Discharge container

Abstract

To provide a discharge container which can inhibit failure in discharge of a content.SOLUTION: A discharge container 1 has a container body 10 and a discharge cap 20. The discharge cap 20 includes: a cap body 21 including a discharge cylinder 23; a lid body 24 attached to the cap body 21; an inside plug 30 including an outflow cylinder 31 and provided at the inner side of the cap body 21; a check valve 40 for a content including a valve body 41 disposed at an upper end of the outflow cylinder 31 and configured to open or close the outflow cylinder 31; a movable valve 50 including a holding cylinder 51 integrally provided with the valve body 41, a valve seat 52, and a ball body 53 which is disposed in the holding cylinder 51 so as to be movable in a vertical direction; and a closing plug 26 which is provided at the lid body 24 and inserted into the discharge cylinder 23 to close the discharge cylinder 23 in a state that the lid body 24 is closed, presses the ball body 53 against the valve seat 52 to make a sealing between the valve seat 52 and the ball body 53, and places the valve body 41 in contact with the outflow cylinder 31 thereby keeping the valve body 41 in a closed state.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a dispensing container having a container body made of synthetic resin for accommodating contents, and a dispensing cap attached to the opening of the container body. [Background technology]

[0002] 2. Description of the Related Art A known container for storing liquid contents such as soy sauce or edible oil is a dispensing container having a synthetic resin container body for storing the contents and a dispensing cap attached to the mouth of the container body.

[0003] Conventionally, as a discharge container as described above, there has been known a double container in which the container body is configured with an outer layer forming the outer shell, an inner layer which is freely deformable and can be reduced in volume and which is arranged inside the outer layer, and an outside air inlet which communicates between the outer layer and the inner layer, and the discharge cap is configured to have a cap body which is provided with a discharge tube and attached to the mouth, a lid body which is provided with a blocking plug which is inserted into the discharge tube and which is attached to the cap body so as to be able to be opened and closed, an inner plug which is provided with an outlet which communicates with the discharge tube and which is arranged inside the cap body, and a check valve for the contents which is provided with a valve body which opens and closes the outlet (see, for example, Patent Document 1).

[0004] In a discharge container configured as described above, by squeezing (pressing) the body of the container body with the lid open, the valve element of the check valve for the contents opens and the contents stored in the container body can be discharged to the outside through the outflow hole and the discharge tube. Furthermore, when the squeeze on the body is released after the contents have been discharged, the valve element of the check valve for the contents closes, preventing outside air from flowing into the interior of the container body, thereby preventing the contents from coming into contact with air and thereby preventing deterioration or alteration of the contents. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2016-159915 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the above-mentioned conventional dispensing containers, there are cases where the valve body opens slightly during distribution, etc., allowing the contents to enter inside the cap body. In this case, depending on the properties of the contents, the contents that have entered inside the cap body may solidify at the sealing part of the valve body, which may result in poor dispensing, such as the contents not being dispensed during use or becoming difficult to dispense.

[0007] The present invention has been made in consideration of the above problems, and has an object to provide a dispensing container that is capable of suppressing poor dispensing of the content. [Means for solving the problem]

[0008] The discharge container of the present invention is a discharge container having a container body made of synthetic resin for storing contents, and a discharge cap attached to the mouth of the container body, wherein the discharge cap has a discharge tube, a cap body attached to the mouth, a lid body attached to the cap body so as to be freely opened and closed, an outflow tube communicating with the discharge tube, an inner plug provided inside the cap body, a valve body disposed at the upper end of the outflow tube, a check valve for contents for opening and closing the outflow tube, a retaining tube provided integrally with the valve body, a valve seat provided on the inner surface of the retaining tube, and a ball body disposed inside the retaining tube above the valve seat and movable in the vertical direction, and a blocking plug provided on the lid body, which is inserted into the discharge tube when the lid body is closed to block the discharge tube, and which presses the ball body against the valve seat to seal the valve seat and the ball body, and which abuts the valve body against the outflow tube to hold it in a closed state.

[0009] In the above-mentioned configuration of the discharge container of the present invention, it is preferable that the check valve for the contents is a single-point valve having a support fixed to the inner plug and the valve body being integrally connected to the support by a single elastic leg portion.

[0010] In the above-mentioned configuration of the discharge container of the present invention, it is preferable that the container body is a double container having an outer layer constituting the outer shell of the container body, an inner layer which is freely deformable and can be reduced in volume and is arranged inside the outer layer, and an outside air inlet port which communicates between the outer layer and the inner layer. Effect of the Invention

[0011] According to the present invention, it is possible to provide a dispensing container capable of suppressing defective dispensing of the content. [Brief description of the drawings]

[0012] [Figure 1] 1 is a cross-sectional view of a main part of a discharge container according to an embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view of the discharge container shown in FIG. 1 with the lid body open. [Diagram 3] 2 is a cross-sectional view of the discharge container shown in FIG. 1 in a state where the container body is squeezed and the content is discharged from the discharge tube. FIG. [Figure 4] 2 is a cross-sectional view of the discharge container shown in FIG. 1 in a state where the squeeze of the container body is released and the valve body of the check valve for contents is closed. [Diagram 5] 2 is a cross-sectional view of the discharge container shown in FIG. 1 in a state where the valve body of the check valve for contents has been closed and then the ball body has moved to its original position. [Figure 6] FIG. 11 is a cross-sectional view of a main part of a discharge container according to a modified example in an initial state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] A discharge container 1 according to one embodiment of the present invention will be illustrated and described in detail below with reference to the drawings.

[0014] In this specification and the claims, the up-down direction refers to the up-down direction when the discharge container 1 is in the upright position shown in FIG.

[0015] As shown in FIG. 1, a dispensing container 1 according to one embodiment of the present invention has a container body 10 and a dispensing cap 20.

[0016] The container body 10 stores the contents 2. The contents 2 stored in the container body 10 are preferably liquids such as liquid seasonings with relatively low viscosity, such as soy sauce, or edible oil with relatively high viscosity, but may also be an aggregate of solids having fluidity.

[0017] In this embodiment, the container body 10 is a double container (delaminated peelable container) made of synthetic resin having an outer layer 11 and an inner layer 12. The outer shape of the container body 10 is a bottle shape with a cylindrical mouth portion 10a, but is not limited to a bottle shape as long as it has the mouth portion 10a.

[0018] The outer layer 11 constitutes the outer shell of the container body 10 and has a bottle shape corresponding to the container body 10. The outer layer 11 may be formed of a synthetic resin material such as polypropylene (PP), polyethylene (PE), or polyethylene terephthalate (PET). The outer layer 11 has a body portion (not shown) that is integrally connected to the lower end of the mouth portion 10a. The body portion is flexible and can be squeezed (pressed). That is, the body portion of the outer layer 11 can be depressed by being squeezed, and when the squeeze is released, it can restore itself to its original shape from the depressed state by its own elasticity.

[0019] The inner layer body 12 is made of a synthetic resin material such as ethylene-vinyl alcohol copolymer (EVOH) or polyethylene terephthalate (PET) and is formed into a bag shape that is thinner and more flexible than the outer layer body 11 and can be easily reduced in volume. The inner layer body 12 is arranged inside the outer layer body 11 in a state where it is peelably laminated on the inner surface of the outer layer body 11. Thus, in this embodiment, the container body 10 is configured as a laminated peelable container, which is a type of double container. The opening of the inner layer body 12 is connected to the opening end of the mouth part 10a of the outer layer body 11, and the inside of the inner layer body 12 is a storage space 12a for the contents 2. As the contents 2 flow out from the storage space 12a, the inner layer body 12 can be peeled off from the inner surface of the outer layer body 11 and can be reduced in volume so as to reduce its internal volume.

[0020] The container body 10 having the above configuration can be formed, for example, by extrusion blow molding in which a synthetic resin material for the outer layer 11 and a synthetic resin for the inner layer 12, which have low compatibility, are co-extruded to form a laminated parison, and this laminated parison is blow molded using a mold. The container body 10 can also be formed by biaxially stretching blow molding a double preform made of synthetic resin, in which an inner preform for forming the inner layer 12 is incorporated inside an outer preform for forming the outer layer 11. In this case, the double preform can be one in which both the outer preform and the inner preform are made of polyethylene terephthalate (PET).

[0021] The container body 10 is not limited to the above-mentioned peelable laminate container, but may be a double container having an outer layer 11 and an inner layer 12 formed separately from the outer layer 11 incorporated inside the outer layer 11.

[0022] An outside air inlet 13 that communicates between the outer layer 11 and the inner layer 12 is provided in the portion that constitutes the mouth portion 10a of the outer layer 11. The outside air inlet 13 is provided as a through hole that penetrates the portion that constitutes the mouth portion 10a of the outer layer 11, and can introduce outside air (air) from outside the container body 10 between the outer layer 11 and the inner layer 12.

[0023] In this embodiment, the outer layer 11 has a pair of outside air inlets 13 facing each other across the axis O of the mouth portion 10a, but it is sufficient to have at least one outside air inlet 13. In addition, the outside air inlet 13 may be formed in the trunk or bottom of the container body 10.

[0024] The discharge cap 20 is attached to the mouth portion 10a of the container body 10. The discharge cap 20 has a cap body 21 made of synthetic resin. The cap body 21 is a topped tube having a top wall 21a and a cylindrical mounting tube portion 21b provided integrally and continuously with the outer periphery of the top wall 21a, and is attached to the mouth portion 10a such that the mounting tube portion 21b surrounds the outer periphery of the mouth portion 10a and the top wall 21a covers the open end of the mouth portion 10a.

[0025] In the illustrated example, a female thread 22 is provided on the inner peripheral surface of the mounting tube portion 21b, and this female thread 22 is screwed into a male thread 14 provided on the outer peripheral surface of the mouth portion 10a. This allows the cap body 21 to be detachably fixed to the mouth portion 10a. The cap body 21 may be configured to be attached to the mouth portion 10a by tapping using an undercut engagement.

[0026] A discharge tube 23 is integrally provided on the upper surface of the top wall 21a. The discharge tube 23 is a part that discharges the content 2 stored in the storage space 12a of the container body 10 to the outside. The discharge tube 23 penetrates the top wall 21a and extends upward from the top wall 21a, and its inside forms a discharge hole 23a. In this embodiment, the upper end of the discharge tube 23 has a curled shape that curves outward while expanding in diameter. The shape of the discharge tube 23 is not limited to the curled shape described above.

[0027] A lid body 24 is provided integrally with the cap body 21. The lid body 24 has a top wall 24a and a peripheral wall 24b, and is formed in a cylindrical shape with a top having approximately the same diameter as the mounting tube portion 21b of the cap body 21, and is connected to the cap body 21 by a hinge 25 at a part of the outer circumferential surface of the peripheral wall 24b. The lid body 24 can be opened and closed between a closed state (state shown in FIG. 1) in which it is attached to the cap body 21 so as to cover the upper part of the cap body 21, and an open state (state shown in FIG. 2) in which it rotates from the closed state about the hinge 25 to open the upper part of the cap body 21.

[0028] The lid body 24 is provided with a block plug 26. In this embodiment, the block plug 26 is cylindrical and is provided integrally with the lid body 24 on the back surface (lower surface) of the top wall 24a of the lid body 24. When the lid body 24 is in a closed state, the block plug 26 is inserted into the discharge tube 23 and fits into the inner peripheral surface of the discharge tube 23. As a result, the discharge tube 23, i.e., the discharge hole 23a, is blocked by the block plug 26. On the other hand, when the lid body 24 is opened, the block plug 26 is detached from the discharge tube 23, and the discharge tube 23, i.e., the discharge hole 23a, is opened.

[0029] The discharge cap 20 has an inner plug 30. The inner plug 30 is provided with an outlet tube 31 that communicates with the discharge tube 23, and is provided inside the cap body 21 to cover the open end of the mouth portion 10a.

[0030] The outlet tube 31 is cylindrical and extends in the vertical direction. In the discharge container 1 of this embodiment, the inside plug 30 has an outlet hole 32, and the outlet tube 31 communicates with the storage space 12a of the container body 10 through the outlet hole 32. Therefore, the contents 2 stored in the storage space 12a of the container body 10 can flow out from the upper end of the discharge tube 23 to the outside through the outlet hole 32 and the outlet tube 31. A protective wall 36 may be provided integrally with the lower end of the outlet tube 31. By providing the protective wall 36, during the process of manufacturing the discharge container 1, for example, when the parts assembled with the inside plug 30 and the check valve for contents 40 described later are transported by a conveyor or the like, the parts collide with each other, deforming the valve body 41, and preventing the seal part from being sealed after completion. The protective wall 36 may be structured to extend continuously in the circumferential direction as shown in the figure. In this case, the protective wall 36 can more reliably suppress deformation of the valve body 41. The protective wall 36 may have a cage-like structure formed at intervals in the circumferential direction. In this case, the content is prevented from remaining in the space between the mouth portion 10a of the container body 10 and the protective wall 36, and the remaining amount of the discharge container 1 can be reduced.

[0031] The inside plug 30 is integrally provided with a cylindrical fitting wall 33 on the outer circumferential edge portion, and the fitting wall 33 fits inside the mounting tube portion 21b, thereby fixing the inside plug 30 to the cap body 21. Furthermore, the inside plug 30 is integrally provided with a cylindrical seal portion 34 that fits into the inner circumferential surface of the mouth portion 10a.

[0032] The discharge cap 20 has a check valve 40 for the contents. More specifically, the check valve 40 for the contents is provided with a valve body 41 arranged at the upper end of the outflow tube 31. The valve body 41 is disk-shaped and abuts against the upper end of the outflow tube 31 over the entire circumference to close the upper end of the outflow tube 31. The check valve 40 for the contents also has a support 42 fixed to the inner plug 30. The support 42 is cylindrical with a larger diameter than the outflow tube 31, and is fitted and fixed to the outside of the outflow tube 31 at its lower end portion and is fitted and fixed to a fixing groove 21c provided in the top wall 21a of the cap body 21 at its upper end portion. The valve body 41 is integrally connected to the support 42 by one elastic leg 43, and can be opened and closed by rotating up and down around the elastic leg 43 as a fulcrum. In other words, the check valve 40 for the contents is a single-point valve which allows the contents 2 to flow out from the storage space 12a of the container body 10 through the outflow tube 31 to the discharge tube 23 side, while opening and closing the outflow tube 31 so as to prevent the contents 2 from flowing in from the discharge tube 23 side to the storage space 12a of the container body 10 through the outflow tube 31.

[0033] The check valve for contents 40 can be configured such that a valve body 41, a support body 42 and an elastic leg portion 43 are integrally formed from an elastic body such as synthetic rubber, elastomer, or low density polyethylene (LDPE).

[0034] The valve body 41 is provided with a movable valve 50. The movable valve 50 includes a retaining tube 51, a valve seat 52, and a ball body 53. The movable valve 50 provided on the valve body 41, i.e., the retaining tube 51, the valve seat 52, and the ball body 53, are disposed above the inner plug 30 and are covered by the inner plug 30 with respect to the storage space 12a. The retaining tube 51 is cylindrical with its center at the axis of the valve body 41, and is provided integrally with the valve body 41 and penetrates the valve body 41 in the vertical direction. The retaining tube 51 communicates with the storage space 12a of the container body 10 through the outflow hole 32 at its lower end, and communicates with the discharge tube 23, i.e., the discharge hole 23a at its upper end. The valve seat 52 is provided integrally with the inner circumferential surface at the lower end of the retaining tube 51. The ball body 53 is a spherical valve body, and is disposed above the valve seat 52 inside the retaining tube 51 so as to be movable in the vertical direction. The ball body 53 can close the retaining tube 51 by abutting against the valve seat 52 over the entire circumference.

[0035] In order to prevent the lower end opening of the discharge tube 23 from being blocked by the ball bodies 53, a plurality of protrusions 28 may be provided on the back surface (lower surface) of the top wall 21a, arranged at equal intervals to surround the lower end opening of the discharge tube 23.

[0036] An air passage 60 is provided inside the cap body 21, connecting the air vent 27 provided in the top wall 21a of the cap body 21 to the outside air inlet 13. The air passage 60 communicates with the outside air inlet 13 from the air vent 27 via a through hole 35 provided in the fitting wall 33.

[0037] The air passage 60 is provided with an air check valve 70 that opens and closes the air passage 60. In this embodiment, the air check valve 70 is a membrane-like valve body that is integrally provided on the outside of the support 42. The air check valve 70 opens and closes the air passage 60 so as to permit the flow of air (outside air) from the air vent 27 to the outside air inlet 13 via the air passage 60, and to prevent the flow of air from the outside air inlet 13 side to the air hole 27 via the air passage 60.

[0038] Here, in the discharge container 1 according to this embodiment, as described above, when the cover 24 is in a closed state, the blocking plug 26 provided on the cover 24 is inserted into the discharge tube 23 of the cap body 21 to block the discharge tube 23, and presses the ball body 53 of the movable valve 50 provided on the valve body 41 of the check valve 40 against the valve seat 52 to hold the valve body 41 in a closed state. That is, when the cover 24 is in a closed state, the blocking plug 26 protrudes downward from the lower end of the discharge tube 23 and abuts against the ball body 53, pressing the ball body 53 against the valve seat 52, and pressing the valve body 41 downward via the ball body 53, the valve seat 52, and the retaining tube 51 to press the valve body 41 against the upper end of the outflow tube 31. Therefore, when the lid body 24 is closed, the valve body 41 of the contents check valve 40 and the ball body 53 of the movable valve 50 are both maintained in a closed state (sealed state) by the blocking plug 26.

[0039] In this manner, in the discharge container 1 according to the present embodiment, when the lid 24 is closed, the valve body 41 of the check valve 40 for the contents and the ball body 53 of the movable valve 50 can be maintained in a closed state by the blocking plug 26, so that the valve body 41 or the ball body 53 can be prevented from opening slightly during distribution, etc., and the contents 2 can be prevented from entering the inside of the cap body 21. Therefore, according to the discharge container 1 according to the present embodiment, the contents 2 that have entered the inside of the cap body 21 can be prevented from solidifying at the seal part of the valve body 41 (the abutting part between the valve body 41 and the upper end of the outflow tube 31) or the seal part of the ball body 53 (the abutting part between the ball body 53 and the valve seat 52), and discharge defects such as the contents 2 not being discharged or being difficult to discharge during use can be prevented.

[0040] Furthermore, in the discharge container 1 of this embodiment, the check valve for the contents 40 is a single-point valve having a support body 42 fixed to the inner plug 30, and the valve body 41 is integrally connected to the support body 42 by a single elastic leg portion 43. This makes it possible to obtain the above-mentioned effects while having a simple configuration of the check valve for the contents 40, thereby reducing the cost of the discharge container 1.

[0041] Next, the operation of the dispensing container 1 according to this embodiment having the above-mentioned configuration when dispensing the content 2 will be described.

[0042] When discharging the contents 2 from the dispensing container 1, first, the cover 24 is opened to open the discharge tube 23, i.e., the discharge hole 23a, as shown in Fig. 2. At this time, the check valve 40 for the contents is in a state in which the valve body 41 closes the outflow tube 31, and the movable valve 50 is in a state in which the ball body 53 closes the retaining tube 51.

[0043] Next, the body of the container body 10 is squeezed to discharge the contents 2. When the body of the container body 10 is squeezed, the air check valve 70 closes and air is retained between the outer layer 11 and the inner layer 12, so that by squeezing the body, the inner layer 12 can be deformed and reduced in volume through the air, thereby pressurizing the inside of the storage space 12a.

[0044] When the trunk of the container body 10 is squeezed to increase the pressure inside the storage space 12a, as shown in Fig. 3, the valve body 41 is pushed by the pressure and pivots upward about the elastic leg portion 43 as a fulcrum, moving away from the outflow tube 31. This causes the contents check valve 40 to be in an open state, and the outflow tube 31 communicates with the discharge tube 23 or the discharge hole 23a.

[0045] Furthermore, when the barrel of the container body 10 is squeezed to increase the pressure inside the storage space 12a, the ball 53 is pushed by the pressure and moves upward and away from the valve seat 52. This also opens the movable valve 50, and the retaining cylinder 51 communicates with the discharge cylinder 23 or the discharge hole 23a.

[0046] Therefore, by squeezing the body of the container body 10, the contents 2 stored in the storage space 12a can be discharged to the outside through the outflow hole 32, the outflow tube 31, and the discharge tube 23, and can also be discharged to the outside through the outflow hole 32, the holding tube 51, and the discharge tube 23.

[0047] After the contents 2 are discharged from the discharge tube 23, the squeeze of the body of the container body 10 is released, and the pressure in the storage space 12a drops. When the squeeze of the body is released and the pressure in the storage space 12a drops, the valve body 41 first returns to its original position (the position shown in FIG. 1), that is, to the position where it abuts against the upper end of the outflow tube 31, due to the restoring force (elastic force) of the elastic leg portion 43, as shown in FIG. 4, and the outflow tube 31 is closed by the valve body 41. At this time, the ball body 53 of the movable valve 50 is in a position spaced upward from the valve seat 52 without abutting against the valve seat 52. In addition, the discharge hole 23a of the discharge tube 23 is filled with the contents 2 that flowed in during discharge.

[0048] When the squeeze of the body of the container body 10 is released, the pressure in the storage space 12a drops, and the outflow tube 31 is closed by the valve body 41 of the check valve for contents 40, as shown in FIG. 5, the ball body 53 of the movable valve 50 descends until it abuts against the valve seat 52 while the outflow tube 31 remains closed by the valve body 41 of the check valve for contents 40. At this time, the contents 2 inside the discharge tube 23 are sucked back (sucked back) toward the inside of the retaining tube 51 by the amount of the ball body 53 descending. That is, the movable valve 50 has a function as a suck back valve, and after the contents 2 are discharged, at least a part of the contents 2 remaining inside the discharge tube 23, i.e., the contents 2 filling the discharge hole 23a, is sucked back toward the retaining tube 51.

[0049] 4 and 5, when the body of the container body 10 is squeezed to discharge the contents 2, and then the squeeze of the body of the container body 10 is released, negative pressure is created between the outer layer 11 and the inner layer 12, the air check valve 70 is opened, and outside air is introduced between the outer layer 11 and the inner layer 12 from the air vent 27 through the air passage 60, the through hole 35, and the outside air inlet 13. This allows the portion of the outer layer 11 corresponding to the body to be restored to its original shape while the inner layer 12 is kept volume-reduced and deformed.

[0050] In this manner, in the discharge container 1 according to the present embodiment, the movable valve 50 is provided on the valve body 41 of the check valve 40 for the contents, so that after the contents 2 are discharged from the discharge tube 23 and then the valve body 41 closes the outflow tube 31, the ball body 53 of the movable valve 50 descends, so that the contents 2 remaining inside the discharge tube 23 when the contents 2 are discharged can be sucked back to the retaining tube 51. Therefore, after the contents 2 are discharged, when the cover body 24 is closed and the blocking plug 26 is inserted into the discharge hole 23a of the discharge tube 23, the contents 2 can be prevented from overflowing from the discharge tube 23.

[0051] In particular, when a double container is used as the container body 10, after the contents 2 are discharged, the body of the outer layer 11 returns to its original shape while the inner layer 12 remains deformed in volume, so the reduced pressure in the storage space 12a that occurs when the squeeze of the body is released is relatively small, and the contents 2 are likely to remain inside the discharge tube 23. However, according to the discharge container 1 of this embodiment, even in such a case, after the contents 2 are discharged from the discharge tube 23 and then the valve body 41 closes the outflow tube 31, the ball body 53 of the movable valve 50 descends, sucking the contents 2 remaining inside the discharge tube 23 back to the retaining tube 51 side, thereby effectively preventing the contents 2 from overflowing from the discharge tube 23 when the lid body 24 is closed and the blocking plug 26 is inserted into the discharge hole 23a of the discharge tube 23.

[0052] The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit and scope of the present invention.

[0053] For example, in the above embodiment, a double-layered container is used as the container body 10, but this is not limiting, and a single-layered container may be used as long as it is made of synthetic resin.

[0054] In addition, in the above embodiment, the container body 10 used has a body portion that is squeezable and returns to its original shape when the squeeze is released, but this is not limited to this, and it is also possible to use a body portion that is squeezable but does not return to its original shape when the squeeze is released.

[0055] Furthermore, in the above embodiment, the discharge cap 20 is configured as a hinge cap in which the lid body 24 is connected to the cap body 21 by a hinge 25, but this is not limited to this, and the lid body 24, which is provided separately from the cap body 21, may be configured to be freely attached and detached to the cap body 21 by screw connection or undercut engagement, etc.

[0056] Furthermore, in the above embodiment, an outside air inlet 13 is provided in a portion corresponding to the mouth portion 10a of the outer layer 11, but an outside air inlet may be provided in other portions, such as the body or bottom of the outer layer 11, as long as outside air can be introduced between the outer layer 11 and the inner layer 12 when the squeezed outer layer 11 returns to its original shape.

[0057] Furthermore, in the above embodiment, the check valve for contents 40 is a single-point valve, but it is not limited thereto, and various configurations may be used as long as the valve body 41 is configured to open and close the outflow tube 31. For example, as shown in Fig. 6, the check valve for contents 40 may be a three-point valve in which the valve body 41 is connected to a support body 42 by three elastic legs 43 (only two are shown in Fig. 6). When the check valve for contents 40 is a three-point valve as shown in Fig. 6, the valve body 41 can be opened and closed without tilting, and stable discharge and sealing of the contents 2 can be obtained. [Explanation of symbols]

[0058] 1 Discharge container 2 Contents 10 Container body 10a Mouth 11 Outer body 12 Inner layer 12a Storage space 13 Outside air intake 14 Male thread 20 Discharge cap 21 Cap body 21a Top wall 21b Mounting tube part 21c Fixed groove 22 Female thread 23 Discharge tube 23a Discharge hole 24 Lid 24a Ceiling wall 24b Surrounding wall 25 Hinge 26 Blockage 27 Ventilation holes 28 Convex 30 Inner stopper 31 Outflow tube 32 Outflow hole 33 Interlocking Walls 34 Seal part 35 Through hole 36 Protective Wall 40 Content check valve 41 Valve body 42 Support 43 Elastic leg 50 Movable valve 51 Holding tube 52 Valve seat 53 Ball body 60 Ventilation Channel 70 Air check valve O axis

Claims

1. A discharge container having a synthetic resin container body for storing contents and a discharge cap attached to a mouth part of the container body, The discharge cap, A cap body having a discharge tube and attached to the mouth portion; A lid body attached to the cap body so as to be freely opened and closed; An outlet tube communicated with the discharge tube and an inner plug provided inside the cap body; A contents check valve having a valve body disposed at an upper end of the outflow tube and opening and closing the outflow tube; a movable valve including a retaining cylinder integrally formed with the valve body, a valve seat provided on an inner peripheral surface of the retaining cylinder, and a ball body disposed inside the retaining cylinder above the valve seat so as to be movable in a vertical direction; a blocking plug that is provided on the lid body and is inserted into the discharge tube when the lid body is in a closed state to block the discharge tube, and that presses the ball body against the valve seat to seal between the valve seat and the ball body, and abuts the valve body against the outflow tube to maintain the valve body in a closed state.

2. 2. The discharge container according to claim 1, wherein the check valve for the contents is a single-point valve having a support fixed to the inside plug, and the valve body is integrally connected to the support by one elastic leg.

3. The container body is an outer layer body constituting an outer shell of the container body; an inner layer body that is freely shrinkable and deformable and is disposed inside the outer layer body; 3. The discharge container according to claim 1, which is a double container provided with an outside air inlet communicating between the outer layer body and the inner layer body.

Images