EP2925615B1 - Récipient en matière plastique - Google Patents

Récipient en matière plastique Download PDF

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Publication number
EP2925615B1
EP2925615B1 EP13779141.4A EP13779141A EP2925615B1 EP 2925615 B1 EP2925615 B1 EP 2925615B1 EP 13779141 A EP13779141 A EP 13779141A EP 2925615 B1 EP2925615 B1 EP 2925615B1
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EP
European Patent Office
Prior art keywords
plastic container
container according
grooves
transition region
plastic
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
EP13779141.4A
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German (de)
English (en)
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EP2925615A1 (fr
Inventor
Christian Dornbach
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.)
Alpla Werke Alwin Lehner GmbH and Co KG
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Alpla Werke Alwin Lehner GmbH and Co KG
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Publication of EP2925615A1 publication Critical patent/EP2925615A1/fr
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Publication of EP2925615B1 publication Critical patent/EP2925615B1/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
    • 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
    • B65D1/0207—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
    • 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

Definitions

  • the invention relates to a plastic container, in particular a plastic bottle, for the storage of liquid products under a slight overpressure.
  • plastic containers in particular, plastic bottles are used.
  • fluid substances such as drinks, oil, cleaning utensils, cosmetics, etc.
  • plastic bottles are used for the packaging of fluid substances, such as drinks, oil, cleaning utensils, cosmetics, etc.
  • the low weight and the lower costs play a significant role in this substitution.
  • the use of recyclable plastic materials and the overall more favorable overall energy balance in their production also contribute to the consumer's acceptance of plastic containers, in particular of plastic bottles.
  • Plastic containers in particular plastic bottles, have a container body, to whose one longitudinal end a container neck usually adjoins, which is equipped with at least one pouring opening.
  • the container body often has a regular, for example, circular or substantially square cross-sectional area. He can also have an oval cross-section.
  • At the other end of the container body includes a bottom section.
  • the bottom section comprises a container bottom and a laterally raised edge region, which merges into the container body.
  • the plastic container may be produced in an extrusion blow molding process from a continuous or discontinuously extruded single- or multi-layer plastic hose.
  • a portion of the extruded plastic tube is introduced into the mold cavity of a blow molding tool and inflated by a gas introduced with excess pressure, usually air, according to the mold cavity.
  • the blown air is supplied by means of a Kalibrierblasdorns, which is retracted into the located in the mold cavity plastic tube section.
  • the molded and cooled plastic container is removed from the mold.
  • the plastic container may also be made in a single or multi-stage stretch blow molding process.
  • an elongated preform preform
  • the preform is inserted in a further step in the mold cavity of a blow mold and inflated by a gas introduced with excess pressure, usually air, according to the mold cavity.
  • the preform is additionally axially stretched by means of a retracted stretching mandrel.
  • the finished stretch-blown and cooled plastic container according to the mold cavity is finally removed from the mold.
  • a single-stage stretch blow molding process is used when the further processing of the still hot preform takes place immediately after the production of the preform.
  • the preform produced is further processed temporally and / or spatially separately, wherein it must be reheated for the actual stretch blow molding process.
  • liquid products are stored in plastic containers under a slight overpressure.
  • This slight overpressure is produced, for example, by filling the plastic container with nitrogen gas after filling.
  • the nitrogen displaces the oxygen, which could otherwise lead to oxidation of the contents and thus reduce the shelf life of the bottled product.
  • This overpressure is for example 0.3 to 0.5 bar and can reach up to 1.5 bar.
  • the overpressure there is a certain risk that the container body deforms uncontrollably, for example bulges outwards, and thereby affects the stability of the container.
  • plastic containers which are equipped in the container body with weakened areas where the container body can deform to a limited extent.
  • the remaining container body is formed with a relatively large wall thickness.
  • Such plastic containers equipped with deformable sections in the container body are relatively complex to manufacture.
  • the deformable sections often severely limit the space available for labeling the plastic container. Therefore, alternative approaches try to counteract a deformation of the container body in that the container bottom with more or less controlled deformable areas is trained.
  • this membrane-like container bottoms are known, which have a plurality of concentrically arranged, hingedly interconnected areas which are curved inwards and can evert outwards due to an increased internal pressure.
  • the hinged interconnected areas of the container bottom are arranged between feet, which are formed in the edge region of the bottom portion.
  • feet are formed in the edge region of the bottom portion.
  • plastic containers with five or more feet are known. Apart from the relatively complex formation of its bottom portion of the container due to the feet on a larger height, without thereby gaining much of the internal volume.
  • the feet must be formed with a relatively large wall thickness, since the weight of the filled container is now distributed over a significantly reduced area.
  • Object of the present invention is therefore to remedy the disadvantages of the known from the prior art plastic containers, especially plastic bottles. It is intended to provide a plastic container for the storage of liquid products under a slight overpressure, the container body is largely fully available for labeling.
  • the plastic container should have a bottom portion which has the largest possible footprint. On feet in the edge region of the bottom section should be able to do without. In addition, the conditions for further material savings in the production of the plastic container to be created.
  • the invention provides a plastic container, in particular for the storage of liquid products under a slight overpressure, which creates a container body having a longitudinal axis, at one longitudinal end of which a container neck adjoins, which is equipped with at least one pouring opening.
  • a container body having a longitudinal axis, at one longitudinal end of which a container neck adjoins, which is equipped with at least one pouring opening.
  • At the other longitudinal end of the container body includes a bottom portion having a container bottom and a side raised edge portion which merges into the container body.
  • the container bottom has a concave portion which is curved in the direction of a container interior delimited by the container body, the circumference of which is connected via an axially projecting stepped transition region to a support surface which opens into the laterally raised edge region.
  • the base and at least a portion of the stepped transition region are interrupted by a first number of grooves.
  • a second number of panel-like protrusions is formed, which extend substantially between the stepped transition region and
  • the plastic container according to the invention has a bottom section whose combination of features makes it possible to fulfill the sometimes contradictory tasks.
  • the concave portion which may be formed dome-shaped, is connected via the stepped transition region with the base.
  • the footprint may be formed substantially annular, when the plastic container has a substantially circular cross-section.
  • the base surfaces have the geometric shape, which also has the cross section in the region of the laterally raised edge region in the container body.
  • the stepped transition region has a hinge-like function, which allows for a small deformation of the concave portion at elevated pressure.
  • the panel-like projections again give the concave portion increased rigidity.
  • the at least one subregion of the stepped transition region and the surface-intersecting grooves impart a greater rigidity to the bottom section as a whole.
  • the stepped transition region may consist, for example, of two stages, in which a first step adjoining the base surface is interrupted by the groove, and the second step adjacent to the concave section is not interrupted.
  • the grooves can also interrupt the entire stepped transition region, so reach into the concave section.
  • the grooves provide for a limitation of the hinge-like function, since the graded transition region is not continuous or circumferential, but is divided by the grooves into individual segments. By the size and the number of grooves the stiffness of the floor section can be influenced.
  • the grooves may be distributed uniformly or non-uniformly along the circumference.
  • the combination of stiffness enhancing and in turn promoting features imparts to the bottom section just the required stability to withstand low overpressures without deformation and, on the other hand, to allow limited deformation of the container bottom at elevated internal pressures. This ensures that the container body itself remains free of deformation.
  • internal pressures of up to 1.5 bar, preferably from 0.3 to 0.5 bar, above ambient pressure.
  • the base of the plastic container is interrupted only by the grooves.
  • the weight of the filled, upright container is distributed over a relatively large area.
  • This measure together with the stiffness-increasing features in the form of the grooves and the panel-like projections creates the conditions for a reduction in the wall thickness, without suffering from the overpressure resistance or compression strength of the plastic container.
  • the container weight can be reduced by up to 2 g, for example from 17.2 g to 15.2 g, without there being any appreciable impairment of the required strengths.
  • the wall thickness of the plastic container for example, equal to or less than 0.2 mm. Except this may be a closure thread in the neck area.
  • Such plastic containers are preferably made from heated preforms in a stretch blow molding process.
  • the grooves of the plastic container can extend substantially along the longitudinal axis in the laterally raised edge region of the bottom portion. In this way, the rigidity or stability of the container portion can be additionally increased.
  • the first number of grooves and the second number of panel-like projections may be different from each other. Due to the second number of panel-like protrusions, the rigidity of the concave portion of the bottom portion can be independent of the rigidity of the raised portion Rand Scheme be specified. In most cases, however, the first number of grooves and the second number of panel-like projections will be the same in order to give the plastic container, in particular the container bottom, a pleasing appearance.
  • the concave portion of the container bottom can enclose a central dome extending into the container interior.
  • the central dome has a much greater curvature than the dome-shaped concave portion.
  • the rigidity of the now annular concave portion is further increased.
  • the apex area of the central dome serves as an attachment for a mandrel. As a result, overly rapid cooling and freezing of the bottom section in the contact area with the stretching mandrel can be avoided.
  • the panel-like projections each end before a transition of the concave portion to the central dome.
  • a material accumulation during the biaxial drawing process can thereby be avoided.
  • an axial height bridged between the concave section and the standing surface by means of the stepped transition region is 0.2 mm to 10 mm, preferably 0.5 mm to 5 mm, particularly preferably 1 mm.
  • a radial extension of the stepped transition region extending substantially transversely to the longitudinal axis of the plastic container is approximately 0.2 mm to 10 mm, preferably 0.5 mm to 5 mm, particularly preferably 1.3 mm.
  • the grooves extending from the stepped transition region into the laterally raised edge region may have a depth which is 0.5 mm to 5 mm, preferably 1 mm to 3 mm, particularly preferably 2 mm.
  • the grooves may have a certain depth which is equal to or greater than an axial height of the stepped transition region extending between the concave portion and the standing surface.
  • the groove bottom seen in the direction of the pouring opening, is lower than the outwardly facing surface of the concave section.
  • the grooves can extend into the concave portion and thus further enhance the stability of the container bottom.
  • the grooves have an opening angle which is 20 ° to 50 °, preferably 27 ° to 43 °, particularly preferably 35 °.
  • the panel-like projections serve to further stiffen the concave portion of the container bottom. They may have a relatively large surface area and have a greatest extent in the circumferential direction, measured in the vicinity of the stepped transition, which is 2 mm to 10 mm, preferably 5 mm to 8.5 mm, particularly preferably 7.25 mm.
  • the panel-like protrusions may have a maximum protrusion with respect to the concave portion, which is 0.5 mm to 5 mm, preferably 1.3 mm to 3.8 mm, particularly preferably 2.4 mm.
  • a balanced distribution of the total weight of the filled plastic container results already in that a plastic container which has a substantially circular cross-section at least within the laterally raised edge region has a standing surface with a median stand diameter, the 60% to 80% of an outer diameter of the bottom portion at the transition of the raised edge region to the container body.
  • the footprint can have a radial width that is 5% to 15% of their average standing diameter.
  • the grooves do not have to end exactly at the graduated transition. You can also have a extending in the direction of the longitudinal axis of the plastic container outlet, which projects from 0.2 mm to 4 mm into the concave portion. This can also contribute to the stiffening of the concave section.
  • the first number of grooves is odd.
  • the bottom portion of the plastic container having seven grooves which are distributed substantially uniformly over the circumference of the bottom portion.
  • the plastic container may have different cross sections. Preference is given to regular cross sections, such as circular or substantially square cross sections.
  • Such plastic containers are used for example for the storage of edible oil, in which the oxygen is displaced by nitrogen after filling.
  • the plastic container can be made in an extrusion blown from a continuously or discontinuously extruded plastic tube. Because of the higher achievable stretch hardening, the plastic container formed according to the invention is preferably produced in a stretch blow molding method from a previously produced elongate preform. The production of the preform or preform can be made to different. For example, injection molding, extrusion or extrusion blow molding are used for this purpose.
  • the plastic container 1 has a container body 2 with a longitudinal axis, at one longitudinal end of which a container neck 3 adjoins which has a pouring opening 4. At the other longitudinal end of the container body 2 includes a bottom portion 5, which comprises a container bottom 6 with a base 7 and a side raised edge portion 8, which merges into the container body 2.
  • the illustrated plastic container 1 is, for example, a plastic bottle for edible oil.
  • Such plastic containers 1 are usually produced in a stretch blow molding process from a prefabricated elongated preform or preform having a substantially circular cross section. The preform is usually produced in an injection molding process. It can also be produced, for example, in a flow molding process or in an extrusion blow molding process.
  • Fig. 2 shows a perspective view of the bottom portion 5.
  • This comprises the container bottom 6 and the side raised edge portion 8, which merges into the container body 2.
  • the container bottom 6 extends from a central region of the bottom section 5 to the standing surface 7 and encloses this with.
  • the container bottom 6 comprises a dome-shaped, curved into the container interior concave portion 9, which encloses an annular space in an inner space bounded by the container body 2 central dome 13.
  • a substantially annular formed, axially projecting stepped transition region 10 connects the concave portion 9 with the footprint 7.
  • the stepped transition region 10 and the footing 7 are in the illustrated embodiment of a first number, for example seven, substantially uniformly over the circumference of the bottom portion 5 distributed grooves 11 interrupted, which is substantially radially in the laterally raised edge portion 8 of the Floor section 5 extend.
  • the grooves 11 further extend into the dome-shaped concave portion 7.
  • the dome-shaped concave portion 7 of the container bottom 6 has a second plurality of panel-like projections 12 which are approximately radially stepped from a transition of the concave portion 7 into the central dome 13 Extend transition section 10 and end shortly before.
  • the panel-like projections 12 in the concave portion 7 are each arranged substantially centrally between two grooves 11. Accordingly, in the illustrated embodiment, the first number of grooves 11 and the second number of panel-like projections 12 are equal.
  • the stepped transition region 10 has a certain flexibility and fulfills for the dome-shaped concave portion 9 a kind of hinge function or Federfutation. If the inside of the container is too high, the concave portion 9 can be pressed radially and axially outward within predetermined limits, whereby radial and axial deformation of the container body 2 can be avoided by the spring function of the stepped transition region 10.
  • the grooves 11 limit the flexibility of the stepped transition region 10 and give the container bottom 6 in turn a greater rigidity. They also ensure in the area of the base 7 and in the side raised edge portion 8 for an increase in rigidity.
  • the combination of the listed features of the bottom section 5 on the one hand leads to the desired limited deformability of the container bottom 6 and on the other hand increases the rigidity of the same.
  • the deformability and the rigidity of the bottom portion 5 can be predetermined.
  • the conditions are created to reduce the wall thickness of the plastic container, without having to accept appreciable losses in terms of the mechanical strength of the bottom section 5 in purchasing.
  • Fig. 3 shows a further perspective view of the bottom portion 5 for explaining the geometrical dimensions of the stepped transition region 10 and the grooves 11th
  • the stepped transition region 10 connects the dome-shaped concave portion 9 with the footprint 7.
  • the stepped transition region 10 is connected to the dome-shaped concave portion 9 with a first circumference and to the base 7 with a second circumference opposite the first circumference.
  • a bridged by the stepped transition region 10 axial height is 0.2 mm to 10 mm, preferably 0.5 mm to 5 mm, more preferably about 1 mm.
  • the graded transition region 10 has at least one stage. However, it may also include two or more stages.
  • the grooves 11 extending from the graded transition region 10 into the raised edge region 8 of the bottom section 5 each have a depth t which is 0.5 mm to 5 mm, preferably 1 mm to 3 mm, particularly preferably 2 mm.
  • the grooves 11 have an opening angle ⁇ , which is 20 ° to 50 °, preferably 27 ° to 43 °, particularly preferably 35 °.
  • the panel-like projections provided with the reference numeral 12 have over the concave portion 9 a maximum axial projection 1, which is 0.5 mm to 5 mm, preferably 1.3 mm to 3.8 mm, particularly preferably 2.4 mm.
  • the stepped transition region 10 has a radial extent r, which is about 0.2 mm to 10 mm, preferably 0.5 mm to 5 mm, particularly preferably 1.3 mm.
  • the panel-like projections 12 in the concave portion 9 widen from the central dome 13 toward the stepped transition portion 10 and have at their widest point, adjacent to the stepped transition region 10, a width w which is about 2 mm to 10 mm, preferably 5 mm 8.5 mm, more preferably 7.25 mm.
  • the standing surface 7 has an average standing diameter d, which is 60% to 80% of an outer diameter D of the bottom section 5 at the transition of the raised edge region 8 to the container body 2.
  • the base can have a radial width b, which is about 5% to 15% of its average diameter d.
  • Fig. 4 further shows that the grooves 11 need not end exactly at the stepped transition region 10. They may also have an outlet 14 extending to the central dome 13, which protrudes into the concave portion 9 about 0.2 mm to 4 mm. This can also contribute to the stiffening of the concave portion 9.
  • the bottom portion 5 has an odd number of grooves 11 and panel-like projections 12.
  • the illustrated embodiment has seven grooves 11th on, which are approximately evenly distributed over the circumference of the bottom portion 5. Accordingly, seven panel-like projections 12 are formed in the concave portion 9, which are each arranged substantially centrally between two adjacent grooves 11.
  • Fig. 5 shows a side view of the bottom portion 5.
  • the outer diameter at the transition of the raised edge portion 8 of the bottom portion 5 to the container body 2 is in turn provided with the reference numeral D.
  • the average diameter of the base 7 carries the reference numeral d.
  • the axially cut representation of the bottom section 5 in Fig. 6 shows the central dome 13, which extends from the concave portion 9 in the container interior.
  • the axial extent of the central dome 13 corresponds approximately to an axial length of the raised edge portion 8 of the bottom portion 5.
  • the panel-like projections bear the reference numeral 12, the grooves are provided with the reference numeral 11.
  • the bottom portion 5 of the plastic container 1 formed according to the invention is designed such that it withstands slightly elevated internal pressures of up to 1.5 bar relative to the ambient pressure. Exceeding the slightly increased internal pressure due to higher ambient temperatures can be compensated by the limited flexible connection of the concave portion 9 of the container bottom 6. As a result, deformations of the container body 2 can be avoided.
  • the inventive combination of the features of the bottom portion 5, the conditions are created to reduce the wall thickness of the plastic container, in particular in its bottom portion 5, without thereby a significant loss in terms of strength, in particular the stiffness of the plastic container must be accepted.
  • the weight of known plastic containers, especially plastic bottles, for the storage of edible oil from originally 17.2 g to 15.2 g can be reduced.
  • the invention is not limited to the illustrated embodiment of a plastic container, in particular a plastic bottle for the storage of edible oil.
  • inventive combination of features in the formation of the plastic container, in particular its bottom portion is different Types of plastic containers of advantage.
  • Such plastic containers may have different cross sections in the bottom section. Preference is given to regular cross sections, such as circular or substantially square cross sections.
  • the plastic container can be made in an extrusion blown from a continuously or discontinuously extruded plastic tube. Because of the higher achievable stretch hardening, the plastic container formed according to the invention is preferably produced in a stretch blow molding method from a previously produced elongate preform.
  • the preform or preform can be manufactured in different ways. For example, injection molding, extrusion or extrusion blow molding are used for this purpose.

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

Claims (17)

  1. Récipient en matière plastique, notamment pour la conservation de produits liquides avec une légère surpression, comprenant un corps de récipient (2) s'étendant le long d'un axe longitudinal, à l'une des extrémités longitudinales duquel se raccorde un col de récipient (3) qui est doté d'au moins une ouverture de versement (4), et à l'autre extrémité longitudinale duquel se raccorde une partie de fond (5) qui présente un fond de récipient (6) et une zone de bord (8) remontant latéralement, qui se raccorde au corps de récipient (2),
    dans lequel le fond de récipient (6) présente une partie concave (9) qui est incurvée en direction d'un volume interne de récipient délimité par le corps de récipient (2) et dont le pourtour est relié par une zone de transition (10) étagée, faisant saillie axialement, à une surface de pose (7) qui se raccorde à la zone de bord (8) remontant latéralement ; dans lequel la surface de pose (7) et au moins une zone partielle de la zone de transition (10) étagée sont interrompues par un premier nombre de rainures (11) ; et dans lequel il est prévu, dans la partie concave (9), un deuxième nombre de saillies (12) en forme de panneaux qui s'étendent essentiellement entre la zone de transition (10) étagée et l'axe longitudinal et se terminent avant la zone de transition (10) étagée.
  2. Récipient en matière plastique selon la revendication 1, caractérisé en ce que les rainures (11) s'étendent dans la zone de bord (8) remontant latéralement de la partie de fond (5).
  3. Récipient en matière plastique selon la revendication 1 ou 2, caractérisé en ce que le premier nombre de rainures et le deuxième nombre de saillies en forme de panneaux sont différents l'un de l'autre.
  4. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que la partie concave (9) du fond de récipient (6) comprend un dôme (13) central s'étendant vers l'intérieur du récipient.
  5. Récipient en matière plastique selon la revendication 4, caractérisé en ce que les saillies (12) en forme de panneaux se terminent chacune avant une transition de la partie concave (9) vers le dôme (13) central.
  6. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce qu'une hauteur axiale (s) entre la partie concave (9) et la surface de pose (7), couverte au moyen de la zone de transition (10) étagée, est de 0,2 mm à 10 mm, de préférence de 0,5 mm à 5 mm, de façon particulièrement avantageuse de 1 mm.
  7. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que la zone de transition (10) étagée présente une dimension (r) s'étendant sensiblement radialement, qui est de 0,2 mm à 10 mm, de préférence de 0,5 mm à 5 mm, de façon particulièrement avantageuse de 1,3 mm.
  8. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que les rainures (11) présentent une profondeur (t) qui est de 0,5 mm à 5 mm, de préférence de 1 mm à 3 mm, de façon particulièrement avantageuse de 2 mm.
  9. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce qu'une profondeur (t) des rainures (11) est égale ou supérieure à une hauteur (s) de la zone de transition (10) étagée s'étendant entre la partie concave (9) et la surface de pose (7).
  10. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que les rainures (11) présentent un angle d'ouverture (α) qui est de 20 ° à 50 °, de préférence de 27 ° à 43 °, de façon particulièrement avantageuse de 35 °.
  11. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que les saillies (12) en forme de panneaux présentent, dans la direction périphérique, une dimension (w) maximale, mesurée dans le voisinage de la zone de transition (10) étagée, qui est de 2 mm à 10 mm, de préférence de 5 à 8,5 mm, de façon particulièrement avantageuse de 7,25 mm.
  12. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que les saillies (12) en forme de panneaux présentent, par rapport à la partie concave (9), une projection (1) maximale qui est de 0,5 mm à 5 mm, de préférence de 1,3 mm à 3,8 mm, de façon particulièrement avantageuse de 2,4 mm.
  13. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que la surface de pose (7) présente une largeur (b) qui s'étend sensiblement perpendiculairement à la direction périphérique et est de 0,1 mm à 5 mm, de préférence de 0,15 mm à 1 mm, de façon particulièrement avantageuse de 0,3 mm.
  14. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que les rainures présentent une extrémité rétrécie (14) qui s'étend dans le sens de l'axe longitudinal et avance sur 0,2 mm à 4 mm dans la partie concave (9).
  15. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que le premier nombre de rainures (11) est impair.
  16. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que la partie de fond (5) présente sept rainures (11) qui sont réparties de façon sensiblement régulière sur la périphérie de la partie de fond (5).
  17. Récipient en matière plastique selon l'une des revendications précédentes, caractérisé en ce que le récipient en matière plastique est fabriqué par un procédé d'étirage-soufflage, à partir d'une préforme allongée réalisée précédemment.
EP13779141.4A 2012-11-30 2013-10-17 Récipient en matière plastique Active EP2925615B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH26302012 2012-11-30
CH00543/13A CH707262A2 (de) 2012-11-30 2013-03-05 Kunststoffbehälter.
PCT/EP2013/003122 WO2014082696A1 (fr) 2012-11-30 2013-10-17 Récipient en matière plastique

Publications (2)

Publication Number Publication Date
EP2925615A1 EP2925615A1 (fr) 2015-10-07
EP2925615B1 true EP2925615B1 (fr) 2016-10-12

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EP13779141.4A Active EP2925615B1 (fr) 2012-11-30 2013-10-17 Récipient en matière plastique

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US (1) US9957077B2 (fr)
EP (1) EP2925615B1 (fr)
CN (1) CN104853991B (fr)
BR (1) BR112015011908B1 (fr)
CH (1) CH707262A2 (fr)
IN (1) IN2015DN04024A (fr)
MX (1) MX360392B (fr)
RU (1) RU2611294C2 (fr)
WO (1) WO2014082696A1 (fr)

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Also Published As

Publication number Publication date
BR112015011908A2 (pt) 2017-07-11
EP2925615A1 (fr) 2015-10-07
MX2015006564A (es) 2015-08-05
US9957077B2 (en) 2018-05-01
RU2611294C2 (ru) 2017-02-21
CH707262A2 (de) 2014-05-30
MX360392B (es) 2018-10-31
BR112015011908B1 (pt) 2021-09-14
US20150259090A1 (en) 2015-09-17
WO2014082696A1 (fr) 2014-06-05
CN104853991B (zh) 2017-06-13
IN2015DN04024A (fr) 2015-10-02
RU2015125694A (ru) 2017-01-11
CN104853991A (zh) 2015-08-19

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