EP3672882B1 - Procédé pour commander la quantité d'une substance adhésive à appliquer sur un support - Google Patents

Procédé pour commander la quantité d'une substance adhésive à appliquer sur un support Download PDF

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Publication number
EP3672882B1
EP3672882B1 EP18743491.5A EP18743491A EP3672882B1 EP 3672882 B1 EP3672882 B1 EP 3672882B1 EP 18743491 A EP18743491 A EP 18743491A EP 3672882 B1 EP3672882 B1 EP 3672882B1
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EP
European Patent Office
Prior art keywords
adhesive
sensor
application unit
gas sensor
container
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.)
Active
Application number
EP18743491.5A
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German (de)
English (en)
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EP3672882A1 (fr
Inventor
Christian SCHLICHTENBREDE
Joachim BRZOSKA
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
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Publication date
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Publication of EP3672882A1 publication Critical patent/EP3672882A1/fr
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Publication of EP3672882B1 publication Critical patent/EP3672882B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/10—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to temperature or viscosity of liquid or other fluent material discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/20—Gluing the labels or articles
    • B65C9/22—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/40—Controls; Safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/081—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to the weight of a reservoir or container for liquid or other fluent material; responsive to level or volume of liquid or other fluent material in a reservoir or container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • 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
    • B65B17/00—Other machines, apparatus, or methods for packaging articles or materials
    • B65B17/02—Joining articles, e.g. cans, directly to each other for convenience of storage, transport, or handling
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/02—Applying adhesives or sealing liquids
    • B65B51/026—Applying adhesives or sealing liquids using rotating applicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C2009/0071—Details of glueing devices
    • B65C2009/0075—Constructional details of glueing rollers

Definitions

  • an adhesive has to be applied to a container, a package or a label.
  • the supply pressure of the adhesive and/or the volume of the supplied adhesive has hitherto been recorded, for which purpose corresponding sensors are arranged in the adhesive supply or in an adhesive container.
  • an application unit for applying the adhesive is then controlled, for example a feed pump with a spray unit or the like.
  • a problem with such a method is that changes in the composition of the adhesive that may contribute to affecting the function of the adhesive are not detected.
  • changes in the composition of the adhesive that may contribute to affecting the function of the adhesive are not detected.
  • a specific adhesive is required for a specific application.
  • Such methods make it impossible to tell whether the correct adhesive has actually been introduced into the adhesive container.
  • a method for controlling an adhesive to be applied to a carrier in which the adhesive is applied to the carrier by means of an application unit and the conveyance of the adhesive to be applied is controlled by a control device of the application unit.
  • a sensor device is used for detecting adhesive parameters, such as the temperature of the adhesive, so that a heating device for heating the adhesive can be controlled based on an output signal from the sensor device.
  • the object of the present invention is to provide a method and a device which take into account the properties of the adhesive.
  • the invention is based on a method for controlling and monitoring an adhesive to be applied to a carrier, which is applied to a carrier or carrier surface by means of an application unit, e.g is controlled.
  • the process can be used, for example, for labeling containers or packaging, but also for mutually gluing containers, e.g. to form multi-packs of 4, 6 or 8 containers.
  • the gas concentration or the partial pressure of at least one component of the adhesive is measured with at least one gas sensor and the application unit is controlled as a function of the sensor signal from the gas sensor and/or a display and/or an error signal is indicated and/or stored.
  • an additive is recorded as a secondary substance added to the adhesive, e.g. perfume or odor substance.
  • This secondary substance ideally has no functional property for the adhesive or the gluing process itself.
  • the secondary substance is added to the adhesive after the manufacture of the adhesive.
  • solvent should always be understood to mean such a secondary substance.
  • solvent should always be understood to mean such a secondary substance.
  • the partial pressure of the solvent and/or binder decreases, which can be detected by means of the gas sensor.
  • the application unit can thus be stopped before a reference value or limit value is reached, for example, if a satisfactory adhesive result can no longer be expected due to the reduced solvent and/or binder content.
  • a binder and / or Solvent supply can be controlled, which supplies the more volatile components to the adhesive again, so that this remains constant over time in terms of its composition and thus its adhesive quality. In this way, aging of the adhesive due to vaporization or evaporation of more volatile components can be counteracted. It is therefore possible with the invention to also detect the property, ie the composition of the adhesive itself, when controlling the application unit.
  • the evaporation behavior i.e. the change in the partial pressure of the secondary substance
  • a warning message can then be displayed on a display of the system or device, such as a labeling device or container packing station with hot-melt adhesive points, that the adhesive should be replaced.
  • the system could also be stopped, operated at a different output or operated with a higher glue output in order to compensate for the loss in quality of the glue.
  • messages could thus be output to the control device of the system and/or the system itself could be controlled, e.g. not started or stopped.
  • Such an application unit is, for example, a spray application unit with a spray head as the application unit, which sprays the adhesive onto the container or onto a label, or a hot-melt adhesive unit, with at least one application opening as the application unit, which applies a drop of hot-melt adhesive to a container in order to seal it with others to connect containers.
  • a spray application unit with a spray head as the application unit, which sprays the adhesive onto the container or onto a label
  • a hot-melt adhesive unit with at least one application opening as the application unit, which applies a drop of hot-melt adhesive to a container in order to seal it with others to connect containers.
  • It can also be an outer packaging, e.g. a carton or a bottle carrier, which is to be provided with a label.
  • the adhesive can be applied either to the labels, to the container or packaging and/or to points between the containers.
  • the invention not only enables the composition of the adhesive to be checked, but also to check whether the correct adhesive is used at all for a specific purpose. For example, different adhesives can be used for different purposes. Using the wrong adhesive for a specific purpose can lead to improper bonding results. Therefore, by determining the partial pressure of at least one component of the adhesive, in particular a secondary material, it can be recognized immediately whether the correct adhesive has been introduced into the adhesive container for the specified adhesive purpose.
  • the application unit is not even started, for example.
  • the application unit it is therefore possible for the application unit to only be allowed to start when the partial pressure of at least one ingredient in the adhesive is within a permissible value range.
  • non-functional secondary materials to the adhesive has the great advantage that they can be developed and used completely independently of the adhesive itself in terms of their intended use and their detectability.
  • a secondary substance can be very volatile and can no longer be detected very quickly after an adhesive has liquefied, for example if the sole purpose of use is to ensure that only an approved adhesive has been filled into a system.
  • the missing partial pressure peak in temporal connection with the change in the fill level could then lead, for example, to an error message, power throttling of the system or shutdown of the system.
  • the secondary material is added to the adhesive after manufacture of the adhesive and prior to its intended use in or for an application unit. This can be done in particular by known mixing processes and/or by spraying the adhesive with the secondary material.
  • adhesive is understood to be a fully functional adhesive for which the secondary substance has no or virtually no importance in relation to the actual adhesive function.
  • the application unit usually contains an adhesive container, into which the adhesive to be applied is filled, an adhesive supply from the adhesive container to the application unit, and the application unit itself, e.g. a wiper, a spray head with spray nozzles or a droplet application unit.
  • the gas sensor is arranged in the area of one of these components. It is possible for the adhesive to be fed to or stacked in a larger external hopper or tank. In this case, the application unit does not contain its own adhesive container but only the adhesive supply, whereby the gas sensor is then arranged in the area of the adhesive supply or the application unit or possibly a suitable sensor gas space provided there.
  • the gas sensor can be arranged directly on and/or above the application head for the adhesive.
  • the gas sensor can be arranged directly on and/or above the application head for the adhesive.
  • a gas chromatographic or olfactometric sensor is used as the gas sensor, which in particular allows an assessment of the solvent content and/or binder content in the adhesive.
  • gas sensors can also be used, such as sensors based on the principle of proton exchange reaction mass spectrometry.
  • the gas sensor in connection with the analysis and evaluation unit will in particular detect the gas constituents based on the presence or absence of at least one type of substance and/or the concentration of the at least one type of substance.
  • the application unit contains a spray device and the strength of the spray jet is set as a function of the sensor signal.
  • the adhesive can be adjusted to an optimum operating value, taking into account the gas partial pressure of the adhesive's constituents, which allows optimum adhesive performance taking into account the property of the adhesive and possibly the binder and/or solvent content of the adhesive.
  • the application unit is preferably formed as a hot-melt adhesive application unit that is used, for example, for applying adhesive dots.
  • the adhesive dots on the outer circumference of e.g. PET bottles allow them to be connected to one another without surrounding shrink film or plastic straps.
  • the gas sensory monitoring of the property of the adhesive for example the solvent and/or binder content, can ensure that the adhesive properties of the adhesive are optimized at all times.
  • the application unit comprises a circulating system for an adhesive or the application unit is connected to a circulating system for an adhesive.
  • the sensor signal or a signal derived from it is compared with a reference value and an error message is output if the reference value is reached, exceeded or fallen below.
  • a reference value For example, when the solvent content of the adhesive agent is checked by the gas sensor, it happens that due to the higher gas pressure of the solvent, the solvent gradually evaporates from the adhesive agent, so that the content of the solvent decreases continuously.
  • the partial pressure for the solvent can thus be constantly monitored via the gas sensor, and if the solvent content falls below a lower limit value, either a system error message can be issued or a correction message can be issued which results in a solvent and/or binder supply being switched on which re-supplies solvent and/or binder to the adhesive to restore the quality of the adhesive.
  • a stirring or mixing device can of course also be actuated, which then causes the added solvent and/or binder to be well stirred with the adhesive present in the adhesive container.
  • a quantity sensor for the quantity of adhesive present in the adhesive container is provided, so that the controller for the application unit calculates the quantity of solvent to be supplied from the quantity of adhesive still present in the adhesive container and/or binder from the gas partial pressure and the amount of adhesive present in the adhesive container.
  • This plant can thus run automatically and help ensure that the more volatile components of the adhesive, such as solvents and/or binders, always remain at a certain target level.
  • the gas sensor is preferably designed to measure different ingredients in the adhesive.
  • several different gas sensors can also be provided for measuring the different ingredients, for example a gas sensor for a partial pressure of an adhesive base material, a gas sensor for the partial pressure of a binder and a third gas sensor for the partial pressure of the adhesive solvent.
  • an error signal is preferably output if the measured composition of the ingredients deviates from a target composition. This error signal can be used, for example, to show on a display which components deviate from the target composition, so that a service technician is able to add the components that are missing to the adhesive container.
  • a quantity sensor is provided for the adhesive container, which determines the quantity of adhesive present in the adhesive container.
  • This can be a weight sensor, a volume sensor or an optical sensor.
  • the composition of the different ingredients of the adhesive can thus be monitored and possibly even corrected by the invention.
  • the sensor signal and/or a control value derived from the sensor signal is/are recorded over time and an error procedure is carried out if the time derivation of the control values exceeds a limit value.
  • Solvent partial pressure of the adhesive decreases over the period of use, because the solvent evaporates first because of its higher partial pressure from the adhesive. This leads to a time-decreasing intensity profile of the sensor signal. The derivation of the measured intensity over time can thus be formed and this value can be compared with a limit value. In this way it is possible to predict when a certain minimum partial pressure will be reached, above which the adhesive will no longer work satisfactorily.
  • a supply device for the corresponding component can be switched on, which adds the corresponding component either continuously or in batches in order to keep it at a certain desired level in the adhesive.
  • the invention also relates to a device for applying adhesive to a carrier, in particular a label, a container such as a bottle, a can, a keg or a carton.
  • the device comprises an application unit for the adhesive on the carrier, optionally an adhesive container and/or an adhesive feed for the adhesive to be applied to the application unit, the quantity to be applied by the application unit, the temperature and/or the flow rate of the adhesive being controlled by a control device can be controlled.
  • the device contains, in particular in the adhesive container and/or in the adhesive feed, a gas sensor which is designed to detect the partial pressure of at least one ingredient contained in the adhesive, the gas sensor being connected to the control device on the output side and the control device is designed to control the application unit as a function of the sensor signal from the gas sensor.
  • This device allows the measurement of the gas partial pressure of at least one component of the adhesive and the control of the application unit as a function of the sensor signal, ie of the gas partial pressure of the corresponding component. In this way it can be ensured that the property of the adhesive is monitored over time and is advantageously retained. In this sense, the proportion of at least one component of the adhesive, for example the solvent, can be monitored and it can be ensured that the gas partial pressure of the solvent, ie its proportion in the adhesive, does not fall below a specific minimum value.
  • either the application unit can be stopped or a feed device can be switched on beforehand, depending on the sensor signal, which ensures that the volatile component of the adhesive is promptly fed.
  • This feed can be continuous or batchwise. In this way, the quality of the adhesive can be ensured over the entire duration of the process by means of the invention.
  • This device also makes it possible to monitor whether the correct adhesive is used for a desired bonding process.
  • the gas sensor is preferably designed to detect different gas constituents of the adhesive and their concentration. Instead, different gas sensors can also be used for the different gas constituents. In this way, the composition of several components of the adhesive can be monitored for a target value. This also makes it possible, in particular, to identify the adhesive.
  • the device has a supply circuit comprising the adhesive container and/or the adhesive supply as well as the gas sensor arranged in the supply circuit. In this way it can be ensured that the measurement result of the gas sensor is not falsified by external environmental influences.
  • the device preferably contains at least one second sensor which measures at least one of the following parameters: temperature of the adhesive, fill level of the adhesive in the adhesive container, viscosity and/or flow rate of the supplied adhesive.
  • temperature of the adhesive e.g., temperature of the adhesive
  • fill level of the adhesive in the adhesive container e.g., fill level of the adhesive in the adhesive container
  • viscosity and/or flow rate of the supplied adhesive e.g., temperature of the adhesive, fill level of the adhesive in the adhesive container, viscosity and/or flow rate of the supplied adhesive.
  • the device preferably contains gas suction and/or vacuum generation in the area of the adhesive container and/or the adhesive feed and/or the application unit. In this way it can be ensured that the more volatile components of the adhesive do not get into the environment and cause health problems there.
  • the device is preferably a labeling machine for labeling containers, such as bottles, cans or kegs, or a machine for connecting a plurality of containers to form a container pack.
  • Two adhesive sensors are preferably provided for the temperature and/or the viscosity of the adhesive, and the control device is designed to control a heating device and/or a conveying device for the adhesive, such as an adhesive conveying pump, depending on the adhesive sensor(s). In this way it can be ensured, for example, that the viscosity and/or temperature of the adhesive is/are always within a certain target range.
  • FIG 1 shows an example of a labeling device 10 with a vacuum drum 12, which has six receiving locations 14 distributed equidistantly around its circumference, each with an outwardly facing suction surface 28 for one label 24 each.
  • the labeling device 10 also includes a label feed 16 with a cutting roller 18 and a transfer drum 20.
  • the vacuum drum 12 has a receiving area 22 in which a label 24 is transferred from a label receptacle 21 of the transfer drum 20 to the receiving space 14.
  • the Vacuum drum 12 also has a delivery area 26 in which the label 24 is applied from the receiving location 14 to the periphery of a container 34 located at a transport location 30 of a transport device 32 of a treatment device.
  • Each receiving place 14 contains a suction surface 28 which is connected to an associated vacuum space 36 which ends in a perforation 38 of a base plate which is arranged axially normal and concentric to the axis of rotation of the vacuum drum 12.
  • the vacuum spaces 36 of the individual receiving locations 14 are supplied with a vacuum via these perforations 38 .
  • the labeling device 10 also contains a glue roller 13 which is arranged in the first sector A of the vacuum drum 12 between the receiving area 22 and the delivery area 26 and there provides the back of the labels 24 held on the receiving places 14 with glue.
  • This glue roller 13 rotates in the opposite direction to the vacuum drum 12, as a result of which a layer of glue is applied evenly to the back of the labels 24 as they unroll, which layer then serves to attach the labels 24 to the circumference of the containers 34.
  • the figure does not show that the receiving locations 14 can also optionally be moved radially outwards in order to come into improved contact with the outer circumference of the containers 34 in the delivery area 26, for example.
  • the vacuum drum 12 can also be designed and arranged in such a way that the receiving locations 14 enter the peripheral area of the containers 34 located in the transport locations 30 with their suction surface 28 even without radial movement, so that the labels 24 can also be applied without a radial movement of the individual receiving locations 14 is possible.
  • An application unit 40 is provided in the area of the glue roller 13, which has a spray device 42, with which the adhesive is sprayed evenly onto the glue roller 13, which glue roller 13 then subsequently rolls on the reverse side 24 of the label, so that the label 24, after being pressed onto the Container 34 sticks well to this.
  • the amount of adhesive sprayed on is controlled via a control valve 44 which is arranged in an adhesive feed 46 to the spray device 42 .
  • the adhesive supply 46 is connected to an adhesive container 48 in which a larger amount of adhesive is present to over a longer Process duration to ensure the supply of adhesive to the spray device 42.
  • a gas sensor 50 is arranged in the adhesive container 48 and is connected to a control device 52 which controls the control valve 44 .
  • a temperature sensor 54 and a viscosity sensor 56 are arranged in the adhesive supply 46, with which further physical properties of the supplied adhesive can be monitored.
  • a filling level sensor 58 for the amount of adhesive in the adhesive container 48 is arranged in the adhesive container 48 .
  • a heating device 64 in the adhesive container 48 which is also connected to the control device 52 . All of the sensors 50, 54, 56, 58 mentioned above are connected to the control device 52 and supply it with measurement signals or control signals.
  • a solvent supply 60 and a binder supply 62 are connected to the adhesive container 48, which supplies 60, 62 are also controlled via the control device 52.
  • a stirring device which is also actuated by the control device 52 can also be provided in the adhesive container 48 .
  • At least one gas partial pressure of at least one component of the adhesive is measured via gas sensor 50, and depending on this sensor signal from gas sensor 50, control device 52 controls a control valve 44, for example, which is arranged upstream of spray device 42.
  • control device 52 controls a control valve 44, for example, which is arranged upstream of spray device 42.
  • the control device 64 in the adhesive container 48 can be controlled in order to keep the adhesive at a desired temperature, which in turn has an effect on the viscosity of the adhesive.
  • a component of the adhesive other than the solvent can also be detected via the gas sensor 50 .
  • the partial pressures of several chemical components of the adhesive can be detected via the gas sensor, which allows conclusions to be drawn about the type of solvent and thus an assessment of whether the adhesive is correct for the desired purpose or not. If it is determined by the sensor signals from gas sensor 50 and viscosity sensor 56 that, for example, certain ingredients such as solvents or binders are missing, these ingredients can be tracked via solvent supply 60 and binder supply 62, so that the composition of the adhesive in the adhesive container 48 is back to where it should be. When tracking via the solvent supply 60 and the binder supply 62, the current level in the adhesive container 48 can be taken into account via the level sensor 58, so that the optimized amount of solvent and binder can be supplied or tracked.
  • 2 12 shows, for example, the sensor signal of the gas sensor 50, which in this case measures the partial pressure of the solvent in the form of an intensity value I in the adhesive. is applied in 2 hence the intensity value I, i.e. the level of the solvent partial pressure over the measured time t.
  • the curve for the partial pressure of the solvent can have a decreasing course, which means that a straight line dl/dt can be applied to this curve for evaluation purposes, so that a point in time can be determined in connection with a minimum concentration of the solvent I min at which this minimum value is reached in the current process.
  • the partial pressure of the secondary substance and/or solvent then rises sharply and is expected in the intensity range k1. If this peak is actually measured in the expected range due to the sensor signal from the gas sensor, the system is activated. If this peak is not obtained in the intensity range k1 within the subsequent period of time t2 after filling, then the adhesive is either aged or incorrect. A warning signal can then be emitted and/or the system can be stopped or not started up.
  • the labeling device is only shown as an example of an adhesive application device. It can also be a device for labeling boxes, Beverage carriers or gluing devices for gluing several containers to form larger packs, or an application device for adhesive in connection with a folding and erecting station for cardboard packaging.
  • the spray device 42 is mentioned as an example. It can also be a device for applying adhesive dots or some other surface application device.
  • the control device 52 controls the control valve 44 and/or the feed pump.
  • the adjustable feed pump can also replace the control valve.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Labeling Devices (AREA)

Claims (19)

  1. Procédé pour commander et/ou surveiller un adhésif à appliquer sur un support, dans lequel l'adhésif est appliqué sur le support au moyen d'une unité d'application (40), dans lequel le transport de l'adhésif à appliquer est commandé au moyen d'un dispositif de commande (52) de l'unité d'application (40), caractérisé en ce que la pression partielle ou la concentration de gaz au moins d'un ingrédient de l'adhésif est mesurée avec au moins un capteur de gaz (50), ce signal de capteur est évalué dans une unité de commande (52),
    et que l'unité d'application (40) est commandée en fonction du signal de capteur du capteur de gaz (50) et/ou un affichage et/ou un signal d'erreur est émis et/ou mis en mémoire.
  2. Procédé selon la revendication 1, caractérisé en ce qu'un démarrage, une vitesse et/ou un débit volumique d'adhésif de l'unité d'application (40) n'est permis et/ou commandé de manière correspondante que lorsque la pression partielle d'un ingrédient de l'adhésif se situe dans une plage de valeurs admissible.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'un capteur à fonctionnement olfactométrique est utilisé comme capteur de gaz (50).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que
    - l'unité d'application (40) contient un dispositif de pulvérisation (42) et la force du jet de pulvérisation est réglée en fonction du signal de capteur ou
    - l'unité d'application (40) contient un dispositif d'application de colle thermofusible.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le capteur de gaz (50) est conçu pour mesurer différents ingrédients, et qu'un signal d'erreur est émis lorsque la composition mesurée des ingrédients est différente d'une composition de consigne, en particulier en ce qui concerne au moins un type de substance et/ou une concentration d'une composition de consigne.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le signal de sortie de capteur et/ou une valeur de commande dérivée du signal de capteur est/sont acquis dans le temps, et qu'une procédure d'erreur est mise en oeuvre, lorsque la dérivée temporelle des valeurs de commande dépasse une valeur seuil.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le signal de sortie de capteur et/ou une valeur de commande dérivée du signal de capteur est/sont acquis et corrélés en fonction de la valeur de niveau de remplissage et/ou du processus de remplissage d'au moins un contenant d'adhésif et/ou d'un contenant collecteur externe.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un liant et/ou solvant est amené à l'adhésif en fonction du signal de capteur.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un des paramètres suivants est mesuré au moyen d'au moins un deuxième capteur :
    - la température de l'adhésif,
    - le niveau de remplissage de l'adhésif dans le contenant d'adhésif (48),
    - la viscosité de l'adhésif amené et/ou
    - la vitesse de fluage de l'adhésif amené,
    et que le signal de capteur du capteur de gaz (50) est évalué et corrélé conjointement avec le au moins un paramètre ou au moins un ensemble de données tiré de celui-ci du au moins un autre capteur, et en outre l'unité d'application (40) et/ou au moins un élément de machine relié de manière fonctionnelle est commandé en fonction de ces données et/ou un affichage s'effectue et/ou au moins un signal d'erreur est émis et/ou mis en mémoire.
  10. Dispositif pour appliquer un adhésif sur un support, en particulier selon un procédé selon l'une quelconque des revendications précédentes, comprenant une unité d'application (40) pour l'adhésif sur le support (24), laquelle présente un contenant d'adhésif (48) et/ou une amenée d'adhésif (46) pour le contenant à appliquer ainsi qu'un dispositif d'application (42), dans lequel l'adhésif destiné à être appliqué par l'unité d'application (40) peut être commandé par un dispositif de commande (52), caractérisé en ce que
    il présente un capteur de gaz (50) qui est conçu pour acquérir la pression partielle au moins d'un ingrédient contenu dans l'adhésif ou adhérant à celui-ci, que le capteur de gaz (50) est relié côté sortie au dispositif de commande (52), et que le dispositif de commande (52) est conçu pour surveiller ou pour commander l'unité d'application (40) en fonction du signal de capteur du capteur de gaz (50) et/ou pour émettre un signal d'erreur.
  11. Dispositif selon la revendication 10, caractérisé en ce qu'un système d'aspiration est prévu dans la zone d'application.
  12. Dispositif selon la revendication 10 ou 11, caractérisé en ce que le capteur de gaz (50) est disposé dans le contenant d'adhésif (48) et/ou dans une amenée d'adhésif (46).
  13. Dispositif selon l'une quelconque des revendications 10 à 12, caractérisé en ce que le capteur de gaz (50) est conçu pour acquérir différents ingrédients gazeux de l'adhésif et de la concentration de ceux-ci.
  14. Dispositif selon l'une quelconque des revendications 10 à 13, caractérisé en ce qu'il présente un circuit d'amenée, qui comprend le contenant d'adhésif (48) et/ou l'amenée d'adhésif (46), et que le capteur de gaz (50) est disposé dans le circuit d'amenée.
  15. Dispositif selon l'une quelconque des revendications 10 à 13, caractérisé en ce qu'il présente au moins un deuxième capteur, qui mesure au moins un des paramètres suivants :
    - la température de l'adhésif,
    - le niveau de remplissage de l'adhésif dans le contenant d'adhésif (48),
    - la viscosité de l'adhésif amené
    - la vitesse de fluage de l'adhésif amené, et ces paramètres peuvent être évalués dans l'unité de commande (52) seuls ou les uns en fonction des autres.
  16. Dispositif selon l'une quelconque des revendications 10 à 15, caractérisé en ce qu'il présente une aspiration de gaz/génération de vide dans la zone du contenant d'adhésif (48) et/ou de l'amenée d'adhésif (46).
  17. Dispositif selon l'une quelconque des revendications 10 à 16, caractérisé en ce qu'il est une étiqueteuse (10) ou une machine pour l'assemblage adhésif unilatéral ou bilatéral de bouteilles en verre ou plastique, boîtes ou contenants similaire en lots de produits.
  18. Dispositif selon l'une quelconque des revendications 10 à 16, caractérisé en ce qu'il contient des capteurs d'adhésif (54, 56) pour la température et la viscosité de l'adhésif ainsi qu'un dispositif de chauffage (64) et un système de commande, en particulier une pompe de refoulement et/ou une soupape de réglage (44) pour l'adhésif, et que le dispositif de commande (52) est conçu pour commander ce dispositif de chauffage (64) et/ou ce système de commande en fonction des signaux de sortie des capteurs d'adhésif (54, 56).
  19. Dispositif selon l'une quelconque des revendications 10 à 18, caractérisé en ce qu'il présente une unité modulaire distribuant l'adhésif, telle qu'un rouleau encolleur (13) ou un dispositif de pulvérisation (42) et le au moins un capteur de gaz (50) est disposé sur ou au-dessus de ladite unité modulaire et/ou monté ou fixé directement sur celle-ci.
EP18743491.5A 2017-08-24 2018-07-20 Procédé pour commander la quantité d'une substance adhésive à appliquer sur un support Active EP3672882B1 (fr)

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DE102017119439.8A DE102017119439A1 (de) 2017-08-24 2017-08-24 Verfahren zum Steuern der Menge eines auf einen Träger aufzubringenden Klebemittels
PCT/EP2018/069706 WO2019037970A1 (fr) 2017-08-24 2018-07-20 Procédé pour commander la quantité d'une substance adhésive à appliquer sur un support

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EP3672882B1 true EP3672882B1 (fr) 2022-12-07

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CN111032518A (zh) 2020-04-17
WO2019037970A1 (fr) 2019-02-28
JP2020531256A (ja) 2020-11-05
EP3672882A1 (fr) 2020-07-01
JP7157139B2 (ja) 2022-10-19
US20200230639A1 (en) 2020-07-23
US11534792B2 (en) 2022-12-27

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