EP2619097B1 - Structure de fond pour une bouteille en plastique - Google Patents

Structure de fond pour une bouteille en plastique Download PDF

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Publication number
EP2619097B1
EP2619097B1 EP11758410.2A EP11758410A EP2619097B1 EP 2619097 B1 EP2619097 B1 EP 2619097B1 EP 11758410 A EP11758410 A EP 11758410A EP 2619097 B1 EP2619097 B1 EP 2619097B1
Authority
EP
European Patent Office
Prior art keywords
base structure
structure according
edge portion
outwardly curved
bottle
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.)
Not-in-force
Application number
EP11758410.2A
Other languages
German (de)
English (en)
Other versions
EP2619097A1 (fr
Inventor
Peter Hüls
Roland Concin
Gabriele Weber-Trinkfass
Andrea Kutscheid
Tilmann Kessler
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.)
Red Bull GmbH
Original Assignee
Red Bull 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
Application filed by Red Bull GmbH filed Critical Red Bull GmbH
Publication of EP2619097A1 publication Critical patent/EP2619097A1/fr
Application granted granted Critical
Publication of EP2619097B1 publication Critical patent/EP2619097B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • B65D23/001—Supporting means fixed to the container
    • 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—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, 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
    • B65D1/0276—Bottom construction having a continuous contact surface, e.g. Champagne-type bottom
    • 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—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, 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
    • 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—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, 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

Definitions

  • the invention relates to a bottom construction for a plastic bottle, in particular for pressurized beverages, comprising an annular edge portion, which is preferably formed integrally with the side wall of the bottle, and surrounded by the edge portion and integral with this one concave portion, wherein the concave Section star-shaped, has its rigidity enhancing reinforcing elements.
  • the invention relates to a plastic bottle for pressurized drinks with a bottom construction, the annular edge portion is preferably formed integrally with the side wall of the bottle.
  • a floor construction of the type mentioned is, for example, the DE-OS 1801368 refer to.
  • Plastic bottles are od only under certain design conditions for receiving and storage of pressurized drinks. Like. Suitable.
  • One of the major difficulties associated with the use of plastic bottles for the stated purpose is that the center portion of the bottle bottom tends to bow outward beyond the edge of the bottom, so that the stability of such Bottles is impaired.
  • champagne the bottom of the bottle is curved inwards and can thus withstand a certain internal pressure without sagging.
  • the champagne flute is especially common with glass bottles.
  • the suitability for pressurized drinks depends decisively on the wall thickness of the floor.
  • the wall thickness is too thin, the construction is too flexible and excessive cambering of the bottom of the bottle can not be prevented.
  • the wall thickness is too thick, the material consumption is great and the manufacturing costs and the weight of the bottle too high.
  • Champagne ground of the conventional type are therefore from a certain CO 2 concentration of the beverage from an economic point of view can not be used.
  • the soil has constrictions extending up to the side walls, between which arched, petal-like shaped fields are formed. Petaloid soils are particularly common in plastic bottles and withstand a high pressure even at a relatively low wall thickness of the soil.
  • the disadvantage is the lower stability and in particular the lower static tilt angle, so that the risk of falling over of the bottle is greater than in a comparable bottle with champagne.
  • the appearance of the bottle is affected by the petaloid fields extending up to the side wall.
  • a base for a plastic container according to the preamble of claim 1, with a central vertical axis, said base having an outer annular portion for supporting the container on a surface, a central region which is provided about the central vertical axis, and a Base region, which extends between the annular region and the central support region comprises.
  • the base region has at least two protrusions extending radially from a position adjacent to the annular region toward the central region, each protrusion having to comprise at least two stepped segments.
  • Containers equipped with such a base should have improved dimensional stability.
  • the WO 2007/060529 A2 relates to a container of a compression molded preform having a base, wherein the thickness of the base in the region of the major axis has to be less than or equal to 8.2 times the thickness of the container sidewall.
  • the support surface of the base may have a substantially continuous annular portion surrounding a convex, inwardly facing portion of the container.
  • the present invention therefore aims to develop a bottom construction for a plastic bottle such that the bottle is suitable for low-pressure and low consumption of material for the absorption of high-pressure drinks.
  • the adjustment should be simple, inexpensive and automated with short cycle times possible.
  • the bottle should have a pleasing and high-quality appearance and in particular the floor construction should bring no restrictions on the design of the bottle shape with it.
  • the invention provides a floor construction according to the features of claim 1.
  • the floor construction is thus based on the shape of a champagne flute, with the invention proposing elements for stiffening the concave bottom section in such a way that the material consumption is not or only slightly increased compared to a simple champagne flute.
  • the reinforcing elements provided according to the invention do not lead to thickening of the material at any point, since they are formed only by outwardly curved regions of the concave bottom section. It has surprisingly been found that such stiffening areas lead even at very low wall thickness of the soil to a very rigid construction in which even very high internal pressures of the bottle can not cause buckling of the soil.
  • the plastic bottle can be easily manufactured by conventional and proven methods.
  • PET polyethylene terephthalate
  • the production preferably takes place from a so-called PET preform, an injection-molded preform.
  • the way from a PET preform to the PET bottle goes through the following steps:
  • the preform is first heated, ie a temperature profile corresponding to the desired wall thickness distribution is introduced into the preform.
  • infrared heat radiators can be used for this purpose.
  • the preform is clamped in a mostly three-part mold and a mandrel moves into the preform and stretches it to the final length of the bottle. Compressed air blows the resulting tube into the final shape, after which the temperature of the bottle is brought below the glass transition temperature by cooling the tool.
  • the mold opens and the finished bottle is ejected.
  • the concave portion including the convex portions can be easily formed with a substantially uniform wall thickness.
  • “Essentially” here means that slight differences in the wall thickness can occur due to the production, such as the fact that when pressing the preform to the mold, the material is stretched more in the outwardly arched areas than in adjacent areas, so that the floor may be slightly thinner in these areas.
  • the outwardly curved portions are preferably elongated, i. that their extent in the radial direction is greater than in the circumferential direction. This leads to a particularly stable floor construction.
  • the outwardly curved areas are spaced apart in the circumferential direction.
  • the outwardly curved regions are evenly distributed in the circumferential direction, e.g. six areas are provided. Conceivable, depending on the diameter of the bottle but also 3,4,5,7,8,9,10,11 or 12 areas.
  • the outwardly curved areas can also serve as footprint of the bottle.
  • the embodiment is preferably such that the outwardly curved regions comprise a section parallel to a footprint or forming a footprint.
  • the parallel to the footprint section may, for example, a projecting to the footprint protrusion or the like ..
  • the bottle can also be in the conventional manner at the edge of the soil.
  • the formation is then made such that the annular edge portion of the floor construction has a footprint of the floor construction.
  • This results in a ground contact of the bottle bottom as in a conventional bottle with champagne ground along the bottom edge.
  • aesthetic requirements can be taken into account and, as in the case of a champagne bottle, a high-quality bottle design can be realized in which the sidewalls of the bottle run freely to the floor without stiffening elements or the like being visible.
  • the outwardly curved areas laterally and radially inward on the comprise curved sections which are formed parallel to the footprint or which form a footprint.
  • a further improvement in the stability of the floor construction preferably results from the fact that the outwardly curved areas surround an inwardly curved central area.
  • a further improvement in the stability of the floor construction results furthermore from the fact that the floor construction has at least one annular recess between the outwardly curved areas and the edge section, in particular adjacent to the edge section.
  • a further improvement in the stability of the floor construction preferably results from the fact that the floor construction has at least one annular recess between the outwardly curved areas and the inwardly curved central area.
  • a further improvement in the stability of the floor construction is further preferred in that the floor construction has an annular recess between the outwardly curved areas and the inwardly curved central area.
  • the outwardly curved regions preferably have a radial extension which essentially corresponds to the radial distance between the edge section and the central region, as a result of which maximum stiffening is achieved.
  • the floor construction according to the invention should be suitable for high internal pressures, wherein the internal pressure depends primarily on the CO 2 content of the beverage.
  • An advantageous development therefore provides that the bottom construction is designed to withstand an internal pressure of the bottle at a CO 2 concentration of up to 5 g / l at a temperature of 20 ° C.
  • FIG.1 a plastic bottle from the side
  • Fig.2 a bottom view of the bottle
  • Figure 3 a sectional view taken along the line III-III of Fig. 2 ,
  • Fig.1 is a plastic bottle, in particular PET bottle 1, which has a side wall 2 and an integrally formed with the side wall 2 bottom 3.
  • the bottleneck 4 has an external thread, not shown, onto which the screw cap 5 is screwed.
  • a bottom view of the bottom 3 is shown.
  • the bottom 3 has an annular edge portion 6, with which the bottle can stand on a substrate. Between the edge portion 6 and the concave portion 7, an annular recess 8 is provided.
  • the concave portion 7 has outwardly curved, that is convex portions 9, each one adjacent to a footprint portion 10, laterally adjoining the formed parallel to the footprint portion 10 adjacent curved portions 11 and radially inwardly to the parallel to the footprint formed portion 10 subsequent have curved portions 12. Between the outwardly curved regions 9 and the central, inwardly curved region 13, an annular recess 14 is likewise arranged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Claims (16)

  1. Construction de fond pour une bouteille en plastique, en particulier pour des boissons sous pression, comprenant un tronçon de bord (6) annulaire et un tronçon concave (7) entouré du tronçon de bord (6) et constitué d'une seule pièce avec lui, le tronçon concave (7) présentant des éléments de renforcement disposés en étoile et augmentant sa rigidité, les éléments de renforcement étant formés de zones, bombées vers l'extérieur (9), du tronçon concave (7), et le tronçon concave (7) étant constitué avec une épaisseur de paroi essentiellement uniforme, y compris les zones bombées vers l'extérieur (9), caractérisée en ce que la construction de fond présente au moins un creux annulaire (8) entre les zones bombées vers l'extérieur (9) et le tronçon de bord (6).
  2. Construction de fond selon la revendication 1, caractérisée en ce que les zones bombées vers l'extérieur (9) sont espacées les unes des autres dans la direction circonférentielle.
  3. Construction de fond selon la revendication 1 ou 2, caractérisée en ce que les zones bombées vers l'extérieur (9) comprennent un tronçon parallèle à une surface de pose ou constituant une surface de pose (10).
  4. Construction de fond selon la revendication 1, 2 ou 3, caractérisée en ce que le tronçon de bord (6) annulaire présente une surface de pose de la construction de fond.
  5. Construction de fond selon la revendication 3 ou 4, caractérisée en ce que les zones bombées vers l'extérieur (9) comprennent des tronçons courbés (11, 12) se raccordant, latéralement ou radialement intérieurement, au tronçon constitué parallèlement à la surface de pose ou constituant une surface de pose (10).
  6. Construction de fond selon l'une des revendications 1 à 5, caractérisée en ce que les zones bombées vers l'extérieur (9) entourent une zone centrale (13) bombée vers l'intérieur.
  7. Construction de fond selon l'une des revendications 1 à 6, caractérisée en ce que la construction de fond présente le creux annulaire (8) au voisinage du tronçon de bord (6) et/ou en ce que le tronçon de bord (6) annulaire est constitué d'un seul tenant avec la paroi latérale (2) de la bouteille.
  8. Construction de fond selon la revendication 6 ou 7, caractérisée en ce que la construction de fond présente au moins un creux annulaire (14) entre les zones bombées vers l'extérieur (9) et la zone centrale (13) bombée vers l'intérieur.
  9. Construction de fond selon la revendication 6, 7 ou 8, caractérisée en ce que les zones bombées vers l'extérieur (9) présentent une extension radiale qui correspond essentiellement à l'écart radial entre le tronçon de bord (6) et la zone centrale (13).
  10. Construction de fond selon l'une des revendications 1 à 9, caractérisée en ce que les zones bombées vers l'extérieur (9) sont constituées de façon allongée, leur extension dans la direction radiale étant supérieure à leur extension dans la direction circonférentielle.
  11. Construction de fond selon l'une des revendications 1 à 10, caractérisée en ce que le tronçon de bord (6) annulaire et/ou le tronçon concave (7) présente une épaisseur de paroi moyenne inférieure ou égale à 1,95 mm, de préférence inférieure ou égale à 1,5 mm, en particulier ne dépasse nulle part une épaisseur de paroi de 1,95 mm, de préférence 1,5 mm, de préférence 1 mm.
  12. Construction de fond selon l'une des revendications 1 à 11, caractérisée en ce que la construction de fond est constituée pour résister à une pression interne de la bouteille en présence d'une concentration de CO2 atteignant 5 g/ll en présence d'une température de 20 °C.
  13. Construction de fond selon l'une des revendications 1 à 12, caractérisée en ce que le tronçon de bord (6) et/ou le tronçon concave (7) comprend du poly(téréphtalate d'éthylène) (PET) ou est composé de poly(téréphtalate d'éthylène) (PET).
  14. Bouteille en plastique pour des boissons sous pression avec une construction de fond selon l'une des revendications 1 à 13, dont le tronçon de bord (6) annulaire est constitué de préférence d'un seul tenant avec la paroi latérale (2) de la bouteille.
  15. Bouteille en plastique selon la revendication 14, caractérisée en ce que la bouteille en plastique ainsi que la construction de fond comprend du poly(téréphtalate d'éthylène) (PET) ou est composé de poly(téréphtalate d'éthylène) (PET).
  16. Bouteille en plastique selon la revendication 14 ou 15, caractérisée en ce que la bouteille en plastique est fabriquée à partir d'une préforme moulée par injection par soufflage contre un outil de formage.
EP11758410.2A 2010-09-22 2011-09-21 Structure de fond pour une bouteille en plastique Not-in-force EP2619097B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1577/2010A AT510506B1 (de) 2010-09-22 2010-09-22 Bodenkonstruktion für eine kunststoffflasche
PCT/EP2011/004717 WO2012038075A1 (fr) 2010-09-22 2011-09-21 Structure de fond pour une bouteille en plastique

Publications (2)

Publication Number Publication Date
EP2619097A1 EP2619097A1 (fr) 2013-07-31
EP2619097B1 true EP2619097B1 (fr) 2016-03-16

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Application Number Title Priority Date Filing Date
EP11758410.2A Not-in-force EP2619097B1 (fr) 2010-09-22 2011-09-21 Structure de fond pour une bouteille en plastique

Country Status (8)

Country Link
US (1) US9580206B2 (fr)
EP (1) EP2619097B1 (fr)
JP (1) JP5921553B2 (fr)
CN (1) CN103180212B (fr)
AT (1) AT510506B1 (fr)
AU (1) AU2011304660B2 (fr)
BR (1) BR112013006898A2 (fr)
WO (1) WO2012038075A1 (fr)

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Publication number Publication date
CN103180212B (zh) 2016-12-28
US20130270214A1 (en) 2013-10-17
JP2013538760A (ja) 2013-10-17
CN103180212A (zh) 2013-06-26
AT510506A1 (de) 2012-04-15
AT510506B1 (de) 2013-01-15
EP2619097A1 (fr) 2013-07-31
AU2011304660A1 (en) 2013-04-11
BR112013006898A2 (pt) 2016-07-12
WO2012038075A1 (fr) 2012-03-29
US9580206B2 (en) 2017-02-28
JP5921553B2 (ja) 2016-05-24
AU2011304660B2 (en) 2015-05-14

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