EP2735517B1 - Récipient en plastique avec un fond base renforcé - Google Patents

Récipient en plastique avec un fond base renforcé Download PDF

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Publication number
EP2735517B1
EP2735517B1 EP13194650.1A EP13194650A EP2735517B1 EP 2735517 B1 EP2735517 B1 EP 2735517B1 EP 13194650 A EP13194650 A EP 13194650A EP 2735517 B1 EP2735517 B1 EP 2735517B1
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EP
European Patent Office
Prior art keywords
container
plastics material
region
reinforcing ribs
material container
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
EP13194650.1A
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German (de)
English (en)
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EP2735517A1 (fr
Inventor
Arno Haner
Gerald Hüttner
Thomas Ringl
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.)
Krones AG
Original Assignee
Krones AG
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Filing date
Publication date
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Publication of EP2735517A1 publication Critical patent/EP2735517A1/fr
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Publication of EP2735517B1 publication Critical patent/EP2735517B1/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
    • B65D1/0284—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—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/0261—Bottom construction

Definitions

  • the present invention relates to a plastic container and more particularly to a plastic bottle.
  • plastic containers have long been known from the prior art.
  • various criteria must be considered.
  • an appealing design of these floors should be created, on the other hand, they should also have good stability and in some embodiments also have sufficient resistance to the pressure of the liquid in the container and also generally to pressures in a longitudinal direction of these containers be exercised.
  • container bottoms have been known for some time from the prior art, which in particular have radially extending reinforcing ribs.
  • the WO 2011/157952 A1 describes a plastic container according to the preamble of claim 1. This extends between a neck region and a bottom that can withstand a hydrostatic pressure.
  • the present invention has for its object to provide a plastic container available, which on the one hand has a high stability, but with a comparatively low soil weight manages.
  • a sufficient stability of the soil advantageously even at a non-centric load, for example, be ensured within a secondary packaging.
  • such a container should also meet the criteria of portability and stability within a filling line become.
  • the susceptibility to deformations should be reduced, ie it should be advantageously achieved that the container remains stable even with small deformations.
  • a plastic container according to the invention has an opening region and a main body adjoining this mouth region in a longitudinal direction of the plastic container, which in turn has a peripheral wall running around in a circumferential direction of the container. Furthermore, the plastic container has a container base adjoining this basic body, this container bottom having a central region and a multiplicity of ribs which extend from this central region in the direction of the circumferential wall.
  • a step-shaped section extending at least partially in the circumferential direction of the container is provided in a peripheral region of the container bottom extending in a circumferential direction about the longitudinal direction of the container, wherein a height position of this step-shaped section varies in the longitudinal direction of the container.
  • a step-shaped section is formed in the peripheral region of the container base, by means of which the stability of the container is fundamentally increased. Furthermore, however, this step-shaped portion does not extend in the circumferential direction at a constant height, but its height varies in the circumferential direction. In other words, the step-shaped portion along its course in the circumferential direction of the container at different heights. Thus, the step-shaped portion may have areas which are closer to the container bottom than other areas.
  • the bottom portion of the container thus has, in addition to the actual bottom surface, which at least in a standing container also facing down, still a peripheral surface.
  • the bottom section also has a preferably likewise annular transition section, with which the bottom surface merges into the peripheral region.
  • said peripheral region extends at least also in a longitudinal direction of the plastic container and preferably has an angle with respect to this longitudinal direction which lies between 0 ° and 40 °, preferably between 0 ° and 30 °, and preferably between 0 ° and 20 °.
  • said stepped portion extends fully circumferentially in the circumferential direction of the container, and thus more preferably forms a closed line.
  • said (reinforcing) ribs extend at least partially in the radial direction and preferably the (reinforcing) ribs each extend at least in sections in a radial direction of the container, i. a direction which would intersect a geometric axis of rotation or the longitudinal direction of the container.
  • rib and groove are used. Both terms designate the same objects.
  • rib describes the technical function and the notion of the groove the geometric design.
  • the reinforcing ribs are formed as a groove-shaped structure.
  • the reinforcing ribs or grooves extend in a predefined direction, and this direction preferably has a straight course, at least when projected in a specific projection direction.
  • these reinforcing ribs have a substantially rectilinear profile when projected in the longitudinal direction of the container.
  • the reinforcing ribs extend along their entire course in a direction which is composed of components of a radial direction of the container and the longitudinal direction.
  • these ribs are formed as reinforcing ribs and have, for example, in the interior of the container extending buckles. Through these reinforcing ribs, the rigidity of the soil can be increased in its entirety.
  • the central area is at least partially dome-shaped.
  • a dome-shaped section can be provided within the central area.
  • this dome-like section can extend in the direction of the interior of the container.
  • the container or the bottom has at least two, preferably at least three different types of reinforcing ribs.
  • these ribs differ in terms of their length.
  • a first number of main ribs may be provided, which are formed longer and further a second plurality of side ribs, which are preferably shorter than the main ribs. It is possible that the main and the sub-ribs are each arranged alternately in the circumferential direction.
  • the stepped portion is formed such that a circumference of the container or a cross section of the container in the region of the step portion from top to bottom, i. towards the floor, rejuvenated.
  • the step-shaped section has, at least in sections, a curved course relative to the longitudinal direction of the plastic container (or in a projection perpendicular to the longitudinal direction).
  • the course if it is traced in the circumferential direction of the container, is in each case curved at least in sections.
  • the height of this step-shaped portion preferably does not change stepwise, but continuously.
  • the step-shaped course with respect to the longitudinal direction of the plastic container on a wave-shaped or sinusoidal course has improved stability against pressure from above the container and against a force from below, for example by the closure of a bottle (for example, when stacking). More precisely, the force is optimally distributed by this curved step, or the curved stepped portion and also the stiffening ribs ending at the various positions.
  • the foothills The reinforcing ribs do not form horizontally conceived stress peaks or possible kinks.
  • this step-shaped section advantageously has a surface extending in the radial direction and in the circumferential direction (and thus in particular annular), which points downwards.
  • This curved, step-shaped section can also have a different number of wave high and low points depending on the number of grooves or the number of reinforcing ribs. However, at least two wave peaks and two wave depths are advantageously distributed around the container circumference. Advantageously, these high and low points alternate between the foothills of the reinforcing ribs in the respective flank surfaces of the containers.
  • the peak-to-valley value of the curved, step-shaped section is between 2% and 40% of a height of the floor, preferably between 5% and 30% and particularly preferably between 10% and 25%.
  • the height of the floor is determined in particular by the height of a corresponding bottom part, which forms its bottom area during a blowing process of the plastic container.
  • the step-shaped portion advantageously has a difference in diameter (between the major diameter and the flank surfaces) which is dependent on the major diameter.
  • the stepped portion connects the bottle body or the body with the ground.
  • the difference in diameter is preferably between 0.5 mm and 2 mm, more preferably between 0.6 mm and 1.5 mm and particularly preferably between 0.75 mm and 1.25 mm.
  • the mentioned dom-shaped portion in the central region can assume different radii of curvature at different major diameters of the container.
  • a concave dome in the interior of the container dome is advantageously provided.
  • a main dome may be provided, which extends from a peripheral edge of the container in the central region, and within the central region, a second dome may be provided, in particular with a greater curvature.
  • a radius of this "small dome", which is provided in the region of the center of the floor may have a radius which is selected in dependence on a major diameter and a ground level.
  • At least one rib extends in the above-mentioned peripheral region of the container bottom.
  • at least one rib extends in the longitudinal direction of the container or at an angle relative to the longitudinal direction of the container, which is smaller than 40 °, preferably smaller than 30 °, preferably smaller than 20 ° and preferably smaller than 10 °.
  • the respective reinforcing ribs preferably end in front of the step-shaped section.
  • the respective reinforcing ribs always end directly below the stepped portion, so that although the reinforcing ribs are always formed up to the step-shaped portion, but never pass through this.
  • At least two reinforcing ribs end at different heights of the container with respect to their longitudinal direction.
  • the reinforcing ribs of a first group of reinforcing ribs end at a first height of the container and the reinforcing ribs of a second group of reinforcing ribs terminate at a second, deviating, height.
  • the ribs end at the same height.
  • the plastic container is preferably a blow-molded container and in particular a stretch blow-molded plastic container.
  • this plastic container is made of PET.
  • the transition region of the bottom section has a in the circumferential direction of the container extending wall portion which is curved in the longitudinal direction. Particularly preferably, in addition to this first wall area extending in the circumferential direction, a second wall area extending in the circumferential direction is provided, which is also preferably curved.
  • the flank of the base in particular below the step-shaped portion, at least two surfaces, which are particularly preferably rounded and more preferably not tangential.
  • the plastic container has an annular base.
  • this annular standing surface is formed in the bottom region and is particularly preferably interrupted only by the reinforcing ribs or a part of these reinforcing ribs.
  • the bottom section thus has a standing surface, wherein preferably a stator diameter is selected as a function of a main diameter of the container.
  • this stator diameter is between 65 and 85% of the main diameter of the container and preferably between 70% and 80% of this major diameter.
  • At least two reinforcing ribs which may already end before the step-shaped section, have a different groove cross-sectional geometry with respect to each other.
  • the groove radii of these two groove cross sections may differ from one another.
  • These groove radii are advantageously between 0.5 mm and 2 mm, more preferably between 0.6 mm and 1.5 mm and particularly preferably between 0.75 mm and 1.25 mm.
  • the height of a groove outlet, in particular in the flank surfaces, of stiffening groove to stiffening groove may be different.
  • longer ribs or main ribs may intersect the above-mentioned dome-shaped section and extend to this dome-shaped section into the central region of the bottom.
  • the present invention is further directed to a container bottom for a plastic container.
  • This container bottom has in this case a central region, in which in particular an injection point is arranged.
  • the container bottom also has a plurality of - in particular groove-like - reinforcing ribs which extend in a radial direction of the container bottom.
  • a step-shaped section extending at least partially in the circumferential direction of the container is provided in a peripheral region of the container bottom extending in a circumferential direction about the longitudinal direction of the container, wherein a height position of this step-shaped section varies in the longitudinal direction of the container.
  • the container bottom which may be combined in particular with any containers, suggested that the said stepped portion does not extend at a constant height (relative to a direction perpendicular to the ground direction, which corresponds to a longitudinal direction of the container)
  • the container bottom is designed in the manner described above.
  • the container bottom has a substantially circular cross-section.
  • the step-shaped section according to the invention also in containers with other common cross sections (for example rectangular cross sections, square cross sections, cross sections with rounded corners, oval cross sections and the like).
  • the present invention is further directed to the use of a container of the type described above and / or a container bottom of the type described above for filling a still (i.e., in particular non-carbonated or low-carbon) beverage, and in particular a still water.
  • a container of the type described above and / or a container bottom of the type described above for filling a still (i.e., in particular non-carbonated or low-carbon) beverage, and in particular a still water.
  • FIGS. 1a-1d show a container 1 according to the invention in a first embodiment. It shows Fig. 1
  • This container has a mouth region 2 with a thread on which a closure can be screwed.
  • a base body 4 of the container follows, which encloses substantially the inner volume of the container 1.
  • a bottom region or the container bottom 6 adjoins this base body 4, which is to be described here in the context of the invention.
  • This container bottom 6 has a stepped portion 44 which, as in Fig. 1a recognizable forms a wave-shaped course with high points and low points.
  • this container bottom reinforcing ribs 64 and 66 which are formed in different lengths.
  • reinforcing ribs also extend into a peripheral region 60 of the container bottom 6, but do not touch or cut the step-shaped section 44.
  • the reference numeral 42 denotes a peripheral wall of the main body, which encloses substantially the volume of liquid held or receivable by the plastic container.
  • Fig. 1b shows an oblique view of a container bottom 6.
  • This case again has the two reinforcing ribs 64 and 66.
  • the reference numeral 62 denotes a central region of the container base 6, in the middle of the injection point 68 is arranged. It can be seen that the longer reinforcing ribs 64 extend as far as this central region 62, but the shorter reinforcing ribs 66 terminate preferably in front of the central region 62, wherein it would also be conceivable for the reinforcing ribs 66 also to extend into the central region 62.
  • the central area here has a circular cross-section.
  • the radius of this central region is preferably between 1/7 and 6/7 of the radius of the bottom section, preferably between 1/6 and 5/6 of the radius of the bottom section, preferably between 1/5 and 4/5 of the radius of the bottom section, preferably between 1 / 5 and 3/5 of the radius of the bottom section.
  • Reference numeral 76 also indicates the bottom portion within which the reinforcing ribs 66 and 64 are at least partially formed. This bottom region 76 extends from the central region 62 up to the actual footprint 70.
  • this bottom portion 76 is domed domed inward. However, a corresponding radius of curvature of the central region 62 is smaller than a bulge region of the bottom region 76. In this case, this bottom region 76 is thus formed annular in cross section.
  • the reference character R66 indicates a radius of curvature of the shorter reinforcing ribs 66.
  • the reference numeral 72 denotes a stand ring, or an outer circle on which the container comes to a standstill. This circle is followed by a circular, curved surface 75 and then back in the direction of the main body of the container 2 flank surfaces 32 and 36, which are delimited from each other by a rounding 34 extending therebetween. These two flank surfaces are formed curved with respect to the longitudinal direction L of the container 1.
  • the step-shaped section 44 has a wave-shaped structure and thus wave peaks 44a and wave depression points 44b.
  • a wave peak is understood as meaning the region which is arranged closer to the bottom or the reinforcing ribs, and below a wave bottom point that section which is farther away from these reinforcing ribs 64, 66.
  • the reference numeral 38 denotes a bottom flank, with which the container base 6 passes over the step-shaped section 44 into the base body 4.
  • Fig. 1c shows again a top view of the container bottom 6.
  • the reinforcing ribs 64 and 66 each terminating in front of the stepped portion 44, may have a different groove cross-sectional geometry to each other.
  • the groove radii of the two groove cross sections may also be different.
  • a geometry of the individual reinforcing ribs preferably does not change in its course, but may change depending on the groove depth and the main diameter X (of the container bottom in its entirety).
  • a groove contour of the respective shorter reinforcing ribs 66 and the basic contour of the container base 6 in the region of the flank surfaces further, these small reinforcing ribs 66 intersect the bottom portion 76 and the large dome, respectively, in the illustrated range E-F at a predetermined angle a, that of the major diameter X and the ground height H6 depends.
  • This angle a is preferably between 5 ° and 15 °, preferably between 8 ° and 12 °. In this case, this angle a also depends on the radius of curvature of the transition region R76.
  • the reference character T66 in FIG Fig. 1d indicates a groove depth of the reinforcing rib 66.
  • the groove contour of the long reinforcing rib 64 does not follow the basic contour of the bottom shape in the area A-B. In the region BC, the groove contour follows the base contour parallel to the central region 62.
  • the distance between the groove contour and the base contour can vary depending on the ground height and the main diameter X, as mentioned in more detail above, and is preferably between 0.75 mm and 1.5 mm , The groove depth can be different in the case of the longer and shorter reinforcing ribs or stiffening ribs 64, 66.
  • the groove geometry of the individual reinforcing ribs that is to say in particular the angle b66 and R 66, remains constant throughout the course. However, they may change depending on the groove depth and the major diameter of the container bottom 6.
  • the groove opening angle b66 of the reinforcing ribs may have different values. This angle is preferably in a range between 55 ° and 120 ° and particularly preferably between 70 ° and 115 °.
  • FIGS. 2a-2e show a further embodiment of a container according to the invention 1.
  • Fig. 2a shows a side view
  • Fig. 2b shows a plan view of the container bottom 6, wherein the reinforcing ribs 64 and 66 can be seen
  • Fig. 2c again shows an oblique view of the container bottom 6.
  • the long reinforcing ribs 64 extend only to the edge of the central region 62. Also here have the reinforcing ribs 64 no consistent profile, but this changes.
  • the in Fig. 2c bottom shown a variety of lateral stiffening ribs 69, which are arranged on the lateral edge of the container bottom 6. However, these lateral stiffening ribs 69 do not intersect the stepped portion 44 either.
  • the reinforcing ribs 64 and 66 which in turn terminate here in front of the step-shaped section, can here again have a different or different groove cross-sectional geometry. Again, reinforcing ribs can go beyond the rounding of the flank surface, but not cut the step-shaped section.
  • the groove diameters of these reinforcing ribs may be different.
  • the groove contours of these reinforcing ribs do not follow the basic contour of the soil in its entire course here.
  • the reference R64 in FIG Fig. 2e indicates a radius of curvature of the reinforcing ribs 64.
  • the main reinforcing ribs 64 extend tangentially in the bottom surface, but may leak even before the large dome-like structure 76.
  • they have a radius that is constant in a range J-K and is preferably between 0.2 and 1.5 mm.
  • the intermediate ribs 66 also preferably run tangentially in the bottom surface here and end within the bottom surface, as shown.
  • these side reinforcing ribs or side ribs end in a ratio with respect to the major diameter X in a range which is between 25% and 75% and preferably between 30 and 70% and particularly preferably between 40 and 60%.

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

Claims (10)

  1. Récipient en matière plastique (1) présentant une zone d'embouchure (2), un corps de base (4) adjacent à ladite zone d'embouchure (2) dans une direction longitudinale (L) du récipient en matière plastique (1) avec une paroi périphérique (42) s'étendant dans une direction circonférentielle du récipient en matière plastique (1), et un fond de récipient (6) adjacent audit corps de base (4), ledit fond de récipient présentant une partie centrale (62) ainsi qu'une pluralité de rainures de renforcement (64, 66) qui s'étendent depuis ladite partie centrale (62) vers la paroi périphérique (42), une section à épaulement (44) qui s'étend au moins en partie dans la direction circonférentielle du récipient en matière plastique (1) étant formée dans une partie périphérique (60) du fond de récipient (6) s'étendant tout autour de la direction longitudinale (L),
    caractérisé en ce qu'
    une position en hauteur de ladite section à épaulement (44) varie dans la direction longitudinale (L).
  2. Récipient en matière plastique (1) selon la revendication 1,
    caractérisé en ce que
    la section à épaulement (44) présente au moins en sections un tracé courbé par rapport à la direction longitudinale (L) du récipient en matière plastique (1).
  3. Récipient en matière plastique (1) selon la revendication 2,
    caractérisé en ce que
    la section à épaulement (44) présente un tracé ondulé par rapport à la direction longitudinale (L) du récipient en matière plastique (1).
  4. Récipient en matière plastique selon au moins une des revendications précédentes,
    caractérisé en ce qu'
    au moins une rainure de renforcement (64) s'étend dans la partie périphérique (60) du fond de récipient (6).
  5. Récipient en matière plastique (1) selon au moins une des revendications précédentes,
    caractérisé en ce que
    chaque rainure de renforcement (64, 66) est espacée de la section à épaulement (44).
  6. Récipient en matière plastique (1) selon au moins une des revendications précédentes,
    caractérisé en ce qu'
    au moins deux rainures de renforcement (64, 66) se terminent à des hauteurs différentes du récipient (1) par rapport à leur direction longitudinale (L).
  7. Récipient en matière plastique (1) selon au moins une des revendications précédentes,
    caractérisé en ce qu'
    au moins une rainure de renforcement coupe la partie centrale (62).
  8. Récipient en matière plastique (1) selon au moins une des revendications précédentes,
    caractérisé en ce que
    la partie centrale (62) présente au moins en sections une structure en coupole.
  9. Récipient en matière plastique (1) selon au moins une des revendications précédentes,
    caractérisé en ce que
    la partie périphérique (60) présente une première zone de paroi s'étendant dans la direction circonférentielle qui est incurvée dans la direction longitudinale (L).
  10. Récipient en matière plastique (1) selon au moins une des revendications précédentes,
    caractérisé en ce que
    ledit récipient en matière plastique (1) présente une surface de contact annulaire.
EP13194650.1A 2012-11-27 2013-11-27 Récipient en plastique avec un fond base renforcé Active EP2735517B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012111493.5A DE102012111493A1 (de) 2012-11-27 2012-11-27 Kunststoffbehältnis mit verstärktem Boden

Publications (2)

Publication Number Publication Date
EP2735517A1 EP2735517A1 (fr) 2014-05-28
EP2735517B1 true EP2735517B1 (fr) 2015-03-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13194650.1A Active EP2735517B1 (fr) 2012-11-27 2013-11-27 Récipient en plastique avec un fond base renforcé

Country Status (4)

Country Link
US (2) USD700520S1 (fr)
EP (1) EP2735517B1 (fr)
CN (1) CN103950605B (fr)
DE (1) DE102012111493A1 (fr)

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DE202008012290U1 (de) 2008-09-15 2008-11-20 Krones Ag Kunststoffbehältnis
DE102008047450A1 (de) * 2008-09-15 2010-04-15 Krones Ag Kunststoffbehältnis
JP5377239B2 (ja) * 2009-11-13 2013-12-25 サントリー食品インターナショナル株式会社 ボトル型容器
US20110303682A1 (en) * 2010-06-10 2011-12-15 Graham Packaging Company, L.P. Heat sterilizable plastic container
FR2961492B1 (fr) 2010-06-18 2012-07-13 Sidel Participations Recipient leger a fond renforce
JP5408501B2 (ja) * 2010-08-31 2014-02-05 株式会社吉野工業所 合成樹脂製壜体
FR2967975B1 (fr) * 2010-11-25 2012-12-28 Sidel Participations Fond de recipient petaloide combine

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USD700520S1 (en) 2014-03-04
US9327861B2 (en) 2016-05-03
US20140175043A1 (en) 2014-06-26
DE102012111493A1 (de) 2014-05-28
EP2735517A1 (fr) 2014-05-28
CN103950605A (zh) 2014-07-30
CN103950605B (zh) 2016-06-01

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