EP2125533A2 - Bouteille en plastique a fond champagne et son procede de fabrication - Google Patents
Bouteille en plastique a fond champagne et son procede de fabricationInfo
- Publication number
- EP2125533A2 EP2125533A2 EP07871900A EP07871900A EP2125533A2 EP 2125533 A2 EP2125533 A2 EP 2125533A2 EP 07871900 A EP07871900 A EP 07871900A EP 07871900 A EP07871900 A EP 07871900A EP 2125533 A2 EP2125533 A2 EP 2125533A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- dome
- grooves
- thickness
- bottle
- bottle according
- 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.)
- Granted
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
- B65D1/0284—Bottom construction having a discontinuous contact surface, e.g. discrete feet
Definitions
- the present invention relates to a champagne-type bottle, that is to say the bottom has a dome having an outwardly oriented concavity, which is intended in particular, but not exclusively, to contain a carbonated beverage . More particularly, the invention relates to a plastic bottle comprising a body extending longitudinally along a central axis from a neck to a lower end and having a predetermined thickness, and a bottom, said bottom comprising a connected skirt.
- a continuously rounded concavity dome facing outward and extending from the peripheral support zone to a vertex located substantially on the central axis, and grooves having a bottom and extending radially between the skirt and the dome to define between them feet of the peripheral support zone.
- the grooves have a longitudinal bottom line extending on the bottom of said grooves in their direction of radial elongation.
- domes provided with reinforcing grooves are known, for example documents FR-A-2 300 707 and WO-A-03/091117.
- Champagne bottoms therefore have the disadvantage of having a relatively high weight due to the presence of a relatively thick dome to withstand a given internal pressure.
- the present invention therefore aims to optimize the bottom of a bottle, either to withstand a higher pressure to constant weight, or to reduce the weight of a current bottom for a given drink.
- the subject of the present invention is a bottle of the aforementioned type, characterized in that the line The bottom of the grooves has a direction forming a pronounced angle with the direction tangent to the dome at the outlet of the bottom of said grooves in the dome.
- the bottom of the grooves connected at an angle to the dome can be used to transmit radial forces on the periphery of the skirt, which would limit the possibility of flattening the dome and avoid the dome turns sometimes noted.
- the side walls of the grooves form flanges substantially perpendicular to the dome and extending over the height of a lower portion thereof, which would create reinforcements similar to ribs.
- the grooves open into a lower part of the dome delimited vertically, compared to a part top of the dome, by the outlet of the bottom of said grooves.
- the annular lower portion of the dome has a thickness substantially equal to the predetermined thickness of the body, while the upper portion of the dome has a minimum thickness significantly greater than said predetermined thickness. This results in a weight saving thanks to the combined effect of grooves reinforcing this lower part of the dome.
- the variation in thickness between the annular lower part and the upper part of the dome is of course not discontinuous, but with a certain progressivity.
- the thickness of the upper part may be substantially variable and in particular increasing towards the apex which corresponds to the point of injection of the preform.
- the thickness of the lower portion does not vary significantly, of the order of a few tens of percent, and reaches a value almost equal to the predetermined thickness at the feet of the support zone, unlike Champagne funds of the prior art for which one seeks a significant thickness in this area of support to strengthen it.
- the angle formed between the direction of the bottom of the grooves and the direction tangent to the dome at the outlet is between 90 degrees and 150 degrees, and is preferably equal to 120 degrees; indeed, an angle greater than 150 degrees should not sufficiently block the top of the dome while an angle less than 90 degrees would result in a greater material use without improving the resistance to pressure;
- the bottom line of the grooves has a curved profile with a radius of curvature increasing from the skirt to the dome; so as to form a more pronounced angle at the outlet in the dome than at the outlet in the skirt;
- the minimum thickness of the upper part of the dome is equal to at least twice the predetermined thickness, and preferably approximately equal to three times said predetermined thickness; which makes it possible to confer sufficient resistance to this part in which the plastic is less stretched, but without, however, excessively increasing the bottom;
- the thickness of the upper part of the dome varies in a range from one to three times the minimum thickness, in order to avoid the accumulation useless plastic material, especially towards the summit;
- the top of the dome has a recessed pint of concavity oriented outwardly, which promotes the spreading of the preform around the central axis to better distribute the plastic on the upper part of the dome;
- the height of the grooves at the outlet in the dome is between 30 and 60% of the height of the dome measured on its outer face, and preferably about 40%; which allows a good compromise between economy of material, resistance to pressure and aesthetic appearance;
- the bearing zone comprises feet having, in radial section, a rounded profile of radius of curvature which is clearly smaller than the minimum radius of curvature of the dome and which extends circumferentially over a major part of the periphery of the support zone; the small radius of curvature of the feet increasing their resistance to the support force on a support and their cumulative circumferential length distributing this contact force.
- thermo-blowing the preform in the mold with a drawing rod in contact with the bottom of the mold is carried out; preform, and characterized in that one adjusts the parameters of thermo-blow and advance of the drawing rod so as to obtain a thickness in the lower annular portion of the dome substantially equal to the predetermined thickness of the body of the bottle and a minimum thickness of the upper part of the dome significantly larger than said predetermined thickness.
- thermo-blow Thanks to the use of standard preform and the increasing possibilities of setting parameters of thermo-blow, it is particularly easy to switch from a production of bottles according to the invention to a conventional production, or to manage these two types of production on a site, for example to produce a natural water declined with different degrees of fizzing.
- FIG. 1 is a partial front view of a bottle made according to the invention
- FIG. 2 is a view from below of FIG. 1;
- FIG. 3 is a perspective view from below of FIG. 1 and
- FIG. 4 is a sectional view taken along the line IV-IV of FIG. 2.
- FIG 1 is partially shown a bottle for containing a carbonated beverage.
- This bottle comprises a body 1 which extends longitudinally along a central vertical axis Z between an upper end connected to a neck provided with a closure system, not shown, and a lower end Ib.
- the lower end of the body Ib corresponds to at the height of the body from which its section decreases to form a bottom 2.
- the body 1 has a uniform circular section, but it could include reliefs or grooves and therefore a section that is not constant over its entire height .
- the body 1 is formed by a thin wall of plastic, such as for example a polyester and more particularly PET.
- the body 1 has a thickness e1 hereafter called "predetermined thickness", which is relatively small in order to save the plastic material.
- the predetermined thickness is 0.4 mm, but it could vary substantially depending on the internal pressure and the dimensions of the bottle.
- this thickness can vary between 0.3 and 0.5 mm. It's about a body of cylindrical section with a diameter of about 75 mm, but it could be an oval or polygonal section.
- the bottom 2 comprises a skirt 3 connected to the lower end Ib tangent thereto.
- the skirt 3 extends downwards to a peripheral support zone 5, visible in FIG. 2, on which the bottle is intended to rest in a vertical position.
- the outer diameter of the skirt 3 decreases from the lower end Ib to the bearing zone 5 so that it has a diameter of about 30% less than the diameter of the body 1. This decrease is here continuous and according to the profile of a curve, which favors its resistance to pressure.
- the central portion of the bottom 2 comprises a dome 7 whose apex 7a is centered on the axis Z.
- This dome 7 has the overall shape of a hemisphere.
- the base 7b of the dome connected to the peripheral support zone 5 takes a shape a little more curved than an ideal sphere.
- the dome 7 has a continuous rounded profile, except possibly in a region limited to the vertex 7a as explained below, and preferably with a symmetry of revolution about the Z axis. Indeed, discontinuities or marked changes of direction in the wall of the dome would not allow it to resist the deformations and transmit the pressure supported to the bearing zone 5.
- Grooves 9 extend in a radial direction relative to the central axis Z between the skirt 3 and the dome 7, so that they define between them feet 11 of the peripheral support zone 5. In the embodiment shown, these grooves 9 are six in number, but their number could be odd and vary between three and a dozen.
- each foot 11 has a rounded radial profile of constant thickness.
- the rounded profile of the feet 11 has a small radius of curvature, much lower than the minimum radius of curvature of the dome, which allows them to resist without deformation at higher pressures than a flat bearing area.
- the circumferential width of the grooves 9 is constant over their radial elongation and less than the circumferential width of the feet 11 arranged between them.
- the set of feet 11 extends circumferentially over a major part of the periphery of the bearing zone 5 on which the weight of the bottle rests.
- the cross section of the grooves 9 has the shape of a V with a rounded bottom. Therefore, it is possible to define on these grooves a bottom 9a in the form of a line shown in broken lines in FIGS. 1 to 3. On either side of this bottom line 9a extend lateral walls (9b , 9c) grooves. It would be the same with grooves having a profile "U".
- each groove 9 opens into the dome 7 at a zone 9d said outlet.
- This outlet 9d is defined as a zone, and not a point, since each groove 9 is connected to the dome 7 by a radius of curvature connection profile r, and not a sharp angle. This of course for the purpose of not creating stress concentrations. But it will be noted that this radius of curvature r is very small, especially with respect to the radius of curvature of the rounded bottom line 9a of the grooves or the dome 7, and more than ten times less than these radii. Thus, when considering the bottom 9 of a groove and the wall of the dome 7 in this outlet area 9d, these form an angle a. between them, regardless of the radius of curvature of the connection.
- the direction D of the bottom line 9a of a groove 9 forms with the tangent to the dome T, oriented towards the central axis Z, a pronounced angle ⁇ at the outlet 9d, that is to say at the ends of the radius connecting profile r connecting these zones.
- pronounced angle is meant an angle of at least a few tens of degrees greater than a closed angle and less than a flat angle.
- this angle ⁇ is between 90 degrees and 150 degrees, and preferably about 120 degrees, as in the embodiment shown.
- the set of outlets 9d of the groove bottoms defines a virtual line 7c, shown in broken lines in FIGS. 2 to 3.
- This separation line 7c delimits the dome 7 at a lower portion 15 extending to the zone d peripheral support 5, and an upper portion 16 extending from this line 7c to the top 7a of the dome.
- the lower part 15 therefore corresponds to an annular surface into which the grooves 9 open.
- each of the grooves 9 forms a rigid spacer extending up to the periphery of the skirt 3, which would block the dome 7 radially at the separation line 7c, and thus avoid flattening the upper part 16. Such a blocking could not be obtained with funds from groove tangentially connected to the dome, or by a large radius of curvature.
- the side walls (9b, 9c) form wings substantially perpendicular to the lower part of the dome 15 and large width from their connecting line, unlike wings that would widen in the case of connected grooves tangentially to the dome.
- This arrangement of the grooves 9 does not increase the weight of the bottom 2 relative to the front bottom having a thick dome, but increases the resistance to the internal pressure. The ratio of pressure resistance to bottom weight is thus increased.
- the profile of the bottom lines 9a of the grooves is not necessarily rectilinear to play this role of spacer transmitting the forces. Indeed, as in the embodiment shown, it may be advantageous to provide that the bottom lines 9a of the grooves extend longitudinally along a curved line having a radius of curvature increasing from the skirt 3 to the dome 7, that is that is analogous to the form of a comma. This allows a more tangential connection of the grooves 9 at the top of the skirt 3 where the depth of the grooves decreases. While the profile of bottom lines 9a of the grooves is closer to a straight line at the dome 7.
- this arrangement of the grooves 9 may advantageously be combined with a judiciously chosen local reduction in the thickness of the dome 7 to also obtain a reduction in the weight of the bottom 2.
- the bottom of the dome 15 has a substantially constant thickness, which is very much less than the average thickness of the upper part 16 of the dome, and even the minimum thickness e 2 of this upper part.
- the thickness e15 of the lower portion of the dome is substantially constant and approximately equal to the predetermined thickness e 1 of the body wall.
- the thickness of the skirt 3, but also the feet 11 of the peripheral support zone 5 and the wall of the grooves 9, is also substantially constant and equal to the predetermined thickness el of the body.
- This provision which can be observed by a transparency beyond the separation line 7c that is almost identical to the transparency of the body, allows a substantial gain in the weight of the bottom 2 for a given pressure resistance.
- This gain is sensitive when the thickness e15 of the lower part 15 is at least less than twice the minimum thickness e2 of the upper part 16.
- a good compromise is obtained in the embodiment shown with a thickness el5 of the lower part 15 is approximately equal to one-third of the minimum thickness e2 of the upper part 16.
- the minimum thickness e2 of the upper part 16 of the dome 7 is approximately equal to three times the predetermined thickness e1 of the body 1.
- the weight of the bottom 2 by saving the material used to form the upper part 16 of the dome, and this by limiting the maximum thickness of the upper part of the dome with respect to its minimum thickness e2.
- the weight of the upper part 16 of the dome is highly optimized.
- a hollow stud 17 concavity oriented outwardly as the dome.
- the stud 17 forms a recess relative to the rounded overall profile of the dome 7, but it does not decrease the pressure resistance of the dome 7 as a whole since the thickness of material is still important in this central zone of low stretch.
- thermo-blowing mainly consists of preheating a preform, placing it in a mold with the shapes of the bottle and of dimensions much greater than the preform, injecting a hot gas at a temperature, a pressure and a determined flow, while accompanying or even assisting the expansion of the preform with a drawing rod in contact with the bottom of the preform.
- These operations are performed in a more or less complex sequence and providing for a more or less significant cooling of the mold.
- the adjustment of these parameters during testing and production can be done accurately through an increasingly sophisticated computer control.
- the fact of using a standard preform has the particular advantage of simplifying the implementation of the production of bottles according to the invention, and possibly the return to a production of other types of bottle. This also allows, in addition to the economies of scale on the purchase of preforms, a simpler management of the supply and stocks on a production site where are bottled different drinks more or less carbonated, and which therefore require bottles with different pressure strengths.
- the bottle produced according to the invention can be perfectly suitable for non-gaseous liquids, such as for example flat water, which can be packaged under pressure and create a very high pressure wave on the bottom in case of drop of the bottle.
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07871900T PL2125533T3 (pl) | 2006-12-21 | 2007-12-10 | Butelka z tworzywa sztucznego z dnem typu "szampan" oraz sposób jej wytwarzania |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0611225A FR2910438B1 (fr) | 2006-12-21 | 2006-12-21 | Bouteille en plastique a fond champagne et son procede de fabrication. |
PCT/FR2007/052468 WO2008078033A2 (fr) | 2006-12-21 | 2007-12-10 | Bouteille en plastique a fond champagne et son procede de fabrication |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2125533A2 true EP2125533A2 (fr) | 2009-12-02 |
EP2125533B1 EP2125533B1 (fr) | 2012-10-03 |
Family
ID=38229039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07871900A Not-in-force EP2125533B1 (fr) | 2006-12-21 | 2007-12-10 | Bouteille en plastique a fond champagne et son procede de fabrication |
Country Status (9)
Country | Link |
---|---|
US (1) | US8485375B2 (fr) |
EP (1) | EP2125533B1 (fr) |
CN (1) | CN101616843B (fr) |
DK (1) | DK2125533T3 (fr) |
ES (1) | ES2396260T3 (fr) |
FR (1) | FR2910438B1 (fr) |
MX (1) | MX2009006883A (fr) |
PL (1) | PL2125533T3 (fr) |
WO (1) | WO2008078033A2 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2904808B1 (fr) * | 2006-08-08 | 2011-03-04 | Sidel Participations | Fond de corps creux obtenu par soufflage ou etirage soufflage d'une preforme en materiau thermoplastique, corps creux conprenant un tel fond |
US7861879B2 (en) | 2008-05-02 | 2011-01-04 | Orbis Corporation | Folding container |
US20120100266A1 (en) | 2010-10-20 | 2012-04-26 | Pepsico., Inc. | Control of bubble size in a carbonated liquid |
AU2011321582B2 (en) * | 2010-10-26 | 2016-03-03 | Yoshino Kogyosho Co., Ltd. | Bottle |
DE102013101332A1 (de) * | 2013-02-11 | 2014-08-14 | Krones Ag | Kunststoffbehältnis |
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 |
US10858138B2 (en) * | 2014-12-19 | 2020-12-08 | The Coca-Cola Company | Carbonated beverage bottle bases and methods of making the same |
USD819446S1 (en) * | 2015-10-09 | 2018-06-05 | The Coca-Cola Company | Bottle |
US10836531B2 (en) * | 2016-11-04 | 2020-11-17 | Pepsico, Inc. | Plastic bottle with a champagne base and production methods thereof |
JP7241456B2 (ja) * | 2017-03-07 | 2023-03-17 | サントリーホールディングス株式会社 | アセプティック充填用ボトル |
JP2020523261A (ja) | 2017-06-12 | 2020-08-06 | ソシエテ・デ・プロデュイ・ネスレ・エス・アー | 二重凹状アーチが設けられている容器底部ベース |
JP2017206313A (ja) * | 2017-07-12 | 2017-11-24 | ザ コカ・コーラ カンパニーThe Coca‐Cola Company | プラスチックボトル |
CA3096654A1 (fr) * | 2018-05-11 | 2019-11-14 | Mark Woloszyk | Base de pression de recipient |
US10926911B2 (en) | 2018-10-15 | 2021-02-23 | Pepsico. Inc. | Plastic bottle with base |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
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US3871541A (en) * | 1973-02-26 | 1975-03-18 | Continental Can Co | Bottom structure for plastic containers |
US3935955A (en) * | 1975-02-13 | 1976-02-03 | Continental Can Company, Inc. | Container bottom structure |
JPS55110415U (fr) * | 1979-01-26 | 1980-08-02 | ||
JPS5821373Y2 (ja) * | 1979-01-10 | 1983-05-06 | 株式会社吉野工業所 | 二軸延伸させた合成樹脂製肉薄壜 |
US4267144A (en) * | 1979-07-03 | 1981-05-12 | The Continental Group, Inc. | Process of reducing blowing cycle for blow molded containers |
US4249667A (en) * | 1979-10-25 | 1981-02-10 | The Continental Group, Inc. | Plastic container with a generally hemispherical bottom wall having hollow legs projecting therefrom |
NL8006687A (nl) * | 1979-12-13 | 1981-07-16 | Shigeto Aoki | Bodemconstructie voor houders van kunststof. |
USRE36639E (en) * | 1986-02-14 | 2000-04-04 | North American Container, Inc. | Plastic container |
US4978015A (en) * | 1990-01-10 | 1990-12-18 | North American Container, Inc. | Plastic container for pressurized fluids |
US5198248A (en) * | 1990-03-05 | 1993-03-30 | Continental Pet Technologies, Inc. | Blow mold for forming a refillable polyester container |
US5615790A (en) * | 1990-11-15 | 1997-04-01 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
US5064080A (en) * | 1990-11-15 | 1991-11-12 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
US5452815A (en) * | 1992-06-08 | 1995-09-26 | Yuan Fang Limited | Base configuration for biaxial stretched blow molded pet containers |
US5320230A (en) | 1992-06-08 | 1994-06-14 | Yuan Fang Limited | Base configuration for biaxial stretched blow molded pet containers |
FR2717443B1 (fr) * | 1994-03-16 | 1996-04-19 | Evian Eaux Min | Bouteille moulée en matière plastique. |
FR2730471B1 (fr) | 1995-02-09 | 1997-04-25 | Sidel Sa | Recipient, tel que bouteille, a fond autostable et procedes pour sa fabrication |
USD471452S1 (en) * | 1996-12-06 | 2003-03-11 | Stokely-Van Camp, Inc. | Bottle |
USD409919S (en) * | 1997-06-17 | 1999-05-18 | Plastipak Packaging, Inc. | Bottle |
US6019236A (en) * | 1997-09-10 | 2000-02-01 | Plastipak Packaging, Inc. | Plastic blow molded container having stable freestanding base |
JP2000128140A (ja) * | 1998-10-20 | 2000-05-09 | Aoki Technical Laboratory Inc | ポリエステル樹脂による耐熱性包装用容器 |
US20030196926A1 (en) * | 2001-04-19 | 2003-10-23 | Tobias John W. | Multi-functional base for a plastic, wide-mouth, blow-molded container |
US6569376B2 (en) * | 2001-04-13 | 2003-05-27 | Schmalbach-Lubeca Ag | Process for improving material thickness distribution within a molded bottle and bottle therefrom |
US6769561B2 (en) * | 2001-12-21 | 2004-08-03 | Ball Corporation | Plastic bottle with champagne base |
EP1497189B1 (fr) | 2002-04-25 | 2006-05-17 | Alpla-Werke Alwin Lehner GmbH und Co.KG | Bouteille en plastique |
ES2298697T3 (es) | 2004-10-05 | 2008-05-16 | Sidel Participations | Recipiente de material termoplastico. |
-
2006
- 2006-12-21 FR FR0611225A patent/FR2910438B1/fr not_active Expired - Fee Related
-
2007
- 2007-12-10 CN CN2007800501037A patent/CN101616843B/zh not_active Expired - Fee Related
- 2007-12-10 PL PL07871900T patent/PL2125533T3/pl unknown
- 2007-12-10 US US12/520,455 patent/US8485375B2/en not_active Expired - Fee Related
- 2007-12-10 ES ES07871900T patent/ES2396260T3/es active Active
- 2007-12-10 EP EP07871900A patent/EP2125533B1/fr not_active Not-in-force
- 2007-12-10 WO PCT/FR2007/052468 patent/WO2008078033A2/fr active Application Filing
- 2007-12-10 MX MX2009006883A patent/MX2009006883A/es active IP Right Grant
- 2007-12-10 DK DK07871900.2T patent/DK2125533T3/da active
Non-Patent Citations (1)
Title |
---|
See references of WO2008078033A2 * |
Also Published As
Publication number | Publication date |
---|---|
PL2125533T3 (pl) | 2013-06-28 |
US8485375B2 (en) | 2013-07-16 |
FR2910438A1 (fr) | 2008-06-27 |
DK2125533T3 (da) | 2013-01-14 |
ES2396260T3 (es) | 2013-02-20 |
EP2125533B1 (fr) | 2012-10-03 |
FR2910438B1 (fr) | 2010-12-10 |
CN101616843B (zh) | 2011-11-30 |
US20100032404A1 (en) | 2010-02-11 |
CN101616843A (zh) | 2009-12-30 |
MX2009006883A (es) | 2009-10-05 |
WO2008078033A3 (fr) | 2008-11-13 |
WO2008078033A2 (fr) | 2008-07-03 |
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