EP0552091B1 - Ring zum Abdichten von Konservengläsern - Google Patents

Ring zum Abdichten von Konservengläsern Download PDF

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Publication number
EP0552091B1
EP0552091B1 EP93400058A EP93400058A EP0552091B1 EP 0552091 B1 EP0552091 B1 EP 0552091B1 EP 93400058 A EP93400058 A EP 93400058A EP 93400058 A EP93400058 A EP 93400058A EP 0552091 B1 EP0552091 B1 EP 0552091B1
Authority
EP
European Patent Office
Prior art keywords
zone
weakness
washer
sealing ring
ring according
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
EP93400058A
Other languages
English (en)
French (fr)
Other versions
EP0552091A1 (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 EP0552091A1 publication Critical patent/EP0552091A1/de
Application granted granted Critical
Publication of EP0552091B1 publication Critical patent/EP0552091B1/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 improvements made to the seals which seal between the body and the lid of a canning jar, in particular made of glass, the seal being formed of a rubber washer comprising at least one external lateral projection for gripping. , and a first weakening zone of a first type, formed of a resistance line different from that of the rubber and which extends from the junction between the lateral projection and the washer, at the internal periphery of the washer or close to it.
  • 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, just unhook the metal frame to complete this operation of opening the cover.
  • the washer is provided with at least one lateral projection for gripping on the outside 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 providing an improvement to 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 proposes a seal of the aforementioned type, which is characterized in that the first weakening zone of a first type, formed of a resistance line different from that of the rubber, is associated to a second weakening zone of a second type, formed by at least one notch or cut located near the first weakening zone.
  • the second weakening zone consists of a cut such as a hole located near the internal edge of the puck and in line with the line defined by the first weakening zone.
  • the second weakening zone is formed by at least two holes situated respectively on either side of the first weakening zone.
  • the second weakening zone is constituted by one or more notches formed on the internal edge of the washer and which can be in extension or located respectively on either side of the first weakened area.
  • the holes and / or cutouts made in the washer to form the second weakening zone can be filled with any filling material.
  • the seals illustrated in FIGS. 1 to 4 consist of a rubber washer placed between the body and the cover of a jar (not shown) on which there are provided suitable surfaces to ensure the jar is sealed during closing the cover, with an articulated metal frame (not shown) mounted between the body and the cover of the jar.
  • the washer 1 comprises two external lateral gripping projections 2 close to one another, a first weakening zone 3 of a first type associated with a zone of attenuation 5 of a second type.
  • the first weakening zone 3 is constituted by a rectilinear radial zone which extends from the junction point 2a between the two lateral projections 2 towards the internal periphery of the washer 1, without reaching the latter.
  • This weakening zone 3 is produced for example, during the operation of shaping the washer 1, by a simultaneous extrusion of a main mass of rubber which constitutes the bulk of the washer 1, and of a small quantity of rubber or other material, for example, having a breaking strength different from that of the rubber constituting the washer 1.
  • the second weakening zone 5 is constituted by a cutout formed by a hole through the washer 1. This hole 5 is centered overall on the diametrical axis AA passing through the junction point 2a of the two lateral projections 2. In this example, hole 5 is located near the inner periphery of the washer 1 and in the extension of the first weakening zone 3.
  • FIG. 2 A variant of this embodiment is shown in FIG. 2, where the second weakening zone is constituted by at least two holes 5 situated respectively on either side of the first weakening zone 3, and in the vicinity of the inner periphery of the washer 1.
  • the second weakening zone 5 is formed by two notches 6 formed at the internal periphery of the washer 1, and located respectively on either side of the first attenuation 3 and in the vicinity thereof.
  • the second weakening zone is constituted by at least one hole 5 located in the vicinity of the internal periphery of the washer 1, or as a variant by at least one notch 6 situated at said periphery.
  • the user grasps the two external lateral gripping projections 2 and exerts two traction forces in two opposite directions (represented by the arrows F1 and F2) , directions substantially parallel to the tangent of the washer 1 passing through the junction point 2a between the two lateral projections 2.
  • the washer 1 then tears along the axis AA, tear which begins without problem because it corresponds to a party outside of the washer not tightened between the body and the jar cover. Then, the tear will continue overall along the first weakening zone 3, the presence of the second weakening zone formed by the holes 5 in FIGS. 1 and 2 and by the two notches 6 in FIG. 3, allowing the tear to substantially follow the weakening zone 3 along the axis AA and without deviating from it or to join the second weakening zone 5 located towards the inside of the washer 1.
  • the user grasps the lateral projection 2 at his elbow 2b, and exerts a tensile force in the direction F3 which is substantially perpendicular to the first weakening zone 3.
  • F3 tensile force
  • the first weakening zone can be given a flared shape in the direction of the internal periphery of the washer 1, as schematically illustrated by dashed lines in FIG. 2, and the second weakening zone 5 in the embodiment of Figure 4 may be radial.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Pens And Brushes (AREA)
  • Gasket Seals (AREA)
  • Package Closures (AREA)

Claims (8)

  1. Dichtung zwischen dem Gefaß und dem Deckel eines Konservenbehälters, insbesondere aus Glas, wobei die Dichtung durch einen Gummiring gebildet wird, welcher zumindest eine seitliche Verlängerung zum Angreifen und einen ersten Schwächungsbereich einer ersten Art aufweist, der eine Linie mit unterschiedlicher Festigkeit des Gummis darstellt und sich von dem Verbindungspunkt der seitlichen Verlangerung und dem Ring bis zu der inneren Berandung des Ringes oder in die Nähe derselben erstreckt, dadurch gekennzeichnet, daß der Schwächungsbereich (3) der ersten Art einem zweiten Schwächungsbereich einer zweiten Art zugeordnet ist, welcher zumindest einen Ausschnitt (5) oder einen Einschnitt (6) bildet, welcher in der Nähe des ersten Schwächungsbereichs (3) angeordnet ist.
  2. Dichtung nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Schwächungsbereich durch einen Ausschnitt (5), wie einem Loch, gebildet wird, welches in der Nähe der inneren Berandung des Ringes (1) und in der Verlängerung des ersten Schwächungsbereichs (3) angeordnet ist.
  3. Dichtung nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Schwächungsbereich durch zwei Ausschnitte (5) gebildet wird, welche aus zwei Löchern bestehen, die zu beiden Seiten des ersten Schwächungsbereichs (3) angeordnet sind.
  4. Dichtung nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Schwächungsbereich durch zwei Einschnitte (6) gebildet wird, welche an der inneren Berandung des Ringes (1) und zu beiden Seiten des ersten Schwächungsbereichs (3) angeordnet sind.
  5. Dichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der zweite Schwächungsbereich (5) durch ein Füllmaterial aufgefüllt ist.
  6. Dichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß der Ring (1) eine seitliche Verlangerung zum Angreifen (2) aufweist, die durch einen Bogen (2b) verlängert ist, und daß der erste Schwächungsbereich (3) geneigt verläuft.
  7. Dichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Ring (1) eine seitliche Verlangerung zum Angreifen (2) aufweist, die durch einen Bogen (2b) verlängert ist, und daß der erste Schwächungsbereich (3) radial verläuft.
  8. Dichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß der genannte Schwächungsbereich (3) durch Extrusion zugleich aus einer Gummimasse, welche den Großteil des Ringes (1) bildet, und einem anderen Material hergestellt wird. welches eine unterschiedliche Reißfestigkeit besitzt als Gummi.
EP93400058A 1992-01-17 1993-01-13 Ring zum Abdichten von Konservengläsern Expired - Lifetime EP0552091B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200450A FR2686318B1 (fr) 1992-01-17 1992-01-17 Perfectionnements apportes aux joints qui assurent l'etancheite entre le corps et le couvercle d'un bocal de conserve.
FR9200450 1992-01-17

Publications (2)

Publication Number Publication Date
EP0552091A1 EP0552091A1 (de) 1993-07-21
EP0552091B1 true EP0552091B1 (de) 1995-07-19

Family

ID=9425714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400058A Expired - Lifetime EP0552091B1 (de) 1992-01-17 1993-01-13 Ring zum Abdichten von Konservengläsern

Country Status (5)

Country Link
EP (1) EP0552091B1 (de)
AT (1) ATE125226T1 (de)
DE (1) DE69300264T2 (de)
ES (1) ES2078803T3 (de)
FR (1) FR2686318B1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091913A (en) * 1935-11-15 1937-08-31 Boston Woven Hose & Rubber Cor Rubber sealing ring
DE810228C (de) * 1949-03-26 1951-08-06 Josef Schuster Verschluss fuer Konservenglaeser
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
DE69300264T2 (de) 1996-04-04
DE69300264D1 (de) 1995-08-24
EP0552091A1 (de) 1993-07-21
FR2686318A1 (fr) 1993-07-23
FR2686318B1 (fr) 1995-05-05
ATE125226T1 (de) 1995-08-15
ES2078803T3 (es) 1995-12-16

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