EP0872286A2 - Procédé et dispositif pour le nettoyage mécanique des emballages de boissons pour l'usage périodique - Google Patents

Procédé et dispositif pour le nettoyage mécanique des emballages de boissons pour l'usage périodique Download PDF

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Publication number
EP0872286A2
EP0872286A2 EP98201131A EP98201131A EP0872286A2 EP 0872286 A2 EP0872286 A2 EP 0872286A2 EP 98201131 A EP98201131 A EP 98201131A EP 98201131 A EP98201131 A EP 98201131A EP 0872286 A2 EP0872286 A2 EP 0872286A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
cleaning composition
beverage
packings
recurrent
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Withdrawn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
EP98201131A
Other languages
German (de)
English (en)
Other versions
EP0872286A3 (fr
Inventor
Karlheinz Diversey Lever Laping
Holger Diversey Lever Theyssen
Michael G. Diversey Lever Schmidt
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.)
Unilever PLC
Original Assignee
Unilever NV
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
Priority claimed from DE19716311A external-priority patent/DE19716311A1/de
Application filed by Unilever NV filed Critical Unilever NV
Publication of EP0872286A2 publication Critical patent/EP0872286A2/fr
Publication of EP0872286A3 publication Critical patent/EP0872286A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking

Definitions

  • the invention relates to a process and a device for the mechanical cleaning of beverage packings for recurrent usage made of glass or plastic, in particular bottles made of PET, PEN or PC.
  • the known beverage packings in particular bottles made of glass or plastic, are subjected to an intensive cleaning before being re-used, which should comply with the rigid legal regulations and directives for the food industry.
  • the cleaning and filling of the beverage containers generally takes place in a closed system.
  • the known installations generally include a conveying device for the cases with the bottles, a device to take out the bottles and to unscrew the caps, a device to detect remainders in the bottles which are harmful to the health, which are also referred to as sniffers, a machine to clean the bottles, a filling device, a device to screw on the caps, a device to pack the bottles into the cases and a device for the conveyance of the cases with bottles.
  • the cleaning of the beverage packings for recurrent usage only takes place inside the cleaning installation, which usually contains up to three caustic baths.
  • the concentration of NaOH in these baths is between 1.0 and 3.0 wt. %, whereby between 0.05 and 1.0 wt. % of additive is added to the caustic solution for the hardness stabilisation and support of the cleaning action.
  • Such standard cleaning processes are indeed generally used in standard cleaning processes are indeed generally used in practice, however the risk exists, in particular when cleaning plastic packings for recurrent usage made of PET, PEN and PC, that not only difficult removable contamination but also a micro-organism like fungus or yeast cannot or is only partly removed in the cleaning installation.
  • a process for the mechanical cleaning of beverage packings for recurrent usage made of glass or plastic is described in the German application P 196 44 742.9.
  • an aqueous cleaning composition is sprayed via one or more spray nozzles into the beverage packings for recurrent usage.
  • the aqueous cleaning composition thereby is squirted into the bottle and only behind the neck of the bottle the jet of cleaning liquid will turn partly into a misty spray, which thereafter will wet the cylindrical inside wall of the bottle.
  • a jet of cleaning liquid it has turned out that critical parts on the inside of the bottle to be cleaned are not cleaned or are cleaned insufficiently.
  • the transitional area between the neck of the bottle and the cylindrical wall is not reached in the case of big-bellied bottles.
  • Another critical area is the opening of the bottle, because the jet of cleaning liquid is shaped conically and will only strike the inside wall of the bottle below the opening of the bottle.
  • This task is accomplished by applying a process according to claim 1 wherein an air-cleaning composition mixture is sprayed in the form of a spraying mist through the opening into the inside of the beverage packings for recurrent usage. Because a spraying mist leaves the spray nozzle, the area of the opening of the bottle to be cleaned is also caught and wetted with the cleaning composition. The spraying mist enters the inside of the bottle to be cleaned and especially also wets the transitional areas between the neck of the bottle and the cylindrical part of the wall.
  • a spraying mist has the advantage that its velocity in the direction of the bottom of the bottle is not so large as is the case with a squirt of liquid, so that the mist droplets are also moving at right angles to this direction of preference and can get to areas of the wall of the bottle which normally are inaccessible.
  • the invention also provides a device suitable for carrying out the process of the invention and having the characteristics mentioned in claim 5.
  • the aqueous cleaning composition and the air for obtaining the mixture according to the invention are brought together in the spray nozzle.
  • pressurised air in order that the pressure can be adjusted to the type and amount of the aqueous cleaning composition for generating the desired spraying mist.
  • the bottles are preferably pre-treated during the conveyance to the cleaning installation.
  • the cleaning composition is sprayed at the known filling lines in the beverage industry behind the unscrewer as viewed in the direction of conveyance, if present, behind the sniffer.
  • the contact time of the cleaning composition is between 0.5 and 30 minutes.
  • the packings can also be pre-stored before entering the cleaning installation in the case of particularly tenacious contamination and being subjected to a pre-treatment there in order to achieve contact times of up to several weeks.
  • the beverage packings for recurrent usage are conveyed during the pre-treatment in single rows and sprayed with the aqueous cleaning composition by use of a multiple number of spray nozzles, whereby the volume of the liquid produced by each spray nozzle is between 1 and 20 l/h depending on the tenacity and type of contamination.
  • the aqueous cleaning composition for use in the process according to the invention preferably contains at least 0.5% by weight of one or more active cleanign agents.
  • This cleaning composition is generally highly concentrated and is preferably mixed, direclty before discharge, with water, the concentration of the composition in the use solution being generally in the range of 0.1-100% by weight, preferalby 0.5 - 3% wt.
  • a product suitable for effective removal of contamination on the internal surface of the treated bottles can be formulated as follows: % wt Inorganic acid 30 - 50 Wetting agent 18 - 28 Dispersing polymer 2 - 7 Threshold agent 2 - 7 Chelating agent 5 - 10 Water to 100% wt
  • the device suitable for carrying out the process of the invention is characterised in that at least one of the spray nozzles which are placed over the opening of the bottles to be cleaned, is shaped for the production of a spraying mist.
  • a spray nozzle in which liquid and gas can be brought together, in order that a spraying mist can be produced. Therefore, the device is provided with a compressed air device which is connected with the spray nozzle.
  • a mixing device for preparation of an aqueous cleaning composition is provided, which is also connected with the spray nozzle.
  • the mixing device is provided with containers for the cleaning composition as well as for additives.
  • the compressed air device is shaped such that it can be adjusted, in order that the spraying mist can be adjusted to various conditions, like e.g. type and amount of the cleaning composition.
  • Fig. 1 shows a preferred form of the execution of a pre-treatment installation 7.
  • the installation includes spray nozzles 9, 10 , 11 which are arranged in rows over the belt-conveyor 2 directly above the bottle openings 8, a mixing device 12 and a container 13 which contains the cleaning composition as well as a container 14 which contains caustic, acid or a stabilisator solution for the cleaning agent.
  • the highly concentrated cleaning composition and the caustic, acid or the stabilisator solution are led to a mixing point 21 by means of membrane pumps 15, 16 via supply pipes in which dose measuring valves 19, 20 are fitted.
  • a water supply pipe 22, which is connected with a water supply 22a, is also connected with the mixing point 21.
  • a pipe line separator 23 with a draining tap 23a before this separator and a draining tap 23b behind this separator is fitted in the water supply pipe 22 for rinsing purposes.
  • a pressure reducer 24, a magnet valve 25 for the automatic closing of the water supply, for example during a stop of the belt-conveyor 2, and a flow-through gauge 26 follow behind the pipe line separator 23.
  • the mixing point 21 is connected with the spray nozzles 9, 10, 11 via a branching-off supply line 27, in which an air pressure vessel 35 is mounted, whereby needle valves 28, 29 30 for adjusting the volume of liquid produced by the spray nozzles in dependence on the tenacity or kind of the contaminants are mounted in the separate pipe line branches.
  • the spray nozzles 9, 10, 11 are also connected with compressed air pipe lines 41a, b, c, which are connected via a common compressed air pipe line 42 with a compressed air device 40. Air and cleaning composition are being brought together in the spray nozzles 9, 10, 11, so that a fine spraying mist leaves the nozzles, which already wets the top area of the neck of the bottle and which widens to cover the total inside space of the bottle to be cleaned.
  • Pressure and air mixture are adjusted to the type and amount of the required cleaning liquid, so that the desired spray mist can always be achieved.
  • Fig. 2 shows the spraying picture of the spray nozzles 9, 10, 11, which are placed closely above the bottle openings 8, which are connected with the supply pipe line 27.
  • the spray nozzles are shaped such that a conical spraying mist 43 is achieved, which is adjusted such that it already wets the inside of the bottle in the area of the opening 8.
  • the transitional area 35 between the neck 32 of the bottle and the cylindrical inside wall 34, which generally is only reached by a spraying jet with difficulty, is also wetted by the spraying mist 44, which covers the complete inside area space up to the bottom of the bottle. While the bottles move on a belt conveyor into the direction of the cleaning installation, the misty cleaning composition dissolves the clinging contamination, which thereafter is removed in the cleaning installation together with the cleaning composition.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
EP98201131A 1997-04-18 1998-04-09 Procédé et dispositif pour le nettoyage mécanique des emballages de boissons pour l'usage périodique Withdrawn EP0872286A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19716311 1997-04-18
DE19716311A DE19716311A1 (de) 1996-10-28 1997-04-18 Verfahren und Vorrichtung zur maschinellen Reinigung von Getränke-Mehrwegverpackungen

Publications (2)

Publication Number Publication Date
EP0872286A2 true EP0872286A2 (fr) 1998-10-21
EP0872286A3 EP0872286A3 (fr) 2000-01-19

Family

ID=7826955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98201131A Withdrawn EP0872286A3 (fr) 1997-04-18 1998-04-09 Procédé et dispositif pour le nettoyage mécanique des emballages de boissons pour l'usage périodique

Country Status (2)

Country Link
EP (1) EP0872286A3 (fr)
CA (1) CA2234739A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103223412A (zh) * 2013-04-27 2013-07-31 南京乐惠轻工装备制造有限公司 一种啤酒饮料玻璃瓶的预清洗装置及其工作方法
CN103230914A (zh) * 2013-05-11 2013-08-07 燕京啤酒(玉林)有限公司 洗瓶机喷淋管在线清洗装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466182A (en) * 1944-05-29 1949-04-05 Vilbiss Co Spray nozzle
US2811975A (en) * 1952-09-12 1957-11-05 Tatibana Hideo Apparatus for complete washing of a container
DE1757949A1 (de) * 1968-06-29 1971-06-16 Holstein & Kappert Maschf Verfahren zur Reinigung von Flaschen
US4125120A (en) * 1976-02-23 1978-11-14 Abbott Laboratories Washing apparatus for containers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103223412A (zh) * 2013-04-27 2013-07-31 南京乐惠轻工装备制造有限公司 一种啤酒饮料玻璃瓶的预清洗装置及其工作方法
CN103223412B (zh) * 2013-04-27 2015-12-16 南京乐惠轻工装备制造有限公司 一种啤酒饮料玻璃瓶的预清洗装置及其工作方法
CN103230914A (zh) * 2013-05-11 2013-08-07 燕京啤酒(玉林)有限公司 洗瓶机喷淋管在线清洗装置

Also Published As

Publication number Publication date
CA2234739A1 (fr) 1998-10-18
EP0872286A3 (fr) 2000-01-19

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