EP4074614B1 - Plastikbehälter mit flachem boden - Google Patents

Plastikbehälter mit flachem boden Download PDF

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Publication number
EP4074614B1
EP4074614B1 EP22164654.0A EP22164654A EP4074614B1 EP 4074614 B1 EP4074614 B1 EP 4074614B1 EP 22164654 A EP22164654 A EP 22164654A EP 4074614 B1 EP4074614 B1 EP 4074614B1
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EP
European Patent Office
Prior art keywords
container
value
along
median axis
axis
Prior art date
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EP22164654.0A
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English (en)
French (fr)
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EP4074614C0 (de
EP4074614A1 (de
Inventor
Wilfried Hermel
Céline Vautier
Laurent NAVEAU
Michel Boukobza
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Sidel Participations SAS
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Sidel Participations SAS
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Publication of EP4074614A1 publication Critical patent/EP4074614A1/de
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Publication of EP4074614B1 publication Critical patent/EP4074614B1/de
Publication of EP4074614C0 publication Critical patent/EP4074614C0/de
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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
    • 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
    • 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 field of the invention is that of the design and manufacture of containers obtained by blow molding or stretch-blow molding of a plastic material blank, such as PET (polyethylene terephthalate).
  • a plastic material blank such as PET (polyethylene terephthalate).
  • a blank corresponds to a preform or an intermediate stage of the container being manufactured.
  • the invention relates more particularly to the manufacture of flat containers, that is to say containers having a laterally flattened body and an oval bottom for example.
  • These containers can be characterized by the shape of their bottom which has an oblong contour according to a bottom view of the container.
  • This type of container presents an inherent risk of instability in an upright position, and a risk of tipping around an axis parallel to the long length of the bottom.
  • One of the causes of this instability is the difference in distribution of the plastic material occurring during the blow molding of the blank.
  • the plastic material of the blank must stretch in the mold and be distributed to match the shape of the bottom of the mold.
  • the plastic material of the blank first reaches the central part of the bottom during its stretching, then stretches and reaches faster and in greater proportion the lateral ends of the bottom (the two opposite edges of the bottom which are closest to a central point of the bottom) than the longitudinal ends of the bottom (the two edges of the facing bottom which are farthest from the central point of the bottom), this bottom being oval, that is to say that its largest dimension, which is in a first direction, is significantly higher than its dimension in the direction perpendicular to this first direction.
  • a first example of the prior art illustrated by figure 1 , has a bottom of a flat container 91 according to a cross-sectional view of the bottom placed on a support 93, which shows that the bottom is provided with "feet" 92.
  • a container 91 is thus observed, provided with feet 92 used for place the container 91 stably on a support 93.
  • the seat of the container when it is placed vertically on a support 93 and is in contact with this support 93, is not continuous along the perimeter of the bottom of the container 91.
  • the document FR 3005034 discloses a container of oblong transverse shape provided with a continuous seat.
  • Flat containers provided with a continuous laying plane can be obtained by blowing a blank into a mold accompanied by boxing the bottom.
  • the container cavity mold comprises a mobile boxing insert in the bottom of the mold. Once the container has been formed or during the formation of this container, the boxing insert deforms the bottom, which makes it possible to obtain a continuous laying plane.
  • This technique requires the use of a boxing insert and it is sought to obtain such a continuous laying plane without implementing a boxing technique, that is to say, obtaining a continuous laying plane only by blowing or stretch-blow molding a blank in a mould.
  • the object of the invention is in particular to overcome the drawbacks of the prior art.
  • the invention aims to provide a flattened container whose oval bottom has the ability, by its shape, to have a continuous laying plane and to present significant stability when it is placed upright on its bottom.
  • the invention also aims to provide such a container which can be obtained using a simple manufacturing technique, not necessarily requiring the use of a boxing insert.
  • a plastic container provided with a body and a bottom in the extension of the body at a lower end. of the body, the bottom presenting a oblong curved contour and comprising: a seat forming a laying plane of the container, the laying plane having an oblong curved shape extending along a longitudinal median axis and a transverse median axis, the seat having a width, of a value w, between its distal ends along the transverse midline; a vault extending from the seat to a central area of the bottom, the vault defining a concavity from the outside of the container; the container having a central axis on which the central zone is centered, the container where the seat has reductions in width each located on one side of the longitudinal median axis, at least at the level of the intersection between the seat and the transverse median axis, and where the vault has for each reduction in width of the seat, on the one
  • the container according to the invention has significant stability when it is placed upright on its bottom, while being able to be obtained by means of a simple blow molding or a stretch-blow molding of a blank in a mold in the shape of the container, with no moving parts.
  • the reliefs of the bottom of the mold corresponding to the curved portions make it possible to slow down the expansion of the plastic material of the blank on either side of the central zone of the bottom, along the axis transverse median, while the expansion of the plastic material is not hindered on either side of the central zone along the longitudinal median axis.
  • the stretching of the plastic material during the blowing is contained by the presence of the reliefs of the bottom of the mold resulting from the curved portions to avoid too much accumulation of plastic material at the lateral ends (long sides) of the bottom of the container compared to its longitudinal ends (short sides).
  • recesses are complementary to the curved portions in that they make it possible to prevent, during the formation of the bottom of the container, a surplus of plastic material from reaching the level of the seat and causing instability of the container, and Contribute to the good resistance of the support of the bottom vis-à-vis the risk of subsidence after the latter has been formed.
  • the vault has, between the central zone and a reduction in the width of the seat, at least one bead extending longitudinally and forming, from the outside of the container, a concavity in the vault.
  • the beads participate in slowing down the expansion of the plastic material during the blow molding of the container.
  • the bead has a proximal front face of the central zone, a distal rear face of the central zone, and, between them, a plate, the rear face curving in the direction of the seat, the rear face forming all or part of one of the curved portions.
  • the reliefs of the bottom of the mold corresponding to this shape of the beads make it possible to effectively slow down the progression of the plastic material during the forming of the container.
  • This progression of the plastic material is significantly slowed down by the relief corresponding to the front face of the bead, slowed down less significantly by the relief corresponding to the plate, and then this progression is continued and accompanied by means of the relief corresponding to the rear face which curves towards the seat.
  • the reliefs of the bottom of the mold corresponding to each bead make it possible to retain the plastic material in the course of expansion and help to unroll this material well to form the bottom. Also, the reliefs of the mold corresponding to the beads increase the development of the bottom shape along the transverse median axis.
  • the relief of the mold corresponding to the height of the front face, of the plate, and in other words the height of each bead, contributes to increasing the length of the developed.
  • the offset makes it possible to increase the development presented by the relief of the bottom of the mold corresponding to each bead.
  • the reliefs of the mold corresponding to the offsets help to spread the plastic material well during the blow molding.
  • the presence of the offset between the plate and its rear face makes it possible to better hold the specific shape of each bead. This avoids a collapse of the plastic material following the blow molding of the container.
  • the shape of the rear face is then optimized to allow an optimized distribution of the plastic material along the relief of the mold corresponding to the rear faces of the beads, then at the level of the seat.
  • the bottom comprises, between the beads which face each other, centered on the central zone of the bottom, a dome, the profile of which, parallel to the laying plane, is an oblong shape elongated along the axis ML and which creates, from the outside of the container, a concavity in the vault.
  • Such a dome also designated by the English expression “push-up”, makes it possible to help stretch the plastic material when it reaches the bottom of the mould.
  • the seat has a width, of a value w, between the distal ends of the seat along the transverse median axis, with 30% w ⁇ y ⁇ 45% w.
  • the stretching of the plastic material to both ends of the arch along the longitudinal axis may not take place correctly.
  • the plastic material risks not reaching the seat in sufficient quantity at the level of its lateral parts.
  • the branches contribute to a good distribution of the plastic material, by increasing the development between the central point and the periphery of the bottom around the beads, as well as to stiffen the bottom.
  • the adapted width of the beads makes it possible to accommodate the branches on the bottom.
  • the branches are then too far apart with respect to the transverse central axis, and the plastic material cannot be stretched sufficiently to reach the ends of the seat along the central axis longitudinal.
  • the arms are too tight with respect to the transverse median axis and there is too much amorphous material on the seat at the level of its long sides, thus generating stability problems.
  • the length of the plate of each bead is such that the plastic material does not unroll sufficiently in the direction of the corners of the bottom.
  • the bottom comprises, between the beads which face each other, centered on the central zone of the bottom, a dome, the profile of which, parallel to the laying plane, is a oblong shape elongated along the axis ML and which creates, from the outside of the container, a concavity in the vault, each curved portion extending to the dome.
  • the dome has, along the longitudinal median axis, a maximum length, of a value x, along the transverse median axis, a maximum width (Y), of a value y, with 2 y ⁇ x ⁇ 3, 5 y, preferably with 2.4y ⁇ x ⁇ 3 y.
  • the curved portion has a grainy texture.
  • each recess has a length, with a value zero, along the longitudinal median axis
  • the main effect of the recesses is to avoid that, if the container is too heavy, there is then a subsidence of the bottom on the laying plane, and more precisely a subsidence of the amorphous material.
  • the recesses thus make it possible to mask this sagging and prevent this sagging reaching the laying plane and causing a stability problem.
  • the plate has a length, with a value p, along the longitudinal median axis
  • the length of the plate of each bead is such that the plastic material does not unroll sufficiently in the direction of the corners of the bottom.
  • the invention also relates to a mold for the manufacture of a container by blow molding or stretch-blow molding of a plastic material blank, the mold comprising a mold base having an upper forming surface which corresponds to the imprint of the bottom of the container as described above.
  • the following description of the characteristics of the container 1 according to the invention also applies to the characteristics of a mold making it possible to manufacture this container 1, understanding that the mold has an imprint intended to give its final shape to the container and of complementary shape.
  • the mold is a mold for the manufacture by blow molding or stretch-blow molding of a plastic blank.
  • the mold according to the invention comprises a mold bottom which has an upper surface complementary to the imprint of a bottom of the container 1 as described below.
  • the container 1 according to the invention is a plastic container. More specifically, it is a polyethylene terephthalate container.
  • This container 1 is provided with a body 11 and a bottom 12 in the extension of the body 11 at a lower end of the body 11.
  • the container 1 according to the invention is a so-called “flat” container.
  • the bottom 12 has, in a bottom view, an oblong curved contour.
  • the container 1 has smaller dimensions in its width than in its length.
  • the bottom 12 thus comprises two long sides and two short sides.
  • the container 1 has a central axis C.
  • the body 11 of the container extends along the central axis C from the bottom 12.
  • the central zone 23 of the bottom 12 is more specifically centered on the central axis C.
  • the arch 22 delimits a concavity from the outside of the container 1.
  • the bottom 1 comprises, between the beads 3 which face each other, centered on the central zone 23 of the bottom 12, a dome 5, the profile of which, parallel to the laying plane, is an oblong shape elongated along the axis ML and which creates, from the outside of the container 1, a concavity in the vault 12, each curved portion 220 extending to the dome 5.
  • the seat 21 for its part forms a laying plane 210 of the container 1 as illustrated by the picture 3 .
  • This laying plane 210 has an oblong curved shape.
  • the shape adopted by the laying plane 210 can also be described as oval.
  • the shape of the laying plane 210 is closed as is the case in the embodiments illustrated by the figures 2 to 9 .
  • the laying plane of the container 1 presented by the seat 21 is continuous, that is to say that all around the bottom 12 when the container 1 is placed on a support, the entire seat is in contact with the support.
  • the laying plane 210 formed by the seat 21 extends along a longitudinal center axis ML and a transverse center axis MT.
  • the longitudinal central axis ML and the transverse central axis MT intersect along the central axis C of the container 1.
  • the laying plane 210 is not closed. Indeed, the seat 21 has two constrictions located at the ends of the seat along the longitudinal center axis ML.
  • the seat 21 has a length T, of a value t, between its distal ends along the longitudinal median axis ML, that is to say at the meeting of the longitudinal median axis ML with an outer contour 211 of seat 21.
  • the seat 21 also has a width W, of a value w, between the distal ends along the transverse median axis MT, that is to say at the meeting of the transverse median axis MT with the contour exterior 211 of the seat 21.
  • the bottom 12 extends along the longitudinal center axis ML and along the transverse center axis MT.
  • This bottom 12 has a larger dimension along the longitudinal center axis ML than along the transverse center axis MT, thus giving the laying plane an oblong curved shape.
  • the bottom 12 of the container 1 has a planar symmetry along a first plane in which is inscribed the transverse median axis MT and the central axis C of the container 1, and a planar symmetry along a second plane in which is inscribes the longitudinal median axis ML and the central axis C of the container 1.
  • the seat 21 has reductions in width each located on one side of the longitudinal centerline (ML).
  • Each reduction in width extends longitudinally at least opposite the central zone 23 along the transverse median axis MT, each on one side of the longitudinal median axis ML.
  • these reductions in width extend along the two long sides of the bottom 12 along the longitudinal central axis ML, on either side of the transverse central axis MT, and at least on one distance corresponding to an orthogonal projection of the central zone 23 on the longitudinal median axis ML.
  • the recesses 4 each delimit, according to a cross section, a cavity from the outside of the container 1.
  • each curved portion 220 extends directly from said recess 4 in the direction of the central zone 23, and has, in a section plane passing through the central axis C and the transverse axis MT, an arcuate section s inscribed in a circle Ce whose center is located at a distance DC, of a value dc, from the central axis C, measured along the transverse median axis MT.
  • Each circle Ce has a radius Rc which may for example be equal to approximately 5.6 mm.
  • the curved portions 220 correspond to parts of the bottom 12 having an accentuated curvature from the recess and in the direction of the central part 23 with respect to conventional vaults according to the prior art.
  • the arch 22 has two beads 3, each bead 3 incorporating, as detailed below, a curved portion 220.
  • the vault 22 further comprises four branches flanking each bead 3 in pairs.
  • the beads 3 are located between the seat width reduction 21 and the central zone 23.
  • the beads 3 frame the central zone 23 along the transverse median axis MT, and thus frame the dome 5.
  • the beads 3 form, from the outside of the container (1), a concavity in the vault 22.
  • the beads 3 thus have a shape in relief extending inside the volume of the container 1.
  • each bead 3 joins one of the curved portions 220.
  • the plate 32 has a length P, of a value p, along the longitudinal median axis ML.
  • the bead (3), at the level of the front face (31), has a height (H), of a value h.
  • Each bead 3 further has an offset 33 interposed between its plate 32 and its rear face 34.
  • the rear face 34 extends more precisely from the offset 33.
  • each bead 3 illustrated by the figure 7 the front face 31, the plate 32 and the offset 33 together take on a crenellated shape.
  • the front face 31 rises from the arch 22 towards the plate 32, and the offset 33 descends from the plate 32 towards the arch 22.
  • the bead (3) has a height (G), of a value g.
  • the initial portion 341 extends parallel to the vault 22, and more specifically to an underlying projection of the vault 22.
  • a tangent to the end portion 342 has for its part, at its intersection with the seat 21, an angle ⁇ , of a value a, with a straight line perpendicular to the transverse median axis MT and inscribed in a median plane of the bottom 12 along a cross section of the bottom 12.
  • each curved portion 220 has a grainy texture.
  • These curved portions 220 can nevertheless have a smooth texture.
  • the vault 22 has recesses 4.
  • These recesses 4 delimit, according to a cross section illustrated by the figure 7 , a cavity from the outside of the container 1.
  • the recesses 4 have a length E, of zero value, along the longitudinal center axis ML.
  • each reduction in width of the seat 21 has a width U, of a value u, and the seat 21 has a residual width O, of a value o.
  • the arch 22 comprises branches 6.
  • Each branch 6 extending along an axis of extension EX from the dome 5 to the seat 21, forming a flattened protrusion projecting into the concavity created by the vault 22 from the outside of the container 1.
  • each branch 6 also has a central notch 61 creating a concavity in the vault 22, from the outside of the container.
  • the axes of extension EX of these two branches 6 are intersect along the longitudinal median axis ML at a point R.
  • the two points R resulting from the respective intersections of the branches 6 are then spaced apart from each other by a distance Z, by a value z.
  • each axis of extension EX intersects the longitudinal median axis ML by forming an angle ⁇ (BETA), of a value b.
  • the vault 22 includes a dome 5.
  • This dome 5 has a profile, parallel to the laying plane, which is an oblong shape elongated along the axis ML.
  • the dome 5 creates, from the outside of the container 1, a concavity in the vault 12.
  • the bottom 12 does not include beads 3 or branches 6.
  • each single arcuate section of the curved portion 220 extends from a recess 4 to the dome 5.
  • the initial portion 221 extends parallel to the transverse median axis MT.
  • a tangent to the end portion 222 has for its part, at the level of the intersection of said end portion 222 with the seat 21 and similarly to the rear face 34 of the first and second embodiments, an angle ⁇ , of a value a, with a straight line perpendicular to the transverse median axis MT and inscribed in a median plane of the bottom 12 according to a cross section of the bottom 12.
  • the preceding rules make it possible to obtain a bottom 12 having a continuous seat for a flat container 1, that is to say which comprises a bottom 12 with an oval outline, from a plastic blank and thanks to a manufacturing process by blow molding or stretch-blow molding, without boxing the blank.
  • the bottom 12 of the container 1 according to the invention has, thanks to its characteristics, a specific distribution of the plastic material following the blowing of the blank in its transverse distribution.
  • This specific distribution makes it possible to have a similar quantity of plastic material at the level of the seat over the entire periphery of the seat. Indeed, the bottom 12 does not present any accumulation of plastic material at the level of the seat at the level of the short sides of the container 1.
  • the quantity of plastic material located in the seat at the transverse level does not constitute an extra thickness likely to induce imbalances or structural instability of the container compared to the quantity of material located at the longitudinal ends of the seat. .

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Table Devices Or Equipment (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Claims (19)

  1. Behälter (1) aus Kunststoff, der über einen Körper (11) und einen Boden (12) in der Verlängerung des Körpers (11) an einem unteren Ende des Körpers (11) verfügt, wobei der Boden (12) eine längliche gekrümmte Kontur aufweist und Folgendes beinhaltet:
    - eine Basis (21), die eine Abstellebene (210) für den Behälter bildet, wobei die Abstellebene eine längliche gekrümmte Form aufweist, die sich gemäß einer Längsmittelachse (ML) und einer Quermittelachse (MT) erstreckt, wobei die Basis (21) zwischen ihren distalen Enden entlang der Quermittelachse (MT) eine Breite (W) mit einem Wert w aufweist;
    - eine Wölbung (22), die sich von der Basis (21) bis zu einem zentralen Bereich (23) des Bodens (12) erstreckt, wobei die Wölbung (22) von der Außenseite des Behälters (1) her eine Konkavität begrenzt;
    wobei der Behälter (1) eine zentrale Achse (C) aufweist, auf die der zentrale Bereich (23) zentriert ist, dadurch gekennzeichnet, dass
    die Basis (21) Breitenreduzierungen aufweist, die sich, mindestens im Bereich der Schnittstelle zwischen der Basis (21) und der Quermittelachse (MT), jeweils auf einer Seite der Längsmittelachse (ML) befinden,
    und dass
    die Wölbung (22) für jede Breitenreduzierung der Basis (21) Folgendes aufweist: einerseits einen Absatz (4), der die Breitenreduzierung der Basis (21) ausfüllt und von der Außenseite des Behälters (1) her eine Konkavität bildet, und andererseits einen gekrümmten Abschnitt (220), der sich von dem Absatz (4) direkt in Richtung des zentralen Bereichs (23) erstreckt und in einer Schnittebene, die durch die zentrale Achse (C) und die Querachse (MT) verläuft, einen bogenförmigen Querschnitt aufweist, der sich in einen Kreis (Cc) einfügt, dessen Zentrum sich entlang der Quermittelachse (MT) in einem Abstand (DC) mit einem Wert dc von der zentralen Achse (C) befindet, mit 0,1w ≤ dc ≤ 0,3w, vorzugsweise mit dc = 0,2w.
  2. Behälter (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Wölbung (22) zwischen dem zentralen Bereich (23) und einer Breitenreduzierung der Basis (21) mindestens einen Wulst (3) aufweist, der sich längs erstreckt und von der Außenseite des Behälters (1) her eine Konkavität in der Wölbung (22) bildet.
  3. Behälter (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Wulst (3) eine zu dem zentralen Bereich (23) proximale Vorderseite (31), eine zu dem zentralen Bereich distale Rückseite (34) und dazwischen ein Plateau (32) aufweist, wobei sich die Rückseite (34) in Richtung der Basis (21) krümmt, wobei die Rückseite (34) den gesamten oder einen Teil von einem der gekrümmten Abschnitte (220) bildet.
  4. Behälter (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Wulst (3) im Bereich der Vorderseite (31) eine Höhe (H) mit einem Wert h aufweist, mit 0,7 mm ≤ h ≤ 2,3 mm und vorzugsweise mit h = 1,5 mm.
  5. Behälter (1) nach einem beliebigen der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass der Wulst (3) einen Versatz (33) aufweist, der zwischen sein Plateau (32) und seine Rückseite (34) eingefügt ist, und dass die Vorderseite (31), das Plateau (32) und der Versatz (33) gemäß einem Querschnitt gemeinsam eine gewellte Form bilden und dass im Bereich des Versatzes (33) der Wulst (3) eine Höhe (G) mit einem Wert g aufweist, mit g < h und vorzugsweise mit g = 0,33h.
  6. Behälter (1) nach einem beliebigen der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Boden (12) zwischen den Wulsten (3), die sich gegenüberliegen, zentriert auf den zentralen Bereich (23) des Bodens (12) eine Kuppel (5) beinhaltet, deren Profil parallel zu der Abstellebene eine längliche Form ist, die entlang der Achse ML langgestreckt ist, und die von der Außenseite des Behälters (1) her eine Konkavität in der Wölbung (12) erzeugt.
  7. Behälter (1) nach Anspruch 2 und einem beliebigen der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass die Wölbung (22) vier Arme (6) beinhaltet, die jeden Wulst (3) jeweils zu zweit einrahmen, wobei sich jeder Arm (6) gemäß einer Erstreckungsachse (EX) von der Kuppel (5) bis zu der Basis (21) erstreckt und dabei von der Außenseite des Behälters (1) her einen Vorsprung von der Wölbung (22) bildet, und dass für jeden Wulst (3) das Plateau (32) eine Länge (P) mit einem Wert p gemäß der Längsmittelachse (ML) und die Basis (21) eine Länge (T) mit einem Wert t zwischen ihren distalen Enden entlang der Längsmittelachse (ML) aufweist, mit 20% t ≤ p ≤ 40% t, vorzugsweise mit p = 25% t.
  8. Behälter (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass gemäß einer Unteransicht des Bodens (12) jede Erstreckungsachse (EX) eines Arms (6) mit der Quermittelachse (MT) einen Winkel (β) mit einem Wert b bildet, mit 50° ≤ b ≤ 63°, vorzugsweise mit b = 57°, und dass sich die Erstreckungsachsen (EX) von zwei der Längsmittelachse (ML) gegenüberliegenden Armen (6) an einem Punkt (R) auf der Längsmittelachse kreuzen, wobei die zwei Punkte (R) um einen Abstand (Z) mit einem Wert z voneinander beabstandet sind, mit 0,12 ≤ z/t ≤ 0,35 und vorzugsweise mit z/t = 0,27.
  9. Behälter (1) nach Anspruch 2, dadurch gekennzeichnet, dass der Boden (12) zwischen den Wulsten (3), die sich gegenüberliegen, zentriert auf den zentralen Bereich (23) des Bodens (12) eine Kuppel (5) beinhaltet, deren Profil parallel zu der Abstellebene eine längliche Form ist, die entlang der Achse ML langgestreckt ist, und die von der Außenseite des Behälters (1) her eine Konkavität in der Wölbung (12) erzeugt, wobei sich jeder gekrümmte Abschnitt (220) bis zu der Kuppel (5) erstreckt.
  10. Behälter (1) nach einem beliebigen der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass die Kuppel (5) Folgendes aufweist: gemäß der Längsmittelachse (ML) eine maximale Länge (X) mit einem Wert x; gemäß der Quermittelachse (MT) eine maximale Breite (Y) mit einem Wert y, mit 2y ≤ x ≤ 3,5y, vorzugsweise mit 2,4y ≤ x ≤ 3y.
  11. Behälter (1) nach einem beliebigen der Ansprüche 2 bis 10, dadurch gekennzeichnet, dass gemäß einer Unteransicht des Bodens (12) der Boden (12) Folgendes aufweist: einen Abstand (D) mit einem Wert d entlang der Quermittelachse (MT) zwischen der Mitte des Plateaus (32) jedes Wulsts (3) und einem zentralen Punkt (C), an dem sich die Quermittelachse (MT) und die Längsmittelachse (ML) kreuzen; einen Abstand (L) mit einem Wert 1 zwischen dem zentralen Punkt (C) und jedem distalen Ende der Basis (21) entlang der Quermittelachse (MT), mit 40% 1 ≤ d ≤ 65% 1, vorzugsweise mit d = 50% 1.
  12. Behälter (1) nach einem beliebigen der Ansprüche 2 bis 11, dadurch gekennzeichnet, dass für jeden Wulst (3) und gemäß einem Mittelquerschnitt des Bodens (12) die Rückseite (34) Folgendes aufweist: einen Anfangsabschnitt (341), der an das Plateau (32) angrenzt, wobei sich der Anfangsabschnitt (341) parallel zu der Wölbung (22) erstreckt; einen Endabschnitt (342), der an die Basis (21) angrenzt, wobei der Endabschnitt (342) an seiner Schnittstelle mit der Basis (21) einen Winkel mit einem Wert a mit einer Geraden aufweist, die zu der Quermittelachse (MT) senkrecht ist und in den Mittelquerschnitt des Bodens (12) eingefügt ist, mit 12,5° ≤ a ≤ 35°, vorzugsweise 17,5° ≤ a ≤ 26°.
  13. Behälter (1) nach einem beliebigen der Ansprüche 2 bis 12, dadurch gekennzeichnet, dass für jeden Wulst (3) das Plateau (32) eine Länge mit einem Wert p gemäß der Längsmittelachse (ML) und die Basis (21) eine Länge mit einem Wert t zwischen ihren distalen Enden entlang der Längsmittelachse (ML) aufweist, mit 40% t ≤ p ≤ 65% t, vorzugsweise mit p = 55% t.
  14. Behälter (1) nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeder gekrümmte Abschnitt (220) eine körnige Struktur aufweist.
  15. Behälter (1) nach einem beliebigen der vorhergehenden Ansprüche, gekennzeichnet durch Folgendes: jeder Absatz (4) weist eine Länge (E) mit einem Wert e entlang der Längsmittelachse (ML) auf; - die Basis (21) weist eine Länge (T) mit einem Wert t zwischen ihren distalen Enden entlang der Längsmittelachse (ML) auf; mit 65% t ≤ e ≤ 75% t, vorzugsweise mit e = 70% t.
  16. Behälter (1) nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass gemäß der Quermittelachse (MT) jede Breitenreduzierung der Basis (21) eine Breite (U) mit einem Wert u aufweist, wobei die Basis (21) eine Restbreite (O) mit einem Wert o aufweist, mit 10% (o+u) ≤ u ≤ o, vorzugsweise mit u = o.
  17. Behälter (1) nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Basis (21) eine Breite mit einem Wert w zwischen den distalen Enden der Basis entlang der Quermittelachse (MT) aufweist, mit 30% w ≤ y ≤ 45% w.
  18. Behälter (1) nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Basis (21) eine Länge mit einem Wert t zwischen ihren distalen Enden entlang der Längsmittelachse (ML) aufweist, mit 25% t ≤ x ≤ 70% t, vorzugsweise mit x = 54% t.
  19. Form zur Fertigung eines Behälters (1) durch Blasen oder Streckblasen eines Kunststoff-Vorformlings, wobei die Form einen Formboden beinhaltet, der eine Formoberfläche aufweist, die dem Abdruck des Bodens (12) des Behälters (1) nach einem beliebigen der vorhergehenden Ansprüche entspricht.
EP22164654.0A 2021-04-13 2022-03-28 Plastikbehälter mit flachem boden Active EP4074614B1 (de)

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FR2103800A FR3121662B1 (fr) 2021-04-13 2021-04-13 Récipient plastique à fond plat

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US3870181A (en) * 1973-02-12 1975-03-11 Monsanto Co Molecularly oriented bottle
US4197954A (en) * 1978-10-05 1980-04-15 Ethyl Development Corporation Container
CA2093996C (en) * 1992-05-04 2005-01-11 Bobby Earl Green Microwaveable squeeze bottle for cheese sauce and the like
US8123059B2 (en) * 2007-05-29 2012-02-28 Yoshino Kogyosho Co., Ltd Synthetic resin bottle having two depressions defining a grip
FR2987034B1 (fr) * 2012-02-16 2014-06-20 Sidel Participations Recipient aplati comprenant un fond voute a assise carree
FR3005034B1 (fr) * 2013-04-24 2016-01-15 Sidel Participations Recipient aplati comprenant un fond voute a assise variable

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US20230312157A1 (en) 2023-10-05
EP4074614A1 (de) 2022-10-19
US20220324603A1 (en) 2022-10-13

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