EP0045201A1 - A method of rendering material aseptic - Google Patents

A method of rendering material aseptic Download PDF

Info

Publication number
EP0045201A1
EP0045201A1 EP81303417A EP81303417A EP0045201A1 EP 0045201 A1 EP0045201 A1 EP 0045201A1 EP 81303417 A EP81303417 A EP 81303417A EP 81303417 A EP81303417 A EP 81303417A EP 0045201 A1 EP0045201 A1 EP 0045201A1
Authority
EP
European Patent Office
Prior art keywords
substance
radiation
aseptic
layer
water
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.)
Withdrawn
Application number
EP81303417A
Other languages
German (de)
English (en)
French (fr)
Inventor
Catherine Jane Stannard
John Mathew Wood
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.)
LIQUIPAK INTERNATIONAL B.V.
Original Assignee
Liquipak International BV
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 Liquipak International BV filed Critical Liquipak International BV
Publication of EP0045201A1 publication Critical patent/EP0045201A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • 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

Definitions

  • This invention relates to a method of rendering material aseptic.
  • United States Patent 3,566,575 discloses an aseptic packaging machine for forming, aseptically treating, filling and sealing containers while protecting them with a clear air atmosphere after they have been aseptically treated by a bactericide.
  • the aseptic treatment is accomplished by a fogging system to provide for total contact by the bactericide with the internal sufaces of the container and includes a drying station for removal of the residual bactericide after the treatment.
  • the suggested bactericide is 35% hydrogen peroxide solution (H 2 0 2 ).
  • H 2 0 2 35% hydrogen peroxide solution
  • the H 2 0 2 is removed by drying, which is done by jetting hot air down through the open top of the container. Complete removal is desirable since it has been alleged that, even in small residual quantities, H 2 0 2 has a toxic effect on human beings.
  • the relatively large amount of H 2 0 2 required is very difficult to dry away completely, especially since the drying is least effective at the bottom of the container, so that again a relatively long time is required. The total time delays involved therefore seriously jeopardize the commercial of the machine.
  • the radiation source is directed with Its window inside the carton to cover all internal surfaces.
  • the carton is designed so as to avoid any shadows on its inside.
  • the radiation source is a gas discharge lamp with a power unit and emits ultraviolet rays cf 200-280 nm (esp. 254 nm) when a lifter has raised a carton around the quartz tube of the lamp.
  • Addition UV lamps can be arranged in the chamber. If an electron beam is used instead of the UV lamps, lead screens are required to protect the personnel against X-rays, produced as a secondary effect.
  • a preferred material for the cartons is polystyrene foam, strengthened by a surface coating of a homogeneous plastic.
  • a method of rendering material aseptic in which the material is contacted with a substance, and the material and the substance are irradiated with ultraviolet radiation, the substance and the radiation having a synergistic sterilizing effect, characterized in that said substance is not toxic in residual quantities,
  • Such substance can be water, for example.
  • a method of rendering material aseptic in which the material is provided with a layer of a substance and the material and the substance are irradiated with ultravioler. radiation the substance and the radiation having a synergistie.sterilizing effect, characyterized in that said layer is relatively thin and the irradiation is relatively intensive.
  • the substance can be hydrogen peroxide solution or water, for example.
  • the layer consists of droplets of H 2 0 2 or water.
  • the layer is less than 0.1 mm thick, for example about 2u thick. we believe that such a relatively thin layer has the advantage that the droplets do not shelter to a substantial extent from the ultraviolet radiation the organisms to be killed.
  • the dosage of the irradiation is advantageously at least 5 mW sec./cm 2 over every part of the material desired to be rendered aseptic, so giving a relatively high dosage.
  • a method of rendering material aseptic in which the material is irradiated with ultraviolet radiation, characterized in that substantially no radiation the wavelength of which has been substantially changed by the material is reflected by the material.
  • Ultraviolet radiation was provided by a hign intensity W-C germicidal lamp (UVC-13-70) produced by Brown, Boveri & Cie of Baden.
  • the lamp was so situated relative to the carton that the lowest dosage of any part of the interior surface of the carton was 5 mW-sec./cm 2 with a 10 second exposure of the interior surface.
  • H z 0 2 solution was used into the cartons at ambient temperature.
  • 0.1 ml of H 2 O 2 in 1% w/v solution was sprayed for 0.6 sec., to give an H 2 0 2 layer thickness of about 2 ⁇ .
  • Water was also sprayed into the cartons in a similar manner.
  • the present invention is particularly usable in the machine of our Patent Application No. 7 9302970.3
  • H 2 0 2 The desired lethal effect'on bacteria of the combined use of H 2 0 2 and UV has been found to be consistently achieved even at very low H 2 0 2 concentrations e.g. down to 0.05% H 2 0 2 solution.
  • residual H 2 0 2 can in any case be made very low, without any serious detriment to the bactericidal effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
EP81303417A 1980-07-29 1981-07-24 A method of rendering material aseptic Withdrawn EP0045201A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8024780 1980-07-29
GB8024780 1980-07-29

Publications (1)

Publication Number Publication Date
EP0045201A1 true EP0045201A1 (en) 1982-02-03

Family

ID=10515115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81303417A Withdrawn EP0045201A1 (en) 1980-07-29 1981-07-24 A method of rendering material aseptic

Country Status (4)

Country Link
EP (1) EP0045201A1 (enrdf_load_stackoverflow)
JP (1) JPS57110252A (enrdf_load_stackoverflow)
AU (1) AU7352581A (enrdf_load_stackoverflow)
DK (1) DK338481A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001091809A3 (en) * 2000-05-29 2002-04-04 Fine Hygienic Paper Fze Sterilization process for hygienic products
WO2003015834A1 (fr) * 2001-08-20 2003-02-27 Menicon Co., Ltd. Procede de desinfection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07112489B2 (ja) * 1989-06-26 1995-12-06 エフ エム シー コーポレーション 過酸化水素、過酸及びｕ．ｖ．照射による容器の殺菌法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566575A (en) * 1968-02-26 1971-03-02 Ex Cell O Corp Aseptic packaging machine
CH578457A5 (enrdf_load_stackoverflow) * 1974-11-08 1976-08-13 Bbc Brown Boveri & Cie
CH595248A5 (en) * 1974-12-10 1978-02-15 Anders Ruben Rausing Sterilised cartons for long-life liquids
US4175140A (en) * 1974-04-10 1979-11-20 Aluminiumwerke Ag. Rorschach Method for automatic low-bacteria to aseptic filling and packing of foodstuffs employing ultraviolet radiation
WO1980001457A1 (en) * 1979-01-11 1980-07-24 J Peel Method of sterilisation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735550A1 (de) * 1977-08-06 1979-02-08 Guenther O Prof Dr Schenck Mehrkammer-photoreaktor
JPS5491437A (en) * 1977-12-22 1979-07-19 Matsushita Electric Ind Co Ltd Pasteurizing method for culture solution in solution cultivation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566575A (en) * 1968-02-26 1971-03-02 Ex Cell O Corp Aseptic packaging machine
US4175140A (en) * 1974-04-10 1979-11-20 Aluminiumwerke Ag. Rorschach Method for automatic low-bacteria to aseptic filling and packing of foodstuffs employing ultraviolet radiation
CH578457A5 (enrdf_load_stackoverflow) * 1974-11-08 1976-08-13 Bbc Brown Boveri & Cie
CH595248A5 (en) * 1974-12-10 1978-02-15 Anders Ruben Rausing Sterilised cartons for long-life liquids
WO1980001457A1 (en) * 1979-01-11 1980-07-24 J Peel Method of sterilisation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
THE JOURNAL OF APPLIED BACTERIOLOGY, vol. 47, no. 2, October 1979, London, New York, San Francisco C.E. BAYLISS AND W.M. WAITES " The Combined Effect of Hydrogen Peroxide and Ultraviolet Irradiation on Bacterial Spores " pages 263-269 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001091809A3 (en) * 2000-05-29 2002-04-04 Fine Hygienic Paper Fze Sterilization process for hygienic products
WO2003015834A1 (fr) * 2001-08-20 2003-02-27 Menicon Co., Ltd. Procede de desinfection

Also Published As

Publication number Publication date
JPS644468B2 (enrdf_load_stackoverflow) 1989-01-25
JPS57110252A (en) 1982-07-09
AU7352581A (en) 1982-06-10
DK338481A (da) 1982-01-30

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19820723

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LIQUIPAK INTERNATIONAL B.V.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840406

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STANNARD, CATHERINE JANE

Inventor name: WOOD, JOHN MATHEW