EP2396246B1 - Behälter, dessen boden mit einer flexiblen doppelsitz-wölbung versehen ist - Google Patents

Behälter, dessen boden mit einer flexiblen doppelsitz-wölbung versehen ist Download PDF

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Publication number
EP2396246B1
EP2396246B1 EP10707074.0A EP10707074A EP2396246B1 EP 2396246 B1 EP2396246 B1 EP 2396246B1 EP 10707074 A EP10707074 A EP 10707074A EP 2396246 B1 EP2396246 B1 EP 2396246B1
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Prior art keywords
container
seat
junction
ratio
diameter
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English (en)
French (fr)
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EP2396246A1 (de
Inventor
Michel Boukobza
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Sidel Participations SAS
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Sidel Participations SAS
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    • 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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/008—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars
    • B65D79/0081—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars in the bottom part thereof

Definitions

  • the invention relates to the manufacture of containers, such as bottles or pots, obtained by blow molding or stretch blow molding from thermoplastic preforms.
  • heat setting Frnch translation of the English expression "heat set”
  • Heat-setting only solves a part of the container deformation problems related to hot filling. Indeed, while cooling, the liquid and the air which overhangs it in the clogged container undergo a decrease in volume which tends to retract the container.
  • the document WO 2006/068511 proposes a container whose bottom can take two positions, namely an extended position in which the bottom extends projecting outside the container, and a retracted position in which the bottom extends inwardly of the container.
  • the deployed position is adopted by the bottom before filling the container, while the retracted position is adopted after filling, to accompany the retraction of the liquid due to its cooling.
  • the passage from the extended position to the retracted position may be forced by means of a tool by means of which the bottom is pressed towards the interior of the container (see Figures 12a to 12d). With this arrangement, it is possible to stiffen the body, to the benefit of the grip of the container.
  • the invention therefore aims to propose a solution for improving the safety of transport containers with projecting bottoms.
  • the container thus dimensioned has increased stability not only when it rests on its outer seat (after filling and inverting the vault accompanying the cooling of the liquid) but also when it rests on its internal seat (before filling), which is located , compared to known containers, deported to the periphery of the bottom.
  • the report B VS is for example 0.98.
  • the report B AT is 1.32.
  • the report B AT is 1.23.
  • the container preferably has, in the deployed position of the vault, an axial offset h between the outer seat and the inner seat such that: 0 , 01 ⁇ h VS ⁇ 0 , 1
  • the report h VS is 0.08.
  • the report h VS is 0.014.
  • the container preferably has, at a junction between the body and the bottom, a connection fillet having a radius r such that: r VS ⁇ 1 100
  • the tangent to the body, in the vicinity of its junction with the bottom, preferably forms with an axis of the container an angle less than 30 °.
  • the body is, in the vicinity of its junction with the bottom, substantially cylindrical, the angle referred to above being then almost zero.
  • a container 1 - in this case a wide-necked bottle - made by stretch-stretching from a thermoplastic preform such as PET (polyethylene terephthalate) have been shown.
  • This container is preferably of the HR type, and is for this purpose manufactured by stretch blow molding within a mold whose wall is heated so as to increase the crystallinity level of the material by heat input.
  • This container 1 comprises, at an upper end, a threaded neck 2 , provided with a rim 3.
  • the container 1 comprises in its upper part a shoulder 4 extended by a side wall or body 5, which has a generally symmetrical shape of revolution around a main axis X of the container 1.
  • the container 1 further comprises a bottom 6 which extends at a lower end of the container 1 in the extension of the body 5.
  • the body 5 is, in a lower portion of the container, substantially cylindrical and extends downwardly to a lower end 7 where it joins the bottom 6.
  • the bottom 6 comprises, in the immediate vicinity of this junction 7 , an annular bead 8 forming, in a particular configuration described hereinafter, a circular outer seat 9 , through which the container 1 can lie flat on a flat surface such as a table (in current use) or the upper surface of a conveyor belt (to allow handling on the production line).
  • the bottom 6 further comprises a roof 10 which extends from the outer seat 9 towards the inside thereof, that is to say in the direction of the axis X of the vessel 1.
  • the roof 10 comprises an annular membrane 11 , which extends from the bead 8 in the extension thereof in the direction of the axis X and projecting outwardly of the container 1.
  • the membrane 11 In the deployed position of the roof 10 , the membrane 11 is frustoconical of revolution about the axis X.
  • the arch 10 further comprises an annular medial portion 12 which has a cup-shaped concavity facing the outside of the container 1 and extends in the extension of the membrane 11 in the direction of the axis X and projecting towards the inside the container 1.
  • the membrane 11 and the median portion 12 together define, at their junction, an annular top portion 13 which, in the deployed position of the vault 10, constitutes the lowest zone of the container 1 (held vertically with its neck 2 open upwards) and thus forms an internal seat 14 , by which it can lie flat on a flat surface such as a table or the upper surface of a conveyor belt.
  • the vault 10 finally comprises, in the extension of the median portion 12 , a central pin 15 which extends around the axis X projecting towards the inside of the container 1.
  • the term “diameter” commonly refers to the transverse dimension of an object having a symmetry of revolution about an axis (which is the case here), it is generalized in this context to containers that do not have symmetry of revolution, and whose cross-sectional profile would for example be square, oval, etc. In this case, the term “diameter” therefore refers more generally to the transverse dimension (width) measured in any plane of symmetry - or in any plane containing the X axis - of the container 1.
  • the inner seat 14 and the outer seat 9 are sized to provide a great stability of the container 1 laid flat both in the deployed position of the arch 10 (position in which the container 1 rests on the inner seat 14 ) that in its retracted position (in which the container 1 rests on the outer seat 9).
  • the diameters A, B and C are correlated according to the following relationships: 0 , 95 ⁇ B VS ⁇ 1 and 1 , 2 ⁇ B AT ⁇ 1 , 4
  • the relation (1) reveals that the outer seat 9 is deported as far as possible towards the periphery of the bottom 6, at its junction 7 with the body 5.
  • the tangent to the body 5 forms with the axis X of the container 1 a small angle, less than 30 ° (in the exemplary embodiments shown, the body 5 has a cylindrical shape of revolution, so that this angle is substantially zero).
  • the stability of the container 1 in the retracted position of the vault 1 is increased. It should be noted that, in the exemplary embodiments illustrated, the report B VS is about 0.98.
  • the relationship (2) reveals that the ratio between the diameters B and A is close enough to 1, a gap between these two diameters being however unavoidable due to the presence of the flexible membrane 11 .
  • the range recommended by the relation (2) ensures a good compromise between two objectives that are a priori contradictory, namely on the one hand a maximization of the diameter A (that is to say a minimization of the ratio B AT ), in favor of the stability of the container 1 in the deployed position of the vault 1, and secondly a maximization of the radial extension of the membrane 11 (that is to say a maximization of the ratio B AT ) to allow a non-destructive reversal of the vault 10 to its retracted position, at least without this reversal does not cause the appearance of cracks or failure primers.
  • the report B AT is 1.32; in the second embodiment, illustrated on the Figures 4 to 6 , the report the report B AT is 1.23.
  • the value of the diameter A of the inner seat 14 being as close as possible to that of the diameter C of the outer seat 9 to maximize the width of the seat 14 deployed position of the arch 10, while providing between the periphery of the bottom 6 (diameter C ) and the inner seat 14 (diameter C ) sufficient space to accommodate on the one hand the outer seat 9 (diameter B ) , maximum offset to the periphery of the bottom 6 (which expresses the relationship (1)), and secondly the flexible membrane 11 interposed between the two seats 9 and 14.
  • the report AT VS is 0.74; in the second embodiment, illustrated on the Figures 4 to 6 , the report the report AT VS is 0.80.
  • the value of the axial extension h of the arch 10 in the deployed position must be sufficiently high to allow an appropriate decrease in the volume of the container 1 during the overturning of the vault 10, corresponding to the cumulative volume decreases - due to the cooling - liquid and air present in the head space (defined between the liquid and the cap closing the container).
  • two constraints tend, on the contrary, to minimize the axial extension of the arch 10 in the deployed position: on the one hand, the need, for stability purposes, not to excessively increase the overall height of the container 1; on the other hand, the need to facilitate the inversion of the vault 10.
  • the value of the axial extension h is between one hundredth and one tenth of the value of the diameter C of the bottom 6.
  • the report h VS is 0.08.
  • This exemplary embodiment, where the report h VS is close to the upper limit of the recommended range, corresponds to a case where the depression accompanying in the container the cooling of the liquid may be insufficient to cause the inversion of the vault 10. It can then force the overturning of the vault 10 to using a tool by which one would exert an ascending force on the vault, for example at the level of the pawn 15.
  • the report the report h VS is 0.014.
  • connection fillet between the body 5 of the container 1 and the bottom 6, which forms the outer part of the bead 8 defining the outer seat 9 has a radius r of small curvature with respect to the diameter C, in comparison with a ordinary container.
  • r and C preferably check the following relation: r VS ⁇ 1 100
  • the radius r of the fillet is preferably less than 1 mm.
  • the radius r of the fillet is less than 0.6 mm, and for example 0.5 mm.
  • This technique makes it possible to increase the drawing ratio of the container 1, to the advantage of its mechanical rigidity.
  • boxing makes it possible to increase the drawing ratio of the container 1, to the advantage of its mechanical rigidity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Laminated Bodies (AREA)

Claims (10)

  1. Behälter (1) aus Kunststoff, der einen Körper (5) und einen Boden (6) enthält, welcher sich an einem unteren Ende (7) des Behälters (1) erstreckt, wobei der Körper (5) an der Verbindungsstelle mit dem Boden (6) einen Außendurchmesser C aufweist, wobei dieser Behälter (1) dadurch gekennzeichnet ist, dass der Boden (6) aufweist:
    - eine ringförmige äußere Auflage (9), die eine vorbestimmte Querabmessung B aufweist, derart, dass gilt: 0 , 95 ≤ B C ≤ 1
    Figure imgb0035
    - eine verformbare Wölbung (10), die sich innerhalb der ringförmigen äußeren Auflage (9) erstreckt und die in einer ausgestreckten Stellung nach außerhalb des Behälters (1) vorsteht und eine ringförmige innere Auflage (14) definiert, die eine vorbestimmte Querabmessung A aufweist, derart, dass gilt: 1 , 2 ≤ B A ≤ 1 , 4.
    Figure imgb0036
  2. Behälter (1) nach Anspruch 1, wobei das Verhältnis B C
    Figure imgb0037
     0,98 ist.
  3. Behälter (1) nach Anspruch 1 oder 2, wobei das Verhältnis B A
    Figure imgb0038
     1,32 ist.
  4. Behälter (1) nach Anspruch 1 oder 2, wobei das Verhältnis B A
    Figure imgb0039
     1,23 ist.
  5. Behälter (1) nach einem der Ansprüche 1 bis 4, der in der ausgestreckten Stellung der Wölbung (10) eine axiale Verschiebung h zwischen der äußeren Auflage (9) und der inneren Auflage (14) aufweist, derart, dass gilt: 0 , 01 ≤ h C ≤ 0 , 1.
    Figure imgb0040
  6. Behälter (1) nach Anspruch 5, wobei das Verhältnis h C
    Figure imgb0041
     0,08 beträgt.
  7. Behälter (1) nach Anspruch 5, wobei das Verhältnis h C
    Figure imgb0042
     0,014 beträgt.
  8. Behälter (1) nach einem der Ansprüche 1 bis 7, der an einer Verbindungsstelle zwischen dem Körper (5) und dem Boden (6) eine Anschlusskehle mit einem Radius r aufweist, derart, dass gilt: r C ≤ 1 100 .
    Figure imgb0043
  9. Behälter (1) nach einem der Ansprüche 1 bis 8, wobei die Tangente zum Körper (5) in der Nähe seiner Verbindung mit dem Boden (6) mit einer Hauptachse des Behälters (1) einen Winkel von weniger als 30° bildet.
  10. Behälter (1) nach Anspruch 9, wobei der Körper (5) in der Nähe seiner Verbindung mit dem Boden (6) im Wesentlichen zylindrisch ist.
EP10707074.0A 2009-02-12 2010-02-08 Behälter, dessen boden mit einer flexiblen doppelsitz-wölbung versehen ist Active EP2396246B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0900623A FR2941924B1 (fr) 2009-02-12 2009-02-12 Recipient dont le fond est muni d'une voute flexible a double assise
PCT/FR2010/000088 WO2010092246A1 (fr) 2009-02-12 2010-02-08 Récipient dont le fond est muni d'une voûte flexible à double assise

Publications (2)

Publication Number Publication Date
EP2396246A1 EP2396246A1 (de) 2011-12-21
EP2396246B1 true EP2396246B1 (de) 2013-10-02

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EP10707074.0A Active EP2396246B1 (de) 2009-02-12 2010-02-08 Behälter, dessen boden mit einer flexiblen doppelsitz-wölbung versehen ist

Country Status (7)

Country Link
US (1) US8678213B2 (de)
EP (1) EP2396246B1 (de)
CN (1) CN102317176B (de)
BR (1) BRPI1008056A2 (de)
FR (1) FR2941924B1 (de)
MX (1) MX2011008175A (de)
WO (1) WO2010092246A1 (de)

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
JP6245491B2 (ja) * 2010-10-29 2017-12-13 株式会社吉野工業所 合成樹脂製丸形壜体
US10195781B2 (en) * 2011-03-24 2019-02-05 Ring Container Technologies, Llc Flexible panel to offset pressure differential
EP2703307B1 (de) * 2011-04-28 2016-02-10 Yoshino Kogyosho Co., Ltd. Flasche
JP2013079096A (ja) * 2011-10-04 2013-05-02 Daiwa Can Co Ltd 合成樹脂製容器
US20130098941A1 (en) * 2011-10-25 2013-04-25 Gojo Industries, Inc. Proprietary dispensing container system
FR2989356B1 (fr) * 2012-04-17 2014-04-11 Sidel Participations Recipient comprenant un fond voute a section etoilee
JP6012406B2 (ja) * 2012-10-31 2016-10-25 株式会社吉野工業所 ボトル
JP2015030466A (ja) * 2013-07-31 2015-02-16 株式会社吉野工業所 減圧吸収ボトル
ES2806554T3 (es) * 2014-08-21 2021-02-18 Amcor Rigid Plastics Usa Llc Recipiente con pared lateral plegada
CA2958344C (en) 2014-08-21 2022-04-05 Amcor Limited Two-stage container base
DE102015003514A1 (de) 2015-03-20 2016-09-22 Khs Corpoplast Gmbh Behälter und Blasform
EP3109176A1 (de) * 2015-06-23 2016-12-28 Sidel Participations Behälter mit einer gekrümmten umkehrbaren membran
WO2017035489A1 (en) * 2015-08-27 2017-03-02 Plastipak Packaging, Inc. Plastic container and base portion for plastic container
CN105416744B (zh) * 2015-12-02 2018-04-03 广东星联精密机械有限公司 一种利用底部结构反转增加塑胶瓶内压力的底型结构
EP3257768B1 (de) * 2016-06-17 2019-02-27 Sidel Participations Behälter mit einer konvexen umkehrbaren membran
JP6878079B2 (ja) * 2017-03-27 2021-05-26 株式会社吉野工業所 減圧吸収ボトル
FR3070894B1 (fr) * 2017-09-08 2020-09-11 Sidel Participations Moule pour recipient, comprenant un fond de moule muni d'un puits central, et une tige d'etirage a extremite hemispherique
US11970324B2 (en) 2022-06-06 2024-04-30 Envases USA, Inc. Base of a plastic container

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US3409167A (en) * 1967-03-24 1968-11-05 American Can Co Container with flexible bottom
FR2503665A1 (fr) * 1981-04-09 1982-10-15 Oreal Perfectionnement aux flacons en matiere plastique
US7726106B2 (en) 2003-07-30 2010-06-01 Graham Packaging Co Container handling system
TWI375641B (en) * 2004-12-20 2012-11-01 Co2 Pac Ltd A method of processing a container and base cup structure for removal of vacuum pressure

Also Published As

Publication number Publication date
FR2941924A1 (fr) 2010-08-13
CN102317176A (zh) 2012-01-11
MX2011008175A (es) 2011-09-09
FR2941924B1 (fr) 2011-05-13
US20120037645A1 (en) 2012-02-16
WO2010092246A1 (fr) 2010-08-19
CN102317176B (zh) 2015-03-11
US8678213B2 (en) 2014-03-25
BRPI1008056A2 (pt) 2016-03-15
EP2396246A1 (de) 2011-12-21

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