US3904361A - Procedure and a device for the sterilization of packaging material - Google Patents

Procedure and a device for the sterilization of packaging material Download PDF

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Publication number
US3904361A
US3904361A US252259A US25225972A US3904361A US 3904361 A US3904361 A US 3904361A US 252259 A US252259 A US 252259A US 25225972 A US25225972 A US 25225972A US 3904361 A US3904361 A US 3904361A
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United States
Prior art keywords
web
chamber
film
sterilization
liquid
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Expired - Lifetime
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US252259A
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English (en)
Inventor
Hermann Egger
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RIC RESEARCH INVESTMENT Corp
International Paper Co
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Individual
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Publication of US3904361A publication Critical patent/US3904361A/en
Assigned to INTERNATIONAL PAPER COMPANY reassignment INTERNATIONAL PAPER COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RIC RESEARCH INVESTMENT CORPORATION
Assigned to RIC RESEARCH INVESTMENT CORPORATION reassignment RIC RESEARCH INVESTMENT CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: QUEPOR S.A.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • A61L2/04—Heat
    • A61L2/06—Hot gas
    • A61L2/07—Steam
    • 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

Definitions

  • the invention refers to a procedure and a device for the sterilization of packaging material, both the procedure and the device being especially applicable to the sterile packaging and filling of precedently sterilized products, especially liquid products, into containers formed from plastic or plastic coated paper webs.
  • Sterilization reaches an insufficient maximum of 2 log. cycles when H 0 is sprayed and suddenly evaporated by hot air circulation. Sterilization has however proved optimal, with 5 log. cycles, with a liquid film of H 0 of concentration when its temperature is raised just below its boiling point by radiation and its evaporation is kept at a minimum for approximately seconds.
  • the hydrogen peroxide solution is applied as a cold film of uniform thickness to the interior, plastic coated surface of the web.
  • the web passes through a sterilization chamber filled with practically stationary, sterile, steam saturated atmosphere and the peroxide film on it is subjected, immediately upon its entrance into the chamber, to a sudden heating to a temperature just below its boiling point. Throughout the remaining portion of its travel through this chamber the film is kept at this temperature, while the saturated atmosphere of the chamber keeps its evaporation at a minimum.
  • the interior web face has attained the above indicated high degree of sterilization.
  • the web passes into a second chamber, wherein the interior web face is dried by a steam of precedently sterilized hot dry air, and thence moves into the successive processing stations of the packaging machine, in which it is transformed into containers and the containers are filled and sealed.
  • FIGS. 1A, 1B and 1C are a vertical section through the first embodiment
  • FIG, 2 is a schematic drawing, on a larger scale, of the web wetting station of FIG. 1A;
  • FIG. 3 is a section, taken along the line IIIIII, of FIG. 18;
  • FIGS. 4A-B are a vertical section through the second embodiment
  • FIG. 5 is a section taken along line V- ⁇ / of FIG. 4B.
  • FIG. 6 is a schematic drawing of an elevational view perpendicular to the view of FIGS. lA-C.
  • the web 1 is drawn by the usual (and therefore not shown) drive rolls from an(also not shown) feed roll, thence, with its coated face la downward, under a directing roll 4 and vertically upward through the sterilization and the drying chamber.
  • a wetting cylinder 3 is partially immersed in a 15 hydrogen peroxide solution contained in tank 5 and kept there at a constant level by any suitable known and therefore not shown system.
  • the rotation imparted by the web 1 to the directing roll 4 is transmitted through any suitable means, such as a gear or belt drive, to cylinder 3, which, in its rotation, transfers a hydrogen peroxide film Sa from the tank 5 and to the plastic coated surface 1a of web 1.
  • Cylinder 6 presents at each end a raised rim 7 which presses resiliently against the margins of the web 1 on cylinder 4, whereby also roll 6 is entrained in rotation by the web.
  • Rims 7 form a clearance between the surface of cylinder 6 and the web face la, which serves to equalize the liquid film on face and determine its thickness at the entrance of the web into the sterilization chamber.
  • a wiper blade 8 serves to recover any liquid from the surface of cylinder 6.
  • the sterilization chamber may be of any shape permitting the arrangement of the heaters and the creation of a steam saturated atmosphere according to the following description.
  • the paper web since in packaging practice, at a certain step, the paper web must anyhow be folded in the middle and its two margins must be sealed together in a successive stage to form the web into a tube, it is convenient to take advantage of this provision to let the web itself form two walls of the sterilization and the subsequent drying chamber.
  • the doubled-up web 1 is passed over a (not shown guide roll 30 or between a pair of guide rolls mounted just over line ZZ of FIG. 1 or 4 as seen in FIGS. 1C and 6, whose axis or axes respectively are at a right angle with those of the cylinders in the wetting station 2.
  • the heating of the peroxide film is effected by infrared radiators, such as infrared lamps, the emitted wavelengths being comveniently selected in the range from 2.5 to 3 microns so that they correspond to their maximum absorption by the liquid film on the web. In this manner it is possible to selectively heat to a desired temperature said liquid film while preventing the excessive heating of the supporting web material.
  • infrared radiators such as infrared lamps
  • the radiators l4 and 15 are aligned in a vertical row on plate 11 and separated by horizontal baffles 16 which extend from plate 11 as near to the web surface la as it is possible without the danger of damaging it, and thereby they separate the sterilization chamber into compartments, with the purpose of keeping the atmosphere in the chamber as stationary as possible.
  • the baffles are made from materials which absorb as little as possible of the radiations of the heaters 14 and 15.
  • Each radiator or heater is of a shape approximately following the contours assumed by the web at their level (see especially FIG. 3), and its rays are directed by semicircular reflectors 17 of a parabolic cross section in conical beams upon the web survace 1a.
  • This arrangement permits the heating of this surface uniformly both in a transverse and in a longitudinal sense, because the radiators are spaced from each other so that the edges of their conical beams of radiation overlap.
  • radiators 14 Upon its entrance into the sterilization chamber, the peroxide film is heated by the lowermost radiators 14 very quickly to a temperature just below its boiling point.
  • radiators 14 are placed either nearer to web 1 or made of a greater power than radiators 15.
  • the task of the successive radiators 15 is to maintain the liquid film at the temperature imparted to them by the radiators 14 for the remaining portion of its travel through the sterilization chamber.
  • the atmosphere of the chamber is saturated with steam and hydrogen peroxide vapors of a temperature equal to that of said heated film.
  • the hydrogen peroxide vapors are obtained by spraying H 0 nozzles 31 into the chamber, while steam is injected into it through a distributor 32 at a pressure slightly above the external preesure.
  • the sterilization chamber with its highly saturated atmosphere and the arrangement of the heaters permit therefore a prolonged contact of a very hot film of sterilizing liquid with the interior web surface, to attain its best possible sterilization.
  • the terminals 18 of the radiators l4 and 15 are located within a box 19, which also contains the conductors for the connection with the electric mains.
  • the drying chamber 22 forms a continuation of the sterilization chamber since its walls are also formed by the web 1 and the plate 11.
  • This chamber is separated from the sterilization chamber by a diaphragm 20 which extends from plate 11 towards web 1. Slightly above said diaphragm, plate 11 presents an opening 11a and slightly below its upper end a second opening i 1112.
  • An upward curved deflector plate 2l extends from the lower edge of opening .1 la.,towards the web and similarly a downward curved deflector.
  • plate 23 extends from the upper edge of opening 11b towards said web.
  • a stream of hot dry pre-sterilized air entering t-hrough opening 1 la, passing along web face la and issuing through opening 11b, or in the contrary direction, as it seems fit.
  • the temperature of the air stream can be kept as low, for instance as 100C so, as not to endanger the plastic coating of the web.
  • an exposure time of 5 seconds is amply sufficient to totally remove an H O layer of a at a temperature of 90C of the packaging material by means of a hot air stream of lOOC at a speed of over 2 meters/second.
  • electric resistors instead of infrared lamps, are used as infrared radiation sources, and the differences in structure in the sterilization chambers between the first and this embodiment are due to the greater thermal inertia of these radiation sources, so that means must be provided to immediately remove them from the vicinity of the web in the case of a break-down of the web transport mechanism or during the starting-up time of the packaging machine, during which web 1 is still stationary.
  • the high-temperature electrical resistors l4 and are not mounted directly upon plate 11, as in the former embodiment, but on a box-like structure 25, and they project into the sterilization chamber through a generally triangular opening extending from the lower to the upper end of plate 11.
  • the radiators 14 also the lowermost radiators 14 of this embodiment are either more powerful or kept nearer the liquid film on web surface la than the successive radiators 15 for the purpose already illustrated in connection with the first embodiment Structure 25 is connected by piston rods 26 to double acting hydraulic cylinders 28 which it is automatically retracted whenever the web stops for any of the aforementioned causes.
  • a casing 29 is welded or otherwise fastened to plate 11 and forms, together with web I, a completely enclosed space 27.
  • a process for the sterilization of the surface of a web of packaging material which is to become the internal surface of the container formed from the web comprising the steps of:
  • a device for the sterilization of the surface of a web of packaging material which is to become the internal surface of the container formed from the web comprising:
  • an essentially closedsterilization chamber said chamber having an inlet and an outlet end for the passage of said liquid filmed surface in thereto and out thereof;
  • heating means arrayed in said chamber from its inlet towards its outlet, those at its inlet being for heating said liquid film quickly to a temperature just below its boiling point, the successive ones being for keeping said liquid film at said temperature;
  • baffles within said chamber interposed between said heating means to minimize motion of said atmosphere within said sterilization chamber.
  • a device wherein the means to apply a film of sterilizing liquid to the interior face of said web comprises:
  • a directing roll to direct said web towards said sterilization chamber and rotated by the movement of said web
  • a wetting cylinder driven by said directing roll to apply a film of said sterilizing liquid to the interior web face
  • an equalizing cylinder to evenly distribute and determine the final thickness of said liquid film.
  • a device additionally comprising a drying chamber forming a continuation of said sterilization chamber, the inlet of said drying chamber coinciding with the outlet of said sterilization chamber; and means in said drying chamber to apply a current of hot sterilized gas to said liquid film.
  • heating means comprises a plurality of infrared radiators, their emission being of a wavelength such as to be selectively absorbed by said liquid film.
  • a device according to claim 11 wherein said heating means present a curvature pararlleling the contours assumed by said web at their level.
  • said heating means compries a succession of heaters and wherein said sterilization chamber is subdivided into compartments by baffles interposed between successive heaters and extending from said plate to the immdediate vicinity of the interior web surface.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
US252259A 1971-05-19 1972-05-11 Procedure and a device for the sterilization of packaging material Expired - Lifetime US3904361A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT50425/71A IT989590B (it) 1971-05-19 1971-05-19 Procedimento ed impianto per ste rilizzare materiale di imballag gio

Publications (1)

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US3904361A true US3904361A (en) 1975-09-09

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US252259A Expired - Lifetime US3904361A (en) 1971-05-19 1972-05-11 Procedure and a device for the sterilization of packaging material

Country Status (10)

Country Link
US (1) US3904361A (de)
AT (1) AT320162B (de)
BE (1) BE783730A (de)
CH (1) CH540156A (de)
DE (1) DE2223911A1 (de)
ES (1) ES402901A1 (de)
FR (1) FR2138032B1 (de)
GB (1) GB1387457A (de)
IT (1) IT989590B (de)
NL (1) NL7206538A (de)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169123A (en) * 1975-12-11 1979-09-25 Moore-Perk Corporation Hydrogen peroxide vapor sterilization method
US4169124A (en) * 1977-09-26 1979-09-25 Moore-Perk Corporation Cold gas sterilization process
US4225556A (en) * 1976-10-07 1980-09-30 Tetra Pak International Ab Method and apparatus for the sterilizing of a packing material web
US4230663A (en) * 1979-07-10 1980-10-28 Moore-Perk Corporation Cold gas sterilization process using hydrogen peroxide at low concentrations
US4366125A (en) * 1979-11-27 1982-12-28 Dai Nippon Insatsu Kabushiki Kaisha Sterilization apparatus and process utilizing synergistic effect of combining hydrogen peroxide and ultra-violet-ray sterilization
US4368081A (en) * 1980-09-05 1983-01-11 Jujo Paper Co., Ltd. Method for removing residual hydrogen peroxide on a sterilized food package
US4424188A (en) 1981-12-31 1984-01-03 International Paper Company Sterilization of packaging material
US4512951A (en) * 1980-12-30 1985-04-23 American Sterilizer Company Hydrogen peroxide liquid film sterilization method
US4744951A (en) * 1983-11-07 1988-05-17 American Sterilizer Company Vaporization method to enhance sterilant penetration
US4924891A (en) * 1986-06-26 1990-05-15 Baxter International Inc. Apparatus for cleaning and/or decontaminating a continuous strip of thermoplastsic film
US4952370A (en) * 1988-05-06 1990-08-28 American Sterilizer Company Hydrogen peroxide sterilization method
US5348556A (en) * 1988-06-14 1994-09-20 Basf Corporation Volatile carpet sanitizing shampoo containing hydrogen peroxide
WO1995014494A1 (en) * 1993-11-26 1995-06-01 Electrical Control Systems Pty. Ltd. Autoclaving method and apparatus
US5424034A (en) * 1991-07-17 1995-06-13 Tetra Laval Holdings & Finance Sa Method and an apparatus for sterilizing a continuous packaging material web
US6324815B2 (en) * 1999-08-20 2001-12-04 International Paper Company Apparatus and method for sterilizing an aseptic web
US20050077482A1 (en) * 2002-03-12 2005-04-14 Tetra Laval Holdngs & Finance S.A. Device for treating a packaging material by means of uv radiation
US20120036814A1 (en) * 2009-04-01 2012-02-16 Tetra Laval Holdings & Finance S.A. Safety chamber
US20120073250A1 (en) * 2009-02-13 2012-03-29 Nicholas Cudworth Waste storage device
US20140196407A1 (en) * 2011-10-03 2014-07-17 Tetra Laval Holdings & Finance S.A. Packaging machine and method for producing sealed packages of a food product from a web of a packaging material
USD795606S1 (en) 2015-12-21 2017-08-29 Sangenic International Limited Cassette for a waste storage device
USD799136S1 (en) 2015-12-21 2017-10-03 Sangenic International Limited Waste storage device
CN107469402A (zh) * 2017-09-22 2017-12-15 郑州中技联创环境技术有限公司 一种植物药用成分提取装置及使用方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH587153A5 (de) * 1974-11-19 1977-04-29 Alpura Koreco Ag
FR2392879A2 (fr) * 1976-10-06 1978-12-29 Nasica Jean Bande composite, son procede de fabrication et son application a la fabrication d'emballages steriles
SE401912B (sv) * 1976-10-07 1978-06-05 Tetra Pak Int Sett att sterilisera foremal medelst vetskeformigt steriliseringsmedel samt anordning for genomforande av settet
IN153503B (de) 1979-01-11 1984-07-21 Nat Res Dev
DE3640622A1 (de) * 1986-11-27 1988-06-09 Pkl Verpackungssysteme Gmbh Verfahren zum sterilisieren von verpackungsmaterial

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440003A (en) * 1965-10-18 1969-04-22 Tetra Pak Ab Method of and apparatus for sterilizing a web material
US3557525A (en) * 1968-01-18 1971-01-26 Hesser Ag Maschf Apparatus for making and filling bags

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440003A (en) * 1965-10-18 1969-04-22 Tetra Pak Ab Method of and apparatus for sterilizing a web material
US3557525A (en) * 1968-01-18 1971-01-26 Hesser Ag Maschf Apparatus for making and filling bags

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169123A (en) * 1975-12-11 1979-09-25 Moore-Perk Corporation Hydrogen peroxide vapor sterilization method
US4225556A (en) * 1976-10-07 1980-09-30 Tetra Pak International Ab Method and apparatus for the sterilizing of a packing material web
US4169124A (en) * 1977-09-26 1979-09-25 Moore-Perk Corporation Cold gas sterilization process
US4230663A (en) * 1979-07-10 1980-10-28 Moore-Perk Corporation Cold gas sterilization process using hydrogen peroxide at low concentrations
US4366125A (en) * 1979-11-27 1982-12-28 Dai Nippon Insatsu Kabushiki Kaisha Sterilization apparatus and process utilizing synergistic effect of combining hydrogen peroxide and ultra-violet-ray sterilization
US4368081A (en) * 1980-09-05 1983-01-11 Jujo Paper Co., Ltd. Method for removing residual hydrogen peroxide on a sterilized food package
US4512951A (en) * 1980-12-30 1985-04-23 American Sterilizer Company Hydrogen peroxide liquid film sterilization method
US4424188A (en) 1981-12-31 1984-01-03 International Paper Company Sterilization of packaging material
US4744951A (en) * 1983-11-07 1988-05-17 American Sterilizer Company Vaporization method to enhance sterilant penetration
US4924891A (en) * 1986-06-26 1990-05-15 Baxter International Inc. Apparatus for cleaning and/or decontaminating a continuous strip of thermoplastsic film
US4952370A (en) * 1988-05-06 1990-08-28 American Sterilizer Company Hydrogen peroxide sterilization method
US5348556A (en) * 1988-06-14 1994-09-20 Basf Corporation Volatile carpet sanitizing shampoo containing hydrogen peroxide
US5569438A (en) * 1991-07-17 1996-10-29 Tetra Laval Holdings & Finance S.A. Apparatus for sterilizing a continuous packaging material web
US5424034A (en) * 1991-07-17 1995-06-13 Tetra Laval Holdings & Finance Sa Method and an apparatus for sterilizing a continuous packaging material web
WO1995014494A1 (en) * 1993-11-26 1995-06-01 Electrical Control Systems Pty. Ltd. Autoclaving method and apparatus
US5735061A (en) * 1993-11-26 1998-04-07 Electrical Control Systems Pty. Ltd. Autoclaving process and apparatus
US6324815B2 (en) * 1999-08-20 2001-12-04 International Paper Company Apparatus and method for sterilizing an aseptic web
US20050077482A1 (en) * 2002-03-12 2005-04-14 Tetra Laval Holdngs & Finance S.A. Device for treating a packaging material by means of uv radiation
US7145158B2 (en) 2002-03-12 2006-12-05 Tetra Laval Holding & Finance S.A. Device for treating a packaging material by means of UV radiation
US9302847B2 (en) * 2009-02-13 2016-04-05 Sangenic International, Ltd. Waste storage device
US20120073250A1 (en) * 2009-02-13 2012-03-29 Nicholas Cudworth Waste storage device
US20120036814A1 (en) * 2009-04-01 2012-02-16 Tetra Laval Holdings & Finance S.A. Safety chamber
US9156576B2 (en) * 2009-04-01 2015-10-13 Tetra Laval Holdings & Finance S.A. Safety chamber
US20140196407A1 (en) * 2011-10-03 2014-07-17 Tetra Laval Holdings & Finance S.A. Packaging machine and method for producing sealed packages of a food product from a web of a packaging material
US9637260B2 (en) * 2011-10-03 2017-05-02 Tetra Laval Holdings & Finance S.A. Packaging machine and method for producing sealed packages of a food product from a web of a packaging material
USD795606S1 (en) 2015-12-21 2017-08-29 Sangenic International Limited Cassette for a waste storage device
USD799136S1 (en) 2015-12-21 2017-10-03 Sangenic International Limited Waste storage device
CN107469402A (zh) * 2017-09-22 2017-12-15 郑州中技联创环境技术有限公司 一种植物药用成分提取装置及使用方法

Also Published As

Publication number Publication date
AT320162B (de) 1975-01-27
FR2138032A1 (de) 1972-12-29
DE2223911A1 (de) 1972-11-30
IT989590B (it) 1975-06-10
FR2138032B1 (de) 1975-06-13
NL7206538A (de) 1972-11-21
GB1387457A (en) 1975-03-19
BE783730A (fr) 1972-09-18
ES402901A1 (es) 1975-04-16
CH540156A (de) 1973-08-15

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Owner name: RIC RESEARCH INVESTMENT CORPORATION, APARTADO 850

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