EP0793711B1 - Procede de nettoyage - Google Patents
Procede de nettoyage Download PDFInfo
- Publication number
- EP0793711B1 EP0793711B1 EP95940201A EP95940201A EP0793711B1 EP 0793711 B1 EP0793711 B1 EP 0793711B1 EP 95940201 A EP95940201 A EP 95940201A EP 95940201 A EP95940201 A EP 95940201A EP 0793711 B1 EP0793711 B1 EP 0793711B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sequestrant
- weight
- aqueous composition
- bottles
- alkaline agent
- 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.)
- Revoked
Links
- 238000000034 method Methods 0.000 title claims description 29
- 238000004140 cleaning Methods 0.000 title claims description 13
- 239000003352 sequestering agent Substances 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 229920000058 polyacrylate Polymers 0.000 claims description 5
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 claims description 4
- 238000007865 diluting Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 11
- 235000011121 sodium hydroxide Nutrition 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 235000013405 beer Nutrition 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920002125 Sokalan® Polymers 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 101000983338 Solanum commersonii Osmotin-like protein OSML15 Proteins 0.000 description 2
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical class [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- PMYUVOOOQDGQNW-UHFFFAOYSA-N hexasodium;trioxido(trioxidosilyloxy)silane Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-][Si]([O-])([O-])O[Si]([O-])([O-])[O-] PMYUVOOOQDGQNW-UHFFFAOYSA-N 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000020124 milk-based beverage Nutrition 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- GIPRGFRQMWSHAK-UHFFFAOYSA-M sodium;2-propan-2-ylbenzenesulfonate Chemical compound [Na+].CC(C)C1=CC=CC=C1S([O-])(=O)=O GIPRGFRQMWSHAK-UHFFFAOYSA-M 0.000 description 1
- 235000014214 soft drink Nutrition 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
- C11D3/3765—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in liquid compositions
-
- 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
- C11D3/16—Organic compounds
- C11D3/36—Organic compounds containing phosphorus
- C11D3/361—Phosphonates, phosphinates or phosphonites
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/06—Hydroxides
Definitions
- the present invention relates to a method of cleaning glass containers.
- the conventional cleaning solution usually contains about 1% by weight of sodium hydroxide and an anti-foam agent and is applied at a temperature of around 80°C. It is often applied by a soaking stage followed by a spray stage, prior to rinsing, or else by just spraying before rinsing.
- scuffing which produces whitish circles or part-circles around the exterior of the bottle. It is believed that scuffing is produced partly by chemical errosion of the glass surface by the cleaning solution and partly by mechanical abrasion, e.g. between the bottles themselves or between the bottles and parts of the cleaning apparatus.
- a method of cleaning glass containers in a continuous-feed process comprising the step of applying to the containers, an aqueous composition comprising an alkaline agent and a weak sequestrant.
- glass items e.g. drinking glasses
- domestic or industrial warewashing compositions which contain inter alia alkaline agents and sequestrants.
- this is not in a continuous-feed process where the aforementioned scuffing problem occurs (see e.g. CH-A-0-679-311).
- the aqueous composition contains from 0.1% to 10% by weight of the alkaline agent, more preferably from 0.5% to 5% by weight and especially from 0.75% to 1.5% by weight.
- the aqueous composition contains from 50 to 1000 ppm by weight of the weak sequestrant, more preferably from 100 to 500 ppm by weight and especially from 200 to 400 ppm by weight.
- the weak sequestrant may for example comprise one or more agents selected from polyacrylate-type sequestrants and phosphonate sequestrants.
- Preferred polyacrylate-type sequestrants include polyacrylic acids or polyacrylates, especially low molecular weight polyacrylates, e.g. MW ⁇ 10,000, e.g. Sokalan PA15 ex BASF or Norasol LMW45 ex Norso-Haas, and maleic anhydride/(meth)acrylic acid copolymers, e.g. Sokalan CP5 ex BASF.
- Suitable phosphonate sequestrants include the range sold under the "Dequest" Trade Mark, ex Monsanto.
- Suitable alkaline agents include alkali metal hydroxides, e.g. sodium or potassium hydroxides, alkali metal silicates, including metasilicates, e.g. sodium silicate having a mole ratio of SiO 2 :Na 2 O of about 3.3:1 or less, including from about 1.8:1 to about 2.2:1 (normally referred to as sodium disilicate).
- Sodium hydroxide is especially preferred.
- the alkaline agent could comprise two or more different such materials.
- an aqueous composition for continuous-feed cleaning of glass containers comprising from 0.5% to 10% by weight of an alkaline agent and from 50 to 1000 ppm by weight of a weak sequestrant.
- alkaline agent and weak sequestrant for such a composition are as indicated above.
- composition used in the method of the present invention may also contain some non-ionic anti-foam and/or wetting agent, for example in a weight ratio of from 1:50 to 1:10 relative to the weak sequestrant. It is also possible for the composition to contain one or more other minor ingredients which are usual in such compositions. However, often the composition will be substantially free of other ingredients.
- the step applying the aqueous composition to the glass containers will be followed by a rinsing step, preferably using water, optionally including a rinse aid.
- a rinsing step preferably using water, optionally including a rinse aid.
- the aqueous composition itself is conveniently prepared by diluting a pre-concentrated aqueous solution of the weak sequestrant with an aqueous solution of the alkaline agent.
- the latter will normally contain all of the alkaline agent to be present in the final solution and all of the water, except for the amount contained in the pre-concentrated aqueous solution of the sequestrant.
- the method of the present invention can be applied to the continuous-feed cleaning of any glass containers, for example beverage containers but one useful example is in the cleaning of beer bottles.
- aqueous solution of 15% by weight weak sequestrant (being either variant (a) polyacrylate sequestrant, i.e. Sokalan PA15 ex BASF, av MW 1500 or variant (b) phosphonate sequestrant, i.e. Dequest 2000 ex Monsato) was diluted in a bath with a 2% by weight aqueous solution of sodium hydroxide containing non-ionic anti-foam agent, such that the amount of weak sequestrant in final solution was 300 ppm by weight. The amount of anti-foam in final solution was in the weight ratio of 2:15 relative to the sequestrant.
- weak sequestrant being either variant (a) polyacrylate sequestrant, i.e. Sokalan PA15 ex BASF, av MW 1500 or variant (b) phosphonate sequestrant, i.e. Dequest 2000 ex Monsato
- the amount of anti-foam in final solution was in the weight ratio of 2:15 relative to the sequestrant.
- the final solution in each case was applied to beer bottles in an industrial bottle washing machine at a maximum temperature of 80°C, first in a soaking step and then in a spray step. This cleaning process was followed by rinsing using softened water at 40°C as a first rinse step and then cold fresh softened water as a second rinse step.
- 0.3 litre Dutch standard beer bottles were subjected to alternate mechanical and chemical conditions, for both a control bottle batch and a bottle batch subjected to chemical conditions according to the present invention, whereafter the level of scuffing was assessed both visually and by a charge coupled device (CCD) camera.
- CCD charge coupled device
- the CCD camera recorded the number of non reflective pixels on the bottle. On the basis of this figure the bottle was classified into a scuffing category.
- the bottles were subjected to mechanical conditions by placement on a 10 meter conveyor loop for 10 minutes.
- Chemical control conditions consisted of soaking 50 control bottles in a 1% solution of NaOH in soft water ( ⁇ 1° german hardness) at 80°C.
- the chemical conditions consisted of soaking 50 bottles in 1% solution of NaOH plus 0.2% of the formulation A.
- Formulation A Nitrilotrimethylene phosphonic acid 15.0% Sodium cumene sulphonate 3.6% Non ionic surfactant 2.0% Distilled water rest
- Visual level 5 is considered to be the maximum acceptable level for bottles.
- the bottles were put into crates which were put at the beginning of the washing line.
- the bottles followed the standard route of: decrater, bottlewasher, filler, tunnel pasteurizer, labeling machine, crate packer.
- the bottles were collected from the filled crates, emptied and reintroduced at the beginning of the line.
- the chemical treatment consisted of washing the bottles in a regular bottlewasher at the conditions and temperatures prescribed.
- the bottles were also assessed by using the CCD camera to determine scuffing levels as described before.
- the bottlewashing conditions in the control were: 1 ⁇ 0.1% NaOH solution, temperature 80 ⁇ 1°C.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Claims (15)
- Procédé de nettoyage de récipients en verre dans un processus d'alimentation en continu, le procédé comportant l'étape consistant à appliquer aux récipients une composition aqueuse comprenant un agent alcalin et un séquestrant faible.
- Procédé selon la revendication 1, dans lequel la solution aqueuse contient de 0,1% à 10% en poids de l'agent alcalin.
- Procédé selon la revendication 2, dans lequel la solution aqueuse contient de 0,5% à 5% en poids de l'agent alcalin.
- Procédé selon la revendication 4, dans lequel la solution aqueuse contient de 0,75% à 2% en poids de l'agent alcalin.
- Procédé selon l'une quelconque des revendications précédentes, dans lequel la composition aqueuse contient de 50 à 1000 parties par million PPM en poids du séquestrant faible.
- Procédé de la revendication 5, dans lequel la composition aqueuse contient de 100 à 500 PPM en poids du séquestrant faible.
- Procédé de la revendication 6, dans lequel la composition aqueuse contient de 200 à 400 PPM en poids du séquestrant faible.
- Procédé selon l'une quelconque des revendications précédentes dans lequel le séquestrant faible comporte un séquestrant de type polyacrylate.
- Procédé selon la revendication 8, dans lequel le séquestrant de type polyacrylate a un poids moléculaire moyen inférieur à 10000.
- Procédé selon l'une quelconque des revendications 1 à 7, dans lequel, le séquestrant faible comporte un séquestrant de type phosphonate.
- Procédé selon l'une quelconque des revendications précédentes, dans lequel l'agent alcalin comporte un hydroxyde de sodium
- Procédé selon l'une quelconque des revendications précédentes dans lequel l'étape consistant à appliquer la composition aqueuse est suivie par une étape de rinçage.
- Procédé selon l'une quelconque des revendications précédentes, dans lequel on prépare la composition aqueuse en diluant une solution aqueuse préconcentrée du séquestrant faible avec une solution aqueuse de l'agent alcalin.
- Procédé selon l'une quelconque des revendications précédentes dans lequel les récipients en verre ont la forme de bouteilles.
- Procédé selon l'une quelconque des revendications précédentes, dans lequel ledit procédé est utilisé pour réduire l'usure dans les récipients en verre.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9423495 | 1994-11-21 | ||
GB9423495A GB9423495D0 (en) | 1994-11-21 | 1994-11-21 | Cleaning method |
PCT/EP1995/004537 WO1996016159A1 (fr) | 1994-11-21 | 1995-11-16 | Procede de nettoyage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0793711A1 EP0793711A1 (fr) | 1997-09-10 |
EP0793711B1 true EP0793711B1 (fr) | 2000-04-26 |
Family
ID=10764750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95940201A Revoked EP0793711B1 (fr) | 1994-11-21 | 1995-11-16 | Procede de nettoyage |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0793711B1 (fr) |
AU (1) | AU4173596A (fr) |
BR (1) | BR9509693A (fr) |
DE (1) | DE69516537T2 (fr) |
ES (1) | ES2145937T3 (fr) |
FI (1) | FI972124A (fr) |
GB (1) | GB9423495D0 (fr) |
WO (1) | WO1996016159A1 (fr) |
ZA (1) | ZA959795B (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997038079A1 (fr) * | 1996-04-09 | 1997-10-16 | Unilever N.V. | Solution servant a laver une bouteille sans provoquer d'attaque chimique |
US6367487B1 (en) | 1999-08-11 | 2002-04-09 | Diversey Lever, Inc. | Anti-etch and cleaning composition for glass bottles |
US20020183220A1 (en) * | 2001-04-23 | 2002-12-05 | Francesco Falsina | Anti-scuffing treatment for alkaline bottle washing systems |
MX2018016314A (es) | 2016-07-04 | 2019-09-18 | Diversey Inc | Metodo y composicion para una emulsion de aceite en agua estable para mejora estetica de recipientes de alimentos y bebidas. |
EP3500657A1 (fr) | 2016-08-16 | 2019-06-26 | Diversey, Inc. | Composition pour l'amélioration esthétique de récipients pour aliments et boissons, et procédés associés |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH679311A5 (fr) * | 1989-01-07 | 1992-01-31 | Sandoz Ag |
-
1994
- 1994-11-21 GB GB9423495A patent/GB9423495D0/en active Pending
-
1995
- 1995-11-16 AU AU41735/96A patent/AU4173596A/en not_active Abandoned
- 1995-11-16 ES ES95940201T patent/ES2145937T3/es not_active Expired - Lifetime
- 1995-11-16 EP EP95940201A patent/EP0793711B1/fr not_active Revoked
- 1995-11-16 DE DE69516537T patent/DE69516537T2/de not_active Revoked
- 1995-11-16 BR BR9509693A patent/BR9509693A/pt not_active Application Discontinuation
- 1995-11-16 WO PCT/EP1995/004537 patent/WO1996016159A1/fr not_active Application Discontinuation
- 1995-11-17 ZA ZA959795A patent/ZA959795B/xx unknown
-
1997
- 1997-05-19 FI FI972124A patent/FI972124A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
FI972124A0 (fi) | 1997-05-19 |
ES2145937T3 (es) | 2000-07-16 |
ZA959795B (en) | 1997-05-19 |
EP0793711A1 (fr) | 1997-09-10 |
FI972124A (fi) | 1997-05-19 |
DE69516537T2 (de) | 2000-08-10 |
BR9509693A (pt) | 1997-10-14 |
DE69516537D1 (de) | 2000-05-31 |
WO1996016159A1 (fr) | 1996-05-30 |
GB9423495D0 (en) | 1995-01-11 |
AU4173596A (en) | 1996-06-17 |
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