WO1992016309A1 - Procede de nettoyage et de protection y compris de protection contre la corrosion, de preservation et de desinfection de surfaces et agent s'utilisant dans le procede - Google Patents

Procede de nettoyage et de protection y compris de protection contre la corrosion, de preservation et de desinfection de surfaces et agent s'utilisant dans le procede Download PDF

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Publication number
WO1992016309A1
WO1992016309A1 PCT/DK1992/000096 DK9200096W WO9216309A1 WO 1992016309 A1 WO1992016309 A1 WO 1992016309A1 DK 9200096 W DK9200096 W DK 9200096W WO 9216309 A1 WO9216309 A1 WO 9216309A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
cleaning
film
process according
protection
Prior art date
Application number
PCT/DK1992/000096
Other languages
English (en)
Inventor
Per Bruun FAMMÉ
Original Assignee
Isoline A/S
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 Isoline A/S filed Critical Isoline A/S
Publication of WO1992016309A1 publication Critical patent/WO1992016309A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B05D1/322—Removable films used as masks
    • B05D1/327—Masking layer made of washable film
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
    • A23G9/04—Production of frozen sweets, e.g. ice-cream
    • A23G9/22—Details, component parts or accessories of apparatus insofar as not peculiar to a single one of the preceding groups
    • A23G9/30—Cleaning; Keeping clean; Sterilisation
    • 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
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B08B17/04—Preventing deposition of fouling or of dust by using removable coverings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/008—Temporary coatings
    • C11D2111/42—

Definitions

  • a process for the cleaning and protection including corrosion protection, preservation and disinfection, of surfaces, and an agent for use in the process
  • the present invention relates to a process of the kind stated in the introductory portion of claim 1 for the cleaning and protection, including corrosion protection, preservation and disinfection of surfaces, e.g. in under- takings and institutions in the food and pharmaceutical industries and in hospitals.
  • the process according to the invention is directed at both production rooms and furniture and equipment.
  • the invention also relates to an agent for use when carrying out the process.
  • foam cleaning For daily, current and periodic cleaning of production rooms, including machinery, equipment and furniture, e.g. in the food and pharmaceutical industries, use is mainly made of foam cleaning followed by disinfection.
  • foam cleaning the surfaces to be cleaned are typically first coarsely washed with hot or cold water under pressure (typically 20-120 bar) in view of removing all loose and water soluble dirt. Then the surfaces are foamed with a cleaning agent having a loosening effect on dirt debris, typically in 5-15 min, and which may basic, neutral or acidic depending on the dominating type of dirt.
  • the surfaces are then cleaned with hot or cold water under pressure (typically 20-120 bar) in order to remove debris of dirt and cleaning agent, and finally the cleaned surfaces are disinfected with hot water (above 80°C) or with chemical disinfectants (hypochlorites, peroxides, peracetic acid, quaternary ammonium compounds or the like).
  • This disinfection may optionally be succeeded by a surface treatment with liquid paraffin. All these process steps are usually performed manually by cleaning staff, but the disinfection process may be performed automatic- ally by means of atomizers.
  • the technology is time-consuming because the daily cleaning and disinfection often takes 5-8 hours, in which period the production apparatus cannot be used.
  • the technology is environmentally unfriendly both as regards working environment and surrounding environ ⁇ ment because large amounts of deleterious chemicals are used and because water and energy consumption are large- - 3 -
  • the invention relates to a process for the protection (including corrosion protection, preserva- tion and disinfection) and cleaning of all surfaces subjected to daily, periodical or current cleaning and which between treatment and cleaning are or may be exposed to water and aqueous solutions, such as all external and internal surfaces in the food industry, wet-room surfaces, transport materiel, furniture, equipment and the like.
  • the process according to the invention is thus usable for all surfaces which are cleaned daily, currently or periodically, and where the surfaces between treatment and cleaning are not exposed to basic solutions (pH ⁇ 9) or solutions containing solvents which without the presence of base are capable of dissolving the applied plastic film.
  • the process according the invention is characterized in that the cleaned surfaces are coated with a substance forming a dense, aseptic and water insoluble plastic film on which all kinds of dirt can settle and which subsequently is removable by washing with water adjusted to pH ⁇ 9 or with any other liquid having dis ⁇ solving effect, whereby also the dust settled on the film is removed.
  • the invention is based on the recognition that if all surfaces in e.g. production rooms, including surfaces of equipment and furniture, are completely clean and prior to the start of production have been applied with a substance which is chemically inert and non-toxic and which forms a dense, water insoluble, protective and germ-free film on the surfaces, which film is easily removable by means of water having a pH-value of 9 or more or other aqueous solutions capable of dissolving the film, then the surfaces will be aseptic at the start of production. Contaminations of any kind which are settled on the surfaces can then be removed after the production merely by washing with water adjusted to pH ⁇ 9 or with any other aqueous solution capable of dissolving the film.
  • the film- forming substance may be applied automatically by means of any kind of suitable atomizer, while the washing with pH-adjusted water is preferably performed manually. Also the pH-a justed water can, however, be applied automatically, whereafter washing is with clean water. Hereby the cleaning will be extremely simplified in comparison with the known technique, and the production surfaces will after cleaning be aseptic and germ-free.
  • the cleaning of the surfaces with pH-adjusted water is performed solely by washing irrespective of the contamina- tion type, and there are no special demands on pressure, temperature or other parameters.
  • the pH-value of the water must be adjusted to at least 9 or else the water must be added with chemicals capable of dissolving the film.
  • the film and the dirt thereon loses its adhesiveness to the surface which is thereafter completely clean.
  • a new water insoluble, dense film is applied by means of an automatic atomizer or by any other application method.
  • Danish patent application No. 2894/77 discloses a process for the protection and cleaning of surfaces exposed to soiling.
  • the thus known process involves surface treatment with water soluble agents, and it is consequent- ly only usable for protection of hydrofobic, oily dirt on surfaces which moreover not before the cleaning are influenced by water or aqueous solutions.
  • the process according to the invention involves a surface treatment for the protection of the surface against both hydrofobic and hydrophilic dirt, the surface being applied with a water and oil insoluble film. Therefore the process according to the invention is usable on surfaces which between application of the plastic film and cleaning are exposed to water, which e.g. is so within the food industry.
  • the surface treatment performed by the process according to the invention furthermore results in an aseptic film whereby the treatment causes a disinfection.
  • the film used can be employed in connection with foodstuffs.
  • the film-forming agent used by the process according to the invention can be any substance of a mixture of such substances which by application to cleaned surfaces form a dense film which is not dissolved by water at pH-values below 9, which are dissolved by water at pH-values of 9 or more or other aqueous solutions, and which can be approved in connection with food.
  • the agent most preferred for use in the process according to the invention is a plastic polymer, e.g. in the form of a combination of maleate resin and polyethylene.
  • Plastic polymers having the above properties are moreover either pure polymer dispersions like e.g. a combination of acrylates and polyethylene or the above combination of polyethylenes and montan wax.
  • the reason why plastic polymers after drying (film-formation) are removable with base is either (1) that the plastic polymer in its chemical composition contains free acid groups which by neutralization with base entails reduced adhesiveness to surfaces and/or dissolution of plastic structures, or (2) that the plastic polymer is water soluble because of the base content (e.g. ammonia), which during drying and film formation evaporates, since the plastic polymer by react ⁇ ion with base subsequently can be made water soluble again.
  • the base content e.g. ammonia
  • the aqueous solution of the plastic polymer is basic because of the ammonia content, but neutral or acidic following film-formation because of evaporation of ammonia.
  • This pH-shift can, by addition of an acid/base colour-indicator, such as e.g. phenol- phthalein (colourless at pH ⁇ 8.2-9.8, and red at pH >8.2- 9.8) to the plastic polymer solution, if pH is more than 9, be used for controlling whether the application is correct on all surfaces (the applied solution being bright red), whether a plastic film is present on all surfaces (the film turning red by contact with base) and whether all surfaces are cleaned correctly (the film turning red by cleaning with a basic solution (pH >9)).
  • an acid/base colour-indicator such as e.g. phenol- phthalein (colourless at pH ⁇ 8.2-9.8, and red at pH >8.2- 9.8)
  • polyethylene and maleate resin is preferred because it is extremely suited for the purpose: Thus it has been approved in connection with foodstuffs, and it has high adhesiveness and large anti-release effect. Furthermore it is completely waterproof and has a high dirt-repellent capability, and is also extremely wear resistant. The toxicity is negligent, and the agent contains no phosphate, is not marked hazardous and is biodegradable.
  • the film-forming agent can be applied automatically in closed rooms by means or aerosol nozzles.
  • the process according to the invention employs pH-adjusted water for the cleaning.
  • the required pH-adjustment to pH ⁇ 9 can be performed with any chemical providing alkaline reaction in the pH-area ⁇ 9.
  • Chemicals such as e.g. sodium hydroxide, potassium hydroxide and metasilicates, are thus usable.
  • the process according to the invention is usable in combination with all kinds of periodic cleaning of surfaces, such as foam cleaning, manual cleaning, circulation cleaning, cleaning of transport equipment, in washing machines, when cleaning containers etc.
  • the hygiene measurements were based on germ count on sampled specimens, and the hygiene was assessed according to a point system as follows:
  • a point value of 2 or more indicates that the cleaning was insufficient. In all cases, i.e. at all sampling points, the colony number, however, was below 1, which gives 0 point. That is, the cleaning was in all cases most satisfactory.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

Procédé de nettoyage et de protection, y compris de protection contre la corrosion, de préservation et de désinfection de toutes surfaces soumises à un nettoyage journalier, périodique ou régulier et pouvant être exposées, entre le traitement et le nettoyage, à de l'eau possédant un pH < 9, d'après lequel on applique une substance aux surfaces nettoyées - de préférence un polymère plastique - formant une pellicule dense, aseptique et insoluble à l'eau, sur laquelle peuvent se déposer tous les types d'impuretés. On enlève ladite pellicule en la lavant avec de l'eau possédant un pH » 9, ce qui permet d'enlever également les impuretés se trouvant déposées sur la pellicule. On peut revêtir ensuite les surfaces d'une nouvelle pellicule. On peut, de ce fait, effectuer le nettoyage et la protection des salles et des équipements en un temps très court, sans utiliser de produits chimiques agressifs, de l'eau chaude ou des dispositifs à pression et sans risque de formation bactérienne résistante. On économise de l'eau, de l'énergie, des produits de nettoyage et du personnel et on protège l'environnement extérieur et intérieur.
PCT/DK1992/000096 1991-03-25 1992-03-25 Procede de nettoyage et de protection y compris de protection contre la corrosion, de preservation et de desinfection de surfaces et agent s'utilisant dans le procede WO1992016309A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK0533/91 1991-03-25
DK91533A DK53391D0 (da) 1991-03-25 1991-03-25 Fremgangsmaade til semiautomatisk rengoering og konservering af overflader og middel til brug ved fremgangsmaaden

Publications (1)

Publication Number Publication Date
WO1992016309A1 true WO1992016309A1 (fr) 1992-10-01

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Application Number Title Priority Date Filing Date
PCT/DK1992/000096 WO1992016309A1 (fr) 1991-03-25 1992-03-25 Procede de nettoyage et de protection y compris de protection contre la corrosion, de preservation et de desinfection de surfaces et agent s'utilisant dans le procede

Country Status (4)

Country Link
AU (1) AU1451092A (fr)
CA (1) CA2106859A1 (fr)
DK (1) DK53391D0 (fr)
WO (1) WO1992016309A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635567A2 (fr) * 1993-07-23 1995-01-25 Reckitt &amp; Colman Inc. Procédé et composition pour faciliter l'enlèvement de taches salissant des surfaces solides
EP1029552A1 (fr) * 1999-02-18 2000-08-23 Arconia GmbH Agent, méthode, appareil et utilisation pour la désinfection biologique de l'air avec de l'air
WO2000058410A1 (fr) * 1999-03-25 2000-10-05 Wilhelm Barthlott Procede de realisation de surfaces autonettoyantes pouvant etre retirees
US8993111B2 (en) 2008-10-31 2015-03-31 Rohm And Haas Company Blocking and stain resistant surface treated articles and methods for making

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723493B2 (de) * 1977-05-25 1980-05-22 Unilease S.A., Luxemburg Verfahren zur Reinhaltung von verschmutzungsgefährdeten Oberflächen
EP0014597A1 (fr) * 1979-02-13 1980-08-20 Sterwin Ag. Procédé d'application et de décapage de peinture
SE422953B (sv) * 1976-06-30 1982-04-05 Nordtend Ab Forfarande for skydd och rengoring av ytor utsatta for nedsmutsning med hydrofobt material
EP0371378A1 (fr) * 1988-11-26 1990-06-06 Henkel Kommanditgesellschaft auf Aktien Revêtement temporaire pour cabines de peinture
SE462319B (sv) * 1987-06-17 1990-06-11 Bioboat Ab Foerfarande foer att underlaetta avlaegsnande av en icke oenskvaerd kontamination fraan en yta
EP0405341A1 (fr) * 1989-06-26 1991-01-02 Henkel Corporation Composition masquante et procédÀ©
EP0468244A2 (fr) * 1990-07-27 1992-01-29 RUDOLF WILD GmbH &amp; Co. INTERNATIONAL KG Récipient en matière synthétique réutilisable, sa fabrication et son utilisation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE422953B (sv) * 1976-06-30 1982-04-05 Nordtend Ab Forfarande for skydd och rengoring av ytor utsatta for nedsmutsning med hydrofobt material
DE2723493B2 (de) * 1977-05-25 1980-05-22 Unilease S.A., Luxemburg Verfahren zur Reinhaltung von verschmutzungsgefährdeten Oberflächen
EP0014597A1 (fr) * 1979-02-13 1980-08-20 Sterwin Ag. Procédé d'application et de décapage de peinture
SE462319B (sv) * 1987-06-17 1990-06-11 Bioboat Ab Foerfarande foer att underlaetta avlaegsnande av en icke oenskvaerd kontamination fraan en yta
EP0371378A1 (fr) * 1988-11-26 1990-06-06 Henkel Kommanditgesellschaft auf Aktien Revêtement temporaire pour cabines de peinture
EP0405341A1 (fr) * 1989-06-26 1991-01-02 Henkel Corporation Composition masquante et procédÀ©
EP0468244A2 (fr) * 1990-07-27 1992-01-29 RUDOLF WILD GmbH &amp; Co. INTERNATIONAL KG Récipient en matière synthétique réutilisable, sa fabrication et son utilisation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635567A2 (fr) * 1993-07-23 1995-01-25 Reckitt &amp; Colman Inc. Procédé et composition pour faciliter l'enlèvement de taches salissant des surfaces solides
EP0635567A3 (fr) * 1993-07-23 1996-11-27 Kodak Ltd Procédé et composition pour faciliter l'enlèvement de taches salissant des surfaces solides.
EP1029552A1 (fr) * 1999-02-18 2000-08-23 Arconia GmbH Agent, méthode, appareil et utilisation pour la désinfection biologique de l'air avec de l'air
WO2000058410A1 (fr) * 1999-03-25 2000-10-05 Wilhelm Barthlott Procede de realisation de surfaces autonettoyantes pouvant etre retirees
US8993111B2 (en) 2008-10-31 2015-03-31 Rohm And Haas Company Blocking and stain resistant surface treated articles and methods for making

Also Published As

Publication number Publication date
DK53391D0 (da) 1991-03-25
AU1451092A (en) 1992-10-21
CA2106859A1 (fr) 1992-09-26

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