JP6990543B2 - Discharge container - Google Patents

Description

The present invention relates to a discharge container, and more particularly to a discharge container suitable for accommodating relatively highly viscous contents containing some solid substances such as sauce and miso.

Conventionally, a discharge container having a discharge cap provided with a discharge port at the mouth of the container body for accommodating the contents has been known. In such a discharge container, for example, by pressing (squeezing) the body of the container body, the contents contained in the container body can be discharged in a desired amount from the discharge port.

Such a discharge container has a check valve structure that allows the contents to be discharged from the container body through the discharge port, while blocking the inflow of the contents and the outside air into the container body. For example, in Patent Document 1, the container body is configured as a double container in which a volume-reducing deformable inner layer (inner container) is housed inside the outer layer (outer container), and between the discharge cap and the inner plug. A discharge container provided with a check valve (discharge valve) having a slit valve structure is described in the above.

According to such a check valve structure, when the body of the container body is pressed to discharge the contents and then the pressure on the body is released, the contents directed from the discharge port to the container body by the check valve. The inflow of outside air is blocked, and outside air is introduced between the outer layer and the inner layer through the intake hole provided in the discharge cap to restore the outer layer to its original shape while reducing the volume and deformation of the inner layer. Therefore, the contents can be discharged without being replaced with the outside air, whereby the contents remaining inside the container body can be made difficult to come into contact with the air and its deterioration or deterioration can be suppressed.

Japanese Unexamined Patent Publication No. 2013-95455

By the way, such a discharge container is often used for storing liquid contents such as soy sauce and cosmetics, but has a relatively high viscosity containing some solid substances such as sauce and miso. There is also a desire to use it for the purpose of accommodating the contents.

However, in the above check valve structure, since the check valve is composed of a single slit valve, when the contents are discharged, the solid matter contained in the contents is sandwiched between the slits constituting the slit valve. There is a risk that the slit valve will not close. If the slit remains open after ejection in this way, the outside air may invade the inside of the inner container, leading to deterioration or deterioration of the contents.

The present invention has been made in view of such circumstances, and an object of the present invention is that the check valve structure functions normally even when a relatively high-viscosity content containing a small amount of solid matter is contained. Further, it is an object of the present invention to provide a discharge container capable of suppressing deterioration of the quality of the contents due to the intrusion of outside air.

(1) The discharge container according to the present invention has an inner container whose volume is reduced and deformed as the contents decrease, and an outer container in which the inner container is provided and an intake hole for sucking outside air is provided between the inner container and the inner container. A container body provided with a container, a discharge cap attached to the mouth of the container body and provided with a discharge port for the contents, and the contents discharged from the inside of the inner container to the discharge port are allowed. It has a check valve structure that prevents outside air from entering the inside of the inner container from the discharge port, and the check valve structure includes a communication cylinder that communicates between the discharge port and the inside of the inner container. A first seal valve portion disposed at the first open end on the discharge port side of the communication cylinder, and a second seal valve portion disposed at the second open end on the inner container side of the communication cylinder. The second seal valve portion has a valve body that freely abuts on the discharge port side with respect to the inner surface of the communication cylinder, and the inner container side of the valve body toward the inner surface of the communication cylinder. It is characterized by having an urging portion for urging.

According to the discharge container according to the present invention, when the container body is pressed to discharge the contents and then the pressure of the container body is released, the contents directed from the discharge port to the inside of the inner container due to the check valve structure. The inflow of outside air is blocked, and the outside air is introduced between the outer container and the inner container through the intake hole provided in the outer container to reduce the volume of the inner container and restore the outer container to its original shape. Therefore, the contents can be discharged without being replaced with the outside air, thereby making it difficult for the contents remaining inside the container body to come into contact with the air, and its deterioration and deterioration can be suppressed. The check valve structure has a communication cylinder that communicates between the discharge port and the inside of the inner container, and a first seal valve portion is arranged at the first open end on the discharge port side of the communication cylinder, and the contents of the communication cylinder. Since the second seal valve portion is arranged at the second open end on the vessel side, even if the solid matter contained in the contents is caught and the first seal valve portion cannot be closed, the second seal valve portion is provided. By closing, the contents can be stored inside the communication cylinder, a filling seal with the contents can be formed inside the communication cylinder, and it is possible to prevent outside air from entering the inside of the inner container. In the second seal valve portion, when the pressing of the container body is released, the valve body separated from the inner surface of the communication cylinder moves toward the inner container side due to the urging by the urging portion, and the inner surface of the communication cylinder Since the structure is such that the contents are in contact with the communication cylinder, the contents inside the communication cylinder are difficult to return to the inner container side, and a filling seal with the contents can be satisfactorily formed inside the communication cylinder.

(2) The second open end is inclined from the inner container side of the communication cylinder toward the discharge port side from one side to the other side in the circumferential direction of the peripheral portion of the open end. The valve body may be rotatably provided with one side of the second open end in the circumferential direction as a fulcrum.

In this case, the second open end is inclined from the inner container side of the communication cylinder toward the discharge port side from one side to the other side in the circumferential direction of the peripheral portion of the open end, so that the second open end is second. By providing the valve body rotatably with one side in the circumferential direction of the open end as a fulcrum, it becomes easy to insert the valve body inside the communication cylinder. Further, since the valve body inserted inside the communication cylinder in this way diagonally contacts the inner surface of the communication cylinder, the load component acting perpendicularly to the inner surface of the communication cylinder becomes large, and the second The sealing property in the seal valve portion is improved.

According to the discharge container according to the present invention, the check valve structure functions normally even if a relatively high-viscosity content containing a small amount of solid matter is contained, and the quality of the content deteriorates due to the intrusion of outside air. Can be suppressed.

It is a vertical sectional view of the discharge container which concerns on one Embodiment of this invention. It is a bottom view of the check valve structure provided in the discharge container shown in FIG. 1. It is a vertical sectional view of the discharge container which concerns on another embodiment of this invention. It is a vertical sectional view of the discharge container which concerns on another embodiment of this invention.

Hereinafter, the discharge container according to the embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the discharge container 1 of the present embodiment has a container main body 2, a discharge cap 3, and a check valve structure 4. The discharge container 1 contains relatively high-viscosity contents containing some solids, including sauces such as pasta sauce and pizza sauce, and liquid seasonings containing ingredients such as ketchup, mayonnaise, and miso. It is possible to do.

The bottomed cylindrical container body 2, the ridged cylindrical discharge cap 3, and the tubular check valve structure 4 are arranged in a state where their respective central axes are positioned on a common axis. In the present embodiment, this common shaft is referred to as a container shaft O, the mouth 2a side of the container body 2 along the container shaft O is referred to as an upper side, and the bottom side (not shown) of the container body 2 is referred to as a lower side. Further, in a plan view seen from the container axis O direction, the direction intersecting the container axis O is referred to as the radial direction, and the direction rotating around the container axis O is referred to as the circumferential direction.

The container main body 2 includes an inner container 10 whose volume is reduced and deformed as the contents are reduced, and an outer container 11 in which the inner container 10 is incorporated. The container body 2 is, for example, a laminated peelable container (derami bottle) formed by blow molding and having the outer surface of the inner container 10 laminated on the inner surface of the outer container 11 so as to be peelable. As blow molding, for example, a laminated parison that is double (inside and outside) combined by extrusion molding or the like may be formed, and the container body 2 may be formed by blow molding the laminated parison (extrusion blow molding). ).

In addition, a preform for the outer container and a preform for the inner container are separately formed by injection molding or the like, and these are combined in a double (inner / outer) manner and integrally biaxially stretched and blow molded to form the container body 2. May be formed. Further, the preform for the outer container is first biaxially stretched and blow molded to form the outer container 11, then the preform for the inner container is placed inside the outer container 11, and then the preform for the inner container is formed. The container body 2 may be formed by biaxial stretching blow molding. Further, after molding the laminated preform, the container body 2 may be formed by biaxially stretching blow molding the preform. Further, the inner container 10 and the outer container 11 may be individually molded and then combined. It should be noted that these molding methods are merely examples and are not particularly limited.

The inner container 10 and the outer container 11 are made of synthetic resin, and the inner container 10 may be made of the same material or different materials as long as the inner container 10 is a combination that can independently reduce the volume (for example, peelable) with respect to the outer container 11. But it may be. Examples of the synthetic resin material include PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), nylon (polyamide), EVOH (ethylene-vinyl alcohol copolymer) and the like. From these synthetic resin materials, it is preferable that the outer container 11 and the inner container 10 are formed in a combination that can be peeled off (incompatible).

The container body 2 is formed in a bottomed tubular shape in which a mouth portion 2a, a shoulder portion 2b, a body portion 2c, and a bottom portion (not shown) are continuously arranged in this order from the upper side to the lower side. The diameter of the shoulder portion 2b gradually increases from the upper side to the lower side. The body portion 2c is formed, for example, in a circular shape in a cross-sectional view. The outer container 11 constituting the container main body 2 is squeeze-deformable, and the inner container 10 is deformed in a reduced volume as the outer container 11 is squeeze-deformed. Therefore, the portion of the outer container 11 located at least in the body portion 2c is elastically deformable toward the inside in the radial direction (inside the container).

The mouth portion 2a of the container body 2 extends upward from the upper end opening of the shoulder portion 2b. A male screw 12 for mounting the discharge cap 3 is formed on the outer peripheral surface of the mouth portion 2a of the container main body 2. The mouth portion 2a of the container body 2 has a configuration in which the mouth portion 10a of the inner container 10 and the mouth portion 11a of the outer container 11 are laminated. The upper end of the mouth portion 10a of the inner container 10 is folded back in an annular shape protruding outward in the radial direction, and this folded portion is arranged at the upper end opening edge of the mouth portion 11a of the outer container 11. Therefore, the mouth portion 11a of the outer container 11 is closed by the inner container 10.

In the mouth portion 11a of the outer container 11, an intake hole 13 for sucking outside air is formed between the outer container 11 and the inner container 10 via an outside air introduction hole 70 described later. The intake hole 13 may be formed in the body or bottom of the outer container 11 other than the mouth portion 11a, and the outside air may be directly sucked. In this case, the outside air introduction hole 70 becomes unnecessary. Further, for example, when the intake hole 13 is formed in the body of the outer container 11, an air valve 84, which will be described later, is arranged in the body of the outer container 11, and the air valve 84 is used to connect the inner container 10 and the outer container 11. While allowing air to be sucked in between, the outflow of air from between the inner container 10 and the outer container 11 may be restricted. The container body 2 may be squeezed while preventing air from flowing out from between the inner container 10 and the outer container 11 without providing the air valve 84.

The discharge cap 3 is attached to the mouth portion 2a of the container body 2. The discharge cap 3 includes a cap body 20 provided with a discharge port 20a for discharging the contents, and a mounting cap 21 for mounting the cap body 20 on the mouth portion 2a of the container body 2. The cap body 20 may be integrally formed with the mounting cap 21. That is, the cap body 20 may be integrated with the mounting cap 21, and the cap body 20 may be directly mounted on the mouth portion 2a of the container body 2.

The mounting cap 21 has a cylindrical peripheral wall portion 22 that covers the radial outside of the mouth portion 2a of the container body 2, an inner plug portion 23 arranged at the upper end opening edge of the mouth portion 2a of the container body 2, and a peripheral wall portion 22. It has a connecting portion 24 for connecting the inner plug portion 23 and the inner plug portion 23. The connecting portion 24 is connected to the inner peripheral surface of the peripheral wall portion 22, and a female screw 25 is provided on the inner peripheral surface of the peripheral wall portion 22 below the connecting portion 24. The female screw 25 is screw-coupled to the male screw 12 provided on the mouth portion 2a of the container body 2, so that the mounting cap 21 is mounted on the mouth portion 2a of the container body 2. The mounting cap 21 may be undercut fitted to the mouth portion 2a of the container body 2, for example.

The inner plug portion 23 includes an annular inner plug outer peripheral portion 30 arranged at the upper end opening edge of the mouth portion 2a of the container body 2, a communication cylinder 31 arranged radially inside the inner plug outer peripheral portion 30. An annular inner plug connecting portion 32 for connecting the radial inner edge of the inner plug outer peripheral portion 30 and the outer peripheral surface of the communication cylinder 31 is provided. The inner plug outer peripheral portion 30, the communication cylinder 31, and the inner plug connecting portion 32 are arranged coaxially with the container shaft O. The outer peripheral portion 30 of the inner plug has a rising cylinder portion 33 that protrudes upward and a rising cylinder portion 33 that protrudes downward in the radial direction from the rising cylinder portion 33 and is fitted to the inside of the mouth portion 2a of the container body 2. , A fitting cylinder portion 34 that seals the mouth portion 2a of the container body 2 is formed. The inner plug portion 23 may be provided separately from the mounting cap 21.

A fitting groove 26 is provided on the inner peripheral surface of the peripheral wall portion 22 of the mounting cap 21 above the connecting portion 24. A fitting protrusion 27 provided on the outer peripheral surface of the cap body 20 inserted inside the peripheral wall portion 22 is undercut fitted into the fitting groove 26. The cap body 20 may be screw-coupled to the peripheral wall portion 22 of the mounting cap 21, for example. The cap body 20 includes a ridged cylindrical discharge portion 40 fitted to the mounting cap 21 and a ridged tubular lid portion 41 connected to the discharge portion 40 via a hinge portion 42.

The discharge portion 40 includes a fitting peripheral wall portion 43 that fits inside the peripheral wall portion 22 of the mounting cap 21, and a top wall portion 44 that is connected to the upper end portion of the fitting peripheral wall portion 43. The above-mentioned fitting projection 27 is provided on the outer peripheral surface of the fitting peripheral wall portion 43. The top wall portion 44 is provided with a closing plate 45 for closing the discharge port 20a of the contents. The obstruction plate 45 is formed with a thin-walled weakening line 46 extending in an annular shape. The weakening line 46 extends continuously over the entire circumference in the circumferential direction. The weakening line 46 has, for example, a circular shape in a plan view of the container shaft O when viewed from the axial direction, and is arranged coaxially with the container shaft O.

A pillar portion 48 is projected upward at the outer peripheral edge portion of the removal portion 47 surrounded by the weakening line 46 of the block plate 45, and a pull ring 49 is continuously provided at the upper end portion of the pillar portion 48. ing. The pillar portion 48 is arranged on one side in the radial direction of the outer peripheral edge portion of the removal portion 47, and the pull ring 49 is arranged from the upper end portion of the pillar portion 48 to the other side in the radial direction of the outer peripheral edge portion of the removal portion 47. It is protruding toward. The pull ring 49 has an annular shape in a plan view of the container shaft O when viewed from the axial direction, and is arranged coaxially with the container shaft O.

When the pull ring 49 is pulled up, the weakening line 46 is broken and the discharge port 20a is opened in the top wall portion 44. The discharge port 20a has, for example, a circular shape in a plan view seen from the axial direction of the container shaft O, and is arranged coaxially with the container shaft O. A discharge cylinder 50 projecting upward is formed on the peripheral edge of the opening of the discharge port 20a on the upper surface of the top wall portion 44. The outer diameter of the discharge cylinder 50 is substantially the same, but the inner diameter of the discharge cylinder 50 gradually increases toward the upper side. As a result, the wall thickness of the discharge cylinder 50 gradually decreases toward the upper side, and the upper end portion of the discharge cylinder 50 is curved so as to open outward in the radial direction.

An engaging convex portion 51 projecting upward is formed in an annular shape on the upper surface of the top wall portion 44 on the outer side in the radial direction from the discharge cylinder 50. The inner and outer diameters of the engaging convex portion 51 gradually increase toward the upper side. The lid portion 41 includes a lid peripheral wall portion 60 connected to the discharge portion 40 via a hinge portion 42, and a lid top wall portion 61 connected to the upper end portion of the lid peripheral wall portion 60. On the inner peripheral surface of the lid peripheral wall portion 60, an engaging recess 62 with which the engaging convex portion 51 engages is formed in an annular shape. On the lower surface of the lid canopy wall portion 61, a seal cylinder portion 63 that is detachably fitted inside the discharge cylinder 50 is provided so as to project.

An outside air introduction hole 70 is formed in the top wall portion 44 of the discharge portion 40. The outside air introduction hole 70 is arranged radially outside the discharge cylinder 50 in the top wall portion 44 and radially inside the engaging convex portion 51. The fitting peripheral wall portion 43 is formed in a double tubular shape connected by reinforcing ribs, and an annular communication flow path 71 partitioned in the circumferential direction by reinforcing ribs is formed between the inner and outer cylinders. .. The upper end of the communication flow path 71 communicates with the outside air introduction hole 70. The communication flow path 71 extends along the container shaft O and opens at the lower end of the fitting peripheral wall portion 43. An air valve seat portion 72 projecting downward is formed at a portion located radially outside the communication flow path 71 at the lower end of the fitting peripheral wall portion 43. Further, a hanging tube portion 73 projecting downward is formed at a portion located radially inside the communication flow path 71 at the lower end of the fitting peripheral wall portion 43.

The connecting portion 24 of the mounting cap 21 is formed with a connecting hole 74 that connects the upper space and the lower space in the peripheral wall portion 22 of the mounting cap 21. Between the connection hole 74 and the communication flow path 71, an air valve 84 for switching communication between the connection hole 74 and the communication flow path 71 and its interruption is arranged. Further, the lower end portion of the peripheral wall portion 22 of the mounting cap 21 is tightly fitted to the portion of the mouth portion 2a of the container body 2 located below the intake hole 13. As a result, the communication between the intake hole 13 and the outside through the lower end opening of the peripheral wall portion 22 is blocked. Therefore, when the air valve 84 is opened, the outside air introduction hole 70, the communication flow path 71, the connection hole 74, and the intake hole 13 communicate with each other, and the outside air passes between the inner container 10 and the outer container 11 via the intake hole 13. be introduced.

The check valve structure 4 is arranged inside the discharge cap 3. The check valve structure 4 includes a communication cylinder 31, a first seal valve portion 80, and a second seal valve portion 81. The outer peripheral surface of the communication cylinder 31 is supported by the inner plug connecting portion 32 of the inner plug portion 23, and is arranged coaxially with the container shaft O. In the communication cylinder 31, the first open end 31a arranged on the upper side communicates with the discharge port 20a, and the second open end 31b arranged on the lower side communicates with the inside of the inner container 10. The first seal valve portion 80 is arranged at the first open end 31a of the communication cylinder 31. Further, the second seal valve portion 81 is arranged at the second open end 31b of the communication cylinder 31.

The first seal valve portion 80 is formed of a soft material such as rubber or elastomer. The first seal valve portion 80 includes an annular flange portion 82 sandwiched between the cap body 20 and the mounting cap 21, a discharge valve 83 connected radially inside the flange portion 82, and a flange portion 82. An air valve 84, which is connected to the outside in the radial direction of the above, is provided. The radial outer edge of the flange portion 82 is in contact with the inner peripheral surface of the rising cylinder portion 33 of the inner plug outer peripheral portion 30. On the upper surface of the flange portion 82, a first tubular body portion 85 that protrudes upward and is fitted to the outside of the hanging tubular portion 73 is disposed. Further, a second tubular body portion 86 that projects downward in the radial direction from the first tubular body portion 85 on the lower surface of the flange portion 82 and is fitted inside the fitting tubular portion 34 is disposed. ing.

The air valve 84 protrudes outward in the radial direction from the outer peripheral surface of the first tubular body portion 85, and is formed in an elastically deformable annular shape having the outer end portion in the radial direction as a free end. The radial outer end portion of the air valve 84 is in contact with the air valve seat portion 72 of the fitting peripheral wall portion 43 so as to be detachable from below over the entire circumference. As a result, the air valve 84 freely closes the outside air introduction hole 70 from the inside of the discharge cap 3. That is, the air valve 84 is a check valve that allows the inflow of air from the outside through the outside air introduction hole 70 into the discharge cap 3 and regulates the outflow of air from the inside of the discharge cap 3 to the outside through the outside air introduction hole 70. Functions as. The air valve 84 may be provided separately from the discharge valve 83.

The discharge valve 83 has a seal body 90 formed in the shape of a bottomed cylinder. The seal main body 90 is continuously provided at the radial inner end edge of the flange portion 82, passes through the first open end 31a, and extends to the inside of the communication cylinder 31. A slit valve 91a is formed on the bottom 91 of the seal body 90. The slit valve 91a allows the flow of the contents from the inner container 10 side to the discharge port 20a side, and blocks the flow of the contents from the discharge port 20a side to the inner container 10 side.

The bottom 91 of the seal body 90 is formed in a dome shape that bulges from the inner container 10 side toward the discharge port 20a side. On the other hand, the slit valve 91a is formed so that two slits are orthogonal to each other at the apex of the bottom portion 91 formed in a dome shape. The bottom 91 of the seal body 90 is not limited to a dome shape, but may have a flat shape. Further, the slit valve 91a may be formed of one slit or may be formed of three or more slits.

The second seal valve portion 81 is an integrated valve formed into a communication cylinder 31. The second seal valve portion 81 has a valve body 92 that is in contact with the inner surface 35 of the communication cylinder 31 so as to be detachable from the discharge port 20a side, and the valve body 92 toward the inner surface 35 of the communication cylinder 31 on the inner container 10 side. It has an urging unit 93 and an urging unit 93. The second open end 31b of the communication cylinder 31 is from one side (left side of the paper surface of the container shaft O in FIG. 1) to the other side (right side of the paper surface of the container shaft O in FIG. 1) in the circumferential direction of the peripheral edge portion 31b1 of the open end. The communication cylinder 31 is inclined from the inner container 10 side (lower side) toward the discharge port 20a side (upper side). The valve body 92 is rotatably provided with one side in the circumferential direction extending below the second open end 31b as a fulcrum.

As shown in FIG. 2, the valve body 92 is formed in a substantially disk shape when viewed from the bottom. Specifically, the valve body 92 has a shape in which a part of a disk is cut out in a straight line, and an urging portion 93 is continuously provided in the straight line portion. The urging portion 93 connects the straight portion of the valve body 92 and the open end peripheral portion 31b1 of the second open end 31b. As shown in FIG. 1, the urging portion 93 is a C-shaped leaf spring portion in a cross-sectional view that protrudes toward the inner container 10 from the open end peripheral edge portion 31b1. The molding position P3 of the valve body 92 is located on the inner container 10 side (lower side) of the second open end 31b of the communication cylinder 31. When the valve body 92 is rotated from the molding position P3 to the closing position P1 inside the communication cylinder 31, the urging portion 93 is stored and the valve body 92 moves toward the inner surface 35 of the communication cylinder 31 toward the inner container 10. Be urged.

The tip end portion 92a of the valve body 92 abuts on the inner surface 35 of the communication cylinder 31 at the closed position P1. The radial outer edge of the valve body 92, which is the tip end portion 92a, has a tapered shape that reduces the diameter from the lower surface to the upper surface of the valve body 92, so that the tip end portion 92a of the valve body 92 communicates with the molding position P3. It is easy to lure into the inside of the cylinder 31. Further, since the urging portion 93 is formed in a C shape in a cross-sectional view, the tip portion 92a of the valve body 92 can be slightly moved inward in the radial direction, and the length of the valve body 92 is assumed to be increased. Even if it is slightly larger than the inner diameter (length in the major axis direction) of the second open end 31b cut diagonally, the tip portion 92a of the valve body 92 can be inserted inside the communication cylinder 31. There is.

As shown in FIG. 1, the valve body 92 has a closing position P1 that abuts on the inner surface 35 of the communication cylinder 31 and closes the second open end 31b, and the discharge port 20a side (upper side) with respect to the inner surface 35 of the communication cylinder 31. ), Which is rotatably provided between the open position P2 that opens the second open end 31b. The valve body 92 allows the flow of the contents from the inner container 10 side to the discharge port 20a side, and blocks the flow of the contents from the discharge port 20a side to the inner container 10 side. The second seal valve portion 81 may be provided separately from the communication cylinder 31.

In the discharge container 1 configured as described above, when the contents are discharged, the lid portion 41 of the cap body 20 is first rotated upward around the hinge portion 42 to expose the discharge cylinder 50. When the discharge port 20a is blocked by the closing plate 45, the pull ring 49 is pulled up to break the weakening line 46, and the discharge port 20a is opened radially inside the discharge cylinder 50. Then, for example, the outer container 11 is squeeze-deformed (elastically deformed) inward in the radial direction while the container body 2 is tilted or turned upside down. As a result, the inner container 10 is deformed inward in the radial direction together with the outer container 11 to reduce the volume, so that the internal pressure of the inner container 10 increases.

Then, first, the valve body 92 of the second seal valve portion 81 arranged on the inner container 10 side of the communication cylinder 31 separates from the inner surface 35 of the communication cylinder 31 against the urging of the urging portion 93. The second open end 31b of the communication cylinder 31 is opened. When the second open end 31b of the communication cylinder 31 is opened, the contents flow into the inside of the communication cylinder 31 and the internal pressure of the communication cylinder 31 rises. Then, the slit valve 91a of the first seal valve portion 80 arranged on the discharge port 20a side of the communication cylinder 31 opens when the bottom portion 91 of the dome-shaped seal body 90 swells, and the communication cylinder 31 becomes the first. 1 The open end 31a is opened. As a result, the discharge port 20a and the inner container 10 communicate with each other through the communication cylinder 31, so that the contents contained inside the inner container 10 are discharged to the outside from the discharge port 20a.

After that, when the squeeze deformation of the outer container 11 is stopped or released, the increase in the internal pressure of the inner container 10 is stopped or the internal pressure of the inner container 10 is lowered, and the first seal valve portion 80 is originally deformed by the restoration deformation of the seal body 90. Returning to the state, the slit valve 91a is closed, and the first open end 31a of the communication cylinder 31 is closed. Further, in the second seal valve portion 81, the tip portion 92a of the valve body 92 abuts on the inner surface 35 of the communication cylinder 31 due to the urging of the urging portion 93, so that the second open end 31b of the communication cylinder 31 is closed. Will be done. As a result, the communication cylinder 31 is closed, and the communication between the discharge port 20a and the inner container 10 is cut off. Therefore, the ejection of the contents is stopped.

Further, by releasing the squeeze deformation of the outer container 11, the outer container 11 begins to be restored and deformed, so that a negative pressure is generated between the outer container 11 and the inner container 10. Then, since this negative pressure acts on the air valve 84 through the intake hole 13, the radial outer end portion of the air valve 84 is separated downward from the lower surface of the air valve seat portion 72 and communicates with the outside air introduction hole 70. The flow path 71 is opened. As a result, outside air flows into the inside of the discharge cap 3 from the outside through the outside air introduction hole 70, and this outside air flows in between the inner container 10 and the outer container 11 through the intake hole 13. As a result, even if the outer container 11 is restored and deformed, the outer surface of the inner container 10 is separated from the inner surface of the outer container 11, and the inner container 10 is maintained in a state of being reduced in volume and deformed.

As described above, according to the discharge container 1 according to the present embodiment, when the container body 2 is pressed to discharge the contents and then the container body 2 is released from the pressure, the check valve structure 4 provides a discharge port. The inflow of contents and outside air from 20a toward the inside of the inner container 10 is blocked, and outside air is introduced between the outer container 11 and the inner container 10 from the intake hole 13 provided in the outer container 11 to introduce the inner container. Since the outer container 11 can be restored to its original shape while the volume 10 is reduced and deformed, the contents are discharged without being replaced with the outside air, whereby the contents remaining inside the container body 2 are replaced with air. It is difficult to touch and its deterioration and deterioration can be suppressed.

The check valve structure 4 has a communication cylinder 31 that communicates with the discharge port 20a and the inside of the inner container 10, and a first seal valve portion 80 is provided at the first open end 31a on the discharge port 20a side of the communication cylinder 31. Since the second seal valve portion 81 is disposed at the second open end 31b on the inner container 10 side of the communication cylinder 31, the first seal valve is tentatively sandwiched by solid matter contained in the contents. Even if the portion 80 does not close, the second seal valve portion 81 closes to store the contents inside the communication cylinder 31, and forms a filling seal with the contents inside the communication cylinder 31 to form the filling seal of the inner container 10. It is possible to prevent outside air from entering the inside. The higher the viscosity of the contents of this filled seal, the higher the sealing property.

That is, when the first seal valve portion 80 and the second seal valve portion 81 are closed, a part of the contents remaining without being discharged is stored in the contents storage space inside the communication cylinder 31 to fill the communication cylinder 31. A seal is formed. Therefore, even if the solid matter contained in the content is caught and the first seal valve portion 80 is not completely closed, the content stored in the content storage space serves as a sealing material. 2 Covers the seal valve portion 81. Therefore, the outside air does not pass through the content storage space from the discharge port 20a and enter the inside of the inner container 10. Further, even when a solid substance is caught in the second seal valve portion 81 and a gap is generated, for example, if the content has a viscosity of a certain level or higher, the content stored in the content storage space is in the gap. It does not return to the inside of the inner container 10 through the inner container 10. Therefore, since the contents are maintained in the contents storage space, the filling seal can be maintained.

In the second seal valve portion 81, when the pressing of the container body 2 is released, the valve body 92 that has separated from the inner surface 35 of the communication cylinder 31 is urged by the urging portion 93 to move to the inner container 10 side. Since the rotating valve structure is such that it rotates and comes into contact with the inner surface 35 of the communication cylinder 31, it becomes difficult for the contents inside the communication cylinder 31 to return to the inner container 10 side, and the contents depend on the contents inside the communication cylinder 31. The filling seal can be formed well. Further, since the second seal valve portion 81 has a rotary valve structure instead of a slit valve structure, solid matter contained in the contents is less likely to be caught as compared with the case where the second seal valve portion 81 has a slit valve structure. Also, the force applied during squeeze is reduced.

Further, in the present embodiment, the second open end 31b is inclined from the inner container 10 side of the communication cylinder 31 toward the discharge port 20a side from one side to the other side in the circumferential direction of the open end peripheral edge portion 31b1. Therefore, the opening area of the second open end 31b becomes large, and it becomes easy to insert the valve body 92 inside the communication cylinder 31. Further, the valve body 92 rotatably inserted inside the communication cylinder 31 with one side in the circumferential direction of the second open end 31b as a fulcrum abuts diagonally with the inner surface 35 of the communication cylinder 31, for example. Compared with the case where the lower surface of the open end peripheral edge portion 31b1 of the second open end 31b is on the same plane orthogonal to the container axis O, the load component acting perpendicularly to the inner surface 35 of the communication cylinder 31 becomes larger. The sealing property of the second seal valve portion 81 is enhanced.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. In the following description, the same or equivalent configurations as those in the above-described embodiment are designated by the same reference numerals, and the description thereof will be simplified or omitted.

For example, as in the discharge container 1A according to another embodiment shown in FIG. 3, the configuration may include a first seal valve portion 80A that does not have a slit valve structure. The first seal valve portion 80A has a discharge valve 83A mounted on the upper end opening edge of the communication cylinder 31 so as to be detachable. The discharge valve 83A is formed, for example, in a circular shape in a plan view, and closes the first open end 31a of the communication cylinder 31 so as to be openable. The discharge valve 83A is arranged coaxially with the container shaft O. The discharge valve 83A is connected to the inner peripheral surface of the tubular body portion 87 via a plurality of elastic arms 88.

The elastic arm 88 is formed so as to extend in the circumferential direction, for example, to ensure appropriate springiness, and the inner end portion in the radial direction is connected to the outer peripheral edge portion of the discharge valve 83A, and the elastic arm 88 is radially formed. The outer end portion is connected to the tubular body portion 87. Then, when the contents inside the inner container 10 pass through the first open end 31a of the communication cylinder 31, the elastic arm 88 is elastically deformed so as to move the discharge valve 83A upward, and the discharge valve 83A is formed. Is designed to separate from the upper end opening edge of the communication cylinder 31.

Further, for example, as in the discharge container 1B according to another embodiment shown in FIG. 4, the configuration has the first seal valve portion 80B including the discharge valve 83B having a rotary valve structure, similarly to the second seal valve portion 81. There may be. The first seal valve portion 80B has a seal body 102 formed in a ridged cylinder shape in which the bottom opening is opened toward the inner container 10 side. A through hole 103a is formed in the top wall portion 103 of the seal body 102. An annular protrusion 104 is provided so as to project from the peripheral edge of the through hole 103a on the upper surface of the top wall portion 103.

The first seal valve portion 80B has a valve body 100 and a valve that flexibly abut on the discharge port 20a side with respect to the peripheral edge portion of the through hole 103a on the upper surface of the top wall portion 103 on the radial inner side of the annular projection 104. It has an urging portion 101 that urges the body 100 toward the inner container 10 toward the peripheral edge portion of the through hole 103a on the upper surface of the top wall portion 103. The valve body 100 has a closing position P11 that abuts on the upper surface of the top wall portion 103 and closes the through hole 103a, and a through hole 103a that separates from the upper surface of the top wall portion 103 toward the discharge port 20a (upper side). It is rotatably provided between the opening position P12 to be opened.

The valve body 100 and the urging portion 101 are integrated valves formed on the seal body 102. The molding position P13 of the valve body 100 is located on the inner container 10 side (lower side) of the lower surface of the top wall portion 103. When the valve body 100 is rotated from the molding position P13 to the closing position P11 on the upper surface side of the top wall portion 103 via the through hole 103a, the urging portion 101 is energized and the valve body 100 is the upper surface of the top wall portion 103. Is urged toward the inner container 10 side. Then, when the contents inside the inner container 10 pass through the first open end 31a of the communication cylinder 31, the urging portion 101 rotates the valve body 100 upward and makes the valve body 100 the top wall portion. It is designed to separate from the upper surface of 103.

In addition, it is possible to appropriately replace the components in the embodiment with well-known components without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

1 Discharge container 2 Container body 2a Mouth 3 Discharge cap 4 Check valve structure 10 Inner container 11 Outer container 13 Intake hole 20a Discharge port 31 Communication cylinder 31a First open end 31b Second open end 31b1 Open end peripheral edge 35 Inner surface 80 1st seal valve part 81 2nd seal valve part 92 valve body 93 urging part O container shaft

Claims (3)

An inner container whose volume is reduced and deformed as the contents decrease, and a container body having an outer container inside which the inner container is provided and an intake hole for sucking outside air is provided between the inner container and the inner container.
A discharge cap attached to the mouth of the container body and provided with a discharge port for the contents,
It has a check valve structure that allows discharge of contents from the inside of the inner container to the discharge port and prevents outside air from entering the inside of the inner container from the discharge port.
The check valve structure includes a communication cylinder that communicates with the discharge port and the inside of the inner container, a first seal valve portion disposed at the first open end of the communication cylinder on the discharge port side, and the above. It has a second seal valve portion disposed at the second open end on the inner container side of the communication cylinder, and has.
The second seal valve portion includes a valve body that is in contact with the inner peripheral surface of the communication cylinder so as to be detachable from the discharge port side, and the inner container side of the valve body toward the inner peripheral surface of the communication cylinder. Has an urging part, and
The forming position of the valve body is located closer to the inner container than the second open end of the communicating cylinder, and the valve body is rotated from the forming position to the closing position inside the communicating cylinder. The urging portion is stored, and the valve body is urged toward the inner peripheral surface of the communication cylinder.
The discharge container is characterized in that the urging portion is a leaf spring portion having a C-shape in cross section that protrudes toward the inner container side from the peripheral edge portion of the second open end . The second open end is inclined from the inner container side of the communication cylinder toward the discharge port side from one side to the other side in the circumferential direction of the peripheral portion of the open end.
The discharge container according to claim 1, wherein the valve body is rotatably provided with one side of the second open end in the circumferential direction as a fulcrum. The discharge container according to claim 1 or 2 , wherein the radial outer end edge, which is the tip end portion of the valve body, has a tapered shape in which the diameter is reduced from the lower surface to the upper surface of the valve body. ..

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