EP4345019A1 - Maschine und verfahren zur herstellung von mit einem produkt gefüllten und versiegelten behältern - Google Patents

Maschine und verfahren zur herstellung von mit einem produkt gefüllten und versiegelten behältern Download PDF

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Publication number
EP4345019A1
EP4345019A1 EP23195676.4A EP23195676A EP4345019A1 EP 4345019 A1 EP4345019 A1 EP 4345019A1 EP 23195676 A EP23195676 A EP 23195676A EP 4345019 A1 EP4345019 A1 EP 4345019A1
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EP
European Patent Office
Prior art keywords
valve
configuration set
drying chamber
tank
machine
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
EP23195676.4A
Other languages
English (en)
French (fr)
Inventor
Enrico Bernardi
Fabio BIRELLO
Alessandro CRISTOFORI
Federico LIMONGELLI
Giovanni SORICELLI
Enrico VERSARI
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.)
Ipi SRL
Original Assignee
Ipi SRL
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 Ipi SRL filed Critical Ipi SRL
Publication of EP4345019A1 publication Critical patent/EP4345019A1/de
Pending legal-status Critical Current

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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
    • 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
    • B65B55/103—Sterilising flat or tubular webs
    • 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

Definitions

  • the present invention regards a machine for producing containers filled with a product and sealed, starting from a web of packaging material.
  • the present invention regards a machine of the type comprising:
  • the bath may contain a sterilizing and/or sanitizing liquid for performing an action of sterilization and/or sanitization of the web of packaging material.
  • the air that is introduced into the forming chamber is designed to bring about a controlled atmosphere both in the forming chamber and in the drying chamber, which is at a pressure higher than the pressure of the external environment so as to guarantee isolation of said chambers from the environment itself.
  • the present applicant has noted that, once installed in the plant in which they are to operate, the above machines are unable to reproduce the working conditions previously defined during testing.
  • the pressures within the two chambers namely, the forming chamber and the drying chamber, may be lower or else higher than the reference ones, this leading to a different development of the actions of maintenance of the sterility/sanitation and drying of the web of packaging material.
  • a first position is said to be "upstream” of a second position when the first position precedes the second position with reference to the direction of feed of the object; vice versa, the second position is said to be “downstream” of the first position in so far as it follows the first position once again with reference to the direction of feed of the object.
  • “Operation” of a machine comprises one or more cleaning cycles, referred to as cleaning-in-place (CIP) cycles, where the machine is cleaned of the product, in particular in the areas of contact, one or more sterilization cycles, referred to as sterilization-in-place (SIP) cycles, where the cleaned machine is further sterilized to remove bacteria and contaminating agents, one or more production cycles for the production proper of the end product, and one or more cycles of machine stoppage in which one or more parts of the machine are stopped for carrying out interventions of various types.
  • the aforesaid cycles may alternate in any order, random or periodic, during operation of the machine. Two cycles having the same function may succeed one another or be separated by at least one cycle having a different function.
  • the present invention concerns a machine for producing containers filled with a product and sealed, starting from a web of packaging material.
  • the machine preferably comprises a system for supplying the web of packaging material.
  • the system for supplying the web is designed to feed the web of packaging material along a work path.
  • the machine preferably comprises a tank, set along the work path, for containing a bath, immersed in which is the web of packaging material that advances along said work path.
  • the bath contains at least one between a sterilizing liquid and a sanitizing liquid.
  • the machine preferably comprises a drying chamber.
  • the drying chamber is set downstream of the tank along the work path.
  • the drying chamber is in fluid communication with the tank.
  • the drying chamber is equipped with at least one drying device, in particular for drying the web of packaging material that advances along the work path.
  • the machine preferably comprises a forming chamber.
  • the forming chamber is set downstream of the drying chamber along the work path.
  • the forming chamber is in fluid communication with the drying chamber.
  • the forming chamber is equipped with a forming device for forming the web so as to obtain the containers.
  • the machine preferably comprises an air-suction unit.
  • the air-suction unit is connected to the drying chamber.
  • the air-suction unit is connected to the tank.
  • the machine preferably comprises a sensor for detecting a pressure inside the drying chamber.
  • the machine preferably comprises a control unit.
  • the control unit is connected to the air-suction unit.
  • control unit is configured for starting a calibration step, preferably as a function of a state signal, which in particular indicates an operating state of the machine.
  • control unit is configured for varying, during the calibration step, at least one operating parameter of the air-suction unit, preferably as a function of a pressure signal, which in particular indicates the pressure inside the drying chamber, preferably to identify an effective value of said operating parameter.
  • the effective value of said operating parameter determines a desired pressure inside the drying chamber.
  • said effective value is contained within a range of optimal values of said operating parameter; preferably, said optimal values determine a pressure close to the desired pressure inside the drying chamber.
  • control unit is configured for operating the air-suction unit during operation of the machine.
  • control unit is configured for setting the operating parameter substantially at said identified effective value, during operation of the machine.
  • control unit is configured for setting the operating parameter substantially at said identified effective value, during a step of machine stoppage.
  • the machine is able to identify automatically an optimal set-up thereof that will take into account all the specificities of the installation layout of the machine and of the working environment in which it is installed, as well as the possible variations.
  • the present invention concerns a method for producing containers filled with a product and sealed, starting from a web of packaging material.
  • the method comprises the step of feeding the web of packaging material along a work path.
  • the method comprises the step of immersing the web of packaging material within a bath contained in a tank, which is preferably set along said work path.
  • the method comprises the step of drying the web of packaging material inside a drying chamber, which is preferably set downstream of the tank along the work path and is preferably in fluid communication with said tank.
  • the method comprises the step of forming the web to obtain said containers, preferably inside a forming chamber, preferably set downstream of the drying chamber along the work path and preferably in fluid communication with the drying chamber.
  • the method comprises the step of drawing air from the drying chamber, preferably via an air-suction unit.
  • the method comprises the step of drawing air from the tank, preferably via an air-suction unit.
  • the method comprises the step of detecting a pressure inside the drying chamber.
  • the method comprises the step of generating a pressure signal, which in particular indicates the pressure detected inside the drying chamber.
  • the method comprises the step of starting a calibration step, preferably as a function of a state signal, which in particular indicates an operating state of the machine.
  • the method comprises the step of varying, during the calibration step, at least one operating parameter of the air-suction unit, preferably as a function of the pressure signal, preferably to identify an effective value of the operating parameter, in particular said effective value determining a desired pressure inside the drying chamber.
  • the method comprises, during operation of the machine, the step of operating the air-suction unit, preferably by setting the operating parameter substantially at said identified effective value.
  • the method comprises, during a step of machine stoppage, the step of operating the air-suction unit, preferably by setting the operating parameter substantially at said identified effective value.
  • the method described herein enables fast and automatic identification of an optimal set-up of the machine, which will take into account all the specificities of the installation layout of the machine itself and of the environment in which it is installed, i.e., of the working conditions (whether constant or variable) that affect operation of the machine.
  • the present invention may comprise one or more of the characteristics described in what follows.
  • the machine comprises a compression unit.
  • the compression unit is designed to supply pressurized air into the forming chamber.
  • the machine comprises a first valve for controlling fluid communication between said drying chamber and said air-suction unit. In one or more embodiments, the machine comprises a second valve for controlling fluid communication between said tank and said air-suction unit.
  • the machine comprises a memory unit.
  • stored in the memory unit are at least one first configuration set that comprises respective operating parameters of said first and second valves and a second configuration set that comprises respective operating parameters of said first and second valves.
  • control unit is configured for operating selectively said first and second valves according to the first configuration set and according to the second configuration set, preferably as a function of a filling signal, which in particular indicates a state of filling of said tank.
  • the machine described herein is able to guarantee stable conditions inside the two chambers, namely the drying chamber and the forming chamber, during the entire period of operation of the machine, in a simple and reliable way, without the need to provide a continuous feedback control based upon a direct measurement of the pressure inside the two chambers.
  • stored in said memory unit is a third configuration set comprising respective operating parameters of said first and second valves.
  • control unit is configured for operating said first and second valves according to the third configuration set, preferably as a function of said filling signal.
  • the machine comprises a drying tunnel, in particular for drying the web of packaging material.
  • the drying tunnel extends along the work path.
  • the drying tunnel connects together the drying chamber and the forming chamber.
  • the machine described herein is able to dry the packaging web in an effective way, at the same time maintaining large production volumes.
  • the method comprises the step of supplying pressurized air into the forming chamber, preferably via a compression unit.
  • the operating state of the machine corresponds to one between a state of starting of said machine and a state in which the bath is absent from the tank.
  • the method comprises the step of controlling fluid communication between the drying chamber and the air-suction unit, preferably via a first valve.
  • the method comprises the step of controlling fluid communication between the tank and the air-suction unit, preferably via a second valve.
  • the step of controlling fluid communication between the drying chamber and the air-suction unit and between the tank and the air-suction unit includes extracting, for example from a memory unit, a configuration set comprising respective operating parameters of said first and second valves, preferably as a function of a filling signal, which in particular indicates a state of filling of the tank.
  • the step of controlling fluid communication between the drying chamber and the air-suction unit and between the tank and the air-suction unit includes operating the first valve and the second valve according to the configuration set extracted from the memory unit.
  • the method described herein guarantees stable conditions inside the two chambers, namely the drying chamber and the forming chamber, during the entire period of operation of the machine, in a simple and reliable way, without the need to provide a continuous feedback control based upon a direct measurement of the pressure inside the two chambers.
  • said configuration set comprises a respective first operating parameter, preferably for controlling a section of flow of the first valve. In one or more embodiments, said configuration set comprises a respective second operating parameter, preferably for controlling a section of flow of the second valve.
  • extracting a configuration set includes selectively extracting one between a first configuration set and a second configuration set, preferably as a function of the filling signal.
  • the first configuration set preferably comprising respective operating parameters of the first and second valves
  • the second configuration set preferably comprising respective operating parameters of the first and second valves, is extracted when the filling signal indicates a state of zero filling of the tank.
  • a first operating parameter of the second configuration set controls a section of flow of the first valve so that it will be smaller than a section of flow of said first valve controlled by a first operating parameter of the first configuration set.
  • a second operating parameter of the second configuration set controls a section of flow of the second valve so that it will be larger than a section of flow of said second valve controlled by a second operating parameter of the first configuration set.
  • extracting a configuration set includes extracting, for example from a memory unit, a third configuration set, preferably as a function of the filling signal, in an even more preferred way when said filling signal indicates a state of incomplete filling of the tank.
  • the third configuration set comprises respective operating parameters of said first and second valves.
  • a first operating parameter of the third configuration set controls a section of flow of the first valve so that it will be comprised between a section of flow of said first valve controlled by a first operating parameter of the first configuration set and a section of flow of said first valve controlled by a first operating parameter of the second configuration set.
  • a second operating parameter of the third configuration set controls a section of flow of the second valve so that it will be comprised between a section of flow of said second valve controlled by a second operating parameter of the first configuration set and a section of flow of said second valve controlled by a second operating parameter of the second configuration set.
  • the first configuration set and the second configuration set are such that the first valve and the second valve operated according to the first configuration set determine inside the drying chamber a pressure that is preferably equal to or does not differ by more than 20% from the pressure inside said drying chamber determined by said first and second valves operated according to the second configuration set.
  • the method described herein is able to keep the two chambers, namely the drying chamber and the forming chamber, in stable conditions so as to guarantee proper operation of the machine.
  • the third configuration set is such that the first valve and the second valve operated according to said third configuration set determine a pressure inside the drying chamber that is preferably equal to or does not differ by more than 20% from the pressure inside said drying chamber determined by said first and second valves operated according to one between the first configuration set and the second configuration set.
  • the method described herein is able to keep the two chambers, namely the drying chamber and the forming chamber, in stable conditions so as to guarantee proper operation of the machine.
  • the method described herein includes controlling said compression unit as a function of a flow-rate signal indicating a reference flow rate of air.
  • steps of the method described above may be independent of the order of execution referred to, except where there is expressly indicated as necessary a sequentiality or simultaneity between two or more steps. Moreover, some steps may be optional. Moreover, some steps may be carried out in a repetitive way, or else may be carried out in series or in parallel with other steps of the method.
  • the machine described herein operates for producing containers filled with a product and sealed, starting from a web of packaging material.
  • the product may preferably be a liquid or else a granular material.
  • the machine described herein - designated as a whole by the reference number 10 - comprises a feed system, for supplying a web 100 of packaging material and feeding the web 100 along a work path K.
  • the web 100 is supplied from a reel (not illustrated) and develops as a single continuous web along the entire work path K.
  • the machine 10 comprises a tank 20 that is set along the work path K and contains a bath 20' (represented in the figure with a dashed line) immersed in which is the web 100 that advances along the work path K.
  • the bath 20' may, for example, be constituted by a sterilizing and/or sanitizing liquid.
  • the tank 20 has a generic U shape, comprising a first branch 22A, upstream, a second branch 22B, downstream, and a bottom region 22C, which connects the two branches and housed within which is a deflector roller 12, belonging to the system for feeding the web 100 and configured to determine a reversal of the direction of advance of the web 100 (from a top-down direction to a bottom-up direction).
  • the chamber 30 and the drying chamber 40 do not communicate directly with one another, but are instead connected to one another only through interposition of the tank 20. In operation, the presence of the bath 20' prevents any passage of air between the drying chamber 40 and the chamber 30.
  • the drying chamber 40 is equipped with a series of drying devices configured for drying two opposite faces 100A, 100B of the web 100 that advances inside the drying chamber 40 along the work path K.
  • the drying chamber 40 may comprise a pair of opposed squeezing rollers 42, which operate for compressing the web 100, in a direction transverse to the work path K, so as to expel the liquid absorbed by the web 100 in the bath 20'.
  • the drying chamber 40 may comprise a pair of heads 44 for delivery of air, preferably heated air, which are arranged on the two opposite sides of the web 100, to deliver a jet of air against the opposite faces 100A, 100B of the web 100.
  • the machine 10 Downstream of the drying chamber 40, along the work path K, the machine 10 comprises a forming chamber 60, within which the web 100 is formed to obtain the containers 101 filled with product and sealed.
  • the forming chamber 60 is provided with a forming device for curling the web 100 to form a tube about an axis I that extends in a direction parallel to the work path K inside the forming chamber 60 itself. Moreover, provided within the forming chamber 60 there are sealing means for fixing together the opposite longitudinal edges of the web 100 so as to close the web 100 and obtain a vertical tube 102 sealed laterally.
  • the tube 102 is filled with the product to be packaged and extends downwards until it reaches a further chamber 80, set downstream of the forming chamber 60.
  • a further chamber 80 set downstream of the forming chamber 60.
  • transverse sealing bands that identify, on the tube 102 itself, single containers 110, which are then cut off the tube 102.
  • the means to implement the steps described above of forming, sealing, and cutting may be of a known type, and consequently they will not be described in detail herein so as not to burden the present treatment.
  • the machine 10 further comprises a drying tunnel 50 for drying the web 100, which extends along the work path K and connects together the drying chamber 40, in particular an end downstream thereof, and the forming chamber 60, in particular an end upstream thereof.
  • the machine 10 comprises a compression unit 72 for supplying pressurized air into the forming chamber 60, and an air-suction unit 74, which is connected to the chamber 30 of the tank 20 and to the drying chamber 40.
  • the machine 10 comprises a first valve 76 for controlling fluid communication between the drying chamber 40 and the air-suction unit 74, and a second valve 78 for controlling fluid communication between the chamber 30 of the tank 20 and the air-suction unit 74.
  • the machine 10 comprises a control unit 90 for controlling operation of the compression unit 72, of the air-suction unit 74, of the first valve 76, and of the second valve 78.
  • the compression unit 72 and the air-suction unit 74 may both be constituted by a compressor of a conventional type.
  • the two valves 76 and 78 may be ordinary valves for controlling a flow of gas, with variable section of flow.
  • the compression unit 72 is controlled, for example, as a function of a flow-rate signal indicating a flow rate, for generating a flow of air characterized by a reference flow rate.
  • the air-suction unit 74 is, instead, controlled on the basis of an operating parameter identified via an automatic calibration step carried out by the machine.
  • the two valves 76 and 78 are operated according to an operating mode such that inside the drying chamber 40 there is guaranteed a desired pressure, irrespective of the state of filling of the tank 20.
  • the tank 20 may be filled with the liquid constituting the bath 20', or else be completely empty, or else again be in the process of being filled.
  • the second state referred to, where the tank 20 is empty occurs, instead, during machine stoppages, which require, in fact, emptying of the tank in order to prevent the web 100 from remaining stationary immersed in the bath 20' and, in this condition, absorbing an excessive amount of water that might damage it.
  • the third state referred to, where the tank 20 is being filled, occurs, instead, during the process of filling of the tank 20 for the purpose of charging/recharging it with the liquid of the bath 20'.
  • a configuration set comprising a first operating parameter for controlling a section of flow of the first valve 76, and a second operating parameter for controlling a section of flow of the second valve 78.
  • the two operating parameters are identified so as to determine the aforesaid desired pressure inside the drying chamber 40.
  • a first configuration set S1 (X1; Y1) regarding the state of complete filling of the tank
  • a second configuration set S2 (X2; Y2) regarding the state of zero filling of the tank
  • a third configuration set S3 (X3; Y3) regarding the state of partial filling of the tank
  • X1 and Y1, X2 and Y2 X3 and Y3 are the operating parameters of the two valves 76 and 78 of the three different sets.
  • X1 and Y1 are, respectively, the first and second operating parameters of the first configuration set S1 or operating parameters with the tank full
  • X2 and Y2 are, respectively, the first and second operating parameters of the second configuration set S2, or operating parameters with the tank empty
  • X3 and Y3 are, respectively, the first and second operating parameters of the third configuration set S3, or operating parameters with partial filling.
  • the first operating parameter X2 of the second configuration set S2 controls a section of flow of the first valve 76 so that it will be smaller than the section of flow of the first valve 76 itself controlled by the first operating parameter X1 of the first configuration set S1, regarding the state of complete filling of the tank 20.
  • the second operating parameter Y2 of the second configuration set S2 controls a section of flow of the second valve 78 so that it will be larger than the section of flow of the second valve 78 itself controlled by the second operating parameter Y1 of the first configuration set S 1.
  • the drying chamber 40 in the state of zero filling of the tank the drying chamber 40 is connected to the air-suction unit 74 both directly and through the empty tank 20, which is in turn connected to the air-suction unit 74 by way of its chamber 30. Consequently, in order to prevent an undesired drop in pressure in the drying chamber 40 and at the same time setting-up of an area of negative pressure in the tank 20, the section of flow of the second valve 78 is reduced and at the same time the section of flow of the first valve 76 is increased to generate a flow of air also through the tank 20.
  • the section of flow of the second valve 78 is not, however, zero so that the product of evaporation of the bath 20' and the air that is introduced into the chamber 30 as a result of the movement of advance of the web 100 can be emptied out from the chamber 30 itself and transmitted to the air-suction unit 74.
  • the machine 10 comprises a memory unit 92, stored in which are the aforesaid configuration sets S1 (X1; Y1), S2 (X2, Y2) and S3 (X3, Y3), and the control unit 90 is configured for extracting from the memory unit 92 one of these sets as a function of the state of filling of the tank 20 and for operating the two valves 76 and 78 on the basis of the configuration set extracted.
  • the control unit 90 receives a filling signal W1 indicating the state of filling of the tank 20, which may, for example, come from the means that are associated to the tank 20 itself and are configured for filling and emptying the latter, or else from a level sensor - not illustrated - located at the tank 20.
  • the control mode described above makes it possible to guarantee stable conditions inside the two chambers, the drying one 40 and the forming one 60, during the entire period of operation of the machine, in a simple and reliable way, without the need to provide a continuous feedback control based upon a direct measurement of the pressure inside the drying chamber 40 and the forming chamber 60 themselves.
  • the configuration sets referred to may be obtained empirically through tests conducted on the machine in the three states of the tank 20 discussed above.
  • the pressure generated in the drying chamber 40 does not necessarily have, in each case, to be precisely the same, but may vary within a range of tolerance of 20%.
  • tests referred to above may be conducted during testing of the machine.
  • the more or less important adaptations that are carried out on the machine during its installation in the plant may be responsible for deviations of operation of the machine from the pre-set working conditions.
  • control unit 90 is configured for carrying out a calibration step, during which an operating parameter of the air-suction unit 74 is varied as a function of a pressure signal W3 indicating the pressure detected inside the drying chamber 40, until an effective value of said operating parameter that will determine a desired pressure inside the chamber 40 itself is identified.
  • the effective value identified is then used during operation of the machine 10; in particular, the operating parameter is set and kept at the above effective value for operating the air-suction unit 74.
  • the operating parameter in question may, for example, be a velocity of rotation of a rotor of the air-suction unit 74.
  • the pressure signal W3 is obtained from a pressure sensor 94 configured for detecting the pressure inside the drying chamber 40.
  • the aforesaid calibration step is started automatically by the machine when it is in a given operating state.
  • the control unit 90 receives a state signal W2 indicating the operating state of the machine 10, which may, for example, come from further control means thereof.
  • the calibration step is carried out during starting of the machine, for example when the machine is started for the first time after its installation or else after a prolonged machine stoppage.
  • the above calibration step enables the machine to identify automatically an optimal set-up thereof that will take into account all the specificities of the installation layout of the machine and of the working environment in which it is installed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)
EP23195676.4A 2022-09-09 2023-09-06 Maschine und verfahren zur herstellung von mit einem produkt gefüllten und versiegelten behältern Pending EP4345019A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202200018381 2022-09-09

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Publication Number Publication Date
EP4345019A1 true EP4345019A1 (de) 2024-04-03

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EP23195676.4A Pending EP4345019A1 (de) 2022-09-09 2023-09-06 Maschine und verfahren zur herstellung von mit einem produkt gefüllten und versiegelten behältern

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CN (1) CN117682178A (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929409A (en) * 1973-09-12 1975-12-30 Bosch Verpackungsmaschinen Apparatus for the sterilization of packaging material
US4396582A (en) * 1980-03-31 1983-08-02 Dai Nippon Insatsu Kabushiki Kaisha Method and apparatus for sterilizing food packages or the like
JPH05178334A (ja) * 1990-10-23 1993-07-20 Aichi Pref Gov 包装材料の殺菌方法及び装置
EP1050468A1 (de) * 1999-05-03 2000-11-08 Tetra Laval Holdings & Finance S.A. Einheit zum Sterilisieren eines Materialstreifens in einer Verpackungsmschine für das Verpacken von fliessfähigen Nahrungsmitteln, und Verpackungsmschine mit solcher Einheit
EP1334912A1 (de) * 2002-02-08 2003-08-13 Tetra Laval Holdings & Finance S.A. Vorrichtung zur Sterilisation von Packstoffbahn in einer Verpackungsmachine für fliessfähige Nahrungsmittel
US8518325B2 (en) * 2005-11-29 2013-08-27 Tetra Laval Holdings & Finance S.A. Method of sterilizing a web of packaging material
WO2015090720A1 (en) * 2013-12-20 2015-06-25 Tetra Laval Holdings & Finance S.A. A sterilizing unit comprising a heater

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929409A (en) * 1973-09-12 1975-12-30 Bosch Verpackungsmaschinen Apparatus for the sterilization of packaging material
US4396582A (en) * 1980-03-31 1983-08-02 Dai Nippon Insatsu Kabushiki Kaisha Method and apparatus for sterilizing food packages or the like
JPH05178334A (ja) * 1990-10-23 1993-07-20 Aichi Pref Gov 包装材料の殺菌方法及び装置
EP1050468A1 (de) * 1999-05-03 2000-11-08 Tetra Laval Holdings & Finance S.A. Einheit zum Sterilisieren eines Materialstreifens in einer Verpackungsmschine für das Verpacken von fliessfähigen Nahrungsmitteln, und Verpackungsmschine mit solcher Einheit
EP1334912A1 (de) * 2002-02-08 2003-08-13 Tetra Laval Holdings & Finance S.A. Vorrichtung zur Sterilisation von Packstoffbahn in einer Verpackungsmachine für fliessfähige Nahrungsmittel
US8518325B2 (en) * 2005-11-29 2013-08-27 Tetra Laval Holdings & Finance S.A. Method of sterilizing a web of packaging material
WO2015090720A1 (en) * 2013-12-20 2015-06-25 Tetra Laval Holdings & Finance S.A. A sterilizing unit comprising a heater

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