EP0627360B1 - Ring zum Abdichten von Konservengläsern - Google Patents

Ring zum Abdichten von Konservengläsern Download PDF

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Publication number
EP0627360B1
EP0627360B1 EP19940401075 EP94401075A EP0627360B1 EP 0627360 B1 EP0627360 B1 EP 0627360B1 EP 19940401075 EP19940401075 EP 19940401075 EP 94401075 A EP94401075 A EP 94401075A EP 0627360 B1 EP0627360 B1 EP 0627360B1
Authority
EP
European Patent Office
Prior art keywords
ring
zone
washer
seal according
projection
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.)
Expired - Lifetime
Application number
EP19940401075
Other languages
English (en)
French (fr)
Other versions
EP0627360A1 (de
Inventor
Didier Levassort
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.)
Hutchinson SA
Original Assignee
Hutchinson SA
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 Hutchinson SA filed Critical Hutchinson SA
Publication of EP0627360A1 publication Critical patent/EP0627360A1/de
Application granted granted Critical
Publication of EP0627360B1 publication Critical patent/EP0627360B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/02—Collars or rings

Definitions

  • the present invention relates to a seal mounted between the body and the cover of a canning jar, in particular made of glass, the seal being formed of a washer of flexible material comprising a lateral gripping projection, and a first zone d weakening formed by a resistance line different from that of the material constituting the washer and which extends from a junction point between the lateral projection and the washer, at or near the internal periphery of the washer .
  • a depression is created inside it. Maintaining the cover on the body of the jar is ensured by the pressure difference between the inside of the jar and the outside which is at atmospheric pressure, and by a metal frame designed so as to have sufficient elasticity not to oppose the evacuation of the air contained in the jar during the sterilization operation.
  • an air inlet is generally caused to balance the pressures inside and outside the jar. This air intake is obtained by pulling strongly on the gripping member of the washer which projects outside the jar. Then, it suffices to unhook the metal armature to complete this operation of opening the cover, unless the armature has been unhooked before.
  • the washer is provided with at least one projection lateral gripping external associated with a weakening zone formed by a resistance line different from that of the rubber and which is formed on the washer between the junction of the lateral projection with the washer, and the internal periphery of the latter.
  • the zone in which the different resistance line is formed is made of a rubber having a lower breaking strength than that of the rubber which constitutes the assembly of the washer.
  • the object of the invention is to overcome this drawback by perfecting this type of seal so that the tear in the washer follows as closely as possible the line defined by the weakening zone.
  • the invention provides a seal of the aforementioned type, which is characterized in that it comprises a second weakening zone similar to the first weakening zone, these two zones being generally situated on the side and on the other side of the gripping side projection.
  • the lateral grip zone and the part of the washer situated between the two weakening zones are made of a material having characteristics different from the material forming the rest of the washer, the two zones weakening being advantageously constituted by the two lines of junction between the two materials.
  • At least one additional weakening zone formed by a cutout and / or a notch which is situated towards the internal peripheral edge of the washer.
  • This additional weakening zone can advantageously be filled with any filling material.
  • this tear will continue at least along the associated weakening zone, possibly joining the complementary weakening zone, when this is present, in order to facilitate the opening of the cover.
  • the seals illustrated in FIGS. 1 to 4 consist of a washer made of flexible material placed between the body and the cover of a jar (not shown) on which there are provided suitable surfaces for sealing the jar. when closing the cover, with an articulated metal frame (not shown) mounted between the body and the cover of the jar.
  • the washer 1 has an external lateral gripping projection 2, with two weakening zones L1 and L2 located on either side other of the lateral gripping projection 2 and each extending generally from the external periphery to the internal periphery or in the vicinity thereof, of the washer 1.
  • the lateral gripping projection 2 and the part 2a of the washer located between the two weakening zones L1 and L2, and the rest of the washer 1 are made of two different materials. More precisely, these two materials are rubber for example, but having different properties. Under these conditions, the two junction lines between the two constituent materials of the washer 1 will advantageously form the two weakening zones L1 and L2, these two lines being substantially symmetrical to each other with respect to an axis AA corresponding to the diameter of the washer 1 generally passing through the central part of the gripping projection 2.
  • the washer is shaped during a simultaneous extrusion operation of a main mass of rubber which constitutes the bulk of the washer 1, and of a lesser amount of rubber or other material for example , having a resistance to rupture different from that of the rubber constituting most of the washer 1, and which forms the lateral gripping projection 2 and the part 2a of the washer 1 situated between the two joining lines of the two materials.
  • the washer 1 as illustrated in FIG. 2 has at least one additional weakening zone 5 formed by a notch formed on the internal peripheral edge of the washer 1 and in the part 2a of this one integral with the lateral gripping projection 2.
  • the complementary weakening zone is formed by a cutout 6, such as a hole, made in the vicinity of the internal periphery of the washer 1 and in the part 2a of the washer 1 which is integral with the lateral gripping projection 2.
  • the lateral gripping projection 2 is extended by an elbow 2b, while the other characteristics relating to the weakening zones L1 and L2 are similar to those of the washer illustrated in FIG. 3.
  • the opening of the jar is effected by exerting a tensile force effect on the lateral gripping projection 2, in a direction indicated by the arrow F which is generally parallel to the axis AA.
  • This traction will cause a tear initiation at least along one of the weakening zones L1 and L2, this tearing then continuing to the internal peripheral edge of the washer 1.
  • the two weakening zones L1 and L2 may very well stop in the vicinity of the internal periphery of the washer 1 and be joined to each other by a junction line L3, as indicated in dashed lines in Figure 1.

Landscapes

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

Claims (7)

  1. Dichtung zum Abdichten der Verbindung zwischen dem Körper und dem Deckel eines Konservierungsgefäßes, insbesondere eines Glasgefäßes, wobei die als Ring ausgebildete Dichtung aus einem biegsamen Material besteht und einen seitlichen Fortsatz zum Angreifen und einen ersten Schwächungsbereich mit unterschiedlicher Festigkeit als jene des Ringmaterials aufweist und wobei sich dieser erste Bereich von einem Verbindungspunkt zwischen dem seitlichen Fortsatz und dem Ring bis zur inneren Umrandung oder in die Nähe derselben erstreckt, dadurch gekennzeichnet, daß der Ring einen zweiten Schwächungsbereich (L2) aufweist, welcher mit dem ersten Schwächungsbereich (L1) vergleichbar ist, und diese zwei Schwächungsbereiche zu beiden Seiten des seitlichen Fortsatzes (2) angeordnet sind.
  2. Dichtung nach Anspruch 1, dadurch gekennzeichnet, daß der seitliche Fortsatz (2) und der Teil (2a) des Ringes (1), welcher zwischen den zwei Schwächungsbereichen (L1, L2) liegt, aus einem Material mit unterschiedlichen Eigenschaften als jenes Material, welches den restlichen Fing (1) bildet, hergestellt sind, wobei die zwei Schwächungsbereiche (L1, L2) durch die Verbindungslinie zwischen den zwei Materialien gebildet werden.
  3. Dichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie zumindest einen komplementären Schwächungsbereich (5, 6) aufweist, welcher in der Nähe der inneren Berandung des Ringes (1) ausgebildet ist.
  4. Dichtung nach Anspruch 3, dadurch gekennzeichnet, daß der komplementäre Schwächungsbereich (5) durch einen Anschnitt gebildet wird, der an der inneren Berandung des Ringes (1) vorgesehen ist.
  5. Dichtung nach Anspruch 3, dadurch gekennzeichnet, daß der komplementäre Schwächungsbereich durch einen Ausschnitt (6), wie ein Loch, gebildet wird, welcher im Bereich der inneren Berandung des Ringes (1) ausgebildet ist.
  6. Dichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß der komplementäre Schwächungsbereich (5, 6) durch ein Füllmaterial ausgefüllt ist.
  7. Dichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß der seitliche Fortsatz (2) zum Angreifen durch ein Bogenstück (2b) verlängert ist.
EP19940401075 1993-05-25 1994-05-13 Ring zum Abdichten von Konservengläsern Expired - Lifetime EP0627360B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9306191 1993-05-25
FR9306191A FR2705647B1 (fr) 1993-05-25 1993-05-25 Joint d'étanchéité entre le corps et le couvercle d'un bocal de conserve.

Publications (2)

Publication Number Publication Date
EP0627360A1 EP0627360A1 (de) 1994-12-07
EP0627360B1 true EP0627360B1 (de) 1996-12-27

Family

ID=9447394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940401075 Expired - Lifetime EP0627360B1 (de) 1993-05-25 1994-05-13 Ring zum Abdichten von Konservengläsern

Country Status (3)

Country Link
EP (1) EP0627360B1 (de)
DE (1) DE69401240T2 (de)
FR (1) FR2705647B1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142590A (en) * 1938-04-02 1939-01-03 Boston Woven Hose & Rubber Com Rubber sealing ring
DE933307C (de) * 1952-11-11 1955-09-22 Karl Mayer Dichtungsring fuer Einkochgefaesse
FR2585003B1 (fr) * 1985-07-17 1988-03-04 Hutchinson Perfectionnements apportes aux joints d'etancheite pour bocaux de conserves ou recipients analogues, aux procedes et aux outillages mis en oeuvre pour leur fabrication

Also Published As

Publication number Publication date
DE69401240D1 (de) 1997-02-06
FR2705647B1 (fr) 1995-07-21
FR2705647A1 (fr) 1994-12-02
DE69401240T2 (de) 1997-07-24
EP0627360A1 (de) 1994-12-07

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