EP3154864B1 - Fond renforcé pour des bouteilles ou des flacons en matière plastique - Google Patents

Fond renforcé pour des bouteilles ou des flacons en matière plastique Download PDF

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Publication number
EP3154864B1
EP3154864B1 EP15727405.1A EP15727405A EP3154864B1 EP 3154864 B1 EP3154864 B1 EP 3154864B1 EP 15727405 A EP15727405 A EP 15727405A EP 3154864 B1 EP3154864 B1 EP 3154864B1
Authority
EP
European Patent Office
Prior art keywords
bottle
dome
base
rim
wall
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
EP15727405.1A
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German (de)
English (en)
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EP3154864A1 (fr
Inventor
Satvinder DHILLON
Christopher Clarke
Paulo Jose Ferreira CORREIA
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.)
Suntory Holdings Ltd
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Suntory Holdings Ltd
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Publication date
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Priority to PL15727405T priority Critical patent/PL3154864T3/pl
Publication of EP3154864A1 publication Critical patent/EP3154864A1/fr
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Publication of EP3154864B1 publication Critical patent/EP3154864B1/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
    • B65D1/0276—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
    • 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
    • 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
    • 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
    • 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
    • B65D2501/00—Containers having bodies formed in one piece
    • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • B65D2501/0018—Ribs
    • B65D2501/0036—Hollow circonferential ribs
    • 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
    • B65D2501/00—Containers having bodies formed in one piece
    • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • B65D2501/0081—Bottles of non-circular cross-section

Definitions

  • the present invention relates to a reinforced base for a plastics bottle according to the preamble of claim 1 and to a plastics bottle comprising such a base.
  • These bottles or flasks are, for example, those made of plastic material, obtained by Injection Stretch Blow Moulding (ISBM) or other similar techniques intended to contain liquids under pressure, their bodies ending at its lower part by a reinforced bottom and at its top portion by an outlet for pouring the liquid contents, which can be plugged.
  • ISBM Injection Stretch Blow Moulding
  • bottles are often filled under vacuum conditions to increase the fill rate of the containers on a production line.
  • a vacuum or partial vacuum
  • liquid can then be dispensed into the evacuated interior, allowing rapid filling without needing to simultaneously allow air to escape.
  • the requirement for the bottles to be able to withstand this pressure differential during filling is easily met.
  • a container such as a bottle
  • vacuum and overpressure is not only dependent on the geometrical configuration of the bottle and materials of construction, but also on its absolute size.
  • bottle sizes increase for a given geometrical form, they become less able to withstand such pressure differentials.
  • there is more design freedom in the shape of smaller bottles e.g. those typically designed to hold less than about one litre of liquid
  • larger bottles e.g. one litre and above.
  • smaller bottles can be designed with so-called "champagne" bases (i.e.
  • petaloid bases do not have the required aesthetic appeal.
  • US Patent 3468443 describes a plastic disposable bottle having a base adapted to resist internal pressure.
  • WO2013/156710 A1 discloses a plastics container, according to the preamble of claim 1, with a conical arch extending into its base to define in cross-section a star-shaped profile inscribed between two circles, wherein a ratio of the diameters of the two circles is greater than or equal to 0.7.
  • the profile surrounds an inner, circular region and is surrounded by an annular region which is surrounded in turn by a downwardly facing, annular rim on which the bottle stands.
  • champagne-type bases may be used on larger plastic bottles, whilst withstanding the overpressure required during production and transport. It is also amongst the objects of the invention to be able to reduce the amount of material used in manufacture of the bottle, thereby reducing costs and environmental impact whilst retaining the desired technical properties.
  • the invention also has amongst its aims a reduction in raw material costs, an increased production rate and making the body geometry independent from the bottom geometry. Therefore, the reinforced bottom according to the present invention has a configuration that allows a reduction in the wall thickness of the bottle or flask.
  • the reinforced bottom according to the present invention also allows an increase in the bottle or flask production rate, since the configuration of the reinforced bottom allows a greater heat dissipation and, therefore, a higher manufacturing rate is obtained.
  • the reinforced bottom also allows complete freedom of the geometry of the bottle or flask body wall. This is especially so when the improved side wall features of the bottle are simultaneously employed.
  • the invention provides a reinforced base for a plastics bottle as defined in claim 1.
  • Optional features are set out in the dependent claims.
  • the provision of the polygonal or circular formations add to the strength of the dome structure, whilst retaining the rim required of a champagne-style bottle base. Keeping the formations away from the abutment of the rim and the dome prevents deformation of the rim during manufacture, and when the bottle is under pressure.
  • Ranges for the area of each of the dome regions are as follows:
  • Said inner region of the dome comprises between 2.5% and 10% of the area of the dome, and preferably is also free of said geometrical configurations. By keeping this area free of the geometrical configurations, centring of the bottle pre-form in the mould prior to moulding is facilitated.
  • said geometrical configurations occupy at least 30% of the area of said middle region of the dome. Provision of this density of geometrical configurations makes it easier to provide the required additional strength to the dome of the bottle. In further preferred embodiments, the configurations occupy at least 35%, 40%, 45%, 50%, 55% or even 60% of the area of said middle region of the dome.
  • each of said geometrical configurations is in the form of a tessellating regular polygon. This makes it easier to pack the configurations onto the surface of the dome.
  • tessellating regular polygons There are only three tessellating regular polygons: the triangle, square and hexagon. Hexagonal polygons are particularly preferred, as they have the largest internal angle, of 120°, as opposed to 60° and 90° for triangles and squares respectively, which therefore reduces stress in the polymer material.
  • Such geometrical configurations may be formed by e.g. including wall features separating then polygonal or circular features. However, it is particularly preferred that said geometrical configurations comprise, or consist of, an indented region. In this way, the wall thickness of the base can be kept more even across the base of the bottle, and less material is used in its construction.
  • the depth of said indented region is at least 0.5mm.
  • said geometrical configuration comprises a region surrounded by a wall.
  • the polygonal or circular formations are so sized that a circle enclosing each polygonal or circular formation has a diameter of less than 50% of the width of the middle annular region. In this way, at least about three of the formations may be spaced apart in an offset fashion over the radius of the middle annular region, allowing forces to be spread between the formations. As for a minimum size, it is preferred that said enclosing circle is no less that about 10% or 20% or 30% of the width of the middle annular region. For sizes smaller than this, the additional structural strength is low, but the likelihood of stress formation increases.
  • said rim is of a curved profile, having a radius of curvature of at least 1mm. This further reduces the stress on the base structure when exposed to pressure differentials. By contrast, the presence of a sharp corner, or a flat rim can readily lead to deformation under pressure.
  • plastics bottle comprising a base as described herein.
  • said bottle comprises a wall extending from the rim of the base to a neck region at the top of the bottle; wherein said wall is provided with a circumferential reinforcement to resist deformation of the bottle under vacuum and said wall is of convex cross-section between said reinforcement and said rim.
  • An appropriate degree of convexity may be determined by the skilled address by trial and error, in order to provide a balance between the vacuum-resisting properties of the convex wall portion, and the ease of moulding.
  • a smaller radius of curvature would lead to increased resistance to vacuum forces, but would produce a more "bulbous" shape to the bottle wall, which might be more difficult to mould, and might not suit any aesthetic requirements.
  • the minimum radius of curvature should be greater than the distance between said first reinforcement and the rim. A radius equal to half such a distance would give a wall section that meets the rim and reinforcement at right angles; a smoother transition is to be preferred.
  • r>0.5L such as r>0.6L, or r>0.8L or r>1L.
  • r may be up to about 2L, i.e. within the range 0.5L ⁇ r ⁇ 2L.
  • said wall is provided with a second such circumferential reinforcement and wherein said wall is of convex cross-section between said first and second reinforcements.
  • an appropriate degree of convexity may be chosen as above, related to the distance between the two circumferential reinforcements (i.e. defining L to be this separation distance).
  • Figure 13A-E illustrates a range of convexities that might be employed for the wall portions 16, 19 described in more detail below.
  • the radius of curvature is given by r, and the distance between either end of the wall portion is given by L.
  • Such a reinforcement could comprise a thickening of the bottle wall, but, in either case, it is further preferred that said reinforcement is in the form of a groove, or valley in the bottle wall. This provides the required structural stability by virtue of the geometry without the need for additional plastics material for manufacturing the bottle.
  • the capacity of the bottle is one litre. It is envisaged that this base design will be appropriate for bottles having a capacity of at least 1, or 1.5, or 2, or 2.5 or 3 or even 5 litres.
  • a reinforced base for a plastics bottle, or a bottle comprising such a base substantially as described herein with reference to and as illustrated any appropriate combination of the accompanying drawings.
  • Figure 1 illustrates, in cross-sectional view, a reinforced base, generally indicated by 1, for a plastics bottle, according to an embodiment of the invention.
  • the side walls of the bottle are also illustrated. Tick lines extending from the bottle and base delineate the various sections of the bottle and base.
  • the base 1 has an annular rim 2 on which the bottle can rest, in use, and which connects the wall 8 of the bottle to the rest of the base.
  • the base 1 is provided with a concave dome 3 with the concavity facing the outside of the bottle.
  • the dome 3 comprises three regions: an outer, annular region 4, that lies adjacent the rim 3; an inner, circular region 5, at the centre of the dome; and a middle, annular region 6 that lies between the outer 4 and inner 5 regions.
  • the middle region 6 is provided with a plurality of spaced apart geometrical configurations 7 that serve to reinforce the dome 3.
  • the indentations have a depth illustrated by the arrows A-A'. In preferred embodiments of the invention, the depth of the indentations is at least 0.5mm, typically between about 0.5mm and 3mm, for example about 1mm.
  • Figure 3 is a plan view of the underside of a reinforced bottle base 1 of the invention to illustrate the various regions of the structure.
  • the figure illustrates the position of the rim 2, as well as the outer 4 and middle 6 annular regions, and the central circular region 5.
  • the geometrical configurations are not illustrated, for clarity. It should be stressed that the regions do not denote physically separate parts of the bottle base, but merely serve to indicate where certain structural features should be located.
  • Figure 4 illustrates, in plan view, the underside of a reinforced bottle base 1 of the invention with geometrical configurations 7 located on the middle annular region 6.
  • the configurations 7 are circular in shape, and are all of the same size. It can be seen that the outer annular region 4 is free of geometrical configurations. Some areas 10 of the middle annular region 6 are also left free of geometrical configurations, and these may be conveniently used for placement of indicia, such as recycling information, mould numbering, and manufacturer's logos.
  • Figures 5 and 6 illustrate, in plan view, the underside of reinforced bottle bases 1 of the invention.
  • the outer 4, inner 5 and middle 6 regions of the dome are indicated, as well as the rim 2 of the bottle base.
  • These embodiments are of bottles that also have convex wall portion 9, and this can also be seen in the illustrations.
  • Like elements to embodiments described above are similarly numbered.
  • Figure 7 illustrates, again in plan view, the underside of a particularly preferred embodiment of a reinforced base 1 of the invention. Again, like elements to those already described are similarly numbered.
  • the geometrical comfigurations 7 are in the form of regular hexagonal indentations. within the centre region 5 of the dome the position of the injection mould point 11 for the bottle pre-form can also be seen.
  • Figures 8 and 9 illustrate, in elevation and cross-section respectively, an embodiment of a bottle of the invention, generally indicated by 12.
  • the bottle 12 is provided with a reinforced base 1, according to the invention and additional wall features to resist deformation of the bottle under vacuum.
  • the bottle 12 is provided with a first circumferential reinforcement 13 located approximately one sixth of the way up the bottle from the base 1 to the neck region 14.
  • the reinforcement is in the form of a circumferential indentation, or groove 15 in the side wall 8 of the bottle.
  • the portion 16 of the wall 8 that lies between the rim 2 and the first circumferential reinforcement 13 is of a convex, bulbous shape, forming an arched structure. This allows that portion of the wall to resist deformation of the wall in the face of an internal vacuum in the bottle. This allows fewer reinforcements to be used that would otherwise be required to provide equivalent strength in the face of vacuum forces, allowing for a more simplified mould, and greater opportunities for label placement.
  • a second such circumferential reinforcement 17 is also provided, approximately half way between the base 1 and the neck region 14 of the bottle 12. Again, this reinforcement is in the form of a circumferential indentation, or groove 18 in the side wall 8 of the bottle.
  • the portion 19 of the wall 8 that lies between the first 13 and second 17 circumferential reinforcements is also of a convex, bulbous shape, forming a second arched structure to resist deformation in the face of an internal vacuum.
  • the upper region 20 of the bottle is of conical shape.
  • FAA finite element analysis
  • Figure 10A is a model of a reinforced base 1 of the invention having regular hexagonal indentations disposed over the middle 6 and central 5 regions of the dome 3, whilst the outer annular region 4 is free of such geometrical configurations.
  • Figure 10B is a model of a reinforced base 1 of the invention having regular hexagonal indentations disposed only within the middle region 6 of the dome 3.
  • Figures 10C-10F are not embodiments of the invention, but represent alternative designs.
  • the base of Figure 10C has a concave dome region 3 within which is a secondary concave dome 20 of smaller dimension.
  • Six radial valleys 21 are located on the surface of the dome 3, each of which communicates at one end with the secondary concave dome 20, and ends short of the rim 2 at the other end.
  • a further six radial valleys 22 are located on the base, each of which communicates at one end with the concave dome 3, and extending onto the rim 2 of the base at the other end.
  • Figure 10D is a model of a standard petaloid base having six feet portions 23, each separated by valley regions 24 extending into the side wall of the bottle.
  • Figure 10E is a model of a reinforced base having a rim 2, and a domed region 3.
  • a secondary dome 20 is provided within the main dome.
  • Six radial valleys 21 are located on the surface of the dome 3, each of which communicates at one end with the secondary concave dome 20, and ends short of the rim 2 at the other end.
  • Figure 10F is a model of a reinforced base having a rim, and a domed region 3.
  • a secondary dome 20 is provided at the centre of the main dome.
  • Five radial valleys 21 extend across the base, communicating at one end with the secondary dome, and extending across the dome 3 and rim 2 and terminating on the side wall 8 of the bottle.
  • a further five radial secondary valleys 22 are provided, interspaced with the first valleys, and extending at one end from a point within the main dome 3, across the rim 2, and into the side wall 8 of the bottle.
  • FEA simulations were performed on each of these models, using parameters representing a bottle manufactured in PET (Polyethylene terephthalate) having a density of 1.336 g.cm -3 , an elastic Modulus of 2500 MPa, a Poisson Ratio of 0.4, and a yield stress of 106MPa.
  • the bottle shape attached to each base was as illustrated in Figures 8 and 9 , and simulated to have a volume of 1.5litres. Simulations were carried out to assess to performance of the reinforced bases in the face of a within-bottle pressure of 1bar and 1.5bar (100 and 150 kPa respectively). In each case, the simulations assumed an identical mass of polymer (53.5g).
  • an 850ml version of a champagne-style PET plastics bottle was scaled up using the improved base feature.
  • the original 850ml bottle, having a base feature as illustrated in Figure 10E could be manufactured using a preform weight of 48g, and was able to withstand the required pressure differential of 150kPa. If the bottle were scaled up to 1.5litres capacity using the same base design, it was shown that the base design provided too much deflection when under pressure (see results table above). By contrast, the improved design B provided acceptable performance, with a much lower base deflection under pressure, using a preform weight of 52.9g.
  • the surface areas of the two sizes of bottle were 600 cm 2 and 870 cm 2 for the 850ml and 1500ml bottles respectively.
  • the 1500ml bottle using the improved design had a PET use of only 60.7 mg.cm 2 as opposed to 74.9 mg.cm 2 , and still achieved the required pressure resistance, even at the larger size.
  • a reinforced bottom for bottles or flasks made of plastic material, obtained preferably by Injection Stretch Blow Molding (ISBM) or other similar techniques, intended to contain liquids under pressure, which comprise a body 8 which extends between a neck, at its top portion, and a reinforced bottom 1, at its lower portion, said reinforced bottom 1 being adapted to support, without significant deformation, an internal pressure of up to 300 kPa, preferably from 100 kPa to 200 kPa, in addition to the weight of the liquid contained in said bottle or flask, comprising a rim 2, constituted by a substantially annular portion, which bounds inside it a dome 3.
  • ISBM Injection Stretch Blow Molding
  • said dome 3 has a plurality of geometrical configurations 7, which are defined by closed polygonal formations, and wherein said geometrical configurations occupy, at least, 80 to 90% of the surface of said dome 3.
  • the said polygonal formations 7 have a triangular, quadrangular or rounded cross section.
  • the wall portions bounded by polygonal formations 7 are concave, convex or flat.
  • the dome 3 is rounded.
  • the reinforced bottom comprises a rim whose wall is constituted by a substantially annular portion, which defines interiorly a concave dome, whose concavity faces the outside of the bottle or flask, the wall of said rim extending toward the neck throughout the wall of the bottle or flask body.
  • Said rim can be of any suitable shape adapted to the shape of the bottle or flask, and does not interfere with the geometry of the body wall of said bottle or flask.
  • the reinforced bottom Due to its great resistance, the reinforced bottom provides enhanced dimensional stability to the bottle or flask.
  • the concave dome, bounded by said rim may be shaped by a plurality of geometrical configurations, bounded by closed polygonal formations. Said closed polygonal formations conform ribs, which act as reinforcing and heat dissipation elements.
  • the closed polygonal formations define in its interior wall portions, which may be flat, convex or concave, according to the application of the bottle or flask or the pressure to which it is intended to support.
  • Said closed polygonal formations preferably have a cross section, triangular, quadrangular, trapezoidal, rounded or any other suitable configuration.
  • the reinforced bottom is configured to allow the bottle or flask bears, with a negligible change of shape and external volume, in addition to the weight of the liquid contained therein, an internal pressure of between up to 300 kPa, preferably from 100 kPa to 200 kPa.
  • EP 1705124 B1 discloses a reinforced bottom. As can be seen from the attached drawings to this patent, the described reinforced bottom further presents reinforcing ribs in a reduced number, and which define geometrical figures formed by open polygonal formations, which reinforcement capacity of the bottom is much lower than the reinforcement capacity of the present invention. Its heat dissipation capacity is also much lower than the heat dissipation capacity of the reinforced bottom in accordance with the present invention. Unlike the reinforced bottom of the present invention, the bottom of the bottle described in EP 1705124 B1 can only be used in Extrusion Blow Molding (EBM).
  • EBM Extrusion Blow Molding
  • EP 2133277 B1 discloses a reinforced bottom for a bottle, which, although in respect to the pressure to be supported and to manufacture rate, have a similar performance to the reinforced bottom of the present invention, the geometry of the reinforced bottom described in this patent determines the geometry of the body of the bottle or flask, this feature being of particular importance for the industry, in particular as regards the production of bottles or flasks of plastic material.
  • the reinforced bottom 1 comprises a rim 2, constituted by a substantially annular portion with the shape as shown in the figures, which delimits inside a rounded dome 3, generally concave, with the concavity facing the outside of the bottle body 8, the upper wall of the rim 2 extending throughout the wall of the bottle or flask 8 body. Said rim 2 allows said bottle to rest stably on a substantially horizontal surface.
  • the dome 3 has a plurality of hexagonal configurations 7, which are defined by ribs 25.
  • the portions of inner wall of the hexagonal configurations 7, bounded by the ribs 25. may be concave, convex or flat.
  • Said ribs 25 have a quadrangular cross-sectional shape. Said ribs 25 occupy at least 80 to 90% of the surface of said dome 3.
  • Said ribs 25 are intended to reinforce said bottom 1 and to allow optimum heat dissipation during the manufacturing process of said bottle.
  • the configuration of said reinforced bottom 1 also allows that the manufacturing process of the bottle 12, according to the present invention, due to the optimum dissipation achieved by the reinforced base 1, is performed at higher rates than currently obtainable with generality of the bottoms of prior art and/or allows that the body geometry is independent from the bottom geometry.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Claims (14)

  1. Base renforcée [1] pour une bouteille en plastique, ladite base comprenant :
    (a) un rebord annulaire [2] sur lequel repose la bouteille ;
    (b) un dôme concave [3] délimité par ledit rebord, la concavité faisant face à l'extérieur du corps de la bouteille ; ledit dôme ayant une aire totale et comprenant trois régions :
    (i) une région annulaire extérieure [4], adjacente audit rebord ;
    (ii) une région circulaire intérieure [5], au centre dudit dôme ; et
    (iii) une région annulaire médiane [6], entre lesdites régions extérieure et intérieure ;
    (c) une pluralité de configurations géométriques espacées [7] sous la forme de formations polygonales ou circulaires fermées situées sur ladite région annulaire médiane du dôme ;
    CARACTÉRISÉE EN CE QUE
    ladite région circulaire intérieure [5] comprend de 2,5% à 10% de la superficie totale du dôme, ladite région annulaire médiane [6] comprend de 60% à 90% de la superficie totale du dôme, et ladite région annulaire extérieure (4) comprend de 7,5% à 30% de la surface totale du dôme (3) et est exempte desdites configurations géométriques (7).
  2. Base selon la revendication 1, dans laquelle chacune desdites configurations géométriques (7) se présente sous la forme d'un polygone régulier à mosaïque.
  3. Base selon la revendication 2, dans laquelle ledit polygone est un hexagone régulier
  4. Base selon l'une quelconque des revendications précédentes, dans laquelle ladite région circulaire intérieure (5) du dôme (3) est également exempte desdites configurations géométriques (7).
  5. Base selon l'une quelconque des revendications précédentes, dans laquelle lesdites configurations géométriques occupent au moins 30% de la surface de ladite région annulaire médiane (6) du dôme (3).
  6. Base selon l'une quelconque des revendications précédentes, dans laquelle lesdites configurations géométriques [7] sont sous la forme de régions en retrait [9].
  7. Base selon la revendication 6, dans laquelle lesdites régions en retrait [9] définissent des empreintes ayant une profondeur [A-A'] d'au moins 0,5 mm.
  8. Base selon l'une quelconque des revendications précédentes, dans laquelle un cercle entourant chaque formation polygonale ou circulaire a un diamètre inférieur à 50% de la largeur de la région annulaire médiane (6).
  9. Base selon l'une quelconque des revendications précédentes, dans laquelle ledit rebord est d'un profil incurvé, ayant un rayon de courbure d'au moins 1 mm.
  10. Bouteille en plastique [12] comprenant une base renforcée selon l'une quelconque des revendications précédentes.
  11. Bouteille selon la revendication 10, comprenant une paroi [8] s'étendant du rebord [2] de la base à une région de col [14] au sommet de la bouteille ; dans laquelle ladite paroi est pourvue d'un renfort circonférentiel [13] pour résister à la déformation de la bouteille sous vide et ladite paroi a une section transversale convexe entre ledit renfort et ledit rebord.
  12. Bouteille selon la revendication 11, dans laquelle ladite paroi (8) est pourvue d'un deuxième renfort de type circonférentiel [17] et dans laquelle ladite paroi a une section transversale convexe entre le premier (13) et second (17) renfort.
  13. Bouteille selon l'une des revendications 11 ou 12, dans laquelle ledit renfort (13, 17) a la forme d'une rainure [15, 18] dans la paroi de la bouteille.
  14. Bouteille selon l'une quelconque des revendications 10 à 13 ayant une capacité d'au moins un litre.
EP15727405.1A 2014-06-12 2015-06-08 Fond renforcé pour des bouteilles ou des flacons en matière plastique Active EP3154864B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15727405T PL3154864T3 (pl) 2014-06-12 2015-06-08 Wzmocniona podstawa dla butelek lub flaszek z tworzyw sztucznych

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP14398005 2014-06-12
GB1503354.1A GB2527171B (en) 2014-06-12 2015-02-27 Bottle and base
PCT/EP2015/062667 WO2015189127A1 (fr) 2014-06-12 2015-06-08 Bouteille et base

Publications (2)

Publication Number Publication Date
EP3154864A1 EP3154864A1 (fr) 2017-04-19
EP3154864B1 true EP3154864B1 (fr) 2020-02-19

Family

ID=51178848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15727405.1A Active EP3154864B1 (fr) 2014-06-12 2015-06-08 Fond renforcé pour des bouteilles ou des flacons en matière plastique

Country Status (7)

Country Link
EP (1) EP3154864B1 (fr)
DK (1) DK3154864T3 (fr)
ES (1) ES2787648T3 (fr)
GB (1) GB2527171B (fr)
PL (1) PL3154864T3 (fr)
PT (1) PT3154864T (fr)
WO (1) WO2015189127A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022125098A1 (fr) * 2020-12-10 2022-06-16 Amcor Rigid Packaging Usa, Llc Base de récipient dotée d'évidements intérieurs profonds

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7114276B2 (ja) * 2018-03-05 2022-08-08 サントリーホールディングス株式会社 プラスチックボトル

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Publication number Priority date Publication date Assignee Title
US3468443A (en) * 1967-10-06 1969-09-23 Apl Corp Base of plastic container for storing fluids under pressure
JPH07112729A (ja) * 1993-10-13 1995-05-02 Toppan Printing Co Ltd 耐熱性プラスチック容器
US5511966A (en) * 1993-11-29 1996-04-30 Nissei Asb Machine Co., Ltd. Biaxially stretch blow-molded article and bottom mold therefor
JP3425236B2 (ja) * 1994-08-01 2003-07-14 株式会社フロンティア ２軸延伸吹込成形壜
US5503283A (en) * 1994-11-14 1996-04-02 Graham Packaging Corporation Blow-molded container base structure
US7543713B2 (en) * 2001-04-19 2009-06-09 Graham Packaging Company L.P. Multi-functional base for a plastic, wide-mouth, blow-molded container
US8276774B2 (en) * 2003-05-23 2012-10-02 Amcor Limited Container base structure responsive to vacuum related forces
EP2459456B1 (fr) * 2009-07-31 2018-04-25 Amcor Group GmbH Contenant de remplissage à chaud
US8991628B2 (en) * 2010-11-12 2015-03-31 Graham Packaging Company, L.P. Hot-fill jar base
FR2989356B1 (fr) * 2012-04-17 2014-04-11 Sidel Participations Recipient comprenant un fond voute a section etoilee

Non-Patent Citations (1)

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Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022125098A1 (fr) * 2020-12-10 2022-06-16 Amcor Rigid Packaging Usa, Llc Base de récipient dotée d'évidements intérieurs profonds

Also Published As

Publication number Publication date
WO2015189127A1 (fr) 2015-12-17
GB2527171A (en) 2015-12-16
ES2787648T3 (es) 2020-10-16
PL3154864T3 (pl) 2020-07-27
PT3154864T (pt) 2020-03-24
GB201503354D0 (en) 2015-04-15
DK3154864T3 (da) 2020-05-04
GB2527171B (en) 2016-04-27
EP3154864A1 (fr) 2017-04-19

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