EP3560845B1 - Machine et procede d'emballage permettant d'emballer des produits dans des emballages en matière plastique - Google Patents

Machine et procede d'emballage permettant d'emballer des produits dans des emballages en matière plastique Download PDF

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Publication number
EP3560845B1
EP3560845B1 EP19168882.9A EP19168882A EP3560845B1 EP 3560845 B1 EP3560845 B1 EP 3560845B1 EP 19168882 A EP19168882 A EP 19168882A EP 3560845 B1 EP3560845 B1 EP 3560845B1
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EP
European Patent Office
Prior art keywords
valve
line
measuring
gas
reception region
Prior art date
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EP19168882.9A
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German (de)
English (en)
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EP3560845A1 (fr
Inventor
Andreas Mader
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.)
Multivac Sepp Haggenmueller GmbH and Co KG
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Multivac Sepp Haggenmueller GmbH and Co KG
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    • 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
    • B65B31/025—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 specially adapted for rigid or semi-rigid containers
    • B65B31/028—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 specially adapted for rigid or semi-rigid containers closed by a lid sealed to the upper rim of the container, e.g. tray-like container
    • 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
    • B65B55/10—Sterilising wrappers or receptacles prior to, or during, packaging by liquids or gases
    • 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
    • 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

Definitions

  • the present invention relates to packaging machines for packaging products in plastic packaging according to claim 1 or claim 2 as well as methods for measuring the presence of a gas in a sealing station of a packaging machine for receiving a plastic packaging to be closed according to claims 8 or 11.
  • Packaging machines for packaging products in plastic packaging are already sufficiently known from the prior art. Machines are known with which food, such as sausage products or sliced cheese, can be placed in (deep-drawn) plastic packaging and the packaging can then be sealed with the food placed therein. Other applications, for example in the field of pharmaceutical technology, are also known for such machines.
  • the packaging machines comprise sealing stations which comprise a one-part or multi-part sealing tool into which the plastic packaging (with the product introduced) is introduced and then sealed with a film.
  • a gas is usually a sterilizing gas or at least a gas that prevents bacteria from multiplying, such as nitrogen. In principle, this gas is harmless when used in the food industry, but it can contribute to preservation.
  • it is known to evacuate the receiving area so as not to retain any gaseous residues at all in the receiving area while the plastic packaging is being sealed.
  • the EP 1 595 794 describes a device and a method for evacuating a chamber filled with a protective gas, in particular the sealing chamber of a packaging machine, the method comprising evacuating a buffer volume of gas. The concentration of one or more components of the gas is then measured. Alternatively, the chamber is connected to a vacuum source and the concentration of the components in the gas stream flowing to it is measured.
  • Difficulties can arise in determining when exactly the gassing process or the evacuation process of the receiving area is completed.
  • the sensors already used for this which are arranged in measuring lines that are connected to the receiving area, provide an indication of how much oxygen still remains in the receiving area.
  • the means and methods used up to now are imprecise, so that it is only possible to a limited extent to determine the ideal time to end the evacuation process or the fumigation. This is accompanied by an increased exclusion rate for products that have not been adequately fumigated or evacuated.
  • the technical problem to be solved consists in specifying a packaging machine and a method for measuring the presence of a gas in a sealing station of a packaging machine for receiving a plastic packaging to be closed, which enables an accurate determination of the residual amount of undesired gases in the receiving area enable and thus ensure the most exact possible setting of the duration of the gassing or evacuation.
  • connection point is to be understood here as the point at which the measuring line and the receiving area meet and there is a passage from the receiving area into the measuring line.
  • the area of the connection point in which the second shut-off valve is arranged basically comprises any points in the measuring line, the connection point itself also being included. However, this only refers to those points in the measuring line that are arranged upstream of the connecting line in the flow direction of a gas from the receiving area through the measuring line to the vacuum pump, so that when the first shut-off valve and the second shut-off valve are shut off, part of the measuring line and the measuring device is isolated from the rest of the measuring line and in particular from the receiving area and the vacuum pump. According to the invention, however, it is not necessary for the entire length of the measuring line to be isolated from the receiving area and the vacuum pump when the first and second shut-off valves are shut off.
  • This embodiment of the packaging machine allows the targeted evacuation of the measuring line and thus, as soon as the receiving area is evacuated, a reliable measurement of the gas mixture actually still contained in the receiving area.
  • any remaining amount of gas from a last cycle for packaging a plastic package can be effectively removed from the measuring line and the measuring line can be isolated during the gassing process and during the opening of the sealing tool for introducing a package into the receiving area, so that no undesired gas mixture collects in the measuring line, which could falsify the measurement result.
  • connection point and the area of the connection point as described with reference to the first embodiment, also apply to this embodiment.
  • the advantage is that although no vacuum pump is used, targeted gassing and isolation of the measuring line can take place while the sealing station is being opened and while the other components of the sealing station are being gassed. This also makes it possible to ensure that the measured value of the gas remaining in the receiving area is measured as reliably as possible.
  • the first embodiment and the second embodiment are to be understood as alternatives to one another, but allow the solution of the problem formulated above equally for different implementations of the packaging machine.
  • the measuring device is a measuring device for measuring molecular oxygen or comprises such a measuring device. Since oxygen is one of the most relevant gases when it comes to possible contamination of products, one of the most important sources of contamination of products in plastic packaging can be eliminated with this embodiment, which improves the shelf life.
  • the discharge line comprises at least two separate lines which are each connected to the receiving area at different connection points and wherein a valve is arranged in each line.
  • the connection points are preferably different from the connection point of the measuring line with the receiving area, but can also partially coincide. This embodiment advantageously allows evacuation or continuous gassing of different areas of the Receiving area of the sealing station, so that the gassing / evacuation covers the receiving area as completely as possible.
  • the lines coincide at a connection point after the valves and form a common line, the measuring line being connected to the common line via the connecting line. If a vacuum pump is connected to the common line, the complexity of the packaging machine can be reduced. If no vacuum pump is provided, the common line can be open to the environment, for example.
  • a second valve is arranged in the supply line.
  • This valve can be used to specifically open or block the supply line for the gas that is used for the gassing. In this way, the "dead volume" of gassing gas that remains in the supply line after the end of the gassing process can be reduced. Falsification of the result of the value measured by the measuring device can thus be avoided.
  • the sealing station is designed as a two-part sealing tool with an upper tool and a lower tool and the upper tool and the lower tool enclose the receiving area in the closed state. This is a particularly preferred embodiment in terms of design.
  • This embodiment ensures that the measuring line is insulated as completely as possible while the gassing or the opening of the receiving area take place. A falsification of the gas measured in the measuring process by means of the measuring device can thus be avoided as far as possible, which increases the accuracy of the measured result and can advantageously be used to minimize rejects.
  • the method furthermore comprises step k) after step g), step k) comprising processing the value measured by the measuring device and, depending on the measured value, first closing the second shut-off valve and then step b) to g) are executed.
  • step k) comprising processing the value measured by the measuring device and, depending on the measured value, first closing the second shut-off valve and then step b) to g) are executed.
  • the method further comprises step m) after step d) and before step e) and step n) after step e) and before step f), step m) opening a second valve in the supply line and step n) comprises closing the second valve in the supply line.
  • step c) is preferably ended before the first and second shut-off valves are opened, since otherwise the measuring line would be flooded with the gassing gas, which can falsify the measurement.
  • the most accurate possible measurement of the gas remaining in the receiving area can also be implemented for embodiments of packaging machines without a vacuum pump.
  • step c) the pressure within the discharge line remains essentially constant. This can be achieved either by arranging a pump downstream of the receiving area at the end of the discharge line, the throughput of which corresponds to the supply via the supply line, or by having the discharge line open to the atmosphere in some other way. Overpressure, which might be detrimental to the valves, can thus be avoided.
  • the method comprises step o) after step b) and before step c) and step p) after step c) and before step d), step o) opening a second valve in the supply line and Step p) comprises closing the second valve in the supply line.
  • the dead volume of gassing gas in the supply line can be reduced, so that falsification of the result when measuring with the aid of the measuring device can be avoided.
  • the method according to the invention can furthermore include that the plastic packaging is sorted out or further processed as a function of values measured by the measuring device. If, for example, it is determined that the amount of the remaining gas cannot be brought below a certain threshold value, the packaging can be sorted out in order not to pass on any product that may have already been spoiled.
  • the methods include step i), step i) including sealing the plastic packaging in the receiving area and step i) after measuring the gas in the measuring line by means of the measuring device or after closing the first and second Shut-off valve is carried out.
  • step i) including sealing the plastic packaging in the receiving area and step i) after measuring the gas in the measuring line by means of the measuring device or after closing the first and second Shut-off valve is carried out.
  • the figure shows an embodiment of the packaging machine according to the invention.
  • the figure shows part of a packaging machine 100 which comprises at least one sealing station 101.
  • the sealing station is usually designed in such a way that it has a receiving area 111 into which a packaging 160 with the product usually located therein can be introduced and closed with the aid of a suitable sealing tool.
  • the sealing station 101 can be designed in two parts, which is usually implemented in the form of an upper tool 112 and a lower tool 113, the upper tool 112 and the lower tool 113 together including the receiving area 111 in the closed state.
  • the lower tool can essentially have a depression or other recess for receiving the packaging 160, whereas the actual sealing tool with the sealing plate and a possibly necessary heating element is arranged in the upper tool 112.
  • the receiving area 111 is connected to a supply line 120.
  • this supply line can preferably be connected to the lower tool 113.
  • a connection with the upper tool is also conceivable.
  • the lower tool 113 is designed to be immovable and if only the upper tool 112 is moved relative to it, the connection of the supply line to the lower tool 113 is preferred.
  • the receiving area is connected to at least one discharge line 130 at a connection point 135.
  • the discharge line 130 is in turn connected to a vacuum pump 133 and, according to an alternative embodiment of the invention, is open to the atmosphere, for example.
  • the discharge line 130 further includes a first valve 131. This can be controlled, opened and closed, for example, with the aid of a control unit assigned to the packaging machine.
  • further derivation can also be provided, which are connected to the receiving area at different connection points 136.
  • a further derivative 132 can also be connected to the upper tool 112 connected.
  • further leads not shown here, can be provided, which can also be connected to the lower tool 113, for example.
  • all of these discharge lines comprise corresponding valves 134.
  • additional branches 150 of the individual discharge lines can be provided upstream of the valves 131 and 134 in order, for example, to feed the gas that is used in the fumigation to recycling or the like.
  • the receiving area 111 is connected to a measuring line 140 at a connection point 144.
  • the measuring line 140 in turn comprises a measuring device 143 at the end opposite the connection point 144 in order to measure the presence and preferably also the amount of gas in the gas mixture conveyed through the measuring line 140.
  • the measuring device 143 can be a measuring device that is designed to measure the presence and / or the concentration of (molecular) oxygen in a gas mixture.
  • the measuring device can work chemically or preferably optically and ensure that gases are detected as precisely as possible.
  • the measuring line can assume any dimensions compared to the supply line and / or the outlets, it is particularly preferred if the measuring line has the smallest possible diameter, preferably less than 50% of the diameter of the outgoing line 130, particularly preferably less than 5 mm .
  • the connecting line 150 can be dimensioned in such a way that the gases can be discharged from the measuring line as quickly as possible.
  • the connecting line therefore preferably has at least the same diameter as the measuring line or a larger diameter.
  • the measuring line 140 is also connected via a connecting line 150 to a region of the discharge line 130 downstream of the valve 131 in the flow direction of a gas from the supply line 120 to the vacuum pump 133 (or to the atmosphere in embodiments without a vacuum pump).
  • a first shut-off valve 141 is arranged in the connecting line 150.
  • the measuring line is connected to a second shut-off valve 142 in an area around the connection point 144 with the receiving area 111.
  • the second shut-off valve 142 does not have to be located exactly at the connection point 144, but can also be located downstream within the measuring line 140.
  • a second valve 121 which enables the supply line to be shut off, can also be arranged in the supply line 120. In this way, part of the feed line and the receiving area 111 can be isolated from further inflow of the gassing gas.
  • a vacuum pump 133 is arranged at the end of the discharge line 130 or the (common) discharge line 180 or this line is open to the atmosphere, there are two embodiments according to the invention for the method for measuring the in the measuring line or specifically in the Receiving area 111 remaining gases.
  • a vacuum pump is available, the procedure described below is carried out.
  • a plastic packaging 160 to be closed is inserted into the receiving area 111 . This can be done, for example, by moving the upper or lower sealing tool 112, 113 or both in the case of the two-part design of the sealing station in order to open an area through which the packaging can reach the receiving area.
  • a next step b) the valve 131 in the discharge line 130 or the valves in the corresponding discharge lines are opened and the receiving area is evacuated by the vacuum pump via the discharge lines with the opened valves 131 and 134 in a step c).
  • the vacuum pump 133 is turned on. If a desired pressure, for example 0.01 hPa, is reached, the vacuum pump is switched off again. Another event, such as the expiry of a certain period of time, can also be used to regulate the switching off of the vacuum pump.
  • step d) the valve 131 in the discharge line 130 (or all valves in all compartments) is closed. This is followed by gassing the receiving area 111 via the supply line 120 in step e). If a second valve 121 is provided in the supply line, then step e) firstly comprises opening this valve 121 and then, after the gassing has been completed, closing this valve. The opening of the second valve can be interpreted as step m), the closing of the second valve 121 as step n).
  • the second shut-off valve 142 is now opened in a step f) so that the gas can flow out of the receiving area into the measuring line 140.
  • step g) the gas within the measuring line is measured with the aid of the measuring device, as far as it has reached the measuring device.
  • the composition of the entire gas mixture or just specific gases can be measured.
  • the measuring device can be designed as an optical measuring device and can measure molecular oxygen in step g).
  • the measurement is preferably also carried out in a quantity-sensitive manner, so that after the conclusion of step g) it is also known how much of the measured gas is proportionately in the gas mixture or how high the absolute amount of gas in the receiving area 111 is.
  • step h) following step g), the second shut-off valve 142 is closed and the first shut-off valve 141 is opened.
  • the measuring line is evacuated with the aid of the vacuum pump 133 (while the valves 131, 134 are closed) before the first shut-off valve in the connecting line 150 is also closed and the method can start again with step a).
  • step h) and performing step a) again it can be provided that the packaging is now finally sealed in the sealing station and removed from the sealing station before another plastic packaging 160 is introduced into the sealing station.
  • step g) it is first determined whether a certain value for the concentration of a gas in the measuring line has been reached. For example, it can be provided that a maximum value of the oxygen remaining in the receiving area (amount or concentration) is specified and the value measured by the measuring device is used to determine whether this maximum value has been undershot or exceeded. This can be achieved in a simple manner by subtracting the measured value from the limit value. If it is determined that the measured value is above the maximum value, steps b) to g) can be carried out again, whereby, before step b) is carried out, the measuring line is first evacuated again, for example by closing the second shut-off valve and that first shut-off valve is opened. Through the renewed evacuation and gassing cycle of the receiving area the amount of oxygen still present, for example, can be reduced.
  • a certain value for the concentration of a gas in the measuring line has been reached. For example, it can be provided that a maximum value of the oxygen remaining in the receiving area (amount or concentration) is specified and the value measured by the measuring device is used
  • this initially comprises that in a step a), while the valve 130, 134 and the first and second shut-off valves 141, 142 are closed, a plastic packaging 160 to be closed, which is introduced into the receiving area 111.
  • step b) the valve 131, 134 in the discharge line 130, 131 is opened and in the subsequent step c) gassing of the receiving area 111 takes place via the supply line 120.
  • a second valve 121 provision can again be made for a second valve 121 to be opened in the feed line 120 before step c) and to be closed after the end of the gassing.
  • step d) now follows, in which the first and second shut-off valves are opened and, if necessary, gassing continues to take place in the receiving area, so that a gas flow containing a gas mixture occurs through the discharge line and also the first and second shut-off valve, which consists of a mixture of the gas that is used for gassing (for example nitrogen) and the gas mixture originating from the receiving area.
  • the gassing can be ended before the next step e), which comprises measuring the gas in the measuring line by means of the measuring device, in order to reduce a gas flow through the measuring line as much as possible. Since the measurement of the gas in the measurement line will ultimately mean an integration of individual measurement points over time, a falsification due to additional entry of gas can be avoided.
  • step f) The first and second shut-off valves are then closed in step f).
  • step f) and performing step a) again the sealing station 101 can now be opened analogously to the embodiment in the presence of a vacuum pump in order to remove the packaging 160 after sealing and insert a new packaging according to step a).
  • the discharge lines are open to the atmosphere and thus the pressure within the discharge line (and therefore also in the measuring line) remains essentially constant during the gassing. This ensures that the partial pressures of certain gases can be reliably measured with the aid of a suitable measuring device, so that the gas to be measured, for example oxygen, can be reliably determined.
  • step c) can include a second valve 121 in the supply line being opened before the actual gassing and after gassing, which is not necessary after step c), but also only after the step d) may be the case, is closed.
  • both described embodiments have in common that further processing of the plastic packaging can take place depending on the measured value of the measuring device.
  • the gassing and evacuation can be carried out again if the vacuum pump is present.
  • the plastic packaging is not even sealed when the limit value is exceeded, but rather is sorted out.
  • Other methods such as the separate labeling of a corresponding packaging, are also conceivable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Vacuum Packaging (AREA)

Claims (15)

  1. Machine d'emballage (100) pour l'emballage de produits dans des emballages en matière plastique (160), avec
    - au moins une station de scellage (101) pour recevoir un emballage en matière plastique (160) à sceller, la station de scellage ayant une zone de réception (111) à l'intérieur de la station de scellage dans laquelle un emballage en matière plastique (160) peut être reçu,
    - une conduite d'alimentation (120) permettant d'acheminer un gaz vers la zone de réception (111),
    - une conduite de décharge (130, 132) avec laquelle un gaz peut être évacué de la zone de réception (111), une vanne (131, 134) étant disposée dans la conduite de décharge,
    - une pompe à vide (133) qui est raccordée à la conduite de refoulement (130, 132) et qui peut pomper le gaz de la zone de réception (111) via la vanne (131, 134) de la conduite de refoulement,-
    - une conduite de mesure (140) qui est reliée à la zone de réception (111) en un point de raccordement (144) et qui comporte à l'extrémité opposée à la zone de réception un dispositif de mesure (143) avec lequel un gaz peut être détecté,
    caractérisé en ce que la conduite de mesure (140) est reliée à la conduite de refoulement dans une zone entre la vanne et la pompe à vide par une conduite de raccordement (150) et une première vanne d'arrêt (141) est disposée dans la conduite de raccordement, la conduite de mesure comprenant une deuxième vanne d'arrêt (142) dans la zone du point de raccordement (144).
  2. Machine d'emballage (100) pour l'emballage de produits dans des emballages en matière plastique, comprenant:
    - au moins une station de scellage (101) pour recevoir un emballage en matière plastique (160) à sceller, la station de scellage ayant une zone de réception (111) à l'intérieur de la station de scellage dans laquelle un emballage en matière plastique (160) peut être reçu,
    - une conduite d'alimentation (120) permettant d'acheminer un gaz vers la zone de réception (111),
    - une conduite de décharge (130, 132) avec laquelle un gaz peut être déchargé de la zone de réception (111), une vanne (132, 134) étant disposée dans la conduite de décharge,
    - une conduite de mesure (140) qui est reliée à la zone de réception (111) en un point de raccordement (144) et qui, à l'extrémité opposée à la zone de réception, comporte un dispositif de mesure (143) avec lequel un gaz peut être détecté,
    caractérisé en ce que la conduite de mesure (140) est reliée à l'écoulement dans une zone en aval de la vanne par une conduite de raccordement (150) et une première vanne d'arrêt (141) est disposée dans la conduite de raccordement, la conduite de mesure comprenant une deuxième vanne d'arrêt (142) dans la zone du point de raccordement.
  3. Machine d'emballage (100) selon la revendication 1, dans laquelle le dispositif de mesure (143) est ou comprend un dispositif de mesure pour mesurer l'oxygène moléculaire.
  4. Machine d'emballage (100) selon l'une quelconque des revendications 1 à 3, dans laquelle la vidange comprend au moins deux conduites séparées (130, 132), chacune étant reliée à la zone de réception (111) en différents points de raccordement (135, 136) et dans laquelle une vanne (131, 134) est disposée dans chaque conduite.
  5. Machine d'emballage (100) selon la revendication 4, dans laquelle les deux lignes séparées (130, 132) coïncident à un point de connexion après les vannes (131, 134) et forment une ligne commune (180) dans laquelle la conduite de mesure (140) est reliée à la ligne commune par la ligne de raccordement (150).
  6. Machine d'emballage (100) selon l'une des revendications 1 à 5, dans laquelle une deuxième vanne (121) est disposée dans la conduite d'alimentation (120).
  7. Machine d'emballage (100) selon l'une des revendications 1 à 6, dans laquelle la station de scellage (101) est conçue comme un outil de scellage en deux parties avec un outil supérieur (112) et un outil inférieur (113) et dans laquelle l'outil supérieur et l'outil inférieur entourent la zone de réception (111) à l'état fermé.
  8. Procédé de mesure de la présence d'un gaz dans une station de scellage d'une machine d'emballage (100) destinée à recevoir un emballage en matière plastique (160) à sceller, la station de scellage ayant une zone de réception dans la station de scellage dans laquelle un emballage en matière plastique (160) peut être reçu, la machine d'emballage (100) comprenant en outre
    - une conduite d'alimentation (120) permettant d'acheminer un gaz vers la zone de réception (111),
    - une conduite de décharge (130, 132) avec laquelle un gaz peut être évacué de la zone de réception (111), une vanne (131, 134) étant disposée dans la conduite de décharge,
    - une pompe à vide (133) qui est raccordée à la conduite de refoulement et qui peut pomper le gaz de la zone de réception via la vanne de la conduite de refoulement,
    - une conduite de mesure (140) qui est reliée à la zone de réception (111) en un point de raccordement (144) et qui comporte à l'extrémité opposée à la zone de réception un dispositif de mesure (143) avec lequel un gaz peut être détecté,
    et dans lequel la conduite de mesure (140) est reliée à l'écoulement dans une zone entre la vanne et la pompe à vide par une conduite de raccordement (150) et une première vanne d'arrêt (141) est disposée dans la conduite de raccordement, la conduite de mesure présentant une deuxième vanne d'arrêt (142) dans la zone du point de raccordement;
    le procédé comprenant les étapes suivantes:
    a) introduire un emballage en matière plastique (160) à sceller dans la zone de réception (111) pendant que la vanne et les première et deuxième vannes d'arrêt (141, 142) sont fermées,
    b) ouverture de la vanne (131) dans la conduite de refoulement (130),
    c) évacuation de la zone de ramassage (111) par le drain à l'aide de la pompe à vide (133),
    d) fermeture de la vanne dans la conduite de décharge (130),
    e) rinçage au gaz de la zone d'enregistrement (111) par la conduite d'alimentation (120),
    f) ouverture de la deuxième vanne d'arrêt (142),
    g) mesure du gaz dans la conduite de mesure (140) au moyen de l'instrument de mesure (143),
    h) fermeture de la deuxième vanne d'arrêt (142) et l'ouverture de la première vanne d'arrêt (141) et l'évacuation de la conduite de mesure (140) au moyen de la pompe à vide (133).
  9. Procédé selon la revendication 8, comprenant en outre l'étape k) après l'étape g), dans lequel l'étape k) comprend le traitement de la valeur mesurée par le dispositif de mesure (143) et, en fonction de la valeur mesurée, d'abord la deuxième vanne d'arrêt (142) est fermée et ensuite les étapes b) à g) sont effectuées.
  10. Procédé selon les revendications 8 ou 9, comprenant en outre l'étape m) après l'étape d) et avant l'étape e) et l'étape n) après l'étape e) et avant l'étape f), dans lequel l'étape m) comprend l'ouverture d'une deuxième vanne (121) dans la ligne d'alimentation (120) et l'étape n) comprend la fermeture de la deuxième vanne dans la ligne d'alimentation.
  11. Procédé de mesure de la présence d'un gaz dans une station de scellage d'une machine d'emballage (100) destinée à recevoir un emballage en matière plastique à sceller, la station de scellage ayant une zone de réception (111) à l'intérieur de la station de scellage dans laquelle un emballage en matière plastique (160) peut être reçu, la machine d'emballage (100) comprenant en outre:
    - une conduite d'alimentation (120) permettant d'acheminer un gaz vers la zone de réception (111),
    - une conduite de décharge (130) avec laquelle un gaz peut être déchargé de la zone de réception (111), une vanne (131) étant disposée dans la conduite de décharge,
    - une conduite de mesure (140) qui est reliée à la zone de réception (111) en un point de raccordement (144) et qui comporte à l'extrémité opposée à la zone de réception un dispositif de mesure (143) avec lequel un gaz peut être détecté,
    et dans lequel la conduite de mesure (140) est reliée à l'écoulement dans une zone en aval de la vanne par une conduite de raccordement (150) et une première vanne d'arrêt (141) est disposée dans la conduite de raccordement, la conduite de mesure comportant une deuxième vanne d'arrêt (142) dans la zone du point de raccordement (150) ;
    le procédé comprenant les étapes suivantes:
    a) placement d'un emballage en matière plastique (160) à sceller dans la zone de réception (111) pendant que la vanne (131) et les première et deuxième vannes d'arrêt (141, 142) sont fermées,
    b) ouverture de la vanne (131) dans la conduite de refoulement (130),
    c) rinçage au gaz de la zone d'enregistrement (111) par la conduite d'alimentation (120),
    d) ouverture des première et deuxième vannes d'arrêt (141, 142),
    e) mesure du gaz dans la conduite de mesure (140) au moyen de l'instrument de mesure (143),
    f) fermeture des première et deuxième vannes d'arrêt (141, 142).
  12. Procédé selon la revendication 11, dans laquelle, pendant l'étape c), la pression à l'intérieur du by-pass (130) reste sensiblement constante.
  13. Procédé selon les revendications 11 ou 12, comprenant en outre l'étape o) après l'étape b) et avant l'étape c) et l'étape p) après l'étape c) et avant l'étape d), dans lequel l'étape o) comprend l'ouverture d'une deuxième vanne (121) dans la ligne d'alimentation (120) et l'étape p) comprend la fermeture de la deuxième vanne dans la ligne d'alimentation.
  14. Procédé selon l'une des revendications 8 à 13, dans laquelle l'emballage en matière plastique (160) est trié ou traité ultérieurement en fonction de la valeur mesurée par l'appareil de mesure (143).
  15. Procédé selon l'une des revendications 8 à 14, comprenant en outre l'étape i), dans lequel l'étape i) comprend le scellement de l'emballage en matière plastique (160) dans la zone de réception (111) et l'étape i) est réalisée après avoir mesuré le gaz dans la conduite de mesure (140) au moyen du dispositif de mesure (143) ou après avoir fermé les première et deuxième vannes d'arrêt (141, 142).
EP19168882.9A 2018-04-27 2019-04-12 Machine et procede d'emballage permettant d'emballer des produits dans des emballages en matière plastique Active EP3560845B1 (fr)

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DE102018110227.5A DE102018110227A1 (de) 2018-04-27 2018-04-27 Verpackungsmaschine zum Verpacken von Produkten in Kunststoffverpackungen

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US (1) US11040795B2 (fr)
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CN (1) CN110406721B (fr)
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EP3560845A1 (fr) 2019-10-30
DE102018110227A1 (de) 2019-10-31
ES2850076T3 (es) 2021-08-25
US11040795B2 (en) 2021-06-22
CN110406721B (zh) 2021-04-09
US20190329923A1 (en) 2019-10-31
CN110406721A (zh) 2019-11-05

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