CA2246339A1 - Method of cleaning drink bottles - Google Patents
Method of cleaning drink bottles Download PDFInfo
- Publication number
- CA2246339A1 CA2246339A1 CA 2246339 CA2246339A CA2246339A1 CA 2246339 A1 CA2246339 A1 CA 2246339A1 CA 2246339 CA2246339 CA 2246339 CA 2246339 A CA2246339 A CA 2246339A CA 2246339 A1 CA2246339 A1 CA 2246339A1
- Authority
- CA
- Canada
- Prior art keywords
- cleaning
- bottles
- available oxygen
- cleaning liquid
- cleaning formulation
- 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.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3947—Liquid compositions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Detergent Compositions (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Proposed is a method of cleaning bottles in a bottle-cleaning plant in which the bottles are acted on by a cleaning agent containing active oxygen. This ensures thorough and satisfactory removal of mould.
Description
~ CA 02246339 1998-08-13 A Process for Cleaning Beverage Bottles This invention relates to a process for cleaning bottles, more particu-larly plastic bottles, in bottle cleanin~3 machines.
In known processes, returnable bottles for beverages are cleaned in bottle cleaning machines using additive-containing sodium hydroxide which has been heated to as high as 85~C. In summer in particular, the returnable bottles contain a large number of microorganisms when they come back empty from the consumer. Such bottles are often exposed for several days or even weeks to temperatures favorable to the growth of the microorganisms.
Yeasts thus have the opportunity to proliferate and to ferment any residual beverage while molds form Alawns~ in the bottle.
To remove most of the mold, the bottles are rinsed with water (preliminary cleaning) and then cleaned in liquor baths with about 1.5%
caustic soda heated to 50-85~C. However, this cleaning operation is not sufficient to remove all the microorganisms and mold. For this reason, it is well-known that complexing agents, for example EDTA (ethylenediamine tetraacetic acid) and/or NTA (nitrilotriacetate), can be added to the liquor baths so that molds are satisfactorily removed in the case of glass bottles.
However, in the cleaning of refillable plastic bottles, for example of PET (polyethylene terephthalate), the use of liquor baths to which complexing agents, such as those mentioned above, have been added is not successful.
After the cleaning cycle, unacceptable residues of mold and dead yeast cells remain behind on the surfaces of the PET bottles.
Accordingly, the problem addressed by the present invention was to achieve thorough and satisfactory removal of microorganisms and molds and, in particular, complete separation of the mold lawn from the plastic surfaces in the cleaning of glass bottles and, in particular, plastic bottles consisting . CA 02246339 1998-08-13 preferably of polycarbonate, polyethylene naphthalate (PEN) or- above all -of PET in bottle cleaning machines.
According to the invention, this problem has been solved by the process mentioned at the beginning which is characterized in that a cleaning formulation containing available oxygen is allowed to act on the bottles. It hassurprisingly been found that, where available oxygen is added to the cleaning formulation, an excellent cleaning result is obtained after only a few minutes.
By Aavailable oxygen@ is meant oxygen which can be eliminated in reactive (atomic) form from an oxygen carrier. Examples of available oxygen carriers are perborates, percarbonates and, in particular, hydrogen peroxide.
It is specifically pointed out that the invention is not directed to disinfection by destruction of the mold and microorganisms, but ratherto the mechanical separation and removal of these particular contaminants.
The cleaning formulation containing available oxygen can be applied to or introduced into the bottles in various ways. Spray tubes are preferably used for this purpose. In one embodiment, the cleaning formulation containing available oxygen is sprayed onto and/or into the bottles, particu-larly during the preliminary cleaning phase. An optimal combination of cleaning-active available oxygen and spraying mechanism is achieved in this way.
In selecting the composition of the cleaning formulation, it has proved to be of advantage for the cleaning formulation, which normally contains 0.5 to 5% and, more particularly, 1 to 4% of caustic soda, to contain 0.001 to 2%, preferably 0.005 to 1.5% and more preferably 0.1 to 1% of available oxygen.
The cleaning formulation may additionally contain surfactants, namely anionic, cationic and/or nonionic surfactants, for example sugar surfactants, which facilitate or improve the separation of the microorganisms and, in particular, the mold lawn. In another advantageous embodiment, the cleaning formulation contains complexing agents, for example polyacrylates, ' CA 02246339 1998-08-13 tripolyphosphates, organic phosphonates; chelating carboxylates, for example citrates, maleates, gluconates, EDTA and/or NTA, and terpenes and/or solvents, for example alcohols or dimethyl sulfoxide. These additional ingredients may be present in the cleaning formulation either separately or in combination. These additional ingredients improve the cleaning performance of available oxygen.
The invention is not confined to application of the cleaning formulation containing available oxygen to or into the bottles through spray tubes. Other ways of contacting the bottles with the cleaning formulation may also be used.
Thus, in another embodiment of the invention, the cleaning formulation containing available oxygen is added to the liquor bath of the bottle cleaning machine, more particularly by continuos introduction of cleaning formulation into the liquor feed line of the bottle cleaning machine.
In this case, too, the concentration of available oxygen in the liquor bath should be from 0.001 to 2% and is preferably is from 0.005 to 1.5% and more preferably from 0.1 to 1%.
The temperature of the cleaning formulation should be in the range from 40 to 90~C and is preferably in the range from 50 to 80OC. These preferred temperature ranges also apply where the cleaning formulation containing available oxygen is applied by the spray method mentioned above.
In anotherfavorable embodiment, the cleaning formulation containing available oxygen is allowed to act on the bottles for 0.5 to 10 minutes, preferablyfor 1 to 8 minutes and more preferablyfrom 2 to 7 minutes. These exposure times app!y b~~th in cases whgFQ~he~l~aningfQrmw!a~ c~taining available oxygen is applied in the liquor bath and where it is applied by spraying.
To stabilize available oxygen, the cleaning formulation preferably contains one or more complexing agents, for example phosphoric acid, tripolyphosphate and/or sodium diphosphate.
In known processes, returnable bottles for beverages are cleaned in bottle cleaning machines using additive-containing sodium hydroxide which has been heated to as high as 85~C. In summer in particular, the returnable bottles contain a large number of microorganisms when they come back empty from the consumer. Such bottles are often exposed for several days or even weeks to temperatures favorable to the growth of the microorganisms.
Yeasts thus have the opportunity to proliferate and to ferment any residual beverage while molds form Alawns~ in the bottle.
To remove most of the mold, the bottles are rinsed with water (preliminary cleaning) and then cleaned in liquor baths with about 1.5%
caustic soda heated to 50-85~C. However, this cleaning operation is not sufficient to remove all the microorganisms and mold. For this reason, it is well-known that complexing agents, for example EDTA (ethylenediamine tetraacetic acid) and/or NTA (nitrilotriacetate), can be added to the liquor baths so that molds are satisfactorily removed in the case of glass bottles.
However, in the cleaning of refillable plastic bottles, for example of PET (polyethylene terephthalate), the use of liquor baths to which complexing agents, such as those mentioned above, have been added is not successful.
After the cleaning cycle, unacceptable residues of mold and dead yeast cells remain behind on the surfaces of the PET bottles.
Accordingly, the problem addressed by the present invention was to achieve thorough and satisfactory removal of microorganisms and molds and, in particular, complete separation of the mold lawn from the plastic surfaces in the cleaning of glass bottles and, in particular, plastic bottles consisting . CA 02246339 1998-08-13 preferably of polycarbonate, polyethylene naphthalate (PEN) or- above all -of PET in bottle cleaning machines.
According to the invention, this problem has been solved by the process mentioned at the beginning which is characterized in that a cleaning formulation containing available oxygen is allowed to act on the bottles. It hassurprisingly been found that, where available oxygen is added to the cleaning formulation, an excellent cleaning result is obtained after only a few minutes.
By Aavailable oxygen@ is meant oxygen which can be eliminated in reactive (atomic) form from an oxygen carrier. Examples of available oxygen carriers are perborates, percarbonates and, in particular, hydrogen peroxide.
It is specifically pointed out that the invention is not directed to disinfection by destruction of the mold and microorganisms, but ratherto the mechanical separation and removal of these particular contaminants.
The cleaning formulation containing available oxygen can be applied to or introduced into the bottles in various ways. Spray tubes are preferably used for this purpose. In one embodiment, the cleaning formulation containing available oxygen is sprayed onto and/or into the bottles, particu-larly during the preliminary cleaning phase. An optimal combination of cleaning-active available oxygen and spraying mechanism is achieved in this way.
In selecting the composition of the cleaning formulation, it has proved to be of advantage for the cleaning formulation, which normally contains 0.5 to 5% and, more particularly, 1 to 4% of caustic soda, to contain 0.001 to 2%, preferably 0.005 to 1.5% and more preferably 0.1 to 1% of available oxygen.
The cleaning formulation may additionally contain surfactants, namely anionic, cationic and/or nonionic surfactants, for example sugar surfactants, which facilitate or improve the separation of the microorganisms and, in particular, the mold lawn. In another advantageous embodiment, the cleaning formulation contains complexing agents, for example polyacrylates, ' CA 02246339 1998-08-13 tripolyphosphates, organic phosphonates; chelating carboxylates, for example citrates, maleates, gluconates, EDTA and/or NTA, and terpenes and/or solvents, for example alcohols or dimethyl sulfoxide. These additional ingredients may be present in the cleaning formulation either separately or in combination. These additional ingredients improve the cleaning performance of available oxygen.
The invention is not confined to application of the cleaning formulation containing available oxygen to or into the bottles through spray tubes. Other ways of contacting the bottles with the cleaning formulation may also be used.
Thus, in another embodiment of the invention, the cleaning formulation containing available oxygen is added to the liquor bath of the bottle cleaning machine, more particularly by continuos introduction of cleaning formulation into the liquor feed line of the bottle cleaning machine.
In this case, too, the concentration of available oxygen in the liquor bath should be from 0.001 to 2% and is preferably is from 0.005 to 1.5% and more preferably from 0.1 to 1%.
The temperature of the cleaning formulation should be in the range from 40 to 90~C and is preferably in the range from 50 to 80OC. These preferred temperature ranges also apply where the cleaning formulation containing available oxygen is applied by the spray method mentioned above.
In anotherfavorable embodiment, the cleaning formulation containing available oxygen is allowed to act on the bottles for 0.5 to 10 minutes, preferablyfor 1 to 8 minutes and more preferablyfrom 2 to 7 minutes. These exposure times app!y b~~th in cases whgFQ~he~l~aningfQrmw!a~ c~taining available oxygen is applied in the liquor bath and where it is applied by spraying.
To stabilize available oxygen, the cleaning formulation preferably contains one or more complexing agents, for example phosphoric acid, tripolyphosphate and/or sodium diphosphate.
Most modern bottle washing machines use a combination of spraying and steeping. The bottles are placed in so-called baskets and transported through several treatment zones in which they are treated for certain times.
In the spraying section, the bottles with their openings facing downwards are treated with a concentrated spray jet.
In the steeping section, the bottles are completely immersed in the liquor steeping bath and transported through the liquor treatment zone.
Spraying with the cleaning formulation containing available oxygen can take place either in only one liquor zone, for example in liquor I spraying, or in several liquor zones, for example in liquor 1, liquor 11, liquor 111 spraying. The liquor baths generally contain NaOH and a cleaning additive. In addition, the described cleaning formulation containing available oxygen is added. Such impurities as label remains, soil, glue constituents and the like are also present.
The cleaning additives are frequently acidic solutions which, after addition to the alkaline cleaning liquor, form the corresponding salts which in turn develop a cleaning-active effect.
In the spraying section, the bottles with their openings facing downwards are treated with a concentrated spray jet.
In the steeping section, the bottles are completely immersed in the liquor steeping bath and transported through the liquor treatment zone.
Spraying with the cleaning formulation containing available oxygen can take place either in only one liquor zone, for example in liquor I spraying, or in several liquor zones, for example in liquor 1, liquor 11, liquor 111 spraying. The liquor baths generally contain NaOH and a cleaning additive. In addition, the described cleaning formulation containing available oxygen is added. Such impurities as label remains, soil, glue constituents and the like are also present.
The cleaning additives are frequently acidic solutions which, after addition to the alkaline cleaning liquor, form the corresponding salts which in turn develop a cleaning-active effect.
Claims (14)
1. The use of a cleaning formulation containing available oxygen in the cleaning of bottles, particularly plastic bottles, in bottle cleaning machines for removing mold residues from the bottles.
2. The use claimed in claim 1, characterized in that the cleaning formulation containing available oxygen is sprayed onto and/or into the bottles, particularly during the preliminary cleaning phase.
3. The use claimed in any of the preceding claims, characterized in that the cleaning formulation contains 0.001 to 2%, preferably 0.005 to 1.5% and more preferably 0.1 to 1% of available oxygen.
4. The use claimed in any of the preceding claims, characterized in that the available oxygen is supplied by perborates, percarbonates or by hydrogen peroxide as available oxygen carriers.
5. The use claimed in any of the preceding claims, characterized in that the cleaning liquid additionally contains surfactants.
6. The use claimed in any of the preceding claims, characterized in that the cleaning liquid additionally contains complexing agents.
7. The use claimed in any of the preceding claims, characterized in that the cleaning liquid additionally contains terpenes.
8. The use claimed in any of the preceding claims, characterized in that the cleaning liquid additionally contains solvents.
9. The use claimed in any of the preceding claims, characterized in that available oxygen is added to the liquor bath of the bottle cleaning machine, more particularly by continuous introduction of available oxygen into the liquorfeed line of the bottle cleaning machine.
10. The use claimed in the preceding claim, characterized in that the concentration of available oxygen in the liquor bath is from 0.001 to 2%, preferably from 0.005 to 1.5% and more preferably from 0.1 to 1%.
11. The use claimed in any of the preceding claims, characterized in that the temperature of the cleaning liquid is in the range from 40 to 90°C and preferably in the range from 50 to 80°C.
12. The use claimed in any of the preceding claims, characterized in that the cleaning formulation containing available oxygen is allowed to act on the bottles for 0.5 to 10 mins., preferably for 1 to 8 mins. and more preferably for2 to 7 mins.
13. The use claimed in any of the preceding claims, characterized in that the cleaning formulation contains one or more complexing agents to stabilize the available oxygen carrier.
14. The use claimed in any of the preceding claims for removing mold residues from bottles, more particularly from PET bottles, polycarbonate bottles, PEN bottles and/or glass bottles.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19605356A DE19605356A1 (en) | 1996-02-14 | 1996-02-14 | Cleaning plastic drink bottles for re-use |
| DE19605356.0 | 1996-02-14 | ||
| DE19626137.6 | 1996-07-01 | ||
| DE1996126137 DE19626137A1 (en) | 1996-07-01 | 1996-07-01 | Process for the mechanical cleaning of reusable containers soiled with stubborn dirt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2246339A1 true CA2246339A1 (en) | 1997-08-21 |
Family
ID=26022873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2246339 Abandoned CA2246339A1 (en) | 1996-02-14 | 1997-02-06 | Method of cleaning drink bottles |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0880412A1 (en) |
| JP (1) | JP2000505349A (en) |
| AU (1) | AU1721997A (en) |
| BR (1) | BR9707517A (en) |
| CA (1) | CA2246339A1 (en) |
| WO (1) | WO1997029859A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9867369B2 (en) | 2009-05-28 | 2018-01-16 | Ecolab Usa Inc. | Wetting agents for aseptic filling |
| US11834624B2 (en) | 2014-03-07 | 2023-12-05 | Ecolab Usa Inc. | Alkyl amides for enhanced food soil removal and asphalt dissolution |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8987702B2 (en) | 2007-05-01 | 2015-03-24 | Micron Technology, Inc. | Selectively conducting devices, diode constructions, constructions, and diode forming methods |
| CN103849498A (en) * | 2012-11-29 | 2014-06-11 | 埃科莱布美国股份有限公司 | Cleaning additive and cleaning method adopting the cleaning additive |
| DE102021132308A1 (en) * | 2021-12-08 | 2023-06-15 | Krones Aktiengesellschaft | Method and apparatus for cleaning inverted containers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB913417A (en) * | 1959-05-26 | 1962-12-19 | Bronswerk Nv | Bottle cleaning plant, particularly for milk bottles |
| US3908680A (en) * | 1973-10-12 | 1975-09-30 | Flow Pharma Inc | Methods for cleaning and bleaching plastic articles |
| JPH0238278B2 (en) * | 1986-04-30 | 1990-08-29 | Akio Sato | KATSUSEISANSOSUI |
| DE3832885A1 (en) * | 1988-09-28 | 1990-04-05 | Ifah Inst Fuer Angewandte Hygi | METHOD FOR MACHINE CLEANING, DISINFECTING AND RINSING DISHES AND THE APPROPRIATE AGENT |
| FR2712828B1 (en) * | 1993-11-22 | 1996-02-16 | Pernod Ricard | Process for washing refillable plastic bottles. |
-
1997
- 1997-02-06 JP JP9528948A patent/JP2000505349A/en active Pending
- 1997-02-06 CA CA 2246339 patent/CA2246339A1/en not_active Abandoned
- 1997-02-06 EP EP97904381A patent/EP0880412A1/en not_active Withdrawn
- 1997-02-06 AU AU17219/97A patent/AU1721997A/en not_active Abandoned
- 1997-02-06 BR BR9707517-5A patent/BR9707517A/en unknown
- 1997-02-06 WO PCT/EP1997/000524 patent/WO1997029859A1/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9867369B2 (en) | 2009-05-28 | 2018-01-16 | Ecolab Usa Inc. | Wetting agents for aseptic filling |
| US10091988B2 (en) | 2009-05-28 | 2018-10-09 | Ecolab Usa Inc. | Wetting agents for aseptic filling |
| US11834624B2 (en) | 2014-03-07 | 2023-12-05 | Ecolab Usa Inc. | Alkyl amides for enhanced food soil removal and asphalt dissolution |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000505349A (en) | 2000-05-09 |
| BR9707517A (en) | 2000-01-04 |
| EP0880412A1 (en) | 1998-12-02 |
| WO1997029859A1 (en) | 1997-08-21 |
| AU1721997A (en) | 1997-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101876815B1 (en) | Cleaning additive and cleaning method using the same | |
| US5849095A (en) | Anti-etch bottle washing solution | |
| US10899999B2 (en) | Solvent application in bottle wash using amidine based formulas | |
| EP1232114B1 (en) | Segmented process for cleaning-in-place | |
| US6530386B1 (en) | Method of cleaning returnable bottles | |
| US5399284A (en) | Process for removing starch-containing contamination from dishes and surfactant concentrates suitable for this process | |
| DE60104208T2 (en) | DETERGENT COMPOSITION AND DISHWASHING METHOD | |
| CA2246339A1 (en) | Method of cleaning drink bottles | |
| AU714410B2 (en) | A process for the machine cleaning of returnable containers soiled with stubborn soils | |
| JP2002500245A (en) | Detergent composition and container cleaning method | |
| US6562296B1 (en) | Process for cleaning surgical instruments | |
| US6106633A (en) | Method of preventing damage to bottle labels and composition thereof | |
| US4505836A (en) | Plastic bottle cleaner composition and method | |
| CA2221470C (en) | Method of removing mold from plastic bottles and mold removing additive | |
| US5858105A (en) | Method for washing plastic returnable beverage bottles with alkaline solution and ultrasonic energy | |
| AU716488B2 (en) | Cleaning formulation, additive for a cleaning formulation and process for cleaning bottles using such | |
| JP4163754B2 (en) | Cleaning method for polyethylene terephthalate container | |
| CA2333215C (en) | Method for cleaning a container | |
| DE19605356A1 (en) | Cleaning plastic drink bottles for re-use | |
| CN110846145A (en) | Washing machine cleaning agent with powerful sterilization effect and preparation method thereof | |
| JP2968223B2 (en) | Detergent for liquor handling equipment and method for cleaning liquor handling equipment | |
| Miller et al. | Detergents and sterilization in breweries | |
| JP2000204395A (en) | Bleaching and cleaning composition | |
| MXPA99004582A (en) | Cleaning method for polyethylene terephtalate containers | |
| CZ624690A3 (en) | agent for degreasing, cleaning and sanitation of objects made of metal, glass or ceramic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |