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EP2611695B1 - Procédé et dispositif de traitement de contenants - Google Patents

Procédé et dispositif de traitement de contenants Download PDF

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Publication number
EP2611695B1
EP2611695B1 EP11722737.1A EP11722737A EP2611695B1 EP 2611695 B1 EP2611695 B1 EP 2611695B1 EP 11722737 A EP11722737 A EP 11722737A EP 2611695 B1 EP2611695 B1 EP 2611695B1
Authority
EP
European Patent Office
Prior art keywords
containers
treatment
printing ink
container
curing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP11722737.1A
Other languages
German (de)
English (en)
Other versions
EP2611695A1 (fr
EP2611695B2 (fr
Inventor
Katrin Preckel
Martin Schach
Gernot Keil
Markus Reiniger
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.)
KHS GmbH
Original Assignee
KHS GmbH
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
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Application filed by KHS GmbH filed Critical KHS GmbH
Publication of EP2611695A1 publication Critical patent/EP2611695A1/fr
Application granted granted Critical
Publication of EP2611695B1 publication Critical patent/EP2611695B1/fr
Publication of EP2611695B2 publication Critical patent/EP2611695B2/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • 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
    • B05D3/06—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 radiation
    • 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
    • B05D3/06—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 radiation
    • B05D3/061—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 radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/02—Sterilising, e.g. of complete packages
    • B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
    • B65B55/08—Sterilising wrappers or receptacles prior to, or during, packaging by irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C2003/227—Additional apparatus related to blow-moulding of the containers, e.g. a complete production line forming filled containers from preforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C2003/228—Aseptic features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C7/00—Concurrent cleaning, filling, and closing of bottles; Processes or devices for at least two of these operations
    • B67C7/0073—Sterilising, aseptic filling and closing
    • B67C7/0086—Sterilisation being restricted to the area of application of the closure

Definitions

  • the invention relates to a method according to the preamble of patent claim 1 and to a device according to the preamble of patent claim 12.
  • tainers are in particular cans, bottles, tubes, pouches made of metal, glass and / or plastic, but also other packaging materials which are suitable for filling liquid or viscous products for pressure filling or for pressureless filling.
  • treating containers means, in particular, the printing, also the digital printing of the containers on their outer container surface using at least one printing ink, preferably the multicolor printing using printing inks of different colors, the drying or hardening of the at least one printing ink
  • the at least one printing ink and the sterilizing, sterilizing or disinfecting the container to understand at least one container area at which a sterilization is required, taking into account the entire process flow, for example within a Be Daveerab Stahl and / or taking into account the state the container to be treated and / or taking into account the manufacturing process of these containers, such as plastic, eg PET by blow molding.
  • printing generally means the application of one or more printed images or imprints, in particular also multicolored printed images or imprints on the respective outer container surface, independently of special printing processes. Printing is preferably carried out using printing heads which are known to the person skilled in the art and which operate by the inkjet process DE 10 2006 001 223 A1 are described.
  • a printing ink is used, which by energy input, ie by heat and / or UV radiation and / or microwave radiation and / or electron radiation is preferably dried or cured by crosslinking.
  • non-thermal or substantially non-thermal energy radiation is to be understood as meaning energy radiation which contains no or substantially no components of heat or infrared radiation (IR radiation).
  • IR radiation infrared radiation
  • non-thermal or substantially non-thermal energy radiation is primarily UV radiation as well as beta or electron radiation or microwave radiation.
  • an energy radiation namely with UV radiation, electron radiation, electron radiation, microwave radiation and heat radiation or infrared radiation as well as by plasma discharge.
  • a disadvantage of the known technique is that for the drying or curing of the imprints and for the sterilization or sterilization of the container independent, each consuming and costly methods and devices are required.
  • the object of the invention is to provide a method for treating containers, in which the drying or curing of the at least one printing ink or the respective imprint and the sterilization or sterilization of the container with reduced effort is possible. To solve this problem, a method according to claim 1 is formed. An apparatus for treating containers is the subject of claim 12.
  • a special feature of the method according to the invention is that at least the drying of the at least one applied to the respective container ink or the corresponding imprint as well as the sterilization or sterilization of the container with one and the same type of energy radiation, preferably with one and the same kind of not thermal or substantially non-thermal energy radiation, preferably with UV radiation.
  • the respective container area to be sterilized is directly exposed to the energy radiation.
  • a complete sterilization or a complete sterilization of the container u.a. on the entire container inner surface and at the mouth area is preferably not through the wall of the container, so as to achieve optimal sterilization or sterilization with the lowest possible radiation energy.
  • UV radiation is used as energy radiation, as is preferably the case with the invention
  • this radiation forms radicals with the photoinitiators contained in the respective printing ink (printing ink), which then crosslinks the monomers for the curing of the printing ink and / or Bring oligomers of this color.
  • UV lamps low-pressure Hg lamps, medium-pressure Hg lamps, excimer lamps, exciplex lamps, amalgam lamps, LEDs, xenon lamps, etc.
  • the containers are moved during treatment with a transport system through a treatment path and / or rotated or pivoted about its container axis.
  • Pre-treatment of the container surface to be printed preferably takes place in order to at least improve the adhesive strength of the imprint.
  • This pretreatment is preferably carried out with UV radiation which cleaves at a wavelength of about 170 to 200 nm oxygen molecules in the ambient air, with the formation of ozone. This is then decomposed by the UV radiation to form highly reactive O * radicals, which in turn lead to cleavage or oxidation of organic molecules on the container surface.
  • other radicals such as COO *. * OH, CO * and COOH- * formed, which lead to symmetry disturbances of the plastics, which results in an overall increase in the surface energy of the container made of plastic and thus an improvement in the strength of the ink or the imprint, is achieved.
  • the drying or curing of the at least one printing ink and / or the sterilization of the container takes place by pressurizing the container with a process gas or with a protective or inert gas, for example with N 2, CO 2, Ar, Kr, Xe or a mixture of these.
  • This process gas with which the interior of the container is then flushed, also serves, for example, for cooling the containers during the treatment and / or has cooled down so far that the temperature of this process gas is lower than the temperature of the containers to be treated.
  • This will u.a. ensures that the process gas introduced into the container during the treatment u.a. heated by the heat emitted from the respective container and thereby partially flows out of the container mouth, whereby an ingress of oxygen, which could possibly damage the filled into the container contents, is prevented in the respective container.
  • the inert gas should be cooled, since the oxygen from the immediate container environment has a tendency to diffuse back into the container, as a large concentration gradient of the oxygen partial pressure in the container opening is present.
  • This tendency of the oxygen to flow into the container can be suppressed as long as as long as a cool gas in the container warms up to the temperature of the container, expands and slowly flows out of the container.
  • This effect has been demonstrated for both an upside down and an upside down opening, with a gas that is about 10K colder than the tank, preventing gas diffusion of the oxygen for more than 10 seconds. Even colder gas fillings have even better effect.
  • the drying or curing of the at least one printing ink and / or the sterilization of the containers takes place in an oxygen-poor inert gas atmosphere formed, for example, by the abovementioned process or protective gas, i. within a housing containing this low-oxygen atmosphere and delimiting from the environment, formed by sheets, cages, hoods, etc.
  • an oxygen-poor inert gas atmosphere formed, for example, by the abovementioned process or protective gas, i. within a housing containing this low-oxygen atmosphere and delimiting from the environment, formed by sheets, cages, hoods, etc.
  • a particularly effective, short-wave UV radiation for example a UV radiation having a wavelength in the range between about 170 nm and 280 nm, preferably in the range between about 170 nm and 220 nm or in the range of about 170 nm to 200 nm for the drying or curing of the at least one printing ink and / or for sterilizing the container possible, ie the use of UV radiation which can spread in ambient air because of the oxygen present only a few tenths of a millimeter.
  • the inert gas of the oxygen-poor inert gas atmosphere thus forms a transmission gas, which allows the use of short-wave UV radiation.
  • the oxygen partial pressure in the protective gas atmosphere is preferably at most 0.5%, preferably at most 0.1% of the total pressure of this atmosphere.
  • the pretreatment of the container outer surface to improve the adhesion of the at least one printing ink or the imprint by increasing the surface energy at the same time also a sterilization or sterilization of the container outer wall.
  • Container carriers or container grippers serve to hold and / or move the containers during the treatment. These are sterilized according to the invention together with the containers by the energy radiation also and / or there is an additional sterilization of the container carrier or container gripper after their uncoupling from the containers. Furthermore, it is also possible to carry out the container carriers or container grippers in such a way that each container carrier or container gripper remains at the respective container at least over the entire treatment path and with the respective container, even in the case of a treatment path which consists of several transport elements following one another in a direction of transport of the containers Transport direction is connected only on the part of the transport path formed by this device. Each container carrier or container gripper is decoupled from the container in question at the end of the treatment and then returned sterilized to the beginning of the treatment line or to the beginning of a system comprising this treatment line.
  • the in the FIG. 1 generally designated 1 treatment section is used to treat containers in the form of bottles 2, the plant 1 via an outer conveyor 3 hanging, that is kept hanging on a formed below the respective bottle opening 2.1 flange or neck ring 2.2, fed, in one indicated by the arrows A transport direction in which the bottles 2 are also moved through the treatment section 1 on a wave or meandering transport path 4 ( FIG. 2 ) and in which the treated bottles 2 leave the treatment section 1 at a container outlet in turn hanging on an outer conveyor 5.
  • the bottles 2 are supplied for further use, for example to a filling machine.
  • the bottles 2 are made for example in the manner known to those skilled in the art of preforms by stretch or blow molding in a blow molding machine, which in the FIG. 1 only indicated schematically with the block 6.
  • the method is not limited to PET bottles, but of course is also applicable to other plastic bottles such as PE, PP, PLA or PHB bottles.
  • the treatment section 1 is modular in the illustrated embodiment and consists of several treatment modules, ie in the illustrated embodiment of a total of eight treatment modules 7.1 - 7.8, the succession in the valency of their reference numerals in the transport direction A. are provided following that the bottles 2 are passed from treatment module to treatment module and thereby on the in the FIG. 2 move shown transport path 4.
  • the treatment modules 7.1 - 7.8 each consist of an identical base unit with a lower module or machine housing 8, on its upper side in each case a rotatable about a vertical machine axis rotor 9 is provided on the circumference of several treatment stations are formed, where the bottles 2 at a Container inlet of the treatment module 7.1 - handed 7.8 and after the local treatment, which takes place on an angular range of rotation of the respective rotor 9, individually to a treatment station of a subsequent treatment module 7.2 - 7.8 or to the outer conveyor 5 on.
  • the rotors 9 of the successive in the transport direction treatment modules 7.1 - 7.8 are synchronized by an appropriate control and driven at the same rotational or angular speed, but in opposite directions, as indicated by the arrows B and C in the FIG. 1 is indicated.
  • the treatment stations of the treatment modules 7.1-7.8 are adapted to the respective treatment by means of corresponding aggregates and / or functional elements provided in the basic unit.
  • the treatment positions of the treatment module 7.1 are designed for pretreatment of the bottles 2 described in more detail below.
  • the treatment modules 7.2 - 7.7 serve as printing modules for printing, preferably for digital printing of the bottles 2 on their outer surface, ie for applying multicolor printed images or imprints on the outer surface of the bottles 2, preferably also on different areas of this bottle outer surface.
  • the treatment positions of the treatment modules 7.2 - 7.7 are accordingly in the FIG. 1 equipped printheads not shown, for example, working with the ink-jet method and known in the art printheads.
  • the treatment module 7.8 serves as a drying and sterilization module for drying or curing of the applied to the bottles 2 imprints or the corresponding ink or printing ink and at the same time for sterilization of the bottles 2 at least on a partial area at which such a sterilization due to the production of Bottles 2 and / or the starting materials used for the preparation and / or the handling of the bottles 2 after their manufacture, etc. is required.
  • both the curing of the imprint, as well as the sterilization using UV radiation, each with a UV spectrum, which optimizes in the manner described above for the curing of the ink as well as for killing germs is, for example, with a UV light spectrum, which has a pronounced maximum at a wavelength of about 270 nm.
  • the treatment module 7.8 is described in detail in the FIG. 3 and 4 shown.
  • the treatment stations denoted by 10 in these figures each comprise a forked or claw-like container carrier 11 for the suspended support and storage of the bottle 2 on its neck ring 2.2.
  • a first UV-emitting device 12 is arranged with at least one UV lamp, which is directed downwards, ie on the area of the bottle opening 2.1.
  • a second UV-emitting device 13 is provided, which is radially inwardly lying relative to the machine axis and which radiates onto the circumferential or circumferential surface of the bottle 2. This second radiating device 13 serves to cure or dry the printing ink.
  • a turntable 14 is provided, which is rotatable about its vertical turntable axis by a drive, not shown, and through which the bottle 2 is set in rotation.
  • the container carrier 11, the devices 12 and 13 and the turntable 14 are provided on a housing 15, on which, for example, the unit formed by the container carrier 11 and the device 12 controlled in the vertical direction up and down is movable (double arrow D) and in which among others the to Control and / or cooling of the UV lamps of the devices 12 and 13 necessary components are housed. Furthermore, the container carrier 11, the devices 12 and 13, the turntable 14 and the housing 15 form a complete assembly 16, which is provided as such on the rotor 9 and which forms one of the treatment stations of the treatment module 7.8.
  • the container carrier 11 and the device 12 are respectively raised at the transfer area between the treatment modules 7.7 and 7.8 and at the transfer area between the treatment module 7.8 and the outer conveyor 5 for a problem-taking over or dispensing a bottle 2 and lowered during treatment, so that the relevant Bottle 2 then stands with its bottle opening 2.1 remote bottle bottom on the turntable 14 and is rotated with this about the vertical turntable axis or about the same axis with this axis arranged bottle axis, in particular for a treatment of the entire bottle circumference with that of the device 13 emitted UV radiation.
  • the container carrier 11 then serves only to secure the upright bottle 2 against falling over.
  • the device consisting of the container carrier 11 and the device 12 can be moved up and down in a controlled manner.
  • the turntable 14 controlled in the vertical direction is moved up and down to a problem-free transfer and delivery of bottles 2 to or from the respective treatment station 10 and in the aforementioned manner on the other hand, turning the bottles 2 to allow their vertical axis of the bottle during the treatment.
  • UV sterilization of the bottles 2 takes place only in the area of their bottle mouth or mouth 2.1, this treatment requires that the bottles 2 are essentially sterile after their preparation or are formed from sterile preforms and possibly in the area their bottleneck were contaminated by the further handling on the way to treatment section 1 or within the treatment section 1.
  • FIG. 5 shows in a representation similar FIG. 4 as a further embodiment of the invention, a treatment station 10a, which differs from the treatment station 10 substantially in that the above the container support 11 provided UV light or radiation emitting means 12a is designed for sterilization of at least the entire inner surface of the respective bottle 2 and during the treatment with a UV lamp or with an acted upon by the UV radiation of a UV lamp light guide 17 during treatment through the bottle opening 2.1 extends into the interior of the bottle 2 to be treated. Also in this embodiment, the sterilization of the respective bottles 2 and the curing or drying of the printed image 2.4 takes place at one and the same treatment station 10a of the treatment module 7.8 and preferably at the same time.
  • This embodiment of the treatment station 10a takes into account the fact that even with transparent bottles 2, i. when producing the bottles 2 made of a translucent or clear material or plastic, such as PET, arranged at a location outside the bottle 2, emitting UV radiation source such a strong absorption of UV radiation when penetrating the wall of the bottle 2, at least with an economically justifiable UV performance and within a treatment period, among others in view of the necessary performance of the treatment section 1 is justifiable, no adequate sterilization is possible.
  • transparent bottles 2 i. when producing the bottles 2 made of a translucent or clear material or plastic, such as PET, arranged at a location outside the bottle 2, emitting UV radiation source such a strong absorption of UV radiation when penetrating the wall of the bottle 2, at least with an economically justifiable UV performance and within a treatment period, among others in view of the necessary performance of the treatment section 1 is justifiable, no adequate sterilization is possible.
  • the treatment module 10a can also be designed so that both a sterilization of the bottles 2 on the bottle inner surface, as well as an intensive sterilization on the bottle outer surface, in particular in the area of the bottle opening 2.1 and in particular by means of UV radiation, is achieved.
  • the treatment module 7.1 is designed for pretreatment of the bottles 2, in particular for pre-treatment of the bottles 2 on their surface to be printed, in order to achieve improved adhesion of the printing ink there. This pretreatment is carried out by irradiation of the surfaces to be printed later with UV radiation. The improvement of the adhesion for the ink is u.a.
  • the ultraviolet radiation in particular with a wavelength of less than 240 nm, cleaves oxygen molecules in the vicinity of the treated surfaces, which leads to the formation of ozone, which then, together with the oxygen, absorbs UV quanta with wavelengths below 240 nm ,
  • radicals such as COO *, * OH, CO *, COOH *
  • the plastic chains of the material of the bottles 2 radicals are formed, which there lead to selective changes in the symmetry of the molecular structure, whereby the surface energy increases and thus the Adhesive strength and wettability of the surfaces to be printed with ink can be improved.
  • sterilization or sterilization of the outer surface of the bottles 2 preferably also takes place.
  • the treatment stations of the treatment module 7.1 are then formed, for example, similar to the treatment stations 10 and 10a, respectively, but without the UV radiation emitting device 12 or 12a.
  • treatment module 7.1 Other treatment methods and accordingly designed treatment stations for improving the adhesive strength and wettability of the surfaces to be printed on the bottles 2 are possible for the treatment module 7.1.
  • methods and appropriately trained treatment stations in which by pyrolysis, for example by flame pyrolysis a surface silicization of the bottles 2 takes place at least on the surface areas to be printed later, in such a way that on the outer surface of the respective bottle 2 Although a thin but very dense and firmly adhering silicate with high surface energy and therefore high Adhesive strength is produced for the respective printing ink.
  • a suitable gas for example propane and / or butane gas in the presence of an organosilicon compound (eg silane).
  • the UV sterilization and the UV curing of the printing ink i. the treatment of the bottles 2 at the treatment stations 10 and 10a of the treatment module 7.8 in an oxygen-poor, sterile inert gas atmosphere, e.g. from N2 and / or CO2 and / or He and / or Ar and / or Kr and / or Xe.
  • an oxygen-poor, sterile inert gas atmosphere e.g. from N2 and / or CO2 and / or He and / or Ar and / or Kr and / or Xe.
  • the inert gas of the protective or inert gas atmosphere acts as a transmission gas, which allows for a fast and high quality UV sterilization to use a very short-wave UV radiation, for example, UV radiation in the wavelength range of 170 to 280 nm, preferably in Range between 170 to 220 nm.
  • UV radiation in the wavelength range of 170 to 280 nm, preferably in Range between 170 to 220 nm.
  • the oxygen partial pressure in the protective gas or inert gas atmosphere should at most be 0.5%, preferably 0.1%, of the total pressure.
  • the corresponding treatment stations 10 and 10a are housed in a housing, which is preferably acted upon by the protective or inert gas with a certain pressure, so that at the Inlet and outlet of this enclosure adjusts an inert gas flow from the enclosure into the environment, which prevents (flow) oxygen from entering the enclosure.
  • UV sterilization and UV curing take place in a part of an overall system preceding the filling machine, namely in the treatment module 7.8 of the treatment section 1.
  • the UV sterilization and / or UV curing or at least one corresponding treatment station in a filling machine, for example, in the form that in at least one treatment station then a UV sterilization or sterilization Also introduced into the respective bottle 2 filling takes place, as is possible in particular for mineral or table waters.
  • the FIG. 6 shows in a very simplified functional representation and in plan view of a system 18 for producing the bottles 2 by blow molding and subsequent printing and UV sterilization and UV curing of the bottles 2 and the respective imprint 2.4.
  • the system 18 includes, inter alia, a blow molding machine 19 of circulating design, which has a plurality of blow molds 21.
  • Blow molding machine 19 has a rotor 20 which can be driven about a vertical machine axis, wherein the blow molds 21 are arranged on or on the rotor 20.
  • the blow molds 21 are supplied with the heated preforms via a preheating section 22 having a transport path, which has inter alia the feed dog 23 and the two transport stars 24 and 25.
  • the bottles 2 produced with the blow molding machine 19 are forwarded via a transport star 26 to a treatment section 27 which, for example, corresponds to the treatment section 1 and on which the bottles 2 are pretreated on their bottle outer surface and ggs. sterilized with UV radiation, printed and then subjected to UV sterilization and curing of the respective imprint or printed image with UV radiation.
  • the thus treated bottles 2 are fed via an outlet star 28 and an outer conveyor 29 of a filling machine.
  • the transport of the bottles 2 from the blow molding machine 19 to the treatment line 27, through the treatment line or through the various treatment modules or work stations of this treatment section and the transport on the conveyor 28 takes place in reversed form, i. with the bottle opening 2.1 facing down.
  • the fundamental difference of the treatment section 27 with respect to the treatment section 1 is that instead of the container carrier 11, which in the treatment section 1 each fixed part of the treatment stations 10 and 10a of the individual treatment modules 7.1 - 7.8 are, in the system 18 grippers or centering and holding elements 30 ( FIGS. 7 and 8 ) are used, in which already the preforms 31 (preforms) are kept centered after their transfer from the feed dog 23 and then the bottles 2 after blow molding and with which bottles 2 are moved to the that workstation or to that treatment module, which corresponds to the treatment module 7.8 and in which the UV sterilization of the bottles 2 takes place.
  • the container carrier 11 which in the treatment section 1 each fixed part of the treatment stations 10 and 10a of the individual treatment modules 7.1 - 7.8 are, in the system 18 grippers or centering and holding elements 30 ( FIGS. 7 and 8 ) are used, in which already the preforms 31 (preforms) are kept centered after their transfer from the feed dog 23 and then the bottles 2 after blow molding and with which bottles 2 are moved to
  • Each centering and holding element 30 is designed so that controlled pivoting or turning of the respective bottle 2 about the bottle axis during its treatment is possible, in particular also during UV sterilization or UV curing.
  • each centering and holding elements 30 is provided with an actuator or can be coupled to such a respective treatment station.
  • the centering and holding elements 30 are formed so that the respective bottle 2 in the region of its mouth of the bottle 2.1. is held by clamps or jaws.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Claims (16)

  1. Procédé servant à traiter des contenants (2), dans le cadre duquel les contenants (2) au niveau au moins d'une station de traitement sont pourvus, au niveau de leur face extérieure de contenant, d'au moins une impression (2.3) en utilisant au moins une couleur d'impression ou encre d'impression et un séchage ou un durcissement de la couleur d'impression est effectué, au niveau d'une station de traitement (10, 10a), par l'exposition des contenants (2) à un rayonnement d'énergie, de préférence à un rayonnement d'énergie non thermique ou essentiellement non thermique, sachant que les contenants (2) sont maintenus au cours du traitement au moins par intermittence au niveau d'éléments de centrage et de maintien ou au niveau de supports de contenant (11, 30),
    caractérisé en ce
    qu'une désinfection ou une stérilisation des contenants (2) est également effectuée, à l'aide du même type de rayonnement d'énergie, qui sert au séchage ou au durcissement de la couleur d'impression, au niveau au moins d'une zone de contenant, à savoir au niveau d'une zone d'un orifice de contenant (2.1) et/ou au niveau d'une face intérieure de contenant, sachant que les éléments de centrage et de maintien ou les supports de contenant (11, 30) sont stérilisés lors de la stérilisation des contenants (2) ou, toutefois, en supplément avant ou après l'assemblage aux contenants, de préférence à l'aide du rayonnement d'énergie utilisé également en vue du séchage ou du durcissement de la couleur d'impression au moins au nombre d'une et/ou en vue de la stérilisation des contenants.
  2. Procédé selon la revendication 1, caractérisé en ce que le rayonnement d'énergie non thermique ou essentiellement non thermique est un rayonnement d'électrons, un rayonnement de micro-ondes ou de préférence un rayonnement UV, par exemple un rayonnement UV présentant une longueur d'onde située dans la plage comprise entre 170 et 280 nm, de préférence dans la plage allant de 170 à 220 nm.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un séchage préalable ou un durcissement préalable de l'au moins une couleur d'impression est effectué avant le séchage ou le durcissement de l'au moins une couleur d'impression ainsi qu'avant la stérilisation des contenants (2).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le durcissement de l'au moins une couleur d'impression et la stérilisation des contenants (2) sont effectués à l'aide du rayonnement d'énergie avant et/ou après un remplissage de contenants (2) avec un produit de remplissage, à savoir à l'intérieur de la ligne de transvasement de contenants.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'avant l'impression des contenants (2), ces derniers sont traités au préalable au moins au niveau des zones à imprimer de leur face extérieure de contenant afin d'améliorer l'adhérence de l'au moins une couleur d'impression, par exemple par l'exposition à un rayonnement d'énergie, de préférence au rayonnement d'énergie utilisé également en vue du séchage ou du durcissement de la couleur d'impression au moins au nombre de une et en vue de la stérilisation des contenants (2), et/ou en ce qu'avant l'impression des contenants (2), ces derniers sont traités au préalable par une silicatation de surfaces au moins au niveau des zones à imprimer de leur face extérieure de contenant afin d'améliorer l'adhérence de la couleur d'impression au moins au nombre de une.
  6. Procédé selon la revendication 6, caractérisé en ce que les contenants (2) sont désinfectés ou stérilisés lors du séchage ou du durcissement de l'au moins une couleur d'impression et/ou lors du traitement préalable au niveau de leur face extérieure de contenant.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le séchage ou le durcissement de l'au moins une couleur d'impression au moins au nombre de et/ou la stérilisation des contenants (2) sont effectués à l'aide du rayonnement d'énergie en exposant et/ou en rinçant les contenants (2) à l'action de et/ou avec un gaz de protection ou un gaz inerte, par exemple du N2, du CO2, du He, du Ar, du Kr, du Xe ou à l'action de et/ou avec un mélange d'au moins deux desdits composants, sachant que le gaz de protection ou le gaz inerte est par exemple refroidi, de préférence à une température inférieure à la température des contenants (2) à traiter.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins le séchage ou le durcissement de l'au moins une couleur d'impression et/ou la stérilisation des contenants (2) sont effectués à l'aide du rayonnement d'énergie dans une atmosphère de gaz de protection ou de gaz inerte pauvre en oxygène, par exemple dans une atmosphère de gaz de protection ou de gaz inerte pauvre en oxygène présentant une pression partielle d'oxygène, qui représente au maximum environ 0,5 %, de manière préférée au maximum 0,1 % de la pression totale de l'atmosphère de gaz de protection ou de gaz inerte, sachant que l'atmosphère de gaz de protection ou de gaz inerte est formée par exemple de N2, CO2, Ar, KR, Xe ou d'un mélange au moins de deux desdits composants.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les contenants (2) sont déplacés au cours du traitement préalable et/ou au cours du séchage ou du durcissement de l'au moins une couleur d'impression et/ou au cours de la stérilisation, à l'aide au moins d'un élément de transport (9) sur un trajet de transport (4) d'une ligne de traitement (1, 27) et/ou sont tournés ou pivotés autour de leur axe de contenant.
  10. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le séchage ou le durcissement de l'au moins une couleur d'impression ainsi que la stérilisation des contenants (2) sont effectués lors d'une seule et même étape de procédé ou au niveau d'une seule et même station de traitement (10, 10a) ou au niveau d'une seule et même station de travail ou d'un seul et même dispositif (7.8) d'une ligne de traitement de contenants (1) ou d'une installation (18).
  11. Procédé selon la revendication 11, caractérisé en ce que les éléments de centrage et de maintien ou les supports de contenant (30) sont découplés, après la libération des contenants (2), au niveau de l'extrémité d'une ligne de traitement (1, 27), d'un système de transport formant la ligne de traitement ou d'éléments de transport (9) et sont ramenés en tant qu'unités autonomes au niveau d'une entrée de la ligne de traitement ou d'une installation présentant ladite ligne de traitement (27).
  12. Dispositif servant à traiter des contenants (2), comprenant une ligne de traitement ou de transport (1, 27) pour les contenants (2), comprenant au moins une première station de traitement au niveau de la ligne de traitement ou de transport (1, 27) servant à l'impression, de préférence servant à l'impression numérique des contenants (2) au niveau de leur face extérieure de contenant en utilisant au moins une couleur d'impression ou encre d'impression, comprenant également au moins une deuxième station de traitement (10, 10a) au niveau de la ligne de transport (1, 27) servant à sécher ou à durcir la couleur d'impression par l'exposition des contenants (2) à un rayonnement d'énergie, de préférence à un rayonnement d'énergie non thermique ou essentiellement non thermique, sachant que les contenants (2) sont maintenus au cours du traitement au moins par intermittence au niveau d'éléments de centrage et de maintien ou au niveau de supports de contenant (11, 30), caractérisé en ce qu'au moins un système (12, 12a, 13) en vue d'une désinfection ou d'une stérilisation des contenants (2) au niveau au moins d'une zone de contenant à savoir au niveau d'une zone d'un orifice de contenant (2.1) et/ou au niveau d'une face intérieure de contenant en soumettant les contenants (2) à l'action du même type de rayonnement d'énergie est prévu au niveau de la ligne de traitement ou de transport (1, 27), à l'aide duquel rayonnement d'énergie le séchage ou le durcissement de la couleur d'impression est effectué, sachant que les éléments de centrage et de maintien ou les supports de contenant (11, 30) sont stérilisés lors de la stérilisation des contenants (2) ou toutefois en supplément avant ou après l'assemblage aux contenants, de préférence à l'aide du rayonnement d'énergie utilisé également en vue du séchage ou du durcissement de l'au moins une couleur d'impression au moins et/ou en vue de la stérilisation des contenants.
  13. Dispositif selon la revendication 12, caractérisé en ce que le au moin un système (12, 12a, 13) est prévu en vue de la désinfection ou de la stérilisation des contenants (2) au niveau de l'au moins une deuxième station de traitement (10, 10a).
  14. Dispositif selon la revendication 12 ou 13, caractérisé en ce qu'est prévue, au niveau de la ligne de traitement ou de transport (1, 27), au moins une autre station de traitement servant à sécher au préalable ou à durcir au préalable l'au moins une couleur d'impression ou encre d'impression et/ou servant à traiter au préalable les contenants (2) avant l'impression au moins au niveau des zones à imprimer de leur face extérieure de contenant afin d'améliorer l'adhérence de la couleur d'impression par exemple par l'exposition à un rayonnement d'énergie, de préférence au type de rayonnement d'énergie utilisé également en vue du séchage ou du durcissement de la couleur d'impression et en vue de la stérilisation des contenants (2) et/ou par l'application d'une couche adhésive et/ou par silicatation de surfaces.
  15. Dispositif selon l'une quelconque des revendications 12, 13 ou 14, caractérisé en ce que la au moins une autre station de traitement (10, 10a) et/ou le système (12, 12a, 13) sont réalisés en vue de la désinfection ou de la stérilisation des contenants (2), et/ou en ce que la au moins une autre station de traitement servant à sécher au préalable ou à durcir au préalable l'au moins une couleur d'impression ou encre d'impression et/ou servant à traiter au préalable les contenants (2) est réalisée afin d'émettre un rayonnement d'électrons, un rayonnement de micro-ondes ou de préférence un rayonnement UV, par exemple un rayonnement UV présentant une longueur d'onde située dans la plage comprise entre 170 et 280 nm, de préférence dans la plage allant de 170 à 220 nm.
  16. Dispositif selon l'une quelconque des revendications 12 à 15, caractérisé en ce que l'au moins une deuxième station de traitement (10, 10a) comprenant le au moins un système (12, 12a, 13) est prévue en vue de la désinfection ou de la stérilisation des contenants (2) à l'intérieur d'une machine ou d'une installation d'impression de contenants et/ou de remplissage de contenants.
EP11722737.1A 2010-09-02 2011-05-19 Procédé et dispositif de traitement de contenants Not-in-force EP2611695B2 (fr)

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US10486193B2 (en) 2019-11-26
EP2611695A1 (fr) 2013-07-10
DE102010044244A1 (de) 2012-03-08
EP2611695B2 (fr) 2019-08-07
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