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; 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, and a movable body 52 which is disposed in the holding cylinder 51 so as to be movable in a vertical direction; a closing plug 26 which is provided at the lid body 24 and inserted into a discharge cylinder 23 to close the discharge cylinder 23 in a state that the lid body 24 is closed; and a holding pin part 54 which is provided integrally with an upper end of the movable body 52, engaged with and held by the closing plug 26 in an initial state, and removed from the closing plug 26 when the lid body 24 is opened first.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, and a movable body disposed inside the retaining tube so as to be freely movable in the vertical direction, a blocking plug provided on the lid body and inserted into the discharge tube when the lid body is closed to block the discharge tube, and a retaining pin portion provided integrally with the upper end of the movable body, engaged and held by the blocking plug in an initial state, and detached from the blocking plug when the lid body is initially opened.

[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] FIG. 2 is a cross-sectional view of a main part of a discharge container according to an embodiment of the present invention in an initial state. [Diagram 2] 2 is a cross-sectional view of the discharge container shown in FIG. 1 in a state where a lid body is in the middle of being opened. [Diagram 3] 2 is a cross-sectional view of the discharge container shown in FIG. 1 in a state where the lid is open and the movable body is lowered to the lower end position. [Figure 4] 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. [Diagram 5] 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. [Figure 6] 4 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 is closed and then the movable body is moved to its original position. [Figure 7] 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 contents 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 more on the right side in FIG. 1. 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. 3) 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] Block plug 26 is integrally provided on the inner circumferential surface at its lower end with an annular locking projection 26a that projects radially inward.

[0030] 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.

[0031] The outflow tube 31 is cylindrical and extends in the vertical direction. In the discharge container 1 of this embodiment, a protective wall 32 is integrally provided at the lower end of the outflow tube 31. The protective wall 32 has a cage-like structure formed at intervals in the circumferential direction. The protective wall 32 has an outflow hole 33 at its lower end, and the outflow tube 31 communicates with the storage space 12a of the container body 10 through the intervals of the protective wall 32 and the outflow hole 33. 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 intervals of the protective wall 32 or the outflow hole 33 and the outflow tube 31. By providing the protective wall 32, 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. This can be prevented. Furthermore, when the protective wall 32 has a cage-like structure formed at intervals in the circumferential direction, it is possible to prevent the contents from remaining in the space between the mouth portion 10a of the container body 10 and the protective wall 32, thereby reducing the remaining amount in the discharge container 1. The protective wall 32 may have a cylindrical structure. In this case, the protective wall 32 can more reliably prevent the deformation of the valve body 41. Furthermore, by forming the protective wall 32, it is possible to prevent the inner layer body 12, which has been deformed and reduced in volume as the contents 2 flow out, from interfering with (hitting against) the contents check valve 40 and the movable valve 50.

[0032] The inside plug 30 is integrally provided with a cylindrical fitting wall 34 on the outer circumferential edge portion, and the fitting wall 34 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 35 that fits into the inner circumferential surface of the mouth portion 10a.

[0033] The discharge cap 20 has a check valve 40 for the contents. More specifically, the check valve 40 for the contents includes a valve body 41 disposed at the upper end of the outflow tube 31. The valve body 41 is annular 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 an elastic leg portion 43. In this embodiment, the elastic leg portion 43 is formed at only one location in the circumferential direction. That is, in this embodiment, the check valve for contents 40 is a single-point valve, and can open and close the outflow tube 31 by rotating up and down with the elastic leg portion 43 as a fulcrum. That is, the check valve for contents 40 allows the outflow of the contents 2 from the storage space 12a of the container body 10 to the discharge tube 23 side through the outflow tube 31, and opens and closes the outflow tube 31 so as to prevent the contents 2 from flowing from the discharge tube 23 side to the storage space 12a of the container body 10 through the outflow tube 31. By making the check valve for contents 40 a single-point valve, even if the radial size of the discharge cap 20 is small, the valve body 41 can be easily arranged inside the check valve for contents 40.

[0034] 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).

[0035] The valve body 41 is provided with a movable valve 50. The movable valve 50 includes a retaining cylinder 51 and a movable body 52.

[0036] The retaining tube 51 is cylindrical with its center at the axis of the valve body 41, is provided integrally with the valve body 41, penetrates the valve body 41, and extends downward from the valve body 41. The retaining tube 51 communicates with the storage space 12a of the container body 10 via the intermittent portion of the protective wall 32 and the outflow hole 33 at its lower end, and communicates with the discharge tube 23, i.e., the discharge hole 23a at its upper end. An annular stopper protrusion 53 is provided integrally on the inner peripheral surface of the lower end of the retaining tube 51. The retaining tube 51 of the movable valve 50 provided on the valve body 41 is disposed above the inner plug 30 and is covered by the inner plug 30 with respect to the storage space 12a.

[0037] The movable body 52 is a cylindrical shape with a top coaxial with the holding tube 51, and is arranged inside the holding tube 51 so as to be movable in the vertical direction. A downward step surface 52a is provided on the outer peripheral surface of the movable body 52 in the vertical middle portion, and the step surface 52a engages with the stopper protrusion 53 to determine the lower end position of the movable body 52 inside the holding tube 51. The outer diameter of the portion of the movable body 52 above the step surface 52a is slightly smaller than the inner diameter of the holding tube 51, and only a small gap through which the contents cannot pass is provided between the outer peripheral surface of the portion of the movable body 52 above the step surface 52a and the inner peripheral surface of the holding tube 51. The outer peripheral surface of the portion of the movable body 52 above the step surface 52a and the inner peripheral surface of the holding tube 51 may be configured to slide between each other. A stopper protrusion 52b protruding radially outward is integrally provided at the lower end of the movable body 52. The outer diameter of the stopper projection 52b is larger than the inner diameter of the retaining tube 51's retaining projection 53. The stopper projection 52b is disposed below the retaining tube 51's retaining projection 53, and when the movable body 52 moves upward relative to the retaining tube 51, the stopper projection 52b engages with the retaining projection 53 from below.

[0038] A retaining pin portion 54 is provided integrally with the upper end of the movable body 52. ​​The retaining pin portion 54 is rod-shaped and coaxial with the movable body 52 or axis O, and its outer diameter is slightly smaller than the inner diameter of the occlusion plug 26 provided in the lid 24. A large-diameter portion 54a having an enlarged outer diameter is provided integrally with the upper end of the retaining pin portion 54. Furthermore, a plurality of rib portions 54b extending upward from the upper end of the movable body 52 within a predetermined range are provided integrally with the retaining pin portion 54, arranged at intervals in the circumferential direction.

[0039] In order to determine the upper end position of the movable body 52 and prevent the lower end opening of the discharge tube 23 from being blocked by the movable body 52, 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.

[0040] 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 36 provided in the fitting wall 34.

[0041] 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.

[0042] 1, that is, in a state in which the lid 24 has never been opened after the discharge container 1 has been manufactured, for example, during distribution, the retaining pin 54 integrally provided on the movable body 52 of the movable valve 50 is engaged and held by the block plug 26 of the lid 24 in the closed state. When the lid 24 is first opened from the initial state, the retaining pin 54 disengages from the block plug 26, and thereafter, the retaining pin 54 does not engage with the block plug 26.

[0043] 2, when the lid 24 is first opened from the initial state and the occluding plug 26 moves upward while rotating around the hinge 25 together with the lid 24, the large diameter portion 54a of the retaining pin 54 is engaged with the locking projection 26a of the occluding plug 26, so that the retaining pin 54, i.e., the movable body 52, moves upward together with the occluding plug 26 relative to the cap body 21. When the movable body 52 moves upward to a predetermined position relative to the cap body 21, the stopper projection 52b provided at the lower end of the movable body 52 engages with the anti-pullout projection 53 provided at the lower end of the retaining tube 51 from below, and thereafter, the retaining tube 51 and the valve body 41 move upward together with the movable body 52 relative to the cap body 21 and the inner plug 30. Therefore, when the lid 24 is first opened from the initial state, the valve body 41 of the check valve for contents 40 is forcibly opened.

[0044] In this way, in the discharge container 1 according to this embodiment, in the initial state, the retaining pin portion 54 integrally provided on the movable body 52 of the movable valve 50 is configured to be engaged and held by the blocking plug 26 of the lid body 24 in the closed state, so that when the lid body 24 is opened for the first time from the initial state, the valve body 41 of the check valve 40 for the contents can be forcibly opened. As a result, even if the valve body 41 opens slightly during distribution or the like and the contents enter the inside of the cap body 21 and the contents solidify at the seal portion of the valve body 41 (the abutting portion between the valve body 41 and the outflow tube 31), the valve body 41 can be forcibly opened by opening the lid body 24 during use, and malfunction of the valve body 41 due to solidification of the contents can be eliminated. Therefore, according to the discharge container 1 according to this embodiment, it is possible to suppress discharge malfunctions such as the contents 2 not being discharged or the contents 2 becoming difficult to discharge during use.

[0045] 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.

[0046] As described above, when the lid 24 is first opened from the initial state and the valve body 41 is forcibly opened, if the lid 24 is then opened further, the upper end of the movable body 52 abuts against the protrusion 28, restricting further upward movement of the movable body 52, so that the retaining pin portion 54 is released from engagement with the occluding plug 26 and is removed from the occluding plug 26. As a result, as shown in Fig. 3, the movable body 52 descends to a position where the stepped surface 52a abuts against the retaining projection 53 from above. Accordingly, the contents check valve 40 returns to a state in which the valve body 41 closes the outflow tube 31.

[0047] Next, an operation of the dispensing container 1 according to this embodiment having the above configuration when dispensing the content 2 after the lid body 24 is opened for the first time from the initial state will be described.

[0048] As described above, when the cover 24 is opened from the initial state, the discharge tube 23, that is, the discharge hole 23a, is opened as shown in FIG.

[0049] 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.

[0050] When the trunk of the container body 10 is squeezed to increase the pressure inside the storage space 12a, as shown in Fig. 4, 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 opens the check valve 40 for the contents, and the outflow tube 31 communicates with the discharge tube 23 or the discharge hole 23a.

[0051] Therefore, by squeezing the trunk of the container body 10, the contents 2 stored in the storage space 12a can be discharged to the outside through the intermittent parts of the protective wall 32, the outflow hole 33, the outflow tube 31 and the discharge tube 23.

[0052] Furthermore, when the body of the container body 10 is squeezed and the pressure inside the storage space 12a is increased, the movable body 52 is pushed by the pressure and moves upward to a position where it abuts against the protrusion 28.

[0053] After the contents 2 are discharged from the discharge tube 23, the pressure in the storage space 12a drops when the squeeze of the body of the container body 10 is released. 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. 5, and the outflow tube 31 is closed by the valve body 41. At this time, the movable body 52 of the movable valve 50 is in an upper position where it abuts against the protrusion 28 or faces it with a small gap. In addition, the discharge hole 23a of the discharge tube 23 is filled with the contents 2 that flowed in during discharge.

[0054] 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. 6, the movable body 52 of the movable valve 50 descends to a position where the step surface 52a abuts against the retaining projection 53 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 movable body 52 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.

[0055] 5 and 6, 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 36, 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.

[0056] 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 movable body 52 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.

[0057] 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 generated 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 movable body 52 of the movable valve 50 descends, thereby 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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, such as 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. 7) as shown in Fig. 7. When the check valve for contents 40 is a three-point valve as shown in Fig. 7, 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]

[0064] 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 cylinder 23a Discharge hole 24 Lid 24a Ceiling wall 24b Peripheral wall 25 Hinge 26 Blockage 26a Locking protrusion 27 Ventilation holes 28 Convex 30 Inner stopper 31 Outflow pipe 32 Protective Wall 33 Outflow hole 34 Interlocking Wall 35 Seal part 36 Through hole 40 Content check valve 41 Valve body 42 Support 43 Elastic leg 50 Movable valve 51 Holding cylinder 52 Movable body 52a Step surface 52b Stopper protrusion 53 Stopper protrusion 54 Retaining pin part 54a Large diameter section 54b Rib section 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 provided with the valve body and a movable body disposed inside the retaining cylinder so as to be movable in a vertical direction; a blocking plug provided on the lid body and inserted into the discharge tube when the lid body is closed to block the discharge tube; a retaining pin portion which is integrally formed on the upper end of the movable body, which engages and is held by the block plug in an initial state, and which detaches from the block plug when the lid body is first opened.

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.

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