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EP1497189A1 - Plastic bottle - Google Patents

Plastic bottle

Info

Publication number
EP1497189A1
EP1497189A1 EP03747090A EP03747090A EP1497189A1 EP 1497189 A1 EP1497189 A1 EP 1497189A1 EP 03747090 A EP03747090 A EP 03747090A EP 03747090 A EP03747090 A EP 03747090A EP 1497189 A1 EP1497189 A1 EP 1497189A1
Authority
EP
European Patent Office
Prior art keywords
bottle
base
feet
plastic
curvature
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.)
Granted
Application number
EP03747090A
Other languages
German (de)
French (fr)
Other versions
EP1497189B1 (en
Inventor
Christian Dornbach
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.)
Alpla Werke Alwin Lehner GmbH and Co KG
Original Assignee
Alpla Werke Alwin Lehner GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alpla Werke Alwin Lehner GmbH and Co KG filed Critical Alpla Werke Alwin Lehner GmbH and Co KG
Publication of EP1497189A1 publication Critical patent/EP1497189A1/en
Application granted granted Critical
Publication of EP1497189B1 publication Critical patent/EP1497189B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/0261—Bottom construction
    • B65D1/0284—Bottom construction having a discontinuous contact surface, e.g. discrete feet

Definitions

  • the invention relates to a plastic bottle according to the preamble of patent claim 1.
  • the containers made of tinplate or colored sheet, glass or ceramic, which are common in the past, are increasingly being replaced by containers made of plastic.
  • plastic containers in particular plastic bottles, are used.
  • the low weight and the lower costs play a not inconsiderable role in this substitution.
  • the use of recyclable plastic materials and the overall lower overall energy balance in their manufacture also help to promote the acceptance of plastic containers, in particular plastic bottles, by the consumer.
  • Plastic bottles have a bottle body that is equipped with a bottle neck with a pouring opening.
  • a bottom part adjoins the bottle body, which usually has a regular, preferably circular or oval cross-sectional area.
  • the bottom part comprises a bottle bottom, which closes the bottle body and preferably a number of feet, which are separated from one another by indentations in the bottle wall.
  • plastic bottles with feet generally have greater tipping stability.
  • the mostly flat bottle bottom can bulge due to the weight of the bottle holder. This reduces the radius of the support area and the bottle can fall over more easily.
  • the formation of feet in the base part strengthens the base part to a certain extent and ensures a constant radius of the support area.
  • the bottles known from the prior art usually have a flat bottle bottom, in which there is a risk that it bulges outwards, in particular if the internal pressure is increased.
  • the feet are separated from each other by relatively long axial indentations of the bottle wall, which extend to the bottom of the bottle. From the support area of the feet, approximately trapezoidal wall parts run obliquely to the bottle bottom, which is axially set back with respect to the support area.
  • the size of the indentations is necessary in order to give the bottle base the necessary rigidity so that it cannot bulge out due to the weight and the internal pressure of the bottle contents.
  • the indentations take up a relatively large amount of space axially and reduce the area available for labeling. This can lead to difficulties, particularly in the case of plastic bottles, the height of which is defined by standards.
  • the high pillars often give consumers little confidence in the stability of the bottle.
  • a plastic bottle is to be created which has a sufficiently high stability, in particular tilting stability.
  • the space available for labeling should be optimized; In particular, even with less high bottles, for example 0.33 liter bottles with a standardized height, a sufficiently large area should be provided for the application of a label.
  • the plastic bottle should have an appealing exterior and inspire confidence in its stability.
  • the solution to these problems consists in a plastic bottle, which has the features listed in the characterizing section of claim 1. Further developments and / or advantageous embodiment variants of the invention are the subject of the dependent claims.
  • the invention proposes a plastic bottle with a bottle body and an adjoining base part, which comprises a bottle base that closes the bottle and feet that are separated from one another by indentations in the bottle wall, in which the bottle base has a curvature directed into the interior of the bottle and the axial extension of the The indentations separating the base are substantially equal to or smaller than the axial apex height of the curvature of the bottle base.
  • the inward curvature of the bottle base gives it sufficient rigidity to withstand the weight of the bottle content and the internal pressure, for example of drinks containing C0 2 , sufficiently.
  • the greater rigidity of the bottle base with a comparable wall thickness also makes it possible to make the indentations between the feet less pronounced. It proves to be an appropriate compromise between additional stiffening and the space requirement if the axial extent of the indentations in the bottle wall is equal to or less than the axial apex height of the curvature of the bottle bottom.
  • the indentations take up significantly less space than in the case of the plastic bottles of the prior art. This means that a larger, continuous surface is available for labeling the bottle.
  • the smaller indentations lead to a more favorable distribution of the pressure load due to the weight of the bottle contents, in particular in the support area of the feet, which has an advantageous effect on the stability of the plastic bottle.
  • the curvature of the bottle base is essentially dome-shaped. It has a radius of curvature which is approximately half the radius to approximately twice the contact area of the feet.
  • the plastic bottle can have any desired cross section.
  • plastic bottles, the base part of which has a regular, preferably circular or also oval cross section, are preferred. As a rule, these have better stability and are usually also cheaper to manufacture.
  • the base part has at least five feet, which are each separated from one another by indentations.
  • the indentations increase the strength of the base part and increase the area on which the weight of the bottle contents acts.
  • the bottle base is provided with reinforcing ribs.
  • the reinforcing ribs further increase the rigidity of the bottle base, which is curved inwards.
  • the bottle base can be designed with a smaller wall thickness. This has advantages with regard to the weight of the plastic bottle and, because of the reduced material requirement, also has an advantageous effect on the production costs.
  • the reinforcing ribs are preferably provided in the area of the feet. Each stand has at least one reinforcing rib which extends from the support area of the stand essentially radially in the direction of the apex of the curvature of the bottle base. Since the reinforcing ribs preferably protrude from the outer wall of the bottle base, no filling volume is lost through the ribs.
  • the plastic bottle according to the invention is suitable for production with all common manufacturing methods.
  • a mass-technical manufacturing process that is particularly advantageous for reasons of cost and because the bottle parameters are easy to control is the injection stretch blow molding process. Further advantages and features of the invention result from the following description of exemplary embodiments of the drafting system.
  • FIG. 1 shows a side view of a plastic bottle according to the invention
  • Fig. 3 is a view of the bottom part of an embodiment of the invention.
  • FIG. 4 shows a sectional view according to section line IV-IN in FIG. 3.
  • FIGS. 1 and 2 show a bottle which has been soaked according to the invention in a general view (FIG. 1) and in a detailed view (FIG. 2).
  • the bottle is provided overall with the reference number 1 in FIG. 1.
  • It consists of a thermoplastic and can preferably be produced in a stretch blow molding process, in particular in the injection stretch blow molding process ISBM.
  • Suitable plastics are all thermoplastic materials customary for the known production processes, for example polyethylene terephthalate (PET).
  • the plastic bottle 1 has a bottle body 2, which is equipped with a bottle neck 3 with a pouring opening 4.
  • An external thread 5 is provided on the bottle neck 3, for example, which allows the bottle 1 to be closed with a screw cap.
  • the floor box 6 comprises a bottle bottom 7 which closes the bottle body 2 and a number of feet 8 which are formed by indentations 9 in the bottle. are separated from each other.
  • the plastic bottle 1 corresponds to the bottles of this type known from the prior art.
  • the bottle base 7 is arched into the interior of the bottle in the plastic bottle designed according to the invention. This can be seen in particular from the sectional illustration in FIG. 4.
  • the curvature of the bottle base 7 is essentially dome-shaped.
  • the curvature has a radius of curvature r, which can have approximately half to approximately twice the radius s of the contact area of the feet 8.
  • the radius of curvature r of the curvature is approximately 1.2 times larger than the radius s of the contact area.
  • the radius of the support area relates to the line of contact of the feet 8 with the subsurface that is furthest from the bottle axis.
  • the indentations 9 in the bottle wall have an axial length 1 that is equal to or less than the apex height h of the curvature of the bottle bottom 7.
  • the bottom door 6 of the plastic bottle has six feet 8, which are separated from one another by as many indentations 9. As is known, three feet 8 would already be sufficient to enable the bottle to be opened. For reasons of stability, it has been proven by von NorteÜ if at least five feet 8 are provided.
  • Each stand 8 has a reinforcement rib 10 which extends from the support area of the stand 8 essentially radially in the direction of the apex of the curvature of the bottle base 7.
  • the reinforcement ribs 10 additionally increase the rigidity of the inwardly curved bottle base 7.
  • the reinforcing ribs 10 protrude beyond the outside of the flat bottom 7.
  • the indentations 9 have an opening width in the contact area of the feet 8, which is, for example, the same or smaller than the width of the feet 8 in this area.
  • the indentations 9 of the illustrated embodiment have an extension t measured from the contact area of the feet 8, which is approximately one third of the extent of the bottle base 7 in the radial direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Laminated Bodies (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Steroid Compounds (AREA)

Abstract

The invention relates to a plastic bottle comprising a bottle body and an adjoining base section (6), consisting of a bottle base (7) that seals the bottle and stabilising feet (8) that are separated from one another by indentations (9) in the bottle wall. According to the invention, the bottle base (7) curves inwards towards the bottle interior and the axial extension (l) of the indentations (9) that separate the stabilising feet (8) is substantially equal to or less than the axial apex (h) of the curve of the bottle base (7).

Description

Kunststoffflasche Plastic bottle

Die Erfindung betrifft eine Kunststoffflasche ge äss dem Oberbegriff des Patentan- spruchs 1.The invention relates to a plastic bottle according to the preamble of patent claim 1.

Die in der Nergangenheit üblichen Behältnisse aus Weiss- oder Buntblech, aus Glas oder auch aus Keramik werden in zunehmendem Masse von Behältnissen aus Kunststoff abgelöst. Insbesondere für die Verpackung fluider Substanzen, beispielsweise von Geträn- ken, Öl, Reinigungsutensilien, Kosmetika usw., kommen hauptsächlich Kunststoffbehältnisse, insbesondere Kunststoffflaschen zum Einsatz. Das geringe Gewicht und die geringeren Kosten spielen eine nicht unerhebliche Rolle bei dieser Substitution. Die Verwendung rezyklierbarer Kunststoffmaterialien und die insgesamt günstigere Gesamtenergiebilanz bei ihrer Herstellung tragen auch dazu bei, die Akzeptanz von Kunststoffbehältnis- sen, insbesondere von Kunststoffflaschen, beim Konsumenten zu fördern.The containers made of tinplate or colored sheet, glass or ceramic, which are common in the past, are increasingly being replaced by containers made of plastic. In particular for the packaging of fluid substances, for example beverages, oil, cleaning utensils, cosmetics, etc., mainly plastic containers, in particular plastic bottles, are used. The low weight and the lower costs play a not inconsiderable role in this substitution. The use of recyclable plastic materials and the overall lower overall energy balance in their manufacture also help to promote the acceptance of plastic containers, in particular plastic bottles, by the consumer.

Kunststoffflaschen besitzen einen Flaschenkörper, der mit einem Flaschenhals mit einer Ausgiessöffnung ausgestattet ist. An den Flaschenkörper, der meist eine regelmässige, vorzugsweise kreisförmige oder auch ovale Querschnittsfläche aufweist, schliesst ein Bo- denteil an. Der Bodenteil umfasst einen Flaschenboden, der den Flaschenkörper ab- schliesst und vorzugsweise eine Anzahl von Standfüssen, die durch Einbuchtungen in der Flaschenwandung voneinander getrennt sind. Kunststoffflaschen mit Standfüssen weisen gegenüber Flaschen, deren Bodenteil nur den Flaschenboden umfasst im allgemeinen eine grössere Kippstabilität auf. Der meist flach ausgebildete Flaschenboden kann sich durch das Gewicht des Flascheni halts ausbeulen. Dadurch verkleinert sich der Radius des Auflagebereichs, und die Flasche kann leichter umfallen. Die Ausbildung von Standfüssen im Bodenteil verstärkt das Bodenteil in einem gewissen Ausmass und gewährleistet einen konstanten Radius des Auflagebereichs. Die aus dem Stand der Technik bekannten Flaschen weisen üblicherweise einen flachen Flaschenboden auf, bei dem die Gefahr besteht, dass er sich insbesondere bei einem erhöhten Innendruck nach aussen wölbt. Die Standfusse sind durch relativ lange axiale Einbuchtungen der Flaschenwandung voneinander getrennt, die sich bis zum Flaschen- boden erstrecken. Vom Auflagebereich der Standfusse verlaufen etwa trapezfö ig ausgebildete Wandungsteile schräg zum Flaschenboden, der gegenüber dem Auflagebereich axial zurückgesetzt ist. Die Grosse der Einbuchtungen ist notwendig, um dem Flaschenboden die erforderliche Steifigkeit zu verleihen, damit er durch das Gewicht und den Innendruck des Flascheninhalts nicht ausgebeult werden kann. Andererseits nehmen die Einbuchtungen axial relativ viel Platz in Anspruch und verkleinern die für eine Etikettierung zur Verfügung stehende Fläche. Dies kann insbesondere bei Kunststoffflaschen, deren Höhe durch Normen festgelegt ist, zu Schwierigkeiten führen. Zudem erwecken die hohen Standbeine beim Verbraucher oft nur wenig Vertrauen in die Standfestigkeit der Flasche.Plastic bottles have a bottle body that is equipped with a bottle neck with a pouring opening. A bottom part adjoins the bottle body, which usually has a regular, preferably circular or oval cross-sectional area. The bottom part comprises a bottle bottom, which closes the bottle body and preferably a number of feet, which are separated from one another by indentations in the bottle wall. Compared to bottles, the bottom part of which only includes the bottom of the bottle, plastic bottles with feet generally have greater tipping stability. The mostly flat bottle bottom can bulge due to the weight of the bottle holder. This reduces the radius of the support area and the bottle can fall over more easily. The formation of feet in the base part strengthens the base part to a certain extent and ensures a constant radius of the support area. The bottles known from the prior art usually have a flat bottle bottom, in which there is a risk that it bulges outwards, in particular if the internal pressure is increased. The feet are separated from each other by relatively long axial indentations of the bottle wall, which extend to the bottom of the bottle. From the support area of the feet, approximately trapezoidal wall parts run obliquely to the bottle bottom, which is axially set back with respect to the support area. The size of the indentations is necessary in order to give the bottle base the necessary rigidity so that it cannot bulge out due to the weight and the internal pressure of the bottle contents. On the other hand, the indentations take up a relatively large amount of space axially and reduce the area available for labeling. This can lead to difficulties, particularly in the case of plastic bottles, the height of which is defined by standards. In addition, the high pillars often give consumers little confidence in the stability of the bottle.

Aufgabe der vorliegenden Erfindung ist es, diese Nachteilen des Stands der Technik zu vermeiden. Es soll eine Kunststoffflasche geschaffen werden, die eine ausreichend hohe Standfestigkeit, insbesondere Kippstabilität aufweist. Der für die Etikettierung zur Verfügung stehende Raum soll optimiert werden; insbesondere soll auch bei weniger hohen Flaschen, beispielsweise bei 0,33 1 Flaschen mit genormter Höhe, eine ausreichend grosse Fläche für die Anbringung einer Etikette bereitgestellt werden. Dabei soll die Kunststoffflasche ein ansprechendes Äusseres aufweisen und beim Konsumenten Vertrauen in ihre Standfestigkeit hervorrufen.The object of the present invention is to avoid these disadvantages of the prior art. A plastic bottle is to be created which has a sufficiently high stability, in particular tilting stability. The space available for labeling should be optimized; In particular, even with less high bottles, for example 0.33 liter bottles with a standardized height, a sufficiently large area should be provided for the application of a label. The plastic bottle should have an appealing exterior and inspire confidence in its stability.

Die Lösung dieser Aufgaben besteht in einer Kunststoffflasche, welche die im kennzeichnenden Abschnitt des Patentanspruchs 1 angeführten Merkmale aufweist. Weiterbildungen und/ oder vorteilhafte Ausführungsvarianten der Erfindung sind Gegenstand der abhängigen Ansprüche. Die Erfindung schlägt eine Kunststoffflasche mit einem Flaschenkörper und einem daran anschliessenden Bodenteil, der einen die Flasche abschliessenden Flaschenboden und durch Einbuchtungen in der Flaschenwandung voneinander getrennte Standfusse umfasst, vor, bei welcher der Flaschenboden eine in das Flascheninnere gerichtete Wölbung aufweist und die axiale Erstreckung der die Standfusse trennenden Einbuchtungen im wesentlichen gleich oder kleiner ist als die axiale Scheitelhöhe der Wölbung des Flaschenbodens.The solution to these problems consists in a plastic bottle, which has the features listed in the characterizing section of claim 1. Further developments and / or advantageous embodiment variants of the invention are the subject of the dependent claims. The invention proposes a plastic bottle with a bottle body and an adjoining base part, which comprises a bottle base that closes the bottle and feet that are separated from one another by indentations in the bottle wall, in which the bottle base has a curvature directed into the interior of the bottle and the axial extension of the The indentations separating the base are substantially equal to or smaller than the axial apex height of the curvature of the bottle base.

Die nach innen gerichtete Wölbung des Flaschenbodens verleiht diesem eine ausreichend grosse Steifigkeit, um dem Gewicht des Flascheninhalts und dem Innendruck, beispielsweise von C02 - hältigen Getränken ausreichend Stand zu halten. Die bei vergleichbarer Wandstärke grössere Steifigkeit des Flaschenbodens erlaubt es auch, die Einbuchtungen zwischen den Standfüssen weniger stark ausgeprägt auszubilden. Dabei erweist es sich als zweckmässiger Kompromis zwischen einer zusätzlichen Versteifung und dem Platz- bedarf, wenn die axiale Erstreckung der Einbuchtungen in der Flaschenwandung gleich oder kleiner ist, als die axiale Scheitelhöhe der Wölbung des Flaschenbodens. Die Einbuchtungen nehmen deutlich weniger Raum ein als bei den Kunststoffflaschen des Stands der Technik. Dadurch steht für die Etikettierung der Flasche eine grössere, durchgehende Fläche zu Verfügung. Die kleineren Einbuchtungen führen i Bodenteil, insbesondere im Auflagebereich der Standfusse zu einer günstigeren Verteilung der Druckbelastung durch das Gewicht des Flascheriinhalts auf, was sich vorteilhaft auf die Standfestigkeit der Kunststoffflasche auswirkt.The inward curvature of the bottle base gives it sufficient rigidity to withstand the weight of the bottle content and the internal pressure, for example of drinks containing C0 2 , sufficiently. The greater rigidity of the bottle base with a comparable wall thickness also makes it possible to make the indentations between the feet less pronounced. It proves to be an appropriate compromise between additional stiffening and the space requirement if the axial extent of the indentations in the bottle wall is equal to or less than the axial apex height of the curvature of the bottle bottom. The indentations take up significantly less space than in the case of the plastic bottles of the prior art. This means that a larger, continuous surface is available for labeling the bottle. The smaller indentations lead to a more favorable distribution of the pressure load due to the weight of the bottle contents, in particular in the support area of the feet, which has an advantageous effect on the stability of the plastic bottle.

In einer aus Steifigkeits- und Stabilitätsgründen vorteilhaften Ausführungsvariante der Erfindung ist die Wölbung des Flaschenbodens im wesentlichen kalottenförmig ausgebildet. Dabei weist sie einen Krümmungsradius auf, der etwa die Hälfte des Radius bis etwa das Zweifache des Auflagebereichs der Standfusse beträgt. Zwar kann die Kunststoffflasche prinzipiell jeden gewünschten Querschnitt aufweisen. Aus Symmetriegründen sind jedoch Kunststoffflaschen, deren Bodenteil einen regel ä- ssigen, vorzugsweise kreisförmigen oder auch ovalen Querschnitt aufweist, bevorzugt. Diese weisen in der Regel eine bessere Standfestigkeit auf und sind meist auch kosten- günstiger in der Herstellung.In an embodiment variant of the invention which is advantageous for reasons of rigidity and stability, the curvature of the bottle base is essentially dome-shaped. It has a radius of curvature which is approximately half the radius to approximately twice the contact area of the feet. In principle, the plastic bottle can have any desired cross section. For reasons of symmetry, however, plastic bottles, the base part of which has a regular, preferably circular or also oval cross section, are preferred. As a rule, these have better stability and are usually also cheaper to manufacture.

Für die Festlegung einer stabilen Standfläche reichen bekanntermassen i Prinzip drei Standf sse aus. Es erweist sich jedoch von Vorteil, wenn der Bodenteil wenigstens fünf Standfusse besitzt, die jeweils durch Einbuchtungen voneinander getrennt sind. Die Ein- buchtungen erhöhen die Festigkeit des Bodenteils und vergrössern die Fläche, auf die das Gewicht des Flascheninhalts einwirkt.As is generally known, three feet are sufficient to determine a stable stand area. However, it proves advantageous if the base part has at least five feet, which are each separated from one another by indentations. The indentations increase the strength of the base part and increase the area on which the weight of the bottle contents acts.

In einer weiteren Variante der Erfindung ist der Flaschenboden mit Verstärkungsrippen versehen. Die Verstärkungsrippen erhöhen die Steifigkeit des nach innen gewölbten Fla- schenbodens noch zusätzlich. Dadurch kann der Flaschenboden mit einer geringeren Wandstärke ausgebildet werden. Dies hat Vorteile hinsichtlich des Eigengewichts der Kunststoffflasche und wirkt sich, wegen des verringerten Materialbedarfs, auch vorteilhaft auf die Herstellungskosten aus. Vorzugsweise sind die Verstärkungsrippen im Bereich der Standfusse vorgesehen. Dabei weist jeder Standfuss wenigstens eine Verstär- kungsrippe auf, die sich vom Auflagebereich des Standfusses im wesentlichen radial in Richtung des Scheitels der Wölbung des Flaschenbodens erstreckt. Indem die Verstärkungsrippen vorzugsweise gegenüber der Aussenwandung des Flaschenbodens hervorspringen, geht durch die Rippen auch kein Abfüllvolumen verloren.In a further variant of the invention, the bottle base is provided with reinforcing ribs. The reinforcing ribs further increase the rigidity of the bottle base, which is curved inwards. As a result, the bottle base can be designed with a smaller wall thickness. This has advantages with regard to the weight of the plastic bottle and, because of the reduced material requirement, also has an advantageous effect on the production costs. The reinforcing ribs are preferably provided in the area of the feet. Each stand has at least one reinforcing rib which extends from the support area of the stand essentially radially in the direction of the apex of the curvature of the bottle base. Since the reinforcing ribs preferably protrude from the outer wall of the bottle base, no filling volume is lost through the ribs.

Die erfindungsgemässe Kunststoff flasche eignet sich für die Herstellung mit allen gebräuchlichen Fabrikationsmethoden. Ein aus Kostengründen und wegen der guten Be- herrschbarkeit der Flaschenparameter besonders vorteilhaftes massentechnisches Herstellverfahren stellt dabei das Spritzstreckblasverfahren, bzw. in Englisch Injection Stretch Blow Moulding ISBM, dar. Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen des Streckwerks. Es zeigen in schematischer Darstellung:The plastic bottle according to the invention is suitable for production with all common manufacturing methods. A mass-technical manufacturing process that is particularly advantageous for reasons of cost and because the bottle parameters are easy to control is the injection stretch blow molding process. Further advantages and features of the invention result from the following description of exemplary embodiments of the drafting system. In a schematic representation:

Fig. 1 eine Seitenansicht einer erfindungsgemässen Kunststoffflaschen;1 shows a side view of a plastic bottle according to the invention;

Fig. 2 eine Seitenansicht eines Bodenteils der Kunststoffflasche;2 is a side view of a bottom part of the plastic bottle;

Fig. 3 eine Sicht auf das Bodenteil eines Ausführungsbeispiels der Erfindung; undFig. 3 is a view of the bottom part of an embodiment of the invention; and

Fig. 4 eine Schnittdarstellung gemäss Schnittlinie IV-IN in Fig. 3.4 shows a sectional view according to section line IV-IN in FIG. 3.

Fig. 1 und 2 zeigen eine erfindungsgemäss ausgebüdete Flasche in Gesamtansicht (Fig. 1) und in einer DetaüdarsteUung (Fig. 2). Die Flasche ist in Fig. 1 gesamthaft mit dem Bezugszeichen 1 versehen. Sie besteht aus einem thermoplastischen Kunststoff und ist vorzugsweise in einem Streckblasverfahren, insbesondere im Spritzstreckblasverfahren ISBM, fertigbar. Als Kunststoffe kommen alle für die bekannten Herstellverfahren gebräuchlichen thermoplastischen Kunststoffe, beispielsweise Polyefhylen-Terephtalat (PET) in Frage.FIGS. 1 and 2 show a bottle which has been soaked according to the invention in a general view (FIG. 1) and in a detailed view (FIG. 2). The bottle is provided overall with the reference number 1 in FIG. 1. It consists of a thermoplastic and can preferably be produced in a stretch blow molding process, in particular in the injection stretch blow molding process ISBM. Suitable plastics are all thermoplastic materials customary for the known production processes, for example polyethylene terephthalate (PET).

Die Kunststoffflasche 1 besitzt einen Flaschenkörper 2, der mit einem Flaschenhals 3 mit einer Ausgiessöffnung 4 ausgestattet ist. Am Flaschenhals 3 ist beispielsweise ein Aussengewinde 5 vorgesehen, welches es erlaubt, die Flasche 1 mit einem Schraubverschluss zu verschliessen. An den üblicherweise zylindrischen Flaschenkörper 2 scrüiesst ein Bodenteil 6 an, der meist eine regelmässige, vorzugsweise eine kreisförmige Querschnittsfläche aufweist. Der Bodenteü 6 umfasst einen Flaschenboden 7, der den Flaschenkörper 2 ab- schliesst und eine Anzahl von Standfüssen 8, die durch Einbuchtungen 9 in der Fla- schenwandung voneinander getrennt sind. Soweit enspricht die Kunststoffflasche 1 den aus dem Stand der Technik bekannten Flaschen dieses Typs.The plastic bottle 1 has a bottle body 2, which is equipped with a bottle neck 3 with a pouring opening 4. An external thread 5 is provided on the bottle neck 3, for example, which allows the bottle 1 to be closed with a screw cap. A bottom part 6, which usually has a regular, preferably a circular, cross-sectional area, scrubs on the usually cylindrical bottle body 2. The floor box 6 comprises a bottle bottom 7 which closes the bottle body 2 and a number of feet 8 which are formed by indentations 9 in the bottle. are separated from each other. To this extent, the plastic bottle 1 corresponds to the bottles of this type known from the prior art.

Zum Unterschied von den Produkten des Stands der Technik ist bei der erfindungsge- mäss ausgebÜdeten Kunststoffflasche der Flaschenboden 7 in das Flascheninnere gewölbt. Dies ist insbesondere aus der SchnittdarsteUung in Fig. 4 ersichtlich. Die Wölbung des Flaschenbodens 7 ist im wesentlichen kalottenförmig ausgebildet. Die Wölbung besitzt dabei einen Krümmungsradius r, der etwa die Hälfte bis etwa das Zweifache des Radius s des Auflagebereichs der Standfusse 8 aufweisen kann. Im dargesteUten Ausführungsbei- spiel ist der Krümmungsradius r der Wölbung etwa 1,2-fach grösser als der Radius s des Auflagebereichs. Der Radius des Auflagebereichs bezieht sich dabei auf die am weitesten von der Flaschenachse entfernte Kontaktlinie der Standfusse 8 mit dem Untergrund. Die Einbuchtungen 9 in der Flaschenwandung besitzen eine axiale Länge 1, die gleich oder kleiner ist als die Scheitelhöhe h der Wölbung des Flaschenbodens 7.In contrast to the products of the prior art, the bottle base 7 is arched into the interior of the bottle in the plastic bottle designed according to the invention. This can be seen in particular from the sectional illustration in FIG. 4. The curvature of the bottle base 7 is essentially dome-shaped. The curvature has a radius of curvature r, which can have approximately half to approximately twice the radius s of the contact area of the feet 8. In the illustrated embodiment, the radius of curvature r of the curvature is approximately 1.2 times larger than the radius s of the contact area. The radius of the support area relates to the line of contact of the feet 8 with the subsurface that is furthest from the bottle axis. The indentations 9 in the bottle wall have an axial length 1 that is equal to or less than the apex height h of the curvature of the bottle bottom 7.

Gemäss dem in Fig. 3 dargestellten Ausführungsbeispiel weist der Bodenteü 6 der Kunststoffflasche sechs Standfusse 8 auf, die von ebenso vielen Einbuchtungen 9 voneinander getrennt sind. Bekanntermassen würden bereits drei Standfusse 8 ausreichen, um ein ÄufsteUen der Flasche zu ermöglichen. Aus Stabilitätsgründen erweist es sich jedoch von von NorteÜ, wenn wenigstens fünf Standfusse 8 vorgesehen sind. Jeder Standfuss 8 weist eine Nerstärkungsrippe 10 auf, die sich vom Auflagebereich des Standfusses 8 im wesentlichen radial in Richtung des Scheitels der Wölbung des Flaschenbodens 7 erstreckt. Die Nerstärkungsrippen 10 erhöhen die Steifigkeit des nach innen gewölbten Flaschen- bo- dens 7 noch zusätzlich. Dabei überragen die Nertärkungsrippen 10 die Aussenseite des Flachenbodens 7. Die Einbuchtungen 9 weisen im Auflagebereich der Standfusse 8 eine Öffnungsweite auf, die beispielsweise gleich oder kleiner ist als die Breite der Standfusse 8 in diesem Bereich. Die Einbuchtungen 9 des dargesteUten Ausführungsbeispiels besitzen eine vom Auflagebereich der Standfusse 8 an gemessene Erstreckung t, die etwa ein Drittel der Erstreckung des Flaschenbodens 7 in radialer Richtung beträgt. According to the exemplary embodiment shown in FIG. 3, the bottom door 6 of the plastic bottle has six feet 8, which are separated from one another by as many indentations 9. As is known, three feet 8 would already be sufficient to enable the bottle to be opened. For reasons of stability, it has been proven by von NorteÜ if at least five feet 8 are provided. Each stand 8 has a reinforcement rib 10 which extends from the support area of the stand 8 essentially radially in the direction of the apex of the curvature of the bottle base 7. The reinforcement ribs 10 additionally increase the rigidity of the inwardly curved bottle base 7. The reinforcing ribs 10 protrude beyond the outside of the flat bottom 7. The indentations 9 have an opening width in the contact area of the feet 8, which is, for example, the same or smaller than the width of the feet 8 in this area. The indentations 9 of the illustrated embodiment have an extension t measured from the contact area of the feet 8, which is approximately one third of the extent of the bottle base 7 in the radial direction.

Claims

Patentansprüche claims Kunststoffflasche mit einem Haschenkörper (2) und einem daran anschliessenden Bodenteü (6), der einen die Flasche (1) abschliessenden Flaschenboden (7) und durch Einbuchtungen (9) in der Flaschenwandung voneinander getrennte Standfusse (8) umfasst, dadurch gekennzeichnet, dass der Flaschenboden (7) eine in das Flascheninnere gerichtete Wölbung aufweist, und die axiale Erstreckung (1) der die Standfusse (8) trennenden Einbuchtungen (9) im wesentlichen gleich oder kleiner ist als die axiale Scheitelhöhe (h) der Wölbung des Flaschenbodens (7).Plastic bottle with a hash body (2) and an adjoining base (6), which comprises a bottle base (7) closing the bottle (1) and feet (8) separated from one another by indentations (9) in the bottle wall, characterized in that the The bottle base (7) has a curvature directed into the interior of the bottle, and the axial extent (1) of the indentations (9) separating the feet (8) is substantially the same or smaller than the axial apex height (h) of the curvature of the bottle base (7) , Kunststoffflasche nach Anspruch 1, dadurch gekennzeichnet, dass die Wölbung des Flaschenbodens (7) i wesentlichen kalottenförmig ausgebüdet ist und einen Krümmungsradius (r) aufweist, der etwa die Hälfte bis etwa das Zweifache des Radius (s) des Auflagebereichs der Standfusse (8) beträgt.Plastic bottle according to claim 1, characterized in that the curvature of the bottle base (7) i is essentially dome-shaped and has a radius of curvature (r) which is approximately half to approximately twice the radius (s) of the contact area of the feet (8) , Kunststoffflasche nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Bodenteü (6) einen regeimässigen, vorzugsweise einen kreisförmigen Querschnitt aufweist.Plastic bottle according to claim 1 or 2, characterized in that the bottom part (6) has a regular, preferably a circular cross-section. 4. Kunststoffflasche nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Bodenteü (6) wenigstens fünf Standfusse (8) aufweist.4. Plastic bottle according to one of the preceding claims, characterized in that the bottom panel (6) has at least five feet (8). Kunststoffflasche nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Flaschenboden (7) mit Nerstärkungsrippen (10)ausgestattet ist. Plastic bottle according to one of the preceding claims, characterized in that the bottle base (7) is equipped with reinforcing ribs (10). Kunststoffflasche nach Anspruch 5, dadurch gekennzeichnet, dass jeder Standfuss (8) wenigstens eine Verstärkungsrippe (10) aufweist, die sich vom Auflagebereich des Standfusses (8) im wesentlichen radial in Richtung des Scheitels der Wölbung des Flaschenbodens (7) erstreckt. Plastic bottle according to claim 5, characterized in that each stand (8) has at least one reinforcing rib (10) which extends essentially radially from the support area of the stand (8) in the direction of the apex of the curvature of the bottle bottom (7). 7. Kunststoffflasche nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Verstärkungsrippen (10) gegenüber der Aussenwandung des Flaschenbodens (7) hervorspringen.7. Plastic bottle according to claim 5 or 6, characterized in that the reinforcing ribs (10) protrude relative to the outer wall of the bottle base (7). 8. Kunststoffflasche nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie im Spritzstreckblasverfahren (ISBM) hergesteUt ist. 8. Plastic bottle according to one of the preceding claims, characterized in that it is manufactured by injection stretch blow molding (ISBM).
EP03747090A 2002-04-25 2003-02-10 Plastic bottle Expired - Lifetime EP1497189B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH7092002 2002-04-25
CH709022002 2002-04-25
PCT/EP2003/001278 WO2003091117A1 (en) 2002-04-25 2003-02-10 Plastic bottle

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EP1497189A1 true EP1497189A1 (en) 2005-01-19
EP1497189B1 EP1497189B1 (en) 2006-05-17

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EP (1) EP1497189B1 (en)
AT (1) ATE326392T1 (en)
AU (1) AU2003263452A1 (en)
DE (1) DE50303371D1 (en)
PL (1) PL202047B1 (en)
RU (1) RU2299162C2 (en)
WO (1) WO2003091117A1 (en)

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Publication number Priority date Publication date Assignee Title
FR2892048B1 (en) * 2005-10-17 2008-01-04 Sidel Sas MOLD BOTTOM FOR MOLD FOR MANUFACTURING THERMOPLASTIC CONTAINERS, AND MOLDING DEVICE EQUIPPED WITH AT LEAST ONE MOLD EQUIPPED WITH SUCH A BOTTOM.
FR2910438B1 (en) 2006-12-21 2010-12-10 Evian Saeme Sa CHAMPAGNE BOTTLE PLASTIC BOTTLE AND MANUFACTURING METHOD THEREOF
ITTV20120071A1 (en) * 2012-05-04 2013-11-05 Pet Engineering S R L BOTTLE OF POLYMERIC MATERIAL
FR3007392B1 (en) * 2013-06-25 2016-02-05 Sidel Participations RECIPIENT MINI PETALOIDE GROOVE
TWI523919B (en) 2014-12-04 2016-03-01 財團法人工業技術研究院 Anti-fogging and heat insulating coating composition, method for preparing therefof and film formed from the composition
US10926911B2 (en) * 2018-10-15 2021-02-23 Pepsico. Inc. Plastic bottle with base

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US4465199A (en) * 1981-06-22 1984-08-14 Katashi Aoki Pressure resisting plastic bottle
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US4850493A (en) * 1988-06-20 1989-07-25 Hoover Universal, Inc. Blow molded bottle with self-supporting base reinforced by hollow ribs
JPH0363114A (en) * 1989-08-02 1991-03-19 Toyo Seikan Kaisha Ltd Package of multi-wall plastic container
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See references of WO03091117A1 *

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RU2004134351A (en) 2005-06-10
EP1497189B1 (en) 2006-05-17
ATE326392T1 (en) 2006-06-15
AU2003263452A1 (en) 2003-11-10
PL202047B1 (en) 2009-05-29
WO2003091117A1 (en) 2003-11-06
DE50303371D1 (en) 2006-06-22
RU2299162C2 (en) 2007-05-20
PL371793A1 (en) 2005-06-27

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