WO1998038102A1 - Soupape a fermeture automatique, procede de fabrication et reservoir dote d'une telle soupape - Google Patents

Soupape a fermeture automatique, procede de fabrication et reservoir dote d'une telle soupape Download PDF

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Publication number
WO1998038102A1
WO1998038102A1 PCT/EP1998/001075 EP9801075W WO9838102A1 WO 1998038102 A1 WO1998038102 A1 WO 1998038102A1 EP 9801075 W EP9801075 W EP 9801075W WO 9838102 A1 WO9838102 A1 WO 9838102A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
self
closing valve
valve according
wall
Prior art date
Application number
PCT/EP1998/001075
Other languages
German (de)
English (en)
Inventor
Bernd Hackmann
Horst Schorner
Original Assignee
Weener Plastik Gmbh & Co. Kg
Kunststoffwerk Kutterer Gmbh & 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8036454&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1998038102(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Weener Plastik Gmbh & Co. Kg, Kunststoffwerk Kutterer Gmbh & Co. Kg filed Critical Weener Plastik Gmbh & Co. Kg
Priority to DE59806624T priority Critical patent/DE59806624D1/de
Priority to EP98912395A priority patent/EP0963323B1/fr
Priority to AU67251/98A priority patent/AU6725198A/en
Priority to AT98912395T priority patent/ATE229458T1/de
Publication of WO1998038102A1 publication Critical patent/WO1998038102A1/fr

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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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2031—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure the element being formed by a slit, narrow opening or constrictable spout, the size of the outlet passage being able to be varied by increasing or decreasing the pressure

Definitions

  • Self-closing valve method for its production and container with this self-closing valve
  • the present application relates to a self-closing valve for dispensing flowable media from a container and a method for its production.
  • liquids include e.g. B. cleaning and care products for the human body such as liquid soaps, shower gels, shampoos, skin oils and. v. a. m.
  • Another group of such products is food and beverages, for example ketchup, mustard, honey and the like. the like
  • a third group of such products are consumer fluids, such as technical oils, etc.
  • EP-A-0 545 678 proposes a closure cap with a self-closing closure, in which a curved membrane is used, which is connected to a mounting edge via a connecting wall.
  • the connecting wall is arranged between the membrane and the mounting edge in such a way that it rolls off to open the membrane and exerts an opening force on the membrane which is intended to cause the membrane to open.
  • the present invention has for its object to provide a self-closing valve that both excellent opening and
  • Another aspect of the object of the invention is to provide a method for producing such a valve. This object is achieved by the subject matter of claim 1.
  • the method according to the invention is the subject of claim 26.
  • the solution according to the invention creates a self-closing valve which on the one hand opens reliably when pressure is applied to the container in the deployed position, but which on the other hand closes reliably and tightly.
  • a curved membrane is provided, the curvature of which faces the interior of the container in the closed position. If the container is in the overhead division, i.e. H. with the valve pointing downwards, an overpressure is created in the container, and the membrane is arched outwards, whereby slits in the membrane open and allow the liquid to pass through.
  • the membrane and the slots are matched to one another in such a way that elastic deformation forces build up in the membrane when the membrane is deformed, which forces the valve to close when the pressure is released.
  • the transition area between the connecting wall and the membrane in such a way that forces or moments are transmitted from the connecting wall to the membrane, which support the opening and closing.
  • the membrane and the connecting wall are preferably designed to be rotationally symmetrical.
  • the holding section is also preferably designed to be rotationally symmetrical.
  • the membrane is preferably such that it has an approximately spherical shape in the rest position.
  • spherical section is only intended as an indication of the basic design and is not intended to contain an exact geometric definition of the shape of the membrane.
  • the slit in the membrane is of particular importance.
  • slits can be provided, each of which extends outward from the axis of rotation, i. H. extend to the connecting wall.
  • a slot is provided which then extends in the radial direction over the axis of rotation.
  • the membrane particularly preferably has three slots.
  • these slots are arranged in such a way that they extend radially outward from the axis of rotation.
  • the angular spacing of the slots is preferably the same and is 120 °.
  • a slot with three, four or five slots divides the membrane into a corresponding number of tapered ones Rag. After the deformation and opening, these flaps have to be returned in such a way that their cutting limits lie exactly against one another. A slight disorientation of the tabs leads to the tabs lying one above the other, particularly in the area of their tips, which prevents the tabs from making sealing contact.
  • the particularly preferred construction with three slots is based on the knowledge that such a flap, if it comprises an angular cutout of 120 °, is much better protected against lateral displacements and disorientations than a flap which only comprises 90 degrees or less.
  • This web of material acts or these webs of material act like elastic tension springs within the elastic membrane and pull the slot together when it is closed again.
  • this design creates a closure which, despite the low opening forces, has high closing forces and reliably guides the closure tabs to bear against their respective side edges.
  • the invention proposes several different designs for the formation of the connecting wall between the membrane and the holding section.
  • the connecting wall with a rotationally symmetrical structure is designed such that an essentially S-shaped course of the wall in the rest position results in a central section containing the axis of rotation.
  • this wall is then stretched and the membrane opens as soon as the wall has reached the fully stretched state. This results in a retraction and retraction of the valve from a closure cap surrounding the valve.
  • connecting wall it is also possible to design the connecting wall according to a second embodiment, as described in the cited EP-A-0 545 678.
  • a connecting wall is provided, in which there is a rolling edge when the valve is extended from the closure cap, the rolling edge moving towards the membrane.
  • a design with three slots is particularly indicated here.
  • the connecting wall is essentially rigid.
  • stiff is to be understood here to mean that the connecting wall does not essentially produce any material during the transition of the valve from the closed position to the open position Is subject to deformation. In a preferred embodiment, this is achieved in that the connecting wall between the mounting section and the membrane runs essentially rectilinear in cross section.
  • Such a design can be achieved, for example, by designing the connecting wall to be cylindrical with a rotationally symmetrical membrane.
  • the connecting wall can be made with a thicker wall, which results in a very stable support of the membrane with respect to a closure cap.
  • the term "stiff" is therefore not to be understood in the sense that it would preclude a thinner wall thickness or a deformability of the partition, but the term is only to be understood in the sense that a possible deformation of the partition for the process of Opening and closing has no significant influence.
  • the membrane and connecting wall are decoupled in terms of torque, i. H. that the movement of the membrane is influenced as little as possible by forces and in particular moments that could be transmitted from the connecting wall to the membrane.
  • a hinge-like connection between the connecting wall and the membrane can be manufactured in different ways.
  • a thin point which is arranged in the connection area between the connection wall and the membrane and which rotates around the membrane in the case of a rotationally symmetrical membrane design is particularly preferred. This thin point is preferably in the transverse cut s-shaped, designed to increase the hinge effect.
  • the transition area between the connecting wall and membrane in this preferred fourth embodiment is designed in such a way that in particular no moments are transmitted from the connecting wall to the membrane.
  • this transition area can also be created in that the material in this area is inhomogeneous, that is, for. B. another material is used in this area or the properties of the material are influenced in a suitable manner so that the desired reduction in the ability to transmit torque is achieved.
  • the valve according to the invention can be produced from all materials which have suitable values for the elastic deformation and the elastic restoring force.
  • the membrane and / or the connecting wall from a silicone material. It is also possible to manufacture the membrane and / or connecting wall from a thermoplastic elastomer.
  • the connecting wall, the holding section and the membrane preferably consist of the same material and form a valve body.
  • the holding section of the self-closing valve is particularly preferably reinforced by a plastic device, in the case of a rotationally symmetrical design of the valve, a plastic ring which, in comparison to the material of the connecting wall and the membrane, is made from a stiffer and possibly also less expensive plastic material.
  • the intermediate wall, holding section and membrane are injected in a spraying process in an inverted state, i. H. in a state in which the connecting wall is offset by 180 ° to its original position in relation to the holding section.
  • the valve is then turned upside down and inserted in a cap in the upturned state.
  • a reinforcing ring made of a harder plastic is injected onto the holding section at the same time. It is preferred to produce the plastic ring in a previous manufacturing process independently of the self-closing valve and to provide a plurality of openings in this reinforcement ring, into which the material of the valve can penetrate during the injection molding process, so that an intimate, durable and also inexpensive connection between the reinforcement ring and valve body is created.
  • fluid liquids
  • medium medium or flowable medium
  • flowable medium used in the present description are to be understood to mean all substances whose viscosity, regardless of whether this viscosity is determined as dynamic or as kinematic viscosity Outflow of the substance from a container, possibly made possible by an additional pressurization. So there are not only substances included in these terms that flow by themselves, such as. B. watery substances, but also substances that only flow when they are pressurized, such as. B. greasy and pasty substances.
  • the closure is used for food, and here for food that come from a group that includes the following foods:
  • Vegetable and fruit juices and other beverages condiments of all kinds, such as soy sauce and the like, viscous condiments such as mustard, ketchup, mayonnaise, viscous foods, such as honey, jellies, jams, milk products such as milk, condensed milk, cream and the like.
  • valve in the packaging of body care and cleaning agents, such as liquid or pasty soap, shower gels, skin oils, sunscreens, shampoos, hair colorants, skin creams, deodorants etc.
  • body care and cleaning agents such as liquid or pasty soap, shower gels, skin oils, sunscreens, shampoos, hair colorants, skin creams, deodorants etc.
  • valve is also preferred for other cleaning and care agents, such as dishwashing detergents, universal cleaning agents, shoe creams, polishing agents, stain removing agents, liquid detergents and the like.
  • Figure 1 shows a section through the closure of a container in the overhead division, wherein a first embodiment of a self-closing valve according to the invention is arranged in the closure.
  • FIG. 2 shows a bottom view of the exemplary embodiment according to FIG. 1;
  • Fig. 3 shows the embodiment of Figure 1 in the open state.
  • FIG. 4 shows a top view of the illustration according to FIG. 3;
  • FIG. 5 shows an exemplary embodiment of a valve similar to FIGS. 1-4 with a slightly different valve shape in a sectional view;
  • FIG. 6 is a plan view of a detail from FIG. 5, showing the reinforcement ring
  • FIG. 7 shows a detail of the representation according to FIG. 5;
  • FIG. 8 shows a sectional illustration of a further exemplary embodiment of the invention.
  • the closure shown in Fig. 1 is designated V in its entirety.
  • the closure is screwed onto a neck 1 of a container 2 provided with a conventional thread.
  • this container represented by reference number 3, is the fluid or medium symbolically designated by reference number 4, the viscosity of which is selected such that it can flow out of a closure of the type in question here.
  • the container wall is fully permanently or partially made of flexible material that can be compressed by the user.
  • the neck 1 of the container 2 is cylindrical, the container can have a different shape.
  • a cylindrical closure cap 31 is screwed onto the neck 1 and has a cylindrical part 32 which is provided with an internal thread that matches the external thread of the neck 1.
  • closure cap does not necessarily have to be screwed onto the container neck.
  • Other constructions are also conceivable, e.g. B. a cap, which is held by projections on the neck of the container, and pressed on the container neck or on the container itself, clipped or otherwise secured by friction, gluing or the like.
  • a central opening 6 is provided in this closure cap 31, through which the medium 4 can flow.
  • the medium 4 is prevented from this flow by the self-closing valve, designated overall by 5, according to the present invention.
  • the valve 5 has a membrane 7 which is curved in the manner of a spherical segment inwards, towards the interior 3 of the container and towards the medium 4 when the valve, as shown in FIG. 1, is in the closed position.
  • the connecting wall 8 adjoins the membrane 7 and is connected to the holding section 10 via a curved region 9.
  • this holding section 10 is supported by two cylindrical webs 11 which are attached to the essentially circular cover area 12 of the closure 31. are formed.
  • the valve body consists of a membrane, connecting wall and holding section and is formed in one piece.
  • the lid 12 is designed so that the container can be stored upside down on the lid and thus on the closure.
  • This type of storage or the corresponding technical design that allows this type of storage, has the advantage that the space above the membrane is always filled with liquid, so that the removal process, even with viscous media, is not dependent on the fact that initially the liquid must flow into the valve.
  • the membrane 7, as will be explained later, is not designed with a uniform wall thickness, but the wall thickness decreases towards the center.
  • the connecting wall 8 itself is kept significantly thinner than the membrane.
  • the connecting wall consists of part a, which lies directly against the membrane, and part b, which is connected to region a via the arcuate region 9. As indicated in FIG. 1, there is an angle of approximately 45 ° between the areas a and b in the closed position.
  • annular bead 13 is formed in one piece with the connecting wall and projects radially outward therefrom.
  • annular bead When the valve is open, as can be seen in FIG. 3, the annular bead lies against a shoulder 14 of an annular bead 15 which projects inwards from the closure cap cover and which is designed to be essentially rotationally symmetrical. »M
  • the shoulder 14 is designed such that its bevel corresponds directly to the angle of the annular bead 13 in the open position.
  • the annular bead 15 widens conically away from the container interior 3 and thus forms a guide which guides the intermediate wall region a when the valve is opened. It also has the effect that the connecting wall is supported in the closed position in the front area of the membrane and therefore cannot move with respect to the closure cap. This measure has the advantage that movements of the self-closing valve, which can lead to inadvertent opening of the membrane, are avoided.
  • a hinged lid can be provided which the membrane, for. B. holds with a hemispherical attachment in the position shown in Fig. 1 and serves as a backup during transport.
  • the membrane 7 is slotted, as will now be discussed further with reference to FIGS. 2 to 4.
  • valve and the membrane are designed to be rotationally symmetrical overall, the axis of rotation in FIG. 1 corresponding to line A-A.
  • the membrane has a total of three slots which start from the point at which the axis of rotation pierces the membrane, this point bearing the reference symbol 18.
  • the three slots are also arranged symmetrically and form an angle of 120 ° to each other.
  • the length of the Slits in relation to the membrane result from the illustration according to FIG. 1, then a slot occupies approximately a range between 3/5 and 4/5 of the membrane radius.
  • the slots themselves are cut with a knife tool, the cut preferably being carried out in the position of the valve, as shown in FIG. 1.
  • the slots then extend in a plane that runs perpendicular to the cap cover 12 and includes the axis of symmetry AA.
  • Each opening slot 16 has the same overall length, which in the illustration according to FIG. 2 is composed of the line lengths x + y + z.
  • each slot consists of an inner section II, which is preferably more than half of the total slot length, to which an unslit material bridge 19 connects. After that, the slot continues in section I.
  • the first section II has the slot length x, the material bridge the slot length y and the adjoining slot the length z.
  • the material bridge 19 and thus the length y is preferably somewhat smaller than the length I.
  • This design of the slot has considerable advantages for opening and closing the slots.
  • the material bridge 19 is subjected to essentially only a uniaxial tension in a direction perpendicular to the respective slot.
  • the material bridge 19 thus acts like a simple tension spring, which cannot generate any displacement forces of the slots against one another, but rather acts like a rubber band which is stretched when the tabs are opened and which has the tendency to rest the tabs due to the restoring force move back together.
  • the slot section I lying after the material bridge 19 reinforces this tendency since it keeps tensions in a direction that are not perpendicular to the slot plane away from the material bridge 19. This ensures that essentially only forces perpendicular to the slot plane are effective within the material bridge 19.
  • the material then begins to flow out of the opening O, the flow process continuing as long as an overpressure in the container is created by the compression by the user.
  • the version looks so that the slots are interrupted with the dimensions z, y, x.
  • the dimensions vary over the entire diameter of the sealing blanket 7.
  • the opening slots 16 are not interrupted, but only of different lengths, that is to say the dimension z + y + x varies in the entire diameter of the membrane 7.
  • the design of the slots has a significant impact on the ability of the membrane to open and close.
  • the use of three slots has the particular advantage that the slots can be self-centering against each other.
  • the use of material bridges or webs has the advantage that elastic restoring forces can be built up via a uniaxial stress state.
  • the length of the slots and the width of these material bridges as well as the number of material bridges (two or more material bridges can also be provided per slot .. l 3 can be varied to adapt the opening and closing behavior to different media.
  • all slots can be made with the same length. This is preferred in the case of a rotationally symmetrical design of the valve membrane and a rotationally symmetrical arrangement of the center of a star-shaped slit with three, four, five or more slits.
  • the length of the individual slots can also be designed differently, so that the slot itself is not rotationally symmetrical. It is also possible to arrange the slots in a rotationally symmetrical membrane so that the common point of all slots on the membrane does not coincide with the axis of rotation thereof. It is also possible to provide a star-shaped design with the same or different slot length in a design with three, four, five or more slots, in which the angle between the individual slots is not the same. With four slots, the slots can e.g. B. be designed so that they enclose an angle of> 90 ° to the one adjacent slot, an angle of ⁇ 90 ° to the other adjacent slot.
  • FIGS. 1-4 show a further embodiment of the closing valve according to the invention.
  • This closing valve can be inserted into a closure cap in a similar manner as is the case with the closing valve according to FIGS. 1-4.
  • the closing valve has some deviations from the closing valve according to FIGS. 1-4, which are explained in detail below.
  • valve 5 shows the valve in the state in which it is injected. After the spraying process, the valve is turned inside out, namely by moving the membrane 40 upwards along the axis of symmetry A-A in the illustration according to FIG. 5.
  • the intermediate wall 42 is designed similarly to the intermediate wall 8, but there is a significant difference with regard to the membrane 40 and the transition region 43 between the membrane 40 and the connecting wall 42.
  • connecting wall 40 has a circumferential groove 44, which results in an arcuate region when being turned upward.
  • the design of the area b of the connecting wall and the shoulder 45 is similar to that of the connecting wall 8 and the shoulder 13 shown there and therefore does not need to be discussed again here.
  • the slitting of the membrane 40 need not be shown either, since it corresponds exactly to the slitting, as was explained for the membrane 7 with reference to FIGS. 2 and 4.
  • connection wall 42 has, as can be seen in particular from the illustration according to FIG. 7, an envelope region 50 in which the connection wall is folded inwards in an arc shape.
  • the wall thickness in the part of the envelope area which is closer to the axis of rotation A-A is thinner than the wall thickness of the connecting wall and is approximately half to two thirds of the wall thickness of this connecting wall below the envelope area 50.
  • the envelope region 50 which is curved inwards, is followed by a first arch region 51 (in the uninverted state) which is curved outwards, to which an inwards, ie. H. oppositely curved arc region 52 connects.
  • the wall thickness of this second arch area 52 is significantly higher than the wall thickness of the connecting wall and is approximately 50 to 100% higher than its thickness.
  • the wall thickness of the membrane 40, which directly adjoins the second arch region 52, is approximately three to seven times, preferably approximately five times the wall thickness of the connecting wall, this wall thickness, like all other wall thicknesses of the membrane, in each case parallel to the axis of rotation AA are measured.
  • the diameter ratio of the overall valve to the diameter of the membrane is approximately 4: 3.
  • the arch region 52 is coupled directly to the membrane. It is essential that the arch region 52 does not adjoin the wall of the membrane symmetrically, but is offset in relation to the holding section of the membrane in the non-inverted state.
  • the membrane extends from the arch region 52 via a cylindrical wall 60 away from the holding section in the non-inverted state or in the installed state from the interior of the container.
  • a second wall section 61 which is not cylindrical but conical (the membrane is rotationally symmetrical), extends in the opposite direction from the wall 60, ie towards the container when the valve is installed.
  • the length of the conical wall 61 measured parallel to the axis of rotation is approximately 50% longer than the length of the cylindrical see wall 60.
  • the length of the cylindrical wall 60 is approximately equal to the length of the arc section 52 at the junction with the membrane, measured parallel to the axis of rotation, and the length of the conical wall 61 is then between approximately 30% and approximately 70% preferably 50% longer.
  • the membrane At the end of the cylindrical wall 60, which is designated 60a, the membrane has a relatively sharp edge and then extends from this in a parabolic arc 64 to the axis of rotation.
  • the membrane extends with a section 65 which is only slightly curved, i. H. has a large radius of curvature, the side edge forming an angle between 20 ° and 30 °, preferably approximately 25 °, in section with a plane that is perpendicular to the axis of rotation A-A.
  • the wall section with a large radius of curvature 65 merges into a circular area 66, which is designed perpendicular to the axis of rotation, in a diameter range that is smaller than half the membrane diameter but larger than a quarter of the membrane diameter.
  • Membrane diameter is to be understood here as the largest membrane diameter, that is the distance between two opposite edges 60a.
  • the wall thickness of the membrane increases with increasing distance from the axis of rotation.
  • the wall thickness of the membrane at the point of intersection of the axis of rotation is approximately 25% to 75% larger than the wall thickness of the connecting wall below the membrane, preferably approximately 50% larger.
  • a circular peripheral edge is formed, which is provided with the designation 65a, the wall thickness of the membrane is preferably between 25% and 75% higher than the wall thickness in the center, particularly preferably about 50% higher.
  • the wall thickness of the membrane is preferably approximately 3-4 times the wall thickness at the point of intersection of the axis of rotation, particularly preferably approximately 3.5 times.
  • the membrane is preferably made of a silicone material, but other plastic materials such as thermoplastic elastomers, etc. can also be used.
  • a membrane made of a silicone material with a slit has particularly good properties with regard to opening and closing.
  • a membrane designed in this way opens easily and with a relatively large opening diameter, the state of opening can be maintained with a slight overpressure and closes reliably and tightly as soon as the overpressure is eliminated, residues of the medium which are in the region of the opening when the closure is closed again be sucked back into the container.
  • a further special feature of the design according to FIG. 5 is the additional retaining ring 70.
  • this retaining ring has a plurality of perforations 71 arranged in the circumferential direction, which can be seen in cross section, as can be seen in particular from FIG. 5 extend downwards, ie pointing away from the contact area with the holding section 72 of the valve shown in FIG.
  • the retaining ring 70 consists of a harder, less elastic plastic material than the material of the actual valve, from which the connecting wall and membrane are made.
  • valve according to FIGS. 5, 6 and 7 is manufactured as follows:
  • the retaining ring 70 is injection molded from the corresponding plastic material in a separate operation.
  • the retaining ring is then inserted into the injection mold of the valve body and, in the exemplary embodiment, silicone material is injected into the injection mold.
  • the silicone material penetrates into the openings 71.
  • the silicone material is then annealed at suitable temperatures for a longer period of time.
  • valve body After completion of the valve body, the valve is turned inside out by moving the membrane upwards in the illustration according to FIG.
  • the shoulder 13 then lies against the connecting wall in area a, as is shown in a corresponding manner for the valve shown there in FIG. 1.
  • the valve is then slotted as shown in Figure 2.
  • valve is then inserted into a closure cap as shown in FIG. 1, the webs 11 being designed such that they receive the retaining ring 70 in a corresponding manner.
  • FIG. 8 shows a self-closing valve 80, which consists of a holding section 81, a connecting wall 82 and a membrane 83.
  • the membrane 83 and the transition area 84 to the side wall 80 are designed in exactly the same way as was explained above with reference to FIGS. 5 to 7 for the membrane 40 and the transition area 43.
  • the connecting wall is not moved during the dispensing process.
  • the connecting wall is therefore designed so that it essentially absorbs only the tensile forces which are exerted by the membrane on the connecting wall when the membrane is actuated.
  • the connecting wall 82 is designed with a wall thickness that is approximately as thick or somewhat thicker than the greatest wall thickness of the membrane. This wall thickness leads to a relatively rigid connecting wall.
  • the wall thickness shown in FIG. 8 is not absolutely necessary. It is possible, in particular (but not only) if a corresponding guide is provided in the closure cap, to choose a significantly smaller wall thickness for the connecting wall 82.
  • the holding section 81 is also made with a much greater wall thickness than the holding section in the other exemplary embodiments of the self-closing valve. Here too it is possible to reduce the wall thickness considerably to make. However, the higher wall thickness in the area of the connecting wall 82 and the holding section 81 has significant advantages for the strength of the valve.
  • a retaining ring 85 made of a harder plastic is also provided here, the design of which corresponds to that of the retaining ring 70 according to FIGS. 5-7.
  • the valve is manufactured in the same way as was explained above for the exemplary embodiment according to FIGS. 5-7.
  • the valve is made of a silicone material in the inverted state and is then placed in the state in which it is shown in Figure 8.
  • Plastic material with suitable elastic properties and corresponding restoring force can be used, such as. B. a thermoplastic elastomer.

Abstract

L'invention porte sur une soupape à fermeture automatique (5) pour la distribution d'éléments fluides hors d'un réservoir (2), présentant une membrane bombée (7), dont le bombement, en position de fermeture, est tourné vers l'élément fluide (4) et, quand la pression monte à l'intérieur du réservoir (2), dans le sens opposé au fluide. La soupape comprend aussi une section de support (10) pour la maintenir contre le réservoir (2), ainsi qu'une cloison de connexion (8) entre la membrane (7) et la section de support (10). Dans la membrane (7) est prévu un assemblage à affourchement conçu de telle manière que dans celle-ci (7) se constituent, lors de sa déformation sous l'effet de la pression à l'intérieur du réservoir (2), des forces de rappel de la position de fermeture à la position de distribution, en sorte que, en cas de décharge de la pression, ladite membrane (7) passe à nouveau de la position de distribution à la position de fermeture. Cet assemblage à affourchement présente de préférence trois, quatre ou cinq fentes (16), voire plus, si possible en forme d'étoile. Il est préférable qu'au moins l'une de ces fentes soit occultée de manière à former une passerelle matérielle (19), la longueur de cette occultation étant inférieure à la longueur totale de la fente concernée (16).
PCT/EP1998/001075 1997-02-25 1998-02-25 Soupape a fermeture automatique, procede de fabrication et reservoir dote d'une telle soupape WO1998038102A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59806624T DE59806624D1 (de) 1997-02-25 1998-02-25 Selbstschliessendes ventil und behälter mit diesem selbstschliessenden ventil
EP98912395A EP0963323B1 (fr) 1997-02-25 1998-02-25 Soupape a fermeture automatique et reservoir dote d'une telle soupape
AU67251/98A AU6725198A (en) 1997-02-25 1998-02-25 Self-closing valve, method of manufacture, and container fitted with such self-closing valve
AT98912395T ATE229458T1 (de) 1997-02-25 1998-02-25 Selbstschliessendes ventil und behälter mit diesem selbstschliessenden ventil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29703275.5 1997-02-25
DE29703275U DE29703275U1 (de) 1997-02-25 1997-02-25 Verschlußmembran

Publications (1)

Publication Number Publication Date
WO1998038102A1 true WO1998038102A1 (fr) 1998-09-03

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ID=8036454

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Application Number Title Priority Date Filing Date
PCT/EP1998/001075 WO1998038102A1 (fr) 1997-02-25 1998-02-25 Soupape a fermeture automatique, procede de fabrication et reservoir dote d'une telle soupape

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EP (2) EP0963323B1 (fr)
AT (2) ATE229458T1 (fr)
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DE (3) DE29703275U1 (fr)
ES (2) ES2189147T3 (fr)
WO (1) WO1998038102A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001008994A1 (fr) * 1999-07-29 2001-02-08 Weener Plastic Gmbh & Co. Kg Soupape a fermeture automatique
WO2003091124A2 (fr) * 2002-04-25 2003-11-06 Alpla-Werke Alwin Lehner Gmbh & Co. Kg Valve a fermeture automatique
WO2004026721A3 (fr) * 2002-09-16 2004-10-07 Alpla Werke Robinet a membrane a fermeture automatique

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29913319U1 (de) * 1999-07-29 2000-12-07 Weener Plastik Gmbh Co Kg Selbstschließendes Ventil
GB0121377D0 (en) † 2001-09-04 2001-10-24 Aqualisa Products Ltd Shower handset
DE102005012706B4 (de) * 2005-03-11 2006-11-23 Hansa Metallwerke Ag Duschkopf
NL1038867C2 (en) * 2011-06-09 2012-12-11 Bokhoven Markus Theodorus Johannes Fanciskus Van OOZING FREE CAULKING AND GLUEING GUN BASED ON VACUUM.

Citations (8)

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EP0160336A2 (fr) * 1984-04-27 1985-11-06 The Procter & Gamble Company Récipient souple muni d'une valve auto-refermable pour assurer une fermeture automatique et empêcher les fuites lors d'un rangement en position inversée
US4749108A (en) * 1986-12-19 1988-06-07 The Procter & Gamble Company Bimodal storage and dispensing package including self-sealing dispensing valve to provide automatic shut-off and leak-resistant inverted storage
EP0495440A2 (fr) * 1991-01-14 1992-07-22 AptarGroup, Inc. Bouchon-verseur avec soupape commandée par pression
EP0545678A2 (fr) * 1991-12-06 1993-06-09 Liquid Molding Systems, Inc. Valve de distribution pour emballages
EP0555623A1 (fr) * 1992-02-14 1993-08-18 The Procter & Gamble Company Système comportant un récipient muni d'une valve à fente faisant office de valve de ventilation et un liquide contenu dans ce récipient
EP0586778A1 (fr) * 1992-09-10 1994-03-16 The Procter & Gamble Company Système vertical contenant un liquide avec valve de fermeture automatique
DE29508151U1 (de) * 1995-05-17 1995-08-17 Georg Menshen Gmbh & Co Kg Schlitzventil zum Verschließen von Behältern
WO1995034500A1 (fr) * 1994-06-10 1995-12-21 Aptargroup Inc. Systeme de valve dans une piece rapportee pour fermeture de distribution

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160336A2 (fr) * 1984-04-27 1985-11-06 The Procter & Gamble Company Récipient souple muni d'une valve auto-refermable pour assurer une fermeture automatique et empêcher les fuites lors d'un rangement en position inversée
US4749108A (en) * 1986-12-19 1988-06-07 The Procter & Gamble Company Bimodal storage and dispensing package including self-sealing dispensing valve to provide automatic shut-off and leak-resistant inverted storage
EP0495440A2 (fr) * 1991-01-14 1992-07-22 AptarGroup, Inc. Bouchon-verseur avec soupape commandée par pression
EP0545678A2 (fr) * 1991-12-06 1993-06-09 Liquid Molding Systems, Inc. Valve de distribution pour emballages
EP0555623A1 (fr) * 1992-02-14 1993-08-18 The Procter & Gamble Company Système comportant un récipient muni d'une valve à fente faisant office de valve de ventilation et un liquide contenu dans ce récipient
EP0586778A1 (fr) * 1992-09-10 1994-03-16 The Procter & Gamble Company Système vertical contenant un liquide avec valve de fermeture automatique
WO1995034500A1 (fr) * 1994-06-10 1995-12-21 Aptargroup Inc. Systeme de valve dans une piece rapportee pour fermeture de distribution
DE29508151U1 (de) * 1995-05-17 1995-08-17 Georg Menshen Gmbh & Co Kg Schlitzventil zum Verschließen von Behältern

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001008994A1 (fr) * 1999-07-29 2001-02-08 Weener Plastic Gmbh & Co. Kg Soupape a fermeture automatique
WO2003091124A2 (fr) * 2002-04-25 2003-11-06 Alpla-Werke Alwin Lehner Gmbh & Co. Kg Valve a fermeture automatique
WO2003091124A3 (fr) * 2002-04-25 2004-02-05 Alpla Werke Valve a fermeture automatique
WO2004026721A3 (fr) * 2002-09-16 2004-10-07 Alpla Werke Robinet a membrane a fermeture automatique

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ATE256604T1 (de) 2004-01-15
DE59806624D1 (de) 2003-01-23
EP0963323B1 (fr) 2002-12-11
ES2212956T3 (es) 2004-08-16
ATE229458T1 (de) 2002-12-15
EP1078863B1 (fr) 2003-12-17
EP0963323A1 (fr) 1999-12-15
ES2189147T3 (es) 2003-07-01
DE29703275U1 (de) 1998-06-25
DE59810488D1 (de) 2004-01-29
EP1078863A1 (fr) 2001-02-28
AU6725198A (en) 1998-09-18

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