EP2106300A2 - Method and device for treating plasstic containers - Google Patents

Method and device for treating plasstic containers

Info

Publication number
EP2106300A2
EP2106300A2 EP07819002A EP07819002A EP2106300A2 EP 2106300 A2 EP2106300 A2 EP 2106300A2 EP 07819002 A EP07819002 A EP 07819002A EP 07819002 A EP07819002 A EP 07819002A EP 2106300 A2 EP2106300 A2 EP 2106300A2
Authority
EP
European Patent Office
Prior art keywords
containers
container
friction
drying
treating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07819002A
Other languages
German (de)
French (fr)
Inventor
Michael Hohenhorst
Martin Backhaus
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.)
KHS GmbH
Original Assignee
KHS GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102006049134A external-priority patent/DE102006049134A1/en
Priority claimed from DE200620015912 external-priority patent/DE202006015912U1/en
Application filed by KHS GmbH filed Critical KHS GmbH
Publication of EP2106300A2 publication Critical patent/EP2106300A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02Processes, 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 macromolecular substances, e.g. rubber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D23/00Details of bottles or jars not otherwise provided for
    • B65D23/08Coverings or external coatings
    • B65D23/0807Coatings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08Processes 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08Processes 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
    • B05D5/083Processes 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 involving the use of fluoropolymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00Indexing scheme relating to blow-moulding
    • B29C2949/07Preforms or parisons characterised by their configuration
    • B29C2949/0715Preforms or parisons characterised by their configuration the preform having one end closed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06Injection blow-moulding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/42388Eliminating electric charge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/4273Auxiliary operations after the blow-moulding operation not otherwise provided for
    • B29C49/42828Coating or painting the article
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/712Containers; Packaging elements or accessories, Packages
    • B29L2031/7158Bottles

Definitions

  • the invention relates to a method and a device for treating containers made of plastic.
  • Plastic containers are used, for example, as beverage packaging.
  • the containers are produced as plastic bottles by blow molding of preforms. This manufacturing process often takes place before filling with the contents in a contiguous system.
  • the preforms supplied as bulk material are introduced into a blow molding machine, heated in a controlled manner and blow-molded at high power in a downstream blowing station.
  • the z. B. are configured with a plurality of rotating blow molds to achieve high production rates.
  • the molded containers are fed to the other parts of the system, for example a rinser or filler.
  • the individual plant components are matched with their production capacities, so that, for example, the blow molding machine can provide enough containers to be able to supply the filling machine continuously with the containers to be filled, even at maximum capacity.
  • Air transport systems are frequently used to transport the empty plastic containers.
  • the plastic containers made of preforms in the described method have in their neck region on a circumferential annular collar, which is always independent of the size of the container in the same place, and in addition, regardless of the type of the respective container always has the same shape.
  • the containers are moved with this collar in a channel in the gill-like or obliquely arranged air nozzles blow sterile air under the collar and so can move the containers with very little friction forward.
  • the entire air transport system may be formed as a closed channel, which has the additional advantage that contamination of the interior of the container is prevented.
  • such transport systems are substantially independent of the container size, since, as stated, even different types of containers regardless of their size in the head area are the same design and thus can be moved in the same transport systems.
  • the air transport systems are very long, depending on the size of the system, in order to be used as a buffer line and the like. They pick up a large number of plastic containers at the same time.
  • the object of the invention is to treat the containers in such a way that they can be transported less susceptible to interference by the interactions of the containers with each other are reduced.
  • the invention achieves this by a method having the features of claim 1 and a device having the features of claim 8.
  • Another advantage of the invention is that the treatment plant can be designed so that the interior of the container is not treated, so that contamination with the treatment medium is prevented, which is particularly useful in the food sector.
  • the containers are externally sprayed with a friction reducing agent.
  • a mixture of a carrier and an active ingredient can be used, for example, by using water as the carrier and, for example, an agent as an effective ingredient for reducing the surface tension or a means for changing the conductivity, a detergent, silicone or even Teflon.
  • the containers are expediently dried, for which purpose the residual heat of the containers, which they still have due to blow molding, is used in an embodiment.
  • the exhaust air from the air transport system can be used if it is deflected in a suitable manner.
  • a drying device for example by infrared radiation or a hot air stream, may also be expedient.
  • the carrier dries off and only the active ingredient remains on the container surface where it reduces the friction of the containers with each other. Any electrostatic charges on the container which are still present due to the blow molding are likewise reduced or completely removed by the treatment, so that an interaction of the containers with one another is thereby likewise prevented.
  • Fig. 1 is a block diagram of a plant with the invention and in
  • Fig. 2 is a schematic side view of a device according to the invention.
  • FIG. 1 A schematic representation of the treatment device according to the invention generally designated 1 is shown in more detail in FIG.
  • Finished preforms 2 are introduced into the system on the input side and first pass through a heating station 3 in which the preforms 2 are preheated to a controlled temperature. Then they run into a blowing station 4, in which they are made by stretch blow molding in the desired container shape, z. B. a bottle for drinks.
  • the molded containers are introduced into the spray station 5 according to the invention and subsequently in the Drying station 6 dried. Then they are by means of an air transport system 7, which also serves as a buffer line, a rinser 8 supplied, in which the containers are cleaned from the inside and possibly sterilized. The sterilized containers are then fed via a further air transport system 9 to a filler 10, in which the containers are filled with the desired contents. Alternatively, other system designs are possible.
  • FIG. 1 A finished blow-molded container 11 made of plastic is transported after leaving the blow molding machine by a spray chamber 12.
  • a plurality of atomizing nozzles 13 are arranged, which finely atomize a treatment agent and thus produce a spray mist.
  • the treatment agent may for example consist of a carrier, such as water, the effective ingredients, for example in the form of detergents, silicones or Teflon attached.
  • a carrier such as water
  • the effective ingredients for example in the form of detergents, silicones or Teflon attached.
  • the spray settles on the surface of the container 11.
  • the carrier evaporates after leaving the spray chamber 12.
  • the container 11 dries off and on the surface remains only the active ingredient in the form of, for example, a thin silicone or Teflon coating back.
  • This layer significantly reduces the friction between the containers.
  • the spraying compensates or removes any existing electrostatic surface charges which may have formed on the surface of the container 11 due to the blow molding process so that interactions between two containers 11 are no longer or only greatly reduced due to electrostatic effects occur.
  • Cooling nozzles 17, which are connected to the air supply of the air transport system, support the drying process by additionally drying the surface by blowing with air.
  • a pump device 14 which pumps the treatment agent from a reservoir 15 to the atomizer nozzles 13 and there provides the pressure necessary to produce the spray.
  • Excess treatment medium which does not precipitate on the surface of the bottles 11, condenses on the walls of the spray chamber 12 or is deposited on this, runs down and is fed via an outlet 16 back to the pumping device 14, so that for example a part of Treatment agent circulates in a closed circuit.
  • an independent drying chamber can still be connected in design, which, in addition to the already described drying mechanisms by irradiation with infrared light or an additional hot air flow, supports the drying of the containers 11 and thus the formation of the film from an effective constituent.
  • the container Before, during or after treatment of the container 11 in the spray chamber 12 according to the invention, the container is then transferred to an air transport system 18, in which the container is transported by nozzle or gill-like projections and correspondingly shaped air flows.
  • the containers 11 can butt against one another in the course of the transport, without them becoming wedged on one another. Both when the containers are in abutment and so transported, as well as when they rotate against each other or collide at different speeds, the containers do not wed or jam together, since by the treatment of the invention the surface friction and / or the electrostatic interactions between them Containers are reduced so much that mutual interaction hardly takes place.
  • the invention is not limited to the above embodiment, but can be modified in many ways without departing from the spirit.
  • the treatment agents used, carrier media or active ingredients are widely modified as long as they are suitable to influence the container surface in a suitable manner, in particular to reduce the friction of the container.
  • the structure of the system ie the application of the medium and the subsequent subsequent drying, can be made in many ways, as long as a sufficient amount of the treatment agent is brought to the relevant points of the container surface.
  • the structure of the plant as a whole can also be varied, in particular in particular with regard to the arrangement of the further treatment stations following the treatment device according to the invention.
  • the transport systems are not limited to air transport.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Abstract

The invention relates to a method and a device for treating plastic containers. The aim of the invention is to treat containers in such a way that they can be transported in a more reliable manner, the interactions of the containers being reduced. To this end, following the blow moulding process, the containers are treated in such a way as to reduce and/or equalise electrostatic surface charges and/or to reduce the surface friction.

Description

Verfahren und Vorrichtung zur Behandlung von Behältern aus Kunststoff Method and device for treating plastic containers
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Behandlung von Behältern aus Kunststoff.The invention relates to a method and a device for treating containers made of plastic.
Kunststoffbehälter kommen beispielsweise als Getränkeverpackungen zum Einsatz. In typischen Anlagen werden die Behälter als Kunststoffflaschen durch Blasformen aus Vorformlingen (Preforms) hergestellt. Dieser Herstellungs- prozess erfolgt häufig vor der Befüllung mit dem Füllgut in einer zusammenhängenden Anlage.Plastic containers are used, for example, as beverage packaging. In typical plants, the containers are produced as plastic bottles by blow molding of preforms. This manufacturing process often takes place before filling with the contents in a contiguous system.
Dazu werden die als Schüttgut angelieferten Preforms in eine Blasmaschine eingebracht, kontrolliert aufgeheizt und in einer nachgeschalteten Blasstation mit hoher Leistung blasgeformt. Hierfür sind verschiedene Maschinen im Einsatz, die z. B. mit einer Mehrzahl von umlaufenden Blasformen ausgestaltet sind, um hohe Produktionsleistungen zu erzielen.For this purpose, the preforms supplied as bulk material are introduced into a blow molding machine, heated in a controlled manner and blow-molded at high power in a downstream blowing station. For this purpose, various machines are in use, the z. B. are configured with a plurality of rotating blow molds to achieve high production rates.
Im Anschluss an das Blasformen werden die ausgeformten Behälter den weiteren Anlagenteilen zugeführt, beispielsweise einem Rinser oder Füller. Die einzelnen Anlagenteile sind mit ihren Produktionskapazitäten aufeinander abgestimmt, so dass beispielsweise die Blasmaschine genügend Behälter zur Verfügung stellen kann, um die Füllmaschine auch bei höchster Kapazität kontinuierlich mit den zu befüllenden Behältern versorgen zu können.Following the blow molding, the molded containers are fed to the other parts of the system, for example a rinser or filler. The individual plant components are matched with their production capacities, so that, for example, the blow molding machine can provide enough containers to be able to supply the filling machine continuously with the containers to be filled, even at maximum capacity.
Trotzdem lassen sich Veränderungen in dem Durchsatz der einzelnen Anlagenteile nie gänzlich vermeiden, beispielsweise durch Störungen oder Schwankungen in der Produktzuführung, was zu einer zeitweisen Reduzierung beispielsweise der Füllgeschwindigkeit führen kann. Um derartige Schwankungen ausgleichen zu können, sind zwischen den einzelnen Anlagenteilen häufig Pufferstrecken vorgesehen, die für einen gewissen Zeitraum eine Überproduktion des vorgeschalteten Anlagenteiles ausgleichen können. So werden Staus vermieden und Störungen in einem Anlagenteil wirken sich nicht unmittelbar auf alle Anlagenteile aus, so dass Notabschaltungen vermieden und stattdessen langsame und angepasste Leistungserhöhungen bzw. -Verminderungen in allen Maschinenteilen erfolgen können.Nevertheless, changes in the throughput of the individual parts of the system can never be completely avoided, for example due to disturbances or fluctuations in the product feed, which can lead to a temporary reduction of, for example, the filling speed. In order to compensate for such fluctuations, buffer sections are often provided between the individual parts of the system, which can compensate for overproduction of the upstream part of the system for a certain period of time. This avoids traffic jams and disturbances in a part of the system do not have an immediate effect all plant components so that emergency shutdowns can be avoided and instead slow and adapted power increases or decreases can be made in all machine parts.
Zum Transport der leeren Kunststoffbehälter kommen häufig Lufttransportsysteme zum Einsatz. Die im beschriebenen Verfahren aus Vorformlingen hergestellten Kunststoffbehälter weisen in ihrem Halsbereich einen umlaufenden ringförmigen Kragen auf, der sich unabhängig von der Größe des Behälters immer an derselben Stelle befindet, und zusätzlich unabhängig von der Art des jeweiligen Behälters auch immer die selbe Form aufweist. In den Lufttransportsystemen werden die Behälter mit diesem Kragen in einen Kanal bewegt, in dem kiemenartig ausgebildete oder schräg angeordnete Luftdüsen sterile Druckluft unter den Kragen blasen und so die Behälter mit sehr geringer Reibung vorwärts bewegen können. Das gesamte Lufttransportsystem kann als geschlossener Kanal ausgebildet sein, was den zusätzlichen Vorteil hat, dass eine Verschmutzung des Inneren des Behälters verhindert wird. Zudem sind derartige Transportsysteme im Wesentlichen unabhängig von der Behältergröße, da, wie ausgeführt, auch unterschiedliche Behältertypen unabhängig von ihrer Größe im Kopfbereich gleich ausgebildet sind und somit in denselben Transportsystemen bewegt werden können.Air transport systems are frequently used to transport the empty plastic containers. The plastic containers made of preforms in the described method have in their neck region on a circumferential annular collar, which is always independent of the size of the container in the same place, and in addition, regardless of the type of the respective container always has the same shape. In the air transport systems, the containers are moved with this collar in a channel in the gill-like or obliquely arranged air nozzles blow sterile air under the collar and so can move the containers with very little friction forward. The entire air transport system may be formed as a closed channel, which has the additional advantage that contamination of the interior of the container is prevented. In addition, such transport systems are substantially independent of the container size, since, as stated, even different types of containers regardless of their size in the head area are the same design and thus can be moved in the same transport systems.
Die Lufttransportsysteme sind je nach Anlagengröße sehr lang, um als Pufferstrecke und dgl. eingesetzt werden zu können. Dabei nehmen sie eine Vielzahl von Kunststoffbehältern gleichzeitig auf.The air transport systems are very long, depending on the size of the system, in order to be used as a buffer line and the like. They pick up a large number of plastic containers at the same time.
Hier tritt das Problem auf, dass die Behälter aufgrund der geringen Reibung während des Transportes sich nicht immer mit konstanter Geschwindigkeit vorwärts bewegen, sondern die Behälter Schwankungen unterworfen sind. Zudem geraten die Behälter in unkontrollierte Drehbewegungen. Sobald zwei Behälter im Transportsystem aneinander stoßen, können deshalb unerwünschte Effekte auftreten. Da die Führung ausschließlich im Kopfbereich erfolgt und die Behälter im unteren Teil frei hängen, können sie beim Zusammenstoß von Behältern miteinander seitlich weggedrückt werden und sich so gegeneinander verkeilen. Auch beim Aufeinandertreffen von relativ zueinander in Drehung befindlichen Behältern können derartige Effekte auftreten. Durch die hohen Transportgeschwindigkeiten und Kapazitäten der Anlage können so Störungen auftreten, die äußerst negative Auswirkungen auf die Leistung einer Gesamtanlage haben.Here, the problem arises that, due to the low friction during transport, the containers do not always move forward at a constant speed, but the containers are subject to variations. In addition, the containers get into uncontrolled rotational movements. As soon as two containers collide in the transport system, unwanted effects can therefore occur. Since the guide takes place exclusively in the head area and hang freely in the lower part of the container, they can be pushed away when colliding containers together laterally and thus wedged against each other. Even when meeting relatively close together containers such effects can occur. Due to the high transport speeds As well as the capacity of the plant, faults can occur which have extremely negative effects on the performance of a complete system.
Es ist bekannt, Preforms bereits bei deren Herstellungsprozess mit einer Silikonbeschichtung zu versehen. Diese haben aber den Nachteil, dass sie für die Verwendung im Lebensmittelbereich nicht zugelassen sind, da nicht sichergestellt werden kann, dass das Innere der hergestellten Flaschen frei von Verunreinigungen mit Silikon ist. Deshalb sind derartige Preforms für Anlagen des beschriebenen Typs und zur Verwendung .B. im Getränkebereich nicht geeignet.It is known to provide preforms already with their production process with a silicone coating. However, these have the disadvantage that they are not approved for use in the food sector, since it can not be ensured that the interior of the bottles produced is free from contamination with silicone. Therefore, such preforms are for equipment of the type described and for use .B. not suitable in the beverage sector.
Aufgabe der Erfindung ist es, die Behälter auf eine Art und Weise zu behandeln, dass sie sich weniger störanfällig transportieren lassen, indem die Wechselwirkungen der Behälter untereinander vermindert werden.The object of the invention is to treat the containers in such a way that they can be transported less susceptible to interference by the interactions of the containers with each other are reduced.
Die Erfindung erreicht dies durch ein Verfahren mit den Merkmalen des Patentanspruches 1 sowie eine Vorrichtung mit den Merkmalen des Patentanspruches 8.The invention achieves this by a method having the features of claim 1 and a device having the features of claim 8.
Mittels einer derartigen Behandlung wird der gegenseitige Einfluss der Behälter aufeinander beim Transport erheblich reduziert. So wird vermieden, dass sie sich bei Kontakt verkanten oder miteinander verkeilen. Auf diese Weise werden Störungen beim Transport erheblich vermindert oder ganz vermieden. Das Verfahren ist insbesondere bei der Verwendung von Lufttransportsystemen nützlich, kann aber auch bei anderen herkömmlichen Transporteinrichtungen vorteilhaft eingesetzt werden.By means of such a treatment, the mutual influence of the containers on each other during transportation is considerably reduced. This prevents them from tilting or wedging on contact. In this way disturbances during transport are considerably reduced or completely avoided. The method is particularly useful in the use of air transport systems, but may be used to advantage in other conventional transport devices.
Ein weiterer Vorteil der Erfindung besteht darin, dass die Behandlungsanlage so ausgebildet sein kann, dass das Innere des Behälters nicht mitbehandelt wird, so dass eine Kontamination mit dem Behandlungsmedium verhindert wird, was insbesondere bei der Verwendung im Lebensmittelbereich nützlich ist.Another advantage of the invention is that the treatment plant can be designed so that the interior of the container is not treated, so that contamination with the treatment medium is prevented, which is particularly useful in the food sector.
Vorteilhaft werden die Behälter außen mit einem Mittel zur Reibungsreduzierung besprüht. Dabei kann eine Mischung aus einem Trägermittel und einem wirksamen Bestandteil verwendet werden, beispielsweise indem als Trägermittel Wasser verwendet wird und als wirksamer Bestandteil beispielsweise ein Mittel zur Verminderung der Oberflächenspannung oder ein Mittel zur Veränderung der Leitfähigkeit, ein Spülmittel, Silikon oder aber auch Teflon.Advantageously, the containers are externally sprayed with a friction reducing agent. In this case, a mixture of a carrier and an active ingredient can be used, for example, by using water as the carrier and, for example, an agent as an effective ingredient for reducing the surface tension or a means for changing the conductivity, a detergent, silicone or even Teflon.
Im Anschluss werden die Behälter zweckmäßigerweise getrocknet, wozu in Ausgestaltung die Restwärme der Behälter, die sie durch das Blasformen noch haben, verwendet wird. Alternativ oder zusätzlich kann die Abluft aus dem Lufttransportsystem genutzt werden, wenn diese in geeigneter Weise umgelenkt wird. Ggf. kann auch die Vorsehung einer Trocknungseinrichtung, beispielsweise durch Infrarotbestrahlung oder einem heißen Luftstrom, zweckmäßig sein.Following this, the containers are expediently dried, for which purpose the residual heat of the containers, which they still have due to blow molding, is used in an embodiment. Alternatively or additionally, the exhaust air from the air transport system can be used if it is deflected in a suitable manner. Possibly. The provision of a drying device, for example by infrared radiation or a hot air stream, may also be expedient.
Auf diese Weise trocknet das Trägermittel ab und lediglich der wirksame Bestandteil bleibt auf der Behälteroberfläche zurück, wo er die Reibung der Behälter untereinander reduziert. Etwaige, durch das Blasformen noch vorhandene elektrostatische Ladungen auf dem Behälter werden durch die Behandlung ebenfalls reduziert oder ganz entfernt, so dass eine Wechselwirkung der Behälter miteinander hierdurch ebenfalls unterbunden wird.In this way, the carrier dries off and only the active ingredient remains on the container surface where it reduces the friction of the containers with each other. Any electrostatic charges on the container which are still present due to the blow molding are likewise reduced or completely removed by the treatment, so that an interaction of the containers with one another is thereby likewise prevented.
Die Erfindung ist anhand einer Zeichnung näher dargestellt. Diese zeigt inThe invention is illustrated in more detail with reference to a drawing. This shows in
Fig. 1 ein Blockdiagramm einer Anlage mit der Erfindung sowie inFig. 1 is a block diagram of a plant with the invention and in
Fig. 2 eine schematische Seitenansicht einer erfindungsgemäßen Vorrichtung.Fig. 2 is a schematic side view of a device according to the invention.
Eine schematische Darstellung der allgemein mit 1 bezeichneten erfindungsgemäßen Behandlungsvorrichtung ist in Fig. 1 näher dargestellt. Fertige Vor- formlinge (Preforms) 2 werden eingangsseitig in die Anlage eingebracht und durchlaufen zuerst eine Heizstation 3, in der die Vorformlinge 2 auf eine kontrollierte Temperatur vorgeheizt werden. Daraufhin laufen sie in eine Blasstation 4, in der sie durch Streckblasen in Blasformen in die gewünschte Behälterform gebracht werden, z. B. die einer Flasche für Getränke.A schematic representation of the treatment device according to the invention generally designated 1 is shown in more detail in FIG. Finished preforms 2 are introduced into the system on the input side and first pass through a heating station 3 in which the preforms 2 are preheated to a controlled temperature. Then they run into a blowing station 4, in which they are made by stretch blow molding in the desired container shape, z. B. a bottle for drinks.
Unmittelbar im Anschluss werden die ausgeformten Behälter in die erfindungsgemäße Sprühstation 5 eingebracht und im Anschluss in der Trockenstation 6 abgetrocknet. Daraufhin werden sie mittels eines Lufttransportsystems 7, das ebenfalls als Pufferstrecke dient, einem Rinser 8 zugeführt, in dem die Behälter von innen gereinigt und ggf. sterilisiert werden. Die sterilisierten Behälter werden dann über ein weiteres Lufttransportsystem 9 einem Füller 10 zugeführt, in dem die Behälter mit dem gewünschten Füllgut befüllt werden. Alternativ sind auch andere Anlagengestaltungen möglich.Immediately following the molded containers are introduced into the spray station 5 according to the invention and subsequently in the Drying station 6 dried. Then they are by means of an air transport system 7, which also serves as a buffer line, a rinser 8 supplied, in which the containers are cleaned from the inside and possibly sterilized. The sterilized containers are then fed via a further air transport system 9 to a filler 10, in which the containers are filled with the desired contents. Alternatively, other system designs are possible.
Der Aufbau der erfindungsgemäßen Behandlungsvorrichtung 1 ist in Fig. 2 näher dargestellt. Ein fertig blasgeformter Behälter 11 aus Kunststoff wird nach dem Verlassen der Blasmaschine durch eine Sprühkammer 12 transportiert. Darin sind eine Mehrzahl von Zerstäuberdüsen 13 angeordnet, die ein Behandlungsmittel fein zerstäuben und so einen Sprühnebel erzeugen.The structure of the treatment device 1 according to the invention is shown in more detail in FIG. A finished blow-molded container 11 made of plastic is transported after leaving the blow molding machine by a spray chamber 12. In it, a plurality of atomizing nozzles 13 are arranged, which finely atomize a treatment agent and thus produce a spray mist.
Das Behandlungsmittel kann beispielsweise aus einem Trägermittel, wie Wasser bestehen, dem wirksame Bestandteile, beispielsweise in Form von Spülmitteln, Silikonen oder Teflon, beigefügt sind. Der Sprühnebel schlägt sich auf der Oberfläche des Behälters 11 nieder.The treatment agent may for example consist of a carrier, such as water, the effective ingredients, for example in the form of detergents, silicones or Teflon attached. The spray settles on the surface of the container 11.
Durch die Restwärme des Behälters 11 , die er aufgrund des unmittelbar vorangegangenen Blasformvorganges noch hat, verdampft das Trägermittel nach dem Verlassen der Sprühkammer 12. So trocknet der Behälter 11 ab und auf der Oberfläche bleibt nur noch der wirksame Bestandteil in Form beispielsweise einer dünnen Silikon- oder Teflonschicht zurück. Diese Schicht vermindert die Reibung der Behälter untereinander erheblich. Zudem findet durch das Besprühen ein Ausgleich bzw. ein Abbau eventuell vorhandener elektrostatischer Oberflächenladungen statt, die sich aufgrund des Blasformvorganges auf der Oberfläche des Behälters 11 gebildet haben können, so dass Wechselwirkungen zwischen zwei Behältern 11 aufgrund elektrostatischer Effekte ebenfalls nicht mehr oder nur noch stark vermindert auftreten. Kühldüsen 17, die mit der Luftversorgung des Lufttransportsystems verbunden sind, unterstützen den Abtrocknungsvorgang, indem die Oberfläche durch Anblasen mit Luft zusätzlich getrocknet wird.Due to the residual heat of the container 11, which he still has due to the immediately preceding blow molding process, the carrier evaporates after leaving the spray chamber 12. Thus, the container 11 dries off and on the surface remains only the active ingredient in the form of, for example, a thin silicone or Teflon coating back. This layer significantly reduces the friction between the containers. In addition, the spraying compensates or removes any existing electrostatic surface charges which may have formed on the surface of the container 11 due to the blow molding process so that interactions between two containers 11 are no longer or only greatly reduced due to electrostatic effects occur. Cooling nozzles 17, which are connected to the air supply of the air transport system, support the drying process by additionally drying the surface by blowing with air.
Zur Erzeugung des Sprühnebels ist eine Pumpeinrichtung 14 vorgesehen, die das Behandlungsmittel aus einem Vorratsbehälter 15 an die Zerstäuberdüsen 13 pumpt und dort für den zur Erzeugung des Sprühnebels nötigen Druck sorgt. Überschüssiges Behandlungsmedium, das sich nicht auf der Oberfläche der Flaschen 11 niederschlägt, kondensiert an den Wänden der Sprühkammer 12 oder schlägt sich an diesen nieder, läuft nach unten ab und wird über einen Abfluss 16 wieder der Pumpeinrichtung 14 zugeführt, so dass beispielsweise ein Teil des Behandlungsmittels in einem geschlossenen Kreislauf umläuft.To generate the spray, a pump device 14 is provided, which pumps the treatment agent from a reservoir 15 to the atomizer nozzles 13 and there provides the pressure necessary to produce the spray. Excess treatment medium, which does not precipitate on the surface of the bottles 11, condenses on the walls of the spray chamber 12 or is deposited on this, runs down and is fed via an outlet 16 back to the pumping device 14, so that for example a part of Treatment agent circulates in a closed circuit.
Im Anschluss an die Sprühkammer 12 kann sich in Ausgestaltung noch eine eigenständige Trocknungskammer anschließen, die zusätzlich zu den bereits beschriebenen Trocknungsmechanismen durch Bestrahlung mit Infrarotlicht oder einem zusätzlichen heißen Luftstrom die Abtrocknung der Behälter 11 und somit die Bildung des Films aus wirksamem Bestandteil unterstützt.Following the spray chamber 12, an independent drying chamber can still be connected in design, which, in addition to the already described drying mechanisms by irradiation with infrared light or an additional hot air flow, supports the drying of the containers 11 and thus the formation of the film from an effective constituent.
Vor, während oder nach Behandlung des Behälters 11 in der erfindungsgemäßen Sprühkammer 12 wird der Behälter dann einem Lufttransportsystem 18 übergeben, in dem der Behälter durch düsen- oder kiemenartige Vorsprünge und entsprechend gestaltete Luftströmungen transportiert wird. Durch das erfindungsgemäße Verfahren können im Laufe des Transports die Behälter 11 aneinander stoßen, ohne dass sie sich gegenseitig verkeilen. Sowohl wenn sich die Behälter auf Stoß befinden und so transportiert werden, als auch wenn sie sich gegeneinander drehen oder mit unterschiedlichen Geschwindigkeiten aneinanderprallen, verkeilen oder verklemmen sich die Behälter nicht miteinander, da durch die erfindungsgemäße Behandlung die Oberflächenreibung und/oder die elektrostatischen Wechselwirkungen zwischen den Behältern so weit reduziert sind, dass eine gegenseitige Einwirkung kaum noch stattfindet.Before, during or after treatment of the container 11 in the spray chamber 12 according to the invention, the container is then transferred to an air transport system 18, in which the container is transported by nozzle or gill-like projections and correspondingly shaped air flows. By means of the method according to the invention, the containers 11 can butt against one another in the course of the transport, without them becoming wedged on one another. Both when the containers are in abutment and so transported, as well as when they rotate against each other or collide at different speeds, the containers do not wed or jam together, since by the treatment of the invention the surface friction and / or the electrostatic interactions between them Containers are reduced so much that mutual interaction hardly takes place.
Die Erfindung ist nicht auf das vorstehende Ausführungsbeispiel beschränkt, sondern kann in vielfältiger Hinsicht abgewandelt werden, ohne den Grundgedanken zu verlassen. So sind die verwendeten Behandlungsmittel, Trägermedien oder wirksamen Bestandteile in weiten Bereichen abwandelbar, solange sie geeignet sind, die Behälteroberfläche in geeigneter weise, insbesondere zur Reduzierung der Reibung der Behälter zu beeinflussen. Auch der Aufbau der Anlage, d.h. das Aufbringen des Mediums und die ggf. anschließende Trocknung, kann auf vielfältige Weise vorgenommen werden, solange eine ausreichende Menge des Behandlungsmittels an die relevanten Stellen der Behälteroberfläche gebracht wird. Auch der Aufbau der Anlage insgesamt kann variiert werden, insbe- sondere was die Anordnung der weiteren Behandlungsstationen im Anschluss an die erfindungsgemäße Behandlungsvorrichtung betrifft. Zudem ist es auch möglich, die Behandlungsvorrichtung selbst an anderen Stellen in der Anlage zu platzieren oder mit anderen Anlagenteilen als der Blasformung zu verbinden. Die Transportsysteme sind nicht auf den Lufttransport beschränkt. The invention is not limited to the above embodiment, but can be modified in many ways without departing from the spirit. Thus, the treatment agents used, carrier media or active ingredients are widely modified as long as they are suitable to influence the container surface in a suitable manner, in particular to reduce the friction of the container. The structure of the system, ie the application of the medium and the subsequent subsequent drying, can be made in many ways, as long as a sufficient amount of the treatment agent is brought to the relevant points of the container surface. The structure of the plant as a whole can also be varied, in particular in particular with regard to the arrangement of the further treatment stations following the treatment device according to the invention. In addition, it is also possible to place the treatment device itself at other locations in the system or to connect it to equipment other than blow molding. The transport systems are not limited to air transport.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Behandlungsvorrichtung1 treatment device
2 Vorformlinge2 preforms
3 Heizstation3 heating station
4 Blasstation4 blowing station
5 Sprühstation5 spray station
6 Trockenstation6 drying station
7 Lufttransportsystem7 air transport system
8 Rinser8 rinsers
9 Lufttransportsystem9 air transport system
10 Füller10 fillers
11 Behälter11 containers
12 Sprühkammer12 spray chamber
13 Zerstäuberdüsen13 atomizer nozzles
14 Pumpeinrichtung14 pumping device
15 Vorratsbehälter15 reservoir
16 Abfluss16 outflow
17 Kühldüsen17 cooling nozzles
18 Lufttransportsystem 18 air transport system

Claims

Patentansprüche: claims:
1. Verfahren zur Behandlung von Behältern aus Kunststoff, dadurch gekennzeichnet, dass die Behälter (11) im Anschluss an ihre Formung zum Abbau und/oder Ausgleich von elektrostatischen Oberflächenladungen und/oder zur Reduzierung der Oberflächenreibung äußerlich behandelt werden.1. A method for treating containers made of plastic, characterized in that the container (11) are treated externally following their formation for the degradation and / or compensation of electrostatic surface charges and / or to reduce the surface friction.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Behälter (11) mit einem Mittel zur Reibungsreduzierung besprüht werden.2. The method according to claim 1, characterized in that the containers (11) are sprayed with a means for reducing friction.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass als Mittel eine Mischung aus einem Trägermittel und einem wirksamen Bestandteil verwendet wird.3. The method according to claim 2, characterized in that a mixture of a carrier agent and an active ingredient is used as the means.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass als Trägermittel Wasser verwendet wird.4. The method according to claim 3, characterized in that water is used as a carrier.
5. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass als wirksamer Bestandteil Stoffe aus den Gruppen der Spülmittel, Silikone, Polytetrafluorethylene (Teflon) verwendet werden.5. The method according to claim 3 or 4, characterized in that substances from the groups of rinsing agents, silicones, polytetrafluoroethylenes (Teflon) are used as an effective ingredient.
6. Verfahren nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, dass die Behälter (11) nach dem Besprühen getrocknet werden.6. The method according to claim 1 or one of the following, characterized in that the containers (11) are dried after spraying.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Trocknung durch die Restwärme der Behälter (11) durch das Blasformen und/oder durch Abluft aus dem Lufttransport und/oder durch eine Trocknungsvorrichtung bewirkt wird.7. The method according to claim 6, characterized in that the drying is effected by the residual heat of the container (11) by the blow molding and / or by exhaust air from the air transport and / or by a drying device.
8. Vorrichtung zur Behandlung von Behältern aus Kunststoff nach Anspruch 1 oder einem der folgenden. 8. Apparatus for treating containers made of plastic according to claim 1 or one of the following.
9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass eine Mehrzahl von Zerstäuberdüsen (13) zur Aufbringung eines Mittels zur Reibungsreduzierung auf die Oberfläche der Behälter (11) vorgesehen ist.Apparatus according to claim 8, characterized in that a plurality of atomizing nozzles (13) are provided for applying a friction reducing agent to the surface of the containers (11).
10. Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass eine Pumpeinrichtung (14) zur Versorgung der Zerstäuberdüsen (13) mit dem Mittel zur Reibungsreduzierung vorgesehen ist.10. Apparatus according to claim 8 or 9, characterized in that a pumping device (14) for supplying the atomizer nozzles (13) is provided with the means for reducing friction.
11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass eine Einrichtung zur Aufnahme des überschüssigen Mittels zur Reibungsreduzierung vorgesehen ist, die mit der Pumpeinrichtung (14) verbunden ist. 11. The device according to claim 10, characterized in that a device for receiving the excess means for friction reduction is provided, which is connected to the pumping device (14).
EP07819002A 2006-10-18 2007-10-15 Method and device for treating plasstic containers Withdrawn EP2106300A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006049134A DE102006049134A1 (en) 2006-10-18 2006-10-18 Treatment method for degrading plastic containers drizzles an agent/substance over the containers using sprayer nozzles to reduce friction
DE200620015912 DE202006015912U1 (en) 2006-10-18 2006-10-18 Apparatus for treating plastics containers, e.g. bottles for drinks, by modulating electrostatic charges and/or reducing friction on surface, to reduce transport disrupting mutual interactions of bottles
PCT/EP2007/008931 WO2008046574A2 (en) 2006-10-18 2007-10-15 Method and device for treating plasstic containers

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US (1) US20100095639A1 (en)
EP (1) EP2106300A2 (en)
MX (1) MX2009003671A (en)
RU (1) RU2401702C1 (en)
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DE102008048812A1 (en) * 2008-09-24 2010-04-01 Khs Ag Method and device for the combined production and filling of plastic containers
JP5336949B2 (en) * 2009-06-30 2013-11-06 サントリーホールディングス株式会社 Resin container charge removal method, resin container sterilization filling method, resin container filling capping method, resin container charge removal device and resin container sterilization filling system
DE102009041215A1 (en) * 2009-09-11 2011-03-24 Krones Ag Method and apparatus for stretch blow molding or blow molding and filling sterile containers
DE102009052289A1 (en) * 2009-11-09 2011-05-12 Krones Ag Apparatus and method for labeling filled containers
DE102012108329A1 (en) * 2012-09-07 2014-05-28 Krones Ag Apparatus and method for producing beverage containers
WO2015159261A1 (en) * 2014-04-17 2015-10-22 Elli Vittorio Process for applying a surface agent on a component made of a polymeric or elastomeric, optionally reinforced or composite material
JP6663137B1 (en) * 2018-10-04 2020-03-11 大日本印刷株式会社 Container outer surface sterilizer and nozzle for container outer surface sterilization

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EP0253026A1 (en) * 1986-07-18 1988-01-20 FECO Engineered Systems, Inc. Method and apparatus for coating and curing containers
CA2573140A1 (en) * 2004-07-09 2006-01-26 Advanced Plastics Technologies Luxembourg S.A. Coating process and apparatus for forming coated articles

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MX2009003671A (en) 2009-04-23
US20100095639A1 (en) 2010-04-22
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WO2008046574A2 (en) 2008-04-24
RU2401702C1 (en) 2010-10-20

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