EP3523208B1 - Fond pétaloïde à vallée brisée - Google Patents

Fond pétaloïde à vallée brisée Download PDF

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Publication number
EP3523208B1
EP3523208B1 EP17783929.7A EP17783929A EP3523208B1 EP 3523208 B1 EP3523208 B1 EP 3523208B1 EP 17783929 A EP17783929 A EP 17783929A EP 3523208 B1 EP3523208 B1 EP 3523208B1
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EP
European Patent Office
Prior art keywords
container
plane
valley
dome
valleys
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
EP17783929.7A
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German (de)
English (en)
French (fr)
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EP3523208A1 (fr
Inventor
Ivan Pierre
Laurent NAVEAU
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
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Sidel Participations SAS
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Publication of EP3523208A1 publication Critical patent/EP3523208A1/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
    • 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

  • This architecture provides the bottom with good mechanical rigidity, including when the container is pressurized, while having good blowability.
  • the internal portion is inclined, with respect to any plane parallel to the plane of the laying ring, towards the inside of the container by an angle less than or equal to 4°.
  • the top of the valley can be offset relative to the laying ring, for example by a value of between 1.5 mm and 3 mm.
  • the obtuse angle formed, in the median radial plane at a primary valley, between the inner portion and the outer portion, is, for its part, of a value preferably between 130° and 175°, and for example of a value of approximately 160°.
  • the obtuse angle formed, in the radial plane median to a secondary valley, between the inner portion and the outer portion, has a value between 130° and 165°, and advantageously from 140° to 145° approximately.
  • The has an overall diameter, all the external portions join the periphery on the same junction plane, and the feet have a height, measured axially between the plane of the ring of laying and said junction plane, the value of which is between 15% and 25%, and preferably approximately 20%, of the overall diameter of the bottom.
  • a container 1 - in this case a bottle - obtained by blow molding or stretch blow molding from a blank, such as a preform made of thermoplastic material, for example polyethylene terephthalate (PET), previously heated.
  • a blank such as a preform made of thermoplastic material, for example polyethylene terephthalate (PET), previously heated.
  • PET polyethylene terephthalate
  • the container 1 extends along a main axis X and comprises a side wall called the body 2 , 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 of generally convex shape towards the outside of the container 1 (that is to say downwards when the container 1 is placed flat).
  • the bottom 3 has a central dome 5 which extends hollow towards the inside of the container 1 (that is to say that the dome 5 has a concavity facing the outside of the container 1 ).
  • the dome 5 has a top 6.
  • the top 6 carries, projecting axially, an injection molded disc, the material of which has remained substantially amorphous during the forming of the container 1.
  • the dome 5 has the particular function of stretching the material at the center of the bottom, so as to increase its crystallinity and therefore its mechanical strength.
  • the dome 5 extends to a peripheral edge 7 (here of substantially circular contour when seen from below) by which it is connected to the wall 4 of the bottom. More precisely, the peripheral edge 7 forms a connection fillet of the dome 5 to the wall 4 of the bottom.
  • the bottom 3 also comprises a series of feet 8 which form protrusions projecting axially from the bottom wall 4 towards the outside of the container 1.
  • the feet 8 extend radially from the central dome 5 (and more precisely from its peripheral edge 7 ), up to a periphery 9 of the bottom 3 where the latter is connected to the body 2.
  • the feet 8 are separated two by two by portions of the bottom wall 4 forming valleys 10 which extend radially in a star shape from the dome 5 to the periphery 9.
  • the valleys 10 extend hollow between the feet 8 which they separate two by two.
  • the valleys 10 are substantially straight when viewed in a plane perpendicular to the main X axis (i.e. in the plane of the FIG.3 ).
  • the valleys 10 are advantageously slightly curved and have a width (measured perpendicular to the radius) which, from the dome 5 to the periphery 9 , first decreases and then increases.
  • the feet 8 are equal in number to the valleys 10.
  • the bottom 3 comprises six feet 8 and six valleys 10 , regularly alternated and distributed in a star. This number is a good compromise; it could, however, be less (but greater than or equal to four), or greater (but preferably less than or equal to ten).
  • Each foot 8 has two substantially plane sides 11 which each laterally border a valley 10. As can be seen on the FIG.7 to FIG.10 , the sides 11 are not vertical (because the bottom 3 would then be difficult or even impossible to blow), but inclined by opening from the valley 10 outwards.
  • Each foot 8 also has a median face 12 which makes the junction between the sides 11. As illustrated in the FIG.3 , seen in a plane perpendicular to the main axis X , the median face 12 extends substantially radially.
  • the median face 12 has a curved profile with a concavity facing the outside of the container 1.
  • each leg 8 extending the median face 12 , forms an end face 13 of the leg 8.
  • the end faces 13 of the legs 8 are coplanar and together form a ring 14 for laying, interrupted and flat section, by which the container 1 can rest on a flat surface (for example a table).
  • the laying ring 14 is connected to the body 2 via a structure having a connecting fillet comprising two parts 8A and 8B , connected at a junction 8C. Said structure will be described in more detail later.
  • the laying ring 14 (shown in this figure by a dot-and-dash circle), is set back radially with respect to the periphery 9.
  • the feet 8 become thinner from the inside towards the outside of the container 1 (that is to say downwards), and widen from the central dome 5 towards the periphery 9.
  • Each valley 10 has an internal portion 15 which extends from the central dome 5 , and an external portion 16 which joins the periphery 9.
  • the overall height of the bottom 3 is defined as being the distance, measured axially, between the plane of the laying ring 14 (in other words the end face 13 ) and the junction plane between the external portions 16 and the periphery 9. As will be indicated later, this height is referenced Q.
  • the internal portion 15 and the external portion 16 are, in section in a radial plane median to the valley 10 , straight and together form an obtuse angle projecting towards the outside of the container 1.
  • the inner portion 15 and the outer portion 16 meet in a vertex 17 located plumb or in the immediate vicinity of the plumb of the laying ring 14 , that is to say that the top can be offset from the laying plane determined by the ring 14.
  • the top 17 is curved in any radial plane, and has a concavity facing the interior of the container 1.
  • the inner portion 15B of the secondary valleys 10B is deeper, when measured axially, than the inner portion 15A of the primary valleys 10A .
  • This difference in depth is clearly visible on the FIG.2 and to the left of the FIG.6 , where the primary valleys 10A are drawn in thin dashed lines while the secondary valleys 10B are drawn in bold solid lines.
  • the bottom 3 may be referred to as a “petaloid bottom” because of its structure consisting of alternating projecting feet 8 and recessed valleys 10 .
  • its low Q height / D diameter ratio disqualifies it for carbonated applications (typically for soft drinks). This ratio is in fact less than or equal to 1/4.
  • a typical petaloid bottom would have such a ratio of about 1/2.
  • the present bottom 3 which can be called a “mini petaloid” because of its low height Q / diameter D ratio, is intended more for applications of the flat liquid type associated with the addition, immediately after filling and before capping , a drop of liquid nitrogen, the vaporization of which puts the contents of the container 1 under overpressure, this overpressure being less than or equal to 1.3 bar.
  • the height Q /diameter D ratio is advantageously between 0.15 and 0.25, and preferably of the order of 0.2.
  • the internal portion 15A is inclined, with respect to any plane parallel to the plane of the laying ring 14 , towards the outside of the container 1.
  • This negative inclination of the portion 15A is called "sloping". internal, advantageously between 2° and 10°.
  • the internal portion 15B is on the contrary inclined, with respect to any plane parallel to the plane of the laying ring 14 , towards the inside of the container 1 .
  • This positive inclination of the internal portion 15B advantageously between 5° and 30°, is called “tilt”.
  • the internal portion 15A of the primary valleys 10A could, like the internal portion 15B of the secondary valleys 10B , be inclined, with respect to any plane parallel to the plane of the laying ring 14 , towards the inside of the container 1 , that is to say in incline, at an angle however less than or equal to 4°.
  • the bottom 3 has, in the example shown, valleys 10A and 10B whose internal portions 15A , 15B are alternately sloping ( FIG.5 ) and forward ( FIG.6 ).
  • the internal portions 15A of the primary valleys 10A open internally on the peripheral edge 7 of the central dome 5
  • the internal portions 15B of the secondary valleys 10B open internally at a distance from the peripheral edge 7 . This configuration increases the mechanical resistance of the bottom 3 when it is under pressure.
  • the internal portions 15B of the secondary valleys 10B open onto the dome 5 at a distance F' from the peripheral edge 7 thereof, between this peripheral edge 7 and the top 6 of the dome.
  • this distance F' is advantageously between 20% and 70% of the total height F of the dome 5 : 0.2 ⁇ F ⁇ F ′ ⁇ 0.7 ⁇ F
  • the distance F' is approximately 60% of the total height F of the dome 5 : F ′ ⁇ 0.6 ⁇ F
  • This configuration makes it possible to obtain a compromise between the structural rigidity of the bottom 3 due in particular to the depth of the internal portions 15B of the secondary valleys 10B , in particular in the vicinity of the center of the bottom 3 , and the good blowability of the latter (c ' that is to say its ability to be correctly formed during the blowing of the container 1), due in particular to the relatively shallow depth of the internal portions 15A in the vicinity of the center of the bottom 3.
  • the outer portion 16 is advantageously inclined, with respect to any plane parallel to the plane of the laying ring 14 , towards the inside of the container 1 , at an angle A.
  • the outer portion 16 is sloping.
  • the angle A of inclination of the outer portion 16 is preferably between 20° and 30°.
  • angles P and P' are obtuse; they are therefore strictly greater than 90° and strictly less than 180°.
  • the angle P is advantageously between 130° and 175°, and preferably around 160°.
  • angle P' illustrated on the FIG.6 , it is advantageously between 130° and 165°, and preferably from approximately 140° to 145°.
  • the width B of the laying ring 14 is advantageously between 0.4 mm and 1 mm, and preferably of the order of 0.5 mm.
  • the radius C of curvature is advantageously equal to approximately half the radius E.
  • the radius E is advantageously between 5 mm and 11 mm. In this case, it follows that the radius C is between 2.5 mm and 5 mm.
  • the center of curvature of the radius E is located vertically to the laying ring 14 .
  • the laying ring 14 is connected to the body 2 by means of a structure having a connecting fillet comprising two parts 8A and 8B.
  • the radius E is that of the first part 8A , which is between the laying ring 14 and the junction 8C between the parts 8A and 8b of the fillet. This radius is constant or can vary very little.
  • the second part 8B of the fillet is between the junction 8C and the periphery 9 of the bottom 3 where the latter is connected to the body 2.
  • This second part 8B has an evolving radius of curvature between the junction 8C and the peripheral edge 9 of the bottom 3.
  • the overall diameter D of the bottom 3 depends on the capacity of the container 1.
  • the diameter D can be approximately 65 mm (in this case, the radius E is advantageously about 6mm).
  • the diameter D can be approximately 90 mm (in this case, the radius E is advantageously approximately 9 mm).
  • the radius E' of the crown is advantageously between 5 mm and 11 mm. It can be equal to the radius E.
  • the radius E' is a function of the capacity of the container 1. For a container 1 with a capacity of 0.5 l, the radius E' can be 6mm approx. For a container 1 with a capacity of 1.5 l, the radius E' can be approximately 9 mm.
  • the height F of the dome 5 is advantageously between 1 mm and 8 mm. In practice, this height F depends on the capacity of the container 1. For a container 1 with a capacity of 0.5 l, the height F can be approximately 2 mm. For a container 1 with a capacity of 1.5 l, the height may be approximately 7.5 mm. In this case, the distance F' is advantageously approximately 4.5 mm.
  • the angle G is advantageously between 20° and 40°. It is recalled that this is the angle considered in a radial plane, between the axis X of the body 2 and the tangent to the first part 8A of the fillet, at the level of the junction 8C between the parts 8A and 8b of this fillet.
  • the angle G is a function of the capacity of the container 1 and, in particular, of its diameter D.
  • the value of the angle G according to the diameter D of the container and the radius E of curvature of the first part 8A of the fillet, determines the position of the junction 8C between the two parts 8A and 8B of the fillet connecting the ring 14 to the body 2.
  • the angle G can be 25° approx.
  • the angle G can be approximately 35°.
  • the distance H is advantageously linked to the overall diameter D of the bottom 3. More precisely, the distance H is preferably between 10% and 15% (and for example approximately 12%) of the diameter D.
  • the diameter J is advantageously between 65% and 75% (and for example approximately 70%) of the diameter D.
  • the distance L is advantageously between 50% and 85% (and for example approximately 70%) of the overall height Q of the bottom 3.
  • the distance M is advantageously a function of the overall diameter D of the bottom 3. More precisely, the distance M is advantageously between 10% and 15% (and for example approximately 12%) of the diameter D.
  • the offset O can be zero and, in this case, the apex 17 is located directly above the laying ring 14 ; it can also be positive (i.e. that the top 17 is offset radially, with respect to the laying ring 14 , towards the outside of the container 1 ), or on the contrary negative (that is to say that the top 17 is offset radially, with respect to the laying ring 14 , towards the inside of the container 1 ). In both cases, the offset value O is small compared to the diameter D.
  • Offset O can be indexed to radius E , e.g. in a ratio of 1 to 3, that is to say that the O/E ratio is approximately 1/3.
  • the offset O is between 1.5 mm and 3 mm.
  • the overall radius T of the dome 5 is advantageously between 5 mm and 15 mm. In practice, this radius T depends on the capacity of the container 1 . For a container 1 with a capacity of 0.5 l, the radius T is thus, for example, approximately 7 mm. For a container 1 with a capacity of 1.5 l, the radius T is eg. approximately 13mm.
  • the angular opening of the sides 11 is variable. More precisely, the angular opening of the sides 11 decreases from the inside towards the outside of the bottom 3 (that is to say from the axis X towards the periphery 9 ), the angular opening S being greater than the angular opening R , which is in turn greater than the angular opening V , itself greater than the angular opening U , which means that the sides 11 are closing from the dome 5 towards the periphery 9.
  • This variation in angular opening makes it possible to widen the feet 8 towards the periphery 9 , to the benefit of the stability of the container 1 , and the resistance of the feet 8 , in particular during the palletization of the container 1.
  • the angle P tends to deform while closing.
  • the flanks 11 which have their greatest height at this location (measured axially, combined with the distance M ), absorb this deformation without deforming too much in turn, so that the general deformation of the bottom 3 is small, and it therefore resists pressure well.
  • the concave shape of the median face 12 as well as the alternation of relatively shallow primary valleys 10A and deeper secondary valleys 10B , seem to contribute to this rigidity.
  • Tests carried out on the container 1 show that the most significant deformations are located on the dome 5 , whose curved shape resists pressure particularly well, while the zones peripheral to the dome 5 (valleys 10 , feet 8 ) undergo only slight deformations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Closures For Containers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
EP17783929.7A 2016-10-06 2017-09-21 Fond pétaloïde à vallée brisée Active EP3523208B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1659634A FR3057246B1 (fr) 2016-10-06 2016-10-06 Fond petaloide a vallee brisee
PCT/FR2017/052530 WO2018065691A1 (fr) 2016-10-06 2017-09-21 Fond pétaloïde à vallée brisée

Publications (2)

Publication Number Publication Date
EP3523208A1 EP3523208A1 (fr) 2019-08-14
EP3523208B1 true EP3523208B1 (fr) 2022-08-10

Family

ID=57485748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17783929.7A Active EP3523208B1 (fr) 2016-10-06 2017-09-21 Fond pétaloïde à vallée brisée

Country Status (6)

Country Link
US (1) US11008129B2 (zh)
EP (1) EP3523208B1 (zh)
CN (2) CN109789944A (zh)
FR (1) FR3057246B1 (zh)
MX (1) MX2019003138A (zh)
WO (1) WO2018065691A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2756736C2 (ru) * 2017-06-12 2021-10-04 Сосьете Де Продюи Нестле С.А. Нижнее основание контейнера, снабженное двояковогнутым сводом
MX2020011255A (es) * 2018-04-26 2020-11-12 Graham Packaging Co Recipiente de relleno presurizado resistente al agrietamiento del anillo de pie.
US10926911B2 (en) * 2018-10-15 2021-02-23 Pepsico. Inc. Plastic bottle with base
DE102021127061A1 (de) * 2021-10-19 2023-04-20 Krones Aktiengesellschaft Kunststoffbehältnis zur Aufnahme von Getränken mit verbesserter Stabilität
US20230166882A1 (en) * 2021-11-30 2023-06-01 Pepsico, Inc. Flexible base for aseptic-fill bottles

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484072A (en) 1994-03-10 1996-01-16 Hoover Universal, Inc. Self-standing polyester containers for carbonated beverages
US5529196A (en) * 1994-09-09 1996-06-25 Hoover Universal, Inc. Carbonated beverage container with footed base structure
FR2822804B1 (fr) 2001-04-03 2004-06-04 Sidel Sa Recipient, notamment bouteille, en matiere thermoplastique dont le fond comporte une empreinte en croix
FR2904809B1 (fr) * 2006-08-08 2008-10-24 Sidel Participations Fond de corps creux obtenu par soufflage ou etirage soufflage d'une preforme en materiau thermoplastique, corps creux comprenant un tel fond
JP5024168B2 (ja) * 2008-03-25 2012-09-12 東洋製罐株式会社 合成樹脂製容器
FR2932458B1 (fr) * 2008-06-13 2010-08-20 Sidel Participations Recipient, notamment bouteille, en matiere thermoplastique equipe d'un fond renforce
FR2967975B1 (fr) 2010-11-25 2012-12-28 Sidel Participations Fond de recipient petaloide combine
DE102012111493A1 (de) * 2012-11-27 2014-05-28 Krones Ag Kunststoffbehältnis mit verstärktem Boden
WO2015099813A1 (en) * 2012-12-27 2015-07-02 Niagara Bottling, Llc Plastic container with strapped base
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
EP2957522B1 (en) * 2014-06-17 2017-05-03 Sidel Participations Container provided with a curved invertible diaphragm

Also Published As

Publication number Publication date
WO2018065691A1 (fr) 2018-04-12
FR3057246B1 (fr) 2022-12-16
CN114313530A (zh) 2022-04-12
US11008129B2 (en) 2021-05-18
FR3057246A1 (fr) 2018-04-13
US20190308764A1 (en) 2019-10-10
CN109789944A (zh) 2019-05-21
EP3523208A1 (fr) 2019-08-14
MX2019003138A (es) 2019-07-18

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