EP2580133B1 - Récipient comprenant un fond voûté à assise carrée - Google Patents

Récipient comprenant un fond voûté à assise carrée Download PDF

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Publication number
EP2580133B1
EP2580133B1 EP11735485.2A EP11735485A EP2580133B1 EP 2580133 B1 EP2580133 B1 EP 2580133B1 EP 11735485 A EP11735485 A EP 11735485A EP 2580133 B1 EP2580133 B1 EP 2580133B1
Authority
EP
European Patent Office
Prior art keywords
container
cheek
face
curve
seat
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
EP11735485.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2580133A1 (fr
Inventor
Michel Boukobza
Mikaël DERRIEN
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
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 Sidel Participations SAS filed Critical Sidel Participations SAS
Publication of EP2580133A1 publication Critical patent/EP2580133A1/fr
Application granted granted Critical
Publication of EP2580133B1 publication Critical patent/EP2580133B1/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

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.
  • the manufacture, by blowing, of a container generally consists in introducing into a mold to the imprint of the container a blank (term designating either a preform or an intermediate container obtained by pre-blowing a preform) previously heated to a temperature greater than the glass transition temperature of the material, and to inject into the blank a gas (such as air) under pressure.
  • the blowing can be completed by preliminary stretching of the blank by means of a sliding rod.
  • the double molecular orientation that the material undergoes during blowing gives the container a certain structural rigidity.
  • a technical solution to promote the structural rigidity of a container consists in over-stretching the bottom of the container, by means of a special mold equipped with a mold bottom movable in translation which pushes the material (see in particular the European patent EP 1 069 983 ). Overdrawing induces an increase in the rate of deformation of the material and therefore a mechanical increase in its crystallinity.
  • blowing means the ability of the container to be formed by blowing, or in other words the ability of the material to conform properly to the mold cavity).
  • An object of the invention is to improve, at equal or lower weight and, preferably, at equal or lower blowing pressure, the mechanical performance of a container, while maximizing its blowing.
  • Such a container has increased stability and rigidity, thanks in particular to the combination of the wide seat (in the extension of the body) and the square seat.
  • the axial dimension H of the cheek and the radial dimension L of the laying plane are such that: 0 , 8 ⁇ The H ⁇ 1 , 2
  • the axial dimension of the cheek and the radial dimension of the laying plane are preferably substantially equal.
  • each curve has an arcuate inner edge, which projects over the arch, and lateral edges which may be non-parallel.
  • PET polyethylene terephthalate
  • 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 flaring in the direction opposite to the neck 2 , this shoulder 4 being extended by a side wall or body 5 , of generally cylindrical 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 .
  • the base 6 comprises a seat 7 in the form of a thin annular bead which extends substantially axially in the extension of the body 5 .
  • the seat 7 ends with a continuous annular face which forms the lower end of the container 1 and defines a laying plane 8 perpendicular to the axis of the container 1 , by which the latter can rest stably on a surface S plane ( figure 3 ).
  • the laying plane 8 extends radially over a width L and is connected outwards to an external lateral face 9 of the seat 7 (which extends in the extension of the body) by an outer fillet 10 with a small radius curvature, that is to say of the order of a millimeter.
  • the seat 7 Towards the interior of the container 1 , the seat 7 comprises an annular cheek 11 that extends axially inwardly of the container 1 in the extension of the laying plane 8 , substantially at right angles to it.
  • the laying plane 8 is connected inwardly to the cheek 11 by an inner fillet 12 preferably with a small radius of curvature - less than or equal to about 1 mm.
  • the bottom 6 further comprises a concave arch 13 (with concavity turned towards the outside of the container 1 in the absence of stress, that is to say in the absence of content in the container 1 ), which extends in the extension of the cheek 11 to a central zone 14 of the bottom 6 .
  • the vault 13 is shallow, and its curvature little pronounced.
  • the maximum angle A1 of its tangent with a plane perpendicular to the X axis of the container 1 is small - less than or equal to about 21 °.
  • the bottom 6 comprises, in the extension of the vault 13 , a central pin 15 which extends axially projecting towards the inside of the container 1 .
  • the vault 13 is not connected to the cheek 11 directly, but via a junction face 16 of generally frustoconical shape of revolution about the axis X of the container 1 , whose the angle A2 with a plane perpendicular to the axis X of the container 1 is between 31 ° and 70 °.
  • the cheek 11 extends axially over a height H whose ratio to the width L of the laying plane 8 is between 0.6 and 1.5: 0 , 6 ⁇
  • the L / H ratio is closer to 1, being between 0.8 and 1.2: 0 , 8 ⁇
  • the seat 7 has in section a substantially square profile, as is visible on the figures 4 , 6 , 9 and 12 .
  • the result for the container 1 on the one hand, a good rigidity and good stability both during filling and during its palletization and, secondly, a good blowing.
  • the rigidity is the best when these dimensions are substantially equal, but the performance granted by a ratio L over H between 0.6 and 1.5 are good.
  • the wide seat 7 the diameter of the laying plane 8 is substantially equal to that of the body 5 in the vicinity of the bottom 6 , combined with the small radius of the outer leave 10 , provides the container 1 a better stability than conventional seat whose diameter of the laying plane is substantially less than the diameter of the body, and whose leave high radius promotes the rolling of the bottom.
  • the container 1 can be manufactured by stretch blow molding from a plastic preform such as PET.
  • a plastic preform such as PET.
  • the roof 13 is smooth and is in the form of a spherical cap.
  • the w / o ratio is about 0.68:
  • junction face 16 is smooth, and is limited to a truncated cone whose angle A2 is relatively pronounced, its value being about 65 °, thus giving the vicinity of the seat 7 a good structural rigidity.
  • the relative simplicity of shape of the bottom 6 gives it a good puffability, which allows to blow the container 1 at a moderate pressure, less than or equal to 25 bars.
  • the vault 13 is provided with a series of stiffeners 17 in the form of projecting branches which extend radially from the central zone 14 of the bottom 6 to the cheek 11 , and which together form a star pattern.
  • the stiffeners 17 are connected to the central zone 14 of the bottom 6 by an inner radial end 18 and are connected to the flange 11 by an outer radial end 19 .
  • the stiffeners 17 are 8, but this number is provided as an example and could be different. More precisely, this number can be between 4 and 12; for purposes of mechanical strength, it is preferably between 6 and 10.
  • the height, the width and the shape of the stiffeners 17 may vary according to the applications.
  • the stiffeners 17 may be straight or arcuate in the shape of a Y pointing either towards the center or towards the periphery of the bottom, or in the form of X.
  • the stiffeners 17 have an inverted Y profile, and have, on the half of their length about a 20 right in the inner portion of substantially constant width, which is extended by an external portion 21 inverted V, which widens since the inner portion 20 towards the outer end 19 .
  • the vault 13 defines panels 22 recessed whose profile is complementary to that of the stiffeners 17 .
  • Each stiffener 17 has a concave lower face 23 which extends in the extension of the surface of the central zone 14 and two lateral edges 24 which form fillets 25 , 26 for connecting the lower face 23 with the recessed panels 22 .
  • the edges 24 are double radius, and comprise a first fillet 25 convex profile, which is flush with the lower face 23 , followed by a second fillet 26 concave profile, which is flush with the panel 22 .
  • the central zone 14 of the bottom 6 is reduced to the pin 15 , which on its periphery delimits the internal ends 18 of the stiffeners 17 .
  • the peg 15 has a star-shaped profile, the internal ends 18 of the stiffeners 17 being thinned while being bevelled.
  • leaves 27 are provided at the outer ends 19 of the stiffeners, to ensure their connection with the face 16 of junction, on the one hand, and with the cheek 11 , on the other hand.
  • the ratio L / H is substantially equal to 1:
  • the bottom 6 is reinforced by means of a peripheral series of curves 28 each formed radially inwards projecting, on the face 16 of junction between the cheek 11 and the roof 13 , between the outer ends 19 of two adjacent stiffeners 17 .
  • the curves 28 are convex in the direction of the axis X of the container 1 and locally reverse the curvature of the face 16 .
  • the curves 28 also have the effect of locally modifying the angular aperture A2 of the face 16 .
  • the curve 28 has the effect of decreasing the angular aperture A2 of the face 16 : approximately 45 ° outside the curve 28 (FIG. figure 6 ), the angle A2 is about 35 ° in a median radial plane to the curve 28 (corresponding to the section plane VII-VII).
  • the lateral edges 31 deviate from each other towards the inside of the container 1 and form a closed angle, less than 45 ° (in this case about 31 °).
  • the outer edge 30, arcuate outwardly of the container 1, beyond (at least) partially on the cheek 11.
  • the curve 28 has the effect of decreasing rather weakly the angular aperture A2 of the face 16: approximately 45 ° outside the curve 28 ( figure 9 ), the angle A2 is about 40 ° in a median radial plane to the curve 28 (corresponding to the cutting plane XX).
  • the lateral edges 31 are spaced apart from each other towards the outside of the container 1 , and form an angle close to 60 °.
  • the outer edge 31 of the curve 28 extends almost entirely on the cheek 11 .
  • the curve 28 has, along its outer edge 31 , a recess 32 , so that the curve 28 has the effect of substantially increasing the angular aperture A2 of the face 16: about 45 ° to the outside the curve ( figure 12 ), the angle A2 is about 55 ° in a median plane with the curve 28 (corresponding to the plane of section XIII-XIII).
  • the presence of the stiffeners 17 increases the rigidity of the vault 13 , and reduces the risk of subsidence of the bottom 6 under the effect of a load such as that to which the palletized containers are subjected.
  • the stiffeners 17 by their shape, act in the manner of struts, ensuring a radial recovery of the axial forces exerted on the roof 13 by the hydrostatic pressure of the contents of the container 1 .
  • the stiffeners 17 bearing against the cheek 11 at their ends, the radial recovery of the forces results in a permanent centrifugal radial stress exerted by the stiffeners 17 on the seat 7 via the cheek 11 , which contributes to stiffen the seat 7 , notably by preventing its ovalisation.
  • Curves 28 have two main functions.
  • a first function of the curves 28 is to increase the rigidity of the bottom at the junction between the arch 13 and the seat 7 between the stiffeners 17 ;
  • a second function is to compensate for the degradation of the bottom blowing 6 due to the presence of the stiffeners 17 .
  • the material reaches first impressions corresponding to the side edges 24 of the stiffeners 17 , where it tends to freeze locally before reaching the seat 7 .
  • a tension of the material between the stiffeners 17 , at the junction face 16 and the seat 7 facilitates, thanks to the inversion local of the curvature of the junction face 16 and the offset generated by the recess 32 , the impression of the material between the stiffeners 17 , both at the face 16 and the seat 7 .
  • blowing pressure can be maintained at a value of less than 28 bars, and in practice between 20 bars and 28 bars.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP11735485.2A 2010-06-11 2011-06-14 Récipient comprenant un fond voûté à assise carrée Not-in-force EP2580133B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1002486A FR2961181B1 (fr) 2010-06-11 2010-06-11 Recipient comprenant un fond voute a assise carree
PCT/FR2011/051338 WO2011154671A1 (fr) 2010-06-11 2011-06-14 Récipient comprenant un fond voûté à assise carrée

Publications (2)

Publication Number Publication Date
EP2580133A1 EP2580133A1 (fr) 2013-04-17
EP2580133B1 true EP2580133B1 (fr) 2017-03-15

Family

ID=43128214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11735485.2A Not-in-force EP2580133B1 (fr) 2010-06-11 2011-06-14 Récipient comprenant un fond voûté à assise carrée

Country Status (7)

Country Link
US (1) US9598206B2 (es)
EP (1) EP2580133B1 (es)
CN (1) CN102933465B (es)
BR (1) BR112012031640A2 (es)
FR (1) FR2961181B1 (es)
MX (1) MX349726B (es)
WO (1) WO2011154671A1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2987034B1 (fr) * 2012-02-16 2014-06-20 Sidel Participations Recipient aplati comprenant un fond voute a assise carree
FR3003793B1 (fr) * 2013-03-27 2015-07-10 Sidel Participations Recipient a socle renforce et procede de fabrication d’un tel recipient
EP2957522B1 (en) * 2014-06-17 2017-05-03 Sidel Participations Container provided with a curved invertible diaphragm
USD804311S1 (en) * 2015-07-27 2017-12-05 Rapid Pure, Inc. Bottle base
US9988177B1 (en) 2015-08-03 2018-06-05 Rapid Pure Inc Bottle with filter and infusion base
USD811893S1 (en) * 2016-12-21 2018-03-06 Misty Mate, Inc. Personal cooling apparatus
DE102022115361A1 (de) * 2022-06-21 2023-12-21 Optipack Gmbh Verpackungsbehälter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090159556A1 (en) * 2003-05-23 2009-06-25 Amcor Limited Container base structure responsive to vacuum related forces

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525401A (en) * 1979-11-30 1985-06-25 The Continental Group, Inc. Plastic container with internal rib reinforced bottom
US4515284A (en) * 1980-08-21 1985-05-07 Reynolds Metals Company Can body bottom configuration
FR2729640A1 (fr) * 1995-01-23 1996-07-26 Evian Eaux Min Bouteille en matiere plastique ecrasable a vide par compression axiale
US6277321B1 (en) 1998-04-09 2001-08-21 Schmalbach-Lubeca Ag Method of forming wide-mouth, heat-set, pinch-grip containers
US7398894B2 (en) * 2003-11-24 2008-07-15 Metal Container Corporation Container bottom, method of manufacture, and method of testing
US20050139572A1 (en) * 2003-12-29 2005-06-30 Pedmo Marc A. Plastic container
FR2883550B1 (fr) 2005-03-23 2007-06-15 Sidel Sas Recipient, notamment bouteille, en materiau thermoplastique
JP4642601B2 (ja) * 2005-08-23 2011-03-02 株式会社吉野工業所 ボトル
US7780025B2 (en) * 2005-11-14 2010-08-24 Graham Packaging Company, L.P. Plastic container base structure and method for hot filling a plastic container
US7732035B2 (en) * 2006-03-07 2010-06-08 Plastipak Packaging, Inc. Base for plastic container
FR2919579B1 (fr) * 2007-07-30 2011-06-17 Sidel Participations Recipient comprenant un fond muni d'une membrane deformable.
US20090283494A1 (en) * 2008-05-14 2009-11-19 Tablecraft Products Company Easy clean refillable bottle and dispensing cap
FR2932458B1 (fr) * 2008-06-13 2010-08-20 Sidel Participations Recipient, notamment bouteille, en matiere thermoplastique equipe d'un fond renforce
EP2662297B1 (en) * 2008-11-27 2015-09-23 Yoshino Kogyosho Co., Ltd. Synthetic resin bottle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090159556A1 (en) * 2003-05-23 2009-06-25 Amcor Limited Container base structure responsive to vacuum related forces

Also Published As

Publication number Publication date
MX2012014197A (es) 2013-02-21
US20130153530A1 (en) 2013-06-20
FR2961181B1 (fr) 2012-07-27
WO2011154671A1 (fr) 2011-12-15
US9598206B2 (en) 2017-03-21
MX349726B (es) 2017-08-10
CN102933465B (zh) 2014-09-24
BR112012031640A2 (pt) 2016-11-08
EP2580133A1 (fr) 2013-04-17
CN102933465A (zh) 2013-02-13
FR2961181A1 (fr) 2011-12-16

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