EP3223966B1 - Procede et dispositif de revetement de la surface interne d'un recipient et recipient obtenu avec un tel procede - Google Patents

Procede et dispositif de revetement de la surface interne d'un recipient et recipient obtenu avec un tel procede Download PDF

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Publication number
EP3223966B1
EP3223966B1 EP15808745.2A EP15808745A EP3223966B1 EP 3223966 B1 EP3223966 B1 EP 3223966B1 EP 15808745 A EP15808745 A EP 15808745A EP 3223966 B1 EP3223966 B1 EP 3223966B1
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EP
European Patent Office
Prior art keywords
container
liquid
tool
coating
angle
Prior art date
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Active
Application number
EP15808745.2A
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German (de)
English (en)
French (fr)
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EP3223966A2 (fr
Inventor
Christophe Wagner
Antoine Bauvin
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.)
Glass Surface Technology SAS
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Glass Surface Technology SAS
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Publication of EP3223966A2 publication Critical patent/EP3223966A2/fr
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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
    • B05D7/22—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 internal surfaces, e.g. of tubes
    • B05D7/227—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 internal surfaces, e.g. of tubes of containers, cans or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
    • 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
    • B05D3/02—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 baking
    • 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
    • B05D3/02—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 baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • 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
    • B05D3/04—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 exposure to gases
    • B05D3/0406—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 exposure to gases the gas being air
    • B05D3/042—Directing or stopping the fluid to be coated with air

Definitions

  • the present invention relates to a method of coating with a curable liquid material at least a portion of the internal surface of a container elongated around an axis, suitable for containing products biocompatible with humans and / or animals. .
  • It also relates to a device implementing such a method and a container obtained with it.
  • coating process is meant the covering or surface affixing of a layer of material on the surface of an object formed of another material, in an integral and durable manner (that is to say more than several years) . Such a coating then modifies the surface, physical and / or chemical properties of this other material.
  • the invention finds a particularly important although not exclusive application in the field of the manufacture of bottles intended to receive and store food, pharmaceutical or cosmetic products.
  • neutral glass is understood to mean a glass which, over time, releases ions, by example of sodium ions or other alkaline and / or alkaline earth ions in very small quantity in the liquid or product which is inside the container.
  • very small quantity is meant a ratio between mass of the liquid contained and total mass of the extractable elements of less than 6 ppm.
  • Soda-lime glass is, for example, not neutral in the sense of the pharmacopoeia.
  • alkalinity can cause dangerous effects on a pharmaceutical product, due to unacceptable reactions that could occur between the glass wall and the product.
  • the sodium sulphate generated by such treatments (white veil on the internal surface of bottles) is then washed with water before filling the containers.
  • burrs and excess thicknesses are in particular greater at the junction between vertical and horizontal walls and are for example due to the formation of drops under the effect of gravitation during drying.
  • the present invention aims to provide a method, a device and a bottle obtained by such a method, meeting better than those previously known the requirements of practice, in particular in that it does not use harmful products to passivate or protect the inner wall of the bottle, in that it does not require aggressive treatment or compulsory rinsing before and / or after use and in that it allows the treatment of all types of containers, causing less breakage or damage than in the prior art and in that the geometry of the coating layer is obtained with great precision and excellent regularity both in thickness and in definition and / or resolution of the resulting pattern.
  • the invention proposes to reduce and / or better control the speed of runoff and / or flow of the coating liquid on the internal wall than with the methods of the prior art.
  • One of the objects of the present invention is therefore to implement these parameters with the above advantages mentioned and overcoming the drawbacks of the prior art.
  • the relative rotation can come either from the rotation of the container, the tool remaining fixed or from the rotation of the tool, the container remaining fixed or a mixture of the two.
  • curable liquid material is meant here a liquid material containing a solvent of which there remains after evaporation a solid and resistant residual fraction, of mechanical behavior close to that of plastic or glass.
  • the method according to the embodiment of the invention more particularly described here thus makes it possible to obtain a layer of regular shape and of homogeneous thickness, so that the resulting hydrolytic resistance of the container is sufficient to meet the standards at the date of filing of this application and corresponding to the particular pharmaceutical applications envisaged.
  • the hydrolytic resistance is measured before treatment, and after treatment, by determining the quantity of sodium oxide and other alkaline or alkaline earth oxides released during an autoclave treatment at 121 ° C. for 60 minutes, the measurements being for example then carried out in a manner known per se by flame spectrometry.
  • the invention also provides a device implementing the method as described above.
  • the invention also provides a device for coating at least a portion of the surface internal of a container elongated around an axis Oz, suitable for containing products biocompatible with humans and / or animals, by a curable liquid coating material comprising a support for receiving the container integral with the container, and a tool for applying said coating liquid to at least a portion of the internal surface of the container and means for supplying the liquid material at a determined flow rate D, characterized in that the support being arranged to tilt the container by a first angle ⁇ determined, the device comprises means for rotating the container and / or the tool around the axis Oz at a determined speed V, means for heating to a determined temperature of the container, means for insertion of the tool into the container, and in that it comprises calculation means arranged to control the speed V of the rotation means, the flow rate D of supply of the liquid, the determined temperature and the angle ⁇ support tilt , depending on the viscosity parameters ⁇ of the liquid at said determined temperature and the roughness R of the part of the surface of the container, so
  • the tool is a flexible and / or curved nozzle.
  • the tool is an extendable balloon.
  • the invention also provides a container obtained by the method described above.
  • the containers obtained have improved properties of their internal surface, in particular of their thermally insulating properties, as well as better aesthetics and greater capacity to protect their content compared to Ultraviolet radiation, due to a better filtering capacity of their wall.
  • the figure 1 shows a device 1 for coating at least a portion of the internal surface 2 of a container 3, according to the embodiment of the invention more particularly described here.
  • the container 3 is for example a cylindrical glass bottle elongated around an axis Oz. It has at one of its ends 4 (upper end in the case of the figure 1 ), an opening 5 in the neck.
  • the opening 5 of the neck includes a neck 6 of smaller diameter than that of the container in the bottle.
  • the container 3 is suitable for containing products which are biocompatible with humans and / or animals, that is to say compatible with ingestion and / or application to the human or animal body.
  • the device 1 comprises a support 8 for the container 3 (in phantom in the figure), comprising for example a retention jaw 9 in the form of a cup or U whose branches 9 ′, 9 "enclose the base of the container 3 fixed by side screws 10.
  • Means 11 for rotating the container 3 around its axis Oz at a determined speed V are provided.
  • the speed V can be constant or variable and regulated.
  • the means 11 comprise for example a rotary bar 12 for driving the support 8 extending along the axis Oz and a drive motor 13 in a manner known per se.
  • the bar 12, support 8 and container 3 assembly is mounted on a frame B (also symbolized in phantom on the figure 1 ) and is tiltable relative to the horizontal by a first angle ⁇ for example via a ratchet ball joint movable in rotation about an axis perpendicular to the axis Oz.
  • the inclination ⁇ is adjustable between 20 ° and 80 °, for example fixed here at 45 °.
  • the means 14 comprise a longitudinal rod or tube 16 connected at its end to means D of longitudinal displacement such as a jack.
  • the action of the jack, integral with the tool 15 translates the latter from an initial position external to the container 3 to an operating position internal to the container 3 along the axis Oz.
  • the tool 15 is therefore formed from the tube 16 provided with a spray nozzle 17 at its distal end 18.
  • the nozzle generates a vaporization at a determined solid angle of dispersion depending on the pressure and ejection speed controlled in a manner known per se.
  • the tube 16 is connected, at its opposite end to a system 19 for distributing coating liquid to be sprayed, comprising means 20 for supplying liquid material at a determined flow rate by metering pump.
  • the system 19 further comprises a liquid reservoir 21 and means 22 for circulating the liquid (dosing pump) arranged to regulate the flow rate D of the liquid via a computer 23 which, as will be seen below, also controls the other actuators implemented in the device.
  • the coating liquid is a curable liquid material for coating, for example that obtained by a process known under the name SOL-GEL.
  • the SOL-GEL process comprises a synthesis step carried out using alcoholates of formula M (OR) n , where M is a metal or silicon, and R is an organic alkyl group C n H 2n + 1 dissolved in a usual solvent .
  • the device 1 also comprises means 24 for heating the container known in themselves allowing the temperature of a part of the internal surface 2 of the container 3 to rise to a determined temperature threshold. More precisely, the internal surface 2 is heated by direct radiation from a heating resistor 25 arranged outside the container or by diffusion around the wall of the container placed in contact, for example with a heating muffle (not shown).
  • the container 3 and the resistor 25 are substantially confined in the same enclosure 27 so as to form an oven for uniform heating of the container.
  • the device 1 also includes a digital control computer 28 comprising the computer 23.
  • the computer 23 is arranged to calculate from the different setpoints imposed, a control law for each of the actuators and control them accordingly.
  • the computer 23 is thus arranged to control the speed V of the motor 13, the flow rate D of supply of the liquid, and the heating temperature determined as a function of the angle ⁇ of inclination of the support, of the viscosity parameters ⁇ of the liquid at said determined temperature and the roughness R of the part of the surface 2 of the container 3, so as to regularly deposit a layer of identical or substantially identical thickness of material coating liquid on the internal surface 2 of the container 3.
  • the computer 23 includes a rewritable non-volatile memory (not shown) and is arranged to digitally process the data entered by the operator at the time of processing and / or to take account of pre-written data (in said memory).
  • pre-written data can be measured rather than stored, for example by the use of sensor means (temperature, pressure, etc.), image capture means, such as an associated CCD camera 30 to computer processing adapted in a manner known per se to those skilled in the art.
  • sensor means temperature, pressure, etc.
  • image capture means such as an associated CCD camera 30 to computer processing adapted in a manner known per se to those skilled in the art.
  • the figure 2 shows the steps of the coating process according to another embodiment of the invention.
  • the method comprises a preliminary and optional step (not shown) of passivation of the internal face of the container 3.
  • the passivation takes place by filling with aqueous extraction liquid, for example in water of quality R1, then emptying after a determined time.
  • aqueous extraction liquid for example in water of quality R1
  • the container 3 is placed in an oven for a time of at least three hours at a determined temperature of more than 120 °. This operation is for example repeated twice.
  • This step reduces the amount of ions released into the contents of the container, especially when the coating layer does not cover all or most of the internal surface 2. It also prepares the internal face 2 for the adhesion of the coating layer.
  • the method comprises a first step 31 of supplying and fixing at least one container 3 on the support 8.
  • parameters are also introduced by the operator into the computer 23.
  • step 32 where the container 3 is inclined by an angle ⁇ , by automatically controlling this inclination by entering into the computer the value ⁇ sought and / or calculated.
  • the jack 17 is controlled to move the tool 15 from a general initial position (completely raised position outside the container 3) to an initial coating position, that is to say an inserted position in the container 3.
  • the start of the path of the nozzle 15 for the coating is then initiated.
  • step 34 the support 8 and / or the container 3 are rotated about the axis Oz at a speed V.
  • the speed V of rotation is variable and for example between 1.5 rad / s and 20 rad / s for example between 8 rad / s and 12 rad / s.
  • the introduction of the tool 15 can be carried out before tilting or after the next step of rotating the container.
  • step 35 the resistors are approached opposite the external surface of the container 3 and they are heated to a controllable temperature T of between 125 ° C and 250 ° C, for example between 160 ° C and 200 ° vs.
  • the support 8 and the container 3 were placed in the enclosure 27 or oven.
  • the computer 23 determines as a function of the parameters introduced the initial gel flow rate D as well as the relative position of the tool 15 relative to the container with camera control 30, for example.
  • the liquid coating material is then (step 36) regularly affixed to the internal surface 2 of the container 3 so as to obtain a deposit of regular thickness, substantially identical to the location chosen.
  • the flow rate D of the product is between 1 ml / min and 20 ml / min, for example between 1 ml / min and 3 ml / min.
  • test 37 is then carried out on the completion or not of the coating, and / or of the design and / or of the desired pattern on the internal surface.
  • the parameters are regulated (step 38) according to the control law and continuously recalculated.
  • the step of affixing the coating layer can be repeated a determined number n of times, for example three times in particular for coating disjoint patterns and / or for changing the covering material.
  • All of steps 31 to 37 can also be repeated a number n of times (test 39), in particular for the application of a layer of a second material.
  • n is for example greater than or equal to two, for example greater than or equal to three.
  • the figure 3 shows the introduction of a tool 40 according to another embodiment of the invention.
  • the tool which is substantially longitudinal, is here introduced vertically into the container 3 through the opening 5 of the neck, the axis 41 of the tube 16 of the tool 15 then forming an angle ⁇ of 30 ° with the axis Oz of container tilt 3.
  • the angle ⁇ is an angle less than 45 °, the inclination making it possible for example to make the junction between the vertical 42 and horizontal 43 walls of the container 3 and / or the corners 44 thereof, more accessible to the tool 15.
  • the tool 15 comprises a spray nozzle 17 for the coating liquid, the wedge 44 being to the right of the tool 15 and therefore suitable for being sprayed by a vertical jet 45.
  • the coating of the corner 44 of the container 3 can therefore be better controlled.
  • FIGS. 4A and 4B respectively represent a nozzle 46 at the curved end 47 of the tube 16, with spray inclined relative to the axis 41 of the tube, and a nozzle 48 with radial spray perpendicular to the axis of the tube.
  • the end 47 of the tube 16 can be flexible or rigid, the bending also making the inaccessible areas more accessible to the spray jet.
  • the support 8 for receiving the container 3 and the container 3 and / or the tool 15 can be set in relative movement in the horizontal plane.
  • This movement can be achieved by movement of the support frame B 8 and / or by movement of the tool insertion cylinder 15.
  • the movement in the horizontal plane is controllable and controllable by the computer 23.
  • the spray tube 16 of the type described with reference to the figure 4B is lowered into the container along the Oz axis, then underwent a relative rotation (arrow 50) with the bottle (ie the bottle or the tube turns).
  • the flow rate D of the nozzle is here controlled so that the variation in the flow rate D compensates, for a determined solid angle 51 of spraying of the nozzle, the variable distance from the wall to the nozzle.
  • the quantity of liquid sprayed per unit area is adapted to simulate a substantially constant distance.
  • the imaging means 30 (cf. figure 1 ) permanently acquire the nozzle / wall distance and transmit it to the computer for flow control D.
  • the distance between tube 16 and corresponding nozzle and wall 42 is compensated by the relative movement (arrow 52) in the horizontal plane of the nozzle relative to the container. More precisely, the tube 16 is no longer coaxial but offset and in movement parallel to the axis Oz. In this embodiment, the distance between nozzle and wall is then the parameter which adapts and the flow rate D can then remain substantially constant.
  • FIGS. 6A and 6B show two successive stages in the use of a tool 15 ′ according to another embodiment of the invention using application means in the form of a pad 53.
  • the tampon can for example be formed by an expandable parallelepiped part (arrow 54) between a retracted volume ( figure 6A ) allowing its introduction into the container and an expanded volume ( figure 6B ) of application. It is covered with a layer 55 of liquid and of transfer of this by pressurization on the wall 42 opposite.
  • the application can be done by rotation around a parallel axis off-center with respect to the axis Oz of the container 3, or even with an angle with respect to the axis OZ.
  • the pad is cylindrical and itself also mobile in rotation, which allows it to better rub on the internal surface of the container during the relative rotation of the tool and the container to deposit the liquid on the surface internal of it.
  • the layer 55 of the liquid absorption means 53 operates either by impregnation prior to transfer or via the reservoir 21 for continuous supply of coating liquid, arranged to diffuse the liquid over the external surface 45 of the layer 55 known in itself.
  • FIGS. 7A to 7D show the steps for implementing another embodiment of the impregnation system.
  • the means of application by dabbing 56 is an oblong balloon 57, extendable, arranged to expand between a first state of introduction into the container 3 ( figure 7A ) and a second state of application of the coating liquid ( figure 7D ).
  • the balloon 58 is introduced deflated after a quantity 59 of coating material has been introduced into the bottom of the container 3.
  • the balloon 58 is then inflated inside and the pressure of the balloon on the internal wall 2 of the container 3, which then matches the internal shape of the container, causes the material 59 to rise by pressure and capillarity along the internal face of the walls 2.
  • the balloon 59 comprises a porous membrane for liquids and / or comprises superficial capillary channels 60 for supplying the liquid to its external surface arranged to diffuse the liquid therein .
  • the balloon 59 is therefore partially covered with material before inflating it to apply the liquid to the internal wall 2.
  • the container 61 is advantageously cylindrical, of elongated shape (tubular or of small diameter d with respect to its height h, i.e. advantageously d ⁇ h / 10 and for example of maximum diameter less than 20 mm, for example 10 mm).
  • a first filling step (cf. figure 8A ) of the oblique container 61 with the liquid 62 up to a threshold level is provided.
  • a second step of expelling the liquid from the container (cf. figure 8B ) after impregnation is carried out at the end by the tool.
  • the tool 62 is a gas injector 63, for example pressurized air. It is placed at the right of the opening of the container 61 and at a distance of a few millimeters from it (for example 5mm).
  • the gas is violently injected at 64 at high pressure, for example between 1.5 and 10 bar.
  • the injection pressure and duration data are pre-written in the computer memory, so that the computer 23 determines the parameters necessary for the adhesion of the layer 63.
  • the viscosity ⁇ , the speed V of rotation and the roughness of the wall determine the application times to allow good adhesion of the layer 63 as well as the sufficient drying conditions (time and temperature).
  • This embodiment is particularly interesting when looking for the complete coating of the internal surface 2 of the container 61.
  • the figure 9A shows means 24 for heating the internal wall 2, via an emitter 66 of a focused beam 67.
  • an emitter is for example a projected infrared source or a CO2 laser.
  • the emitter 66 faces the external surface 68 of the wall of the container.
  • the heat is then either diffused by the medium constituting the wall of the container 3 and then increases the temperature of the internal surface 2 of said wall, or according to the wavelength chosen passes through the material constituting the wall and directly excites the layer 68 of affixed hardening liquid.
  • FIG. 9B Another embodiment of the invention is presented on the figure 9B .
  • a transmitter 69 for example similar to that of the figure 9A , is directly introduced into the container 3.
  • the infrared (IR) beam or the laser beam 70 then directly excites and heats the area of the internal surface 2 coated with the layer 68 of liquid.
  • the figure 9C is similar to the figure 9B but shows a beam 71 reflected by an adjustable mirror 72 inserted in the container 3 and fixed for example on the tube 16 of the tool.
  • the layer 74 includes thickness differences (e1 ... e11).
  • the difference (e1 - e11) in thickness of the coating layer 74 in any two points (e1 ... e11) of said coating layer is less than 1 ⁇ m, for example less than 0.5 ⁇ m.
  • the difference in thickness considered between the lowest value (e11) of said sampling and the highest value (e1) is lower. at a threshold value S (S ⁇ 0.2 ⁇ m).
  • sampling is meant here a collection (e1 ... e11) of data representative of the thickness measured at a determined geometric interval, for example regular, along at least one path defined at the surface of the coating layer 74.
  • the first curves C 1 , and C 1,2 ; C 2.1 and C 2.2 correspond to relative rotational speed controls between nozzle and container at constant injection pressure, making it possible to obtain a homogeneous deposit on the internal walls of the containers 58 respectively (C 1.1 and C 1,2 ), 59 (C 2.1 ) and 60 (C 2.2 ) by means of a nozzle 64 introduced by the necks 63 to generate a jet 65.
  • the curves show the evolution of the speed V or of the flow pressure D (on the ordinate) as a function of the angular position (on the abscissa) of the container with respect to the spray jet 65 for spraying the nozzle 64 over one revolution. complete container (Arrow 66).
  • the container 58, 59, 60, 61, 62 is parallelepipedic and substantially of section 67, 68, 69, 70, 71 inside rectangular, constant or not.
  • the nozzle 64 is introduced into the container 58, 59, 60, 61, 62 centered relative to the internal walls 72, 73 of the container.
  • centered is meant positioned on the isobarycenter of the section 67, 68, 69, 70, 71 inside the container at the considered height of introduction of the nozzle 64.
  • the nozzle 64 comprises an opening for the expulsion of a spray 65 for spraying coating liquid, the spray being of substantially conical shape.
  • the spray jet 65 In the initial insertion position of the nozzle 64, the spray jet 65 reaches a corner of the container 58, 59, 60, 61, 62 and the direction of the height of the cone of the jet 65 corresponds to the angle 0 ° .
  • the angular scanning of the nozzle 64 and / or of the container 58, 59, 60, 61, 62 describes the angular ranges from 0 ° to 30 ° P1, from 30 ° to 180 ° P2, from 180 ° to 210 ° P3 and from 210 ° to 360 ° P4, which correspond to the scanning of segments 72 of widths of section 67, 68, 69, 70, 71 interior rectangular for P1 and P3, and segments 73 of lengths of section 67, 68, 69, 70, 71 inside for P2 and P4.
  • the section of the container 58 is strictly rectangular and the interior volume of the container then presents at the jet 65 of the nozzle 64 of the walls 72, 73 planar.
  • the first speed curves C 1,1 and C 1,2 follow curves formed in stages between two determined values of speed respectively V1; V2 and V1 '; V2 ', with V1 and V1' lower respectively than V2 and V2 'corresponding to each of the internal walls.
  • the speed is therefore constant over a given angular range.
  • the speed is equal to V1 (respectively V1 ') on the first range P1 corresponding to a small side, V2 (respectively V2') on the second P2 corresponding to a large side, V1 (respectively V1 ') on the third P3 (small side) and V2 (respectively V2 ') on the fourth P4 (long side).
  • the internal section 68, 69 of the container 59, 60 is here substantially rectangular and has rounded sides 72, 73, for example the sides of the section are convex towards the inside of the top container 74, 75, or the internal walls of the container have corrugations 76.
  • the speeds V follow, on each angular range P1 to P4, an ascending triangular curve, that is to say a first segment of the curve 77, 78, 79, 80 (respectively 77 ', 78', 79 ', 80 ') of increasing slope to a peak 81, 82 (respectively 81', 82 ') substantially half of the considered range, 83, (approximately 15 °), 84 (approximately 105 °), 85 (approximately 195 ° ) and 86 (approximately 285 °) and a second segment of curve 87, 88, 89, 90 (respectively 87 ', 88', 89 ', 90') of decreasing slope until the end of the range considered.
  • the peaks 81, 82 (respectively 81 ', 82') have an abscissa which corresponds for the nozzle to the angular position in which the jet is in the direction of a vertex 74, 75 of the sections 68, 70, 71 convex.
  • the starting point (angle 0 °) of curves C 2.1 and C 2.2 corresponds to a determined speed V1 (or V1 '), the vertex 81, 81' of the first range P1 corresponding to a determined speed V2 ( or V2 '), and the vertex 82, 82' of the second range P2 corresponding to a determined speed V3 (or V3 ').
  • the first angular range P1 is identical to the third P3 and the second P2 is identical to the fourth P4, and V1 ⁇ V2 ⁇ V3 or V1 ' ⁇ V2' ⁇ V3 ').
  • the acceleration of the rotation of the nozzle makes it possible to compensate for the domed nature of the wall and / or the difference in nozzle / wall distance between the spraying of the corner and the spraying of the middle of the wall, by sweeping the surfaces closest to the nozzle faster.
  • the scanning speed around each vertex 81, 82 corresponds to the maximum speed V2 or V3 over the angular range considered.
  • the container is here the same or substantially the same as that corresponding to the embodiments of the speed curves C 2.1 and C 2.2 .
  • the flow curves D 1,1 and D 1,2 of pressure of the flow D are symmetrical in relation to an axis along the abscissa to the speed curves respectively C 2,1 and C 2,2 .
  • the pressure of the spraying flow rate D follows a descending triangular curve, that is to say a first segment 91, 92, 93, 94 (respectively 91 ′, 92 ′, 93 ′, 94 ′) of curve in decreasing slope to substantially half 83, 84 of the range considered and a second segment 95, 96, 97, 98 (respectively 95 ′, 96 ′, 97 ′, 98 ′) of increasing slope until the end of said range.
  • the initial flow is D1 (or D1 ')
  • the minimum flow on the first P1 and third P3 angular ranges is D2 (or D2') and on the second P2 and fourth P4 ranges is D3 (or D3 ') with D1 > D2> D3 (or D1 '> D2'> D3 ').
  • control of the flow D corresponds to an all or nothing control, ie between a flow D1 and a zero flow.
  • the control is therefore carried out by step or pulse of determined duty cycle.
  • the cuts and / or pulses are substantially centered around half of each range 83, 84, and symmetrical with respect to it.
  • Two cut-off pulses are symmetrically distributed for the first P1 and third P3 angular ranges and five for the second P2 and fourth P4 ranges.
  • the average flow rate is adapted to the geometry of the wall of the container opposite the nozzle.
  • the curves shown on the figure 11 are defined by segments but could be defined by curved section for example according to a portion of sinusoidal or polynomial shape.
  • a sensor for example an optical sensor such as a high definition camera, acquires a two or three dimensional image of the internal surface and transmits it to the calculation means.
  • an optical sensor such as a high definition camera
  • Such a measurement can be carried out on each bottle or in a homogeneous batch of bottles.
  • the calculation means then choose for each section the curve profile and / or the characteristic values of each curve (the initial speeds, the speed and the number and the positions of the peaks, etc.).
  • Each speed or pressure curve of the flow alone represents a control law but it can also be associated with each other to form another embodiment of a control law.
  • the evolution of the two curves can be carried out in opposite directions.
  • This behavioral symmetry makes it possible to have a homogeneous spray in quantity on the surface.
  • the speeds V1, V2 and V3 (and V1 ', V2' and V3 '), the flow rates D1, D2, D3 (and D1', D2 ', D3') and the duty cycles are constant or variable and adjusted or recalculated by example each time the nozzle is lowered and each new corresponding horizontal section.
  • the viscosity ⁇ , the temperature T of the surface of the container, the roughness R, and the angles of inclination ⁇ of the bottle and of the nozzle with respect to the bottle are used for example in this embodiment for the definition of the initial speed values and the value of peaks, flow rates D and duty cycles.
  • viscosity ⁇ the higher it is, the higher the speeds V1 to V3 and the higher the flow pressures D1 to D3 and / or the low duty cycle and the high frequency.
  • the present invention is not limited to the embodiments more particularly described. On the contrary, it embraces all the variants thereof and in particular those where the tool is a brush with retractable bristles or not, with a liquid reservoir or not, those where the tool comprises an application part and an absorbent part of the blotting type for the excess, those where the container 3 is oriented with the opening 5 downwards, those where several containers are treated in at the same time, those where the container 3 is made of a material other than glass such as plastic, metal such as aluminum or ceramic.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Spray Control Apparatus (AREA)
  • Coating Apparatus (AREA)
EP15808745.2A 2014-11-26 2015-11-26 Procede et dispositif de revetement de la surface interne d'un recipient et recipient obtenu avec un tel procede Active EP3223966B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1461529A FR3028777B1 (fr) 2014-11-26 2014-11-26 Procede et dispositif de revetement de la surface interne d'un recipient et recipient obtenu avec un tel procede
PCT/FR2015/053225 WO2016083748A2 (fr) 2014-11-26 2015-11-26 Procede et dispositif de revetement de la surface interne d'un recipient et recipient obtenu avec un tel procede

Publications (2)

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EP3223966A2 EP3223966A2 (fr) 2017-10-04
EP3223966B1 true EP3223966B1 (fr) 2020-06-17

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EP15808745.2A Active EP3223966B1 (fr) 2014-11-26 2015-11-26 Procede et dispositif de revetement de la surface interne d'un recipient et recipient obtenu avec un tel procede

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Country Link
US (1) US20170326586A1 (enrdf_load_stackoverflow)
EP (1) EP3223966B1 (enrdf_load_stackoverflow)
JP (1) JP2017536981A (enrdf_load_stackoverflow)
FR (1) FR3028777B1 (enrdf_load_stackoverflow)
WO (1) WO2016083748A2 (enrdf_load_stackoverflow)

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CA3137103A1 (en) * 2019-04-19 2020-10-22 Photex Inc. System and method for inside of can curing
US12280396B2 (en) 2019-04-19 2025-04-22 Photex Inc. Narrowband can manufacturing
CN112495652B (zh) * 2020-11-23 2023-07-04 贵州华富天玻璃包装有限公司 一种新型酒瓶内壁绘图设备
FR3143388A1 (fr) * 2022-12-15 2024-06-21 Wheaton Pintura E Beneficiamento De Vidros Ltda Méthode de peinture interne

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FR817944A (fr) * 1936-05-20 1937-09-14 Continental Can Co Procédé de revêtement de la surface intérieure de bidons métalliques
CH273746A (de) * 1950-09-16 1951-02-28 G Adeline Pierre Verfahren zur Herstellung von Gussstücken aus Stahl und Stahllegierungen.
CA945019A (en) * 1971-06-23 1974-04-09 Elast-O-Cor Products And Engineering Limited Casting plastics material on the interior of hollow shells
GB2281873A (en) * 1993-09-15 1995-03-22 Denby Pottery Company Limited Glazing holloware internally on rotating support which can be tipped to remove excess glaze
JPH091010A (ja) * 1995-06-23 1997-01-07 Aichi Steel Works Ltd 管内面への塗装装置
FR2817175B1 (fr) * 2000-11-28 2003-07-11 Pechiney Emballage Alimentaire Procede de laquage d'elements d'emballage de petite dimension tels que des capsules
JP2003053220A (ja) * 2001-08-23 2003-02-25 Kubota Corp 金属管の受口内面塗装装置
EG23499A (en) * 2002-07-03 2006-01-17 Advanced Plastics Technologies Dip, spray, and flow coating process for forming coated articles
US20040005420A1 (en) * 2002-07-08 2004-01-08 Burgoyne William Franklin Fluid containment vessels with chemically resistant coatings
US7521087B2 (en) * 2002-08-27 2009-04-21 Basf Catalysts Llc Method for catalyst coating of a substrate
US8302557B2 (en) * 2005-07-07 2012-11-06 Cataler Corporation Device and method for coating base material
DE102007012928B4 (de) * 2007-03-19 2009-09-03 Umicore Ag & Co. Kg Verfahren zur Einbringung einer katalytischen Beschichtung in die Poren eines keramischen Durchfluß-Wabenkörpers
JP5549057B2 (ja) * 2008-06-18 2014-07-16 新日鐵住金株式会社 耐火物吹き付け方法および吹き付け装置
FR2944007B1 (fr) 2009-04-03 2012-06-08 Sgd Sa Procede de fabrication d'un recipient en verre et recipient correspondant.
US8389052B2 (en) * 2010-03-30 2013-03-05 Toyo Glass Co., Ltd. Method for treating inside surface of glass container and glass container
FR2965491B1 (fr) * 2010-10-05 2013-05-17 Sgd Sa Procede de revetement et machine de revetement correspondante
CN103298566B (zh) * 2011-03-15 2016-08-31 株式会社东芝 涂敷装置以及涂敷方法

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Also Published As

Publication number Publication date
WO2016083748A3 (fr) 2016-09-01
WO2016083748A2 (fr) 2016-06-02
US20170326586A1 (en) 2017-11-16
FR3028777A1 (fr) 2016-05-27
JP2017536981A (ja) 2017-12-14
EP3223966A2 (fr) 2017-10-04
FR3028777B1 (fr) 2021-01-15

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