JP3805516B2 - Two-component extrusion container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a two-component extrusion container.
[0002]
[Problems to be solved by the invention]
An extrusion container comprising an outer tube containing one content liquid and an inner tube containing another content liquid, the two-part extrusion being configured to press the body of the container and discharge the two liquids Containers are conventionally known.
In the case of the conventional extrusion container, there is a problem that at the beginning of extrusion, only the content liquid in the inner tube or the content liquid in the outer tube is discharged, or the mixing ratio is offset and the ejection is not stable. .
Therefore, especially when it is desired to discharge a small amount of the content liquid, a required amount of the content liquid cannot be discharged at a predetermined mixing ratio.
[0003]
The present invention has a technical problem of stabilizing the discharge at the beginning of discharge so that both liquids are discharged at a predetermined mixing ratio at the beginning of the discharge at the time of extrusion. An object is to provide an extrusion container.
[0004]
[Means for Solving the Problems]
In order to achieve the above technical problem, the present invention is a two-component extrusion container having an outer tube and an inner tube as a two-component extrusion container. Covers the liquid flow path formed by the outer periphery of the inner tube and the opening of the outer tube, and forms a flap that is divided by a slit in the center, and opens and closes the orifice by opening and closing the flap based on changes in internal pressure in the container. The structure characterized by having attached the slit valve formed through the attachment member is employ | adopted.
[0005]
As a specific embodiment, the outer tube has a mouth part composed of a top wall having an opening and a side cylinder wall having an engagement ring projecting from the upper edge, and the inner tube discharges to the top wall. It has a pouring tube and an insertion tube provided with an outlet, and has a mouth portion provided with a rib for forming a liquid flow path between the mouth portion of the outer tube and the outer periphery of each of the pouring tube and the fitting tube. The mounting member includes a valve holding cylinder and a side wall provided with an engaging protrusion protruding inward, and the slit valve includes a cylinder wall fitted into the valve holding cylinder, and a central wall. A valve head comprising an orifice forming wall having a slit formed in a portion thereof, and a holding cylinder wall continuously provided so as to be inclined between the peripheral edge of the orifice forming wall and the upper end of the cylinder wall. A configuration characterized by the above is adopted.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, A is a container containing the content liquid, and consists of an outer tube A1 and an inner tube A2.
Tubes A1 and A2 are molded from a flexible synthetic resin, and contain liquids such as cosmetics, foods, and chemicals in the form of a liquid or a viscous material. A contains the A liquid, and the B liquid is contained between the outer tube A1 and the inner tube A2.
B is a slit valve formed of silicon rubber, elastomer, or soft synthetic resin, and is attached to the mouth of the outer tube A1 via an attachment member C formed of synthetic resin.
D is a cap molded from a synthetic resin.
[0007]
As shown in FIGS. 1 to 3, the outer tube A <b> 1 seals the mouth portion 1, the shoulder portion 2, the body portion 3 formed of a circular or elliptical tube body, and the tube body end portion of the body portion 3. The bottom seal portion 4 is formed.
The mouth portion 1 is composed of a top wall 6 having an opening 5 and a side cylinder wall 7, and an engagement ring 9 having a groove 8 provided at a predetermined position is provided on the periphery of the upper end of the side cylinder wall 7.
The lower part of the side cylinder wall 7 is expanded in diameter to form a screwed cylinder 10, and a screw 11 is engraved on the outer periphery thereof.
The shoulder portion 2 is provided with a locking piece 12 so that the cap D is positioned at a predetermined position.
[0008]
The inner tube A2 includes a mouth portion 20 and a shoulder portion 21, and a barrel portion 22 formed of a cylindrical body having the same shape as the outer tube A1, and a cylindrical end portion of the barrel portion 22 is formed of the barrel portion 3 of the outer tube A1. A bottom seal portion 23 is formed by sealing together with the cylindrical end portion.
As shown in FIG. 2, the bottom seal portion 23 may be sealed separately from the cylindrical end portion of the body portion 3 of the outer tube A1 to form the bottom seal portion 23a.
[0009]
The mouth portion 20 is composed of a pour tube 25 having a discharge port 24 provided on the top wall and a fitting insertion tube 26 having a diameter larger than that. The outer portion of the pour tube 25 protrudes outward at the upper end. A plurality of ribs 28 that form the locking portions 27 are arranged at regular intervals, and the liquid flow path X1 that is partitioned by the ribs 28 between the dispensing tube 25 and the opening 5 of the outer tube A1. Is formed.
[0010]
A plurality of ribs 29 extending from the upper end of the fitting tube 26 to the shoulder portion 21 and engaging with the inner circumference of the mouth portion 1 of the outer tube A1 are arranged on the outer periphery of the fitting tube 26 at regular intervals. In addition, a liquid flow path X2 partitioned by a rib 29 is formed between the fitting tube 26 and the inner periphery of the mouth portion 1 of the outer tube A1.
[0011]
As shown in FIG. 4, the slit valve B includes a valve base 30 and a valve head 31.
The valve base 30 has an annular substrate 32 and a cylindrical wall 33 standing upright from the inner peripheral edge of the substrate 32, and a holding ring 34 projects from the outer periphery of the substrate 32. Yes.
[0012]
The valve head 31 includes an orifice forming wall 35 and a holding cylinder wall 37 provided so as to be inclined between the peripheral edge 36 of the orifice forming wall 35 and the upper end of the cylinder wall 33.
The orifice forming wall 35 has a spherical outer surface with a recessed center, and a cross-shaped slit 38 is cut in the center, and four flaps 39 partitioned by the slit 38 are formed. Yes.
The orifice forming wall 35 includes the flap 39 and a peripheral portion 40 surrounding the flap 39, and an orifice is formed by opening and closing the flap 39.
On the inner surface of the orifice forming wall 35, a reinforcing rib 41 is formed in an annular shape so as to surround the end of the slit 38.
[0013]
The attachment member C has an upper wall 42 and a side wall 43, and a valve holding cylinder 44 that extends vertically is connected to the inner peripheral edge of the upper wall 42.
The inner periphery of the side wall 43 has a valve holding portion 45 and an enlarged diameter portion 46 positioned below the valve holding portion 45, and an engagement protrusion 47 projecting inwardly projects from the enlarged diameter portion 46. Has been.
A plurality of positioning protrusions 48 are arranged on the engaging protrusion 47 so that the slit valve B does not rotate with respect to the container opening 1 at the time of attachment.
[0014]
As shown in FIG. 5, the cap D has a top wall 50 and a side wall 51, and a concave portion is formed in the center of the top wall 50 to form a covered wall 52.
The wall 52 is provided with a valve presser 54 having a radius larger than the radius of curvature of the orifice forming wall 35 of the slit valve B and having a spherical protruding portion 53 protruding downward. A sealing ring 55 is suspended from the lower surface.
A screwing cylinder 56 extending downward is suspended from the peripheral edge of the wall 52, and a screw 57 that is screwed into the screw 11 of the outer tube A1 of the container is engraved on the inner periphery of the screwing cylinder 56. A positioning rib 58 having a lower end extending from the lower end of the screwed tube 56 is projected at a predetermined position on the outer periphery.
[0015]
Next, the effect based on the said structure is demonstrated.
When the outer tube A1 and the inner tube A2 are coupled, as shown in FIG. 3A, the rib 28 of the inner tube A2 is inserted into the opening 5 of the outer tube A1, and the locking portion 27 of the rib 28 The inner tube A2 is prevented from falling into the outer tube A1, and at the same time, the rib 29 is engaged with the inner periphery of the mouth portion 1 of the outer tube A1, the mutual positional relationship is restricted, and the outflow amount is constant in the circumferential direction. I am doing so.
[0016]
When mounting the slit valve B, first, the cylindrical wall 33 of the slit valve B is fitted and inserted into the valve holding cylinder 44 of the mounting member C, and the substrate 32 and the holding ring 34 are connected to the lower part and the side wall of the valve holding cylinder 44. It is mounted so as to be held between the 43 valve holding portions 45.
[0017]
Next, the attachment member C to which the slit valve B is attached is attached to the mouth portion 1 of the outer tube A1.
At the time of attachment, the engagement protrusion 47 of the attachment member C engages with the engagement ring 9 provided in the container mouth portion 1, is aligned and fitted vertically, and the slit valve B is connected to the outer tube A1. It will be fastened to the top wall 6 of the mouth portion 1.
[0018]
At that time, the lower end portion of the positioning protrusion 48 provided on the attachment member C is engaged with the groove 8 of the container mouth portion 1 and is positioned and inserted in the circumferential direction. Since the slit valve B does not rotate and the circumferential distortion does not occur, the mounting failure can be prevented.
Even if a force that twists the mounting member C is applied during use, the upper portion of the positioning projection 48 is fitted into the groove 8 of the mouth portion 1, so that the mounting member C does not rotate, and the slit The valve B is not distorted and deformed in the circumferential direction during use after installation.
[0019]
Next, the usage mode and operational effects of the extrusion container of the present invention will be described with reference to FIG.
In use, first, when the cap D is removed and the container body 3 is pressed, as shown in FIG. 6A, the content liquid A in the inner tube A2 comes out of the discharge port 24 and directly passes through the orifice forming wall 35 to the outside. The content liquid B in the outer tube A1 acts into the slit valve B through the liquid flow paths X2 and X1 so as to expand the valve head 31.
As shown in FIG. 6B, the two liquids pushed out into the slit valve B are partially mixed in the valve head 31, and then further pressing force is applied. When a certain internal pressure is reached, the slit 38 opens and the flap 39 is opened to form an orifice, and the two liquids are mixed to some extent at the same time and discharged.
[0020]
When the pressure on the container body 3 is released, the body 3 is restored and the inside of the valve head 31 becomes negative pressure. Therefore, the atmosphere is introduced from the orifice, and then the orifice is closed. Restore the original state.
[0021]
When the cap D is fitted after use, the protruding portion 53 of the valve presser 54 of the cap D engages with the orifice forming wall 35 of the slit valve B, thereby preventing the perturbation thereof.
Therefore, even if the container body 3 is pressed with the cap D fitted, the liquid does not come out of the slit 38 and contaminate the surroundings.
[0022]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists the following effect.
Since the slit valve is attached to the mouth of the outer tube, when the container body is pressed, the valve head first expands, and when the internal pressure reaches a certain internal pressure, the liquid content is discharged. Liquid came to be discharged at the same time.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional front view of an extrusion container of the present invention.
FIG. 2 is a partially sectional front view showing the bottom of another embodiment of the extrusion container.
FIGS. 3A and 3B are explanatory views of the main part of the container, in which FIG. 3A is a plan view and FIG.
4A and 4B are explanatory views of a slit valve and a mounting member, where FIG. 4A is a plan view, FIG. 4B is a sectional front view, and FIG. 4C is a bottom view.
5A and 5B are explanatory views of a cap, in which FIG. 5A is a cross-sectional plan view, and FIG. 5B is a bottom view.
FIGS. 6A and 6B are diagrams for explaining the operation of the extrusion container, in which FIG. 6A is an explanatory diagram at the beginning of discharge before the container body is pressed, and FIG.
[Explanation of symbols]
A Container A1 Outer tube A2 Inner tube B Slit valve C Mounting member D Cap 1, 20 Port 5 Opening 6 Top wall 7 Side cylinder wall 8 Groove 9 Engagement ring 10 Screwed cylinder 24 Discharge port 25 Outlet cylinder 26 Insertion Tube 28, 29 Rib 30 Valve base 31 Valve head 32 Substrate 33 Tube wall 35 Orifice forming wall 37 Holding tube wall 38 Slit 39 Flap 42 Upper wall 43 Side wall 44 Valve holding tube 45 Valve holding portion 48 Positioning projection 52 Covered wall 53 Projection Part 54 Valve retainer 55 Seal ring

Claims (2)

A two-component extrusion container comprising an outer tube and an inner tube,
At the mouth of the outer tube, the outlet of the inner tube, the liquid flow path formed by the outer periphery of the extraction tube of the inner tube and the opening of the outer tube, and a flap that is divided by a slit at the center are formed. A two-component extrusion container, wherein a slit valve in which an orifice is formed by opening and closing a flap based on a change in internal pressure in the container is attached via an attachment member. The outer tube has a mouth part composed of a top wall having an opening and a side tube wall with an engagement ring protruding from the upper edge.
The inner tube includes a pour tube and a fitting tube provided with a discharge port on the top wall, and forms a liquid flow path between each of the pour tube and the fitting tube at the mouth of the outer tube. It has a mouth with a rib ,
The mounting member includes a valve holding cylinder and a side wall provided with an engaging protrusion protruding inward.
The slit valve is continuously provided so as to incline between a cylinder wall inserted into the valve holding cylinder, an orifice forming wall having a slit cut in the center, and a peripheral edge of the orifice forming wall and the upper end of the cylinder wall. 2. A two-component extrusion container according to claim 1, further comprising a valve head comprising a holding cylinder wall.

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