EP2643225B3 - Fond de récipient pétaloïde combiné - Google Patents

Fond de récipient pétaloïde combiné Download PDF

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Publication number
EP2643225B3
EP2643225B3 EP11799768.4A EP11799768A EP2643225B3 EP 2643225 B3 EP2643225 B3 EP 2643225B3 EP 11799768 A EP11799768 A EP 11799768A EP 2643225 B3 EP2643225 B3 EP 2643225B3
Authority
EP
European Patent Office
Prior art keywords
container
base
radius
valley
periphery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11799768.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2643225A1 (fr
EP2643225B1 (fr
Inventor
Michel Boukobza
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.)
Sidel Participations SAS
Original Assignee
Sidel Participations SAS
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Publication date
Application filed by Sidel Participations SAS filed Critical Sidel Participations SAS
Publication of EP2643225A1 publication Critical patent/EP2643225A1/fr
Application granted granted Critical
Publication of EP2643225B1 publication Critical patent/EP2643225B1/fr
Publication of EP2643225B3 publication Critical patent/EP2643225B3/fr
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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
    • B65D1/0284—Bottom construction having a discontinuous contact surface, e.g. discrete feet

Definitions

  • the invention relates to the manufacture of containers, in particular bottles, obtained by blow molding or stretch blow molding from preforms or intermediate containers of thermoplastic material.
  • a container generally comprises an open neck, through which the contents (usually a liquid), a body, which gives the container its volume, and a bottom, which closes the body opposite the neck and forms a base for maintain and hold the container when it is resting on a surface.
  • contents usually a liquid
  • body which gives the container its volume
  • bottom which closes the body opposite the neck and forms a base for maintain and hold the container when it is resting on a surface.
  • Containers for carbonated beverages in which the pressure of the gas dissolved in the liquid induces significant mechanical stresses, are mainly provided with petaloid-shaped bottoms: the bottom comprises projecting feet, in the form of petals, separated by portions of convex wall, called hollows or valleys, which extend radially from a central zone of the bottom.
  • the feet are intended to maintain the container placed on a surface; the valleys are intended to absorb the efforts (thermal, mechanical) exerted by the contents.
  • Such containers are described in European patents EP 0 350 782 and EP 0 703 152 .
  • the performance of a petaloid bottom is measured by its mechanical strength - that is to say its ability to deform in a limited or controlled manner - not only during filling, but also during storage of the container.
  • the storage can be prolonged, and carried out under conditions of temperature and hygrometry severe which one meets exceptionally in the temperate countries but ordinarily in the countries with continental, tropical or desert climate.
  • a plastic container comprising a body and a petaloid bottom extending the body, the bottom comprising a bottom wall of generally convex outward shape, which project feet formed by excrescences, the feet being separated in pairs by portions of the bottom wall forming recessed valleys which extend radially from a central zone of the bottom to a periphery of the bottom, a vessel in which each valley widens from the central zone to the periphery, and has a concave portion located near the periphery.
  • the bottom comprises a radial extension groove dug at the bottom of each valley.
  • Such a container has the advantage of having increased resistance to deformation.
  • there is a good maintenance of the central zone of the bottom under the hydrostatic pressure possibly combined with the pressure of the dissolved gas in the case of a carbonated beverage.
  • Each valley preferably has an angular aperture of between 22 ° and 30 °, for example about 25 °.
  • the concave portion preferably has a radius of curvature between 0.20 ⁇ A and 0.70 ⁇ A (where A is the overall diameter of the bottom), and for example about 0.40 ⁇ A.
  • each foot is preferably provided with an outer face which, in radial section, has a convex profile whose radius of curvature is greater than the overall diameter of the bottom, and for example equal to three times the overall diameter of the bottom. .
  • a container 1 - in this case a bottle-obtained by blow molding or stretch blow from a preform of thermoplastic material, for example polyethylene terephthalate (PET), previously heated.
  • thermoplastic material for example polyethylene terephthalate (PET), previously heated.
  • the container 1 extends along a main axis X and comprises a lateral wall 2 called body, and a bottom 3 which extends and closes the body 2 at a lower end thereof.
  • the bottom 3 is petaloid, and comprises a bottom wall 4 generally shaped convex outwardly of the container 1 (that is to say down when the container is laid flat).
  • the bottom 3 also comprises a series of feet 5 formed by outwardly protruding protrusions of the container 1 , and which extend from a central zone 6 of the bottom 3 in the form of a pellet, where the material has remained substantially amorphous , toward a periphery 7 of the base 3 when the latter is connected to the body 2. Note in the overall diameter of the bottom 3, measured at its periphery 7 ( figure 5 ).
  • the most protruding parts or vertices 8 of the feet 4 are coplanar and together form a seat 9 through which the container can rest on a flat surface (for example a table).
  • a flat surface for example a table.
  • the seat 9 (materialized on the figure 3 by a dashed circle), is located radially recessed relative to the periphery 7.
  • Note B the diameter of the seat 9, and C the total height of the bottom 3, measured axially from the seating plane 9 until at the periphery 7 of the bottom 3, where the latter is connected to the body 2.
  • E the axial extension 10 of the end face (also referred to as boom or bottom of the guard), measured between the seat 9 and the central plane 6 area.
  • H the mean angular aperture of the end face 10, measured in the base plane 9 between two virtual lines joining the axis X at the intersection of the edges 10 of the end face and the circle (diameter B in broken lines in figure 3 ) joining the vertices 8 of the feet 5.
  • the feet 5 are separated in pairs by portions 13 of the bottom wall 4 called valleys, which extend radially in a star from the central zone 6 to the periphery 7.
  • the valleys 13 are concave outwards in cross section (that is to say in a plane perpendicular to the radial direction, cf. figure 4 ).
  • U is the radius of curvature of the valleys 13, measured in cross section. This radius U can be variable. More specifically, it is preferably low near the central zone 6 , and relatively greater near the periphery 7 (see the numerical values in the table below).
  • the feet 5 are equal in number to the valleys 13.
  • the bottom 3 comprises five feet 5 and five valleys 13, regularly alternated and distributed in a star. This number is a good compromise; it could however be less (but greater than or equal to three), or greater (but preferably less than or equal to seven).
  • Each foot 5 has two substantially planar flanks 17 each bordering a valley 13 laterally .
  • the flanks 17 are not vertical (because the bottom 3 would be difficult or impossible to blow), but inclined opening from the valley 13 to the outside.
  • F is the average angular aperture between the flanks 17, which designates the average transverse angular aperture of the valley 13.
  • the flanks 17 are connected to the end face 10 by a fillet 18 whose radius is noted.
  • Each foot 5 is moreover delimited radially by an outer face 19 which extends in the extension of the body 3 to the vicinity of the vertex 8, to which the outer face 19 is connected by a fillet 20 , the measured radius D of which is noted in FIG. a radial plane ( figure 5 ).
  • the outer face 19 is not cylindrical but substantially conical of revolution about the X axis . Moreover, in radial section this face is not straight but convex with a large radius of curvature, noted R (left on the figure 5 ).
  • the face 19 is connected to the body 3 by a leave of which we note Q the radius, measured in a radial plane.
  • the bottom 3 is furthermore provided with radial grooves 22 which extend recess towards the inside of the container 1 , at the bottom and along the valleys 8. More specifically, each groove 22 extends along a median line of a valley 13 , from a neighborhood of the central zone 6 to neighborhood of the periphery 7.
  • Each groove 22 has a plan ( figure 3 ) an oblong shape, whose edges are parallel over most of the length, and whose ends are both tapered. In radial section ( figure 4 ), each groove 22 has a flared U-shaped profile. We note V the depth of the grooves 22.
  • the grooves 22 have the function of stiffening the bottom 3. Under the effect of the mechanical stresses exerted on the container 1 (in particular under the effect of the pressure prevailing in the container filled with a carbonated liquid), the grooves 22 tend flowing by expanding and flattening, which causes an enlargement of the valleys 13 and, consequently, a verticalization of the feet 5 which opposes the overall subsidence of the bottom 3.
  • each valley 13 widens from the central zone 6 towards the periphery 7. This widening is preferably continuous, that is to say that the edges of the valleys 13 form between them an angle at any point not zero.
  • the valleys 13 have a tulip-shaped (or bell-shaped) outline in plan, but this shape is not limiting, and the edges of the valleys 13 could be straight (the valleys 13 then having a contour in V).
  • G the mean angular aperture of the valleys 13, measured in a plane perpendicular to the X axis between two virtual lines (in phantom lines on the figure 3 ) joining the X axis and the radial ends of the lateral edges of the valleys 13.
  • each valley 13 is devoid of branching (especially on the periphery side 7), and thus forms a unitary hollow reserve.
  • M the average axial depth of each valley 13, that is to say the distance, measured parallel to the X axis , between the apex 8 of the feet 5 and the point of the valley 13 situated at the diameter B, at the vertical of vertex 8 (cf. figure 5 ).
  • a preferred range i.e., a minimum value and a maximum value
  • a preferred example of indicative value for each of the parameters E to N and Q to V are summarized in the table below. which can be variable and are for the most part (with the exception of the parameters F , G , H , T and V ) calculated according to one of the parameters A, B and D, which correspond to fixed dimensions imposed by the type (including capacity) of the product container.
  • the height C of the bottom 3 is also a fixed parameter; it is the only independent parameter, that is to say that it does not depend on any other parameter and that none of the other parameters is calculated according to it.
  • Tests have validated these choices by demonstrating the superiority of the mechanical performance of the bottom 3 compared to existing funds.
  • tests conducted by varying the parameters allow to formulate the hypothesis that, if all the parameters have an influence on the mechanical performance of the bottom 3 , it is the combination of the angular aperture (angle G ) of the valleys 13 and the existence of the outer section 15 concave valleys (radius N ) which has a preponderant influence.
  • this combination makes it possible to minimize the axial movements of the central zone 6 .
  • a swelling of the convex section 14 of the valleys 13 under the internal pressure of the container 1 , on the one hand a swelling of the convex section 14 of the valleys 13 , on the other hand a reversal of the concave section 15 which adopts a convex profile in the extension of the section 14 , so that the sections 14 and 15 form in fine a single continuous convex profile (materialized by the dashed lines on the right on the figure 5 ) having a radius P of curvature greater than the radius K of curvature of the section 14 at rest.
  • the value of the radius R obviously contributes (but in a secondary manner with respect to them) to maintain the central zone 6 at a substantially constant height after filling. More precisely, it seems important that the value of the radius R be high: we have chosen it greater than the overall diameter A of the container, and equal to triple of A in the preferred example.
  • This lever effect exerts on the central zone 6 an axial force directed towards the interior of the container 1, which opposes the force resulting from the hydrostatic thrust to which is added the additional pressure due to the dissolved gas, thus limiting the collapse of the central zone 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
EP11799768.4A 2010-11-25 2011-11-22 Fond de récipient pétaloïde combiné Active EP2643225B3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1004588A FR2967975B1 (fr) 2010-11-25 2010-11-25 Fond de recipient petaloide combine
PCT/FR2011/052729 WO2012069759A1 (fr) 2010-11-25 2011-11-22 Fond de récipient pétaloïde combiné

Publications (3)

Publication Number Publication Date
EP2643225A1 EP2643225A1 (fr) 2013-10-02
EP2643225B1 EP2643225B1 (fr) 2017-03-08
EP2643225B3 true EP2643225B3 (fr) 2018-05-23

Family

ID=44232650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11799768.4A Active EP2643225B3 (fr) 2010-11-25 2011-11-22 Fond de récipient pétaloïde combiné

Country Status (7)

Country Link
US (1) US10202221B2 (es)
EP (1) EP2643225B3 (es)
CN (1) CN103269953B (es)
BR (1) BR112013013046A2 (es)
FR (1) FR2967975B1 (es)
MX (1) MX359514B (es)
WO (1) WO2012069759A1 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2967975B1 (fr) 2010-11-25 2012-12-28 Sidel Participations Fond de recipient petaloide combine
US11845581B2 (en) 2011-12-05 2023-12-19 Niagara Bottling, Llc Swirl bell bottle with wavy ribs
DE102012003219A1 (de) * 2012-02-20 2013-08-22 Krones Ag Kunststoffbehältnis
DE102012111493A1 (de) * 2012-11-27 2014-05-28 Krones Ag Kunststoffbehältnis mit verstärktem Boden
CH707262A2 (de) * 2012-11-30 2014-05-30 Alpla Werke Kunststoffbehälter.
BR112015015458A2 (pt) 2012-12-27 2017-07-11 Niagara Bottling Llc recipiente de plástico com base presa
FR3005035B1 (fr) * 2013-04-24 2016-01-15 Sidel Participations Recipient muni d'un fond deformable a double arche
FR3007392B1 (fr) * 2013-06-25 2016-02-05 Sidel Participations Recipient mini petaloide rainure
FR3013335B1 (fr) * 2013-11-15 2016-01-15 Sidel Participations Recipient en matiere thermoplastique a fond de type petaloide a soufflabilite augmentee
FR3022223B1 (fr) * 2014-06-13 2016-06-24 Sidel Participations Recipient muni d'un fond a poutres bourrelees
EP3233645A4 (en) * 2014-12-19 2018-09-26 The Coca-Cola Company Carbonated beverage bottle bases and methods of making the same
FR3032946B1 (fr) 2015-02-23 2017-02-10 Sidel Participations Recipient muni d'un fond mini petaloide a cannelures transversales
FR3057246B1 (fr) 2016-10-06 2022-12-16 Sidel Participations Fond petaloide a vallee brisee
EP3676188A1 (en) * 2017-08-31 2020-07-08 The Procter and Gamble Company Rigid articles having a well-defined corner
FR3074482B1 (fr) * 2017-12-04 2019-10-18 Sidel Participations Recipient a fond petaloide
CN108528899B (zh) * 2018-04-12 2020-01-07 广东星联精密机械有限公司 一种轻量化塑料瓶的瓶底结构
DE102019119984A1 (de) * 2019-07-24 2021-01-28 Krones Ag Kunststoffbehältnis mit Zugbandgeometrie am Bodenbereich

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
AU5625486A (en) * 1985-03-21 1986-10-13 Merimate Ltd. Improvements in or relating to plastics containers
US4867323A (en) * 1988-07-15 1989-09-19 Hoover Universal, Inc. Blow molded bottle with improved self supporting base
US5287978A (en) * 1990-11-15 1994-02-22 Plastipak Packaging, Inc. Plastic blow molded freestanding container
US5615790A (en) * 1990-11-15 1997-04-01 Plastipak Packaging, Inc. Plastic blow molded freestanding container
FR2717443B1 (fr) * 1994-03-16 1996-04-19 Evian Eaux Min Bouteille moulée en matière plastique.
US5529196A (en) * 1994-09-09 1996-06-25 Hoover Universal, Inc. Carbonated beverage container with footed base structure
AU733235B2 (en) * 1996-12-20 2001-05-10 Ball Corporation Plastic container for carbonated beverages
FR2772720B1 (fr) * 1997-12-23 2000-03-17 Sidel Sa Recipient en matiere thermoplastique a fond petaloide
US20040173565A1 (en) * 1999-12-01 2004-09-09 Frank Semersky Pasteurizable wide-mouth container
ITPD20040323A1 (it) * 2004-12-24 2005-03-24 Acqua Minerale S Benedetto Spa Base di bottiglia in materia plastica particolarmente per bevande
FR2892048B1 (fr) * 2005-10-17 2008-01-04 Sidel Sas Fond de moule pour moule de fabrication de recipients thermoplastiques, et dispositif de moulage equipe d'au moins un moule equipe d'un tel fond.
FR2897292B1 (fr) 2006-02-16 2010-06-04 Sidel Participations Fond de moule pour moule de fabrication de recipients thermoplastiques, et dispositif de moulage equipe d'au moins un moule equipe d'un tel fond
US8439214B2 (en) * 2007-03-16 2013-05-14 Plastipak Packaging, Inc. Plastic container with elongated vertical formation
US7891513B2 (en) * 2007-06-08 2011-02-22 Amcor Limited Container base with feet
FR2959214B1 (fr) 2010-04-21 2012-06-29 Sidel Participations Fond de recipient petaloide renforce
FR2967975B1 (fr) 2010-11-25 2012-12-28 Sidel Participations Fond de recipient petaloide combine

Also Published As

Publication number Publication date
MX359514B (es) 2018-10-01
FR2967975A1 (fr) 2012-06-01
MX2013005655A (es) 2013-07-22
US20130264305A1 (en) 2013-10-10
FR2967975B1 (fr) 2012-12-28
CN103269953B (zh) 2015-11-25
US10202221B2 (en) 2019-02-12
BR112013013046A2 (pt) 2016-08-09
EP2643225A1 (fr) 2013-10-02
WO2012069759A1 (fr) 2012-05-31
EP2643225B1 (fr) 2017-03-08
CN103269953A (zh) 2013-08-28

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