EP0586979B1 - Tube mit Dauerverschluss und Betriebsverschluss - Google Patents

Tube mit Dauerverschluss und Betriebsverschluss Download PDF

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Publication number
EP0586979B1
EP0586979B1 EP93113691A EP93113691A EP0586979B1 EP 0586979 B1 EP0586979 B1 EP 0586979B1 EP 93113691 A EP93113691 A EP 93113691A EP 93113691 A EP93113691 A EP 93113691A EP 0586979 B1 EP0586979 B1 EP 0586979B1
Authority
EP
European Patent Office
Prior art keywords
tube
nipple
fact
closure
tube 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
EP93113691A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0586979A1 (de
Inventor
Manfred Lederer
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.)
Lancaster Group AG
Original Assignee
Lancaster Group AG
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 Lancaster Group AG filed Critical Lancaster Group AG
Publication of EP0586979A1 publication Critical patent/EP0586979A1/de
Application granted granted Critical
Publication of EP0586979B1 publication Critical patent/EP0586979B1/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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/44—Closures
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0015—Upper closure of the 41-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0087—Lower closure of the 47-type

Definitions

  • the invention relates to a tube with the features of the preamble of claim 1.
  • the invention relates generally to such tubes which, on the one hand, are provided with a permanent closure in the delivery state, which hermetically seals the tube filling before the tube is put into use, and, on the other hand, are provided with an operational closure which seals adequately for a certain period of use and which opens after opening of the permanent closure until the tube contents are used up at least to some extent reliably seals the tube further.
  • the hermetic permanent seal in the delivery state is particularly important if the contents of the tube contain volatile components or deteriorate under the influence of air, e.g. oxidized, attracting moisture or decomposing.
  • the field of application is therefore very broad and includes, for example, tubes for food as well as for pharmaceutical, cosmetic or technical applications, such as adhesives.
  • the entire actual tube body is made of metal, the permanent closure being made of a metal from the tube body as a membrane closing the tube opening.
  • a screw flap that can be placed on the tube head serves as the operating closure corresponding external thread on the tube head interacts.
  • a mandrel which is formed on the outer end face of the screw cap from its material, is used to open the permanent closure through the membrane.
  • a whole series of other tube constructions are also known with the same objective of providing both a permanent closure and an operating closure without using a membrane as the permanent closure.
  • So metal or plastic tubes with special caps are known, which initially sit tightly as a permanent closure on the tube head. At least one predetermined breaking zone is then formed within the tube body. When a greater torque is exerted on this predetermined breaking zone, the closure is then broken down into a part which now remains functionally useless on the neck of the tube and into another part of the cap which can then be used as an operating closure.
  • a container made of soft plastic is known, for example, from Swiss patent 566 904.
  • the open end face of the cap initially molded onto the container body can, after it has been separated off, be positively attached as a service closure over a neck of the container body, an inner cylindrical extension integrally molded on the service closure engaging in a plug-like manner in the outlet channel in the neck of the container body.
  • plastic tubes which are provided with an injection-molded tear-off closure, e.g. for coffee cream, small hair shampoo packs, etc. After tearing it off, the cap can be loosely put back on the tube head. A sufficiently tight reclosure as with a reliable screw connection or with a tight form fit of a pure plug connection is generally not possible.
  • German patent specification 26 53 993 shows a container which is intended in particular for single use. It consists of a few tenths of a millimeter thick plastic, such as polyethylene or polypropylene, which is easy to compress.
  • a tapered neck of the container runs out with the wall thickness of the container into a flat end face, which can be interpreted as a flat membrane with the container wall thickness.
  • An annular groove is formed in the flat end face as a predetermined breaking point. From the area of the flat end face surrounded by the annular groove, a pin-like nipple extends axially into a central recess of a closure cap made of the same material as the container neck, which tightly encloses the container neck.
  • the container and the closure cap are combined to form an integral component by producing a firm press fit of the nipple in the recess in the closure cap. If a torque is exerted on this by turning the closure cap, the nipple at the predetermined breaking zone is broken out or torn out from the end face of the container neck, so that an outlet opening is created in the end face of the container neck for emptying the container. If multiple uses of the container are also considered, the Membrane-like end of the container neck as a permanent closure.
  • the operating cap is the closure cap which can be plugged onto the container neck again after the container has been opened, together with the nipple remaining on it, which then, when the container is reclosed, engages as a stopper in the outlet opening of the container similarly to the container of the Swiss patent 566 904.
  • this outlet opening unlike the container of the Swiss patent specification 566 904, was previously broken open or torn open, the outlet opening has a tendency to an irregular circumferential contour even with careful manufacture, so that when the nipple is reinserted into the broken or torn outlet opening when the container is reclosed to a push-on inhibition or jamming and finally to rotation disturbances of screw-on operating locks.
  • EP-A-355 0471 discloses a tube for holding pasty masses, the cylindrical tube neck of which is provided with an external thread on which a closure cap is screwed.
  • the outlet opening in the tube neck is closed by a disk-like plate on which an outwardly projecting mandrel is formed and the underside of which is provided with a collar which engages behind in a form-fitting manner, which ensures anchoring in the outlet opening.
  • a circular predetermined breaking notch is formed in the area between the mandrel and the outlet opening.
  • the permanent closure thus formed is formed in two parts, the plate with the mandrel and the collar being made of an easily breakable, brittle plastic and the actual tube body made of a soft plastic.
  • This two-part form and the use of different plastics is extremely negative for economical production. Characterized in that the edge of the socket sealingly rests on the disk-shaped plate and due to the existing space between the mandrel and the inside of the cap, there is a risk that the predetermined breaking notch of the plate can tear prematurely if the cap is accidentally overtightened, thereby creating a permanent hermetic seal Tube is challenged before opening.
  • a tube made of plastic material with a protective cap is known, the permanent closure of which is made in one piece.
  • the permanent closure consists of a conical neck, which ends in a circular web, and of a membrane closing the opening of the neck, on which an outwardly projecting pin-shaped neck extension is formed. A predetermined breaking point is formed between this neck extension and the web.
  • the web is at least as high as the height of the cervical process, ie the cervical process is sunk in the trough formed by the web, so that it is practically impossible to break open the cervical process with the fingers, which is desired.
  • a short piece of pipe is formed in the top of the protective cap, with which torsion and possibly also axial pressure can be exerted on the neck process, so that the neck process is sheared off.
  • the disadvantage of this solution is that the top of the protective cap is provided with two openings, which on the one hand promotes the deposition of dust or tube contents and on the other hand is rejected by buyers not only for practical but also for aesthetic reasons due to the lack of a continuously closed protective cap surface becomes.
  • the invention has for its object to provide an at least partially made of plastic tube with permanent closure and operating closure, which has opening means for opening the permanent closure, but which are not visible when the operating cap is on, and which is not only a convenient and reliable opening of the permanent closure enables, but in which the reclosure with the operating lock can also take place without interference and in particular no obstruction of a rotary movement of the operating lock is to be feared.
  • a plastic membrane from which a nipple is formed is also used as the permanent closure.
  • the nipple protrudes over the mouth of the tube head as an easily graspable handle, possibly after removing the operating closure.
  • the dimensioning should be such that the user can comfortably grip the nipple-shaped handle and, together with it, the membrane largely can tear out the opening on the tube mouth, so that a controlled and relatively clean tube mouth is created in a reliable manner.
  • the nipple together with the attached parts of the membrane then represents waste.
  • the nipple In the container which is closed again with the operating seal, the nipple can therefore no longer lead to inhibitions and other faults. However, if necessary, it is not ruled out that the non-circular design of the loose engagement of the nipple in the cutout of the operating closure causes the permanent closure to be opened by introducing torque onto the attached operating closure and, via this, onto the nipple. While the tube is in the delivery state, the nipple-shaped handle is invisibly hidden in a corresponding recess in the operating closure, as in the known container, when it is placed on the tube head together with the tube. This does not exclude the fact that the operational closure is also to be delivered separately next to the tube body, for example for packaging reasons, and the user is left to put it on. The waste when tearing off the membrane together with the nipple is only slight.
  • Such a plastic tube looks optically and aesthetically like a "normal" tube if a conventional operating closure, such as in particular a screw-on cap or a push-on cap, is used.
  • a conventional operating closure such as in particular a screw-on cap or a push-on cap.
  • the original device for opening the permanent closure only comes to light after the operational closure has been removed for the first time.
  • the membrane is torn out by means of the nipple, the consumer then receives the very usual type of tube without any recognizable earlier permanent closure.
  • This tube can then be opened and closed several times in the usual manner by means of the operating closure. Both in the delivery state with the operating cap on and later in use in the operationally closed state, the tube looks the same and the same conventional.
  • the permanent closure according to the invention can also be obtained simply and inexpensively.
  • a sprayable plastic in particular at least the nipple, the membrane and the region of the tube head adjoining this, preferably the entire tube body with the exception of the operating closure, can be a single injection molding.
  • the person skilled in the art is free to choose the material from which the operating closure is selected.
  • This can of course also be made of a plastic material, e.g. that of the tube body or the membrane and the nipple, exist without this being absolutely necessary. Metal could even be used for the closure.
  • the plastic material of the diaphragm and nipple up to the limit of the entire tube body is expediently a thermoplastic, without basically wanting to rule out cases of thermoset plastic.
  • the nipple is expediently designed to be axially symmetrical. In general, it will be placed from the center of the membrane. With the dimensions according to claim 6, the tube opening is spanned to a large extent by the nipple and only to a small extent by the membrane, so that the tear line is thereby already moved to the edge of the tube opening.
  • a predetermined breaking zone is then formed between the tube head and the nipple within the remaining actual membrane, this can be set so that not only is it easier to tear out the membrane, but the tube opening after removal of the permanent closure is clean, edge-free and with a precisely predetermined opening cross-section remains.
  • the membrane By moving the membrane inwards relative to the rim of the mouth of the tube head, an extension of the lever length of the nipple is obtained from the outset, this extension having no influence on the recess in the operating closure receiving the nipple.
  • the mouth of the tube head is then expediently rounded. In terms of spray technology and optics, it is expedient if the rounding of the mouth edge merges into the recessed membrane with a constant curvature.
  • the nipples can be used not only as a handle or lever with indefinite power support, but even as a rocker arm that is located on the mouth of the tube opening at any point on the side Pressure can be applied by the user and then initiates the tearing of the membrane at the opposite point.
  • the user could also be given a direction of tipping and a special initial tear-off zone based on the tipping effect could be formed at the opposite point.
  • you will become the user of such special instructions leave unloaded, since with a suitable lever ratio of the rocker arm, e.g. with a small lever between the support and the tear-open point, but with a long lever on the handle part, tear forces can be generated that are already so strong that with a normal membrane, especially with a membrane provided with a predetermined breaking zone Tear open enough.
  • the outer surface of the nipple is preferably provided with a grip boot which facilitates handling by the user.
  • a cylindrical design of the body of the nipple is most conveniently adapted to a round opening cross section of the tube mouth, in order to prevent the nipple protruding from the mouth of the tube head while the permanent closure is still fitted, excessively pressing or injuring the hand of the user or otherwise causing damage, is expedient the free end face of the nipple is curved outwards.
  • the invention can also be applied to tubes with viscous contents, for example, which is expedient while the tube is parked in the area the tube mouth is to be collected.
  • Fig. 1 shows a tube as it appears unchanged both in the delivery state and in operation.
  • a screw cap is screwed onto this tube head 6 as the operating closure 8.
  • the cylindrical peripheral surface of the operating closure 8 is flush with the essentially cylindrical peripheral surface of the filled tube body 2.
  • the tube end opposite the tube head is hermetically sealed in a conventional manner in the area of a closure zone 10, which e.g. by squeezing, welding or the like. can be won.
  • the material of the entire tube body 2 including its tube head and expediently also the operating closure consists of a sprayable plastic, for which a thermoplastic plastic is generally suitable for tubes.
  • the tube head 6 has a cylinder 12, which axially continues the shoulder 4 on the tube body 2, the outer jacket surface of which is provided with an external screw thread onto which the operating closure 8 can be screwed.
  • the cylinder 12 in turn merges via a tapered, here conical, transition piece 16 into a cylindrical mouth 18 of the tube on the tube head 6.
  • the mouth edge 20 of the mouth 18 is rounded.
  • the mouth 18 is set back at least around the curvature region of the mouth of the mouth edge 20, the mouth 18 of which is covered by a membrane 22, which is made integrally with the mouth 18 and expediently with the entire tube body 2 together with the tube head 6 as an injection molded part.
  • a nipple 24 which extends outward from the membrane with its wall thickness, or also somewhat smaller or somewhat larger wall thickness, than the cylindrical hollow body 26 which is open to the interior of the tube.
  • the hollow body 26 of the nipple 24 has its predominant length outside the mouth edge 20 and ends on its free end face 28 in a curved configuration. Both the curved end face 18 and the outer lateral surface of the hollow body 26 are provided with a gripping 30 or a corresponding roughening of the grip, ribbing of the grip or the like. Mistake.
  • the nipple 24, the membrane 22, the mouth 18 and the entire tube head 6 are axially symmetrical.
  • the membrane 22 together with the hollow nipple 24 forms a permanent closure 32 which hermetically seals the tube contents from the atmosphere.
  • the nipple 24 takes up the largest diameter range of the free opening cross section of the mouth 18 and is connected to its inner wall surface only via a narrow annular membrane edge. In the embodiment shown, this ends at a right angle in the inner wall surface of the mouth 18, but can also merge into the rounding of the mouth edge 20 with a constant curvature.
  • a suitable circumferential weakening zone can still be impressed in the desired manner, preferably in the immediate or very close vicinity of the inner wall surface of the Mouth 18
  • the operating closure 8 is a screw cap with a cylindrical cap jacket 34 and cap end wall 36 instead of a possible form-fitting push-on cap.
  • a screw thread 38 is formed as an internal thread, which cooperates with the screw thread 14 on the tube head 6 and then when the Operating closure 8 is placed on the tube head 6 with this cooperates sealingly.
  • the inward beveled edge 40 of the cap shell 34 can, if necessary, but need not, cooperate with the shoulder 4 on the tube body 2 as an end stop device. It is often sufficient to turn the screw thread to the end stop yourself.
  • the screw cap-shaped operating closure 8 has such an axial height that it projects beyond the end face 28 of the nipple 24 with the end wall 36 of the cap.
  • a cylindrical skirt 42 extends inward from the cap end wall 36, which surrounds the nipple 24 as protection against bending and still projects around the cylindrical outer surface of the mouth 18. It is also possible to create a positive engagement path between the inner surface of the skirt 42 and the outer surface of the mouth 18, if necessary.
  • the end of the apron 42 can also be struck on the transition piece 16 as required.
  • the permanent closure 32 is opened by the user by pulling or better tilting (see FIG. 6) the nipple 24, the membrane being torn open or completely torn away. In the limit case, the tilting can take place with lever-shaped support on the mouth edge 20 on the tube head 6.
  • the permanent closure is torn open, there remains a practically edge-free and residue-free tear-open zone 44 (cf. FIG. 7), which no longer affects the open cross section of the tube mouth at all, or at most only slightly.
  • the described design of the permanent closure which is present in the delivery state, not only represents a good hermetic seal of the tube contents before use, which is easy to remove when the device is used, but also has excellent optical recognition features in the sense of an original closure, which ensures the integrity from a distance the tube signals when the operating cap is removed. Otherwise the tube has no unusual optical handling or usage features for the average user.
  • the outer end face of the operating closure 8 can also be designed in a manner known per se as a contact surface 44 in order to be able to store the tube upside down if necessary and thus to prevent the tube from flowing To force the tube contents towards the tube opening during this standard of the tube.
  • the plane shown can be selected in the end face shape, which merges via a rounded portion or chamfer 46 into the outer lateral surface of the operating closure 8, which is flush with the outer lateral surface of the actual tube body 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Closures For Containers (AREA)
  • Tubes (AREA)
  • Closing Of Containers (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP93113691A 1992-09-07 1993-08-26 Tube mit Dauerverschluss und Betriebsverschluss Expired - Lifetime EP0586979B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9212026U 1992-09-07
DE9212026U DE9212026U1 (de) 1992-09-07 1992-09-07 Tube mit Dauerverschluß und Betriebsverschluß

Publications (2)

Publication Number Publication Date
EP0586979A1 EP0586979A1 (de) 1994-03-16
EP0586979B1 true EP0586979B1 (de) 1997-05-02

Family

ID=6883495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93113691A Expired - Lifetime EP0586979B1 (de) 1992-09-07 1993-08-26 Tube mit Dauerverschluss und Betriebsverschluss

Country Status (7)

Country Link
EP (1) EP0586979B1 (el)
AT (1) ATE152415T1 (el)
CA (1) CA2105640A1 (el)
DE (2) DE9212026U1 (el)
DK (1) DK0586979T3 (el)
ES (1) ES2109405T3 (el)
GR (1) GR3024335T3 (el)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3617732B2 (ja) * 1996-07-10 2005-02-09 大和製罐株式会社 レトルト殺菌可能な容器
DE19704625C2 (de) 1997-02-07 2001-04-19 Dental Kosmetik Gmbh Dresden Drehklemmverschluß für Behälter
DE29902258U1 (de) * 1999-02-09 1999-07-15 Linhardt GmbH & Co. KG, 94234 Viechtach Tube sowie Verschlußnippel für eine solche Tube
FR2817241B1 (fr) * 2000-11-30 2003-03-07 Cebal Tube aluminium avec embout secable

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1327190A (en) * 1917-03-15 1920-01-06 Bigoney Thomas Warnock Container and process for making the same
DE7732972U1 (de) * 1977-10-26 1978-02-09 Teroson Gmbh Pipette
DE8301345U1 (de) * 1983-01-20 1983-07-28 Cebal Verpackungen Tube fuer empfindliche Fuellgueter
DE8504383U1 (de) * 1985-02-16 1985-03-28 Bayer Ag, 5090 Leverkusen Tubenfoermiger Behaelter
AT398954B (de) * 1988-08-18 1995-02-27 Greiter Ag Tube

Also Published As

Publication number Publication date
EP0586979A1 (de) 1994-03-16
CA2105640A1 (en) 1994-03-08
ES2109405T3 (es) 1998-01-16
ATE152415T1 (de) 1997-05-15
DE59306323D1 (de) 1997-06-05
DK0586979T3 (da) 1997-09-29
GR3024335T3 (en) 1997-10-31
DE9212026U1 (de) 1992-12-17

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