EP0892743B1 - Capuchon de fermeture, son procédé d'assemblage, et récipient équipé de ce capuchon - Google Patents

Capuchon de fermeture, son procédé d'assemblage, et récipient équipé de ce capuchon Download PDF

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Publication number
EP0892743B1
EP0892743B1 EP97907211A EP97907211A EP0892743B1 EP 0892743 B1 EP0892743 B1 EP 0892743B1 EP 97907211 A EP97907211 A EP 97907211A EP 97907211 A EP97907211 A EP 97907211A EP 0892743 B1 EP0892743 B1 EP 0892743B1
Authority
EP
European Patent Office
Prior art keywords
disc
closure
container
band
engagement
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
EP97907211A
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German (de)
English (en)
Other versions
EP0892743A1 (fr
Inventor
Cyril Hadyn Saunders
Thomas H. Hayes
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.)
Crown European Holdings SA
Crown Packaging UK Ltd
Original Assignee
CarnaudMetalbox SA
CarnaudMetalbox PLC
Metal Box PLC
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 GBGB9606378.9A external-priority patent/GB9606378D0/en
Application filed by CarnaudMetalbox SA, CarnaudMetalbox PLC, Metal Box PLC filed Critical CarnaudMetalbox SA
Publication of EP0892743A1 publication Critical patent/EP0892743A1/fr
Application granted granted Critical
Publication of EP0892743B1 publication Critical patent/EP0892743B1/fr
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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/14—Rigid discs or spherical members adapted to be held in sealing engagement with mouth of container, e.g. closure plates for preserving jars
    • B65D51/145—Rigid discs or spherical members adapted to be held in sealing engagement with mouth of container, e.g. closure plates for preserving jars by means of an additional element connected directly to the container

Definitions

  • This invention relates to composite closures for packaging containers, that is to say, closures having a sealing disc arranged as an insert to overlie and seal with the mouth-defining rim of the container, and an open-ended, tubular plastics band in which the disc is fitted and retained.
  • the band of such a closure is formed internally with one or more thread or snap-engagement formations which are capable of engaging with a complementary formation or formations on the container to attach the closure and the container together.
  • composite closures have various advantages over conventional closures (i.e. those having non-apertured crowns), and they are widely used for food products which either are filled hot or are pasteurised or sterilised in the container.
  • a form of composite closure is known from European patent specification No. 0272431B1 (Agents ref. 4386), in which the insert disc is cut and stamped from a multilayer extruded plastics material so as to have a circular inner portion surrounded by a generally C-shaped outer portion.
  • the outer portion of the insert disc forms a downwardly facing annular channel by which the container rim is received in sealing relation, the inner portion then overlying and closing the container mouth.
  • US Patent 4782968 Another composite closure having a plastics or substantially plastics insert disc is shown in US Patent 4782968.
  • the disc may be cut from a plane plastics sheet, with the accompanying cost advantages over discs which have a non-planar configuration by use of an appropriate manufacturing method, e.g. by thermoforming.
  • an appropriate manufacturing method e.g. by thermoforming.
  • the assembly of the closure requires the disc to be secured peripherally to the tubular band of the closure.
  • the securing operation which is achieved by spin-welding, induction-sealing or mechanical clinching, is an added cost of manufacture.
  • the attachment of the disc to the band will restrict the ability of the disc to conform itself to the container finish with which it is required to seal, and may limit the applications for which the closure may be used because of the need to avoid excessive stresses at the interconnection made between the two components.
  • Failures in seal integrity may have their origin when the disc is being assembled with the band in the initial creation of the closure, and/or they may be caused by the forces which are imposed on the band and the disc during a capping operation to fit the closure subsequently onto a container. Whatever their origin, Applicants have discovered that the sealing failures can be substantially reduced if in the assembled closures the discs are subjected to radially inward compressive forces, and, moreover, doming of the discs resulting from these forces is directed outwardly of the closure, that is, towards the adjacent opening in the band, which is available to accommodate the doming at least partially.
  • a composite closure for a container prior to fitting to the same which comprises a substantially open-ended, tubular plastics band internally formed with one or more thread or snap-engagement formations for engagement with a complementary formation or formations on the container to attach the closure to the container, and a captive insert disc at least substantially of plastics material which is fitted and retained in the band for overlying and sealing with the mouth-defining rim of the container, the band including abutment means by which, when the closure has been fitted to the container, a marginal region of the disc including the free edge may be deformed downwardly around the container rim, characterised in that:
  • the invention provides a method of assembling the band and the disc in the manufacture of the composite closure defined in the previous paragraph, characterised in that the disc is forced into position within the recess, past the thread or snap-engagement formation(s), by engagement of a pushing means with a central region of the disc, the disc being thereby caused to adopt the said convexly domed condition which is subsequently maintained by engagement with the outer periphery of the recess.
  • the invention further relates to a closure as above when fitted onto a container.
  • a container 10 moulded from PET (polyethylene terephthalate) thermoplastics material has a reduced diameter neck 12 terminating in a rim 14 (Fig.2) which defines and surrounds the container mouth (not referenced).
  • the rim has a generally plane top face 15, and an outer radius 90.
  • the neck is generally cylindrical. At some distance from the rim 14 it is exteriorily formed with an annular transfer ring 16 by which the container may be carried for filling etc. operations. Between the transfer ring and the rim it is additionally formed with an annular snap-engagement bead 18, and a continuous turn (CT) screw thread 20 of which a part is visible in Fig.2.
  • CT continuous turn
  • a composite screw closure 22 is fitted onto the container neck so as to form an hermetic seal with the rim 14.
  • the closure is formed of two components which are separately formed and assembled together after formation.
  • One of the two components is an open-ended tubular plastics band or shell 24 which is injection-moulded from polypropylene.
  • Fig.2 it has a generally cylindrical central portion 26 and, at respective ends of the central portion, a parallel-faced, radially inwardly extending flange portion 28 having an inner free edge 70, and an enlarged-diameter portion 32.
  • the central and flange portions 26, 28 are joined by an arcuate transition portion 30 forming the top corner of the closure as shown.
  • the enlarged-diameter portion 32 is formed with a line of weakening 34 to form a separable ring 40 at the bottom end of the closure.
  • a bead 42 formed around the interior of this ring is capable of engaging beneath the snap-engagement bead 18 of the container so as to sever the ring from the closure in known tamper-evident manner when the closure is removed.
  • the central portion 26 of the plastics band is internally formed with a continuous turn screw-thread 44 capable of making screw threaded engagement with the screw thread 20 of the container as shown. Between the screw thread and the flange porton 28, and at a spacing from each, it is additionally formed with an annular retaining bead 46 which extends continuously around the closure with its crest lying approximately on the same radius as the crests of the screw thread 44.
  • the exterior of the central portion is formed with projecting ribs 48 to assist gripping by the user.
  • the exterior surface 50 of the transition portion is part-circular in cross-section, extending over a subtended angle of 90°. It merges at its ends into the exterior surface 52 of the flange portion and the base exterior surface 54 of the central portion, from which the ribs 48 project.
  • the exterior surface 52 of the flange portion is planar, whereas the surface 54 of the central portion is cylindrical.
  • the interior surface (not referenced) of the transition portion 30 is specially shaped for a purpose to become apparent. At its bottom end it merges with the upper flank 58 of the annular bead 46, in axial alignment with the base interior surface 60 of the central portion 26. From its junction with the bead 46 it follows a part-circular locus over a subtended angle of about 90°, as the outer periphery 56 of an inwardly facing recess 62 which extends around the band 24 with the flank 58 forming its lower side face.
  • the interior surface of the transition portion 30 is frustoconical, and tapers upwardly and inwardly at an angle of approximately 45° to the closure axis XX.
  • This frustoconical portion 64 forms the upper side face of the recess, and merges at its top end with the undersurface (unreferenced) of the flange portion 28.
  • a shallow bulge 66 which projects downwardly and inwardly in a convex manner within the recess 62 and towards the closure interior.
  • the base thickness of the band 24 is generally uniform over the central, transition and flange portions 26, 30 and 28, the thread 44, bead 46 and bulge 66 being each formed by a local thickening of the band wall.
  • the second component of the composite closure 20 is a sealing and closure disc 72 which forms an insert in the band 24 .
  • the disc is circular, and is severed from plastics sheet created by co-extrusion of multiple layers of plastics material through a horizontal and rectilinear die orifice (not shown).
  • the disc is originally planar, but as described below is deformed to the upwardly domed shape shown in Fig.2 when the disc is inserted into the band and the closure is subsequently fitted onto the container 10. The disc then closes the circular opening (not referenced) defined by the free edge 70 of the band.
  • the diameter of the disc 72 is greater than the greatest diameter of the annular recess 62, which occurs at its outer periphery 56.
  • the insertion of the disc in the band is achieved by a cushioned pusher member 74 which engages the disc over a central part of its area, leaving a peripheral margin of the disc free. With the band suitably restrained against movement the disc is forced upwardly past the screw thread 44 and retaining bead 46 of the band until its free edge 76 comes to rest in the recess 62.
  • the closure disc In moving past the thread 44 and bead 46 the closure disc is forced to adopt an upwardly domed condition.
  • the doming will occur primarily in the overhanging margin of the disc outside the pusher member 74, which will accordingly be deformed downwardly in relation to the general plane of the disc as shown.
  • any doming of the disc above the pusher member may be achieved by means of a clamping member (not shown) which engages the disc above the pusher member and is resiliently restrained by suitable means.
  • a clamping member (not shown) which engages the disc above the pusher member and is resiliently restrained by suitable means.
  • doming of the disc above the pusher member is considered to be desirable and is therefore encouraged; in this respect it should be remembered that the opening in the band 24 is available to accommodate any convexity of the disc within the free edge 70 of the band.
  • the disc 72 is not free to flatten fully when the closure has been assembled and the pusher member 74 has been withdrawn.
  • the disc is therefore held in its domed condition by generally radially inward compressive forces imposed on it by the band 24. Residual doming in this sense is beneficial, because it ensures correct deformation of the disc when the closure is later fitted to a container as is now described.
  • the closure disc after assembly to the band 24 is held securely captive within the recess 62 by the bulge 66 and bead 46 on each side and by the interference of its free edge 76 with the outer periphery 56 of the recess.
  • the location and orientation of the disc within the band are therefore held within close tolerance limits, with little or no risk of cocking or random deformation which could impair the seal security of the closure after capping. In this condition the closure is despatched to the packer.
  • Fig.5 shows the use of a punch assembly incorporating a heated punch 74' to form a disc 72 which has a domed configuration even prior to insertion into the band 24. With the assistance of a cutting ring 78 the punch is also used to sever the disc from parent sheet 80.
  • the closure may be applied to a product-filled container 10 by conventional capping equipment, possibly (but not necessarily) at a time when the product is hot, and/or steam exists in the headspace above it.
  • capping equipment possibly (but not necessarily) at a time when the product is hot, and/or steam exists in the headspace above it.
  • a marginal region 82 of the closure disc including its free edge 76 lies radially outside the container rim 14. Before the disc engages the flange portion 28, this region, which is already subject to some downward deformation from the closure assembly operation as described above, comes into engagement with the bulge 66 of the band 22 and is subsequently deformed by the bulge further downwardly to the substantially inclined position shown in Fig.2. During this further downward movement of the marginal region the portion of the disc overlying the container mouth may be subject to doming movement in the upward direction.
  • the bulge can therefore be regarded as an abutment means for the disc. Because of the substantial deformation of the disc which it creates, the marginal region 82 of the disc moves inwardly and downwardly with a substantially frustoconical configuration, and the disc free edge 76 may, as shown, lose contact with the band 22. However, the free edge still lies radially well outside the crest of the bead 46. Applicants prefer that at the end of the capping operation the included cone angle of the generally frustoconical marginal region 82 should be within the range 120° to 60°, preferably about 90°.
  • the closure disc 72 has a multilayer plastics structure. It may have two or more layers, an intermediate one of which, e.g. of EVOH, may be provided for gas and/or moisture barrier enhancement. Only one of its layers is specifically shown in Fig.2. It is the innermost layer 79 of the disc, and is formed of a relatively soft, shape-conforming polymer resin such as a soft grade of polypropylene. Fig.3 additionally shows the disc to have a thin central barrier layer 84 and a thick upper layer 86 which imparts substantial mechanical strength to the disc. Suitable materials for the layers 84, 86 are well known to the skilled man.
  • the marginal region 82 of the closure disc 72 When, during capping, upward relative movement of the marginal region 82 of the closure disc 72 is being impeded by the bulge 66, the marginal region becomes wrapped downwardly around the outer radius 80 of the container rim 14 so that the soft underlayer 79 of the disc in that locality is brought into intimate contact with the container finish and forms a seal with the container.
  • the seal made by the disc at the radius 80 is less susceptible to top-loading variations than would be a seal formed solely with the generally plane top surface of the container rim 14.
  • the transition and flange portions 30, 28 of the closure band 24 are subject to elastic deformation in the outward direction, with the result that a substantial resilient pressure generally normal to the marginal region 82 of the disc 72 is maintained by the band after capping has been completed. Accordingly, and by virtue also of the soft and conforming nature of the layer 79, the seal formed between the disc and the container is hermetic and secure up to the first opening by the user, despite imperfections which may exist in the container finish.
  • the downward inclination of the marginal region 82 enables the closure disc better to resist inward (i.e. downward) doming caused by high levels of partial vacuum within the container which may be generated by products which are hot-filled and/or steam-flow-closed.
  • the free edge 76 of the disc 72 may remain in compressive engagement in the band recess 62 throughout the capping operation. Such an arrangement may be preferred for applications of the invention where high removal torques are unlikely to be encountered.
  • the downward inclination of its marginal region 82 resulting from the deformation which occurs during assembly and capping as described above enhances the ability of the disc to withstand closure removal forces without inversion, so reducing any danger that the band can separate from the disc and leave it behind on the container.
  • a further contribution to satisfactory disc removal is provided by any cold setting of the plastics material of the disc to its deformed state which occurs in the fitted closure in the time which elapses prior to removal. The cold set prevents any substantial relaxation of the disc towards its original plane condition during the limited time when the band is being unscrewed.
  • Fig.4 shows a second embodiment of the invention to be identical to the embodiment described above, except for the transition portion of the plastics band.
  • the modified transition portion and the band of which it forms part are accordingly denoted by the references 30' and 24'.
  • the frustoconical abutment surface 64' of the transition portion 30' of this second embodiment merges smoothly with the generally part-circular outer periphery 56' of the internal recess 62'. Therefore, whilst the transition portion therefore again provides an abutment means by which the marginal portion 82 is abutted and deformed, the degree of deformation which results is somewhat less than the deformation caused by the bulge in the first embodiment, and the closure may therefore be more suited for use with products for which only a liquid seal is required.
  • the invention may be applied to closure/container combinations having multi-start threads rather than the continuous turn screw threads of the embodiments shown.
  • the screw threads 20, 44 of the container and closure are multi-start, and the bottom faces of the recesses 62, 62' are discontinuous and formed by the top ends of the segments of the respective closure screw thread 44.
  • the beads 46 are accordingly omitted.
  • closures of the described embodiments have closure discs made entirely of plastics material, it is contemplated that in some applications of the invention a thin metal layer or layers may be included. In one such arrangement the outer surface of the closure disc is formed for cosmetic purposes by a thin, vacuum-deposited, metal covering.
  • the invention is not limited in application to screw closures as particularly described, but also has application to snap-on closures.
  • the whole of the closure disc whilst it is preferred and advantageous for the whole of the closure disc to be initially plane for assembly to the closure band as described above, within the scope of the invention are closure arrangements and methods of forming them in which the closure disc is initially non-planar.
  • the part of the disc destined to overlie the container mouth may be formed with ribs for strengthening purposes, and/or it may be recessed at a shallow frustoconical step capable of locating the disc centrally in relation to the container by engaging inside the container rim.

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

Claims (14)

  1. Fermeture composite pour récipient avant ajustement sur le récipient, qui comprend une bande de plastique tubulaire (24, 24') globalement à extrémité ouverte, dotée intérieurement d'une ou plusieurs structures de vissage ou d'encliquetage (44) pour engagement avec une structure ou des structures complémentaires (20) sur le récipient afin de fixer la fermeture au récipient, et un disque formant insert (72), retenu prisonnier, au moins substantiellement de matière plastique qui est ajusté et retenu dans la bande pour recouvrir et fermer hermétiquement la bordure (14) définissant l'embouchure du récipient, la bande comprenant un moyen de butée (66) par lequel, lorsque la fermeture a été ajustée sur le récipient, une région de lisière (82) du disque (72) comprenant le bord libre (76) peut être déformée vers le bas autour de la bordure (14) de récipient, caractérisée en ce que :
    a) le disque (72) a son bord libre (76) reçu dans un évidement annulaire donnant vers l'intérieur (62, 62'), adjacent à une structure de rebord s'étendant vers l'intérieur (28) qui forme une ouverture (70) à une extrémité de la bande ; et
    b) le disque (72) est surdimensionné radialement relativement à l'évidement (62, 62') et par engagement du bord libre (76) avec la périphérie externe de l'évidement est maintenu, avant ajustement sur le récipient, dans une condition bombée qui est convexe par rapport à l'extérieur de la fermeture et fait saillie vers l'ouverture (70) de la bande.
  2. Fermeture selon la revendication 1, caractérisée en ce qu'en raison de son bombement, le disque (72) fait saillie dans l'ouverture (70) dans la structure de rebord (28).
  3. Fermeture selon la revendication 1 ou la revendication 2, dans laquelle le disque (72) est plan par nature mais maintenu dans sa condition bombée par engagement avec la périphérie externe de l'évidement (62, 62').
  4. Fermeture selon l'une quelconque des revendications précédentes, caractérisée en ce que le disque (72) présente une composition à couches multiples dont la couche la plus interne dans la fermeture est constituée d'une matière plastique souple.
  5. Fermeture selon l'une quelconque des revendications précédentes, caractérisée en ce que l'évidement (62, 62') est formé entre la structure de rebord (28) et une nervure de retenue s'étendant vers l'intérieur (46) formée autour de la bande (24, 24') adjacente à la ou aux structures de vissage ou d'encliquetage (44) de celle-ci.
  6. Fermeture selon l'une quelconque des revendications précédentes, caractérisée en ce que le moyen de butée (66) est convexe relativement à l'intérieur de la fermeture.
  7. Fermeture selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le moyen de butée (66) est tronconique.
  8. Procédé d'assemblage de la bande (24, 24') et du disque (72) dans la fabrication de la fermeture composite selon l'une quelconque des revendications précédentes, caractérisé en ce que le disque (72) est amené de force en position au sein de l'évidement (62, 62'), au-delà de la ou des structures de vissage ou d'encliquetage (44), par engagement d'un moyen de poussée (74, 74') avec une région centrale du disque, le disque (72) étant ainsi amené à adopter ladite condition bombée convexe qui est ensuite maintenue par engagement avec la périphérie externe de l'évidement.
  9. Fermeture composite selon l'une quelconque des revendications 1 à 7 lorsque ajustée sur un dit récipient, caractérisée en ce que, par son engagement par le moyen de butée (66), la région de lisière (82) du disque (72) est déformée jusqu'à une position généralement tronconique, s'étendant vers le bas.
  10. Combinaison selon la revendication 9, caractérisée en ce que la région de lisière (82) du disque (72) est inclinée vers le bas, sur un angle dans la plage de 30° à 60°.
  11. Combinaison selon la revendication 10, caractérisée en ce que la région de lisière (82) du disque (72) est inclinée vers le bas, sur un angle d'environ 45°.
  12. Combinaison selon l'une quelconque des revendications précédentes 9 à 11, caractérisée en ce que le bord libre (76) du disque (72) a été séparé de la base l'évidement (62, 62') par la déformation provoquée par le moyen de butée (66).
  13. Combinaison selon l'une quelconque des revendications 9 à 11, caractérisée en ce que le bord libre (76) du disque (72) demeure en engagement avec la base de l'évidement (62, 62').
  14. Combinaison selon la revendication 13, caractérisée en ce que la fermeture est une fermeture à vis.
EP97907211A 1996-03-26 1997-03-14 Capuchon de fermeture, son procédé d'assemblage, et récipient équipé de ce capuchon Expired - Lifetime EP0892743B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US62470996A 1996-03-26 1996-03-26
GB9606378 1996-03-26
GBGB9606378.9A GB9606378D0 (en) 1996-03-26 1996-03-26 Composite closures for containers
US624709 1996-03-26
PCT/GB1997/000710 WO1997035779A1 (fr) 1996-03-26 1997-03-14 Bouchon de fermeture composite, procede d'assemblage et procede de fermeture d'un recipient avec ce bouchon

Publications (2)

Publication Number Publication Date
EP0892743A1 EP0892743A1 (fr) 1999-01-27
EP0892743B1 true EP0892743B1 (fr) 2000-08-16

Family

ID=26308994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97907211A Expired - Lifetime EP0892743B1 (fr) 1996-03-26 1997-03-14 Capuchon de fermeture, son procédé d'assemblage, et récipient équipé de ce capuchon

Country Status (11)

Country Link
EP (1) EP0892743B1 (fr)
CN (1) CN1214660A (fr)
AR (1) AR006389A1 (fr)
AT (1) ATE195481T1 (fr)
AU (1) AU1935297A (fr)
BR (1) BR9708253A (fr)
CA (1) CA2249228A1 (fr)
DE (1) DE69702841T2 (fr)
ES (1) ES2149575T3 (fr)
TW (1) TW363933B (fr)
WO (1) WO1997035779A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6371318B1 (en) 1997-12-24 2002-04-16 Owens-Illinois Closure Inc. Plastic closure with compression molded sealing/barrier liner
US6394293B1 (en) 1998-02-13 2002-05-28 Crown Cork & Seal Technologies Corporation Closure having a lenticular lens
WO2002094664A1 (fr) * 2001-05-18 2002-11-28 Stanpac Inc. Couvercles composites inviolables pour recipients alimentaires
AU2002953543A0 (en) * 2002-12-30 2003-01-16 Mckenna, Conor Closure improvements
ES2296481B1 (es) * 2005-11-16 2009-02-01 Compañia De Tapones Irrellenables, S.A Tapon roscado estanco para botellas de vino y metodo de cierre con dicho tapon.
US9850040B2 (en) 2014-03-21 2017-12-26 Emd Millipore Corporation Container and container engaging member suitable for vacuum assisted filtration
WO2017193173A1 (fr) * 2016-05-13 2017-11-16 Terrence Tremayne Ébauche de fermeture
DE102016212598B3 (de) * 2016-07-11 2017-11-16 Thyssenkrupp Ag Verschlusskappen für Gefäße zur Hochdruckbehandlung
CN108237694A (zh) * 2016-12-27 2018-07-03 谢忠民 一种接缝式热成型塑料盖
DE102020202731B3 (de) * 2019-05-17 2020-10-01 Benedikt Schellinger Verschluss zum fluiddichten Verschließen eines mit einem Stoff gefüllten Gefäßes, Behälter mit einem Gefäß und einem Verschluss sowie Verfahren zum Befüllen eines Behälters mit einem Stoff
CN110887765A (zh) * 2019-11-25 2020-03-17 中国船舶重工集团公司第七二五研究所 一种模拟深海环境用电化学渗氢试验电解槽及应用方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
OA02231A (fr) * 1965-05-19 1970-05-05 Cebal Ste Centrale Des Emballa Capsule métallique à vis ou à baionnette à fond articulé pour la fermeture de récipients et procédé pour la fabrication de capsules de ce type.
CH556274A (de) * 1973-03-01 1974-11-29 Obrist Albert & Co Gefaess mit schraubkappe.
EP0527844B1 (fr) * 1990-05-07 1994-08-24 Anchor Hocking Packaging Co. Fermeture composite
FR2722764B1 (fr) * 1994-07-20 1996-10-04 Rical Sa Capsule de bouchage a vis a joint rapporte

Also Published As

Publication number Publication date
CN1214660A (zh) 1999-04-21
TW363933B (en) 1999-07-11
EP0892743A1 (fr) 1999-01-27
ES2149575T3 (es) 2000-11-01
DE69702841T2 (de) 2001-03-15
WO1997035779A1 (fr) 1997-10-02
AU1935297A (en) 1997-10-17
CA2249228A1 (fr) 1997-10-02
DE69702841D1 (de) 2000-09-21
BR9708253A (pt) 1999-08-03
AR006389A1 (es) 1999-08-25
ATE195481T1 (de) 2000-09-15

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