EP0618384A2 - Joint annulaire - Google Patents

Joint annulaire Download PDF

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Publication number
EP0618384A2
EP0618384A2 EP93117963A EP93117963A EP0618384A2 EP 0618384 A2 EP0618384 A2 EP 0618384A2 EP 93117963 A EP93117963 A EP 93117963A EP 93117963 A EP93117963 A EP 93117963A EP 0618384 A2 EP0618384 A2 EP 0618384A2
Authority
EP
European Patent Office
Prior art keywords
sealing ring
sealing
projection
lid
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.)
Withdrawn
Application number
EP93117963A
Other languages
German (de)
English (en)
Other versions
EP0618384A3 (fr
Inventor
Dr. Osen Ernst
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.)
Pohl GmbH and Co KG
Original Assignee
Pohl GmbH and Co KG
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 Pohl GmbH and Co KG filed Critical Pohl GmbH and Co KG
Publication of EP0618384A2 publication Critical patent/EP0618384A2/fr
Publication of EP0618384A3 publication Critical patent/EP0618384A3/fr
Withdrawn legal-status Critical Current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 invention relates to a lid seal for a container opening, which is enclosed by a sealing surface, comprising a deformable sealing ring which can be pressed between the lid and the sealing surface, the sealing surface being arranged on a projection.
  • the sealing ring consists of an elastomeric material that is vulcanized and solidified in the course of heating over a long period of time to a temperature of approx. 180 ° C. As a result, its manufacture is economically burdened to a considerable extent.
  • Thermoplastic, elastomeric materials are also known. After heating to the forming temperature, these can be converted into the desired shape by injection molding and have the desired elastic properties immediately after the subsequent cooling. However, the materials are not creep-resistant. For this reason, a long-lasting, static load means that a molded part produced from it does not retain its original shape. This is a major disadvantage with regard to use for the production of seals. In most cases, seals are arranged between mating surfaces rigidly assigned to one another. The sealing effect achieved is based on the fact that the compression seal in the long-term use opposed to an unchanged high counterforce.
  • the invention has for its object to show a cover seal of the type mentioned, which makes it possible to ensure a reliable sealing result over long periods of time even if the cover of the sealing surface are assigned in an unchangeable position and if the sealing ring made of a thermoplastically processable elastomeric material.
  • the sealing ring is arranged in a groove which has a cross section widening in the direction of the mouth thereof, that the surfaces delimiting the groove in the direction of the sealing ring can be brought into engagement with the projection and that between the sealing ring and an annular gap is present with at least one surface in the unpressed state Total volume which is essentially as large as the displacement volume of the sealing ring which results when the sealing ring is pressed against the sealing surface.
  • the sealing ring is statically supported in the pressed state by comparatively uncompromising components of the cover and the sealing surface, which counteracts creeping processes of the material body forming the sealing ring already in the initial stage and ensures largely unchanged pressing forces on the cover and on the sealing surface on the one hand over long periods of time .
  • Reliable sealing results in the area of the container opening can also be achieved over long periods of time, even with the use of sealing rings which are made of a thermoplastically processable, elastomeric material.
  • the groove can be delimited on at least one side by a collar projecting annularly from the cover.
  • the cross section can be expanded to a limited extent, which makes it easier to compensate for manufacturing tolerances which can influence the conditions in the area of the sealing gap.
  • the groove can be produced particularly easily if the radial gap between it and the sealing ring has a profile which is flared in the direction of the sealing surface.
  • there is an alignment of all deformation forces in the direction of the sealing surface which is advantageous for achieving a good sealing result.
  • the sealing ring on the side facing the sealing surface is delimited by at least two sealing lips which surround one another in the radial direction.
  • the space between the individual sealing lips can be very small.
  • the effect of a tandem seal nevertheless results, which is a great advantage.
  • Manufacturing tolerances of parts influencing the dimensional conditions in the sealing gap can be largely compensated for if the collar has a tapered profile in the direction of the sealing surface.
  • the profile can be at least partially brought into an overlapping position with the projection and the collar can be flexible.
  • a collar is provided radially outside of the sealing ring with an extension extending parallel to the projection, an undercut being provided in the region of the extension, which can be snapped behind a radially outwardly projecting annular bead of the projection.
  • annular bead is always present, for example, at the mouth of medication or beverage bottles. It can be simply pressed on using a seal having the above features of a lid that already contains the sealing ring, securely close for long periods.
  • the sealing ring is molded onto the cover and solidified during its manufacture.
  • the resulting liability prevents the sealing ring from being accidentally lost. It no longer needs to be inserted separately when mounting the cover, which makes it easier to attach the cover if necessary using automatic sealing machines.
  • the direct molding of the sealing ring on the cover ensures a high degree of dimensional accuracy and prevents the occurrence of unfavorable positions during assembly.
  • the cover can be provided with a perforation radially inside the sealing ring, the opening being filled by a first attachment of the sealing ring.
  • the cover is made of an essentially rigid material, for example polypropylene
  • the sealing ring and the first attachment are made of a soft, elastic material, for example made of thermoplastic rubber.
  • this ensures a good seal of the cover in the area of the sealing surface, and on the other hand offers the possibility of easily perforating the cover in the area of the first attachment.
  • liquid components can be removed from the container without the need to remove the lid beforehand. This is of great advantage with regard to the sterility of the removed liquid components.
  • the opening filled in with the first approach can be on the side of the lid facing away from the container mouth be enclosed in an axially open groove, in which a second sealing ring, which can be brought into contact with a protective cap and is brought into contact with one another, is arranged.
  • a second sealing ring which can be brought into contact with a protective cap and is brought into contact with one another.
  • the protective cap and / or the second sealing ring touch one another with an annular projection. This also ensures the pressure required to achieve a good sealing result.
  • the corresponding sealing zone surrounds the zone in which the pierceable first attachment is arranged in a ring on all sides. The surface of the first batch can thus be obtained in a particularly reliable manner in a sterile state.
  • a sleeve which can be inserted into the container opening and has a radial distance from the projection can be provided on the lid, the gap formed by the distance being at least partially filled by a third sealing ring which contacts the projection in a sealing manner.
  • the third sealing ring is assigned to the sealing ring in a series connection, which noticeably improves the overall sealing result achieved. Its sealing effect can also be used to keep the contents of the liquid contained in the container sterile until it is permanently closed and the first sealing ring is activated.
  • the cover seal can be produced particularly advantageously if the first, the second and the third sealing ring and the first attachment are made in one piece and merge from one another from a uniform block of material. In this case, the individual components are also captively attached to the lid, which considerably simplifies disposal.
  • the lid 4 shown in Fig. 1 in longitudinal section consists of a molded part made of polypropylene. It is received in a sleeve 19 made of metallic material, which overlaps it with a radially inwardly projecting collar. On the upward-facing side of the collar, a cover cap 18 is removably attached, which is also made of polypropylene.
  • the lid 4 is provided in the area of its underside with a circumferential groove in which a directly molded sealing ring 3 made of an elastomer material that can be processed in a thermoplastic manner is fixed.
  • the groove has a cross section widened in the direction of its mouth, the surfaces delimiting the groove radially in the direction of the sealing ring being separated from the sealing ring by a gap which has a cross section which is increasingly widened radially in the direction of its mouth.
  • the total volume of these two, annular gaps is in the we notably as large as the displacement volume of the sealing ring 3 which results from a sealing promotion of the sealing ring 3 to a sealing surface to be sealed.
  • the sealing ring 3 is provided in the region of its projecting end with two concentrically surrounding sealing lips 8 which can be brought into engagement with the surface to be sealed.
  • the cover 4 is provided radially inside the sealing ring 3 with an opening, the opening being continuously filled by a first extension 11 of the sealing ring 3.
  • the first attachment 11 has two weakening points which can be easily pierced by means of an injection needle.
  • the opening is enclosed on the side of the lid facing upwards and away from the container mouth by a groove which is open in the axial direction, a second sealing ring being arranged in the groove.
  • the cover cap 18 is provided in the region of the second sealing ring with an annular projection which is tapered in cross section at the projecting end.
  • the ring projection can be brought into engagement with the second sealing ring in a sealing manner, as a result of which the radially inner region and in particular the region of the first attachment are protected against exposure to living organisms and / or dirt.
  • the sealing ring 3, the second sealing ring 12 and the projection 11 are integrally formed and merge into one another and are adhesively connected to the preformed cover 4 by the direct molding.
  • Fig. 2 shows the lid described above in the fully assembled state and on the mouth of a medication bottle.
  • the annular bead surrounding the mouth on the outside is undercut by the radially inwardly flanged lower edge of the sleeve 19, as a result of which the spatial position of the cover 4, with respect to the mouth, is fixed thereon.
  • the sealing ring 3 is deformed to such an extent that the gaps and free spaces originally present are completely filled.
  • the sealing ring 3, which is made of a thermoplastic, elastomeric material is largely supported by the cover 4 in such a way that an almost unchanged contact pressure with respect to the sealing surface 2 results over very long periods. This is the basic prerequisite for achieving a good long-term sealing result.
  • the cover 4 is provided with an integrally molded sleeve 15 which can be inserted into the container opening 1 and which is at a radial distance from the inner wall of the projection 5, the gap formed by the distance being provided by a third sealing ring 16 is filled with a rectangular profile.
  • the third sealing ring 16 is integrally merged with the first sealing ring 3, the second sealing ring 12 and the first shoulder 11 and is produced in one piece with the latter.
  • the purpose of the container is to prevent foreign substances from entering the container while it is being transferred to a sealing station that is separate from the filling station.
  • an aluminum protective film 13 is removably attached. It is intended to prevent foreign substances from being applied to the top.
  • the lid shown in Fig. 4 in longitudinal section corresponds to that described above.
  • the third sealing ring 16 is different with two radial outwardly projecting sealing lips 17, which facilitates insertion into the container mouth.
  • Fig. 5 shows the lid 4 described above in a view from above and after the previous removal of the protective cap or film. This is intended to clarify the spatial arrangement and extent of the second sealing ring 12 and the first extension 11 and of the overflow channel 20, which is also filled with the thermally softenable elastomeric material and which forms the connection to the first sealing ring 3, which cannot be seen in FIG. 5 . This is arranged on the underside of the cover 4.
  • 6 and 7 refer to a fourth embodiment of a cover, which differs from the ones described above in that a collar 7 is provided on the cover 4 radially outside the sealing ring 3 with an extension 9 extending parallel to the projection 5 , an undercut being provided in the area of the extension 9, which can be snapped behind a radially outwardly projecting annular bead 10 of the projection 5.
  • the lid is then immovably attached to the mouth of the container.
  • the relevant state is shown in the left part of the illustration, while the right part of the illustration refers to the joining process. It can also be seen here that there is a radial gap between the sealing ring 3 and the boundary surfaces of the groove receiving it, which are located radially on the inside and outside thereof.
  • the groove is delimited on the radially inward-facing side by a collar 7 which has a tapered profile in the direction of the sealing surface 2.
  • the profile can be partially brought into a position overlapping with the projection 5 during the joining process, as can be seen in the left part of the illustration in FIG. 6. This results in a certain flexibility of the surface delimiting the groove in the inner side, which makes it possible to compensate for the manufacturing tolerances to the required extent.
  • FIGS. 8 and 9 largely corresponds to that described above.
  • a crimp capsule made of metallic material is used again, which, analogously to the embodiment according to FIGS. 1 and 2, surrounds the annular bead 10 of the container mouth and the lid 4 in a U-shape. Further details are shown in FIG. 9.
  • 10 and 11 refer to an embodiment which is designed similarly to the embodiment according to FIGS. 8 and 9, but in addition, analogously to FIGS. 1 and 2, a second sealing ring is provided which engages with an annular projection of the Lid can be brought.
  • the protective cap 13 is designed to be removable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP93117963A 1993-03-25 1993-11-05 Joint annulaire. Withdrawn EP0618384A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934309654 DE4309654C2 (de) 1993-03-25 1993-03-25 Ringförmige Dichtung
DE4309654 1993-03-25

Publications (2)

Publication Number Publication Date
EP0618384A2 true EP0618384A2 (fr) 1994-10-05
EP0618384A3 EP0618384A3 (fr) 1995-11-02

Family

ID=6483788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93117963A Withdrawn EP0618384A3 (fr) 1993-03-25 1993-11-05 Joint annulaire.

Country Status (3)

Country Link
EP (1) EP0618384A3 (fr)
JP (1) JPH06298272A (fr)
DE (1) DE4309654C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29619332U1 (de) * 1996-11-07 1996-12-19 Leybold Vakuum GmbH, 50968 Köln Halterung für mehrteilige Dichtsysteme

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2949445B1 (fr) * 2009-08-31 2011-11-25 Urgo Lab Contenant hermetique
JP6373044B2 (ja) * 2014-04-10 2018-08-15 三笠産業株式会社 合成樹脂製キャップ
MX379729B (es) * 2016-03-04 2025-03-11 Csp Technologies Inc Recipiente y tapa.
CN118121803A (zh) * 2022-12-01 2024-06-04 传思生物公司 雾化结构及吸入装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908434U (de) * 1964-11-05 1965-01-14 Eisenwerk Streuber & Lohmann H Schraubkappe mit eingelegtem dichtungsring.
US3888377A (en) * 1973-05-30 1975-06-10 Reinhard Stadler Closure cap for an infusion flask
JPS5629723A (en) * 1979-08-15 1981-03-25 Nissan Motor Co Ltd Operating device of automatic transmission
US4674650A (en) * 1985-10-07 1987-06-23 E. I. Du Pont De Nemours And Company Container and cover fastening means
JPS62188690A (ja) * 1986-02-14 1987-08-18 三菱重工業株式会社 作業ロボツトの駆動系揺動抑制装置
US4854476A (en) * 1988-07-25 1989-08-08 Serco Mold, Inc. Container and perimeter seal therefor
JP2811801B2 (ja) * 1989-09-18 1998-10-15 三菱化学株式会社 アクチュエータ用圧電セラミック組成物
US5050764A (en) * 1990-03-08 1991-09-24 Pacesetter Infusion, Ltd. Lateral compression sealing system and method of making seal
US5717940A (en) * 1995-04-28 1998-02-10 Ricoh Company, Ltd. Method of selecting a target document using features of an example page

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29619332U1 (de) * 1996-11-07 1996-12-19 Leybold Vakuum GmbH, 50968 Köln Halterung für mehrteilige Dichtsysteme

Also Published As

Publication number Publication date
DE4309654C2 (de) 1995-04-13
DE4309654A1 (de) 1994-09-29
EP0618384A3 (fr) 1995-11-02
JPH06298272A (ja) 1994-10-25

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