WO2015001257A1 - Method and facility for treating a surface of a polymer object - Google Patents

Method and facility for treating a surface of a polymer object Download PDF

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Publication number
WO2015001257A1
WO2015001257A1 PCT/FR2014/051697 FR2014051697W WO2015001257A1 WO 2015001257 A1 WO2015001257 A1 WO 2015001257A1 FR 2014051697 W FR2014051697 W FR 2014051697W WO 2015001257 A1 WO2015001257 A1 WO 2015001257A1
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WO
WIPO (PCT)
Prior art keywords
cleaning
jet
flame
treated
nozzle
Prior art date
Application number
PCT/FR2014/051697
Other languages
French (fr)
Inventor
Sophie Vidal
Johann TETE
Original Assignee
Compagnie Plastic Omnium
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 Compagnie Plastic Omnium filed Critical Compagnie Plastic Omnium
Publication of WO2015001257A1 publication Critical patent/WO2015001257A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/08—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by flames
    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
    • B05D3/101—Pretreatment of polymeric substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/0064—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes
    • B08B7/0071—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/04—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by a combination of operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2

Definitions

  • the present invention relates to the technical field of the treatment of a surface of a polymer object, more particularly of a surface of a part for a motor vehicle, in particular a bodywork part.
  • Part for a motor vehicle including a body part, participating in the aesthetic appearance of a vehicle, is usually coated with paint.
  • a piece for a motor vehicle in particular a bodywork part, may be coated with glue, in particular to be covered by a part of appearance such as a skin or a spoiler tailgate.
  • thermoplastic polymer for example polypropylene (PP), polyamide (PA), acrylobutadiene styrene (ABS), or a mixture of acrylobutadiene styrene and polycarbonate (ABS / PC), or in thermosetting polymer, for example in SMC (according to the acronym for Sheet Molding Compound) or in epoxy (EP), it is advisable, before coating it with paint or glue, to clean and treating the surface to be coated to provide desired cleanliness and adhesion properties of the coating. These characteristics ensure a good appearance and a good adhesion of the coating on the surface.
  • thermoplastic polymer for example polypropylene (PP), polyamide (PA), acrylobutadiene styrene (ABS), or a mixture of acrylobutadiene styrene and polycarbonate (ABS / PC)
  • thermosetting polymer for example in SMC (according to the acronym for Sheet Molding Compound) or in epoxy (EP)
  • a flame is applied to the surface to be treated.
  • the carbon dioxide contained in the cleaning jet is usually in the form of particles, usually in the form of snow or flakes, the size of the particles being adapted to the polymer and the surface to be cleaned.
  • the application of the flame optimizes the surface tension and the adhesion of the subsequently deposited paint or adhesive to the surface.
  • the flame (which can reach 1800 ° C) allows the development of highly reactive radicals and, thus, polar functions on the surface of the treated object promoting interactions with the coating applied to the surface. It should be noted that the flame also has the effect of reducing the static electricity of the treated surface.
  • WO 2008/151772 proposes to perform the projection of the cleaning jet and the application of the flame in the same enclosure but in two successive steps.
  • the flame application step is therefore carried out after the step of spraying the cleaning jet. It is therefore necessary, before being able to coat the surface of paint or glue, to wait the necessary time for these two stages to be completed.
  • the object of the invention is in particular to optimize the preparation time of the surface to be coated with a polymer article, ie the total duration of the projection of the cleaning jet and the application of the flame, without affecting the quality of the result obtained.
  • the subject of the invention is a process for treating a surface of a polymer article, in particular polypropylene, for example a part for a motor vehicle, in particular a bodywork part, this method being of the type in which :
  • At least one jet is sprayed, said cleaning jet, comprising carbon dioxide on the surface to be treated, the carbon dioxide contained in the cleaning jet being preferably in the form of particles, especially in the state of snow or glitter, and
  • the carbon dioxide is sprayed and the flame is applied to the surface to be treated so that, simultaneously, a first zone of the surface to be treated is subjected to the carbon dioxide projection and a second The area of the surface to be treated is subjected to the application of the flame, each area of the surface to be treated being subjected first to the carbon dioxide projection and then to the application of the flame.
  • the projection of the cleaning jet and the application of the flame being carried out simultaneously on the object to be treated optimizes the preparation time of the surface to be coated with the polymer object.
  • the invention makes it possible, if necessary, to reduce the preparation time of the surface to be coated by approximately half compared to the usual preparation time in the state of the art.
  • the cleaning jet is formed by means of a nozzle, said cleaning nozzle, and the flame is formed by means of a burner, the cleaning nozzle and the burner being carried by a common support;
  • the flame is produced by combustion of a mixture of gas and air, the gas comprising a component chosen, preferably, from propane, propane depropylene, methane, butane or town gas, the gas mixture and air being preferably such that the air is in excess in the mixture with respect to the stoichiometric conditions of the combustion to obtain an oxidizing action of the flame, this excess being between 0 and 15%, preferably between 0 and 10%, relative to the stoichiometric proportion of the air, or the mixture of gas and air being such that the air is deficient in the mixing with the stoichiometric conditions of the combustion to obtain a reducing action of the flame;
  • the gas comprising a component chosen, preferably, from propane, propane depropylene, methane, butane or town gas
  • the gas mixture and air being preferably such that the air is in excess in the mixture with respect to the stoichiometric conditions of the combustion to obtain an oxidizing action of the flame, this excess being between 0 and 15%,
  • a separation jet comprising air, preferably ionized, is sprayed between the cleaning jet and the flame;
  • the cleaning jet has a divergent shape of oblong section, at least one jet of air, said jet formatting, preferably ionized, participating in shaping the cleaning jet;
  • this surface is coated with paint or glue.
  • the subject of the invention is also an installation for treating a surface of a polymer article, in particular polypropylene, for the implementation of the method defined above, characterized in that it comprises:
  • the common support carrying at least the cleaning nozzle and the burner
  • the relative displacement means comprise a mobile robot arm, the common support being carried by the movable arm so as to be movable in a scanning movement of the surface to be treated by the cleaning jet and the flame;
  • the relative displacement means comprise means for moving the object to be treated with respect to the common support
  • the common support carries a nozzle, called separation, forming the separation jet
  • the cleaning nozzle comprises a cleaning jet emission orifice oriented with respect to a burner flame emission orifice so that the cleaning jet and the flame are directed along divergent respective axes;
  • the common support carries a plurality of cleaning nozzles each forming a cleaning jet
  • the cleaning nozzles are arranged in at least two rows, the cleaning nozzles of one row being offset longitudinally with respect to the nozzles of the other row;
  • the cleaning nozzles each emit a cleaning jet having a divergent shape of oblong section, the cleaning jets being aligned
  • the large diameters of the oblong jets being inclined relative to a scanning direction of the surface to be treated or being substantially collinear and perpendicular to this scanning direction, the adjacent cleaning jets partially overlapping in the latter case;
  • the cleaning nozzle comprises at least two emission ports of the cleaning jet forming jet.
  • the cleaning nozzle includes
  • a nozzle for ejecting the cleaning jet having an outline emission orifice preferably of generally oblong shape
  • the common support carries a plurality of cleaning nozzles disposed on either side of the burner.
  • the installation comprises at least one inactivation means for inactivating at least one of the cleaning nozzles.
  • the inactivation means makes it possible to inactivate all the cleaning nozzles except the cleaning nozzle located upstream of the flame.
  • Figure 1 is a schematic view of a treatment plant of a surface of a polymer object, according to a first embodiment of the invention
  • Figure 2 is a schematic view of a possible arrangement of cleaning nozzles capable of being carried by a common support of the installation shown in Figure 1;
  • Figure 3 is an alternative arrangement of the cleaning nozzle and the burner carried by a common support of the installation shown in Figure 1;
  • Figure 4 is a longitudinal sectional view of a cleaning nozzle may be carried by a common support of the installation shown in Figure 1;
  • Figure 5 is a view along arrow V of Figure 4.
  • FIG. 6 is a diagrammatic view of one of the cleaning jet emitted by the nozzle shown in FIGS. 4 and 5, this cleaning jet being considered at the level of FIG. surface to be treated;
  • Figures 7 and 8 are sectional views respectively along the lines VII-VII and VIII-VIII of Figures 4 and 5;
  • FIG. 9 is a schematic view of a set of cleaning jets, considered at the surface to be treated, formed by a possible arrangement of cleaning nozzles such as that shown in FIGS. 4 to 8, these cleaning nozzles being may be carried by a common support of the installation shown in Figure 1.
  • FIG. 1 shows a plant 10 for treating a surface S of an object 12 made of polymer, in particular polypropylene.
  • This object 12 is for example a piece for a motor vehicle, in particular a bodywork part, for example, a bumper skin, a wing, a door panel, a hood, a tailgate, a roof or a spoiler.
  • the installation 10 comprises at least one cleaning nozzle 14, intended to form a cleaning jet of the surface S to be treated, and a burner 16, intended to form a flame and to apply this flame on the surface S to be treated.
  • the cleaning nozzle 14 and the burner 16 are carried by a common support 18 and comprise, respectively, a cleaning jet emission orifice 14E and a flame emission orifice 16E.
  • the cleaning jet comprises carbon dioxide, preferably in the form of particles, in particular in the form of snow or flakes, the size of the particles being adapted to the polymer of the surface to be cleaned.
  • the flame is produced by burning a mixture of gas and air.
  • the gas comprises a component chosen, preferably, from propane, propane depropylene, methane, butane or town gas.
  • the amount of air in the mixture of gas and air is such that the air is in excess in the mixture relative to the stoichiometric conditions of the combustion (oxidizing mode), this excess being between 0 and 15 %, preferably between 0 and 10%, relative to the stoichiometric proportion of air.
  • the flame thus has an oxidizing action.
  • the mixture of gas and air is such that the air is deficient in the mixture with respect to the stoichiometric conditions of combustion, to obtain a reducing action of the flame.
  • the installation 10 further comprises means for relative displacement of the common support 18 with respect to the surface S of the object to be treated.
  • the relative displacement means comprise a polyarticulate device, for example a mobile robot arm 20 carrying the common support 18.
  • the common support 18 is connected to the robot arm 20 by a hinge 21 .
  • the arm 20 carries the common support 18 so as to be able to move this support 18 in a scanning movement of the surface S to be treated by a cleaning jet and a flame emitted respectively by the cleaning nozzle 14 and the burner 16.
  • the means of relative displacement of the common support 18 with respect to the surface S to be treated may comprise means for moving the object 12 to be treated with respect to the common support 18 which is fixed.
  • the means for relative displacement of the common support 18 with respect to the surface S to be treated may comprise first moving means of the object 12 to be treated (for example a treadmill) and second means for moving the common support 18 (for example a robot arm).
  • the installation 10 comprises a nozzle 22, called separation , intended to form a separation jet interposed between the cleaning jet and the flame.
  • the common support 18 carries a plurality of cleaning nozzles 14 each forming an individual cleaning jet as in the example illustrated in FIGS. 1 and 2. More particularly, FIG. 2 illustrates a possible arrangement of these cleaning nozzles. to form, by juxtaposition of individual cleaning jets, a global cleaning jet of overall section of oblong overall shape, well adapted to optimize the scanning of the surface S to be treated.
  • FIG. 2 illustrates emission ports 14E for cleaning jets of several cleaning nozzles 14 arranged in at least two rows so that the cleaning nozzles 14 or emission ports 14E of a row are offset longitudinally by relative to the cleaning nozzles 14 or 14E emission ports of the other row.
  • each cleaning nozzle 14, the burner 16 and, if appropriate, the separation nozzle 22, are carried by the common support 18 being arranged in a relatively small space so that the support 18 carrying the cleaning nozzle 14, the burner 16 and, if appropriate, the separation nozzle 22, forms a relatively compact assembly for treating a relatively complex surface S having, in particular, relatively unobstructed and inaccessible parts.
  • the distance D1 measured substantially at the emission orifices 14E, 16E, between the axes 14X, 16X of the emission orifices 14E, 16E of each cleaning jet and the flame is between 2 and 10 cm.
  • the support 18 is intended to move to the right of the surface to be treated S in a direction and direction of scanning indicated by the arrow F in FIG. 1, so that, simultaneously, a first zone of the surface to be treated S is subjected to carbon dioxide sputtering and a second area of the surface to be treated S is subjected to the application flame, each area of the surface to be treated S is first subjected to the projection of carbon dioxide and then to the application of the flame.
  • the cleaning nozzles 14 are distributed along a dimension D2 (see FIG. 2) transverse to the arrow F, thus to the scanning direction, imposing a width L of the zone Z of surface S treated (see FIG. the support 18 moves along the arrow F.
  • D2 is between 5 and 20 cm.
  • the separation jet makes it possible to effectively avoid the undesirable interaction between the cleaning jet emitted by the nozzle 14 and the flame emitted by the burner 16.
  • each cleaning nozzle 14 and the burner 16 may be arranged in such a way that the axes 14X, 16X of the emission orifices 14E, 16E of the cleaning jet and the flame, diverge in forming an angle A between them, preferably between 0 and 20 °.
  • the discharge orifice 14E of the cleaning jet of the nozzle 14 is oriented with respect to the orifice 16E of emission of the flame of the burner 16 so that the cleaning jet and the flame are directed along respective divergent axes. substantially coinciding with the axes 14X, 16X of the emission ports 14E, 16E.
  • each cleaning nozzle 14 and of the burner 16 on the support 18 makes it possible to avoid, if necessary, resorting to a separation jet avoiding the undesirable interactions between the cleaning jet and the flame. .
  • FIGS. 4 to 8 an advantageous embodiment of a cleaning nozzle 14 is shown.
  • this cleaning nozzle 14 makes it possible to form a cleaning jet having a divergent shape of oblong section, well adapted to optimize the scanning of the surface S to be treated.
  • the cleaning nozzle 14 comprises an inlet 24 of carbon dioxide in the liquid state and a first inlet 26 of air. These inlets 24, 26 communicate with a chamber 28 for relaxing carbon dioxide and mixing air with carbon dioxide.
  • the nozzle 14 comprises isolation valve means between the chamber 28 and the inlet 24 of liquid carbon dioxide.
  • isolation means comprise a needle 30 which is movable between an open position, putting in communication the arrival 24 of carbon dioxide and the chamber 28, as shown in FIGS. 4 and 7, and a position d Isolation of the chamber 28 from the arrival 24 of carbon dioxide.
  • the expansion and mixing chamber 28 communicates with an ejection nozzle 32 of the cleaning jet, preferably a Laval nozzle, comprising carbon dioxide which, after passing through the chamber 28, is in the form of particles, especially in the form of snow or flakes.
  • the section of the nozzle 32 evolves, from upstream to downstream, from a circular section to a preferably oblong section of perimeter greater than the circular section.
  • the downstream end of the nozzle 32 forms the emission orifice 14E of the cleaning jet.
  • This emission orifice 14E has a contour of generally oblong shape, as can be seen in particular in FIGS. 5 and 8.
  • the cleaning nozzle 14 comprises a second air inlet 34, for example of generally annular shape, which opens into two holes 34E arranged substantially diametrically opposite to the most large dimension of the orifice 14E emission cleaning jet.
  • the two orifices 34E thus emit two jets for shaping the cleaning jet making it possible to obtain, at the level of the surface to be treated, a jet J of cleaning of substantially oblong cross-section as represented in FIG.
  • the common support 18 carries a plurality of cleaning nozzles 14 such as that illustrated in FIGS. 4 to 8, each forming an individual cleaning jet oblong J as in the example illustrated in FIG. 9.
  • This FIG. effect a set of cleaning jets J aligned, these jets J being considered at the surface to be treated S and formed by an arrangement of cleaning nozzles such as that shown in Figures 4 to 8.
  • the large diameters of Oblong jets J are inclined relative to the scanning direction F in order to optimize the distribution of carbon dioxide over the zone Z of treated surface.
  • the common support 18 carries a plurality of cleaning nozzles 14 such as that illustrated in Figures 4 to 8, each forming an individual oblong cleaning jet, the large diameters of the oblong jets being substantially collinear and perpendicular to the direction F scanning, the adjacent cleaning jets overlapping partially.
  • the installation 10 described above makes it possible to implement a method for treating the surface S of the object 12 according to the invention.
  • the cleaning jet, and therefore the carbon dioxide that it contains is sprayed, and the flame is applied to the surface S to be treated so that, simultaneously, a first zone of the surface to be treated S is subjected to the carbon dioxide projection and a second zone of the surface to be treated S is subjected to the application of the flame, each zone of the surface to be treated S being subjected first to the projection of carbon dioxide and then apply the flame.
  • the support 18, carried by the robot arm 20, can be moved by this next arm a scanning movement to the right of the surface S to be treated.
  • the simultaneous activation of the cleaning nozzle 14 and the burner 16, carried by the common support 18, makes it possible, during the movement of this support 18, to sweep the surface S simultaneously with the cleaning jet and the flame, this avoiding any pollution of the surface S between the projection of the cleaning jet and the application of the flame because these operations are performed simultaneously.
  • the separation jet comprising air is sprayed between the cleaning jet and the flame.
  • the air emitted by the separation nozzle 22 is ionized to further eliminate the risk of pollution of the surface S to be treated.
  • the air contained in the shaping jets may be ionized, for, as in the case of the jet air, separation, remove further risks of pollution of the surface S to be treated.
  • this surface is coated with paint or glue.
  • the glue coating makes it possible in particular to glue a polymer part on the treated surface, for example a polymer skin.
  • the common support 18 carries at least two cleaning nozzles 14, located on either side of the burner 16, to obtain a bidirectional tool.
  • the common support 18 is unidirectional because the surface must be cleaned before flaming.
  • the common support 18 can not move back, otherwise the flaming would take place before cleaning.
  • the trajectory of the common support 18 makes it possible to no longer have to go back and forth accompanied by additional movements (to redirect the support in the cleaning / flaming direction ) of the robot arm carrying the common support 18.
  • This simplified path allows a saving of cycle time.
  • the burner 16 is surrounded by a plurality of cleaning nozzles 14, so as to allow up to 360 ° displacement of the common support 18, without additional movement of the robot arm.
  • At least one inactivating means makes it possible to inactivate at least one cleaning nozzle 14.
  • the inactivating means makes it possible to deactivate all the nozzles except one, according to the path chosen for the common support 18.
  • the cleaning nozzle remaining active is the nozzle located upstream (relative to the direction of movement of the common support 18) flaming.
  • the inactivating means is a valve for shutting off the DC supply of cleaning nozzles 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

This method involves: - spraying a cleaning jet comprising carbon dioxide onto the surface (S) to be treated, the carbon dioxide preferably being in the form of particles, in particular in the form of snow or powder, and - applying a flame to the surface (S) to be treated, such that, simultaneously, a first area of the surface to be treated is subjected to the spray of carbon dioxide and a second area of the surface to be treated is subjected to the application of the flame, each area of the surface to be treated being subjected first to the spray of carbon dioxide, then to the application of the flame. Preferably, the cleaning jet is formed by means of a cleaning nozzle (14) and the flame is formed by means of a burner (16), the cleaning nozzle (14) and the burner (16) being carried by a common support (18).

Description

Procédé et installation de traitement d'une surface d'un objet en polymère  Method and installation for treating a surface of a polymer object
La présente invention concerne le domaine technique du traitement d'une surface d'un objet en polymère, plus particulièrement d'une surface d'une pièce pour véhicule automobile, notamment une pièce de carrosserie. The present invention relates to the technical field of the treatment of a surface of a polymer object, more particularly of a surface of a part for a motor vehicle, in particular a bodywork part.
Une pièce pour véhicule automobile, notamment une pièce de carrosserie, participant à l'aspect esthétique d'un véhicule, est généralement revêtue de peinture. Par ailleurs, une pièce pour véhicule automobile, notamment une pièce de carrosserie, peut être revêtue de colle en particulier pour être recouverte par une pièce d'aspect telle qu'une peau ou un béquet de hayon.  Part for a motor vehicle, including a body part, participating in the aesthetic appearance of a vehicle, is usually coated with paint. Moreover, a piece for a motor vehicle, in particular a bodywork part, may be coated with glue, in particular to be covered by a part of appearance such as a skin or a spoiler tailgate.
Lorsqu'une pièce telle qu'évoquée ci-dessus est en polymère, notamment en polymère thermoplastique, par exemple en polypropylène (PP), en polyamide (PA), en acrylobutadiène styrène (ABS), ou en mélange d'acrylobutadiène styrène et de polycarbonate (ABS/PC), ou encore en polymère thermodurcissable, par exemple en SMC (conformément au sigle anglais pour Sheet Moulding Compound) ou en époxy (EP), il convient, avant de la revêtir de peinture ou de colle, de nettoyer et de traiter sa surface à revêtir pour qu'elle présente des caractéristiques de propreté et d'aptitude à l'adhérence du revêtement souhaitées. Ces caractéristiques garantissent un bon aspect et un bon accrochage du revêtement sur la surface.  When a part as mentioned above is made of polymer, in particular thermoplastic polymer, for example polypropylene (PP), polyamide (PA), acrylobutadiene styrene (ABS), or a mixture of acrylobutadiene styrene and polycarbonate (ABS / PC), or in thermosetting polymer, for example in SMC (according to the acronym for Sheet Molding Compound) or in epoxy (EP), it is advisable, before coating it with paint or glue, to clean and treating the surface to be coated to provide desired cleanliness and adhesion properties of the coating. These characteristics ensure a good appearance and a good adhesion of the coating on the surface.
On connaît déjà dans l'état de la technique, notamment d'après WO 2008/151772, un procédé de traitement d'une surface d'un objet en polymère, du type dans lequel :  Already known in the state of the art, in particular according to WO 2008/151772, a method of treating a surface of a polymer object, of the type in which:
on projette au moins un jet de nettoyage comprenant du dioxyde de carbone sur la surface à traiter, et  projecting at least one cleaning jet comprising carbon dioxide on the surface to be treated, and
on applique une flamme sur la surface à traiter.  a flame is applied to the surface to be treated.
Le dioxyde de carbone contenu dans le jet de nettoyage est habituellement à l'état de particules, en général à l'état de neige ou de paillettes, la taille des particules étant adaptée au polymère et à la surface à nettoyer.  The carbon dioxide contained in the cleaning jet is usually in the form of particles, usually in the form of snow or flakes, the size of the particles being adapted to the polymer and the surface to be cleaned.
L'application de la flamme optimise la tension de surface et l'adhérence de la peinture ou de la colle déposée ultérieurement sur la surface. En effet, la flamme (qui peut atteindre 1 800 °C) permet le développement de radicaux très réactfs et, ainsi, de fonctions polaires à la surface de l'objet traité favorisant les interactions avec le revêtement appliqué sur la surface. On notera que la flamme a aussi pour effet de diminuer l'électricité statique de la surface traitée.  The application of the flame optimizes the surface tension and the adhesion of the subsequently deposited paint or adhesive to the surface. Indeed, the flame (which can reach 1800 ° C) allows the development of highly reactive radicals and, thus, polar functions on the surface of the treated object promoting interactions with the coating applied to the surface. It should be noted that the flame also has the effect of reducing the static electricity of the treated surface.
WO 2008/151772 propose de réaliser la projection du jet de nettoyage et l'application de la flamme dans une même enceinte mais en deux étapes successives. L'étape d'application de la flamme est donc réalisée après l'étape de projection du jet de nettoyage. Il faut donc, avant de pouvoir revêtir la surface de peinture ou de colle, attendre le temps nécessaire pour que ces deux étapes soient achevées. L'invention a notamment pour but d'optimiser le temps de préparation de la surface à revêtir d'un objet en polymère, c'est-à-dire la durée totale de réalisation de la projection du jet de nettoyage et de l'application de la flamme, ceci sans nuire à la qualité du résultat obtenu. WO 2008/151772 proposes to perform the projection of the cleaning jet and the application of the flame in the same enclosure but in two successive steps. The flame application step is therefore carried out after the step of spraying the cleaning jet. It is therefore necessary, before being able to coat the surface of paint or glue, to wait the necessary time for these two stages to be completed. The object of the invention is in particular to optimize the preparation time of the surface to be coated with a polymer article, ie the total duration of the projection of the cleaning jet and the application of the flame, without affecting the quality of the result obtained.
À cet effet, l'invention a pour objet un procédé de traitement d'une surface d'un objet en polymère, notamment en polypropylène, par exemple une pièce pour véhicule automobile, notamment une pièce de carrosserie, ce procédé étant du type dans lequel :  To this end, the subject of the invention is a process for treating a surface of a polymer article, in particular polypropylene, for example a part for a motor vehicle, in particular a bodywork part, this method being of the type in which :
on projette au moins un jet, dit jet de nettoyage, comprenant du dioxyde de carbone sur la surface à traiter, le dioxyde de carbone contenu dans le jet de nettoyage étant de préférence à l'état de particules, notamment à l'état de neige ou de paillettes, et  at least one jet is sprayed, said cleaning jet, comprising carbon dioxide on the surface to be treated, the carbon dioxide contained in the cleaning jet being preferably in the form of particles, especially in the state of snow or glitter, and
on applique une flamme sur la surface à traiter,  a flame is applied to the surface to be treated,
caractérisé en ce que l'on projette le dioxyde de carbone et l'on applique la flamme sur la surface à traiter de façon que, simultanément, une première zone de la surface à traiter est soumise à la projection de dioxyde de carbone et une seconde zone de la surface à traiter est soumise à l'application de la flamme, chaque zone de la surface à traiter étant soumise d'abord à la projection de dioxyde de carbone puis à l'application de la flamme.  characterized in that the carbon dioxide is sprayed and the flame is applied to the surface to be treated so that, simultaneously, a first zone of the surface to be treated is subjected to the carbon dioxide projection and a second The area of the surface to be treated is subjected to the application of the flame, each area of the surface to be treated being subjected first to the carbon dioxide projection and then to the application of the flame.
La projection du jet de nettoyage et l'application de la flamme étant réalisées simultanément sur l'objet à traiter, on optimise le temps de préparation de la surface à revêtir de l'objet en polymère.  The projection of the cleaning jet and the application of the flame being carried out simultaneously on the object to be treated, optimizes the preparation time of the surface to be coated with the polymer object.
Ainsi l'invention permet, le cas échéant, de réduire le temps de préparation de la surface à revêtir d'environ la moitié par rapport au temps de préparation habituel dans l'état de la technique.  Thus, the invention makes it possible, if necessary, to reduce the preparation time of the surface to be coated by approximately half compared to the usual preparation time in the state of the art.
Par ailleurs, on a pu observer qu'en réalisant simultanément la projection du jet de nettoyage et l'application de la flamme, on ne dégrade pas la qualité du résultat obtenu par rapport à un procédé classique en deux étapes, voire on améliore cette qualité. En effet, la surface traitée n'est soumise à aucune pollution entre la projection du jet de nettoyage et l'application de la flamme car ces opérations sont réalisées simultanément.  Moreover, it has been observed that by simultaneously producing the projection of the cleaning jet and the application of the flame, the quality of the result obtained is not degraded compared to a conventional two-step process, or even this quality is improved. . Indeed, the treated surface is not subject to any pollution between the projection of the cleaning jet and the application of the flame because these operations are performed simultaneously.
Suivant d'autres caractéristiques optionnelles de ce procédé :  According to other optional features of this method:
- le jet de nettoyage est formé au moyen d'une buse, dite buse de nettoyage, et la flamme est formée au moyen d'un brûleur, la buse de nettoyage et le brûleur étant portés par un support commun ;  - The cleaning jet is formed by means of a nozzle, said cleaning nozzle, and the flame is formed by means of a burner, the cleaning nozzle and the burner being carried by a common support;
la flamme est réalisée par combustion d'un mélange de gaz et d'air, le gaz comprenant un composant choisi, de préférence, parmi le propane, le propane dépropyléné, le méthane, le butane ou le gaz de ville, le mélange de gaz et d'air étant de préférence tel que l'air est en excès dans le mélange par rapport aux conditions stœchiométriques de la combustion pour obtenir une action oxydante de la flamme, cet excès étant compris entre 0 et 15%, de préférence entre 0 et 10%, par rapport à la proportion stœchiométrique de l'air, ou bien le mélange de gaz et d'air étant tel que l'air est en déficit dans le mélange par rapport aux conditions stœchiométriques de la combustion pour obtenir une action réductrice de la flamme ; the flame is produced by combustion of a mixture of gas and air, the gas comprising a component chosen, preferably, from propane, propane depropylene, methane, butane or town gas, the gas mixture and air being preferably such that the air is in excess in the mixture with respect to the stoichiometric conditions of the combustion to obtain an oxidizing action of the flame, this excess being between 0 and 15%, preferably between 0 and 10%, relative to the stoichiometric proportion of the air, or the mixture of gas and air being such that the air is deficient in the mixing with the stoichiometric conditions of the combustion to obtain a reducing action of the flame;
- on projette, entre le jet de nettoyage et la flamme, un jet de séparation comprenant de l'air, de préférence ionisé ;  a separation jet comprising air, preferably ionized, is sprayed between the cleaning jet and the flame;
le jet de nettoyage a une forme divergente de section oblongue, au moins un jet d'air, dit jet de mise en forme, de préférence ionisé, participant à la mise en forme du jet de nettoyage ;  the cleaning jet has a divergent shape of oblong section, at least one jet of air, said jet formatting, preferably ionized, participating in shaping the cleaning jet;
- après avoir projeté le dioxyde de carbone et appliqué la flamme simultanément sur la surface à traiter, on revêt cette surface de peinture ou de colle.  after having projected the carbon dioxide and applied the flame simultaneously to the surface to be treated, this surface is coated with paint or glue.
L'invention a également pour objet une installation de traitement d'une surface d'un objet en polymère, notamment en polypropylène, pour la mise en œuvre du procédé défini plus haut, caractérisée en ce qu'elle comprend :  The subject of the invention is also an installation for treating a surface of a polymer article, in particular polypropylene, for the implementation of the method defined above, characterized in that it comprises:
- le support commun portant au moins la buse de nettoyage et le brûleur, et  the common support carrying at least the cleaning nozzle and the burner, and
des moyens de déplacement relatif du support commun par rapport à la surface de l'objet à traiter.  means for relative displacement of the common support relative to the surface of the object to be treated.
Suivant d'autres caractéristiques optionnelles de cette installation :  According to other optional features of this installation:
les moyens de déplacement relatif comprennent un bras mobile de robot, le support commun étant porté par ce bras mobile de façon à pouvoir être déplacé suivant un mouvement de balayage de la surface à traiter par le jet de nettoyage et la flamme ;  the relative displacement means comprise a mobile robot arm, the common support being carried by the movable arm so as to be movable in a scanning movement of the surface to be treated by the cleaning jet and the flame;
les moyens de déplacement relatif comprennent des moyens de déplacement de l'objet à traiter par rapport au support commun ;  the relative displacement means comprise means for moving the object to be treated with respect to the common support;
- le support commun porte une buse, dite de séparation, de formation du jet de séparation ;  the common support carries a nozzle, called separation, forming the separation jet;
la buse de nettoyage comporte un orifice d'émission du jet de nettoyage orienté par rapport à un orifice d'émission de la flamme du brûleur de façon que le jet de nettoyage et la flamme soient dirigés suivant des axes respectifs divergents ;  the cleaning nozzle comprises a cleaning jet emission orifice oriented with respect to a burner flame emission orifice so that the cleaning jet and the flame are directed along divergent respective axes;
- le support commun porte plusieurs buses de nettoyage formant chacune un jet de nettoyage ;  the common support carries a plurality of cleaning nozzles each forming a cleaning jet;
les buses de nettoyage sont disposées en au moins deux rangées, les buses de nettoyage d'une rangée étant décalées longitudinalement par rapport aux buses de l'autre rangée ;  the cleaning nozzles are arranged in at least two rows, the cleaning nozzles of one row being offset longitudinally with respect to the nozzles of the other row;
- les buses de nettoyage émettent chacune un jet de nettoyage ayant une forme divergente de section oblongue, les jets de nettoyage étant alignés, the cleaning nozzles each emit a cleaning jet having a divergent shape of oblong section, the cleaning jets being aligned,
les grands diamètres des jets oblongs étant inclinés par rapport à une direction de balayage de la surface à traiter ou étant sensiblement colinéaires et perpendiculaires à cette direction de balayage, les jets de nettoyage adjacents se recouvrant partiellement dans ce dernier cas ;  the large diameters of the oblong jets being inclined relative to a scanning direction of the surface to be treated or being substantially collinear and perpendicular to this scanning direction, the adjacent cleaning jets partially overlapping in the latter case;
la buse de nettoyage comprend au moins deux orifices d'émission du jet de mise en forme du jet de nettoyage.  the cleaning nozzle comprises at least two emission ports of the cleaning jet forming jet.
la buse de nettoyage comprend  the cleaning nozzle includes
o une tuyère d'éjection du jet de nettoyage ayant un orifice d'émission de contour de préférence de forme générale oblongue, et  a nozzle for ejecting the cleaning jet having an outline emission orifice preferably of generally oblong shape, and
o deux orifices émettant chacun un jet de mise en forme du jet de nettoyage, agencés de façon sensiblement diamétralement opposée par rapport à l'orifice d'émission de la tuyère, c'est-à-dire par rapport à la plus grande dimension de l'orifice d'émission du jet de nettoyage lorsque cet orifice d'émission (14E) à un contour de forme générale oblongue.  two orifices each emitting a cleaning jet shaping jet, arranged substantially diametrically opposite to the emission orifice of the nozzle, that is to say with respect to the largest dimension of the nozzle; the emission orifice of the cleaning jet when this emission orifice (14E) has a contour of oblong general shape.
Selon un autre mode de réalisation, le support commun porte plusieurs buses de nettoyage disposées de part et d'autre du brûleur. De façon avantageuse, l'installation comporte au moins un moyen d'inactivation permettant d'inactiver au moins une des buses de nettoyage. De préférence, le moyen d'inactivation permet d'inactiver toutes les buses de nettoyage sauf la buse de nettoyage située en amont du flammage.  According to another embodiment, the common support carries a plurality of cleaning nozzles disposed on either side of the burner. Advantageously, the installation comprises at least one inactivation means for inactivating at least one of the cleaning nozzles. Preferably, the inactivation means makes it possible to inactivate all the cleaning nozzles except the cleaning nozzle located upstream of the flame.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés dans lesquels : The invention will be better understood on reading the description which will follow, given solely by way of example, and with reference to the appended drawings in which:
la figure 1 est une vue schématique d'une installation de traitement d'une surface d'un objet en polymère, selon un premier mode de réalisation de l'invention ;  Figure 1 is a schematic view of a treatment plant of a surface of a polymer object, according to a first embodiment of the invention;
la figure 2 est une vue schématique d'un agencement possible de buses de nettoyage susceptibles d'être portées par un support commun de l'installation représentée sur la figure 1 ;  Figure 2 is a schematic view of a possible arrangement of cleaning nozzles capable of being carried by a common support of the installation shown in Figure 1;
la figure 3 est une variante d'agencement de la buse de nettoyage et du brûleur portés par un support commun de l'installation représentée sur la figure 1 ;  Figure 3 is an alternative arrangement of the cleaning nozzle and the burner carried by a common support of the installation shown in Figure 1;
la figure 4 est une vue en coupe longitudinale d'une buse de nettoyage susceptible d'être portée par un support commun de l'installation représentée sur la figure 1 ;  Figure 4 is a longitudinal sectional view of a cleaning nozzle may be carried by a common support of the installation shown in Figure 1;
la figure 5 est une vue suivant la flèche V de la figure 4 ;  Figure 5 is a view along arrow V of Figure 4;
- la figure 6 est une vue schématique d'une du jet de nettoyage émis par la buse représentée sur les figures 4 et 5, ce jet de nettoyage étant considéré au niveau de la surface à traiter; FIG. 6 is a diagrammatic view of one of the cleaning jet emitted by the nozzle shown in FIGS. 4 and 5, this cleaning jet being considered at the level of FIG. surface to be treated;
les figures 7 et 8 sont des vues en coupe suivant respectivement les lignes VII- VII et VIII-VIII des figures 4 et 5 ;  Figures 7 and 8 are sectional views respectively along the lines VII-VII and VIII-VIII of Figures 4 and 5;
la figure 9 est une vue schématique d'un ensemble de jets de nettoyage, considérés au niveau de la surface à traiter, formés par un agencement possible de buses de nettoyage telles que celle représentée sur les figures 4 à 8, ces buses de nettoyage étant susceptibles d'être portées par un support commun de l'installation représentée sur la figure 1 .  FIG. 9 is a schematic view of a set of cleaning jets, considered at the surface to be treated, formed by a possible arrangement of cleaning nozzles such as that shown in FIGS. 4 to 8, these cleaning nozzles being may be carried by a common support of the installation shown in Figure 1.
On a représenté sur la figure 1 une installation 10 de traitement d'une surface S d'un objet 12 en polymère, notamment en polypropylène. Cet objet 12 est par exemple une pièce pour véhicule automobile, notamment une pièce de carrosserie, par exemple, une peau de pare- chocs, une aile, un panneau de porte, un capot, un hayon, un toit ou un spoiler.  FIG. 1 shows a plant 10 for treating a surface S of an object 12 made of polymer, in particular polypropylene. This object 12 is for example a piece for a motor vehicle, in particular a bodywork part, for example, a bumper skin, a wing, a door panel, a hood, a tailgate, a roof or a spoiler.
L'installation 10 comprend au moins une buse de nettoyage 14, destinée à former un jet de nettoyage de la surface S à traiter, et un brûleur 16, destiné à former une flamme et appliquer cette flamme sur la surface S à traiter.  The installation 10 comprises at least one cleaning nozzle 14, intended to form a cleaning jet of the surface S to be treated, and a burner 16, intended to form a flame and to apply this flame on the surface S to be treated.
La buse de nettoyage 14 et le brûleur 16 sont portés par un support commun 18 et comportent, respectivement, un orifice 14E d'émission du jet de nettoyage et un orifice 16E d'émission de la flamme.  The cleaning nozzle 14 and the burner 16 are carried by a common support 18 and comprise, respectively, a cleaning jet emission orifice 14E and a flame emission orifice 16E.
De façon classique, le jet de nettoyage comprend du dioxyde de carbone de préférence à l'état de particules, notamment à l'état de neige ou de paillettes, la taille des particules étant adaptée au polymère de la surface à nettoyer.  In a conventional manner, the cleaning jet comprises carbon dioxide, preferably in the form of particles, in particular in the form of snow or flakes, the size of the particles being adapted to the polymer of the surface to be cleaned.
La flamme est réalisée par combustion d'un mélange de gaz et d'air. Le gaz comprend un composant choisi, de préférence, parmi le propane, le propane dépropyléné, le méthane, le butane ou le gaz de ville.  The flame is produced by burning a mixture of gas and air. The gas comprises a component chosen, preferably, from propane, propane depropylene, methane, butane or town gas.
De préférence, la quantité d'air dans le mélange de gaz et d'air est telle que l'air est en excès dans le mélange par rapport aux conditions stœchiométriques de la combustion (mode oxydant), cet excès étant compris entre 0 et 15%, de préférence entre 0 et 10%, par rapport à la proportion stœchiométrique de l'air. La flamme a ainsi une action oxydante.  Preferably, the amount of air in the mixture of gas and air is such that the air is in excess in the mixture relative to the stoichiometric conditions of the combustion (oxidizing mode), this excess being between 0 and 15 %, preferably between 0 and 10%, relative to the stoichiometric proportion of air. The flame thus has an oxidizing action.
En variante, le mélange de gaz et d'air est tel que l'air est en déficit dans le mélange par rapport aux conditions stœchiométriques de la combustion, pour obtenir une action réductrice de la flamme.  Alternatively, the mixture of gas and air is such that the air is deficient in the mixture with respect to the stoichiometric conditions of combustion, to obtain a reducing action of the flame.
L'installation 10 comprend de plus des moyens de déplacement relatif du support commun 18 par rapport à la surface S de l'objet à traiter.  The installation 10 further comprises means for relative displacement of the common support 18 with respect to the surface S of the object to be treated.
Dans le mode de réalisation représenté sur la figure 1 , les moyens de déplacement relatif comprennent un dispositif polyarticulé, par exemple un bras mobile de robot 20 portant le support commun 18. Le support commun 18 est relié au bras de robot 20 par une articulation 21 . Le bras 20 porte le support commun 18 de façon à pouvoir déplacer ce support 18 suivant un mouvement de balayage de la surface S à traiter par un jet de nettoyage et une flamme émis respectivement par la buse de nettoyage 14 et le brûleur 16. In the embodiment shown in FIG. 1, the relative displacement means comprise a polyarticulate device, for example a mobile robot arm 20 carrying the common support 18. The common support 18 is connected to the robot arm 20 by a hinge 21 . The arm 20 carries the common support 18 so as to be able to move this support 18 in a scanning movement of the surface S to be treated by a cleaning jet and a flame emitted respectively by the cleaning nozzle 14 and the burner 16.
Selon un mode de réalisation non représenté, les moyens de déplacement relatif du support commun 18 par rapport à la surface S à traiter peuvent comprendre des moyens de déplacement de l'objet 12 à traiter par rapport au support commun 18 qui est fixe.  According to an embodiment not shown, the means of relative displacement of the common support 18 with respect to the surface S to be treated may comprise means for moving the object 12 to be treated with respect to the common support 18 which is fixed.
Selon encore un mode de réalisation non représenté, les moyens de déplacement relatif du support commun 18 par rapport à la surface S à traiter peuvent comprendre des premiers moyens de déplacement de l'objet 12 à traiter (par exemple un tapis roulant) et des seconds moyens de déplacement du support commun 18 (par exemple un bras de robot).  According to another embodiment not shown, the means for relative displacement of the common support 18 with respect to the surface S to be treated may comprise first moving means of the object 12 to be treated (for example a treadmill) and second means for moving the common support 18 (for example a robot arm).
Pour éviter une interaction indésirable entre le jet de nettoyage émis par la buse 14 et la flamme émise par le brûleur 16, notamment pour éviter que le jet de nettoyage n'éteigne la flamme, l'installation 10 comporte une buse 22, dite de séparation, destinée à former un jet de séparation intercalé entre le jet de nettoyage et la flamme.  To avoid an undesirable interaction between the cleaning jet emitted by the nozzle 14 and the flame emitted by the burner 16, especially to prevent the cleaning jet from extinguishing the flame, the installation 10 comprises a nozzle 22, called separation , intended to form a separation jet interposed between the cleaning jet and the flame.
Le cas échéant, le support commun 18 porte plusieurs buses de nettoyage 14 formant chacune un jet individuel de nettoyage comme dans l'exemple illustré sur les figures 1 et 2. Plus particulièrement, la figure 2 illustre un agencement possible de ces buses de nettoyage 14 permettant de former, par juxtaposition de jets individuels de nettoyage, un jet de nettoyage global de section globale de forme générale oblongue, bien adaptée pour optimiser le balayage de la surface S à traiter. Ainsi, la figure 2 illustre des orifices d'émission 14E de jets de nettoyage de plusieurs buses de nettoyage 14 disposées en au moins deux rangées de façon que les buses de nettoyage 14 ou orifices d'émission 14E d'une rangée soient décalées longitudinalement par rapport aux buses de nettoyage 14 ou orifices d'émission 14E de l'autre rangée.  Where appropriate, the common support 18 carries a plurality of cleaning nozzles 14 each forming an individual cleaning jet as in the example illustrated in FIGS. 1 and 2. More particularly, FIG. 2 illustrates a possible arrangement of these cleaning nozzles. to form, by juxtaposition of individual cleaning jets, a global cleaning jet of overall section of oblong overall shape, well adapted to optimize the scanning of the surface S to be treated. Thus, FIG. 2 illustrates emission ports 14E for cleaning jets of several cleaning nozzles 14 arranged in at least two rows so that the cleaning nozzles 14 or emission ports 14E of a row are offset longitudinally by relative to the cleaning nozzles 14 or 14E emission ports of the other row.
Chaque buse de nettoyage 14, le brûleur 16 et, le cas échéant, la buse de séparation 22, sont portés par le support commun 18 en étant agencés dans un espace relativement restreint de façon que le support 18 portant la buse de nettoyage 14, le brûleur 16 et, le cas échéant, la buse de séparation 22, forme un ensemble relativement compact permettant de traiter une surface S de forme relativement complexe présentant, notamment, des parties relativement peu dégagées et peu accessibles. Pour atteindre cet objectif de compacité, de préférence, la distance D1 mesurée sensiblement au niveau des orifices d'émission 14E, 16E, entre les axes 14X, 16X des orifices d'émission 14E, 16E de chaque jet de nettoyage et de la flamme, est comprise entre 2 et 10 cm.  Each cleaning nozzle 14, the burner 16 and, if appropriate, the separation nozzle 22, are carried by the common support 18 being arranged in a relatively small space so that the support 18 carrying the cleaning nozzle 14, the burner 16 and, if appropriate, the separation nozzle 22, forms a relatively compact assembly for treating a relatively complex surface S having, in particular, relatively unobstructed and inaccessible parts. To achieve this compactness objective, preferably, the distance D1 measured substantially at the emission orifices 14E, 16E, between the axes 14X, 16X of the emission orifices 14E, 16E of each cleaning jet and the flame, is between 2 and 10 cm.
Le support 18 est destiné à se déplacer au droit de la surface à traiter S suivant une direction et un sens de balayage indiqués par la flèche F sur la figure 1 , de façon que, simultanément, une première zone de la surface à traiter S est soumise à la projection de dioxyde de carbone et une seconde zone de la surface à traiter S est soumise à l'application de la flamme, chaque zone de la surface à traiter S étant soumise d'abord à la projection de dioxyde de carbone puis à l'application de la flamme. The support 18 is intended to move to the right of the surface to be treated S in a direction and direction of scanning indicated by the arrow F in FIG. 1, so that, simultaneously, a first zone of the surface to be treated S is subjected to carbon dioxide sputtering and a second area of the surface to be treated S is subjected to the application flame, each area of the surface to be treated S is first subjected to the projection of carbon dioxide and then to the application of the flame.
Les buses de nettoyage 14 sont réparties le long d'une dimension D2 (voir figure 2) transversale à la flèche F, donc à la direction de balayage, imposant une largeur L de la zone Z de surface S traitée (voir figure 1 ) lorsque le support 18 se déplace suivant la flèche F. De préférence, D2 est comprise entre 5 et 20 cm.  The cleaning nozzles 14 are distributed along a dimension D2 (see FIG. 2) transverse to the arrow F, thus to the scanning direction, imposing a width L of the zone Z of surface S treated (see FIG. the support 18 moves along the arrow F. Preferably, D2 is between 5 and 20 cm.
Lorsque les orifices d'émission 14E, 16E du jet de nettoyage et de la flamme sont relativement rapprochés, le jet de séparation permet d'éviter efficacement l'interaction indésirable entre le jet de nettoyage émis par la buse 14 et la flamme émise par le brûleur 16.  When the emission orifices 14E, 16E of the cleaning jet and the flame are relatively close together, the separation jet makes it possible to effectively avoid the undesirable interaction between the cleaning jet emitted by the nozzle 14 and the flame emitted by the burner 16.
On notera que, sur la figure 1 , les axes 14X, 16X des orifices d'émission 14E, 16E de chaque jet de nettoyage et de la flamme sont sensiblement parallèles entre eux. En variante, comme représenté sur la figure 3, chaque buse de nettoyage 14 et le brûleur 16 peuvent être agencés de telle façon que les axes 14X, 16X des orifices d'émission 14E, 16E du jet de nettoyage et de la flamme, divergent en formant un angle A entre eux compris, de préférence, entre 0 et 20 ° . Ainsi, l'orifice 14E démission du jet de nettoyage de la buse 14 est orienté par rapport à l'orifice 16E d'émission de la flamme du brûleur 16 de façon que le jet de nettoyage et la flamme soient dirigés suivant des axes respectifs divergents coïncidant sensiblement avec les axes 14X, 16X des orifices d'émission 14E, 16E.  It will be noted that, in FIG. 1, the axes 14X, 16X of the emission orifices 14E, 16E of each cleaning jet and the flame are substantially parallel to one another. Alternatively, as shown in FIG. 3, each cleaning nozzle 14 and the burner 16 may be arranged in such a way that the axes 14X, 16X of the emission orifices 14E, 16E of the cleaning jet and the flame, diverge in forming an angle A between them, preferably between 0 and 20 °. Thus, the discharge orifice 14E of the cleaning jet of the nozzle 14 is oriented with respect to the orifice 16E of emission of the flame of the burner 16 so that the cleaning jet and the flame are directed along respective divergent axes. substantially coinciding with the axes 14X, 16X of the emission ports 14E, 16E.
L'agencement représenté sur la figure 3 de chaque buse de nettoyage 14 et du brûleur 16 sur le support 18 permet d'éviter, le cas échéant, de recourir à un jet de séparation évitant les interactions indésirables entre le jet de nettoyage et la flamme.  The arrangement shown in FIG. 3 of each cleaning nozzle 14 and of the burner 16 on the support 18 makes it possible to avoid, if necessary, resorting to a separation jet avoiding the undesirable interactions between the cleaning jet and the flame. .
Sur les figures 4 à 8, on a représenté un mode de réalisation avantageux d'une buse de nettoyage 14. En effet, cette buse de nettoyage 14 permet de former un jet de nettoyage ayant une forme divergente de section oblongue, bien adaptée pour optimiser le balayage de la surface S à traiter.  In FIGS. 4 to 8, an advantageous embodiment of a cleaning nozzle 14 is shown. In fact, this cleaning nozzle 14 makes it possible to form a cleaning jet having a divergent shape of oblong section, well adapted to optimize the scanning of the surface S to be treated.
En se référant notamment aux figures 4 et 7, on voit que la buse de nettoyage 14 comprend une arrivée 24 de dioxyde de carbone à l'état liquide et une première arrivée 26 d'air. Ces arrivées 24, 26 communiquent avec une chambre 28 de détente du dioxyde de carbone et de mélange de l'air avec le dioxyde de carbone.  Referring in particular to Figures 4 and 7, it is seen that the cleaning nozzle 14 comprises an inlet 24 of carbon dioxide in the liquid state and a first inlet 26 of air. These inlets 24, 26 communicate with a chamber 28 for relaxing carbon dioxide and mixing air with carbon dioxide.
De façon classique, la buse 14 comprend des moyens formant vanne d'isolement entre la chambre 28 et l'arrivée 24 de dioxyde de carbone liquide. Ces moyens d'isolement comportent un pointeau 30 qui est mobile entre une position ouverte, de mise en communication de l'arrivée 24 de dioxyde de carbone et de la chambre 28, telle que représentée sur les figures 4 et 7, et une position d'isolement de la chambre 28 par rapport à l'arrivée 24 de dioxyde de carbone.  Conventionally, the nozzle 14 comprises isolation valve means between the chamber 28 and the inlet 24 of liquid carbon dioxide. These isolation means comprise a needle 30 which is movable between an open position, putting in communication the arrival 24 of carbon dioxide and the chamber 28, as shown in FIGS. 4 and 7, and a position d Isolation of the chamber 28 from the arrival 24 of carbon dioxide.
La chambre 28 de détente et de mélange communique avec une tuyère 32 d'éjection du jet de nettoyage, de préférence une tuyère de Laval, comprenant le dioxyde de carbone qui, après passage dans la chambre 28, est à l'état de particules, notamment à l'état de neige ou de paillettes. La section de la tuyère 32 évolue, d'amont en aval, d'une section circulaire à une section de préférence oblongue de périmètre supérieur à la section circulaire. Ainsi, l'extrémité aval de la tuyère 32 forme l'orifice 14E d'émission du jet de nettoyage. Cet orifice d'émission 14E a un contour de forme générale oblongue comme on peut le voir notamment sur les figures 5 et 8. The expansion and mixing chamber 28 communicates with an ejection nozzle 32 of the cleaning jet, preferably a Laval nozzle, comprising carbon dioxide which, after passing through the chamber 28, is in the form of particles, especially in the form of snow or flakes. The section of the nozzle 32 evolves, from upstream to downstream, from a circular section to a preferably oblong section of perimeter greater than the circular section. Thus, the downstream end of the nozzle 32 forms the emission orifice 14E of the cleaning jet. This emission orifice 14E has a contour of generally oblong shape, as can be seen in particular in FIGS. 5 and 8.
La forme oblongue du jet de nettoyage est accentuée par deux jets d'air, dit jets de mise en forme, participant à la mise en forme du jet de nettoyage. Dans l'exemple illustré sur les figures 4 à 8, la buse de nettoyage 14 comprend une seconde arrivée d'air 34, par exemple de forme général annulaire, qui débouche dans deux orifices 34E agencés de façon sensiblement diamétralement opposée par rapport à la plus grande dimension de l'orifice 14E d'émission du jet de nettoyage. Les deux orifices 34E émettent donc deux jets de mise en forme du jet de nettoyage permettant d'obtenir, au niveau de la surface à traiter, un jet J de nettoyage de section sensiblement oblongue telle que représentée sur la figure 6.  The oblong shape of the cleaning jet is accentuated by two jets of air, called shaping jets, participating in the shaping of the cleaning jet. In the example illustrated in Figures 4 to 8, the cleaning nozzle 14 comprises a second air inlet 34, for example of generally annular shape, which opens into two holes 34E arranged substantially diametrically opposite to the most large dimension of the orifice 14E emission cleaning jet. The two orifices 34E thus emit two jets for shaping the cleaning jet making it possible to obtain, at the level of the surface to be treated, a jet J of cleaning of substantially oblong cross-section as represented in FIG.
Le cas échéant, le support commun 18 porte plusieurs buses de nettoyage 14 telles que celle illustrée sur les figures 4 à 8, formant chacune un jet individuel de nettoyage oblong J comme dans l'exemple illustré sur la figure 9. Cette figure 9 montre en effet un ensemble des jets de nettoyage J alignés, ces jets J étant considérés au niveau de la surface à traiter S et formés par un agencement de buses de nettoyage telles que celle représentée sur les figures 4 à 8. De préférence, les grands diamètres des jets oblongs J sont inclinés par rapport à la direction de balayage F afin d'optimiser la répartition du dioxyde de carbone sur la zone Z de surface traitée.  Where appropriate, the common support 18 carries a plurality of cleaning nozzles 14 such as that illustrated in FIGS. 4 to 8, each forming an individual cleaning jet oblong J as in the example illustrated in FIG. 9. This FIG. effect a set of cleaning jets J aligned, these jets J being considered at the surface to be treated S and formed by an arrangement of cleaning nozzles such as that shown in Figures 4 to 8. Preferably, the large diameters of Oblong jets J are inclined relative to the scanning direction F in order to optimize the distribution of carbon dioxide over the zone Z of treated surface.
Selon une variante non représentée, le support commun 18 porte plusieurs buses de nettoyage 14 telles que celle illustrée sur les figures 4 à 8, formant chacune un jet individuel de nettoyage oblong, les grands diamètres des jets oblongs étant sensiblement colinéaires et perpendiculaires à la direction de balayage F, les jets de nettoyage adjacents se recouvrant partiellement.  According to a variant not shown, the common support 18 carries a plurality of cleaning nozzles 14 such as that illustrated in Figures 4 to 8, each forming an individual oblong cleaning jet, the large diameters of the oblong jets being substantially collinear and perpendicular to the direction F scanning, the adjacent cleaning jets overlapping partially.
L'installation 10 décrite ci-dessus permet de mettre en œuvre un procédé de traitement de la surface S de l'objet 12 conforme à l'invention.  The installation 10 described above makes it possible to implement a method for treating the surface S of the object 12 according to the invention.
Ainsi, selon le procédé de l'invention, on projette le jet de nettoyage, et donc le dioxyde de carbone qu'il contient, et on applique la flamme sur la surface S à traiter de façon que, simultanément, une première zone de la surface à traiter S est soumise à la projection de dioxyde de carbone et une seconde zone de la surface à traiter S est soumise à l'application de la flamme, chaque zone de la surface à traiter S étant soumise d'abord à la projection de dioxyde de carbone puis à l'application de la flamme.  Thus, according to the method of the invention, the cleaning jet, and therefore the carbon dioxide that it contains, is sprayed, and the flame is applied to the surface S to be treated so that, simultaneously, a first zone of the surface to be treated S is subjected to the carbon dioxide projection and a second zone of the surface to be treated S is subjected to the application of the flame, each zone of the surface to be treated S being subjected first to the projection of carbon dioxide and then apply the flame.
En effet, le support 18, porté par le bras de robot 20, peut être déplacé par ce bras suivant un mouvement de balayage au droit de la surface S à traiter. L'activation simultanée de la buse de nettoyage 14 et du brûleur 16, portés par le support commun 18, permet, lors du mouvement de ce support 18, de balayer la surface S simultanément avec le jet de nettoyage et la flamme, ceci en évitant toute pollution de la surface S entre la projection du jet de nettoyage et l'application de la flamme car ces opérations sont réalisées simultanément. Indeed, the support 18, carried by the robot arm 20, can be moved by this next arm a scanning movement to the right of the surface S to be treated. The simultaneous activation of the cleaning nozzle 14 and the burner 16, carried by the common support 18, makes it possible, during the movement of this support 18, to sweep the surface S simultaneously with the cleaning jet and the flame, this avoiding any pollution of the surface S between the projection of the cleaning jet and the application of the flame because these operations are performed simultaneously.
Par ailleurs, en activant la buse de séparation 22, on projette, entre le jet de nettoyage et la flamme, le jet de séparation comprenant de l'air. Le cas échéant, l'air émis par la buse de séparation 22 est ionisé pour écarter encore davantage les risques de pollution de la surface S à traiter.  Furthermore, by activating the separation nozzle 22, the separation jet comprising air is sprayed between the cleaning jet and the flame. Where appropriate, the air emitted by the separation nozzle 22 is ionized to further eliminate the risk of pollution of the surface S to be treated.
Si l'on utilise une buse de nettoyage 14 telle que celle représentée sur les figures 4 à 8, l'air contenu dans les jets de mise en forme peut-être ionisé, pour, comme dans le cas de l'air du jet de séparation, écarter encore davantage les risques de pollution de la surface S à traiter.  If a cleaning nozzle 14 such as that shown in FIGS. 4 to 8 is used, the air contained in the shaping jets may be ionized, for, as in the case of the jet air, separation, remove further risks of pollution of the surface S to be treated.
Le cas échéant, après avoir projeté le dioxyde de carbone et appliqué la flamme simultanément sur la surface à traiter, on revêt cette surface de peinture ou de colle. Le revêtement de colle permet notamment de coller une pièce en polymère sur la surface traitée, par exemple une peau en polymère.  If necessary, after having projected the carbon dioxide and applied the flame simultaneously to the surface to be treated, this surface is coated with paint or glue. The glue coating makes it possible in particular to glue a polymer part on the treated surface, for example a polymer skin.
Selon un autre mode de réalisation non représenté, le support commun 18 porte au moins deux buses de nettoyage 14, situées de part et d'autre du brûleur 16, afin d'obtenir un outil bidirectionnel.  According to another embodiment not shown, the common support 18 carries at least two cleaning nozzles 14, located on either side of the burner 16, to obtain a bidirectional tool.
En effet, selon les autres modes de réalisation, le support commun 18 est unidirectionnel car la surface doit être nettoyée avant flammage. Le support commun 18 ne peut donc reculer, sinon le flammage aurait lieu avant le nettoyage.  Indeed, according to the other embodiments, the common support 18 is unidirectional because the surface must be cleaned before flaming. The common support 18 can not move back, otherwise the flaming would take place before cleaning.
En utilisant deux buses de nettoyage 14 de part et d'autre du brûleur 16, la trajectoire du support commun 18 permet de ne plus avoir à réaliser d'aller et retour accompagnés de mouvements supplémentaires (pour réorienter le support dans le sens nettoyage/flammage) du bras du robot portant le support commun 18.  By using two cleaning nozzles 14 on either side of the burner 16, the trajectory of the common support 18 makes it possible to no longer have to go back and forth accompanied by additional movements (to redirect the support in the cleaning / flaming direction ) of the robot arm carrying the common support 18.
Cette trajectoire simplifiée permet un gain de temps de cycle.  This simplified path allows a saving of cycle time.
Selon un autre mode de réalisation, le brûleur 16 est entouré de plusieurs buses de nettoyage 14, de façon à permettre un déplacement jusqu'à 360° du support commun 18, sans mouvement supplémentaire du bras du robot.  According to another embodiment, the burner 16 is surrounded by a plurality of cleaning nozzles 14, so as to allow up to 360 ° displacement of the common support 18, without additional movement of the robot arm.
Avantageusement, au moins un moyen d'inactivation permet d'inactiver au moins une buse de nettoyage 14. De préférence, le moyen d'inactivation permet de désactiver toutes les buses sauf une, en fonction de la trajectoire choisie pour le support commun 18. La buse de nettoyage restant active est la buse située en amont (relativement à la direction de déplacement du support commun 18) du flammage. Selon un exemple, le moyen d'inactivation est une vanne permettant de couper l'alimentation en CC^ de buses de nettoyage 14. Advantageously, at least one inactivating means makes it possible to inactivate at least one cleaning nozzle 14. Preferably, the inactivating means makes it possible to deactivate all the nozzles except one, according to the path chosen for the common support 18. The cleaning nozzle remaining active is the nozzle located upstream (relative to the direction of movement of the common support 18) flaming. In one example, the inactivating means is a valve for shutting off the DC supply of cleaning nozzles 14.
L'invention n'est pas limitée au mode de réalisation illustré sur les figures et d'autres modes de réalisation apparaîtront clairement à l'homme du métier. The invention is not limited to the embodiment illustrated in the figures and other embodiments will become apparent to those skilled in the art.

Claims

REVENDICATIONS
1 . Procédé de traitement d'une surface (S) d'un objet (12) en polymère, notamment en polypropylène, par exemple une pièce pour véhicule automobile, notamment une pièce de carrosserie, ce procédé étant du type dans lequel : 1. A method of treating a surface (S) of an object (12) made of polymer, in particular polypropylene, for example a motor vehicle part, in particular a bodywork part, this method being of the type in which:
on projette au moins un jet, dit jet de nettoyage, comprenant du dioxyde de carbone sur la surface (S) à traiter, le dioxyde de carbone contenu dans le jet de nettoyage étant de préférence à l'état de particules, notamment à l'état de neige ou de paillettes, et  at least one jet is sprayed, said cleaning jet, comprising carbon dioxide on the surface (S) to be treated, the carbon dioxide contained in the cleaning jet being preferably in the form of particles, in particular at the snow or glitter, and
- on applique une flamme sur la surface (S) à traiter,  a flame is applied to the surface (S) to be treated,
caractérisé en ce que l'on projette le dioxyde de carbone et l'on applique la flamme sur la surface (S) à traiter de façon que, simultanément, une première zone de la surface à traiter est soumise à la projection de dioxyde de carbone et une seconde zone de la surface à traiter est soumise à l'application de la flamme, chaque zone de la surface à traiter étant soumise d'abord à la projection de dioxyde de carbone puis à l'application de la flamme.  characterized in that the carbon dioxide is projected and the flame is applied to the surface (S) to be treated so that simultaneously a first zone of the surface to be treated is subjected to carbon dioxide spraying. and a second zone of the surface to be treated is subjected to the application of the flame, each zone of the surface to be treated being subjected first to the carbon dioxide projection and then to the application of the flame.
2. Procédé selon la revendication 1 , dans lequel le jet de nettoyage est formé au moyen d'une buse, dite buse de nettoyage (14), et la flamme est formée au moyen d'un brûleur (16), la buse de nettoyage (14) et le brûleur (16) étant portés par un support commun (18).  The method of claim 1, wherein the cleaning jet is formed by means of a nozzle, said cleaning nozzle (14), and the flame is formed by means of a burner (16), the cleaning nozzle (14) and the burner (16) being carried by a common support (18).
3. Procédé selon la revendication 1 ou 2, dans lequel la flamme est réalisée par combustion d'un mélange de gaz et d'air, le gaz comprenant un composant choisi, de préférence, parmi le propane, le propane dépropyléné, le méthane, le butane ou le gaz de ville, le mélange de gaz et d'air étant de préférence tel que l'air est en excès dans le mélange par rapport aux conditions stœchiométriques de la combustion pour obtenir une action oxydante de la flamme, cet excès étant compris entre 0 et 15%, de préférence entre 0 et 10%, par rapport à la proportion stœchiométrique de l'air, ou bien le mélange de gaz et d'air étant tel que l'air est en déficit dans le mélange par rapport aux conditions stœchiométriques de la combustion pour obtenir une action réductrice de la flamme.  3. Method according to claim 1 or 2, wherein the flame is produced by combustion of a mixture of gas and air, the gas comprising a component chosen, preferably, from propane, propane depropylene, methane, butane or town gas, the mixture of gas and air being preferably such that the air is in excess in the mixture with respect to the stoichiometric conditions of the combustion to obtain an oxidizing action of the flame, this excess being between 0 and 15%, preferably between 0 and 10%, relative to the stoichiometric proportion of air, or the mixture of gas and air being such that the air is deficient in the mixture relative to stoichiometric conditions of combustion to obtain a reducing action of the flame.
4. Procédé selon l'une quelconque des revendications précédentes, dans lequel on projette, entre le jet de nettoyage et la flamme, un jet de séparation comprenant de l'air, de préférence ionisé.  4. Method according to any one of the preceding claims, wherein is projected, between the cleaning jet and the flame, a separation jet comprising air, preferably ionized.
5. Procédé selon l'une quelconque des revendications précédentes, dans lequel le jet de nettoyage a une forme divergente de section oblongue, au moins un jet d'air, dit jet de mise en forme, de préférence ionisé, participant à la mise en forme du jet de nettoyage.  5. Method according to any one of the preceding claims, wherein the cleaning jet has a divergent shape of oblong section, at least one jet of air, said jet shaped, preferably ionized, participating in the implementation. shape of the cleaning jet.
6. Procédé selon l'une quelconque des revendications précédentes, dans lequel, après avoir projeté le dioxyde de carbone et appliqué la flamme simultanément sur la surface (S) à traiter, on revêt cette surface de peinture ou de colle.  6. Method according to any one of the preceding claims, wherein, after having projected the carbon dioxide and applied the flame simultaneously to the surface (S) to be treated, this surface is coated with paint or glue.
7. Installation de traitement d'une surface (S) d'un objet (12) en polymère, notamment en polypropylène, pour la mise en œuvre du procédé selon la revendication 2, caractérisée en ce qu'elle comprend : 7. Installation for treating a surface (S) of an object (12) made of polymer, in particular polypropylene, for carrying out the method according to claim 2, characterized in that it comprises:
le support commun (18) portant au moins la buse de nettoyage (14) et le brûleur (16), et  the common carrier (18) carrying at least the cleaning nozzle (14) and the burner (16), and
- des moyens de déplacement relatif (20) du support commun (18) par rapport à la surface (S) de l'objet à traiter.  - Relative displacement means (20) of the common support (18) relative to the surface (S) of the object to be treated.
8. Installation selon la revendication 7, dans laquelle les moyens de déplacement relatif comprennent un bras mobile de robot (20), le support commun (18) étant porté par ce bras mobile (20) de façon à pouvoir être déplacé suivant un mouvement de balayage de la surface (S) à traiter par le jet de nettoyage et la flamme.  8. Installation according to claim 7, wherein the relative displacement means comprise a mobile robot arm (20), the common carrier (18) being carried by the movable arm (20) so as to be movable in a movement of sweeping the surface (S) to be treated by the cleaning jet and the flame.
9. Installation selon la revendication 7, dans laquelle les moyens de déplacement relatif comprennent des moyens de déplacement de l'objet (12) à traiter par rapport au support commun (18), ce support commun étant lui-même éventuellement déplaçable.  9. Installation according to claim 7, wherein the relative displacement means comprise means for moving the object (12) to be treated relative to the common support (18), the common carrier being itself possibly movable.
10. Installation selon l'une quelconque des revendications 7 à 9, pour la mise en œuvre du procédé selon la revendication 4, dans laquelle le support commun (18) porte une buse, dite de séparation (22), de formation du jet de séparation.  10. Installation according to any one of claims 7 to 9 for the implementation of the method according to claim 4, wherein the common carrier (18) carries a nozzle, said separation (22), forming the jet of separation.
11 . Installation selon l'une quelconque des revendications 7 à 10, dans laquelle la buse de nettoyage (14) comporte un orifice (14E) d'émission du jet de nettoyage orienté par rapport à un orifice (16E) d'émission de la flamme du brûleur (16) de façon que le jet de nettoyage et la flamme soient dirigés suivant des axes respectifs divergents.  11. Installation according to any one of claims 7 to 10, wherein the cleaning nozzle (14) comprises a port (14E) for emission of the cleaning jet oriented with respect to a port (16E) for transmitting the flame of the burner (16) so that the cleaning jet and the flame are directed along divergent respective axes.
12. Installation selon l'une quelconque des revendications 7 à 11 , dans laquelle le support commun (18) porte plusieurs buses de nettoyage (14) formant chacune un jet de nettoyage.  12. Installation according to any one of claims 7 to 11, wherein the common carrier (18) carries a plurality of cleaning nozzles (14) each forming a cleaning jet.
13. Installation selon la revendication 12, dans laquelle les buses de nettoyage (14) sont disposées en au moins deux rangées, les buses de nettoyage (14) d'une rangée étant décalées longitudinalement par rapport aux buses de nettoyage (14) de l'autre rangée.  13. Installation according to claim 12, wherein the cleaning nozzles (14) are arranged in at least two rows, the cleaning nozzles (14) of a row being offset longitudinally with respect to the cleaning nozzles (14) of the other row.
14. Installation selon la revendication 12, dans laquelle les buses de nettoyage (14) émettent chacune un jet de nettoyage (J) ayant une forme divergente de section oblongue, les jets de nettoyage (J) étant alignés,  14. Installation according to claim 12, wherein the cleaning nozzles (14) each emit a cleaning jet (J) having a divergent shape of oblong section, the cleaning jets (J) being aligned,
les grands diamètres des jets oblongs (J) étant inclinés par rapport à une direction de balayage (F) de la surface (S) à traiter ou étant sensiblement colinéaires et perpendiculaires à cette direction de balayage (F), les jets de nettoyage adjacents se recouvrant partiellement dans ce dernier cas.  the large diameters of the oblong jets (J) being inclined with respect to a scanning direction (F) of the surface (S) to be treated or being substantially collinear and perpendicular to this scanning direction (F), the adjacent cleaning jets are overlapping partially in the latter case.
15. Installation selon l'une quelconque des revendications 7 à 14, pour la mise en œuvre du procédé selon la revendication 5, dans laquelle la buse de nettoyage (14) comprend au moins deux orifices (34E) d'émission du jet de mise en forme du jet de nettoyage.  15. Installation according to any one of claims 7 to 14 for the implementation of the method according to claim 5, wherein the cleaning nozzle (14) comprises at least two openings (34E) emission of the jet of bet in the form of the cleaning jet.
16. Installation selon la revendication 15, dans laquelle la buse de nettoyage (14) comprend une tuyère (32) d'éjection du jet de nettoyage ayant un orifice d'émission (14E) de contour de préférence de forme générale oblongue, et The plant of claim 15, wherein the cleaning nozzle (14) comprises a nozzle (32) for ejecting the cleaning jet having an emission orifice (14E) of contour, preferably of generally oblong shape, and
deux orifices (34E) émettant chacun un jet de mise en forme du jet de nettoyage, agencés de façon sensiblement diamétralement opposée par rapport à l'orifice d'émission (14E) de la tuyère (32), c'est-à-dire par rapport à la plus grande dimension de l'orifice d'émission (14E) du jet de nettoyage lorsque cet orifice d'émission (14E) à un contour de forme générale oblongue.  two orifices (34E) each emitting a cleaning jet forming jet, arranged substantially diametrically opposite to the emission orifice (14E) of the nozzle (32), that is to say relative to the largest dimension of the emission orifice (14E) of the cleaning jet when this emission orifice (14E) has a contour of oblong general shape.
17. Installation selon l'une quelconque des revendications 7 à 16, dans laquelle le support commun (18) porte plusieurs buses de nettoyage (14) disposées de part et d'autre du brûleur 16.  17. Installation according to any one of claims 7 to 16, wherein the common carrier (18) carries a plurality of cleaning nozzles (14) disposed on either side of the burner 16.
18. Installation selon la revendication 17, comportant au moins un moyen d'inactivation permettant d'inactiver au moins une des buses de nettoyage (14).  18. Installation according to claim 17, comprising at least one inactivation means for inactivating at least one of the cleaning nozzles (14).
19. Installation selon la revendication 18, dans laquelle le moyen d'inactivation permet d'inactiver toutes les buses de nettoyage (14) sauf la buse de nettoyage (14) située en amont du f lammage.  19. Installation according to claim 18, wherein the inactivating means makes it possible to inactivate all the cleaning nozzles (14) except the cleaning nozzle (14) located upstream of the ignition.
PCT/FR2014/051697 2013-07-03 2014-07-02 Method and facility for treating a surface of a polymer object WO2015001257A1 (en)

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FR1356519A FR3008004B1 (en) 2013-07-03 2013-07-03 METHOD AND INSTALLATION FOR TREATING A SURFACE OF A POLYMERIC OBJECT

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3395452A1 (en) * 2017-04-27 2018-10-31 KERAGLASS INDUSTRIES S.r.l. Machine and method for cleaning glass articles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20320640U1 (en) * 2002-02-18 2005-01-05 Nanon A/S Silicone rubber products
DE102007027618A1 (en) * 2007-06-12 2008-12-18 Rehau Ag + Co Process for the pretreatment of polymeric surfaces to be painted

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20320640U1 (en) * 2002-02-18 2005-01-05 Nanon A/S Silicone rubber products
DE102007027618A1 (en) * 2007-06-12 2008-12-18 Rehau Ag + Co Process for the pretreatment of polymeric surfaces to be painted

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FICHER S: "Optimal vorbehandeln", 1 January 2011, MO METALLOBERFLACHE, IGT INFORMATIONSGESELLSCHAFT TECHNIK, MUNCHEN, DE, PAGE(S) 32 - 33, ISSN: 0026-0797, XP001559927 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3395452A1 (en) * 2017-04-27 2018-10-31 KERAGLASS INDUSTRIES S.r.l. Machine and method for cleaning glass articles
US10961149B2 (en) 2017-04-27 2021-03-30 Keraglass Industries S.R.L. Machine and method for cleaning glass articles

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FR3008004A1 (en) 2015-01-09

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