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EP0912413B1 - Robinet en plastique pour contenant a liquide - Google Patents

Robinet en plastique pour contenant a liquide Download PDF

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Publication number
EP0912413B1
EP0912413B1 EP97917987A EP97917987A EP0912413B1 EP 0912413 B1 EP0912413 B1 EP 0912413B1 EP 97917987 A EP97917987 A EP 97917987A EP 97917987 A EP97917987 A EP 97917987A EP 0912413 B1 EP0912413 B1 EP 0912413B1
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EP
European Patent Office
Prior art keywords
plastic
tap
outlet opening
tap according
valve element
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
EP97917987A
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German (de)
English (en)
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EP0912413A1 (fr
Inventor
Arthur Steiger
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Individual
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Individual
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Filing date
Publication date
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Publication of EP0912413A1 publication Critical patent/EP0912413A1/fr
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Publication of EP0912413B1 publication Critical patent/EP0912413B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/04—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer
    • B67D3/043—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer with a closing element having a linear movement, in a direction perpendicular to the seat
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
    • B65D77/062—Flexible containers disposed within polygonal containers formed by folding a carton blank
    • B65D77/065—Spouts, pouring necks or discharging tubes fixed to or integral with the flexible container
    • B65D77/067—Spouts, pouring necks or discharging tubes fixed to or integral with the flexible container combined with a valve, a tap or a piercer

Definitions

  • the invention relates to a plastic tap according to the preamble of claim 1.
  • Containers are increasingly being used as packaging for liquid foods, such as wine, cooking oil, etc., which are composed of a rigid, outer container and a flexible, inner container.
  • the rigid, outer container can for example be cubic or cuboid and consist of corrugated cardboard.
  • the flexible, inner container can be bag-shaped and made of thermally welded plastic film.
  • Such containers are also referred to as "bag-in-boxes".
  • the bag-like inner container has a round opening for the removal of liquid from the container.
  • a substantially hollow cylindrical coupling piece is normally arranged in this opening.
  • the coupling piece is welded liquid-tight and gas-tight with the plastic film of the container. In professional circles, the welding of plastic films is also referred to as thermal sealing.
  • the coupling piece has a thin, wide, laterally projecting flange on one of its end faces.
  • This flange is usually made of soft, low density plastic. Thermosealing takes much less time with a flange made of soft plastic than with a flange made of hard plastic.
  • a thin flange made of soft plastic is very flexible and can consequently largely adapt to the folds and bulges of the filled inner container. This can largely prevent the plastic film of the inner container from tearing on the outer diameter of the flange.
  • a pin or a tap is pressed into this coupling piece.
  • Such a tap essentially has a hollow base body with an inlet and an outlet opening.
  • the flow of the liquid from the inlet opening through the base body to the outlet opening can be regulated by a valve device.
  • Cocks that can be opened and held with one hand are more suitable for "bag-in-boxes".
  • the second hand then remains free to hold the glass or container to be filled. So that no oxygen penetrates before the first use of the container, the opening of the inner container can be closed by a plate or a stopper. The plate or stopper is removed the first time the container is used.
  • Cocks are known which, in addition to the valve device, have a device for piercing the plate or for removing the stopper from the container opening when the container is used for the first time. There are types of cocks in which the axes of the valve device and the piercing device are perpendicular to one another.
  • the valve device normally consists of a valve part, which together with the valve seat forms the actual valve, and a valve stem.
  • the piercing device comprises a piercing part which is divided into a head and a shaft.
  • the head has at least one sharp tip or edge for piercing the plate in the container opening. It can also be designed as a stopper which closes the container opening.
  • the stems of the valve device and the piercing device are operatively connected to one another. This means that when the valve device is actuated, the push-through device is also actuated at the same time, or vice versa.
  • a section of the shaft of the valve device or of the piercing device can be wedge-shaped.
  • cocks are the subject of patent specification EP 0 553 956 (publication date 4.8.1993) and published patent application DE 32 12 232 (publication date 7.10.1982).
  • a deformable body serves to transmit the movement between the stem of the valve device and the stem of the piercing part.
  • the published patent application DE 32 12 232 therefore proposes a tap with a valve device and a closure device for the container opening, in which the valve part and the stopper of the closure device are arranged coaxially one behind the other.
  • an elastic actuation button By actuating an elastic actuation button, the valve part is pushed out of the valve seat. This will open the tap outlet. At the same time, the valve part pushes the stopper forward, which opens the container opening.
  • the elastic control button can be formed as part of the tap body. It acts on the valve part via a valve stem.
  • Subject of the patent GB 1 471 039 is, for example, a tap that has a tubular base body. One end of this body forms the outlet, the other end is closed with an elastic membrane.
  • the membrane can be integrated into the base body. It is also connected to a valve part. This valve part is in the closed position in a valve seat which is formed at the outlet.
  • the membrane can be connected to the valve part, for example, by a stem. When the membrane is pressed inwards, the valve part is pushed out of the seat and the outlet is opened.
  • the inlet opening is located between the valve seat and the membrane in the wall of the tubular base body.
  • a hollow cylindrical part can be formed on the outside of the body, which is bent at its free end and has ribs on its outer surface.
  • This tap consists of two parts. The first part has a hollow cylindrical section. At one end of this hollow cylindrical section, a laterally projecting flange is formed, which is welded to the inner, flexible container. At the same end, the hollow cylindrical section has an inwardly projecting edge, the inner surface of which forms the valve seat. The wall of the hollow cylindrical section is provided with an opening. The second part is divided into a sleeve-like and a tubular section.
  • the sleeve-like section is attached to the hollow cylindrical section of the first part.
  • the tubular section lies both within the sleeve-like section of the second part and inside the hollow cylindrical section of the first part. It serves as a valve element.
  • the sleeve-like section and the tubular section are connected to one another by an elastic, round plastic disk. If you press this plastic disc from the outside, the valve part is lifted out of the valve seat and the valve is opened. If there is no pressure, the plastic disc bends back into its basic shape and pulls the valve part back into the valve seat.
  • the patent EP 0 350 243 (publication date 10.1.1990) proposes a tap which has an essentially hollow cylindrical housing. At the rear end facing the liquid container, the housing has an inlet opening.
  • a tubular valve part is arranged axially displaceably in the interior of the housing.
  • This valve part is provided with an outlet opening in its front end section and with an inlet opening at its rear end.
  • the valve part can be moved from an open position, in which the outlet opening of the valve part is open, to a closed position, in which the outlet opening is closed.
  • the patent specification GB 2 247 882 (publication date March 18, 1992) describes a tap which consists of a fastening piece facing the liquid container, a tap housing and a valve housing which is plugged onto the tap housing.
  • the fastening piece consists of a hollow cylindrical base part, on the inner edge of which a flat flange protrudes laterally.
  • the tap housing is screwed onto the base part of the fastening piece.
  • the cup-shaped valve housing is attached to the tap housing.
  • a conical valve part is formed on the inside of the outer end wall of the valve housing. The outer end of the valve housing is closed by pushing the valve housing in the direction of the fastening piece and thereby pushing the valve part into the open end of the valve housing.
  • a cock of a similar type is the subject of patent specification WO 95/22504 (publication date August 24, 1995).
  • This tap has a housing with an inlet and an outlet opening.
  • a valve part is arranged in the housing. It can be moved along the longitudinal axis of the housing from a first, front position, in which it prevents the flow of the liquid through the taps, to a second, rear position, in which it allows the flow.
  • the valve seat is formed by a section of the housing wall.
  • patent specification EP 0 432 070 (publication date June 12, 1991) proposes a tap which essentially consists of a body for mounting in the outlet opening of the container and a spring-loaded piston for releasing the liquid.
  • the piston acts on an elastic sealing membrane connected to the body.
  • the body encompasses on the one hand the actual cocks, on the other hand an insertion end for attachment in the outlet opening of the container.
  • the insertion end has a groove which interacts with an annular projection of the outlet opening.
  • the body is provided with a laterally protruding bearing ring.
  • the upper part of the piston has excellent handling approaches.
  • the tap is provided with a tear-off control device which contains a ring which locks the piston.
  • the base body of the tap is welded directly to the plastic film.
  • a laterally projecting flange is formed on the base body. Since the base body of the valve has so far been made of relatively hard material, the flange is also hard in this case. This complicates the welding of the flange with the thin, flexible plastic film of the inner container.
  • a hard flange causes the plastic film to tear along the outer edge of the flange. To attach a tap, it must be possible to grasp it at the front with a tool.
  • the coupling piece is made of relatively soft plastic and, accordingly, can also be better welded to the plastic film of the inner container than a hard flange.
  • additional material is required for the production of the coupling piece, which increases the production costs.
  • the tool with which the cocks are inserted into the coupling piece must also be able to be slipped over the front section of the cock.
  • the front tap section must therefore also be narrower than the rear tap section.
  • the handling approaches also determine the overall width of the front tap section.
  • the rear tap section which can be designed, for example, as a laterally projecting bearing ring, must consequently be wider in a tap with handling approaches than in a tap without handling approaches. This also applies to the coupling piece.
  • the cocks and coupling pieces must not be too big be otherwise the material, storage and transport costs are too expensive become.
  • a plastic valve has a in the Base body inserted elastic element that over a shaft with a valve element for the outlet opening connected is.
  • a valve element for the outlet opening is connected to open the outlet opening.
  • the elastic element deformed, whereupon an axial stroke is generated for the shaft.
  • To the Closing the valve returns the elastic element to it original shape back when the radial pressure on the Body stops.
  • the present invention therefore has as its object one Cocks for liquid containers, in particular for "bag-in-boxes", which consists of a flexible, inner container and a rigid, outer container exist to create which is more universal can be used and is constructed more simply and from one smaller amount of plastic exists than the known, related Cocks.
  • the tap has all the important properties of an optimal rooster. Another job is to make the tap as gas-tight and consumer-friendly as possible to design. In addition, the tap should be directly without one Coupling piece welded to the film of the inner container can be.
  • the proposed tap of the first embodiment comprises an elongated, hollow base body 1.
  • this base body 1 has an essentially oval or elliptical cross section (cf. FIGS. 1a to 2c). It consists of a soft, elastic plastic.
  • the front end 2 of the base body 1 facing away from the liquid container is closed and concavely bent outwards (cf. FIGS. 2a to 2d).
  • the rear end face 3 of the base body 1 facing the liquid container is open (cf. FIG. 2e). It forms the inlet opening of the tap.
  • the outlet opening 4 is arranged in a slightly curved section of the base body wall 5, which is located in the drawings below, near the front base body end face 2 (cf.
  • FIGS. 1a, 1b and 2b When the base body is undeformed, it is circular.
  • the outlet opening 4 On the outside of the base body wall 5, the outlet opening 4 is surrounded by a hollow cylindrical sleeve 6.
  • the inside diameter of the sleeve 6 has the same diameter as the outlet opening 4.
  • the valve element 7 is divided into a wide, upper part 20 and a narrow, lower part 21. Both parts 20, 21 have a round cross section.
  • the diameter of the upper part 20 is slightly larger than the inner diameter of the circumferential ring flange 19.
  • the diameter of the lower part 21 corresponds to the inner diameter of the ring flange 19 or is slightly smaller than this. A shoulder is thus formed between the two parts 20, 21, which rests on the ring flange 19 when the cocks are closed.
  • the upper part 20 is cylindrical in a lower section and conical in an upper section.
  • the lower part 20 of the valve element 7 is divided into a lower and an upper section.
  • the upper section 22 is slightly conical, the lower section 23 is strongly conical.
  • the outer end face of the lower part 21 has a smaller diameter than its inner end face.
  • the valve element 7 is connected to the wall 5 of the base body 1 by a rod-shaped shaft 10.
  • the stem 10 protrudes from the center of the inner end face 8 of the valve element 7 at a right angle.
  • valve element 7 It is fastened with that end which faces away from the valve element 7 to the wall 5 of the base body 1 at a point which lies opposite the center of the outlet opening 4 (cf. FIGS. 1a and 1b).
  • the attachment point of the stem 10 is consequently also located in a slightly curved section of the base body wall 5, which is at the top in the drawings.
  • Both the valve element 7 and the stem 10 are made of plastic.
  • the valve element 7 and the stem 10 are preferably manufactured as a coherent piece.
  • the length of the stem 10 is selected such that the valve element 7 is pressed slightly into the valve seat of the outlet opening 4 when the base body 1 is undeformed.
  • the base body wall 5 has, in the section lying at the top in the drawings, a longitudinal rib 11 on the outside which runs parallel to the longitudinal axis 12 of the base body 1.
  • the rear end of the longitudinal rib 11 lies on the rear end face 3 of the base body 1.
  • the front end section of the longitudinal rib 11 lies opposite the center of the outlet opening 4 (cf. FIGS. 1a to 2a, 2c and 2d).
  • the longitudinal rib 11 is provided with a longitudinal groove 13, which is open towards the interior of the base body 1 and preferably has a round cross section. This longitudinal groove 13 extends over the entire length of the longitudinal rib 11.
  • the front end section of the longitudinal groove 13 is undercut (cf. FIGS. 1a and 1b).
  • the shaft 10 serves to fasten the shaft 10.
  • the longitudinal rib 11 and the longitudinal groove 13 extend to the rear end face 3 of the base body 1 so that it can be easily removed from the mold during manufacture by injection molding.
  • the shaft 10 is provided with a spherical or cylindrical thickening 14 at that end which faces away from the valve element 7.
  • a cylindrical thickening 14 In the case of a cylindrical thickening 14, its longitudinal axis runs at right angles to the longitudinal axis of the shaft 10.
  • the diameter of the thickening 14 is slightly larger than the diameter of the longitudinal groove 13.
  • the shaft 10 is pressed together with the valve element 14 from the outside through the outlet opening 4 and then the Thickening 14 pressed into the front end portion of the longitudinal groove 13.
  • the conical shape of the upper section of the upper valve element part 7 facilitates the pushing of the valve element 14 through the outlet opening 4.
  • the elastic base body 1 deforms such that its expansion decreases in the direction of the acting pressure, while its extent is perpendicular to the direction of the acting pressure is increased. This creates a Stroke, which the valve stem 10 from the outlet opening 4 of the Hahnens moves away. The valve element 7 is thereby from his The seat is raised and the outlet opening 4 is opened. If the Pressure on the base body 1 stops, then the elastic returns Base body 1 back to its original shape. The Valve element 7 is in the valve stem 10 again Valve seat pushed in. The lower, strongly conical, lowest Section 23 of the valve element 7 ensures that the Valve element 7 again easily finds outlet opening 4.
  • a flat, laterally projecting flange 16 is formed on the rear end face 3 of the base body 1.
  • This flange 16 is used for direct thermal sealing of the tap and the film of the flexible inner container of the "bag-in-boxes".
  • a circumferential, annular rib 17 can be formed in the vicinity of the rear end face 3 on the outside of the base body wall 5.
  • a circumferential groove is formed between the flange 16 and the rib 17, in which the wall of the rigid outer container of a "bag-in-box" can be hung.
  • the rearmost section of the base body 1 can be designed as a push-in or push-on end, which can be joined together with a coupling piece (not shown).
  • a cap 18 is provided, which can be attached to the cocks from the front (cf. FIGS. 3a to 3d).
  • This cap 18 is preferably of a hollow cylindrical shape, its front end being closed except for a narrow transverse slot 24. It is made of hard plastic. Their inside diameter corresponds to the height of the base body 1 or is slightly smaller than this. Their inside diameter is also greater than the width of the base body 1.
  • the cap 18 is also at least as long as the base body 1. Your front end wall is preferably convex. In the attached state, the cap 18 touches the base body 1 on the longitudinal rib 11 and on the outer end face of the cuff 6. In addition, the rear edge of the cap 18 bears against the annular rib 17.
  • the outer end face of the sleeve 6 is preferably curved in such a way that it lies completely against the cap 18.
  • the cuff wall tapers in the outer area.
  • a type of sealing lip 9 is formed, which fits snugly against the cap 18.
  • a narrow, essentially annular projection 15 is formed on the front of the annular rib 17 (cf. FIGS. 2a to 3e).
  • the outside diameter of this projection 15 corresponds to the inside diameter of the cap 18 on its rear end face or is slightly smaller than this.
  • the projection 15 is interrupted at the point where it crosses the longitudinal rib 11. If the cap 18 is placed on the tap base body 1, then its inner surface rests on the projection 15 (cf. FIG. 3e).
  • the cap 18 fulfills the following functions: If you pull the taps out of the liquid container when opening it, there is a risk that you will push the taps on the side and liquid will flow out of the container unintentionally.
  • the rigid cap 18 now prevents the cock base body 1 from being compressed. It stabilizes the base body 1 in diameter. Furthermore, the soft cock base body 1 is slightly compressed by the cap 18, which rests on the longitudinal rib 11 of the base body 1 and on the sealing lip 9 of the sleeve 6. The slight deformation of the base body 1 caused thereby causes the ring flange 19 to be pressed against the valve element 7 at the outlet opening 4. This results in better tightness between the valve element 7 and the annular flange 19.
  • the tap base body 1 is made of soft plastic, there is also the risk that it will be deformed if forces act on it or if it is exposed to large temperature fluctuations. The risk of deformation is greatest when the tap is not yet attached to the liquid container, ie during storage or transportation.
  • the cap 18 also provides protection against soiling. The cap 18 must be removed to actuate the tap. After that, however, it is advantageously put back on the tap. This can prevent the cock from being contaminated by dust, mold, insects, etc. When putting it on, only a slight pressure should be applied so that the cap 18 can be easily removed again later.
  • the round cross section of the cap 18 on the one hand ensures maximum stability and on the other hand leads to the cap 18 being able to be placed on the base body 1 of the cock in any rotational position.
  • the securing tear-off closure 25 of the proposed tap comprises a comb 26 which is arranged on the front face 2 of the base body 1 (cf. FIGS. 2a to 2d and 3a to 4c).
  • the comb 26 is slightly curved and extends transversely across the front base body end face 2. It is only connected to the base body 1 via a plurality of fine mandrels 27. These thorns 27 have the function of target tear-off points.
  • a flag 28 is formed on a side end face of the comb 26.
  • the comb 26 can be separated from the base body 1 by pulling the laterally outstanding flag 28 forward and thereby tearing apart the fine mandrels 27 one after the other.
  • the comb 26 is divided into a front section 29 and a rear section 30.
  • the front section 29 has the function of a barb, which can hang in the transverse slot 24 on the front face of the cap 18.
  • it has one or more areas which are wider than the rear comb section 30 and thus project beyond the rear comb section 30 on both sides. These laterally outstanding areas act as barbs.
  • a longitudinal rib 31 projects into the transverse slot 24.
  • the space between these longitudinal ribs 31 is at least as large as the width of the rear comb section 30, but it is smaller than the width of the projecting areas of the front comb section 29.
  • the cap 18 can therefore not be removed until the comb 26 has been torn off.
  • the height of the comb 26 is chosen such that the front comb section 29 does not protrude beyond the outer surface of the cap 18. So you choose a submerged solution. This makes it possible to stick a control seal 32 onto the front end face of the cap 18. The control seal 32 is also destroyed when the comb 26 is torn off.
  • the proposed tap of the second type includes an elongated, hollow base body 33.
  • This base body 33 has an essentially oval or elliptical cross section. It is slightly flattened. This means that its width corresponds to approximately 200% of its height (see Fig. 6b).
  • the base body 33 is made of soft, elastic plastic. Its front end 34 facing away from the liquid container is closed. However, its rear end face 35, which faces the liquid container, is open (cf. FIG. 6a). It forms the inlet opening of the tap.
  • a circular opening 36 is located in a slightly curved section of the base body wall 37, which is shown in the drawings below, near the front base body end face 34.
  • a hollow cylindrical sleeve 38 is formed on the outside of the base body wall 37.
  • the lower, open end face of this sleeve 38 forms the outlet opening 39 of the tap.
  • On the inside of the sleeve wall 40 there is an annular recess 41 adjacent to the lower sleeve wall end face.
  • the lateral boundary surface 42 of this recess 41 is preferably inclined with respect to the central longitudinal axis of the sleeve 38.
  • the upper boundary surface 45 and the lateral boundary surface 42 of the recess 41 form the valve seat.
  • the valve element 44 is conical.
  • the valve element 44 is connected to the wall 37 of the base body 33 by a rod-shaped shaft 45.
  • This shaft 45 protrudes at right angles from the center of the upper end face 46 of the valve element 44. It is fastened with that end which faces away from the valve element 44 on the inside of the base body wall 37 at a point which lies opposite the center of the outlet opening 39 (cf. FIGS. 6a and 6b).
  • Both the valve element 44 and the stem 45 are made of plastic.
  • the length of the shaft 45 is selected such that the valve element 44 rests with the edge region of its upper end face 46 when the base body 33 is undeformed against the upper boundary surface 43 of the recess 41.
  • the base body wall 37 has two parallel longitudinal ribs 47 on the inside in the section lying at the top in the drawing. These longitudinal ribs 47 have a crescent-shaped cross section. Their concave sides face each other, so that an undercut longitudinal groove 48 with a sector-shaped cross section is formed between them.
  • the shaft 45 is provided with a spherical or cylindrical thickening 49 at that end which faces away from the valve element 44. In the case of a cylindrical thickening 49, its longitudinal axis is perpendicular to the longitudinal axis of the shaft 45.
  • the diameter of the thickening 49 is slightly larger than the diameter of the longitudinal groove 48.
  • the latter is inserted from the outside through the outlet opening 39, and then its thickening 49 pressed into the front end portion of the longitudinal groove 48.
  • To open the valve press with the thumb of one hand on the top and at the same time with the index finger and the middle finger of the same hand on the underside of the base body 33 of the cock.
  • the elastic base body 33 is deformed such that its expansion in the direction of the acting pressure is reduced. This causes a stroke which pushes the valve stem 45 in the direction of the outlet opening 39 and pushes the valve element 44 out of the valve seat.
  • the outlet opening 39 is consequently opened.
  • the base body 33 can have a longitudinal indentation 50 on its upper side. Furthermore, a longitudinal rib 51 can be integrally formed on its underside, on both sides of the sleeve 38, which give the index finger and the middle finger a better grip.
  • a flat, laterally projecting flange 52 is formed on the rear end face 35 of the base body 33.
  • This flange 52 is welded to the film of the inner container of a "bag-in-box".
  • a circumferential, annular rib 53 can also be formed on the outside of the base body wall 37.
  • a circumferential groove is formed between the flange 52 and the rib 53, in which the wall of the rigid outer container of a "bag-in-box" can be inserted (not shown).
  • the rearmost section of the base body 33 can be designed as an insertion end, which can be inserted into a conventional coupling piece (not shown).
  • the tap body 33 For the production of the tap body 33 by injection molding becomes a tool or shape with a main core and a secondary core used (not shown).
  • the main core serves for shaping the elongated interior section and the rear, open end face 35 of the base body 33, the secondary core for shaping the interior of the sleeve 38 and the Outlet opening 39.
  • the main core is removed from the rear, open body end face 35 and the secondary core the outlet opening 39 pulled out.
  • the shape of the body 33 and the type of construction of the tool enable a problem-free De-molding of the base body 33.
  • the proposed tap is primarily for "bag-in-boxes" intended. Of course, it can also be used for containers made of rigid plastic.
  • the proposed tap shows compared to known tap Liquid container with a flexible, bag-like inner container and a rigid outer container have significant advantages on:
  • the flange 16, 52 which is welded to the plastic film of the inner container, can be molded directly onto it.
  • the proposed tap is therefore suitable for direct welding (sealing) with the plastic film of the inner container without the use of coupling pieces. It also consists of only three or two simple parts and is therefore much simpler than the known cocks. These simple parts are suitable for production with multiple forms. In contrast to the known cocks, the proposed cock also has only a single sealing point. Therefore, it has the better prerequisites for good tightness than the known cocks. Since the proposed tap does not require any tap handling approaches, it can also be made smaller. A smaller amount of plastic is therefore required for its production than for the production of known cocks. In addition, it takes up less space, which has a positive effect on transport and storage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Lift Valve (AREA)
  • Packages (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Laminated Bodies (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Safety Valves (AREA)
  • Taps Or Cocks (AREA)

Claims (18)

  1. Robinet pour récipients à liquides, en particulier en vue de la fermeture d'un récipient interne souple dans un récipient externe rigide, auquel le robinet en matière plastique est raccordé en formant un orifice d'admission, qui est formé dans un corps de base creux (1, 33) du robinet en matière plastique et la paroi (5, 37) du corps de base étant en section transversale pour l'essentiel en forme de barillet, qui peut être déformée par pression radiale en vue de la production d'une butée axiale sur un arbre (10, 45) d'un élément de vanne (7, 44), et qui présente un orifice d'évacuation (4, 39), qui est fermé en position initiale par une pièce de la vanne (20, 43) qui est reliée à l'arbre pouvant être mis sous pression de manière élastique, caractérisé en ce que la paroi en forme de barillet en section transversale (5, 37) du corps de base (1, 33) est élastique de sorte que le corps de base (1, 33) retourne à sa forme originale, quand la pression radiale (1, 33) sur le corps de base cesse.
  2. Robinet en matière plastique selon la revendication 1, caractérisé en ce que l'arbre (10, 45) de l'élément de vanne (7, 44) est réalisé en forme de tige et que l'orifice d'évacuation (4, 39) est relié à l'opposé à la paroi (5, 37) du corps de base (1, 33).
  3. Robinet en matière plastique selon la revendication 2, caractérisé en ce que, sur l'orifice d'évacuation (4, 39), à l'opposé de la face interne de la paroi (5, 37) du corps de base (1, 33), on réalise une rainure longitudinale (13,48), dans laquelle un renforcement (14, 49) de l'arbre (10, 45) de l'élément de vanne (7, 44) peut être inséré.
  4. Robinet en matière plastique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le plan d'action de la pression radiale sur la paroi (5) du corps de base (1) est disposé en gros perpendiculairement à l'axe de l'arbre (10).
  5. Robinet en matière plastique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le plan d'action de la pression radiale sur la paroi (37) du corps de base (33) est disposé en gros co-axialement à l'axe de l'arbre (45).
  6. Robinet en matière plastique selon la revendication 3, caractérisé en ce que le renforcement (14, 19) est réalisé en section transversale sous une forme circulaire et que la rainure longitudinale (13,48) présente une section transversale à contre-dépouille complémentaire.
  7. Robinet en matière plastique selon l'une quelconque des revendications 3 à 6, caractérisé en ce que la rainure longitudinale (13,48) se prolonge, en partant de la face frontale ouverte, tournée vers le récipient à liquides, le long du corps de base (1, 33) formé de manière longitudinale.
  8. Robinet en matière plastique selon la revendication 7, caractérisé en ce que l'élément de vanne (7, 44) est réalisé de manière à pouvoir être enfiché de l'extérieur par l'orifice d'évacuation (4,39) à travers la rainure longitudinale (13, 48).
  9. Robinet en matière plastique selon la revendication 3, caractérisé en ce que la rainure longitudinale (13) est renforcée par une nervure longitudinale (11) formée sur la face externe de la paroi (5) et située à l'opposé de l'orifice d'évacuation (4).
  10. Robinet en matière plastique selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le corps de base (1, 33) présente une nervure périphérique (17, 53), disposée en direction du récipient à liquides avec un épaulement (15).
  11. Robinet en matière plastique selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'élément de vanne (7, 44) est réalisé à la manière d'un cône à sa partie supérieure (20) et/ou à sa partie inférieure (21) sous la forme d'une bride annulaire étanchéifiante (19).
  12. Robinet en matière plastique selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'élément de vanne (7) présente un tronçon conique (23) en vue du guidage et du centrage de l'élément de vanne (7) dans l'orifice d'évacuation (4).
  13. Robinet en matière plastique selon l'une quelconque des revendications 1 à 12, caractérisé en ce que l'on peut enficher sur le corps de base (1, 33) un capuchon cylindrique creux (18) en matière plastique rigide.
  14. Robinet en matière plastique selon l'une quelconque des revendications 1 à 13, caractérisé en ce que l'élément de vanne (7, 44) est réalisé en se prolongeant de manière conique en direction de l'orifice d'évacuation (4, 39).
  15. Robinet en matière plastique selon l'une quelconque des revendications 1 à 14, caractérisé en ce que le corps de base (1, 33) présente une forme externe allongée, en forme de pointe.
  16. Robinet en matière plastique selon l'une quelconque des revendications 1 à 15, caractérisé en ce que l'on arrange sur le corps de base (1, 33) un dispositif de fermeture à arrachement (25).
  17. Robinet en matière plastique selon la revendication 16, caractérisé en ce que le dispositif de fermeture à arrachement (25) est inséré dans une fente transversale (24) du capuchon (18).
  18. Robinet en matière plastique selon la revendication 16 ou 17, caractérisé en ce que l'on appose un cachet des autorités fiscales (32) sur le dispositif de fermeture à arrachement (25).
EP97917987A 1996-06-14 1997-05-15 Robinet en plastique pour contenant a liquide Expired - Lifetime EP0912413B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH01495/96A CH691262A5 (de) 1996-06-14 1996-06-14 Kunststoffhahnen für Flüssigkeitsbehälter.
CH149596 1996-06-14
CH1495/96 1996-06-14
PCT/CH1997/000191 WO1997048614A1 (fr) 1996-06-14 1997-05-15 Robinet en plastique pour contenant a liquide

Publications (2)

Publication Number Publication Date
EP0912413A1 EP0912413A1 (fr) 1999-05-06
EP0912413B1 true EP0912413B1 (fr) 2000-03-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97917987A Expired - Lifetime EP0912413B1 (fr) 1996-06-14 1997-05-15 Robinet en plastique pour contenant a liquide

Country Status (11)

Country Link
US (1) US5785212A (fr)
EP (1) EP0912413B1 (fr)
AT (1) ATE190285T1 (fr)
AU (1) AU718270B2 (fr)
BR (1) BR9709783A (fr)
CA (1) CA2258180A1 (fr)
CH (1) CH691262A5 (fr)
DE (1) DE59701229D1 (fr)
ES (1) ES2146093T3 (fr)
WO (1) WO1997048614A1 (fr)
ZA (1) ZA975121B (fr)

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FR2788326B1 (fr) 1999-01-11 2001-03-23 Rene Erb Robinet de distribution de liquides
US6360208B1 (en) * 1999-02-04 2002-03-19 Intermec Ip Corp. Method and apparatus for automatic tax verification
AT411897B (de) * 2001-10-16 2004-07-26 Goldmann Norbert Dosiereinrichtung für ein sandstreugerät, insbesondere für ein schienenfahrzeug
FR2832702B1 (fr) * 2001-11-26 2004-04-09 Flextainer Robinet de distribution de liquides
JP2004268575A (ja) * 2003-02-19 2004-09-30 Seiko Epson Corp 液体貯留手段及び液体噴射装置
EP1739052A1 (fr) * 2005-06-28 2007-01-03 Maierhöfer Spritzgiesstechnik GmbH Robinet en plastique
DE102005044129A1 (de) * 2005-09-15 2007-03-22 NOWE Streugeräte Goldmann und Bartling GmbH Sandstreueinrichtung bei Schienenfahrzeugen, insbesondere Hochgeschwindigkeitsfahrzeugen
US7770360B2 (en) * 2005-12-05 2010-08-10 Ds Smith Plastics Limited Form fill and seal container
AT503939B1 (de) * 2006-09-26 2008-02-15 Goldmann Norbert Verfahren und einrichtung zur überwachung und aufbereitung des sandvorrates in einem sandbehälter einer sandstreuvorrichtung eines fahrzeuges, insbesondere eines schienenfahrzeuges
US20090320338A1 (en) * 2008-06-25 2009-12-31 Fabienne Marie-Ange David Bottle Back Label Burst
US20130341366A1 (en) * 2012-06-21 2013-12-26 Jason Craig Campbell Discharge device
US10131530B2 (en) 2014-05-23 2018-11-20 David S. Smith America, Inc. Liquid dispenser with valve
US20160304332A1 (en) 2015-04-17 2016-10-20 Ds Smith Plastics Limited Multilayer film used with flexible packaging

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Also Published As

Publication number Publication date
AU718270B2 (en) 2000-04-13
ES2146093T3 (es) 2000-07-16
ATE190285T1 (de) 2000-03-15
WO1997048614A1 (fr) 1997-12-24
ZA975121B (en) 1997-12-31
EP0912413A1 (fr) 1999-05-06
DE59701229D1 (de) 2000-04-13
CH691262A5 (de) 2001-06-15
BR9709783A (pt) 1999-08-10
AU2631097A (en) 1998-01-07
CA2258180A1 (fr) 1997-12-24
US5785212A (en) 1998-07-28

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