WO2010092246A1 - Récipient dont le fond est muni d'une voûte flexible à double assise - Google Patents
Récipient dont le fond est muni d'une voûte flexible à double assise Download PDFInfo
- Publication number
- WO2010092246A1 WO2010092246A1 PCT/FR2010/000088 FR2010000088W WO2010092246A1 WO 2010092246 A1 WO2010092246 A1 WO 2010092246A1 FR 2010000088 W FR2010000088 W FR 2010000088W WO 2010092246 A1 WO2010092246 A1 WO 2010092246A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- ratio
- seat
- junction
- outer seat
- Prior art date
Links
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
- B65D1/0276—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”
- treatment by which the container is maintained barely formed in contact with the heated mold wall at a temperature between 120 ° C and 250 0 C, for a predetermined time (usually a few seconds).
- 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 2006/06851 1 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 invention provides a plastic container, comprising a body and a bottom extending at a lower end of the container, the body having, at the junction with the bottom, an outer diameter C, container in which the background presents: - an annular outer seat having a predetermined transverse dimension B such that:
- a deformable arch which extends inside the annular outer seat and which, in an extended position, projects outwardly of the container and defines an annular inner seat having a transverse dimension A predetermined such as:
- 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 ratio - is for example 0.98.
- the ratio - is
- the ratio - 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:
- the ratio - is
- the ratio - is
- the container preferably has, at a junction between the body and the bottom, a connection fillet having a radius r such that:
- 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.
- Figure 1 is a sectional elevational view showing a container according to a first embodiment
- Figure 2 is a detail view showing the bottom of the container of Figure 1, in an extended position
- Figure 3 is a view similar to Figure 2, showing the bottom in a retracted position
- Figure 4 is a sectional elevational view showing a container according to a second embodiment
- - Figure 5 is a detail view showing the bottom of the container of Figure 4, in an extended position
- Figure 6 is a view similar to Figure 5, showing the bottom in a retracted position.
- FIGS. 1 and 3 show two embodiments of a container 1 - in this case a wide-necked bottle - made by stretch-blow molding from a thermoplastic preform such as PET (polyethylene terephthalate).
- 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 to a lower end of the container 1 in the extension of the body 5.
- the body 5 is in a lower part 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 its handling on the line of production).
- 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 vault 10 is deformable, and can adopt two positions, namely: an extended position, represented in FIGS. 2 and 5, in which the vault 10 extends at least in part projecting with respect to the external seat 9 towards the outside of the container 1 (that is to say opposite the collar 2),
- a retracted position shown in Figures 3 and 6, wherein the arch 10 extends projecting from the outer seat 9 towards the interior of the container 1 (that is to say towards the neck) .
- 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 In this way, the membrane 11 and the medial 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 interior 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 axis
- 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:
- 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. Note that in the exemplary embodiments illustrated, the ratio - is about 0.98.
- 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 following relation which proposes to correlate the extension h to the diameter C of the bottom 6 while maintaining the ratio of these two dimensions in a predetermined range, offers a good compromise between these contradictory constraints: (4) 0.01 ⁇ ⁇ 0, l
- 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 - is 0.08.
- This embodiment, where the ratio - 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 inversion of the vault 10 by means of a tool by which it would exert an ascending force on the vault, for example at the level of the pin 15.
- the ratio the ratio - is 0.014. In this second embodiment, where
- the ratio - is close to the lower limit of the recommended range, corresponds to the case where the depression accompanying in the container the cooling of the liquid is sufficient to cause the overturning of the vault 10 without it being necessary to force this reversal by means of of a tool.
- the 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 an ordinary container.
- the dimensions r and C preferably check the following relation:
- 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.
- a stretch-blow molding technique in a mold comprising a side wall defining a lower opening and a movable mold bottom relative to the wall of the mold between: a low position, adopted at the beginning of blowing, in which the mold bottom is spaced from the opening downwards, and a high position, adopted at the end of blowing, in which the mold bottom closes the opening and pushes up the material of the bottom 6 of the container 1.
- 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.
Landscapes
- 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)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2011008175A MX2011008175A (es) | 2009-02-12 | 2010-02-08 | Recipiente cuyo fondo esta provisto de un arco flexible de doble asiento. |
BRPI1008056A BRPI1008056A2 (pt) | 2009-02-12 | 2010-02-08 | recipiente cujo fundo é munido de uma abóbada flexível com dupla base |
CN201080007321.4A CN102317176B (zh) | 2009-02-12 | 2010-02-08 | 底部配设有具有双底的柔性拱顶的容器 |
EP10707074.0A EP2396246B1 (fr) | 2009-02-12 | 2010-02-08 | Récipient dont le fond est muni d'une voûte flexible à double assise |
US13/148,201 US8678213B2 (en) | 2009-02-12 | 2010-02-08 | Container in which the base is provided with a double-seated flexible arch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR09/00623 | 2009-02-12 | ||
FR0900623A FR2941924B1 (fr) | 2009-02-12 | 2009-02-12 | Recipient dont le fond est muni d'une voute flexible a double assise |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010092246A1 true WO2010092246A1 (fr) | 2010-08-19 |
Family
ID=41050848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2010/000088 WO2010092246A1 (fr) | 2009-02-12 | 2010-02-08 | Récipient dont le fond est muni d'une voûte flexible à double assise |
Country Status (7)
Country | Link |
---|---|
US (1) | US8678213B2 (fr) |
EP (1) | EP2396246B1 (fr) |
CN (1) | CN102317176B (fr) |
BR (1) | BRPI1008056A2 (fr) |
FR (1) | FR2941924B1 (fr) |
MX (1) | MX2011008175A (fr) |
WO (1) | WO2010092246A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012096798A (ja) * | 2010-10-29 | 2012-05-24 | Yoshino Kogyosho Co Ltd | 合成樹脂製丸形壜体 |
JP2013079096A (ja) * | 2011-10-04 | 2013-05-02 | Daiwa Can Co Ltd | 合成樹脂製容器 |
AU2012248279B2 (en) * | 2011-04-28 | 2016-08-25 | Yoshino Kogyosho Co., Ltd. | Bottle |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10195781B2 (en) * | 2011-03-24 | 2019-02-05 | Ring Container Technologies, Llc | Flexible panel to offset pressure differential |
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 (fr) | 2014-08-21 | 2022-04-05 | Amcor Limited | Base de recipient a deux etages |
DE102015003514A1 (de) | 2015-03-20 | 2016-09-22 | Khs Corpoplast Gmbh | Behälter und Blasform |
EP3109176A1 (fr) * | 2015-06-23 | 2016-12-28 | Sidel Participations | Récipient muni d'un diaphragme réversible incurvé |
WO2017035489A1 (fr) * | 2015-08-27 | 2017-03-02 | Plastipak Packaging, Inc. | Récipient en plastique et partie de base pour récipient en plastique |
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 (fr) * | 2016-06-17 | 2019-02-27 | Sidel Participations | Récipient muni d'un diaphragme réversible convexe |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2503665A1 (fr) * | 1981-04-09 | 1982-10-15 | Oreal | Perfectionnement aux flacons en matiere plastique |
WO2006068511A1 (fr) | 2004-12-20 | 2006-06-29 | Co2Pac Limited | Procede de traitement de la structure d'un recipient et de son embase pour evacuer une pression a vide |
US20070051073A1 (en) | 2003-07-30 | 2007-03-08 | Graham Packaging Company, L.P. | Container handling system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3409167A (en) * | 1967-03-24 | 1968-11-05 | American Can Co | Container with flexible bottom |
-
2009
- 2009-02-12 FR FR0900623A patent/FR2941924B1/fr not_active Expired - Fee Related
-
2010
- 2010-02-08 EP EP10707074.0A patent/EP2396246B1/fr active Active
- 2010-02-08 WO PCT/FR2010/000088 patent/WO2010092246A1/fr active Application Filing
- 2010-02-08 BR BRPI1008056A patent/BRPI1008056A2/pt not_active IP Right Cessation
- 2010-02-08 US US13/148,201 patent/US8678213B2/en active Active
- 2010-02-08 CN CN201080007321.4A patent/CN102317176B/zh active Active
- 2010-02-08 MX MX2011008175A patent/MX2011008175A/es active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2503665A1 (fr) * | 1981-04-09 | 1982-10-15 | Oreal | Perfectionnement aux flacons en matiere plastique |
US20070051073A1 (en) | 2003-07-30 | 2007-03-08 | Graham Packaging Company, L.P. | Container handling system |
WO2006068511A1 (fr) | 2004-12-20 | 2006-06-29 | Co2Pac Limited | Procede de traitement de la structure d'un recipient et de son embase pour evacuer une pression a vide |
US20080298938A1 (en) * | 2004-12-20 | 2008-12-04 | David Murray Melrose | Method of Processing a Container and Base Cup Structure for Removal of Vacuum Pressure |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012096798A (ja) * | 2010-10-29 | 2012-05-24 | Yoshino Kogyosho Co Ltd | 合成樹脂製丸形壜体 |
AU2012248279B2 (en) * | 2011-04-28 | 2016-08-25 | Yoshino Kogyosho Co., Ltd. | Bottle |
JP2013079096A (ja) * | 2011-10-04 | 2013-05-02 | Daiwa Can Co Ltd | 合成樹脂製容器 |
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 |
CN102317176B (zh) | 2015-03-11 |
US8678213B2 (en) | 2014-03-25 |
BRPI1008056A2 (pt) | 2016-03-15 |
EP2396246A1 (fr) | 2011-12-21 |
EP2396246B1 (fr) | 2013-10-02 |
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