WO2009101156A2 - Procédé et dispositif de stérilisation de matériel d'emballage et/ou de matériel filtrant et/ou de récipients, utilisation de plasma correspondante et matériel ou récipient ainsi traité - Google Patents

Procédé et dispositif de stérilisation de matériel d'emballage et/ou de matériel filtrant et/ou de récipients, utilisation de plasma correspondante et matériel ou récipient ainsi traité Download PDF

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Publication number
WO2009101156A2
WO2009101156A2 PCT/EP2009/051667 EP2009051667W WO2009101156A2 WO 2009101156 A2 WO2009101156 A2 WO 2009101156A2 EP 2009051667 W EP2009051667 W EP 2009051667W WO 2009101156 A2 WO2009101156 A2 WO 2009101156A2
Authority
WO
WIPO (PCT)
Prior art keywords
plasma
packaging
containers
container
sec
Prior art date
Application number
PCT/EP2009/051667
Other languages
German (de)
English (en)
Other versions
WO2009101156A3 (fr
Inventor
Karl F. Massholder
Original Assignee
The Coca-Cola Company
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 The Coca-Cola Company filed Critical The Coca-Cola Company
Publication of WO2009101156A2 publication Critical patent/WO2009101156A2/fr
Publication of WO2009101156A3 publication Critical patent/WO2009101156A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/14—Plasma, i.e. ionised 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
    • 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

Definitions

  • the invention relates to a method and an apparatus for
  • Disinfection or sterilization of packaging material and / or containers and / or filter material in particular for foods, drinks, cosmetics, medical devices and other products with increased hygienic requirements, in particular for air filters for germ-free filling and / or packaging systems.
  • the invention relates to the use of plasma for the treatment of such materials or containers.
  • the invention relates to appropriately treated materials or appropriately treated containers.
  • the critical moment which can lead to microbiological contamination, occurs when the product comes into contact with the material of the container or packaging during filling or packaging and the material already carries undesirable bacteria, e.g. may have reached it by air or by other contacts.
  • the present invention is therefore based on the object to realize a quick and gentle sterilization of packaging material and / or containers just before the filling or packaging process and to provide effective sterilization of filter material.
  • Plasma is a partially or fully ionized gas, which has a significant proportion of free charge carriers such as ions, but especially free electrons.
  • plasma can be generated from the ambient air or other suitable pure gases or gas mixtures.
  • Treated materials are sterilized in a few seconds, i. disinfected.
  • the temperature rises only by a few degrees C, which does not affect the treated materials.
  • Packaging materials only a small amount of energy required.
  • ROS reactive oxidizing species
  • the plasma causes an electron exchange on the surface of the treated materials, which leads to a hydrophilization of the surface and thus reduces the "clumping" of microorganisms.
  • the inventive method is not only suitable for disinfection or sterilization of packaging material, but can also be used successfully for the treatment of filter material to eliminate microbial contamination.
  • the method according to the invention can be used in particular in connection with filling and / or packaging systems for the periodic treatment of HEPA filters used there.
  • all other conceivable filter materials are treatable.
  • the product and / or the product surface with a plasma in particular with a non-thermal atmospheric plasma, brought into contact.
  • An atmospheric plasma is recovered at ambient pressure from the surrounding air.
  • the electrons have a higher temperature than the heavy particles.
  • the temperature of the gas can be located in the region of the ambient temperature, while individual electrons have very high energy contents.
  • the plasma used may also be in complete or local thermal equilibrium.
  • the product can not be brought into direct contact with the plasma, but much more with the gas generated in the plasma.
  • the generated gas ozone (O 3 ) and / or OH radicals and / or other oxidants Reactive Oxidizing Species, ROS. Due to the presence of such strongly reactive constituents, on the one hand microorganisms are destroyed and on the other hand the surface of the material to be treated is conditioned in an advantageous manner as described above.
  • Plasma reactor supplies additional oxygen. Since the nitrogen of the air (with approx. 78%) does not participate in the plasma reaction, this can significantly increase the concentration of ROS.
  • the gas generation is optimized in terms of a high content of OH radicals.
  • OH radicals In the context of the present invention it has been found that an increased content of such hydroxyl radicals in the gas stream surprisingly leads to a greatly improved sterilization.
  • the OH radicals therefore have particularly effective antimicrobial properties.
  • the plasma reactor water in particular in the form of humidity and / or water vapor, is supplied.
  • an increased yield of OH radicals can be achieved, namely on the one hand from the water itself according to the reaction H 2 O -> OH + H, and on the other hand with further reaction of the molecular hydrogen with the ozone formed during plasma generation, namely according to the reaction H + O 3 -> OH + O 2 .
  • a further preferred embodiment of the method is characterized in that in a first step in the plasma reactor generated ozone is converted by subsequent application of UV radiation and subsequent contact with water in OH radicals.
  • ozone can be converted into electronically excited atomic oxygen by means of exposure to UV radiation is, namely according to O 3 -> O 2 + O ( 1 D).
  • This electronically excited atomic oxygen 0 ( 1 D) can be converted by the further reaction with existing water into OH radicals, namely according to Of 1 D) + H 2 O -> 2 OH.
  • the UV radiation used has a wavelength of about 240 nm up to about 300 nm, in particular about 270 nm. Surprisingly, a particularly high yield of OH radicals could be obtained in the stated wavelength range.
  • the plasma preferably a non-thermal atmospheric plasma
  • a dielectrically impeded discharge barrier discharge
  • a plasma can be generated which is far removed from the thermal equilibrium. This makes it possible to provide particularly high-energy electrons.
  • the plasma can also be generated by other types, for example by laser radiation, by DC voltage (sparkover), by microwave radiation, magnetic excitation or the like.
  • barriers are used, which are coated with photoactive titanium dioxide, wherein the barriers optionally have ceramic material. Ceramic materials initially provide particularly effective dielectrics.
  • the barrier can now be coated with photoactive titanium dioxide. This titanium dioxide is characterized by an energy absorption during the discharge, wherein the absorbed energy is then released again, inter alia, as ultraviolet radiation. Accordingly, the UV radiation thus emitted can make a valuable contribution to the formation of electronically excited atomic oxygen O ( 1 D) as described above.
  • the plasma is generated pulsed, with a clock of about 0.1 sec to about 3 sec, in particular about 2 sec, is used. With these parameters, good results have been achieved.
  • the treatment of the materials is advantageously carried out so that the material and / or the material surface or the container and / or the container inner surface and / or the container surface with the plasma, in particular a non-thermal atmospheric plasma, in contact is brought.
  • the plasma in particular a non-thermal atmospheric plasma
  • the generated reactive gas can be supplied to the materials to be treated.
  • the materials can occupy a certain distance from the plasma or the discharge zone.
  • the treatment of the product is carried out in a reactor and / or in or behind a discharge zone.
  • a discharge zone is located in a suitably encapsulated reactor.
  • the product to be treated is then contacted with the reactive gas generated in the plasma.
  • a bypass for the product flow through the reactor is to be provided for continuous operation.
  • a treatment time of about 20 sec to about 120 sec, in particular about 60 sec to about 120 sec, and in particular about 90 sec has been found.
  • the mentioned treatment times represent an optimal compromise between treatment success (germ killing) and economy.
  • the material to be treated can optionally during the treatment be constantly kept in motion (in-line treatment).
  • materials or containers for packaging and / or storage of food, beverages and other hygienically sensitive substances with the method according to the invention can be sterilized easily, gently and quickly.
  • any filter materials but in particular HEPA filter (High Efficiency Particulate Air Filter) treat, which are used for air purification for germ-free filling and / or packaging equipment.
  • HEPA filter High Efficiency Particulate Air Filter
  • Packaging material and / or containers and / or filter material finally has an input and / or rejection device for the material and / or container to be treated. This is one continuous and rapid treatment of the materials allows.
  • Methylene blue is a phenothiazine derivative and a known redox indicator.
  • An oxidizing effect of the generated gas leads to a discoloration of the initially deep blue solution.
  • Duration of treatment 60 sec, 90 sec and 120 sec
  • test dishes were under variation of the above
  • Oxygen with the addition of water has almost completely decolorized at a distance of 17 cm.
  • Screw cap for plastic beverage bottles polystyrene
  • various germs and spores and then subjected to a plasma treatment.
  • the seeds could be reduced by 5 log steps (i.e., 99.999%) within 60 seconds.
  • the inactivation rate achieved by the method according to the invention has been determined on the basis of two different microorganisms. On the one hand with Aspergillus Niger (black mold) and on the other hand with Bacillus atrophaeus (formerly Bacillus subtilis, hay bacillus, a far common gram-positive, rod-shaped and flagellated bacterium which is an aerobic-growing endosporogene) contaminated samples have been provided and treated.
  • the achieved reduction in the number of bacteria (CFU colony-forming units) can be deduced together with the respective treatment time from the following table:

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne un procédé et un dispositif de désinfection ou de stérilisation de matériel d'emballage et/ou de récipients et/ou de matériel filtrant, le matériel ou le récipient étant traité avec un gaz produit dans un réacteur à plasma. Le traitement au plasma permet d'obtenir une stérilisation sensiblement améliorée du matériel correspondant, en particulier du matériel d'emballage et/ou des récipients destinés à l'emballage et/ou à la conservation de produits alimentaires, boissons et autres produits sensibles du point de vue hygiénique. L'invention concerne enfin l'utilisation de plasma pour le traitement d'un tel matériel ou de tels récipients ainsi que le matériel ou les récipients ainsi traités.
PCT/EP2009/051667 2008-02-13 2009-02-12 Procédé et dispositif de stérilisation de matériel d'emballage et/ou de matériel filtrant et/ou de récipients, utilisation de plasma correspondante et matériel ou récipient ainsi traité WO2009101156A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102008009052 2008-02-13
DE102008009052.2 2008-02-13
DE102008037898.4 2008-08-15
DE102008037898.4A DE102008037898B4 (de) 2008-02-13 2008-08-15 Verfahren und Vorrichtung zur Sterilisation von Verpackungsmaterial und/oder Behältern, diesbezügliche Verwendung von Plasma sowie entsprechend behandeltes Material oder Behälter

Publications (2)

Publication Number Publication Date
WO2009101156A2 true WO2009101156A2 (fr) 2009-08-20
WO2009101156A3 WO2009101156A3 (fr) 2009-10-29

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DE (1) DE102008037898B4 (fr)
WO (1) WO2009101156A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016012883A1 (fr) 2014-07-21 2016-01-28 Gea Procomac S.P.A. Dispositif de moulage permettant le moulage d'un récipient à partir d'une paraison en matière plastique et machine de moulage comprenant ce dispositif
WO2016012884A1 (fr) 2014-07-21 2016-01-28 Gea Procomac S.P.A. Dispositif de moulage pour mouler un récipient à partir d'une paraison en matière plastique, procédé de moulage et machine à mouler
WO2016012885A1 (fr) 2014-07-21 2016-01-28 Gea Procomac S.P.A. Procede pour le moulage et la sterilisation d'un recipient en matiere plastique, dispositif pour le moulage et la sterilisation d'un recipient en matiere plastique et machine de moulage et de sterilisation

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DE102014107805A1 (de) * 2013-07-17 2015-01-22 Vorwerk & Co. Interholding Gmbh Anordnung zur Filterung von Luft sowie Verfahren zur Luftreinigung
DE102017123871A1 (de) * 2017-10-10 2019-04-11 Plasmatreat Gmbh Verfahren zur Oberflächendesinfektion und zur Desinfektion von Komponenten einer Abfüllanlage
DE102018115300A1 (de) 2018-06-26 2020-01-02 Relyon Plasma Gmbh Anordnung und Verfahren zur Dekontamination von Objekten
DE102018120269A1 (de) * 2018-08-21 2020-02-27 Relyon Plasma Gmbh Anordnung und Verfahren zur Behandlung von Objekten
DE102019106767A1 (de) 2019-03-18 2020-09-24 Relyon Plasma Gmbh Anordnung zur Dekontamination einer Oberfläche von Objekten und Verfahren zur Dekontamination einer Oberfläche von Objekten
DE102020112041B4 (de) 2020-05-05 2023-03-16 Relyon Plasma Gmbh Vorrichtung und Verfahren zur spezifischen Keim- und/oder Geruchsreduzierung von Objekten

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016012883A1 (fr) 2014-07-21 2016-01-28 Gea Procomac S.P.A. Dispositif de moulage permettant le moulage d'un récipient à partir d'une paraison en matière plastique et machine de moulage comprenant ce dispositif
WO2016012884A1 (fr) 2014-07-21 2016-01-28 Gea Procomac S.P.A. Dispositif de moulage pour mouler un récipient à partir d'une paraison en matière plastique, procédé de moulage et machine à mouler
WO2016012885A1 (fr) 2014-07-21 2016-01-28 Gea Procomac S.P.A. Procede pour le moulage et la sterilisation d'un recipient en matiere plastique, dispositif pour le moulage et la sterilisation d'un recipient en matiere plastique et machine de moulage et de sterilisation

Also Published As

Publication number Publication date
DE102008037898B4 (de) 2022-06-02
WO2009101156A3 (fr) 2009-10-29
DE102008037898A1 (de) 2009-08-20

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