EP3405403A1 - Procédé pour étalonner un capteur destiné à relever une substance indicatrice de la concentration de gaz d'un emballage - Google Patents

Procédé pour étalonner un capteur destiné à relever une substance indicatrice de la concentration de gaz d'un emballage

Info

Publication number
EP3405403A1
EP3405403A1 EP17700571.7A EP17700571A EP3405403A1 EP 3405403 A1 EP3405403 A1 EP 3405403A1 EP 17700571 A EP17700571 A EP 17700571A EP 3405403 A1 EP3405403 A1 EP 3405403A1
Authority
EP
European Patent Office
Prior art keywords
sensor
packaging
gas
indicator substance
package
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.)
Pending
Application number
EP17700571.7A
Other languages
German (de)
English (en)
Inventor
Andreas Steffen
Sven Müller
Roland JAINDL
Volker Ribitsch
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.)
GEA Food Solutions Germany GmbH
Original Assignee
GEA Food Solutions Germany 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
Application filed by GEA Food Solutions Germany GmbH filed Critical GEA Food Solutions Germany GmbH
Publication of EP3405403A1 publication Critical patent/EP3405403A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/001—Packaging other articles presenting special problems of foodstuffs, combined with their conservation
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/021—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas the containers or wrappers being interconnected
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/044—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles being combined with a filling device
    • B65B31/045—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles being combined with a filling device of Vertical Form-Fill-Seal [VFFS] machines
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/02—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
    • B65B61/025—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging for applying, e.g. printing, code or date marks on material prior to packaging
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/20—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/226—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
    • G01M3/229—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators removably mounted in a test cell
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
    • G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3281—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/7703—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator using reagent-clad optical fibres or optical waveguides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G01N21/9054—Inspection of sealing surface and container finish
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/223—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/223—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols
    • G01N31/225—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols for oxygen, e.g. including dissolved oxygen
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N2021/7769—Measurement method of reaction-produced change in sensor
    • G01N2021/7786—Fluorescence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases

Definitions

  • the present invention relates to a method of calibrating a sensor that measures at least one component of a gaseous atmosphere in a package made of packaging material and having a gas concentration indicator substance read by the sensor.
  • the object is achieved with a method for calibrating a sensor which measures at least one component of a gas atmosphere in a packaging made of a packaging material and in which a gas concentration indicator substance is read out by the sensor, in which a volume of a gas is provided with a known composition in which the gas concentration indicator substance is located and the packaging material is provided between the sensor and the gas concentration indicator substance and the concentration of at least one component of the gas is measured and then optionally the indication and / or a signal of the sensor of the composition of the Gas is adjusted.
  • the present invention relates to a method for calibrating a sensor.
  • the sensor is in a packaging machine, for example in and / or downstream of a sealing chamber.
  • the sensor can also be located beyond the packaging machine.
  • the sensor may be somewhere along the Supply chain through a retail store to the consumer.
  • the sensor may also be part of a handheld device, such as a portable computer, a cell phone or a tablet PC.
  • this is a light sensor which receives a light signal which is emitted by a gas concentration indicator substance.
  • a gas concentration indicator substance comprises a substance in which a chemical and / or physical property changes with the concentration of a gas, for example oxygen and / or CO 2. For example, their color and / or the wavelength of their emitted light change and / or a fluorescence effect occurs.
  • the substance is irradiated with visible light, preferably by an LED, in particular pulsed and thereby stimulated / excited and emits and / or after completion of the irradiation of fluorescent light, which has a different, in particular larger, wavelength than the excitation light.
  • the senor measures the change in the wavelength, the intensity of the emitted wavelength and / or the fluorescence effect which is measured, for example, by a time shift as a result of the changed, in particular larger, wavelength.
  • the gas concentration indicator substance There is preferably visual contact between the gas concentration indicator substance and the sensor, i. the radiation emanating from the gas concentration indicator substance must be receivable by the sensor, i. come directly or indirectly from the Gaskonzentrationsindikatorsubstanz to the sensor.
  • the sensor measures the concentration of at least one component of the atmosphere in the package.
  • the packaging is produced from a packaging material, in particular from one or more plastic films, of which at least one is preferably thermoformed, for example.
  • the gas concentration indicator substance preferably provided as a point, for example, connected to the packaging material.
  • the packaging material may be transparent or semitransparent and / or have a print, for example a logo or a product description. This imprint may partially or completely cover the packaging material.
  • the gas concentration indicator substance is preferably provided as a dot in the interior of the packaging, in particular imprinted.
  • the gas concentration indicator substance can already be present on the packaging material to be used or applied in the context of the packaging machine, for example printed and / or applied as a label.
  • a point in the sense of the invention is a discrete point which can have any desired shape.
  • the gas concentration indicator substance point may be linear, annular and / or circular or may have any other desired shape or may also be multi-part.
  • the point in the transport direction of the upper or lower film has a length of 8-14, preferably 10-12 mm.
  • the extent perpendicular thereto is preferably 8-14, preferably 10-12 mm.
  • a volume of a gas with a known composition a so-called “reference gas”
  • this gas-filled volume may be in the packaging, but need not be, for example, the gas volume in the seal chamber or at It is also necessary to provide in the gas volume the gas concentration indicator substance, namely the same gas concentration indicator substance provided in the package, the gas provided in the volume being preferably the gas mixture containing the air in the package
  • this value is then, for example, the setpoint value that is made available to a control / regulation and / or an evaluation unit, but it can also be a gas that a certain concentration one r component, for example, a gas which has no oxygen, for example N2 5.0. This gas is then used for zero point calibration.
  • the packaging material is provided between the sensor and the gas concentration indicator substance so that, for example, the radiation emanating from the gas concentration indicator substance has to penetrate the packaging material before it reaches the sensor.
  • a measurement error caused by the packaging material and / or its printing is eliminated.
  • exactly the portion of the packaging material is placed between the gas volume and the sensor, which will also be there during the actual measurement during the packaging process.
  • a package is filled with the reference gas and preferably sealed and then placed in the orientation in which it is also during the packaging process in the area of the sensor and then carried out the calibration.
  • the packaging can be empty or filled with a packaged product.
  • the concentration of at least one component of the gas is then measured and then, if appropriate, the display and / or a signal of the sensor are adapted to the composition of the reference gas.
  • the calibration is carried out after each change of a packaging material roll, but at least every time the packaging material used changes.
  • the gas volume used for the calibration is preferably provided in the packaging to be produced.
  • the packaging can be open or closed. In a closed package, for example, at least one lidding film is sealed to a packaging tray.
  • the calibration takes place within the packaging machine.
  • the actual packaging or parts of this packaging are produced and then preferably evacuated and / or flushed with the reference gas until it is ensured that this gas has completely filled the packaging or a specific packaging part, for example the deep-drawn packaging tray.
  • the reference gas may also be air, for example.
  • the calibration of the sensor can take place, for example, in the sealing chamber and / or downstream of the sealing chamber.
  • the packaging may be filled with a packaged item or be empty.
  • a temperature sensor for example a pyrometer, an infrared sensor and / or a fluorescence-based sensor, provided, for example, the temperature of the reference gas and / or the temperature of the gas in the package and / or the temperature of the indicator and / or the sensor and / or the packaging film measures.
  • the calibration is then carried out taking into account the respective temperature measurement, for example to obtain a meaningful, compensated for the temperature measurement result and to increase the accuracy of the measurement result.
  • the pressure in the packaging and / or the space surrounding the gas concentration indicator substance point is measured with a sensor and the measurements are used, for example, to process the signal measured by the sensor, in particular to eliminate the pressure influence, for example by the measured value with a reference value , possibly at another pressure was determined to make comparable.
  • the pressure and / or temperature measurement can also be used to calibrate the sensor to the prevailing at the packaging and / or storage temperature or the prevailing pressure.
  • the calibration measurement is performed multiple times.
  • these measurements are used to form an arithmetic mean, for example, which is then used to set the sensor.
  • the reference gas volume required for the calibration can also be made available separately and / or independently of the packaging machine. It is then necessary to provide only that part of the packaging material which will be between the sensor and the gas concentration indicator substance in the production of the packaging between the reference gas volume and the sensor and the calibration of the sensor can take place.
  • the senor is calibrated by the sensor determining the concentration of at least one component of a gas or gas mixture, the measurement taking place through the packaging material.
  • concentration of the component in the same volume of gas is determined without regard to the packaging material, for example by removing a part of the gas from the volume, in particular after the measurement with the sensor. Thereafter, the two measured values are compared and, if appropriate, the measurement result is adjusted through the packaging material to the reference measurement without packaging material.
  • the time between the gas exchange in the packaging and the measurement during calibration is taken into account.
  • This preferred embodiment of the present invention is of particular interest in packaging materials and / or packaging goods which release a certain gas component and / or adsorb and / or adsorb. The result conditional change of the reference gas composition can thereby be taken into account.
  • Yet another object of the present invention is a method for producing a package with a modified atmosphere, in which a top film is sealed to a packaging tray, wherein before the seal in the packaging tray creates a negative pressure and / or a replacement gas is introduced into the packaging tray and in which a measurement of a component of the changed atmosphere takes place with a sensor in which the sensor is calibrated according to the method according to the invention.
  • the present invention relates to a method for packaging a packaged product, in particular a foodstuff or another sensitive, for example sterile, packaged good, preferably in a plastic film, which may also be made of several layers and consisting of different materials.
  • the packaging comprises, for example, a deep-drawn packaging tray, which is filled with the packaged goods and then closed with at least one lid, in particular at least one lidding foil.
  • the lidding foil is sealed to the packaging tray.
  • a vacuum and / or a gas exchange is preferably carried out in the packaging trough. For this purpose, first of all the air in the packaging tray is sucked off, thereby generating a negative pressure in the packaging tray.
  • the replacement gas in particular an inert gas, for example, CO2 and / or N2 is preferably introduced into the packaging tray and thereby lowered the oxygen concentration in the packaging tray, which increases, for example, the shelf life of the packaged food.
  • the replacement gas in particular an inert gas, for example, CO2 and / or N2 is preferably introduced into the packaging tray and thereby lowered the oxygen concentration in the packaging tray, which increases, for example, the shelf life of the packaged food.
  • it is also possible to flush the atmosphere located in the packaging cavity with the replacement gas from the packaging ie to change the atmosphere in the packaging tray without prior generation of a negative pressure in the packaging tray.
  • the gas exchange / negative pressure can take place in and / or before the sealing station and before or preferably after filling the packaging tray with packaged goods.
  • the concentration of at least one constituent, for example the oxygen concentration, the changed atmosphere and / or its pressure is measured with a suitable sensor and the signal of this Sensor transmits to a control / regulation and / or evaluation of the packaging machine, which calculates therefrom the desired value for the negative pressure and / or the desired value for the pressure of the replacement gas after the gas exchange and / or the desired amount of replacement gas.
  • the signal from the sensor may also control only one valve which opens or closes access to the vacuum source and / or to the replacement gas source. This is done for example by a comparison with default values.
  • the quality of the replacement gas whose concentration can additionally / alternatively be measured / tested and / or evaluated according to the same measuring method, for example in the supply line of the replacement gas.
  • the oxygen content in the liquids present and / or the humidity and / or the water vapor content of the atmosphere for example in the steam evacuation process, can be measured in the package.
  • the energy consumption of a packaging machine can be reduced and / or the number of cycles can be increased.
  • packaging with an insufficient exchange atmosphere is avoided.
  • the signal of the sensor can be transmitted additionally or exclusively to a control / regulation and / or evaluation unit outside the packaging machine.
  • This so-called external control in turn communicates preferably at least with parts of the packaging machines and / or neighboring machines, for example with a labeling and / or ejection device, which act, for example, in the area of the packaging machine or behind, and / or also with machines of further processing and / or upstream processes.
  • the sensor with which the concentration of at least one component in the gas phase of the packaging is measured is calibrated before or during the packaging process according to the invention.
  • This is preferably done with packaging that has been produced by the packaging machine, and particularly preferably before and / or during the actual production process.
  • packages are produced with the packaging machine or with the method according to the invention, which can be filled or not filled with a packaged product.
  • the packages are filled before and / or after the gas-tight seal with a reference gas, for example, rinsed, and made with the sensor, the measurement as described and thereby calibrated.
  • a further sensor and / or a further Gaskonzentrationsindikatorsubstanz be provided which analyzes, for example, a gas stream which escapes from the sealing chamber and / or enters the sealing chamber, in particular analyzed at regular intervals.
  • a plurality of sensors for determining the concentration of at least one component in the gas phase of the packaging are preferably equally operated in a packaging machine, they are preferably all calibrated or, more preferably, only one sensor calibrated as a master sensor and its calibration result transmitted to the other sensors without them then still need to be calibrated individually.
  • the sensors are previously calibrated, preferably to a concentration, in order to preferably generate the same measurement results, which then enable a transmission of the calibration result of a sensor.
  • a leak test of the sealing chamber takes place before the calibration process in order to ensure that no unintentional gas volume penetrating, for example due to a leak, falsifies the measurement result.
  • a plausibility check takes place in which the operator manually and / or the control / regulation and / or the evaluation unit automatically checks the calibration value for plausibility, for example by setting the calibration value with an expected value in a previously determined target table / database is compared.
  • a nonsensical calibration value is taken over into the control, which can arise, for example, due to an unintentionally closed vacuum valve and / or an empty and / or insufficient gas supply.
  • the packaging machine is a Thermoformer Form Fill Seal machine, a chamber machine, a tray sealer and a flow wrapper.
  • the invention is explained below with reference to FIGS. 1-3. These explanations are merely exemplary and do not limit the general inventive concept. The explanations apply equally to all articles of the present invention.
  • FIG. 1 shows the packaging machine according to the invention
  • FIG. 2 shows the calibration and packaging method according to the invention
  • FIG. 3 shows a detail of the sealing chamber
  • FIG. 1 shows a packaging machine 1 on which the methods according to the invention can be carried out and which has a thermoforming station 2, a filling station 7 and a sealing station 15.
  • a plastic film web 8 the so-called lower film web, is withdrawn from a supply roll and, preferably cyclically transported along the packaging machine according to the invention here from right to left. At one cycle, the film web is transported on by one format length.
  • the packaging machine has two transport means (not shown), in the present case in each case two endless chains, which are arranged to the right and left of the film web.
  • Each endless chain has holding means, which cooperate with one edge of the film web.
  • Both at the beginning and at the end of the packaging machine at least one gear is provided for each chain in each case, around which the respective chain is deflected. At least one of these gears is driven.
  • the gears in the inlet region 19 and / or in the outlet region may be connected to one another, preferably by a rigid shaft.
  • Each means of transport has a multiplicity of clamping means which grasp the lower film web 8 in the inlet region in a clamping manner and transmit the movement of the transport means to the lower film web 8.
  • the clamping connection between the transport and the lower film web is released again.
  • the packaging trays 6 are formed in the lower film web 8.
  • the lower tool 4 is arranged on a lifting table 5, which, as symbolized by the double arrow, is vertically adjustable. Before each film feed, the lower tool 4 is lowered and then raised again. In the further course of the packaging machine, the packaging trays are then filled in the filling station 7 with the packaged goods 16.
  • the subsequent sealing station 19 which also consists of an upper tool 12 and a vertically adjustable lower tool 1 1, an upper film web is sealed to the packaging tray. Also in the sealing station, the upper tool and / or Lowered or raised the lower tool before and after each film transport.
  • the upper film web 14 may be deep-drawn and / or guided in means of transport or transported by transport chains, these means of transport then extending only from the sealing station and possibly downstream.
  • the sealing station preferably takes place a gas exchange, for example, to reduce the oxygen content of the atmosphere in the package.
  • a negative pressure is generated in the packaging, in particular before the gas exchange takes place.
  • the finished packages are also separated, which takes place with the cutting tools 17, 18.
  • the cutting tool 18 can also be lifted or lowered in the present case with a lifting device 9.
  • the packaging machine can also be a so-called tray sealer.
  • the packaging machine has at least one measuring device, for example a sensor 13, which reads out a gas concentration indicator substance within the packaging and thereby reads out the concentration, for example the oxygen concentration in the packaging or determines the presence of a certain pressure.
  • the sensor can also be used to analyze the behavior of the packaging under a temporary pressure.
  • the sensor may be located, for example, in the seal chamber or downstream thereof.
  • the sensor is a so-called radiation sensor that analyzes radiation emanating from the gas concentration indicator substance.
  • the gas concentration indicator substance for this purpose is excited with a radiation, in particular with visible light, and thereby or examined as to how the gas concentration indicator substance behaves. In this case, for example, it is possible to investigate the time until the gas concentration indicator substance emits radiation after the excitation. Alternatively or additionally, the frequency and / or amplitude of the received radiation can be analyzed.
  • the radiation of the gas concentration indicator substance provides information about the concentration, for example the oxygen concentration, of a substance in the gas phase of the packaging.
  • This sensor 13 must be calibrated in particular during a product change, ie when another product 16 is to be packed and / or when another packaging material 8, 14 is to be used and / or when another gas exchange atmosphere is to be selected.
  • a product change ie when another product 16 is to be packed and / or when another packaging material 8, 14 is to be used and / or when another gas exchange atmosphere is to be selected.
  • empty or filled packages are produced on the packaging machine, which has a known gas composition, the so-called reference gas. These packages are then transported from the packaging machine to the receiving area of the sensor 13 where they are stationary during a cycle of the packaging machine.
  • the gas phase of at least one, preferably a plurality of packages is analyzed by the sensor 13 and the result of one or more measurements is used to calibrate the sensor.
  • the measurement here the radiation is thereby influenced by the packaging material, here the top film 14 and taken into account in the calibration.
  • FIG. 2 shows the calibration and packaging method according to the invention.
  • This sealing station is also provided with a top film 14 which is unrolled from a roll and provided with a gas concentration indicator substance 21 during unrolling by a printer 26.
  • the gas concentration indicator substance per se can already be attached to the film.
  • the top film 14 is sealed to the packaging troughs 6, wherein previously a negative pressure in the packaging is generated and / or a gas exchange takes place, in which the air in the packaging is replaced by another gas to at least partially.
  • a sensor 22 Downstream of the sealing station, a sensor 22 is provided, which in the present case receives and analyzes radiation of the gas indicator substance, this radiation being dependent on the gas concentration of at least one component in the gas phase of the packaging.
  • the gas indicator substance 21 has previously been excited with a light source, such as an LED, which emits visible light.
  • a light source such as an LED
  • the light received by the sensor is analyzed and it is determined whether the gas phase has the desired concentration. If this is not the case, the produced packaging is discharged.
  • the sensor measures the concentration of at least one component of the gas phase, which measurement can be influenced by the top film web 14 through which it is measured. Should this be the case, the measured signal is adjusted to the known concentration of the reference gas, and thus calibrated the sensor 22, so that the worker or a controller receives the exact concentration of the gas component.
  • Figure 3 shows an embodiment in which the composition of the replacement gas provided from a bottle 25 is not known exactly.
  • the sealing chamber 1 1, 12 initially applied with a vacuum to reduce the existing air. Thereafter, the chamber is flushed with the replacement gas until an exhaust gas is formed, which is provided by a channel in which a sensor 24, in particular a reference sensor.
  • This reference sensor measures the concentration of at least one substance of the replacement gas.
  • the value determined thereby which is not influenced by a packaging film 8, 14, is used, for example, as a reference value for calibrating the sensor 22, which analyzes the gas indicator substance through a film web 14, whereby the measured value can be influenced by the film 14.

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  • Physics & Mathematics (AREA)
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  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Emergency Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Vacuum Packaging (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Cable Accessories (AREA)
  • Cartons (AREA)

Abstract

La présente invention concerne un procédé pour étalonner un capteur qui mesure au moins une composante d'une atmosphère gazeuse dans un emballage, lequel est fabriqué à partir d'un matériau d'emballage et dans lequel se trouve une substance indicatrice de concentration de gaz. Un volume d'un gaz ayant une composition connue est mis à disposition, dans lequel se trouve la substance indicatrice de concentration de gaz et le matériau d'emballage est disposé entre le capteur et la substance indicatrice de concentration de gaz. La concentration mesurée par le capteur est utilisée pour l'étalonnage du capteur en ce que l'indication et/ou un signal du capteur sont adaptés à la composition connue du gaz.
EP17700571.7A 2016-01-20 2017-01-19 Procédé pour étalonner un capteur destiné à relever une substance indicatrice de la concentration de gaz d'un emballage Pending EP3405403A1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
DE102016200749 2016-01-20
DE102016203876 2016-03-09
DE102016204085 2016-03-11
DE102016208441 2016-05-17
DE102016209207 2016-05-27
EP16175264 2016-06-20
DE102016212574 2016-07-11
DE102016213009 2016-07-15
DE102016213010 2016-07-15
PCT/EP2017/051065 WO2017125483A1 (fr) 2016-01-20 2017-01-19 Procédé pour étalonner un capteur destiné à relever une substance indicatrice de la concentration de gaz d'un emballage

Publications (1)

Publication Number Publication Date
EP3405403A1 true EP3405403A1 (fr) 2018-11-28

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ID=57821995

Family Applications (5)

Application Number Title Priority Date Filing Date
EP17700537.8A Active EP3405396B1 (fr) 2016-01-20 2017-01-17 Enveloppeuse en continu avec contrôle des emballages obtenus en vue de la détection de fuites et procédé de fabrication d'un emballage
EP17700570.9A Active EP3405765B1 (fr) 2016-01-20 2017-01-19 Procédé et dispositif de fabrication d'emballages à atmosphère modifiée et emballage correspondant
EP17700572.5A Active EP3405398B1 (fr) 2016-01-20 2017-01-19 Procédé de test de l'étanchéité d'un emballage fini
EP17700571.7A Pending EP3405403A1 (fr) 2016-01-20 2017-01-19 Procédé pour étalonner un capteur destiné à relever une substance indicatrice de la concentration de gaz d'un emballage
EP17700831.5A Pending EP3405397A2 (fr) 2016-01-20 2017-01-19 Procédé et machine d'emballage pour la fabrication d'emballages ayant une atmosphère modifiée et machine d'emballage avec un capteur pour mesurer une concentration d'une substance de la phase gazeuse dans un emballage

Family Applications Before (3)

Application Number Title Priority Date Filing Date
EP17700537.8A Active EP3405396B1 (fr) 2016-01-20 2017-01-17 Enveloppeuse en continu avec contrôle des emballages obtenus en vue de la détection de fuites et procédé de fabrication d'un emballage
EP17700570.9A Active EP3405765B1 (fr) 2016-01-20 2017-01-19 Procédé et dispositif de fabrication d'emballages à atmosphère modifiée et emballage correspondant
EP17700572.5A Active EP3405398B1 (fr) 2016-01-20 2017-01-19 Procédé de test de l'étanchéité d'un emballage fini

Family Applications After (1)

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EP17700831.5A Pending EP3405397A2 (fr) 2016-01-20 2017-01-19 Procédé et machine d'emballage pour la fabrication d'emballages ayant une atmosphère modifiée et machine d'emballage avec un capteur pour mesurer une concentration d'une substance de la phase gazeuse dans un emballage

Country Status (4)

Country Link
US (1) US10836521B2 (fr)
EP (5) EP3405396B1 (fr)
ES (3) ES2918006T3 (fr)
WO (5) WO2017125386A2 (fr)

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WO2020108943A1 (fr) * 2018-11-26 2020-06-04 Tetra Laval Holdings & Finance S.A. Procédé et appareil d'emballage pour former des emballages scellés
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IT201900006918A1 (it) 2019-05-16 2020-11-16 Ft System Srl Metodo ed apparato per la rivelazione di fughe da contenitori sigillati
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CN112158371A (zh) * 2020-11-24 2021-01-01 张瑞雪 一种多功能食品打包装置

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Publication number Publication date
EP3405765A2 (fr) 2018-11-28
EP3405396B1 (fr) 2022-03-16
EP3405398A1 (fr) 2018-11-28
ES2919792T3 (es) 2022-07-28
WO2017125484A1 (fr) 2017-07-27
WO2017125482A3 (fr) 2017-09-14
WO2017125483A1 (fr) 2017-07-27
WO2017125485A3 (fr) 2017-09-14
WO2017125386A3 (fr) 2017-08-31
ES2917188T3 (es) 2022-07-07
WO2017125386A2 (fr) 2017-07-27
EP3405765B1 (fr) 2022-03-16
US10836521B2 (en) 2020-11-17
WO2017125485A2 (fr) 2017-07-27
EP3405398B1 (fr) 2022-04-13
EP3405396A2 (fr) 2018-11-28
EP3405397A2 (fr) 2018-11-28
US20190023432A1 (en) 2019-01-24
ES2918006T3 (es) 2022-07-13
WO2017125482A2 (fr) 2017-07-27

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