2006-02-23 J. Wagner Ag Powder coating booth
CN100460083C (en) * 2006-05-17 2009-02-11 裕东（中山）机械工程有限公司 Powder-spraying chamber for electrostatic powder spray coated
US20090283031A1 (en) * 2008-05-16 2009-11-19 Michael Grasso Portable shake sprayer assembly
US9358566B2 (en) * 2012-05-18 2016-06-07 Pem, Inc. In-line pretreatment system for machine parts
DE102012211135A1 (en) * 2012-06-28 2014-01-02 Dürr Systems GmbH Sealing device for slot-shaped aperture extending in longitudinal direction in e.g. wall of paint spray booth in workpieces coating system, has seal elements arranged movably supported at holding device that is fixed stationary to wall
WO2020217074A1 (en) * 2019-04-23 2020-10-29 Cad-Project Srl Cleaning device of the paint residues in the painting machines of the electronic boards

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6946515U (en) * 1969-12-01 1970-04-02 Eisenmann K G Maschb Ges PAINT POWDER COATING BOOTH
DE2704497A1 (en) * 1977-02-03 1978-08-10 Otto Mueller Ohg Maschinen Und Cabin for coating workpieces with plastics powder - has removable wall lining consisting of paper or foil, to facilitate cleaning
WO1987000771A1 (en) * 1985-07-29 1987-02-12 Volstatic Limited Powder deposition apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741155A (en) * 1970-08-21 1973-06-26 Minnesota Mining & Mfg Apparatus for particulate coating of an elongate article
CH562639A5 (en) * 1973-07-19 1975-06-13 Gema Ag
CA997197A (en) * 1973-12-07 1976-09-21 Volstatic Of Canada Limited Aerated surface structure
CH668008A5 (en) * 1985-04-30 1988-11-30 H U Ramseier Fa ELECTROSTATIC POWDER COATING SYSTEM.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6946515U (en) * 1969-12-01 1970-04-02 Eisenmann K G Maschb Ges PAINT POWDER COATING BOOTH
DE2704497A1 (en) * 1977-02-03 1978-08-10 Otto Mueller Ohg Maschinen Und Cabin for coating workpieces with plastics powder - has removable wall lining consisting of paper or foil, to facilitate cleaning
WO1987000771A1 (en) * 1985-07-29 1987-02-12 Volstatic Limited Powder deposition apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004879A1 (en) * 1990-02-16 1990-08-23 Gepatol Dahlem Kg Dry lacquer overspray PPTN. - by moving heated web of paper or endless heated band with anti:adhesive coating
WO1991014509A1 (en) * 1990-03-19 1991-10-03 Eric Von Gertten Ab A device for spray painting and similar treatment of objects
WO1992008549A1 (en) * 1990-11-16 1992-05-29 Loeoef Ingemar Spray booth
FR2698292A1 (en) * 1992-11-20 1994-05-27 Trevisan Ferdinando Powder paint installation with a variable section booth.
DE19645261A1 (en) * 1996-11-02 1998-05-07 Gema Volstatic Ag Device for spray coating objects
CN104998792A (en) * 2015-07-30 2015-10-28 芜湖市海联机械设备有限公司 Remaining mist treatment device for bearing cleaning line
FR3041549A1 (en) * 2015-09-28 2017-03-31 Patrice Ruez ASPERSION CABIN
CN111389634A (en) * 2020-03-21 2020-07-10 马天锐 Packing box surface spraying processing system

Also Published As

Publication number Publication date
DE3869467D1 (en) 1992-04-30
FR2614805B1 (en) 1989-10-20
FR2614805A1 (en) 1988-11-10
EP0291423B1 (en) 1992-03-25
ATE74028T1 (en) 1992-04-15
US4924803A (en) 1990-05-15

Similar Documents

Publication Publication Date Title
EP0291423B1 (en) Booth for coating objects with powder
EP0008270B1 (en) Method and apparatus for pneumatically conveying loose material
EP0119126A1 (en) Process and device for the production of alternated monomolecular layers
EP0270653B1 (en) Device for continously cleaning and/or decontaminating a band of a thermoplastic film
WO2006075074A1 (en) Industrial paint installation
EP0299815A1 (en) Vacuum cleaner with a flexible tight bag
FR2646107A1 (en) CABIN OF ELECTROSTATIC PAINTING
FR2698292A1 (en) Powder paint installation with a variable section booth.
CH693305A5 (en) Removable inking device for a flexographic printing machine.
FR2859397A1 (en) Powder supply plant for e.g. room painting installation, has two air blast nozzles for cleaning interior and exterior of suction tubes, respectively and placed below support at vertical direction of tubes
WO1998033976A1 (en) Dust extracting installation on machine producing crepe paper
BE1006600A3 (en) Method for making pile of sealed joints, device for the implementation of the material and sealing seal and realise.
BE488655A (en)
FR2724583A1 (en) CABIN FOR COVERING OBJECTS BY SPRAYING POWDER MATERIAL AND METHOD FOR CLEANING SUCH A CAB
EP3069774A1 (en) Dust-collector with filtering cartridges
EP0783912A1 (en) Self-cleaning filtration device
BE1026143B1 (en) DEVICE FOR MANIPULATING PARTICLES
CA1249204A (en) Universal rincing apparatus, particularly for the paper making industry, belt conveyors and the like
CH626815A5 (en) Filtration process and apparatus
FR2763528A1 (en) Dust suction head for power tool
EP0814369A2 (en) Device for projecting water to form an image receiving screen
FR3079434A3 (en) APPARATUS FOR LASER OR PLASMA CUTTING OF PARTS FROM LAMINAR MATERIAL
EP0072746A2 (en) Hand held spraygun for dispersing a plant treatment liquid
CA1111747A (en) Pre-pasting device for strip materials
CH661910A5 (en) METHOD AND DEVICE FOR SEPARATING AND TRANSPORTING PIECES OF FABRIC.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19881028

17Q First examination report despatched

Effective date: 19891208

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19920325

Ref country code: AT

Effective date: 19920325

Ref country code: NL

Effective date: 19920325

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19920325

Ref country code: GB

Effective date: 19920325

Ref country code: SE

Effective date: 19920325

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19920325

REF Corresponds to:

Ref document number: 74028

Country of ref document: AT

Date of ref document: 19920415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3869467

Country of ref document: DE

Date of ref document: 19920430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19920531

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920531

Ref country code: LI

Effective date: 19920531

Ref country code: BE

Effective date: 19920531

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
BERE Be: lapsed

Owner name: CELANT JEAN-JACQUES

Effective date: 19920531

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930202

REG Reference to a national code

Ref country code: CH

Ref legal event code: AUV

Free format text: LE BREVET CI-DESSUS EST TOMBE EN DECHEANCE, FAUTE DE PAIEMENT, DE LA 5E ANNUITE.

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930430

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950131

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST