KR900000494B1 - Nestable self-venting spout - Google Patents

Abstract

A moulded plastics spout (1) in extended position has an enlarged flexible lower wall joined to a relatively rigid and externally threaded upper wall. A peripheral sealing channel is disposed about the base of the lower wall position for securing to a container wall opening neck (10) by means of an overlaying metal crimping ring (2). A tear out diaphragm is recessed within the spout upper wall and provided with an integrally moulded ring pull for removal. A circumferentially enlarged plastics enclosing cap (3) engages the spout upper wall and the metal crimping ring in nested position to close off the annular spout void against contamination. A cup-shaped pouring vent (4) is included in the spout to facilitate smooth pouring.

Description

Overlapping Automatic Vent Spouts

1 is a partial cross-sectional front view of an overlapping spout having an automatic vent according to the present invention.

2 is an exploded perspective view of the spout stopper and the ventilator attached separately thereto.

3 is a cross-sectional view showing the discharge position protruding after engaging the spout assembly with the holes in the vessel wall.

3A is an enlarged fragmentary cross-sectional view of the spout vessel wall engaging portion shown in FIG.

4 is a top plan view of the ventilator.

* Explanation of symbols for main parts of the drawings

1: spout 2: crimping ring

3: cap 4: automatic ventilation

10: spout neck 12: sealing film

13: tearing part

The present invention relates to an auto-vented spout in which the liquid is discharged little by little without being discharged at once by coupling the automatic vent device to the spout for dispensing liquid. In general, one type of discharge spout used in a container used in industry is composed of a folding spout having a flexible wall so that the spout is lifted from a closed containment state, that is, a folded state to a completely protruding discharge position. have. This conventional spout incorporates an automatic venting device for automatically venting the inside and the outside of the container, thereby eliminating the need for installing an expensive venting device on the head of the container. In general, such a ventilator is formed by an elongated tubular member and flanges outwardly along its lower circumference. When the spout is in the nested position, ie the containment position, the upper portion of the vent member is attached within the spout, and a major portion of the vent device extends in the vessel in the axial direction beyond the spout. When the flexible spout is lifted to its discharge position, the vent member displaces in the axial direction, with the vent flange approaching the spout bottom and adjoining and forming an air inlet path therebetween.

The ventilation device according to the known technology has a structural defect that must be solved, although the intended ventilation technology is properly performed. The most important drawback is that, due to the introduction of the tubular ventilator according to the known art, the entire folding or nested closure has to be extended over the axial direction. For example, to reduce shipping costs, package makers typically form a head with a separate enclosure and superimpose the package bodies so that they overlap each other. With automatic ventilation, the longitudinal contour of the closure is 2 Since it is doubled, it is virtually impossible to overlap a closure. In fact, even the transport of the closure as described above is expensive because the volume is significantly increased by the automatic ventilation according to the known art.

Another drawback is that during manufacture, the tubular member for ventilation must be securely attached inside the spout. It is usually manufactured in a heat seal operation, which is expensive and must be very strong and uniform in order not to fall off during transportation and handling. In addition, when the airtight closure is attached to the filled package, there is a greater possibility that the aeration device is separated from the spout by the mechanical sloshing action of the fluid. Chemical erosion by the filled fluid may also place a large stress on the heat seal coupling water between the spout and the vent.

It is an object of the present invention to provide a flexible discharge spout assembly for dispensing liquids from a container.

A fundamental drawback of the magnetically ventilated spout according to the above and other well-known techniques is that according to the present invention, the shape of the flexible wall from the compact folding position to the projecting discharge position where the ventilation member overlaps the spout overlaps with the spout. It is solved by providing an improved soluble wall discharge spout in the form of running by switching. The spout has a sealing channel, which is firmly attached to the package opening neck by a metal crimping ring. The vent member superimposed with the spout has a circumferential rib, by which the vent member is mechanically fixed to the sealing channel under the wearing of the crimping ring. The vent member is configured to allow air to flow in from the periphery thereof and to allow liquid to flow through the center when the spout is at its protruding discharge position. By using a simple automatic venting device that almost coincides with the spout in the form of a superimposed form and that the overall vertical contour is not so large, a controlled flow of liquid can be obtained as described above. In addition, since the automatic ventilation device is mechanically attached to the container opening by a metal crimping ring, the ventilation device is not damaged and there is no fear that the ventilation device will be detached even in a later use state. The spout also has a hand peelable sealing film that seals the opening and a resealing cap for resealing the opening when the sealing film is removed.

Therefore, the main object of the present invention is to provide a novel and improved stackable discharge spout employing a magnetic ventilator to facilitate the control of the discharge.

It is another object of the present invention to provide a compact ventilator of simple construction that is used in combination with a stackable exhaust spout.

Another object of the present invention is to provide a folding spout which can be prepared in full use without the help of a hand.

Referring to the accompanying drawings with respect to the present invention will be described as follows.

In general, the automatic vent spout assembly according to the present invention is composed of a plastic spout (1), a metal crimping ring (2), a plastic overcap (3), and an automatic vent (4) in an overlapping form.

In more detail, the spout 1 in a containment position, ie in an overlaid position, has a sealing channel circumferentially conducted at its base, which channel has a short outer wall 6 and an upper wall 7 and an elongated inner wall. It consists of (8). A relatively flexible outer wall 9 extends from the lower end of the channel inner wall 8 to the lower end of the relatively rigid upright spout neck 10. The spout neck 10 has a spiral outer thread 11. Immediately above the screw, the spout neck 10 is closed by a sealing film 12 surrounded by the tear portion 13. Directly above the sealing film 12, a pull ring 14 which can be held by a finger is horizontally installed, and the pull ring 14 is circumferentially formed around the sealing film adjacent to the tear portion 13 by a connecting neck 15. Are integrally coupled to the The vertical gap between the pull ring and the sealing film is smaller than the thickness of the vertical cross section of the pull ring.

The metal crimping ring 2 has an inverse cross-sectional shape, and is composed of an elongated main wall 16 ending at the lower end wound inward, and a short inner wall 18 ending at the upper wall 17 and the lowermost inner curl. The crimping ring 2 intersects over the spout sealing channel and seals the channel inwardly.

The resealable overhaul cap 3 has a circumferentially enlarged upper wall 19 surrounded by a pair of hinged lifting bales 20, which bail 20 overlaps the metal ring 4 in its original containment position. Lose. The cylindrical skirt 21 hangs down from the upper periphery of the ring inner wall 18, which is engaged under the lower collar of the ring inner wall 18. From the top of the cap, the threaded cylindrical side wall 22 is laid down, and the inner thread engages with the outer thread 11 of the spout neck 10. Complete screwing and subsequent remilling ball are performed by seating the top end of the spout neck in the annular groove 23 formed inside the side wall and opened downward. By assembling the spout 1, the crimping ring 2 and the cap 3 as described above, transportation and storage can be effectively performed, and a compact closure assembly can be obtained.

A cup-shaped automatic vent 4 generally forms part of the assembly, which includes an annular bottom wall 24 and an upstanding outer sidewall 25 ending at the circumferential leaf 26. . A series of air inlets 27 are formed in the annular region near the upper end of the side wall 25. At the upper end of the side wall 25, a short cylindrical band 28 is formed between the leaf 26 and the air inlet 27. The central portion of the bottom wall 24 of the ventilator is open, whereby a liquid outlet passage surrounded by an upright inner wall 29 is formed, and a small outlet 30 is formed in the bottom wall 24.

In operating the above closure assembly to the automatic ventilator, the annular pocket is inserted into the ventilator 4 and formed by the side wall 25 of the ventilator and the inner wall 29 for the fluid outlet passageway. It is sufficient to simply insert the spout neck 10 and the flexible outer wall 9 into the. The inner and outer walls of the ventilator are tapered upward to facilitate assembly. The vent and spout are compressed together such that a cylindrical band 28 at the top of the side wall 25 of the vent tightly surrounds the inner wall 8 of the spout sealing channel. When the leaf 26 of the ventilator contacts the upper surface of the upper wall 7 of the sealing channel, the cylindrical band 28 and the inner wall 8 of the ventilator are firmly frictionally engaged. When the assembly operation is completed, the upper end of the inner wall 29 of the ventilator surrounding the fluid discharge path is placed directly below the sealing film 12 of the spout. Therefore, as shown in FIG. 1, the completed automatic ventilation spout assembly according to the present invention becomes a compact unit, and does not require a joining and assembly work that causes a cost increase. The overall contour of this assembly is almost unchanged, resulting in cheaper and easier handling, packaging and storage.

The method of using the automatic aeration spout assembly is shown in FIG. 3, wherein the leaf 26 of the aeration device is intimately connected between the opening neck 31 and the upper wall 7 of the sealing channel when the sealing channel of the spout is positioned at the opening of the container. Is compressed. As a result, the ventilator is inseparable mechanically. This arrangement is highly desirable in countering the damaging forces generated by the sloshing action of the contained liquid. In addition, the bad phenomenon that the synthetic plastic parts are expanded by the hydrocarbons normally contained in the container so far does not occur.

To prepare the closure for use with the spout, the catch handle 20 in the overcap 3 is used to pull out the flexible inner wall 9 and reverse the arrangement for upright discharge. The container is then ready to be discharged by removing the overcap 3 and tearing off the membrane with a readily accessible pull ring 14. The liquid quickly discharged through the fluid outlet passage inner wall 29 of the ventilator is instantaneously displaced as the atmospheric air moves along the upper inner surface of the spout and passes through the air inlet 27. By leaving the gap membrane for the pull ring 14 and arranging the sealing membrane 12 as close to the spout opening as possible, it is possible to maximize the protrusion of the inner wall 29 for the fluid outlet passageway. Therefore, when the inner wall 29 reaches at least the horizontal plane of the air inlet 27, sufficient separation of the outflow liquid and the inlet air is performed to achieve satisfactory aeration.

Therefore, the use of the automatic vented spout according to the present invention makes it possible to easily and quickly discharge the fluid without generating the uncontrollable pulsating surging characteristic of the airtight container. In addition, the spout assembly of the present invention is simple and the manufacturing cost is reduced, the packaging and handling conditions are always constant because the overall contour is substantially constant even when the automatic ventilator is attached. Since the height is especially low, it is advantageous at the time of loading.

What has been said so far is only an example for explaining the present invention, and various modifications and changes may be made without departing from the spirit of the present invention.

Claims (8)

An integrally molded plastic stackable discharge spout (1) having a circumferential direction at one end thereof and having an annular sealing channel consisting of an outer wall (6), an upper wall (7) and an inner wall (8); A relatively flexible outer wall 9 extending downward from the sealing channel, coupled to the lowermost end of the outer wall and superimposed on the outer wall when the spout is in a stowed position, and also ending at a free end of the uppermost end Spout neck 10 and a cap coupling means 11 formed on the inner wall of the closure, a sealing film 12 for closing the inner wall, and an annular metal which is placed over the sealing channel and fixes the spout to the container. In a stackable spout consisting of a crimping ring (2) and an integrally molded plastic cap (3) engaged with the spout (1), an anti-pulsation automatic vent device (4) is provided A superimposed spout having a superimposed shape, characterized in that it is positioned under the outer wall and has a contour substantially coincident with the contour of the spout neck (10) in a superimposed position. 2. The pulsation preventing vent device (4) according to claim 1, wherein the pulsation preventing vent device (4) is made of a thin walled plastic cup-shaped member having an upright sidewall (26) and a bottom wall (24), and the upper side of the sidewall (25) is circumferentially. And a series of air inlets (27) arranged at the ends of the closure coupling means, the fluid outlet passage inner wall (29) is formed in the bottom wall (24) characterized in that the nested automatic vent spout. 3. The automatic ventilation spout according to claim 2, wherein the cover coupling device includes a cylindrical band (28) on the side wall (25). 4. Automatic vent spout according to claim 2 or 3, characterized in that the coupling means on the pulsation resistant automatic vent device (4) comprises a leaf (26) extending circumferentially. 5. The automatic ventilation spout according to claim 4, wherein a leaf (26) extending circumferentially on the pulsation preventing automatic ventilation device (4) is positioned in contact with the annular sealing channel of the spout. The automatic vent spout according to claim 2, characterized in that it comprises an inner wall (29) for the fluid outlet passage in which the flow path of the pulsation preventing automatic ventilator (4) stands upright. 7. The automatic ventilation spout according to claim 6, wherein the flow path of the pulsation preventing automatic ventilation device (4) extends upward to at least the horizontal plane of the air inlet (27). 2. The assembly according to claim 1, wherein the assembly is fitted to a container wall with an opening surrounded by an opening neck (31), and the crimping ring (2) connects the spout (1) and the automatic vent device (4) to the container wall. Automatic vent spout, characterized in that fixed to the opening neck (331).

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