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US20200189785A1 - Container having a bottom base provided with notches - Google Patents

Container having a bottom base provided with notches Download PDF

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Publication number
US20200189785A1
US20200189785A1 US16/621,059 US201816621059A US2020189785A1 US 20200189785 A1 US20200189785 A1 US 20200189785A1 US 201816621059 A US201816621059 A US 201816621059A US 2020189785 A1 US2020189785 A1 US 2020189785A1
Authority
US
United States
Prior art keywords
notches
container
series
reinforcing grooves
container 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.)
Abandoned
Application number
US16/621,059
Other languages
English (en)
Inventor
Sergio Fabian Fonseca
Arrnando Guido Marchesini
Gustavo Medrano
Pascual Casimiro Poloni
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.)
Societe des Produits Nestle SA
Original Assignee
Societe des Produits Nestle SA
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 Societe des Produits Nestle SA filed Critical Societe des Produits Nestle SA
Publication of US20200189785A1 publication Critical patent/US20200189785A1/en
Abandoned legal-status Critical Current

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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—Rigid or semi-rigid 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 or 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
    • B65D1/00—Rigid or semi-rigid 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 or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
    • 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

Definitions

  • the invention relates to improvements made to containers, in particular bottles or jars, obtainable by blowing, blow-molding or stretch blow-molding of preforms made of thermoplastic material such as PET (polyethylene terephthalate), PE (polyethylene), or PEF (polyethylene furanoate).
  • PET polyethylene terephthalate
  • PE polyethylene
  • PEF polyethylene furanoate
  • Manufacturing of containers by blow-molding ordinarily consists of inserting, into a mold with the imprint of the container, a preform previously heated to a temperature above the glass transition temperature of the thermoplastic material, and of injecting into the preform a fluid (particularly a gas such as air but it can also be an incompressible fluid such as water) under pressure.
  • the blowing can be completed by a preliminary stretching of the preform by means of a sliding rod.
  • Such containers have a body extending between, at the top, a neck and, at the bottom, a base adapted for withstanding without marked deformation the hydrostatic pressure due to the liquid column which rises above them.
  • Containers intended to contain a still liquid are, in the majority of cases, provided with a rounded base in the general form of a spherical cap having a concavity turned outwards and of relatively small height.
  • Such bases are often provided with substantially radially radiating grooves (also called ribs) which are distributed around a central recess, said grooves having various shapes and optionally extending possibly onto the lower part of the wall of the body in order to reinforce the foundation (peripheral zone with which the base rests on a support).
  • Such bases in addition to withstanding the hydrostatic pressure due to the liquid column which rises above them, should offer sufficient resistance to withstand any additional stress, even though small, that may be due for example to palletization, logistic transportation or storage.
  • a hit on an edge of the container, a shock or a bump may result in a crack or in a rift in the container, especially at the base location, leading to a loss of water from the container rending to container useless.
  • a first objective of the present invention is to propose a container, the base of which offers good resistance to denting and cracks.
  • a second objective is to propose a container for which the optimized structure and geometry of the base gives it a good compromise between blowability, lightness and rigidity while avoiding generation of cracks at the container base location in case of bumps or shocks.
  • the invention provides a plastic container according to claim 1 , said container having a body and a bottom base extending from a lower end of the body in which the bottom base comprises a series of principal reinforcing grooves extending radially from the central zone to at least the peripheral seat and a series of notches, in which at least one of the series of principal reinforcing grooves is locally interrupted by at least one of the series of notches
  • thermoplastic material in the base is better controlled.
  • the notches allow reducing the stiffness of the base by increasing flexibility in the zone comprising a high level of amorphous material around the central zone.
  • the series of notches are arranged on a circular line (L) concentric with the injection point. This arrangement is sufficient for small container to improve the resistance to breakage of the base due to denting and shocks.
  • the series of notches are part of a circular groove (C) concentric with the injection point. Thanks to the circular groove (C), the decoupling is complete.
  • the series of notches are arranged on the perimeter of a circular groove (C) concentric with the injection point.
  • the circular groove (C) is adding its advantages to the ones of the notches.
  • the notches interrupt the principal reinforcing grooves in an arcuate manner.
  • the circular line (L) or the groove (C) has a radius within the range from 10 mm to 40 mm.
  • the proposed range takes into account the base dimension according to the volume of the container.
  • the at least one of the series of principal reinforcing grooves is locally interrupted by at least one of the series of notches along an axis that is perpendicular to the main axis of said at least one of the series of principal reinforcing grooves.
  • each principal reinforcing grooves is interrupted by one notch.
  • each principal reinforcing grooves is interrupted by at least two notches. This may be the case for volumes higher than 2 L.
  • the notches have a base dimensions, corresponding to their opened side, ranging from 2 mm to 6 mm
  • the notches have a triangular profile in cross section. This type of profile is quite easy to blow and very efficient for decoupling purpose.
  • the notches have a depth within the range from 0.5 mm to the depth of the principal reinforcing groove.
  • the principal reinforcing grooves have an open angle comprised within the range from 20° to 80°.
  • the proposed base further comprises intermediate reinforcing grooves extending radially from the concave arch or the central zone to at least the peripheral seat, said intermediate reinforcing grooves being interspersed between the principle reinforcing grooves.
  • intermediate reinforcing grooves allows diminishing the surface with flat structure on the base thereby reinforcing the bottom base of the container to resist pressure and denting.
  • the bottom base comprises a fully structured surface contributes to avoiding reversal of the bottom base and to resisting to pressure.
  • the principal and/or intermediate reinforcing grooves extend locally over the peripheral seat and rise up over the bottom base of the container to the body of the container.
  • This specific feature allows having good resistance to lateral denting.
  • the proposed features allow improving the performance of the base versus a base that does not have the proposed notches.
  • the improved performances are particularly visible on the vertical drop test: no more breakage at the location of / or in alignment with the injection point is observed.
  • FIG. 1 is a general view of a container made of plastic
  • FIG. 2 is a bottom view of the container of FIG. 1 presenting a bottom base according to the invention
  • FIG. 3 is a perspective view, showing the bottom of the container of FIG. 2 ;
  • FIG. 4 is an front view of the bottom base of the container of FIGS. 2 and 3 ;
  • FIG. 5 is a view in cross section along the line A-A, of the bottom base of FIG. 4 ;
  • FIG. 6 is a bottom view of the container of FIG. 1 presenting a bottom base according to a second embodiment of the invention.
  • FIG. 1 shows a general view of a container 1 , a bottle in this instance, produced by stretch blow molding a preform made of thermoplastic material, for example PET (polyethylene terephthalate, PE (polyethylene) or PEF (polyethylene furanoate).
  • PET polyethylene terephthalate
  • PE polyethylene
  • PEF polyethylene furanoate
  • Said container 1 comprises, at an upper end, a neck 2 , provided with a mouth 3 .
  • the container 1 comprises in its upper part a shoulder 4 that widens out in the direction opposite to the neck 2 , said shoulder 4 being extended by a lateral wall or body 5 , of a shape generally cylindrical in revolution around a main axis X of the container 1 .
  • the container 1 further comprises at the bottom, a base 6 which extends, opposite the neck 2 , from a lower end of the body 5 .
  • the base 6 comprises a peripheral seat 7 in the form of an annular ridge which extends substantially axially in the extension of the body 5 .
  • the seat 7 terminates in a laying plane 8 (also called seating plane) perpendicular to the axis X of the container 1 , said seating plane 8 defining the lower end of the container 1 and enabling it to be seated upright on a flat surface.
  • D denotes the diameter of the seating plane 8
  • the term “diameter” covering not only the case (illustrated) in which the container 1 (and thus the base 6 ) has a circular contour, but also a case in which the container 1 would have a polygonal contour (for example square), in which case the term “diameter” would designate the diameter of the circle in which said polygon is inscribed.
  • FIGS. 2 to 5 will be jointly described in the following part.
  • FIGS. 2 and 3 presenting a bottom view and perspective view of the base of container of FIG. 1 integrating the features of the invention, show the bottom base 6 which from its peripheral part 7 to its center comprises the peripheral seat 7 , already described, a concave arch 10 , a central zone 11 comprising in the middle an injection point 12 .
  • Said injection point 12 being an amorphous pellet resulting from the formation of the preform and located in its center.
  • the concave arch 10 has a rounded general shape. It is in the form of a substantially spherical dome with the concavity turned towards the exterior of the container 1 in the absence of stress, i.e. in the absence of contents in the container 1 .
  • the arch 10 extends from the seat 7 , to the central zone 11 of the bottom 6 forming a bump projecting towards the interior of the container 1 .
  • the base 6 comprises a series of principle reinforcing grooves 13 .
  • Said principal reinforcing grooves 13 are hollow towards the interior of the container 1 . They extend radially from the central zone 11 to at least the peripheral seat 7 defining for each principal reinforcing groove a main axis (G, G′, G′′).
  • the principal reinforcing grooves 13 extend beyond the seat 7 , rising laterally over a lower part of the body 5 of the container 1 .
  • the principal grooves 13 extend radially over the entire arch 10 , over the peripheral seat 7 and part of the body 5 . It will therefore be understood that the seating plane 8 is discontinuous because it is interrupted at each principal groove 13 . In the present example, there are six principle grooves 13 , but this number could be higher, specifically seven or eight for a container with a different volume.
  • the reinforcing grooves 13 have an open angle comprised within the range from 20° to 80°.
  • the body 6 is further provided with a series of intermediate reinforcing grooves 14 situated between the principal grooves 13 , and which extend locally over the concave arch 10 that they thus contribute to rigidifying.
  • the intermediate ribs of 14 extend from the central region 15 of the concave arch 10 towards the exterior beyond the peripheral seat 7 , rising laterally over a lower part of the body 5 , like the principal reinforcing grooves 13 .
  • the intermediate reinforcing grooves 14 may extend from the central region 15 to the peripheral seat 7 without extending over it.
  • the intermediate reinforcing grooves 14 are each interposed between two adjacent principle reinforcing grooves 13 .
  • Both principal 13 and intermediate 14 reinforcing grooves rise up to the body 5 of the container 1 to a height comprised within the range from 9 to 15 mm with respect to the laying plan 8 .
  • the bottom base 6 further comprises a series of notches 15 .
  • the notches 15 locally interrupt the principal reinforcing grooves 13 so as to provide a discontinuity in the principal reinforcing grooves 13 .
  • the notches 15 are arranged on a circular line L concentric with the injection point 12 located on the concave arch 10 proximate the central zonell.
  • This line may be a virtual line or a line coming from an imprint in the mold (as presented in FIGS. 2 and 3 ) in which the preform is introduced for the bi-orientation process (blow-molding process).
  • the notches are positioned along a circular line L located on the concave arch 10 proximate the central zone 11 .
  • the notches 15 interrupt the principal reinforcing grooves 13 in the concave arch 10 in an arcuate manner.
  • This discontinuity in the extension of the principal reinforcing grooves 13 along their main axis G, G′ or G′′ produces a decoupling between the central zone 11 (incorporating the injection point 12 ) and the main portion of concave arch 10 .
  • the injection point 12 and the central zone 11 comprise a high level of amorphous thermoplastic material (as they are not very much stretched during the bi-orientation process), which breaks easily when it is under stress (pressure or shock).
  • the decoupling allows creating an additional stretched zone in which the thermoplastic molecules are bi-oriented (and not anymore in an amorphous state). This bi-orientation generates a certain rigidity in the material while still allowing the material to undergo elastic deformation (which is not the case when the material is in the amorphous state).
  • the notches are part of a circular groove C concentric with the injection point 12 .
  • the notches interrupt the principal reinforcing grooves 13 in an arcuate manner.
  • the circular groove C may have a different profile than the profile of the notches 15 and the notches may be located at the perimeter of the circular groove C
  • Both, the circular line L and the circular circle C are centered on the injection point 12 . They have a radius ranging from 10 mm to about 40 mm.
  • the notches 15 have a base dimensions (open side of the notches) ranging from 2 mm to 6 mm.
  • the notches 15 have a depth within the range from 0.5 mm to the depth of the principal reinforcing groove 13 .
  • the depth of the principal reinforcing groove 13 may rise up to 5 mm or more according to the volume of the container.
  • each principal reinforcing grooves 13 is interrupted by one notch 15 . Thereby, decoupling between the central zone 11 and the concave arch 10 is realized.
  • each principal reinforcing grooves 13 is interrupted by at least two notches 15 leading to at least two decoupling.
  • the notches have a triangular asymmetric profile in cross section (see FIG. 5 ) but the profile may vary in shape, geometry and dimension.
  • profile is symmetric or asymmetric and /or having trapezoidal or square geometry, but other alternatives are available.
  • At least one of the series of principal reinforcing grooves 13 is locally interrupted by at least one of the series of notches 15 along an axis P, P′, P′′ that is perpendicular to the main axis G, G′, G′′ of said at least one of the series of principal reinforcing grooves 13 .
  • This further embodiment provides a decoupling a discontinuity in the extension of the principal reinforcing grooves 13 along their main axis G, G′ or G′′.
  • the base 6 comprising the notches 15 of the invention allows decoupling the amorphous zone (incorporating the injection point and part of the central zone) and the zone in which the thermoplastic material has been bi-oriented by creating an additional zone that need to be stretched.
  • the container 1 provided with the proposed base 6 offers a good compromise between the mechanical performance (i.e. the ability of the container 1 to resist deformations and denting) and blowability (i.e. the ability of the container 1 to be formed by blowing).

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
US16/621,059 2017-06-16 2018-06-11 Container having a bottom base provided with notches Abandoned US20200189785A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP17176461.6 2017-06-16
EP17176461 2017-06-16
PCT/EP2018/065263 WO2018228962A1 (en) 2017-06-16 2018-06-11 Container having a bottom base provided with notches

Publications (1)

Publication Number Publication Date
US20200189785A1 true US20200189785A1 (en) 2020-06-18

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ID=59093395

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Application Number Title Priority Date Filing Date
US16/621,059 Abandoned US20200189785A1 (en) 2017-06-16 2018-06-11 Container having a bottom base provided with notches

Country Status (7)

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US (1) US20200189785A1 (es)
EP (1) EP3638593B1 (es)
CN (1) CN110770134A (es)
AR (1) AR112165A1 (es)
CA (1) CA3067272A1 (es)
MX (1) MX2019014094A (es)
WO (1) WO2018228962A1 (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210039825A1 (en) * 2018-04-26 2021-02-11 Graham Packaging Company, L.P. Pressurized refill container resistant to standing ring cracking
US11155379B2 (en) * 2018-12-21 2021-10-26 Colgate-Palmolive Company Container apparatus
US20210347102A1 (en) * 2020-05-08 2021-11-11 Orora Packaging Australia Pty Ltd Bottle, and an insert and a mould for making the bottle
US11459140B2 (en) * 2019-12-27 2022-10-04 Yoshino Kogyosho Co., Ltd. Bottle
US20230166882A1 (en) * 2021-11-30 2023-06-01 Pepsico, Inc. Flexible base for aseptic-fill bottles
EP4169695A4 (en) * 2020-09-17 2024-07-17 Guangzhou Tech-Long Packaging Machinery Co., Ltd BLOW MOLD, BOTTLE BLOWING MACHINE AND PLASTIC BOTTLE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3120353B1 (fr) * 2021-03-02 2024-07-05 Sa Des Eaux Minerales Devian Et En Abrege S A E M E Bouteille à fond amélioré

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160288946A1 (en) * 2013-04-02 2016-10-06 Sidel Participations Container having a bottom provided with a stepped arch

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2904809B1 (fr) * 2006-08-08 2008-10-24 Sidel Participations Fond de corps creux obtenu par soufflage ou etirage soufflage d'une preforme en materiau thermoplastique, corps creux comprenant un tel fond
FR2991302B1 (fr) * 2012-05-31 2014-07-04 Sidel Participations Recipient ayant un fond muni d'une voute a decrochement
FR2998877B1 (fr) * 2012-11-30 2014-12-26 Sidel Participations Recipient ayant un fond muni d'une voute a double decrochement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160288946A1 (en) * 2013-04-02 2016-10-06 Sidel Participations Container having a bottom provided with a stepped arch

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210039825A1 (en) * 2018-04-26 2021-02-11 Graham Packaging Company, L.P. Pressurized refill container resistant to standing ring cracking
US11155379B2 (en) * 2018-12-21 2021-10-26 Colgate-Palmolive Company Container apparatus
US11459140B2 (en) * 2019-12-27 2022-10-04 Yoshino Kogyosho Co., Ltd. Bottle
US20210347102A1 (en) * 2020-05-08 2021-11-11 Orora Packaging Australia Pty Ltd Bottle, and an insert and a mould for making the bottle
EP4169695A4 (en) * 2020-09-17 2024-07-17 Guangzhou Tech-Long Packaging Machinery Co., Ltd BLOW MOLD, BOTTLE BLOWING MACHINE AND PLASTIC BOTTLE
US12415306B2 (en) 2020-09-17 2025-09-16 Guangzhou Tech-Long Packaging Machinery Co., Ltd Blow-molding mold, bottle blowing machine and plastic bottle
US20230166882A1 (en) * 2021-11-30 2023-06-01 Pepsico, Inc. Flexible base for aseptic-fill bottles
US12129072B2 (en) * 2021-11-30 2024-10-29 Pepsico, Inc. Flexible base for aseptic-fill bottles
US20250033824A1 (en) * 2021-11-30 2025-01-30 Pepsico, Inc. Flexible base for aseptic-fill bottles

Also Published As

Publication number Publication date
CN110770134A (zh) 2020-02-07
EP3638593A1 (en) 2020-04-22
MX2019014094A (es) 2020-02-07
CA3067272A1 (en) 2018-12-20
AR112165A1 (es) 2019-09-25
EP3638593B1 (en) 2021-07-21
WO2018228962A1 (en) 2018-12-20

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