EP3858754B1 - Method and package for reducing adhesions within filled containers - Google Patents

Method and package for reducing adhesions within filled containers Download PDF

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Publication number
EP3858754B1
EP3858754B1 EP20215232.8A EP20215232A EP3858754B1 EP 3858754 B1 EP3858754 B1 EP 3858754B1 EP 20215232 A EP20215232 A EP 20215232A EP 3858754 B1 EP3858754 B1 EP 3858754B1
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EP
European Patent Office
Prior art keywords
release agent
vessel
container
contents
low 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.)
Active
Application number
EP20215232.8A
Other languages
German (de)
French (fr)
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EP3858754A1 (en
Inventor
Jens Ziniel
Rainer Orben
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.)
Schulz Farben und Lackfabrik GmbH
Schulz Farben und Lackfabrik GmbH
Original Assignee
Schulz Farben und Lackfabrik GmbH
Schulz Farben und Lackfabrik GmbH
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Publication of EP3858754A1 publication Critical patent/EP3858754A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/32—Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • B05B13/0636—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies by means of rotatable spray heads or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • 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
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/069—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies the hollow bodies having a closed end
    • 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
    • B05D2259/00—Applying the material to the internal surface of hollow articles other than tubes
    • 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
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/12—Paint cans; Brush holders; Containers for storing residual paint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/28—Handles
    • B65D25/32—Bail handles, i.e. pivoted rigid handles of generally semi-circular shape with pivot points on two opposed sides or wall parts of the conainter

Definitions

  • the invention relates to a method and a container and the use of a container to reduce adhesions within filled containers according to the preambles of claims 1, 10 and 11.
  • the invention relates to a method for applying a release agent to reduce adhesions in buckets or cans, especially for preservative-free emulsion paints.
  • Paints in particular dispersion paints that are free of preservatives, are usually filled in plastic or metal containers with a sealing lid. When the container is filled, there is usually an air space between the surface of the paint and the inside of the cap.
  • the inside of the cap By moving the container, the inside of the cap can be wetted with paint. Under certain conditions, this can adhere to the inside of the cap and dry up after a while. When the container is subsequently opened, the dried particles flake off and fall into the paint contained in the container. As a result, the quality of the subsequent coating of the color is massively reduced.
  • the insides of the cap and optionally also the insides of the container were wetted with a release agent in a preparatory step before the container was filled.
  • special containers with a non-stick coating were used. Then the filling, in particular the paint, was placed in the container.
  • the AU 2014 203 757 A1 discloses a method of applying a release agent to the interior surfaces of a paint can and a cap before the paint is poured into the can.
  • the EP 1 625 948 A1 discloses a paint can in which the adhesion of paint to the inside is to be avoided by a specific surface structure. This design requires additional work steps and is therefore significantly more expensive.
  • the EP 2 259 977 B1 discloses a container including an inner liner and a method of attaching such a liner to a container. This design is associated with additional work steps and thus higher costs.
  • the U.S. 5,911,251 discloses applying release agent to a container for paint on a conveyor with a shower head.
  • the U.S. 2008/0210582 discloses introducing release agents based on polyols, polyethylene glycol, glycerine and/or mineral oil into containers for paint, the release agent being applied in a specific quantity or layer thickness.
  • the U.S. 6,354,063 discloses applying diethylene glycol to latex paints as a release agent to prevent skinning of latex paints.
  • Suitable separating agents are usually oils (paraffin oil) which, when handled manually, are difficult to process without leaving any residue.
  • oils paraffin oil
  • the object of the invention is therefore to generate a solution that ensures that the paint cannot dry on the inner surfaces of the container.
  • a suitable separating agent e.g. paraffin oil
  • the release agent is essentially applied to the surface of the filled colours.
  • Another object of the invention is to use a release agent that is not harmful to paint or humans.
  • the method according to the invention is preferably carried out with an ultra low volume metering (9) which comprises one or more nozzles.
  • the release agent is preferably applied using a special ULV nozzle.
  • ULV stands for Ultra Low Volume, i.e. particularly low application rate.
  • the ULV dosing technology works in conjunction with rotating nozzles and creates a narrow range of droplets with optimal distribution and surface wetting without the formation of a spray mist (aerosol).
  • This rotating nozzle works without pressure, the spray pattern is created by centrifugal force and the use of a nozzle disc.
  • the drops are deposited evenly on the target surface by the vertical airflow created by the rotating disc and gravity.
  • paraffin oil is preferably used as a release agent because paraffin oil particularly reduces the adhesion of paint to the inside of the container, including the inside of the closure lid.
  • the inside of the container and the inside of the closure lid had to be wetted with a sponge and paraffin oil.
  • the disadvantage here is that the closure lids cannot be stacked.
  • the ultra-low-volume metering device (9) is connected to the plate and has a rotary drive (1), an inlet for the separating agent (2), a nozzle shaft (4) and a nozzle disk (5).
  • the plate (3) serves as a splash guard that prevents the release agent from spreading unintentionally.
  • the separating agent runs more easily than the contents in the vessel.
  • the release agent is preferably a liquid or suspension.
  • the release agent is particularly preferably an oil, particularly preferably a paraffin oil.
  • the release agent is preferably applied to the boundary surface of the contents of the vessel.
  • the release agent can also be applied to the inner surface of the vessel that is not covered by the contents of the vessel. An application of the release agent to the underside of the closure lid is not necessary according to the invention.
  • the container is preferably filled with content and, opened, held in one or more holding devices (7, 8) for the application of the release agent. Then a plate (3) to which the ultra low volume dispenser (9) is connected is moved in the direction of the upper edge of the vessel of the container (6).
  • the plate (3) can rest on the edge of the vessel. A flush finish with the edge of the vessel is not required according to the invention. Positioning the plate (3) as close as possible to the edge of the vessel provides additional splash protection.
  • the ultra low volume dispenser (9) doses the necessary amount of release agent into the opened container and thus wets the surface of the container contents, preferably the paint , and that part of the inside of the container that is not covered by the contents of the container.
  • the plate (3) including the ultra-low volume dosage (9) embedded therein is moved away from the upper edge of the vessel.
  • the vessel is then closed with a sealing cap. Additional wetting of the cap with the release agent is not required.
  • an ultra low volume metering (9), preferably a rotary nozzle, particularly preferably an ultra low volume nozzle (ULV nozzle), is used to apply the release agent.
  • the ultra-low-volume metering device (9) has a rotating surface, in particular a disc (5), to which the separating agent is fed, in particular onto which the separating agent is trickled.
  • the separating agent is pushed aside by the centrifugal force, whereby special droplet sizes of the separating agent are achieved.
  • the separating agent is therefore thrown off this surface in the form of a narrow droplet spectrum.
  • a vapour-like, mist-like or aerosol-like atomization of the release agent is avoided. In particular, this also prevents the release agent from being inhaled by the operating personnel, so that any health hazards due to inhaling the release agent are avoided.
  • the plate (3) or the vessel or container (6) can be moved manually, mechanically or in some other way.
  • An oil that does not mix with the paint is preferably used as the release agent.
  • the oil is purely a protective film. The original properties of the color are not changed.
  • the paraffin oil preferably used as a separating agent runs so smoothly that when the container is opened or closed with the lid and is moved, the paraffin oil always precedes the paint and wets the respective free inner surfaces of the container before they come into contact with the paint. As a result, the paint no longer adheres to the inside of the container (6) and/or to the underside of the closure lid.
  • the release agent can also be a silicone oil.
  • the choice of release agent also depends on the chemical properties of the vessel or container contents.
  • Paraffin oil is particularly suitable as a release agent because, in contrast to silicone oil, for example, it practically does not evaporate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren und ein Gebinde und die Verwendung eines Gebindes zur Verringerung von Anhaftungen innerhalb von gefüllten Gebinden nach den Oberbegriffen der Ansprüche 1, 10 und 11. Insbesondere betrifft die Erfindung ein Verfahren zur Applikation eines Trennmittels zur Verringerung von Anhaftungen in Eimern oder Dosen insbesondere für konservierungsmittelfreie Dispersionsfarben.The invention relates to a method and a container and the use of a container to reduce adhesions within filled containers according to the preambles of claims 1, 10 and 11. In particular, the invention relates to a method for applying a release agent to reduce adhesions in buckets or cans, especially for preservative-free emulsion paints.

Stand der TechnikState of the art

Farben, insbesondere konservierungsmittelfreie Dispersionsfarben, werden üblicherweise in Kunststoff- bzw. Metallgebinde mit einem Verschlussdeckel abgefüllt. Üblicherweise existiert beim fertigverfüllten Gebinde ein Luftraum zwischen Farbenoberfläche und Verschlussdeckelinnenseite.Paints, in particular dispersion paints that are free of preservatives, are usually filled in plastic or metal containers with a sealing lid. When the container is filled, there is usually an air space between the surface of the paint and the inside of the cap.

Durch Bewegung des Gebindes kann die Verschlussdeckelinnenseite mit Farbe benetzt werden. Diese kann unter gewissen Voraussetzungen an der Verschlussdeckelinnenseite anhaften und nach einiger Zeit antrocknen. Beim nachträglichen Öffnen des Gebindes platzen die angetrockneten Partikel ab und fallen in die im Gebinde enthaltene Farbe. Hierdurch wird die Qualität des späteren Streichbildes der Farbe massiv herabgesetzt.By moving the container, the inside of the cap can be wetted with paint. Under certain conditions, this can adhere to the inside of the cap and dry up after a while. When the container is subsequently opened, the dried particles flake off and fall into the paint contained in the container. As a result, the quality of the subsequent coating of the color is massively reduced.

Der Nachteil dieser Anhaftungen (Flakes) wird bei dem neuen Trend zu konservierungsmittelfreien Farben verstärkt.The disadvantage of these adhesions (flakes) is increased with the new trend towards preservative-free paints.

Bisher wurden die Verschlussdeckelinnenseiten und optional zusätzlich die Gebindeinnenseiten vor Befüllung des Gebindes mit einem Trennmittel in einem arbeitsvorbereitenden Schritt benetzt. Alternativ wurden spezielle Gebinde verwendet, die über eine Antihaftbeschichtung verfügen. Danach wurde die Füllung, insbesondere die Farbe, in das Gebinde eingebracht.Until now, the insides of the cap and optionally also the insides of the container were wetted with a release agent in a preparatory step before the container was filled. Alternatively, special containers with a non-stick coating were used. Then the filling, in particular the paint, was placed in the container.

Die AU 2014 203 757 A1 offenbart ein Verfahren zur Aufbringung eines Trennmittels auf die Innenflächen eines Farbeimers und eines Verschlussdeckels, bevor die Farbe in den Eimer eingefüllt wird.The AU 2014 203 757 A1 discloses a method of applying a release agent to the interior surfaces of a paint can and a cap before the paint is poured into the can.

Die EP 1 625 948 A1 offenbart einen Farbeimer, bei dem das Anhaften von Farbe an den Innenseiten durch eine bestimmte Oberflächenstruktur vermieden werden soll. Diese Gestaltung erfordert zusätzliche Arbeitsschritte und ist somit deutlich kostenintensiver.The EP 1 625 948 A1 discloses a paint can in which the adhesion of paint to the inside is to be avoided by a specific surface structure. This design requires additional work steps and is therefore significantly more expensive.

Die EP 2 259 977 B1 offenbart einen eine Innenauskleidung umfassenden Behälter und ein Verfahren zum Anbringen einer solchen Auskleidung an einen Behälter. Diese Gestaltung ist mit zusätzlichen Arbeitsschritten und damit höheren Kosten verbunden.The EP 2 259 977 B1 discloses a container including an inner liner and a method of attaching such a liner to a container. This design is associated with additional work steps and thus higher costs.

Die US 5,911,251 offenbart, Trennmittel in einen Behälter für Farbe auf einem Fließband mit einem Duschkopf aufzubringen.The U.S. 5,911,251 discloses applying release agent to a container for paint on a conveyor with a shower head.

Die US 2008/0210582 offenbart, Trennmittel auf der Basis von Polyolen, Polyäthylenglykol, Glycerin und/oder Mineralöl in Behälter für Farbe einzubringen, wobei das Trennmittel in einer bestimmten Menge bzw. Schichtdicke aufgebracht wird.The U.S. 2008/0210582 discloses introducing release agents based on polyols, polyethylene glycol, glycerine and/or mineral oil into containers for paint, the release agent being applied in a specific quantity or layer thickness.

Die US 6,354,063 offenbart, Diethylenglykol als Trennmittel auf Latexfarben aufzubringen, um Hautbildungen bei Latexfarben zu verhindern.The U.S. 6,354,063 discloses applying diethylene glycol to latex paints as a release agent to prevent skinning of latex paints.

Die Aufbringung eines geeigneten Trennmittels mit Hilfe eines arbeitsvorbereitenden Schrittes ist arbeits- sowie zeit- und damit ebenfalls kostenintensiv. Bei geeigneten Trennmitteln handelt es sich meist um Öle (Paraffinöl), die bei manueller Handhabung nur schwer rückstandslos verarbeitet werden können. Die Verwendung spezieller Gebinde ist ebenfalls kostenintensiv.The application of a suitable release agent with the help of a preparatory step is labour-intensive, time-consuming and therefore also costly. Suitable separating agents are usually oils (paraffin oil) which, when handled manually, are difficult to process without leaving any residue. The use of special containers is also expensive.

Aufgabenstellungtask

Aufgabe der Erfindung ist es daher eine Lösung zu generieren, die dafür sorgt, dass die Farbe nicht an den inneren Oberflächen des Gebindes antrocknen kann. Hierfür wird ein geeignetes Trennmittel (z.B. Paraffinöl) in das noch nicht durch einen Verschlussdeckel verschlossene Gefäß eingebracht, direkt nachdem die Farbe vollständig eingefüllt wurde. Dies bedeutet, dass das Trennmittel im Wesentlichen auf die Oberfläche der verfüllten Farben aufgetragen wird.The object of the invention is therefore to generate a solution that ensures that the paint cannot dry on the inner surfaces of the container. For this purpose, a suitable separating agent (e.g. paraffin oil) is introduced into the container, which has not yet been sealed with a lid, directly after the paint was completely filled. This means that the release agent is essentially applied to the surface of the filled colours.

Ein weiteres Ziel der Erfindung ist es, ein Trennmittel einzusetzen, das weder für die Farbe noch für den Menschen schädlich ist.Another object of the invention is to use a release agent that is not harmful to paint or humans.

Dies wird erfindungsgemäß mit dem Verfahren gemäß Anspruch 1 sowie einer Verwendung einer Ultra Low Volume-Dosierung nach Anspruch 7 erreicht. In den Unteransprüchen 2 bis 6 sind vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens wiedergegeben.This is achieved according to the invention with the method according to claim 1 and using an ultra low volume dosage according to claim 7 . Advantageous refinements of the method according to the invention are reproduced in dependent claims 2 to 6 .

Bevorzugt wird das erfindungsgemäße Verfahren mit einer Ultra Low Volume-Dosierung (9) durchgeführt, die eine oder mehrere Düsen umfasst.The method according to the invention is preferably carried out with an ultra low volume metering (9) which comprises one or more nozzles.

Bei dem erfindungsgemäßen Verfahren erfolgt das Auftragen des Trennmittels vorzugsweise mit einer speziellen ULV-Düse. ULV steht für Ultra Low Volume, d.h. besonders geringe Ausbringmenge. Die ULV-Dosiertechnik funktioniert in Verbindung mit Rotationsdüsen und erzeugt ein enges Tropfenspektrum mit einer optimalen Verteilung und Oberflächenbenetzung ohne Bildung eines Sprühnebels (Aerosol).In the method according to the invention, the release agent is preferably applied using a special ULV nozzle. ULV stands for Ultra Low Volume, i.e. particularly low application rate. The ULV dosing technology works in conjunction with rotating nozzles and creates a narrow range of droplets with optimal distribution and surface wetting without the formation of a spray mist (aerosol).

Diese Rotationsdüse arbeitet ohne Druck, das Spritzbild wird durch Zentrifugalkraft und Verwendung einer Düsenscheibe erzeugt. Die Tropfen lagern sich durch den von der Rotationsscheibe erzeugten vertikalen Luftstrom und die Schwerkraft gleichmäßig auf der Zieloberfläche ab.This rotating nozzle works without pressure, the spray pattern is created by centrifugal force and the use of a nozzle disc. The drops are deposited evenly on the target surface by the vertical airflow created by the rotating disc and gravity.

Erfindungsgemäß wird bevorzugt Paraffinöl als Trennmittel eingesetzt, weil Paraffinöl das Anhaften von Farbe an den Innenseiten des Gebindes einschließlich der Innenseite des Verschlussdeckels in besonderem Maße vermindert. Im Stand der Technik mussten die Innenseiten des Gebindes und die Innenseite des Verschlussdeckels mit einem Schwamm und dem Paraffinöl benetzt werden. Nachteilig dabei ist, dass die Verschlussdeckel nicht gestapelt werden können.According to the invention, paraffin oil is preferably used as a release agent because paraffin oil particularly reduces the adhesion of paint to the inside of the container, including the inside of the closure lid. In the prior art, the inside of the container and the inside of the closure lid had to be wetted with a sponge and paraffin oil. The disadvantage here is that the closure lids cannot be stacked.

Nachstehend wird eine bevorzugte Ausführungsform der Erfindung anhand der Zeichnung beispielhaft näher erläutert.

  • Figur 1 ist eine schematische Frontansicht eines Gebindes.
  • Figur 1a ist eine schematische Seitenansicht eines Gebindes gemäß Figur 1.
  • Figuren 1 und 1a zeigen eine Ausgestaltung eines nichterfindungsgemäßen Gebindes mit einem Gebinde (6), einer Platte (3) als Spritzschutz, einer Ultra Low Volume-Dosierung (9) zur Applikation des Trennmittels mit einem Rotationsantrieb (1), einem Zulauf für das Trennmittel (2), einer Düsenwelle (4) und einer Düsenscheibe (5), die mit der Platte (3) verbunden ist, und einer Haltevorrichtung (7, 8) für ein Gebinde (6).
  • Figur 2 zeigt eine schematische Frontansicht eines Gebindes (6), bei der die Platte mit der verbundenen Ultra Low Volume-Dosierung (9) über dem Gebinde positioniert ist, welche sich in der Haltevorrichtung (7, 8) befindet.
  • Figur 2a zeigt eine schematische Seitenansicht eines Gebindes gemäß Figur 2.
  • Figuren 2 und 2a zeigen eine Anordnung des Gebindes, wenn das Trennmittel in das Gebinde eingebracht wird. Dabei ist die
  • Platte (3) unmittelbar über dem Rand des Gefäßes des Gebindes (6) angeordnet, das in einer Haltevorrichtung (7, 8) gehalten wird. Erfindungsgemäß wird das mit einem flüssigen bis pastösen oder gelatösen Inhalt, beispielsweise ein Beschichtungsmaterial, bevorzugt eine Farbe, besonders bevorzugt Dispersionsfarbe, besonders bevorzugt konservierungsmittelfreie Dispersionsfarbe, oder eine Farbdispersion, ein Lack, eine Grundierung, eine Lasur, ein Putz, eine Spachtelmasse oder eine Bodenbeschichtung, befüllte noch nicht mit dem Verschlussdeckel verschlossene Gefäß eines Gebindes (6) in einer Haltevorrichtung (7, 8) gehalten und einer Ultra Low Volume-Dosierung zur Applikation des Trennmittels (9) zugeführt, eine Platte (3), die mit der Ultra Low Volume-Dosierung zur Applikation des Trennmittels (9) verbunden ist, unmittelbar über dem Gefäß des Gebindes (6) als Spritzschutz angeordnet, die Platte (3) wird parallel von dem Gefäß wegbewegt und das Gefäß danach mittels des Verschlussdeckels verschlossen.
A preferred embodiment of the invention is explained in more detail below by way of example with reference to the drawing.
  • figure 1 is a schematic front view of a bundle.
  • Figure 1a is a schematic side view of a bundle according to FIG figure 1 .
  • figures 1 and 1a show an embodiment of a container not according to the invention with a container (6), a plate (3) as a splash guard, an ultra-low volume metering device (9) for applying the release agent with a rotary drive (1), an inlet for the release agent (2), a nozzle shaft (4) and a nozzle disk (5) which is connected to the plate (3), and a holding device (7, 8) for a container (6).
  • figure 2 shows a schematic front view of a container (6), in which the plate with the associated ultra-low volume dosage (9) is positioned over the container, which is located in the holding device (7, 8).
  • Figure 2a shows a schematic side view of a container according to FIG figure 2 .
  • Figures 2 and 2a show an arrangement of the container when the release agent is introduced into the container. Here is the
  • Plate (3) arranged immediately above the edge of the vessel of the container (6), which is held in a holding device (7, 8). According to the invention, with a liquid to pasty or gelatinous content, for example a coating material, preferably a paint, particularly preferably emulsion paint, particularly preferably preservative-free emulsion paint, or a color dispersion, a paint, a primer, a glaze, a plaster, a filler or a floor coating , filled vessel of a container (6) not yet closed with the closure lid held in a holding device (7, 8) and fed to an ultra low volume metering for the application of the release agent (9), a plate (3), which with the ultra low Volume dosage is connected to the application of the release agent (9), immediately above arranged on the vessel of the container (6) as a splash guard, the plate (3) is moved away in parallel from the vessel and the vessel is then closed by means of the closure lid.

Nach einer besonderen Ausführungsform ist die Ultra Low Volume-Dosierung (9) mit der Platte verbunden und weist einen Rotationsantrieb (1), einen Zulauf für das Trennmittel (2), eine Düsenwelle (4) und eine Düsenscheibe (5) auf. Die Platte (3) dient als Spritzschutz, der eine ungewollte Verbreitung des Trennmittels verhindert. Erfindungsgemäß ist das Trennmittel leichtläufiger als der in dem Gefäß befindliche Inhalt. Bevorzugt ist das Trennmittel eine Flüssigkeit oder Suspension. Besonders bevorzugt ist das Trennmittel ein Öl, besonders bevorzugt ein Paraffinöl.According to a special embodiment, the ultra-low-volume metering device (9) is connected to the plate and has a rotary drive (1), an inlet for the separating agent (2), a nozzle shaft (4) and a nozzle disk (5). The plate (3) serves as a splash guard that prevents the release agent from spreading unintentionally. According to the invention, the separating agent runs more easily than the contents in the vessel. The release agent is preferably a liquid or suspension. The release agent is particularly preferably an oil, particularly preferably a paraffin oil.

Die Applikation des Trennmittels erfolgt erfindungsgemäß bevorzugt auf die Grenzfläche des Inhalts des Gefäßes. Zudem kann die Applikation des Trennmittels auch auf die innere, von dem Inhalt des Gefäßes nicht bedeckte Oberfläche des Gefäßes erfolgen. Eine Applikation des Trennmittels auf die Unterseite des Verschlussdeckels ist erfindungsgemäß nicht notwendig.According to the invention, the release agent is preferably applied to the boundary surface of the contents of the vessel. In addition, the release agent can also be applied to the inner surface of the vessel that is not covered by the contents of the vessel. An application of the release agent to the underside of the closure lid is not necessary according to the invention.

Bevorzugt wird das Gebinde mit Inhalt gefüllt und geöffnet zur Applikation des Trennmittels in einer oder mehreren Haltevorrichtungen (7, 8) festgehalten. Anschließend wird eine Platte (3), mit welcher die Ultra Low Volume-Dosierung (9) verbunden ist, in Richtung des oberen Rand des Gefäßes des Gebindes (6) bewegt. Die Platte (3) kann auf dem Gefäßrand aufliegen. Ein bündiges Abschließen mit dem Gefäßrand ist erfindungsgemäß nicht erforderlich. Eine möglichst nahe Positionierung der Platte (3) am Gefäßrand gewährt einen zusätzlichen Spritzschutz. Nach dem Bewegen der Platte mit der Ultra Low Volume-Dosierung (9) über den oberen Gebinderand dosiert die Ultra Low Volume-Dosierung (9) eine notwendige Menge Trennmittel in das geöffnete Gebinde und benetzt so die Oberfläche des Gebinde-Inhaltes, vorzugsweise der Farbe, und denjenigen Teil der Gebinde-Innenseiten, die nicht durch den Inhalt des Gebindes abgedeckt sind.The container is preferably filled with content and, opened, held in one or more holding devices (7, 8) for the application of the release agent. Then a plate (3) to which the ultra low volume dispenser (9) is connected is moved in the direction of the upper edge of the vessel of the container (6). The plate (3) can rest on the edge of the vessel. A flush finish with the edge of the vessel is not required according to the invention. Positioning the plate (3) as close as possible to the edge of the vessel provides additional splash protection. After moving the plate with the ultra low volume dispenser (9) over the upper edge of the container, the ultra low volume dispenser (9) doses the necessary amount of release agent into the opened container and thus wets the surface of the container contents, preferably the paint , and that part of the inside of the container that is not covered by the contents of the container.

Nach Abschluss des vorstehend dargestellten Benetzungsprozesses wird die Platte (3) einschließlich der darin eingelassenen Ultra Low Volume-Dosierung (9) vom oberen Gefäßrand wegbewegt. Anschließend wird das Gefäß mit einem Verschlussdeckel verschlossen. Eine zusätzliche Benetzung des Verschlussdeckels mit dem Trennmittel ist nicht erforderlich.After completion of the wetting process described above, the plate (3) including the ultra-low volume dosage (9) embedded therein is moved away from the upper edge of the vessel. The vessel is then closed with a sealing cap. Additional wetting of the cap with the release agent is not required.

Um die Nachteile aus dem Stand der Technik zu überwinden, wird zur Aufbringung des Trennmittels erfindungsgemäß eine Ultra Low Volume-Dosierung (9), vorzugsweise eine Rotationsdüse, besonders bevorzugt eine Ultra Low Volume-Düse (ULV-Düse), eingesetzt. Erfindungsgemäß weist die Ultra Low Volume-Dosierung (9) eine rotierende Fläche auf, insbesondere eine Scheibe (5), der das Trennmittel zugeführt wird, insbesondere auf die das Trennmittel geträufelt wird. Das Trennmittel wird durch die Zentrifugalkraft zur Seite weggedrängt, wodurch spezielle Tropfengrößen des Trennmittels erreicht werden. Das Trennmittel wird also von dieser Fläche in Form eines engen Tropfenspektrums abgeschleudert. Es wird eine dampfartige, nebelartige oder aerosolförmige Zerstäubung des Trennmittels vermieden. Dadurch wird insbesondere auch vermieden, dass das Trennmittel vom Bedienpersonal eingeatmet werden könnte, so dass etwaige Gesundheitsgefährdungen aufgrund des Einatmens des Trennmittels vermieden werden.In order to overcome the disadvantages of the prior art, an ultra low volume metering (9), preferably a rotary nozzle, particularly preferably an ultra low volume nozzle (ULV nozzle), is used to apply the release agent. According to the invention, the ultra-low-volume metering device (9) has a rotating surface, in particular a disc (5), to which the separating agent is fed, in particular onto which the separating agent is trickled. The separating agent is pushed aside by the centrifugal force, whereby special droplet sizes of the separating agent are achieved. The separating agent is therefore thrown off this surface in the form of a narrow droplet spectrum. A vapour-like, mist-like or aerosol-like atomization of the release agent is avoided. In particular, this also prevents the release agent from being inhaled by the operating personnel, so that any health hazards due to inhaling the release agent are avoided.

Es ist auch denkbar, das erfindungsgemäße Verfahren so auszugestalten, dass die Platte (3), mit welcher die Ultra Low Volume-Dosierung (9) verbunden ist, durch eine Seitwärtsbewegung über den oberen Gefäßrand und von diesem wieder weg bewegt wird.It is also conceivable to design the method according to the invention in such a way that the plate (3) to which the ultra-low-volume metering (9) is connected is moved over the upper edge of the vessel and away from it again by a sideways movement.

Es ist auch denkbar, nicht die Platte (3) relativ zum Gefäß bzw. Gebinde (6) zu bewegen, sondern das Gefäß bzw. Gebinde (6) relativ zur Platte (3).It is also conceivable not to move the plate (3) relative to the vessel or container (6), but to move the vessel or container (6) relative to the plate (3).

Die Bewegung der Platte (3) bzw. des Gefäßes bzw. Gebindes (6) kann manuell, maschinenbetrieben oder auf sonstige Weise erfolgen.The plate (3) or the vessel or container (6) can be moved manually, mechanically or in some other way.

Bevorzugt wird als Trennmittel ein Öl verwendet, das sich nicht mit der Farbe vermischt. Das Öl stellt einen reinen Schutzfilm dar. Die ursprünglichen Eigenschaften der Farbe werden dadurch nicht verändert.An oil that does not mix with the paint is preferably used as the release agent. The oil is purely a protective film. The original properties of the color are not changed.

Das bevorzugt als Trennmittel verwendete Paraffinöl ist so leichtläufig, dass dann, wenn das geöffnete oder mit dem Verschlussdeckel verschlossene Gefäß bewegt wird, das Paraffinöl der Farbe immer vorauseilt und die jeweils freien Innenflächen des Gefäßes benetzt, bevor diese mit der Farbe in Kontakt kommen. Die Farbe haftet dadurch nicht mehr an den Innenseiten des Gebindes (6) und/oder an der Unterseite des Verschlussdeckels an.The paraffin oil preferably used as a separating agent runs so smoothly that when the container is opened or closed with the lid and is moved, the paraffin oil always precedes the paint and wets the respective free inner surfaces of the container before they come into contact with the paint. As a result, the paint no longer adheres to the inside of the container (6) and/or to the underside of the closure lid.

Erfindungsgemäß kann das Trennmittel auch ein Silikonöl sein. Die Wahl des Trennmittels hängt auch von den chemischen Eigenschaften des Gefäßes bzw. Gebinde-Inhaltes ab.According to the invention, the release agent can also be a silicone oil. The choice of release agent also depends on the chemical properties of the vessel or container contents.

Paraffinöl ist als Trennmittel insbesondere aus dem Grund gut geeignet, weil es, im Gegensatz zu zum Beispiel Silikonöl, praktisch nicht verdunstet.Paraffin oil is particularly suitable as a release agent because, in contrast to silicone oil, for example, it practically does not evaporate.

Claims (9)

  1. Method of applying a release agent to reduce build-up within a filled container
    wherein the container comprises
    a vessel
    with a closure cap
    a liquid to pasty or gelatinous content in the vessel
    wherein a release agent is used which is more readily runnable than the contents in the vessel
    characterised in that
    the application of the release agent is effected by means of ultra-low volume metering by means of a rotating surface to which the release agent is fed and from which the release agent is centrifuged, and,
    the application to
    the interface of the contents of the vessel and the inner surface of the vessel not covered by the contents of the vessel.
  2. Method according to claim 1, characterised in that the release agent is a liquid or a suspension.
  3. Method according to claim 2, characterised in that the release agent is an oil.
  4. Method according to claim 3, characterised in that the release agent is a paraffin oil.
  5. Method according to claim 1, characterised in that the release agent is not applied to the underside of the closure cap.
  6. Method according to claim 1, characterised in that the vessel filled with the contents and not yet closed with the closure lid is fed to a device for applying the release agent, a plate having the ultra-low volume dosing is positioned over the edge of the vessel as a splash guard, the release agent is applied, the plate is moved away from the vessel in parallel and the vessel is then closed by means of the closure lid.
  7. Method according to claim 1, characterised in that the contents of the vessel comprise a coating material.
  8. Method according to claim 7, characterized in that the content of the vessel is a paint dispersion, a varnish, a primer, a glaze, a plaster, a filler or a floor coating.
  9. Use of an ultra low volume dispenser and a release agent for applying a release agent to reduce build-up within a filled container according to claim 1 or claim 6.
EP20215232.8A 2020-01-28 2020-12-17 Method and package for reducing adhesions within filled containers Active EP3858754B1 (en)

Applications Claiming Priority (1)

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DE102020102029.5A DE102020102029A1 (en) 2020-01-28 2020-01-28 Process and container to reduce buildup within filled containers

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EP3858754A1 EP3858754A1 (en) 2021-08-04
EP3858754B1 true EP3858754B1 (en) 2023-07-05

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Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5009369A (en) * 1990-02-16 1991-04-23 Monsanto Company Spray shield unit
US5911251A (en) * 1997-06-30 1999-06-15 Benjamin Moore & Co. Anti-skinning method and apparatus
US6247603B1 (en) 1999-08-20 2001-06-19 Continental Plastic Containers, Inc. Container coating for increasing product outage
US6354063B1 (en) * 2000-03-20 2002-03-12 The Glidden Company Method of inhibiting non-dispersible paint skin formation inside paint cans of latex paints
PL1625948T3 (en) 2004-08-10 2015-11-30 Superfos As A packaging, and a mould and a method for making the packaging
WO2008109013A2 (en) * 2007-03-02 2008-09-12 The Sherwin-Williams Company Inhibition of paint-product skin formation
EP2098458A1 (en) 2008-03-03 2009-09-09 Superfos a/s Container comprising an inner lining, a method of applying such a lining to a container and use of a peel able coating as an inner lining in a container
WO2012100099A2 (en) 2011-01-19 2012-07-26 President And Fellows Of Harvard College Slippery surfaces with high pressure stability, optical transparency, and self-healing characteristics
AU2014203757A1 (en) 2013-07-09 2015-01-29 Nci Holdings Pty Ltd Method for treating the interior surfaces of a plastic pail
WO2015039085A1 (en) 2013-09-16 2015-03-19 LiquiGlide Inc. Non-toxic liquid-impregnated surfaces
CN106457182B (en) * 2014-08-28 2020-09-15 日本瑞翁株式会社 Sprayer, spray drying device and method for manufacturing composite particles
JP6651319B2 (en) 2015-09-30 2020-02-19 東洋製罐グループホールディングス株式会社 Packaging container

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EP3858754A1 (en) 2021-08-04

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