EP1571099B1 - Couvercle en plastique - Google Patents

Couvercle en plastique Download PDF

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Publication number
EP1571099B1
EP1571099B1 EP20050003178 EP05003178A EP1571099B1 EP 1571099 B1 EP1571099 B1 EP 1571099B1 EP 20050003178 EP20050003178 EP 20050003178 EP 05003178 A EP05003178 A EP 05003178A EP 1571099 B1 EP1571099 B1 EP 1571099B1
Authority
EP
European Patent Office
Prior art keywords
region
lid
plastic lid
boundary surface
groove
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.)
Not-in-force
Application number
EP20050003178
Other languages
German (de)
English (en)
Other versions
EP1571099A2 (fr
EP1571099A3 (fr
Inventor
Christian Thoma
Nicole Schütz
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.)
Rotho Kunststoff AG
Original Assignee
Rotho Kunststoff AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE202004002742U external-priority patent/DE202004002742U1/de
Application filed by Rotho Kunststoff AG filed Critical Rotho Kunststoff AG
Publication of EP1571099A2 publication Critical patent/EP1571099A2/fr
Publication of EP1571099A3 publication Critical patent/EP1571099A3/fr
Application granted granted Critical
Publication of EP1571099B1 publication Critical patent/EP1571099B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0214—Removable lids or covers without integral tamper element secured only by friction or gravity
    • B65D43/0218—Removable lids or covers without integral tamper element secured only by friction or gravity on both the inside and the outside of the mouth of the container
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00101—Shape of the outer periphery curved square-like or rectangular-like
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00296—Plastic
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00314—Combination, e.g. laminates, several different materials
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509—Cup
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00824—Means for facilitating removing of the closure
    • B65D2543/00833—Integral tabs, tongues, handles or similar
    • B65D2543/00842—Integral tabs, tongues, handles or similar outside of the lid

Definitions

  • the invention relates to a plastic lid for a container, in particular for the transport and storage of food.
  • a plastic lid is manufactured in two-component injection molding technology and comprises a circumferential edge region of soft elastic material for placement on the edge of the container, and at least one inner region of contrast harder material that fills the lid surface within the edge region.
  • Containers with separate plastic lid are widely used as storage containers, refrigerator jars, food containers, freezer containers and microwave dishes, especially if the container or the bowl is made of plastic.
  • an airtight or at least drip-tight closing lid is required, so that this is usually made of a flexible plastic, in particular low-density polyethylene.
  • Such a welel elastic lid is placed over the edge of the container, wherein a circumferentially encircling groove in the edge of the lid sealingly sealingly receives the edge of the container.
  • a plastic lid made of soft elastic material is not very stable; He also tends to warp in the dishwasher.
  • EP-A-1 466 836 discloses a plastic lid having a two-part inner portion made of polypropylene and at the edge of a circumferential seal made of an elastomer, with which it can be inserted into the edge of a container.
  • the peripheral seal may be injection molded at a central injection point, with radially leading outward flow channels leading from the central injection point to the seal.
  • a plastic lid is produced, which is made in two-component injection molding technology and consists essentially of hard and durable material, while circumferentially only a sealing layer of flexible plastic molded in a circumferential groove to achieve the desired sealing effect.
  • the two-component injection molding technique for the production of these known plastic lid is expensive. Since as the most elastic material usually a flexible TPE (thermoplastic elastomer) is used, which flows relatively difficult in the injection molding process, it is particularly unfavorable that this material is injected at the edge of the lid and around the circumference must flow around the lid in order to finally fill the injection mold completely.
  • the corresponding injection molding tools must therefore be equipped with several injection nozzles, or it must be ensured with relatively great effort that the long flow paths are traversed thermally balanced within the mold; because unequal, non-balanced flow paths can lead to tensions and possibly to distortion in the product, which adversely affects the quality of the lid and the tightness of the lid.
  • the present invention is therefore based on the object to improve a plastic lid of the type mentioned in terms of its quality or in terms of its low producibility.
  • a plastic cover of the type mentioned has been improved in that in addition to the inner region of harder material and the edge region of soft elastic material, a connection region is present, which is injection-molded together with the edge region and consists of the same soft elastic material. According to the invention, this connecting region connects two opposite sides and / or corners of the edge region to one another, whereby the inner region is spanned or subdivided into two or more regions.
  • connection region may be in the form of a straight, curved or diagonal transverse web; but it can also be designed in the form of a cross or star.
  • connection region can be designed to be relatively large in area and / or profiled, so that the edge region, together with the connection region, assumes a substantial part of the inherent stability of the plastic cover.
  • the relatively hard inner region can thereby be made thinner than hitherto possible in the prior art, whereby a greater suppleness and flexibility of the entire plastic lid is ensured.
  • the removal and snapping the plastic lid from one and to a container is thereby more comfortable and improves the sealing effect of the lid.
  • the invention also offers particular advantages under a further aspect:
  • a plastic lid In order to achieve the best possible sealing effect of a plastic lid, can
  • the prior art does not use a highly transparent plastic material, even if it is polypropylene, for example. Because this does not have the required suppleness for handling, and it also does not lead to satisfactory results in terms of the tightness of the lid.
  • connection region is formed over such a large area and / or profiled that it takes over the essential part of the inherent stability of the lid together with the edge region, so that designed as a transparent or crystal clear viewing window inner region is thin like a film can be trained.
  • the plastic lid according to the invention with the known core retraction technique in two-component injection molding.
  • the encircling edge region made of flexible material is then injection-molded in an injection molding tool via a central injection point in the connection region.
  • the connecting area which is produced together with the edge area, distributes the plastic melt relatively uniformly from a more or less central point in the outer edge zones of the lid, wherein after virtually equal flow paths stresses in the subsequently solidified melt can be avoided.
  • the core of the injection molding tool is retracted by the desired thickness of the inner region and then this inner region, in particular a highly transparent window, is injection molded with the second component.
  • the two-component injection molding technique it is known to first inject the first component and, during the solidification process of the first component, the second component into the mold, with the second abutting and joining the first component.
  • the second component is usually injected at high pressure (up to 4000 N / cm 2 ) and the first component is generally not fully hardened, it can cause distortions in the first component. These distortions have the effect of causing bumps in the first component, such as ripples.
  • deformations of the interface between the first and second components may occur, which may affect the connection between the two components.
  • At least one groove is formed in the inner lid region and / or in the peripheral edge region. This groove extends substantially parallel to the interface between the two components of the lid according to the invention and serves to receive a retaining edge of the tool used in injection molding.
  • the second component If the second component is then injected into the casting tool, it abuts the component injected first along the interface and causes a force to act on it.
  • the first injected component groove which comprises a formed in the tool retaining edge, this force can be transmitted to the retaining edge and thus to the tool.
  • the plastic lid is designed such that the boundary surface between the first and second components in projection parallel to the lid plane in predominant surface portions falls on the surface of the interface facing the groove. This ensures that the predominant part of the force acting parallel to the cover plane force can be transmitted to the retaining edge of the mold and thus does not lead to a material shift.
  • the plastic lid is designed such that the interface between the two components of the lid according to the invention in projection parallel to the lid plane entirely on the boundary surface facing side of the groove falls, so that in a first approximation all forces acting parallel to the lid plane forces on the Retaining edge of the mold are transferred and thus almost all forces are eliminated within the first injected component, which could lead to a material shift.
  • the edge of the surface of the groove formed in the plastic cover according to the invention is essentially decisive. Therefore, in a further preferred embodiment, the groove may be asymmetrical, such that its side facing the interface is larger, that is, has a greater height than the side facing away from the interface.
  • the asymmetrical embodiment of the groove gives greater freedom in the design of the lid in the area of the interface.
  • both components in the area of the interface have a cuboid cross-sectional shape (in a section perpendicular to the cover plane and parallel to the interface), so that the interface is also rectangular.
  • the two components abut each other in such a way that the boundary surface is larger than the cross-sectional area perpendicular to the cover plane in the region of the interface.
  • step-shaped formation of the interface it is further advantageous if at least one step of the interface has a beveled or rounded edge, so that the flow of the second-injected component along the step-shaped interface is facilitated.
  • the edge region of the plastic lid When removing a plastic lid from a container, the edge region of the plastic lid is usually pulled upwards relative to the middle lid region. This leads to a bending of at least the cover area, where the forces begin to open the lid. The bending of the lid may result in tensile or shear forces at the interface between the two components of the lid. By frequent use, in which the lid is necessarily placed on the container and in turn removed, thus a considerable burden on the connection between the two components can arise.
  • the plastic lid in the vicinity of the apex of the groove has a predetermined bending point.
  • This predetermined bending point can be generated, for example, by the fact that the material thickness in the region of the apex of the groove is small in comparison to the average material thickness of the lid. This reduces the bending of the lid during placement and removal of the container, since the groove acts like a hinge due to the small thickness of the material at the apex of the groove and thus pivotal movement of the outer lid portion to the groove relative to the inner lid portion instead of bending. This reduces the tensile and shear forces at the interface between the first and second components and thus increases the durability of the connection between the two components.
  • the groove is formed on the inside of the lid.
  • the plastic lid may preferably have a kink or a bend in the peripheral edge region and / or in the inner lid region near the interface, wherein the kink or the bend runs substantially parallel to the interface.
  • polypropylene is used in different composition for both components in the plastic lid according to the invention.
  • polypropylene is used in different composition for both components in the plastic lid according to the invention.
  • polypropylene in combination with a thermoplastic elastomer is possible.
  • plastic cover 1 consists of a peripheral edge region 2 of soft elastic material, namely an elastic TPR (thermoplastic rubber), two inner areas 3, 3 'made of transparent polypropylene, which is hatched only for the purpose of a clearer representation, and a connecting portion 4, the the two longitudinal sides of the edge region 2 connects, is injection-molded together with this and consequently consists of the same soft-elastic material.
  • an injection point 5 can be seen in the middle of the connection region 4, an injection point 5 can be seen.
  • connection area 4 divides two inner areas 3 and 3 '.
  • the connection of the underside of the connection region 4 with the inner region 3 by injection molding of the same increases the stability not only of the entire lid, but in particular the inner region 3, so that it can be made relatively thin, flexible and crystal clear.
  • a true separation of the inner regions 3 and 3 ' may be present through the connection region 4.
  • a plurality of inner regions 3, 3 ' may also be present, and the shape of the connection region 4 may be selected differently.
  • a straight crosspiece which can quite diagonally from corner to corner, and a cross or a star can be provided.
  • a profiling 6 on the sides of the connecting region 4 additionally increases its stability, so that in the present exemplary embodiment the soft elastic material of the edge region 2 and of the connecting region 4 essentially ensure the inherent stability of the cover 1. The thinner and more flexible the inner region 3, 3 'can be formed.
  • edge region 2 is profiled and shaped, as the edge region of a tried and tested, full-surface lid made of soft elastic material. Accordingly, its properties in terms of handling and sealing effect have remained unchanged.
  • An outer roof-shaped projection 7 forms a groove 8 accessible from below, in which an edge 9 of a container 10 is sealingly received.
  • FIG. 2 represents a plan view of the plastic lid 1 FIG. 1 so that reference may be made to the above description.
  • the injection point 5 in the middle of the connection region 4 and the profilings 6 can be seen particularly clearly here.
  • a second injection point 11 for the second cover component, ie the harder material of the inner region 3, 3', can be seen.
  • FIG. 3 is next to one of FIG. 1 corresponding perspective view of the plastic lid 1 a corresponding container 10 also shown in perspective.
  • the plastic lid 1 is placed on the edge 9 of the container 10, so that is made of FIG. 4 to be seen image.
  • the container 10 has circumferentially on a projection 12 which is pulled down and tilted at the two end faces to create a finger space for releasing the plastic lid 1 from the container edge 9.
  • This web 12 serves to stiffen the container 10 and at the same time protects the projection 7 of the plastic lid 1 against unintentional release from the edge 9 of the container 10th
  • the bottom 13 of the container 10 is corrugated, so that when cooling the contents of the container, if necessary, condensation or similar liquids run into the depressions of the corrugations and the contents of the container are not in the wet state.
  • FIG. 5 is finally a sectional view in a plane A - A off FIG. 4 ,
  • the connecting region 4 does not actually divide the inner region 3, 3 ', but spans it.
  • a material connection between the soft elastic material of the connecting portion 4 and the harder, clear transparent material of the inner region 3, 3 ' is present, which not only the stability of the plastic cover 1 overall, but also the stability of the inner region 3, 3 'in particular increases.
  • FIG. 6 shows a first embodiment of an interface 15 between the edge region 2 made of soft elastic material and the inner region 3 of polypropylene in a schematic sectional view, wherein the section along the line "L" in FIG. 1 is laid.
  • both regions 2, 3 near a boundary surface 15 have a rectangular cross section, so that the boundary surface 15 is also rectangular.
  • a groove 14 is formed in this embodiment in the peripheral edge region 2, since this is typically injected first in the mold. When injecting the second component for producing the inner lid portion 3, this thus abuts along the boundary surface 15 against the peripheral edge region 2, whereby a force parallel to the lid plane, that is in FIG. 6 according to the direction marked "K".
  • the projection of the boundary surface 15 parallel to the cover plane falls in predominant area proportions (in this case about 65% of the total area) onto the side of the groove facing the boundary surface.
  • FIG. 7 a further embodiment is shown, in which the peripheral edge region 2 and the inner lid portion 3 abut each other in a step-shaped interface.
  • one step of the interface has a chamfered edge 16, so that the flow of the second component in the production of the inner lid portion 3 along the step-shaped interface is facilitated, that is, the resistance to the flow movement is reduced.
  • FIG. 7 an asymmetrical embodiment of the groove 14 is shown, wherein the peripheral edge region 2 and the groove 14 are designed such that the boundary surface in projection parallel to the cover plane falls entirely on the surface of the interface facing the groove.
  • FIG. 8 Finally, an embodiment for the connection of the edge region 2 and the inner region 3 is shown, in which in addition to the groove 14 in the peripheral edge region 2 a kink 17 is formed near the interface, in addition to a transmission of forces acting parallel to the lid plane forces on the mold allows.
  • FIGS. 6 to 8 Embodiments shown have only one groove in the peripheral edge region, since typically the edge region is first produced and subsequently the second component for producing the central lid region is injected.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Claims (19)

  1. Couvercle en matière plastique pour un récipient, en particulier pour le transport et la conservation de denrées alimentaires, comprenant :
    - une région de bord entourante (2) en matière souple et élastique, à mettre en place sur un bord (9) d'un récipient (10), sachant que la région de bord (2) présente une gorge (8) accessible de l'extérieur, qui est formée par une partie extérieure en saillie (7) en forme de toit et dans laquelle le bord (9) du récipient (10) peut être reçu en étanchéité,
    - et une région intérieure (3) en matière plus dure que la région de bord, sachant que le couvercle en matière plastique (1) est fabriqué par moulage par injection à deux composants,
    - sachant en outre qu'au moins une région de liaison (4) est présente, qui est constituée de la même matière souple et élastique que la région de bord (2) et qui est moulée par injection conjointement avec celle-ci,
    - et sachant que la région de liaison (4) relie au moins deux côtés et/ou coins opposés de la région de bord (2) et ce faisant enjambe la région intérieure (3) ou sépare l'une de l'autre deux régions intérieures (3, 3').
  2. Couvercle en matière plastique selon la revendication 1, caractérisé en ce que la région intérieure (3, 3') est fabriquée en une matière transparente ou translucide.
  3. Couvercle en matière plastique selon la revendication 1 ou 2, caractérisé en ce qu'un point d'injection (5) pour la matière souple et élastique de la région de bord (2) et de la région de liaison (4) est disposé dans la région de liaison (4).
  4. Couvercle en matière plastique selon l'une des revendications 1 à 3, caractérisé en ce que la région de liaison (4) est réalisée sous la forme d'une entretoise transversale s'étendant en ligne droite, en courbe ou en diagonale.
  5. Couvercle en matière plastique selon l'une des revendications 1 à 3, caractérisé en ce que la région de liaison (4) est réalisée sous la forme d'une croix ou d'une étoile.
  6. Couvercle en matière plastique selon l'une des revendications 1 à 5, caractérisé en ce que la région intérieure (3, 3') est réalisée à la manière d'une feuille.
  7. Couvercle en matière plastique selon l'une des revendications 1 à 6, caractérisé en ce que la région de liaison (4) est réalisée avec une grande surface de telle sorte que la région de bord (2) contribue conjointement avec la région de liaison (4) pour une part essentielle à la stabilité propre du couvercle en matière plastique (1).
  8. Couvercle en matière plastique selon l'une des revendications 1 à 7, caractérisé en ce qu'au moins une gorge (14), convenant pour recevoir un bord de maintien de l'outil utilisé lors du moulage par injection, est formée dans la région intérieure de couvercle (3) et/ou dans la région de bord entourante (2), à proximité d'une surface limite (15) où les deux composants se rencontrent et sont mutuellement assemblés, et en s'étendant sensiblement parallèlement à cette surface limite.
  9. Couvercle en matière plastique selon la revendication 8, caractérisé en ce que la gorge (14) s'étend tout autour de la surface limite à une distance approximativement constante de la surface limite (15).
  10. Couvercle en matière plastique selon la revendication 8 ou 9, caractérisé en ce que la surface limite (15), en projection parallèle au plan du couvercle, rencontre pour des parts prépondérantes de ladite surface le côté de la gorge (14) qui est tourné vers la surface limite (15).
  11. Couvercle en matière plastique selon l'une des revendications 8 à 10, caractérisé en ce que la surface limite (15), en projection parallèle au plan du couvercle, rencontre dans sa totalité le côté de la gorge (14) qui est tourné vers la surface limite.
  12. Couvercle en matière plastique selon l'une des revendications 8 à 11, caractérisé en ce que la gorge (14) est réalisée asymétrique, de telle sorte que son côté tourné vers la surface limite (15) est plus haut que le côté opposé à la surface limite (15).
  13. Couvercle en matière plastique selon l'une des revendications 8 à 12, caractérisé en ce que la surface limite (15) est plus grande que la superficie de section perpendiculairement au plan du couvercle dans la région de la surface limite (15).
  14. Couvercle en matière plastique selon l'une des revendications 8 à 13, caractérisé en ce que la surface limite (15) est réalisée échelonnée.
  15. Couvercle en matière plastique selon la revendication 14, caractérisé en ce qu'au moins un gradin (16) de la surface limite (15) présente une arête chanfreinée ou arrondie.
  16. Couvercle en matière plastique selon l'une des revendications 8 à 15, caractérisé en ce que le couvercle en matière plastique présente un point de courbure privilégiée dans l'environnement du sommet de la gorge (14).
  17. Couvercle en matière plastique selon l'une des revendications 8 à 16, caractérisé en ce que la gorge (14) est formée sur le côté intérieur du couvercle (1).
  18. Couvercle en matière plastique selon l'une des revendications 8 à 17, caractérisé en ce que la région de bord entourante (2) et/ou la région intérieure de couvercle (3) présentent une inflexion (17) ou une courbure à proximité de la surface limite (15), sachant que l'inflexion (17) ou la courbure s'étend sensiblement parallèlement à la surface limite (15).
  19. Récipient pourvu d'un couvercle en matière plastique selon l'une des revendications 1 à 18.
EP20050003178 2004-02-19 2005-02-15 Couvercle en plastique Not-in-force EP1571099B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202004002742U DE202004002742U1 (de) 2004-02-19 2004-02-19 Kunststoffdeckel
DE202004002742U 2004-02-19
DE202004007378U DE202004007378U1 (de) 2004-02-19 2004-05-08 Kunststoffdeckel
DE202004007378U 2004-05-08

Publications (3)

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EP1571099A2 EP1571099A2 (fr) 2005-09-07
EP1571099A3 EP1571099A3 (fr) 2006-10-04
EP1571099B1 true EP1571099B1 (fr) 2009-10-07

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20110171A1 (it) * 2011-05-26 2012-11-27 Tecnowerk Srl Struttura di coperchio in materia plastica stampata bicolore, relativi apparato e procedimento di stampaggio, nonche' contenitore per prodotti alimentari incorporante tale coperchio
DE102013004926A1 (de) 2013-03-22 2014-09-25 Kautex Textron Gmbh & Co. Kg Betriebsflüssigkeitbehälter
EP3693147A1 (fr) 2019-02-08 2020-08-12 Rotho Kunststoff AG Récipient en matière plastique moulée par injection et son procédé de fabrication
DE102019104607A1 (de) * 2019-02-22 2020-08-27 Volkswagen Aktiengesellschaft Verfahren zur Herstellung von Bauteilen mit einer Biegestelle und ein solches Bauteil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806875C1 (fr) * 1988-03-03 1989-11-16 Franz Pohl, Metall- Und Kunststoffwarenfabrik Gmbh, 7500 Karlsruhe, De
DE9200670U1 (de) * 1992-01-18 1992-06-17 Spritzgußwerk KG Richard Rassbach GmbH & Co, 1000 Berlin Deckel aus Kunststoff für einen insbesondere Lebensmittel enthaltenden Behälter aus Kunststoff mit ovalem Grundriß, insbesondere für eine Ovalschale aus Polypropylen
SE470094B (sv) * 1992-04-16 1993-11-08 Akerlund & Rausing Ab Behållarlock samt förfarande för tillverkning av detta
FR2752821B1 (fr) * 1996-08-29 1998-09-25 Oreal Capsule de distribution a moyens de prehension ameliores
US6305563B1 (en) * 1999-01-12 2001-10-23 Aptargroup, Inc, One-piece dispensing structure and method and apparatus for making same
GB0307433D0 (en) * 2003-03-31 2003-05-07 Rpc Containers Ltd Container lid

Also Published As

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EP1571099A2 (fr) 2005-09-07
EP1571099A3 (fr) 2006-10-04

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