EP0912399B1 - Process and device for sterilising a web of packaging material - Google Patents

Process and device for sterilising a web of packaging material Download PDF

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Publication number
EP0912399B1
EP0912399B1 EP97930345A EP97930345A EP0912399B1 EP 0912399 B1 EP0912399 B1 EP 0912399B1 EP 97930345 A EP97930345 A EP 97930345A EP 97930345 A EP97930345 A EP 97930345A EP 0912399 B1 EP0912399 B1 EP 0912399B1
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EP
European Patent Office
Prior art keywords
packaging material
web
saturated steam
process according
material web
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.)
Revoked
Application number
EP97930345A
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German (de)
French (fr)
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EP0912399A1 (en
Inventor
Kuno Lemke
Bernd Wilke
Helmut Weber
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Robert Bosch GmbH
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Robert Bosch GmbH
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0912399A1 publication Critical patent/EP0912399A1/en
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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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Sterilisieren einer Verpackungsmaterialbahn, wie es beispielsweise aus der DE 42 09 838 A1 bekanntgeworden ist. Bei diesem Verfahren wird eine Verpackungsmaterialbahn zuerst einem mit hohem Druck auf die Verpackungsmaterialbahn auftreffenden Wasserstrahl, und anschließend einem UV-Licht ausgesetzt. Mit dem bekannten Verfahren können auf der Verpackungsmaterialbahn anhaftende Staubkörnchen oder Ansammlungen von Mikroorganismen in hohem Maße entfernt bzw. abgetötet werden. Es hat sich jedoch gezeigt, daß insbesondere Keime des Typs Aspergillus niger gegen das bekannte Sterilisierverfahren resistent sind. Dies rührt daher, daß der im wesentlichen mechanisch wirkende Wasserstrahl nicht alle Keime des obengenannten, besonders UV-Licht resistenten Typs auf der Verpackungsmaterialbahn erfaßt und loslöst, insbesondere wenn dieser in mehreren Schichten neben- oder übereinander angelagert ist. Weiterhin sind chemische Medien, wie beispielsweise Wasserstoffperoxid (H2O2) bekannt, die zwar Keime des Typs Aspergillus niger von Verpackungsmaterialbahnen entfernen, die jedoch aufgrund ihrer chemischen Zusammensetzung nur mit hohem Aufwand handzuhaben sind.The invention relates to a method for sterilizing a web of packaging material, as has become known, for example, from DE 42 09 838 A1. In this method, a packaging material web is first exposed to a water jet hitting the packaging material web at high pressure, and then exposed to UV light. With the known method, dust particles or accumulations of microorganisms adhering to the packaging material web can be removed or destroyed to a high degree. However, it has been shown that in particular germs of the Aspergillus niger type are resistant to the known sterilization process. This is due to the fact that the essentially mechanically acting water jet does not detect and detach all the germs of the above-mentioned, particularly UV light-resistant type on the packaging material web, in particular if it is deposited in several layers next to or on top of one another. Furthermore, chemical media, such as hydrogen peroxide (H 2 O 2 ), are known which remove germs of the Aspergillus niger type from packaging material webs, but because of their chemical composition they can only be handled with great effort.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Verfahren zum Sterilisieren einer Verpackungsmaterialbahn mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, daß überraschenderweise nicht nur auf der Verpackungsmaterialbahn anhaftende Staubkörnchen und Ansammlungen von Mikroorganismen, sondern insbesondere auch Keime des Typs Aspergillus niger ohne den Einsatz chemischer Sterilisiermittel entfernt bzw. abgetötet werden können.The method according to the invention for sterilizing a Packaging material web with the characteristic features of claim 1 has the advantage that, surprisingly not only adhering to the packaging material web Grains of dust and accumulations of microorganisms, but in particular also germs of the type Aspergillus niger without the Use of chemical sterilizing agents removed or killed can be.

Weitere Vorteile und vorteilhafte Weiterbildungen des erfindungsgemäßen Sterilisierverfahrens, sowie eine nach dem Verfahren arbeitende Vorrichtung ergeben sich aus den Unteransprüchen und der Beschreibung.Further advantages and advantageous developments of the sterilization method according to the invention, and one after Method working device result from the Subclaims and the description.

Eine nach dem erfindungsgemäßen Verfahren arbeitende Vorrichtung hat den Vorteil, daß durch die Verwendung des nur unter einem relativ geringen Druck stehenden Sattdampfes kein aufwendiger Druckbehälter für das Sterilisiermittel erforderlich ist. Dadurch baut die erfindungsgemäße Vorrichtung besonders einfach.A working according to the inventive method Device has the advantage that by using the only under a relatively low pressure of saturated steam no expensive pressure vessel for the sterilizing agent is required. This builds the invention Device particularly simple.

Die Verwendung von Saugrakeln anstelle von Druckluftrakeln hat den Vorteil, daß neben der Trocknung der Verpackungsmaterialbahn gleichzeitig eine Entfernung der abgewaschenen Keime erzielt wird. Ferner ist zum Betrieb von Saugrakeln keine Sterilluft erforderlich. Es ist jedoch auch denkbar, eine Kombination von Saug- und Druckluftrakeln zu verwenden. The use of squeegees instead of pneumatic squeegees has the advantage that in addition to drying the Packaging material web at the same time removing the washed germs is achieved. Furthermore, the operation of Squeegees do not require sterile air. However, it is also conceivable a combination of suction and compressed air doctor blades too use.

Durch den Einsatz und die Anordnung eines der UV-Bestrahlungseinrichtung nachgeschalteten Sterilluftdüsenpaares läßt sich die Temperatur der Verpackungsmaterialbahn derart absenken, daß selbst UV-Bestrahlungseinrichtungen mit einer relativ hohen Leistung und somit hohen Wärmeabstrahlung ohne die Gefahr einer Beschädigung der Verpackungsmaterialbahn verwendet werden können.By using and arranging one of the UV irradiation devices downstream The temperature of the sterile air nozzle pair Lower the web of packaging material so that even UV radiation equipment with a relatively high performance and thus high heat radiation without the risk of Damage to the packaging material web can be used can.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Die einzige Figur 1 zeigt einen vereinfachten Längsschnitt durch eine Vorrichtung zum Sterilisieren einer Verpackungsmaterialbahn.An embodiment of the invention is in the drawing shown and is described in more detail in the following description explained. The only Figure 1 shows a simplified Longitudinal section through a device for sterilizing a Packaging material web.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Die in einem Sterilraum 10 angeordnete Vorrichtung 11 zum Sterilisieren einer insbesondere aus Kunststoff bestehenden Verpackungsmaterialbahn 12, wie sie beispielsweise zum Formen oder Verschließen von Verpackungsbehältern verwendet wird, hat ein kontinuierlich angetriebenes Vorzugswalzenpaar 13, 14 zum Abziehen der Verpackungsmaterialbahn 12 von einer außerhalb des Sterilraums 10 befindlichen Vorratsrolle 16. In Förderrichtung der Verpackungsmaterialbahn 12 betrachtet schließen sich im Sterilraum 10 nacheinander zwei vertikal übereinander angeordnete, vorzugsweise als Breitschlitzdüsen ausgebildete Rakelpaare 17, 18 und 19, 20 für Sattdampf an, deren Dampfstrahlen die Oberseite 1 bzw. die Unterseite 2 der Verpackungsmaterialbahn 12 vollständig überstreichen. The device 11 arranged in a sterile room 10 for Sterilize an existing plastic Packaging material web 12, such as for Shaping or closing packaging containers used has a continuously driven pair of feed rollers 13, 14 for pulling the packaging material web 12 from a supply roll 16 located outside the sterile room 10. Viewed in the conveying direction of the packaging material web 12 close two vertically in the sterile room 10 one after the other arranged one above the other, preferably as wide slot nozzles trained doctor pairs 17, 18 and 19, 20 for saturated steam, whose steam jets the top 1 or the bottom 2 Cover the packaging material web 12 completely.

Zum Entfernen des auf der Verpackungsmaterialbahn 12 niedergeschlagenen Sattdampfes schließt sich auf dem weiteren Förderweg der Verpackungsmaterialbahn 12 für deren Oberseite 1 bzw. Unterseite 2 ein Paar von Druckluft- oder Saugrakeln 22, 23 an. Ferner befindet sich zum Umlenken der Verpackungsmaterialbahn 12 aus ihrer vertikalen Förderrichtung in eine horizontale Förderrichtung im Sterilraum 10 eine Umlenkrolle 24. Der Umlenkrolle 24 ist eine UV-Bestrahlungseinrichtung 25 nachgeschaltet, die aus einem Oberteil 26 und einem Unterteil 27 besteht.To remove the 12 depleted saturated steam closes on the further conveyance path of the packaging material web 12 for its Top 1 or bottom 2 a pair of compressed air or Squeegees 22, 23 on. There is also for redirecting Packing material web 12 from its vertical Direction of conveyance in a horizontal direction of conveyance in Sterile room 10 is a deflection roller 24. The deflection roller 24 a UV irradiation device 25 connected downstream from there is an upper part 26 and a lower part 27.

Im Auslaufbereich der Verpackungsmaterialbahn 12 aus der UV-Bestrahlungseinrichtung 25 befindet sich ein mit Sterilluft arbeitendes Druckluftdüsenpaar 28, 29 zum Abkühlen der Verpackungsmaterialbahn 12, dessen Blasrichtung entgegen der Förderrichtung der Verpackungsmaterialbahn 12 gerichtet ist. Ferner zielt die Blasrichtung des Druckluftdüsenpaares 28, 29 in die jeweiligen Spalte 31, 32 zwischen der Oberseite 1 der Verpackungsmaterialbahn 12 und dem Oberteil 26, bzw. der Unterseite 2 der Verpackungsmaterialbahn 12 und dem Unterteil 27.In the outlet area of the packaging material web 12 from the UV irradiation device 25 is a with sterile air working pair of compressed air nozzles 28, 29 for cooling the Packaging material web 12, the blowing direction of the opposite Direction of conveyance of the packaging material web 12 is directed. Furthermore, the blowing direction of the pair of compressed air nozzles 28 29 into the respective column 31, 32 between the top 1 the packaging material web 12 and the upper part 26, or the Bottom 2 of the packaging material web 12 and the Lower part 27.

Um die Verfahrenssicherheit der oben beschriebenen Vorrichtung 11 nachzuweisen wurde Sattdampf mit einem Druck von ca. 2 bis 5 bar (entspricht einer Temperatur von ca. 120 bis 160 Grad Celsius) eingesetzt. Die UV-Bestrahlungseinrichtung 25 wies eine Leistung von ca. 500 Milliwattsekunden/cm2 auf, und die Bestrahlungsdauer der Verpackungsmaterialbahn 12 lag im Bereich von 1 bis 10 Sekunden. Beim einmaligen Durchlauf einer mit den Keimarten Bacillus subtilis, Bacillus stearothermophilus und Aspergillus niger präparierten Verpackungsmaterialbahn 12 konnten damit Abtötungsraten größer 6 Zehnenpotenzen erzielt werden. In order to demonstrate the process reliability of the device 11 described above, saturated steam with a pressure of approximately 2 to 5 bar (corresponds to a temperature of approximately 120 to 160 degrees Celsius) was used. The UV irradiation device 25 had an output of approximately 500 milliwatt seconds / cm 2 , and the irradiation time for the packaging material web 12 was in the range from 1 to 10 seconds. When the packaging material web 12 prepared with the germ types Bacillus subtilis, Bacillus stearothermophilus and Aspergillus niger was run through once, kill rates greater than 6 orders of magnitude could be achieved.

Die oben beschriebene Vorrichtung 11 kann in vorteilhafter Weise modifiziert werden, indem der Bereich der Dampfreinigung, das heißt insbesondere der Bereich der Rakelpaare 17, 18 und 19, 20 weitgehend abgeschlossen ausgebildet ist, so daß keine Dampfschwaden in den Bereich der UV-Bestrahlungseinrichtung 25 gelangen. Es ist jedoch auch möglich, die Dampfschwaden entweder durch den Einsatz von keimarmem Wasser, oder mittels einer Absaugeinrichtung am Eintreten in die UV-Bestrahlungseinrichtung 25 zu hindern.The device 11 described above can be advantageous Modified by the range of Steam cleaning, in particular the area of Squeegee pairs 17, 18 and 19, 20 largely completed is formed so that no steam plumes in the area the UV irradiation device 25. However, it is also possible to use the steam plumes either of low-germ water, or by means of a suction device on entering the UV irradiation device 25 prevent.

Ferner wird darauf hingewiesen, daß es je nach gewünschter Sterilitätsrate der Verpackungsmaterialbahn 12 auch denkbar ist, anstelle einer zweifachen Sattdampfbehandlung der Verpackungsmaterialbahn 12 auch lediglich eine einmalige, oder aber eine mehrmalige Sattdampfbehandlung vorzusehen. Anstelle einer zweimaligen Sattdampfbehandlung kann auch eine Komination einer Sattdampf- und einer Heißwasserbehandlung treten.It is also noted that depending on the desired Sterility rate of the packaging material web 12 is also conceivable is, instead of a double saturated steam treatment Packing material web 12 also only a one-time or to provide repeated saturated steam treatment. Instead of a double saturated steam treatment can also a combination of saturated steam and one Kick hot water treatment.

Claims (9)

  1. Process for sterilizing a web of packaging material (12), in which firstly at least one sterilizing agent acts on the surface of the web of packaging material (12), and then, following the drying of the web of packaging material (12), the web of packaging material (12) is irradiated by UV light, characterized in that the sterilizing agent is saturated steam.
  2. Process according to Claim 1, characterized in that the saturated steam has a temperature between 120 degrees and 160 degrees Celsius.
  3. Process according to Claim 1 or 2, characterized in that the saturated steam strikes the entire area of the web of packaging material (12).
  4. Process according to one of Claims 1 to 3, characterized in that the drying of the web of packaging material (12) is carried out by means of compressed air and/or vacuum.
  5. Process according to one of Claims 1 to 4, characterized in that, during the UV irradiation, the web of packaging material (12) is cooled by means of sterile air.
  6. Process according to one of Claims 1 to 5, characterized in that, after the web of packaging material (12) has been treated with saturated steam, the said web is treated with hot water.
  7. Device (11) for carrying out the process according to one of Claims 1 to 6, having at least one apparatus for applying sterilizing agent to a web of packaging material (12) and a UV irradiation apparatus (25) for the web of packaging material (12), characterized in that the apparatus (17 to 20) for applying sterilizing agent is designed to use saturated steam as the sterilizing agent, and in that a cooling apparatus (28, 29) for the web of packaging material (12) is arranged in the area of the UV irradiation apparatus (25).
  8. Device according to Claim 7, characterized in that the at least one apparatus (17 to 20) for applying the saturated steam to the web of packaging material (12) has coupled to it a discharge apparatus for the saturated steam located in the area of the apparatus (17 to 20).
  9. Device according to Claim 7, characterized in that the at least one apparatus (17 to 20) for applying the saturated steam to the web of packaging material (12) is arranged in a largely closed space separated from the UV irradiation apparatus (25).
EP97930345A 1996-07-03 1997-06-19 Process and device for sterilising a web of packaging material Revoked EP0912399B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19626705A DE19626705A1 (en) 1996-07-03 1996-07-03 Method and device for sterilizing a web of packaging material
DE19626705 1996-07-03
PCT/DE1997/001257 WO1998001343A1 (en) 1996-07-03 1997-06-19 Process and device for sterilising a web of packaging material

Publications (2)

Publication Number Publication Date
EP0912399A1 EP0912399A1 (en) 1999-05-06
EP0912399B1 true EP0912399B1 (en) 2000-05-03

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ID=7798768

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Application Number Title Priority Date Filing Date
EP97930345A Revoked EP0912399B1 (en) 1996-07-03 1997-06-19 Process and device for sterilising a web of packaging material

Country Status (5)

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EP (1) EP0912399B1 (en)
JP (1) JP2000513682A (en)
DE (2) DE19626705A1 (en)
ES (1) ES2147008T3 (en)
WO (1) WO1998001343A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966657A (en) * 1997-07-24 1999-10-12 Telefonaktiebolaget L M Ericsson (Publ) Method and system for radio frequency measurement and automatic frequency planning in a cellular radio system
DE19854804A1 (en) * 1998-11-27 2000-05-31 Hassia Verpackung Ag Process and device for reducing germs and cleaning packaging material webs for the production of packaging
ITBO20020484A1 (en) * 2002-07-25 2004-01-26 Azionaria Costruzioni Acma Spa PLANT AND METHOD FOR THE CREATION OF CONTAINERS, IN PARTICULAR FOR THE CONSERVATION OF FOOD SUBSTANCES
DE102007003334A1 (en) 2007-01-17 2008-08-07 Khs Ag Method and device for the continuous sterilization of pouches
DE102007015754B3 (en) * 2007-03-30 2008-05-29 Khs Ag Plant for sterile packaging of products in packaging bag useful in food- and beverage industry, comprises a pack station, an input sluice with sterilization device, filling station, control unit, blowing-off station, and presenting unit
JP6361114B2 (en) * 2013-11-13 2018-07-25 大日本印刷株式会社 Packaging film sterilizer
DE102017121669A1 (en) 2017-09-19 2018-09-13 Hassia-Redatron Gmbh packaging machine
IT202200010361A1 (en) * 2022-05-19 2023-11-19 Ipi Srl APPARATUS FOR DRYING A SHEET OF PACKAGING MATERIAL

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1539775A (en) * 1967-07-07 1968-09-20 S E R E S Soc D Etudes Et De R Device for cleaning plastic films entering a sterile chamber
DE3029685A1 (en) * 1980-08-06 1982-03-18 Robert Bosch Gmbh, 7000 Stuttgart METHOD AND DEVICE FOR STERILIZING CONTAINERS
SE465512B (en) * 1990-11-07 1991-09-23 Tetra Pak Holdings Sa MAKE STERILIZING A PACKAGING MATERIAL BY A FLUID STERILIZER

Also Published As

Publication number Publication date
DE19626705A1 (en) 1998-01-08
DE59701596D1 (en) 2000-06-08
EP0912399A1 (en) 1999-05-06
WO1998001343A1 (en) 1998-01-15
JP2000513682A (en) 2000-10-17
ES2147008T3 (en) 2000-08-16

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