EP0528217B1 - Verfahren und Vorrichtung zum Behandeln von Mehrwegflaschen aus Kunststoff - Google Patents

Verfahren und Vorrichtung zum Behandeln von Mehrwegflaschen aus Kunststoff Download PDF

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Publication number
EP0528217B1
EP0528217B1 EP92112875A EP92112875A EP0528217B1 EP 0528217 B1 EP0528217 B1 EP 0528217B1 EP 92112875 A EP92112875 A EP 92112875A EP 92112875 A EP92112875 A EP 92112875A EP 0528217 B1 EP0528217 B1 EP 0528217B1
Authority
EP
European Patent Office
Prior art keywords
bottles
process according
bottle
gas
volume
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.)
Expired - Lifetime
Application number
EP92112875A
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German (de)
English (en)
French (fr)
Other versions
EP0528217A1 (de
Inventor
Egon Ahlers
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.)
Krones AG
Original Assignee
Krones AG
Krones AG Hermann Kronseder Maschinenfabrik
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 Krones AG, Krones AG Hermann Kronseder Maschinenfabrik filed Critical Krones AG
Publication of EP0528217A1 publication Critical patent/EP0528217A1/de
Application granted granted Critical
Publication of EP0528217B1 publication Critical patent/EP0528217B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C7/00—Concurrent cleaning, filling, and closing of bottles; Processes or devices for at least two of these operations
    • B67C7/0073—Sterilising, aseptic filling and closing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C7/00—Concurrent cleaning, filling, and closing of bottles; Processes or devices for at least two of these operations

Definitions

  • the invention relates to a method for treating empty reusable plastic bottles according to the preamble of claim 1 and a device suitable for carrying it out according to the preamble of claim 21.
  • Reusable plastic bottles like reusable glass bottles, must be cleaned thoroughly before refilling. While lye temperatures of 80 degrees Celsius and more are completely problem-free with glass bottles, such lye temperatures would lead to intolerable deformation or even complete destruction of the bottles when cleaning plastic bottles. PET bottles are therefore currently treated with an alkali temperature of around 58 degrees Celsius. However, even at this relatively low temperature, which is just portable due to the required cleaning effect, the bottles shrink slightly. The resulting reduction in volume has reached an intolerable size after about 20 revolutions of a reusable bottle, so that the bottle in question is no longer usable. In the same sense, temperature loads on the way to or from the consumer or at the consumer also affect the bottles, especially in hot countries and in the summer months. The achievable circulation figures for reusable plastic bottles, especially PET, have so far been far below the usual circulation figures for glass bottles.
  • a device for treating reusable plastic bottles with a filling element with a seal for the bottle mouth and a lifting device pressing the bottles against the bottle of the type mentioned at the outset is known from WO 91/18823, which has a higher priority.
  • the filling member has a supply line for a hot gas with a control valve and a supply line for a compressed gas with a control valve.
  • the invention has for its object to provide a method for treating reusable plastic bottles and a device for its implementation, with which the achievable number of cycles or service life is increased noticeably.
  • the increase in volume of the bottles according to the invention at least approximately compensates for the shrinkage during cleaning and other influences.
  • the volume increase is carried out before each new filling, the number of cycles can be doubled without any problems.
  • the increase in volume can be carried out for a specific bottle type with constant parameters, so that the desired constant or at least only a slight reduction in the bottle content is ensured on a statistical average.
  • the bottles can also be measured in terms of volume and / or dimensions, and the increase in volume can be according to the measured values for a batch of bottles or for each individual bottle can be controlled individually. In this way, the shrinkage of the bottles can be compensated for within much narrower limits. In the simplest case, it is sufficient to measure the height and / or the diameter of the bottles.
  • the volume increase can take place at different times and in different locations, e.g. at a collection point for reusable bottles. It is particularly expedient if it takes place after cleaning the bottles with hot lye and immediately before filling the bottles with a drink or the like within a filling system for reusable bottles. The shrinkage of the bottles during cleaning is then immediately compensated for and the increase in volume of the bottles can be integrated into the function of the filling system.
  • the volume can be increased on the way of the bottles from a cleaning machine to a filling machine, for which a separate station is required.
  • the volume can also be increased within a filling machine, so that there is no need for a separate station and the additional effort compared to a conventional filling system remains low.
  • the increase in volume according to the invention brings about an increase in the number of rotations as well as an increase in the filling accuracy with the usual "height filling” or a Improvement of the appearance of the bottles with regard to the filling height in the case of a "custom filling".
  • the alkali temperature and thus the cleaning effect can be increased without any adverse effects.
  • the increase in volume itself is advantageously carried out by the measures specified in claims 8 to 18. These can be mastered at a low cost with regard to the decisive parameters and easily adapted to the bottle material. In particular when using steam, there is the additional effect of sterilizing the interior of the bottle. In this way, the shelf life of the filled liquid can be increased significantly.
  • the volume is expediently only increased for those bottles which have suffered a loss of content as a result of shrinkage, and the volume increase is restricted in such a way that the volume achieved does not exceed the nominal content of a bottle in its original state.
  • the device according to FIG. 1 has a filling element 1 with a housing 14, which is attached laterally to the boiler 15 of a rotary counter-pressure filling machine, not shown any further. This is set up for filling PET reusable bottles 16 - hereinafter referred to as bottles - with a drink.
  • a supply line 4 for saturated steam (indicated by dots) with a control valve 5, a supply line 6 for CO2 under a pressure of 4 bar (indicated by crosses) with a control valve 7, a supply line 12 for the drink from top to bottom formed or arranged with a valve 13 and a servomotor 17 and a discharge line 18 for the gas emerging from the bottle 16 with a control valve 19.
  • the feed lines 4 and 6 and the discharge line 18 are connected with the interposition of their control valves to the upper end of a gas pipe 8, which is arranged in a height-adjustable manner in the housing 14 and is connected to the servomotor 17.
  • the gas pipe 8 protrudes downward from the housing 14 and carries the valve 13 for the beverage, which cooperates with a valve seat 22 formed in the housing 14.
  • an outlet opening 11 for the beverage which is concentric with the gas pipe 8.
  • an annular chamber 21 is formed in the housing 14, in which a sealing ring 2 is arranged so as to be vertically movable.
  • the chamber 21 is connected to the discharge line 18 via a channel 23.
  • the connection between the chamber 21 and the discharge line 18 via the channel 23 is open (see FIG. 1); If the sealing ring 2 assumes its upper end position, the connection is interrupted (see FIG. 2).
  • the device also has a lifting device 3 for the bottles 16 to be treated, consisting of a plate for supporting the bottle base and a pneumatic lifting cylinder (not shown further) and a control cam.
  • a lifting device 3 for the bottles 16 to be treated consisting of a plate for supporting the bottle base and a pneumatic lifting cylinder (not shown further) and a control cam.
  • the lifting device can also have a hooking element with a U-shaped recess, which engages below the support ring on the head of the bottle 16.
  • a corresponding lifting device 3a is indicated in FIG. 2.
  • control valves 5, 7, 19 and the servomotor 17 are actuated by a control device 9, to which the probe 20 is also connected. Furthermore, a measuring device 10 for the bottle height and possibly other parameters such as tightness are connected to the control device 9.
  • the structure of the measuring device is known for example from German Offenlegungsschrift 37 22 422.
  • the method for treating bottles 16 which can be carried out with the device described above proceeds as follows: The height of the bottle 16 coming from a cleaning machine, not shown, which is cleaned by hot soapy water by soaking and spraying, is next measured by the measuring device 10 and checked for leaks. The measured value for the height is forwarded to the control device 9; the measured value for the tightness is input into a sorting device (not shown) for separating leaky bottles 16.
  • the control valve 5 remains closed and there is no steam supply. Instead, the control valve 5 can also be opened briefly, for about 0.5 seconds, in order to introduce a short burst of steam, which is used only for sterilizing the inside of the bottle, via the feed line 4 and the gas pipe 8 into the bottle.
  • the control valve 5 is opened accordingly via the control device 9, for example in a range of one to three seconds. Due to the saturated steam flowing in via the feed line 4 and the gas pipe 8 into the bottle 16 and flowing out again via the annular chamber 21, the channel 23 and the discharge line 18, the inner surface of the bottle 16 and partly also the wall is heated sufficiently to subsequently have a To allow deformation of the bottle 16. Directly on the surface, the temperature is approx. 100 degrees Celsius, correspondingly less inside the wall. Molecular changes do not take place here and a subsequent stretching of the bottle material is not possible. During steaming, there is a slight increase in pressure in the bottle to approx. 1.2 bar, due to the flow resistance for the steam. However, this internal pressure is not sufficient for permanent deformation of the bottle 16.
  • the still warm bottle wall is permanently deformed outward in the sense of an increase in volume.
  • the heat supply by the steam and the increase in internal pressure by the CO2 are coordinated such that the bottle volume does not exceed the original nominal volume, so the bottle 16 is not overstretched.
  • the beverage to be filled can be introduced into the bottle 16, the CO2 previously used to deform the bottle now serving in the usual manner as a span gas.
  • the filling process is controlled with the aid of the probe 20 by the control device 9, wherein the displaced CO2 can escape into the open by opening the control valve 19.
  • the increase in volume that can be achieved with the method described above is around 3 milliliters for a conventional reusable PET bottle with a nominal content of 1.5 liters. This increase in volume is sufficient to compensate for the shrinkage when cleaning the bottle. If there is no measuring device 10, the control valve 5 for all bottles 16 is of the same length for a mean period of e.g. Open for 1.5 seconds.

Landscapes

  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
EP92112875A 1991-08-16 1992-07-28 Verfahren und Vorrichtung zum Behandeln von Mehrwegflaschen aus Kunststoff Expired - Lifetime EP0528217B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4126951 1991-08-16
DE4126951A DE4126951A1 (de) 1991-08-16 1991-08-16 Verfahren und vorrichtung zum behandeln von mehrwegflaschen aus kunststoff

Publications (2)

Publication Number Publication Date
EP0528217A1 EP0528217A1 (de) 1993-02-24
EP0528217B1 true EP0528217B1 (de) 1995-11-02

Family

ID=6438330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112875A Expired - Lifetime EP0528217B1 (de) 1991-08-16 1992-07-28 Verfahren und Vorrichtung zum Behandeln von Mehrwegflaschen aus Kunststoff

Country Status (6)

Country Link
US (1) US5320144A (ja)
EP (1) EP0528217B1 (ja)
JP (1) JPH05193696A (ja)
BR (1) BR9203159A (ja)
CA (1) CA2076172A1 (ja)
DE (2) DE4126951A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9311427U1 (de) * 1993-07-31 1994-09-08 Krones Ag Hermann Kronseder Maschinenfabrik, 93073 Neutraubling Vorrichtung zum Füllen von Gefäßen mit einer Flüssigkeit
FR2766473B1 (fr) * 1997-07-22 1999-09-17 Sidel Sa Procede pour le remplissage de recipients, et installation pour la mise en oeuvre
DE10242509B4 (de) * 2002-09-12 2008-03-27 Krones Ag Verfahren und Vorrichtung zum Regenerieren von retournierten Mehrwegflaschen aus Kunststoff
FR2848203B1 (fr) * 2002-12-04 2005-07-29 Sidel Sa Procede et installation de regulation du remplissage d'un recipient avec un liquide
US7963302B2 (en) * 2006-09-26 2011-06-21 Emhart Glass S.A. Machine for testing container capacity
JP4990368B2 (ja) * 2006-11-29 2012-08-01 シデル ホールディングス アンド テクノロジー エスエー 充填バルブユニット
DE102011120164A1 (de) * 2011-12-06 2013-06-06 Khs Gmbh Füllelement sowie Füllsystem
JP6594772B2 (ja) 2012-04-30 2019-10-23 ジーイー・ヘルスケア・アクスイェ・セルスカプ 発泡性組成物を容器に充填する方法
FR3014352B1 (fr) 2013-12-09 2016-01-22 Sidel Participations Dispositif de traitement en serie de corps creux comportant une tige de traitement commandee en coulissement par un actionneur electrique et procede de traitement
DE102014104872A1 (de) * 2014-04-04 2015-10-08 Krones Ag Verfahren und Vorrichtung zum Befüllen eines zu befüllenden Behälters mit einem Füllprodukt
AT515905B1 (de) * 2014-11-13 2016-01-15 Grünewald Fruchtsaft Gmbh Steril-Befüll- bzw. Spüleinrichtung
WO2016154269A1 (en) * 2015-03-23 2016-09-29 Tansey Jr Francis X Fluid filling station

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018823A1 (de) * 1990-06-06 1991-12-12 Krones Ag, Hermann Kronseder Maschinenfabrik Verfahren und vorrichtung zum sterilen abfüllen von getränkeflüssigkeiten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1027597A (en) * 1961-12-18 1966-04-27 Owens Illinois W C Improved process and apparatus for packaging a liquid-containing food product
US3578038A (en) * 1967-09-15 1971-05-11 Federal Mfg Co Receptacle filling method
US3674060A (en) * 1970-12-14 1972-07-04 Continental Can Co Apparatus for filling and adjusting the contents level in flexible containers
US3973603A (en) * 1974-06-18 1976-08-10 Franz Henry H Control for filling flexible bottles or containers
DE3809852A1 (de) * 1988-03-24 1989-10-05 Seitz Enzinger Noll Masch Verfahren zum aseptischen bzw. sterilen abfuellen von fluessigem fuellgut in behaelter sowie vorrichtung zum durchfuehren dieses verfahrens
US4956033A (en) * 1989-05-22 1990-09-11 Norman R. Martin Process for reclaiming plastic containers
DE3927489A1 (de) * 1989-08-21 1991-02-28 Alfill Getraenketechnik Vorrichtung zum fuellen von behaeltern

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018823A1 (de) * 1990-06-06 1991-12-12 Krones Ag, Hermann Kronseder Maschinenfabrik Verfahren und vorrichtung zum sterilen abfüllen von getränkeflüssigkeiten

Also Published As

Publication number Publication date
JPH05193696A (ja) 1993-08-03
EP0528217A1 (de) 1993-02-24
BR9203159A (pt) 1993-03-30
US5320144A (en) 1994-06-14
DE4126951A1 (de) 1993-02-18
CA2076172A1 (en) 1993-02-17
DE59204183D1 (de) 1995-12-07

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