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EP3865419B1 - Couvercle en papier, ainsi que son procédé de fabrication - Google Patents

Couvercle en papier, ainsi que son procédé de fabrication Download PDF

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Publication number
EP3865419B1
EP3865419B1 EP21154816.9A EP21154816A EP3865419B1 EP 3865419 B1 EP3865419 B1 EP 3865419B1 EP 21154816 A EP21154816 A EP 21154816A EP 3865419 B1 EP3865419 B1 EP 3865419B1
Authority
EP
European Patent Office
Prior art keywords
lid
wall
ring
disc
cover
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
EP21154816.9A
Other languages
German (de)
English (en)
Other versions
EP3865419C0 (fr
EP3865419A1 (fr
Inventor
Sebastian Leonhardt
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.)
Gebr Leonhardt & Co Kg Blema Kircheis GmbH
Original Assignee
Gebr Leonhardt & Co Kg Blema Kircheis GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebr Leonhardt & Co Kg Blema Kircheis GmbH filed Critical Gebr Leonhardt & Co Kg Blema Kircheis GmbH
Publication of EP3865419A1 publication Critical patent/EP3865419A1/fr
Application granted granted Critical
Publication of EP3865419C0 publication Critical patent/EP3865419C0/fr
Publication of EP3865419B1 publication Critical patent/EP3865419B1/fr
Active 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
    • 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
    • B65D43/0222—Removable lids or covers without integral tamper element secured only by friction or gravity only 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
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00027—Stackable lids or covers
    • 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
    • B65D2543/00092—Shape of the outer periphery curved circular
    • 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
    • B65D2543/00231—Overall construction of the lid made of several pieces
    • B65D2543/0024—Overall construction of the lid made of several pieces two pieces, one forming at least the whole skirt, the other forming at least the whole upper part
    • 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
    • B65D2543/00268—Paper
    • 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
    • B65D2543/00527—NO contact
    • 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

Definitions

  • the invention relates to a lid made of paper and a method for its production according to the preamble of claims 1 and 4.
  • the reference discloses DE 830891B already two-piece lid made of paper with a first paper element, which represents the peripheral lateral, largely vertical edge and with a second paper element, which represents an inner horizontally running lid finish and with a third paper element, which represents an outer horizontal lid finish .
  • the pamphlets US 2014/0 144 923 A1 and EP 2 674 369 A1 also disclose two-piece paper lids, which are cohesively designed in a combination of a lid plate and a lid ring.
  • the bezel ring grips around the material in a cohesive and U-shaped manner.
  • This structure is relatively expensive and the manufacturing process is complicated.
  • U.S. 2010/0176130 A1 discloses a paper lid according to the preamble of claims 1 and 4, comprising a top panel, a downwardly formed side wall at an edge of the top panel, and a reinforcing member for reinforcing the side wall and securing the paper lid to a container.
  • the paper cap further includes a receiving element disposed between an inner top surface of the reinforcing element and the top panel, the receiving element engaging the rim of the container thereby reinforcing the bond between the paper cap and the container.
  • Such a construction of a paper cover is expensive to produce.
  • the object of the invention is to develop a lid made of paper that can be produced easily and inexpensively from two parts with a corresponding method using a device and which has sufficient stability to close a container several times and is stackable in one embodiment.
  • the lid according to the invention consists of paper and/or paper composite and has a lid disc and a lid ring having a longitudinal axis with a peripheral wall extending in the direction of the longitudinal axis with an inner surface and an outer surface and a first end and a second end, with the lid disc and lid ring are cohesively connected to each other and wherein the cover disc has a flat area running transversely to the longitudinal axis, which engages in the cover ring and on its outer circumference a U-shaped area adjoining the flat area with a first wall section and a second wall section, which overlap each other a third wall section are connected, and wherein the first end of the cover ring engages in the U-shaped area of the cover disk in such a way that the first wall section rests on the inner surface and the second wall section rests on the outer surface and that the first wall section and the second wall section of the U-shaped area of the cover plate are integrally connected to the first end of the cover ring.
  • the wall of the cover ring can be drawn inwards/in the direction of the longitudinal axis so that it can be stacked in its area which engages in the U-shaped area of the cover disk, so that a shoulder is preferably formed below the cover disk.
  • the outer diameter of the cover disk is smaller than the inner diameter of the wall of the cover ring in the area of the open second end, which faces away from the cover ring.
  • a pre-drawn conical lid disc is first produced, which has an edge area and a flat area offset thereto by a conical shoulder and a lid ring with a first end of its wall on the outer circumference of the conical shoulder or within the conical Paragraph is positioned and then at least a portion of the conical paragraph against an inner surface and the edge portion are formed against an outer surface of the wall of the bezel and bonded to this.
  • the wall of the cover ring can be retracted in the direction of the longitudinal axis of the cover ring in order to make the cover capable of being stacked when it is connected to the cover disk.
  • the wall of the cover ring can be drawn in at a first end in the direction of the longitudinal axis before it is connected to the cover disk.
  • the wall of the cover ring can also be drawn in at a first end in the direction of the longitudinal axis after it has been connected to the cover disk.
  • a pre-drawn conical cover disc is first produced, which has an edge area and a flat area offset thereto by a conical step, that a cover ring with a first end of a wall on the outer circumference of the conical step or inside the conical step is positioned and then at least one area of the tapered shoulder are molded against an inner surface and the rim portion is molded against and sealed to an outer surface of the wall (3) of the bezel, first and second wall portions of the bezel and the end of the wall of the bezel therebetween being parallel to a longitudinal axis of the Lid ring are aligned and the first and second wall sections extend in a straight line.
  • figure 1 shows the starting part 1 ′ of a cover disk, which consists of a flat section of paper or cardboard cut to fit the shape of the cover.
  • the starting part can have a round, oval, kidney-shaped or other shape in plan view, depending on the desired shape of the lid.
  • the starting part 1' On its underside 1a, the starting part 1' has a coating suitable for producing a material connection, preferably in the form of a sealing medium, in particular a sealing layer or sealing film, which is not shown here, however.
  • the sealing medium can, for example, be laminated on, extruded or applied as a sealing wax.
  • it consists of PE (polyethylene).
  • a barrier layer can be arranged between the sealing medium and the underside 1a of the cover disc (e.g. in the form of a ceramic coating or made of aluminum foil, PET (polyethylene terephthalate) or EVOH (ethylene vinyl alcohol copolymer).
  • the conically advanced cover plate 1 shows in the sectional view figure 2 .
  • this has an edge area 4 and an essentially flat area 1.1 offset thereto by a conical step 5.
  • This can be flat, as shown here, or it can also be curved in the direction of the edge or in the opposite direction thereto.
  • the essentially flat area can contain one or more beads (not shown).
  • cover ring 2 was preferably made of paper in the winding process and in particular spirally wound.
  • the cover ring 2 has a peripherally closed wall 3, the course of which is adapted to the shape of the cover to be produced and thus to the cover disc 1 (eg round, oval, kidney-shaped, etc.).
  • the bezel 2 has a longitudinal axis L2 and an inner diameter d2.
  • the wall 3 has an inner surface 3A and an outer surface 3B and a first end 3C and an opposite second end 3D.
  • the inner surface 3A and/or the outer surface 3B of the cover ring 2 can also be provided with sealing medium, at least in the connection area with the cover disk 1, as described for the cover disk 1, and possibly also have a barrier layer.
  • the cover ring 1 is placed on the first end 3C of the cover sleeve 2 (see figure 4 ).
  • the conical shoulder 5 serves to center the cover sleeve 2 or the cover disk 1 with respect to the cover ring 2.
  • the upper non-designated area of the wall 3 of the cover sleeve 2 is now deformed radially inwards in the direction of the longitudinal axis L2 (indicated by the inward-pointing arrows) and the edge area 4 of the cover disk 1 is bent downwards (indicated by the arrows pointing down).
  • the edge area 4 of the cover sleeve 1 is pressed against the outer surface 3B and the conical shoulder 5 of the cover sleeve 1 is pressed against the inner surface 3A of the cover sleeve 2 and the material connection, in particular by sealing, between the cover disk 1 and the cover ring 2 is produced under pressure and heat.
  • the temperature required for sealing is usually between 100°C and 350°C and, for example, with PE as the sealing medium between 120°C and 200°C.
  • the cover D is finished and the edge of the cover disc 1 has a U-shaped area 1.2 (see Figure 5 and 6 ), in which the wall 3 of the cover ring 2 engages, the wall 3 being materially bonded to the U-shaped area 1.2 on its inner surface 3A and on its outer surface 3B.
  • the cover D has a cup-like depression 6.1 with the depth t1 and an inner diameter d1.
  • the cover D has an outer diameter D1.
  • the wall 3 has an inner diameter d2 after the shoulder 3.1 up to the second end 3D.
  • the U-shaped area 1.1 adjoining the essentially flat area 1.1 has an inner first wall section 1.3 (leg) which is connected to the inner surface 3A of the wall of the cover ring 2 and that a second wall section 1.4 (leg) is bonded to the outer surface 3B of the wall 3 of the bezel 2 (preferably by sealing).
  • the first and the second wall section 1.3, 1.4 of the cover disk 1 and the end 3C of the wall 3 of the cover ring 2 located therebetween are aligned essentially parallel to the longitudinal axis L2 of the cover ring 2, the first and the second wall section 1.3, 1.4 being essentially shoot straight.
  • the first wall section 1.3 and the second wall section 1.4 of the U-shaped area 1.2 of the cover disk 1 are connected to one another via a third wall section 1.5.
  • the wall 3 is drawn in radially inwards/in the direction of the longitudinal axis L2 at the end 3C which engages in the U-shaped area 1.2 of the cover disc 1, as a result of which a shoulder 3.1 is formed below the second wall section 1.4 of the U-shaped area.
  • the inner diameter d2 of the wall 3 is slightly larger from the shoulder 3.1 to the second end 3D than the outer diameter D1 in the area of the cover plate 1, so that the inner diameter d2 of a cover D is placed over the outer diameter D1 of the cover plate 1 of another cover D for stacking can be.
  • the second end 3D of a cover D then rests on the shoulder 3.1 of the other cover D.
  • the wall 3 of the cover sleeve 2 has an outside diameter D2 from paragraph 3.1 to the second end 3D.
  • FIG 7 four covers D stacked one on top of the other are shown in longitudinal section as an example.
  • the upper cover D grips with its inner diameter d2 of the lower area of the cover sleeve 2 over the outer diameter D1 of the second wall section of the U-shaped area (not designated here) and thus the outer diameter D1 of the cover disk 1.
  • FIG 8 shows a cover D according to the invention which cannot be stacked.
  • This also has a cover disc 1 with a substantially flat area 1.1 and an adjoining U-shaped area 1.1 on the outside with an inner first wall section 1.3 (leg) which is connected to the inner surface 3A of the wall 3 of the cover ring 2 and a second wall section 1.4 (leg), which is materially connected to the outer surface 3B of the wall 3 of the cover ring 2 (preferably by sealing).
  • the first and the second wall section 1.3, 1.4 of the cover disk 1 and the end 3C of the wall 3 of the cover ring 2 located between them are also aligned here essentially parallel to the longitudinal axis L2 of the cover ring 2, with the first and the second wall section 1.3, 1.4 essentially straight forward.
  • the first wall section 1.3 and the second wall section 1.4 of the U-shaped area 1.2 of the cover disk 1 are connected via a third wall section 1.5 connected with each other.
  • the wall 3 of the bezel 2 extends over the entire length of the bezel in a straight line and parallel to the longitudinal axis L2.
  • the cover D in both variants - stackable and non-stackable - the cover D according to the invention consists of two parts in the form of a cover disk 1 and a cover ring 2 which are connected to one another in a materially bonded manner.
  • the straight connection areas between cover disk 1 and cover ring 2 create a cover D that extends essentially in a straight line.
  • an advanced conical cover disc 2 is produced, which has an edge area 4 and a flat area 1.1 that is offset by a conical shoulder 5.
  • the bezel 2 is in accordance with figure 9 positioned with its inner diameter d2 on the non-designated outer diameter of a lower tool 6, so that the first end 3C of the wall 3 of the cover ring 2 protrudes by a length L over a radially inward-pointing shoulder 6.1 of the lower tool 6.
  • the preferred conical cover ring 1 is placed with the underside of its edge area 4 on the first end 3C of the wall 3 and is positioned here on the outer circumference of the conical shoulder 5 .
  • An upper tool 7 now moves down and holds the cover ring 1 by fixing it in the radius between the conical shoulder 5 and the flat area 1.1 with a peripheral edge 7.1 against the radially inner end of the shoulder 6.1 of the lower tool 6.
  • the upper tool 7 has an outside diameter D7 which corresponds to the later inside diameter d1 of the cover disc 1 of the finished cover D.
  • the ring stamp 8 has an inner diameter 8d2 in the direction of the lower tool 6, which corresponds to the outer diameter D2 of the cover ring 2 or is slightly larger.
  • the diameter 8d2 is adjoined by a bevel 8.1 pointing radially inwards, which essentially runs parallel to the shoulder 6.1 of the lower tool 6.
  • An inner diameter 8d1 which approximately corresponds to the outer diameter D1 of the finished cover D in the area of the cover disk 1, follows at an incline.
  • the tool is heated at least in the region of the joining zone between cover disc 1 and cover ring 2, which is not shown.
  • the end position of the ring die 8 is in figure 10 shown.
  • the edge area 4 of the cover disk 1 was shaped downwards and pressed against the outer diameter of the cover ring 2 . Due to the bevel 8.1 and the subsequent smaller inner diameter 8d1 of the ring die 8, the upper area 3c of the cover ring 2, the edge area 4 lying against it and the conical area 5 of the cover disk 2 were pressed radially inwards against the outer diameter D7 of the upper tool 7.
  • the pressure and the sealing temperature bring about a material connection between the cover plate 1 and the cover ring 2 in the area in which the first end 3C of the wall 3 of the cover ring is now between the wall areas 1.3 and 1.4 of the Cover disc 1 is located.
  • the non-designated gap formed between the outer diameter D7 and the inner diameter 8d1 is slightly smaller than the sum of the thicknesses of the wall areas 1.3, 1.4 of the cover disk 2 and the wall 3 of the cover ring 2 located between them, as a result of which the pressure builds up due to their compression.
  • the ring die 8 moves upwards, the lower tool 6 and the upper tool 7 are opened and the lid is ejected by means of an ejector, not shown.
  • edge area 4 and the conical area 5 of the cover disc 1 are also formed against the radially inwardly shaped area of the wall of the cover ring 2 and sealed with it.
  • a stackable lid D according to the invention is in figure 13 shown. This is closed at the top by the cover disk 1, which is materially connected to the cover ring 2.
  • the outside diameter D1 in the area of the cover disk 1 is smaller than the outside diameter D2 in the area of the cover ring 2, as a result of which a shoulder 3.1 is formed.
  • the inside diameter of the cover D which is not designated here, grips over the outside diameter D1 for stacking.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Claims (6)

  1. Couvercle (D) en papier, composé d'une rondelle de couvercle (1) et d'un anneau de couvercle (2) présentant un axe longitudinal (L2) avec une paroi (3) circulaire qui s'étend dans la direction de l'axe longitudinal (L2), comportant une surface intérieure (3A) et une surface extérieure (3B) ainsi qu'une première extrémité (3C) et une deuxième extrémité (3D), dans lequel la rondelle de couvercle (1) et l'anneau de couvercle (2) sont reliés l'une à l'autre par solidarité de matière et dans lequel la rondelle de couvercle (1) présente une zone plate (1.1) perpendiculaire à l'axe longitudinal (L2), caractérisé
    - en ce qu'il présente sur sa circonférence extérieure une zone en forme de U (1.2) faisant suite à la zone plate avec une première partie de paroi (1.3) et une deuxième partie de paroi (1.4) qui sont reliées l'une à l'autre par une troisième partie de paroi (1.5),
    - l'anneau de couvercle (2) se mettant en prise par sa première extrémité (3C) dans la zone en forme de U (1.2) de la rondelle de couvercle (1), de telle manière que le première partie de paroi (1.3) repose sur la surface intérieure (3A) et la deuxième partie de paroi (1.4) repose sur la surface extérieure (3B), et que la première partie de paroi (1.3) et la deuxième partie de paroi (1.4) de la zone en forme de U (1.2) de la rondelle de couvercle sont assemblées par solidarité de matière avec la première extrémité (3c) de l'anneau de couvercle (2), et
    - en ce que la paroi (3) est rentrée vers l'intérieur en direction de l'axe longitudinal (L2) dans sa zone qui se met en prise dans la zone en forme de U (1.2) de la rondelle de couvercle (1) et un épaulement (3.1) est ainsi formé en dessous de la rondelle de couvercle.
  2. Couvercle selon la revendication 1, caractérisé en ce que le diamètre extérieur (D1) de la rondelle de couvercle (1) est plus petit que le diamètre intérieur (d3) de la paroi (3) de l'anneau de couvercle (2) au niveau de la deuxième extrémité (3D).
  3. Couvercle selon la revendication 1 ou 2, caractérisé en ce qu'il est empilable, le diamètre intérieur (d2) d'un couvercle (D) dépassant du diamètre extérieur (D1) d'un couvercle (D) qui se trouve en dessous et la deuxième extrémité (3C) reposant sur l'épaulement (3.1) du couvercle (D) qui se trouve en dessous.
  4. Couvercle (D) en papier, composé d'une rondelle de couvercle (1) et d'un anneau de couvercle (2) présentant un axe longitudinal (L2) avec une paroi (3) circulaire qui s'étend dans la direction de l'axe longitudinal (L2), comportant une surface intérieure (3A) et une surface extérieure (3B) ainsi qu'une première extrémité (3C) et une deuxième extrémité (3D), dans lequel la rondelle de couvercle (1) et l'anneau de couvercle (2) sont reliés l'une à l'autre par solidarité de matière et dans lequel la rondelle de couvercle (1) présente une zone plate (1.1) perpendiculaire à l'axe longitudinal (L2), caractérisé
    - en ce qu'il présente sur sa circonférence extérieure une zone en forme de U (1.2) faisant suite à la zone plate avec une première partie de paroi (1.3) et une deuxième partie de paroi (1.4) qui sont reliées l'une à l'autre par une troisième partie de paroi (1.5),
    - l'anneau de couvercle (2) se mettant en prise par sa première extrémité (3C) dans la zone en forme de U (1.2) de la rondelle de couvercle (1), de telle manière que la première partie de paroi (1.3) repose sur la surface intérieure (3A) et la deuxième partie de paroi (1.4) repose sur la surface extérieure (3B), et que la première partie de paroi (1.3) et la deuxième partie de paroi (1.4) de la zone en forme de U (1.2) de la rondelle de couvercle (1) sont assemblées par solidarité de matière avec la première extrémité (3c) de l'anneau de couvercle (2), et
    - les première et deuxième parties de paroi (1.3, 1.4) de la rondelle de couvercle (1) et l'extrémité (3C) de la paroi (3) de l'anneau de couvercle (2) qui se trouve entre elles étant orientées parallèlement à l'axe longitudinal (L2) de l'anneau de couvercle (2) et les première et deuxième parties de paroi (1.3, 1.4) s'étendant en ligne droite.
  5. Procédé pour la fabrication d'un couvercle (D) selon la revendication 1, dans lequel une rondelle de couvercle (1) conique étirée est d'abord produite, laquelle présente une région de bord (4) et une zone plate (1.1) décalée par rapport à celle-ci de la valeur d'un épaulement conique (5), un anneau de couvercle (2) est positionné avec une première extrémité (3C) d'une paroi (3) sur la circonférence extérieure de l'épaulement conique (5) ou à l'intérieur de l'épaulement conique (5) et au moins une zone de l'épaulement conique (5) est ensuite mise en forme contre une surface intérieure (3A) et la région de bord (4) contre une surface extérieure (3B) de la paroi (3) de l'anneau de couvercle (1) et soudée à celle-ci et la paroi (3) de l'anneau de couvercle (1) est rentrée, lors de l'assemblage avec la rondelle de couvercle (1), en direction de l'axe longitudinal (L2) de l'anneau de couvercle (1) ou la paroi de l'anneau de couvercle (1) est rentrée à une première extrémité (3c) en direction de l'axe longitudinal (L2) avant ou après l'assemblage avec la rondelle de couvercle (1).
  6. Procédé pour la fabrication d'un couvercle (D) selon la revendication 4, dans lequel une rondelle de couvercle (1) conique étirée est d'abord produite, laquelle présente une région de bord (4) et une zone plate (1.1) décalée par rapport à celle-ci de la valeur d'un épaulement conique (5), un anneau de couvercle (2) est positionné avec une première extrémité (3C) d'une paroi (3) sur la circonférence extérieure de l'épaulement conique (5) ou à l'intérieur de l'épaulement conique (5) et au moins une zone de l'épaulement conique (5) est ensuite mise en forme contre une surface intérieure (3A) et la région de bord (4) contre une surface extérieure (3B) de la paroi (3) de l'anneau de couvercle (1) et soudée à celle-ci, une première et une deuxième parties de paroi (1.3, 1.4) de la rondelle de couvercle (1) et l'extrémité (3C) de la paroi (3) de l'anneau de couvercle (2) qui se trouve entre elles étant orientées parallèlement à un axe longitudinal (L2) de l'anneau de couvercle (2) et les première et deuxième parties de paroi (1.3, 1.4) s'étendant en ligne droite.
EP21154816.9A 2020-02-13 2021-02-02 Couvercle en papier, ainsi que son procédé de fabrication Active EP3865419B1 (fr)

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DE102020103806.2A DE102020103806A1 (de) 2020-02-13 2020-02-13 Deckel aus Papier sowie Verfahren zu dessen Herstellung

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DE102021126861A1 (de) 2021-10-15 2023-04-20 Gebrüder Leonhardt GmbH & Co. KG Blema Kircheis Deckel sowie Verfahren und Vorrichtung zur Herstellung eines Deckels

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DE830891C (de) 1949-07-26 1952-02-07 Nils Andersson Behaelterverschlussdeckel aus Papier sowie Verfahren und Maschine zur Herstellung desselben
US3434651A (en) * 1967-05-12 1969-03-25 Continental Can Co Mesh reinforced closure for full opening can
US8672163B2 (en) * 2009-01-14 2014-03-18 Yeong Leul Kim Reinforced paper lid
EP2674369B1 (fr) 2012-06-13 2022-08-17 Michael Hörauf Maschinenfabrik GmbH u. Co. KG Couvercle en plusieurs parties constitué d'un matériau papier et procédé de fabrication d'un couvercle en plusieurs parties
CN104703891A (zh) 2012-08-22 2015-06-10 米德韦斯瓦科公司 纸质容器盖子
DE102014219272A1 (de) 2014-09-24 2016-03-24 Ptm Packaging Tools Machinery Pte. Ltd. Deckel für einen Getränkebecher, Becheranordnung und Verfahren zur Herstellung eines Deckels

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US20210253308A1 (en) 2021-08-19
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EP3865419A1 (fr) 2021-08-18

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