JP2020055557A - Discharge container - Google Patents

Abstract

To provide a discharge container from which a plugged discharge cap can be easily removed from its mouth.SOLUTION: A discharge container 1 includes: a container body 2 provided with an ambient air introduction port 13 on its mouth 2a; a cap body 40 covering the mouth 2a; an inside plug 60 having a closing wall 61, and a cylindrical wall 65; and a nonreturn valve 70 for opening/closing an outflow hole 64. A discharge cap 3 is attached to the mouth 2a by plugging. Further, the discharge container 1 is provided with: plural longitudinal ribs 68 integrally disposed on one surface of either an inner peripheral surface of the mouth 2a or an outer peripheral surface of the cylindrical wall 65; and screw parts 26 that are integrally disposed the other surface of either the inner peripheral surface of the mouth 2a or the outer peripheral surface of the cylindrical wall 65, and bite into the plural longitudinal ribs 68 to hold and prevent the discharge cap 3 from coming off the mouth 2a, and that move along a biting-in part 68a when the discharge cap 3 is rotated relative to the mouth 2a in order to apply push-up force upward to the discharge cap 3.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a discharge container including a container body having a double structure including an outer container body and an inner container body, and a discharge cap attached to an opening of the container body.

  Conventionally, as a container for storing cosmetics such as lotion, shampoo, rinse, liquid soap, food seasoning or chemicals as contents, a container body of a double structure having an outer container body and an inner container body, 2. Description of the Related Art There is known a discharge container including a discharge cap attached to an opening of a container body, and discharging a content from a discharge port provided in the discharge cap.

  An outside air introduction port for introducing outside air between the outer container body and the inner container body is provided at an opening of the container body of such a discharge container. Also, inside the discharge cap, an inner plug provided with a flow hole for the content in a closed wall covering the opening of the mouth is fixed, and between the discharge cap and the inner plug, from the inside of the inner container body. A check valve that opens and closes the flow hole is provided to allow the outflow of the contents toward the discharge port through the flow hole. Thus, after the content is discharged from the discharge port, the outside air is introduced between the outer container body and the inner container body through the outside air inlet while the check valve prevents the outside air from flowing into the inner container body from the discharge port. Can be introduced to reduce the volume of only the inner container while keeping the outer container in the original shape. Therefore, it is possible to discharge the contents contained in the inner container body without displacing the air with the outside air, thereby making it difficult for the contents remaining in the inner container body to come into contact with air, and to suppress the deterioration and deterioration thereof. it can.

  In addition, the above-described discharge container is opened for the purpose of obtaining a higher tamper-proof effect than a screw-type discharge cap having a female screw portion engaged with a male screw portion provided on the outer peripheral surface of the mouth portion. There is a known one that employs a stopper-type discharge cap that is difficult to re-attach later (for example, see Patent Document 1).

JP 2018-122860 A

  For example, in a discharge container in which the container body and the discharge cap are formed of different materials, such as a case in which a discharge cap made of polypropylene resin or polyethylene resin is attached to the mouth of the container body made of polyethylene terephthalate resin, the container body When recycling (reusing), it is required to remove the discharge cap from the container body and separate the containers.

  On the other hand, even for such a discharge container, it is required to employ a plug-type discharge cap in order to obtain a high tamper-evident effect. However, since it is difficult to remove the stopper cap of the discharge cap from the mouth, there is a problem that the operation of separating the discharge cap when recycling the container body becomes complicated.

  An object of the present invention is to solve such a problem, and an object of the present invention is to provide a discharge container that can easily remove a plugged discharge cap from a mouth. .

  The discharge container of the present invention has an outer container body, and a volume-reducing and deformable inner container body disposed inside the outer container body, and has a cylindrical opening provided with an outside air introduction port. A container body having a structure, a top wall provided with a discharge port for contents, and a cylindrical side wall connected to the top wall, the cap body covering the mouth, and the mouth fixed to the cap body. An inner plug having a closing wall covering the opening of the opening, and a cylindrical wall provided with a sealing portion fitted to the inner peripheral surface of the opening, wherein the closing wall is provided with a flow hole connected to the discharge port. A check valve that opens and closes the flow hole so as to allow the flow of contents from the inside of the inner container body toward the discharge port through the flow hole, and the cap body and the inner plug And a discharge container having a discharge cap having the check valve attached to the mouth by a stopper, wherein an inner peripheral surface of the mouth is provided. A plurality of vertical ribs integrally provided on one of the outer peripheral surfaces of the cylindrical wall and projecting in the radial direction and extending in the vertical direction, and an inner peripheral surface of the mouth portion or an outer peripheral surface of the cylindrical wall. When the discharge cap is provided integrally with any one of the surfaces and cuts into the plurality of vertical ribs to hold the discharge cap against the mouth, and the discharge cap is relatively rotated with respect to the mouth. And a screw portion for relatively moving along a biting portion biting into the plurality of vertical ribs to apply an upward pushing force to the discharge cap.

  In the discharge container of the present invention, in the above-described configuration, the screw portion is provided on an inner peripheral surface of a cylindrical inner opening portion of the inner container body that forms the mouth portion, and a plurality of screws are provided on an outer peripheral surface of the cylindrical wall. Is preferably provided.

  In the discharge container according to the aspect of the invention, it is preferable that the inner plug is formed of a synthetic resin material that is softer than the inner container.

  In the discharge container of the present invention, in the above configuration, it is preferable that the container body is made of polyethylene terephthalate resin.

  In the discharge container of the present invention, in the above configuration, it is preferable that the inner plug is made of a polypropylene resin or a polyethylene resin.

  In the discharge container according to the aspect of the invention, it is preferable that, in the above-described configuration, the outside air introduction port be provided radially through a cylindrical outer opening of the outer container body that forms the opening.

  In the discharge container according to the aspect of the invention, in the above-described configuration, the outside air introduction port may be a cylindrical outer opening of the outer container body forming the opening and a cylindrical inner opening of the inner container forming the opening. It is preferably provided between the opening and the mouth.

  In the above configuration, the discharge container of the present invention is provided on an outer peripheral surface of the mouth below the outside air introduction port, and abuts on an inner peripheral surface of the side wall over the entire circumference to form the side wall and the mouth. It is preferable to have an annular mouth-side seal portion that seals between the two, and an outside air vent provided on the top wall.

  ADVANTAGE OF THE INVENTION According to this invention, the discharge container which can easily remove the plugged discharge cap from a mouth part can be provided.

1 is a partially cutaway front view of a discharge container according to an embodiment of the present invention. It is an expanded sectional view of the principal part of the discharge container shown in FIG. It is a partially cutaway front view of a preform assembly. FIG. 2 is a cross-sectional view illustrating a state in which a discharge cap of the discharge container illustrated in FIG. 1 is relatively rotated with respect to a mouth. It is a modification of the discharge container shown in FIG. 1, and is a cross-sectional view showing a case where an outside air introduction port is provided between an outer port and an inner port.

  Hereinafter, the present invention will be described more specifically with reference to the drawings.

  A discharge container 1 according to an embodiment of the present invention shown in FIGS. 1 and 2 is a squeeze type container used for containing a food seasoning such as soy sauce as a content (content liquid). A main body 2 and a discharge cap 3 are provided.

  In this specification and the appended claims, the vertical direction refers to the vertical direction in a state where the discharge container 1 is in an upright posture in which the discharge cap 3 is positioned above the container main body 2 as shown in FIG. It means direction. The radial direction means a direction passing through the axis O of the discharge container 1 and along a straight line perpendicular to the axis O.

  The container main body 2 has a double structure including an outer container body 10 and an inner container 20 housed inside the outer container body 10. In the present embodiment, the container body 2 is configured as a delamination container (delamination container).

  The outer container body 10 is a part that forms the outer shell of the container body 2, and has a cylindrical outer opening 11 that forms the outer shell part of the cylindrical mouth 2 a of the container body 2, and a lower end of the outer opening 11. And a body 12 integrally connected to the body.

  The outside opening 11 is provided with a plurality of outside air introduction ports 13. Each of these outside air introduction ports 13 is an elongated through hole that penetrates the outside port 11 in the radial direction and extends in the circumferential direction. The plurality of outside air introduction ports 13 communicate with the outer container body 10 and the inner container body 20, respectively, and introduce outside air between the outer container body 10 and the inner container body 20 through the outer air introduction ports 13. can do.

  In the present embodiment, a pair of outside air introduction ports 13 opposed to each other with the axis O interposed therebetween is provided in the outside opening section 11, but if at least one outside air introduction port 13 is provided, the outside The number of outside air introduction ports 13 provided in the mouth 11 can be variously changed.

  A neck ring 14 is integrally provided at the lower end of the outer opening 11. The neck ring 14 extends annularly over the entire circumference of the outer opening 11 and protrudes radially outward from the outer peripheral surface of the outer opening 11.

  The body portion 12 is integrally connected to the lower end of the outer opening portion 11, and has a shoulder-shaped portion 12 a which gradually expands downward and projects radially outward with respect to the outer opening portion 11, and a shoulder-shaped portion. It has a substantially cylindrical trunk body part 12b having a slightly constricted portion that is integrally connected to the lower end of 12a and a bottom part 12c that closes the lower end of the trunk body part 12b.

  The torso main body portion 12b is flexible, and can be elastically deformed by being squeezed (pressed) so that it can be depressed inward in the radial direction. You can restore on your own. By making the body 12b elastically deformable by squeezing, the operation of discharging the contents can be easily performed, and the body 12b can easily return to the original shape after the contents are discharged. In this way, the outside air is reliably introduced through the outside air introduction port 13 between the outer container body 10 and the inner container body 20 so that the container body 2 can reliably exhibit the function as a laminated peeling container. be able to.

  A plurality of (18) concave ribs 15 extending in the vertical direction are provided on the shoulder-like portion 12a at equal intervals over the entire circumference in the circumferential direction. In FIG. 1, for convenience, only one concave rib 15 is denoted by a reference numeral. By providing a plurality of concave ribs 15 on the shoulder-like portion 12a, the inner container body 20 can be easily separated from the outer container body 10 at the shoulder-like portion 12a, and the external air introduced from the external air inlet 13 can be removed from the body main body. It is possible to reliably circulate through the portion 12b. Note that a configuration in which the concave rib 15 is not provided may be adopted.

  As shown in FIG. 2, on the outer peripheral surface of the outer opening portion 11, an opening-side seal portion 16 is provided integrally between the outside air inlet 13 and the neck ring 14. The mouth-side seal portion 16 extends annularly over the entire periphery of the outer opening portion 11 and protrudes radially outward from the outer peripheral surface of the outer mouth portion 11 below the outside air inlet 13.

  As shown in FIG. 1, the inner container body 20 includes a cylindrical inner opening 21 that forms an inner portion of the cylindrical opening 2 a of the container body 2, and a housing unit that is integrally connected to a lower end of the inner opening 21. 22 and is disposed inside the outer container body 10.

  As shown in FIG. 2, the inner opening 21 has a smaller diameter than the outer opening 11, and is disposed coaxially with the outer opening 11 inside the outer opening 11. A predetermined gap 23 is provided between the inner peripheral surface of the outer opening 11 and the outer peripheral surface of the inner opening 21. The outside air introduction port 13 provided in the outside port 11 is open toward the gap 23. The upper end of the inner opening 21 is a cylindrical enlarged diameter portion 24, and the outer peripheral surface of the enlarged diameter portion 24 is in contact with the inner peripheral surface of the outer opening 11 over the entire circumference. As a result, the gap 23 between the outer opening 11 and the inner opening 21 is closed to the outside at the upper end of the outer opening 11 or the inner opening 21. An annular flange portion 25 extending radially outward is integrally provided at the upper end of the enlarged diameter portion 24, and the inner mouth portion 21 becomes the outer mouth portion when the flange portion 25 contacts the upper end of the outer mouth portion 11. 11 with respect to the axial direction.

  A screw portion 26 is integrally provided on the inner peripheral surface of the opening 2 a of the container body 2, that is, on the inner peripheral surface of the enlarged diameter portion 24 of the inner opening 21. The screw portion 26 is a female screw that protrudes radially inward from the inner peripheral surface of the enlarged diameter portion 24 and extends helically along the inner peripheral surface, and its cross-sectional shape faces radially inward. The tip has an acute triangular shape. In the present embodiment, the thread portion 26 is provided as a double thread, but the number of threads can be variously changed, for example, a single thread.

  As shown in FIG. 1, the housing portion 22 is formed in a bag shape having a smaller thickness and flexibility than the body portion 12, and is laminated on the inner surface of the body portion 12 so as to be peelable. The inside of the storage section 22 is a storage space S for contents, and the contents can be filled in the storage section 22 through the inner opening 21 and the contents stored in the storage section 22 through the inner opening 21. Can be discharged to the outside. The storage portion 22 is capable of volume reduction and deformation, and is capable of volume reduction deformation (deformation so as to reduce the internal volume) while being peeled off from the inner surface of the body portion 12 as the contents are poured out. The outside air is introduced between the outer container body 10 and the inner container body 20 from the outside air inlet 13 along with the volume reduction deformation of the storage section 22, thereby maintaining or restoring the body 12b to the original shape. As it is, only the housing portion 22 can be easily peeled off from the inner surface of the body portion 12 to reduce the volume.

  As shown in FIG. 2, a plurality of spacer ribs 27 are provided on the outer peripheral surface of the inner opening 21 in order to secure an air passage of the outside air from the outside air inlet 13 to between the body 12 and the housing 22. They are arranged side by side at intervals in the circumferential direction. The spacer rib 27 may be provided on the inner peripheral surface of the outer opening 11, or the spacer rib 27 may not be provided on either the outer opening 11 or the inner opening 21.

  Both the outer container body 10 and the inner container body 20 are made of polyethylene terephthalate resin (PET). That is, the container body 2 is made of polyethylene terephthalate resin. By making the container body 2 made of polyethylene terephthalate resin, the container body 2 can be made a lightweight, highly transparent, and highly recyclable container.

  The container body 2 having the above configuration is a blow molded product formed by blow molding the preform assembly 30 shown in FIG. The preform assembly 30 incorporates an inner preform 32 made of polyethylene terephthalate resin for forming the inner container body 20 inside an outer preform 31 made of polyethylene terephthalate resin for forming the outer container body 10. It has a double structure.

  The outer preform 31 is formed by injection-molding a polyethylene terephthalate resin using an injection mold so that the outer port 11 has the same shape as the outer port 11 of the outer container body 10, and is connected to the lower end of the outer port 11 to blow. It is formed in a substantially test tube shape having a bottomed cylindrical extending portion 31a which is extended by molding. Since the outer preform 31 has the outer opening 11 having the same shape as the outer container body 10, the same reference numerals as in FIG. I have.

  The inner preform 32 is formed by injection-molding polyethylene terephthalate resin using an injection mold so that the inner mouth 21 having substantially the same shape as the inner mouth 21 of the inner container 20 and the lower end of the inner mouth 21 are connected. It is formed in a substantially test tube shape having a bottomed cylindrical extending portion 32a that is extended by blow molding. In addition, since the inner preform 32 has the inner opening 21 having the same shape as the inner container body 20, each part constituting the inner opening 21 in the inner preform 32 is also given the same reference numeral as in FIG. I have.

  By blow molding the preform assembly 30 having such a configuration, the container body 2 shown in FIG. 1 can be easily formed. In the present embodiment, biaxial stretching blow molding is employed as blow molding.

  Next, the configuration of the discharge cap 3 will be described.

  As shown in FIG. 2, the discharge cap 3 includes a cap body 40 made of polypropylene resin. The cap body 40 is formed in a substantially cylindrical shape with a top having a top wall 41 and a cylindrical side wall 42 integrally connected to the outer peripheral edge of the top wall 41. 2a.

  A discharge port 43 for contents is integrally provided on the top wall 41. The discharge port 43 can discharge the contents stored in the storage space S of the inner container 20 to the outside. In the present embodiment, the discharge port 43 is formed in a cylindrical shape that outwardly curves while gradually increasing in diameter from the top wall 41 upward. Various changes can be made in accordance with the contents to be stored in the storage device and the use.

  The inner peripheral surface of the lower end side portion of the side wall 42 is in contact with the outer peripheral end of the mouth side seal portion 16 over the entire circumference. Thus, the space between the side wall 42 and the outer opening 11 is hermetically sealed from the outside. That is, the lower end portion of the side wall 42 of the cap body 40 is sealed from the outside.

  The top wall 41 is provided with a vent 44 for outside air. The ventilation port 44 communicates with the inside of the cap body 40, and the outside air can be taken into the inside of the cap body 40 from the outside through the ventilation port 44 and supplied to the outside air introduction port 13.

  The cap body 40 can be configured to integrally include the lid 50. The lid 50 is formed in a cylindrical shape with a top having substantially the same diameter as the cap body 40, and is connected to the cap body 40 via a hinge 51 at a part of the outer peripheral surface so as to be openable and closable. The lid 50 is provided with a cylindrical plug member 53 integrally on the inner surface of the top wall 52. When the lid 50 is in the closed position where the lid 50 covers the upper part of the cap body 40, the plug member 53 fits on the inner peripheral surface of the discharge port 43 and closes the discharge port 43. A cylindrical projection 54 that covers the outside of the plug member 53 is provided on the inner surface of the ceiling wall 52.

  The lid 50 covers the top wall 41 of the cap body 40 by engaging the locking groove 55 provided on the inner periphery of the opening edge with a projection provided on the outer periphery of the top wall 41 undercut engagement. Is held in the closed state. On the other hand, the lid 50 is opened by rotating about the hinge 51. When the lid 50 is in the open state, the plug member 53 is detached from the discharge port 43, and the discharge port 43 is opened so that the contents can be discharged.

  An inner plug 60 is mounted inside the cap body 40.

  The inner plug 60 has a closing wall 61 that is fixed to the cap body 40 and covers the opening of the mouth 2 a or the inner mouth 21. The closing wall 61 is formed in a substantially disk shape, and a cylindrical engaging wall 62 that rises upward is integrally provided on an outer peripheral edge thereof. The upper end of the engaging wall 62 abuts on the lower surface of the top wall 41 of the cap body 40, and the lower end is engaged by an engaging projection 45 provided on the inner peripheral surface of the side wall 42 of the cap body 40. As a result, the closing wall 61 is fixed to the cap body 40 in a state where a predetermined interval is provided between the closing wall 61 and the top wall 41 in the vertical direction via the engaging wall 62. The inner plug 60 is prevented from rotating with respect to the cap body 40 by a spline-shaped rotation preventing portion 63 provided between the side wall 42 and the engaging wall 62.

  The closing wall 61 is provided with an outflow hole 64 for the contents. The outflow hole 64 is connected to the discharge port 43 via a space between the closing wall 61 and the top wall 41, and allows the contents contained in the storage space S to flow toward the discharge port 43. .

  On the lower surface of the closing wall 61, a cylindrical tubular wall 65 protruding downward from the lower surface is integrally provided. The lower end side portion of the cylindrical wall 65 is a seal portion 65a. The seal portion 65a is liquid-tightly fitted over the entire outer periphery of the inner peripheral surface below the enlarged diameter portion 24 of the mouth 2a or the inner opening 21 on the outer peripheral surface.

  The inner plug 60 is preferably formed of a synthetic resin material softer than the inner container body 20. In the present embodiment, while the inner container body 20 is made of polyethylene terephthalate resin, the inner plug 60 is made of polypropylene resin. The inner plug 60 is not limited to being made of a polypropylene resin as long as it is a synthetic resin material softer than the inner container body 20, and may be made of, for example, polyethylene.

  A check valve 70 formed of a synthetic resin material, an elastomer, or the like is attached to the inner stopper 60. The check valve 70 includes a valve body 71, a plurality of legs 72, and a support wall 73. The valve body 71 is formed in a plate shape (disc shape), is disposed on the upper surface facing the top wall 41 side of the closing wall 61, and closes the outflow hole 64. The support wall 73 is formed in a cylindrical shape, is disposed between the top wall 41 and the closing wall 61, and is fitted and held by the top wall 41 and the closing wall 61. The plurality of legs 72 are each formed to be elastically deformable, and connect the valve body 71 and the support wall 73. In the present embodiment, the check valve 70 is a three-point valve in which the valve body 71 is supported on the support wall 73 by three legs 72. With such a configuration, the valve main body 71 moves in a direction approaching and separating from the upper surface of the closing wall 61, and allows the outflow of the contents from the storage space S to the discharge port 43 through the outflow hole 64. At the same time, the outflow hole 64 can be opened and closed so as to prevent the inflow of contents and outside air from the discharge port 43 through the outflow hole 64 to the storage space S. Therefore, after the contents are discharged, the outside air is prevented from flowing into the inner container body 20 from the discharge port 43 with the restoration of the trunk main body portion 12b, and is stored in the storage space S of the inner container body 20. Content can be made hard to contact with air, and the quality can be prevented from deteriorating.

  In the space between the top wall 41 and the closing wall 61, a portion inside the support wall 73 is partitioned into a liquid flow path, and a portion outside the support wall 73 is partitioned into a gas flow path. The gas flow path defined outside the support wall 73 is formed by a notch formed between the closing wall 61 and the engaging wall 62 and a gap between the side wall 42 and the outer opening 11. It communicates with the outside air inlet 13 through the air inlet.

  On the lower surface of the closing wall 61, a cylindrical valve body holding wall 66 extending toward the accommodation space S is provided integrally with the outlet hole 64 on the opposite side to the hinge 51. The valve body holding wall 66 has a shape whose diameter is reduced so that the inner diameter becomes narrower as the lower end is directed downward. Inside the valve body holding wall 66, a valve body 67 formed in a spherical shape (ball) by a steel material, a resin, or the like is vertically arranged. It is arranged movably.

  When the container body 2 is in the inclined position with the discharge port 43 facing downward, the valve body 67 directs the inside of the valve body holding wall 66 toward the discharge port 43 as shown by a two-dot chain line in FIG. Move. After the contents are poured out, when the container body 2 is returned to the upright posture such that the discharge port 43 faces upward, the valve body 67 reduces the diameter of the inside of the valve body holding wall 66 downward. The contents that have moved to the position where they contact the portion (the position indicated by the solid line in FIG. 2) and remain in the discharge port 43 are sucked toward the inside of the valve body holding wall 66. This makes it possible to reduce the remaining amount of the content remaining inside the discharge port 43 after the discharge of the content, and to prevent the content from dripping from the discharge port 43. That is, the valve body holding wall 66 and the valve body 67 function as a suck back mechanism.

  On the outer peripheral surface of the support wall 73 of the check valve 70, an air check valve 74 that opens and closes a flow path of the outside air between the ventilation port 44 and the outside air inlet 13 is provided integrally. The check valve 74 for air is formed in an umbrella shape, allows the flow of the outside air or air from the vent 44 to the outside air inlet 13 through the inside of the cap body 40, and also allows the air from the outside air inlet 13 to the cap body 40. Operable to block the flow of air to the vent 44 through the interior of the device. Therefore, when squeezing the body portion 12b of the container body 2 to discharge the contents, the air check valve 74 is closed to allow air to flow between the outer container body 10 and the inner container body 20. The contents can be easily pushed out from the inner container 20 while being held. Further, when the squeeze of the body portion 12b is released after the discharge of the contents, the check valve 74 for air is opened to allow the air between the outer container body 10 and the inner container body 20 to pass through the outside air introduction port 13 from the ventilation port 44. In this way, it is possible to easily restore the body portion 12b of the outer container body 10 to its original shape while reducing the volume of the inner container body 20 by introducing outside air into the inner container body 20.

  On the outer peripheral surface of a portion of the cylindrical wall 65 of the inner plug 60 that is located above the seal portion 65a and faces the inner peripheral surface of the enlarged diameter portion 24 of the inner opening 21 of the inner container body 20, A plurality of vertical ribs 68 are provided integrally at equal intervals in the circumferential direction. The plurality of vertical ribs 68 each protrude radially outward from the outer peripheral surface of the cylindrical wall 65 and extend along the up-down direction (vertical direction). The upper ends of the respective vertical ribs 68 are connected to the closing wall 61, and the lower ends of the respective vertical ribs 68 are gently inclined so that the protruding height gradually decreases.

  The diameter of the imaginary circle passing through the radially outer end portions of the plurality of vertical ribs 68 is the diameter of the imaginary circle passing through the radially inner end portion of the screw portion 26 formed on the inner peripheral surface of the inner opening 21. Is bigger than. Therefore, the tip portion of the screw portion 26 cuts into each of the plurality of vertical ribs 68. Portions of the plurality of vertical ribs 68 which the screw portions 26 bite into are bite portions 68a. When the screw portion 26 bites into each of the plurality of vertical ribs 68, the inner plug 60, that is, the discharge cap 3 is retained and held against the mouth 2 a of the container body 2.

  The discharge cap 3 having the cap body 40, the inner stopper 60, and the check valve 70 is attached to the mouth 2a of the container body 2 by tapping. When the discharge cap 3 is plugged into the mouth 2 a of the container body 2, a plurality of vertical ribs provided on the outer peripheral surface of the cylindrical wall 65 with the screw portion 26 provided on the inner peripheral surface of the inner opening 21. 68 is moved to a predetermined position while being sequentially elastically deformed downward from above. Then, as shown in FIG. 2, when the discharge cap 3 is plugged to a predetermined position of the mouth 2a, the screw portion 26 bites into the plurality of vertical ribs 68 to prevent the screw 2 from coming off the mouth 2a. The state is held. At this time, the biting portion 68a is transferred to the plurality of vertical ribs 68 bitten by the screw portion 26.

  In particular, in the present embodiment, since the inner plug 60 is made of a synthetic resin softer than the container main body 2, the screw portion 26 formed integrally with the inner opening 21 of the container main body 2 is connected to the inner plug 60. The vertical ribs 68 formed integrally can be reliably bitten.

  In the discharge container 1 of the present embodiment, the discharge cap 3 is attached to the mouth 2a of the container body 2 by stoppering, so that a high tamper-proof effect can be obtained. In particular, by covering the discharge cap 3 together with the container body 2 with a packaging material such as a shrink label, a higher unauthorized opening prevention effect can be obtained. On the other hand, in the discharge container 1 of the present embodiment, the screw cap 26 is provided on the inner peripheral surface of the inner opening 21 of the container body 2 while the discharge cap 3 is attached to the opening 2a of the container body 2 by stoppering. At the same time, a plurality of vertical ribs 68 are provided on the outer peripheral surface of the cylindrical wall 65 of the inner plug 60, and when the discharge cap 3 is plugged into the mouth 2a, the screw portion 26 is connected to the plurality of vertical ribs 68. Since the biting portions 68a are cut into the vertical ribs 68 and are transferred to the respective vertical ribs 68, the discharge cap 3 is moved to the opening of the container body 2 by a simple operation of simply rotating the discharging cap 3 relative to the opening 2a. 2a can be easily removed.

  That is, as shown in FIG. 2, when the discharge cap 3 is plugged into the mouth 2 a of the container body 2, the bite portion 68 a is transferred to the plurality of vertical ribs 68 by the screw portion 26 biting. Therefore, as shown in FIG. 4, when the discharge cap 3 is relatively rotated with respect to the mouth 2a from this state, the screw portion 26 relatively moves in the rotational direction along the bite portion 68a, and the inner plug 60 is moved. An upward pushing force is applied to the discharge cap 3 via the discharge cap 3. That is, the screw portion 26 bites into the plurality of vertical ribs 68 and the bite portion 68 a is transferred to the vertical rib 68, so that the discharge cap 3 is simply inserted into the mouth 2 a at the cylindrical wall 65 of the inner plug 60. In this state, the discharge cap 3 is relatively rotated with respect to the opening 2a by rotating the discharge cap 3 relative to the opening 2a in a direction to loosen the screw connection. You can push it up. Then, the discharge cap 3 is relatively rotated with respect to the mouth 2a until the screw portion 26 is detached from all the bite portions 68a, so that the engagement between the bite portion 68a and the screw portion 26 is released, and the discharge cap 3 Can be removed from the mouth 2a.

  As described above, according to the discharge container 1 of the present embodiment, the discharge cap 3 can be easily moved from the mouth 2a of the container body 2 by a simple operation of simply rotating the discharge cap 3 relative to the mouth 2a. Can be removed. Therefore, the ejection cap 3 can be easily removed from the mouth 2a of the container body 2 while the ejection cap 3 is configured to have a high tamper-proof effect attached to the mouth 2a of the container body 2 by stoppering. Thus, when the container body 2 is recycled, the operation of separating the discharge cap 3 from the container body 2 can be facilitated.

  In the discharge container 1 of the present embodiment, the screw portion 26 is provided on the inner peripheral surface of the inner opening 21 of the inner container 20, and a plurality of vertical ribs 68 are provided on the outer peripheral surface of the cylindrical wall 65. Therefore, the inner plug 60 is made of a synthetic resin material softer than the inner container 20, for example, while the inner container body 20 is made of polyethylene terephthalate resin and the inner plug 60 is made of polypropylene resin or polyethylene resin. Is easy.

  Further, in the discharge container 1 of the present embodiment, the gap between the side wall 42 and the mouth 2 a is sealed at the lower end of the cap body 40 by the mouth-side seal portion 16, and the vent provided on the top wall 41 of the cap body 40. Since outside air is introduced into the outside air inlet 13 through 44, the introduction of contents and foreign matter between the outer container 10 and the inner container 20 through the outside air inlet 13 is suppressed. When the object is discharged, the accommodating portion 22 of the inner container body 20 can be reliably separated from the body portion 12 of the outer container body 10.

  FIG. 5 is a modified example of the discharge container 1 shown in FIG. 1, and is a cross-sectional view illustrating a case where an outside air inlet 13 is provided between the outer opening 11 and the inner opening 21. In FIG. 5, members corresponding to those described above are denoted by the same reference numerals.

  In the discharge container 1 shown in FIG. 1, the outside air introduction port 13 is configured as a through-hole that penetrates the outside port 11 in the radial direction, but the outside air introduction port 13 is provided in the mouth 2 a of the container body 2. If provided, it may be provided between the upper end of the outer opening 11 and the upper end of the inner opening 21 as shown in FIG. In the illustrated case, the outside air inlet 13 is formed by a groove 80 having a predetermined width and extending over the inner peripheral surface and the upper end surface of the outer inner opening 11 of the outer container body 10. Note that a plurality of grooves 80 may be provided side by side at intervals in the circumferential direction of the outer opening 11.

  By providing the outside air inlet 13 between the upper end of the outer opening 11 and the upper end of the inner opening 21 as in this modification, as shown in FIG. As compared with the case where the introduction port 13 is provided, the height of the outer port 11 or the port 2a can be reduced.

  Moreover, the groove 80 can be formed in the outer opening 11 when the outer preform 31 forming the outer container body 10 is injection-molded with a synthetic resin material. The external air introduction port 13 can be easily provided in the opening 2a without providing the external air introduction port 13 in the portion 11. Therefore, the manufacturing cost of the discharge container 1 can be reduced.

  The groove 80 may be provided on the inner opening 21 side of the inner container 20, or may be provided on both the outer opening 11 and the inner opening 21.

  The present invention is not limited to the above embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the container body 2 is a laminated peeling container. However, the present invention is not limited thereto. For example, the inner container body 20 formed inside the outer container body 10 separately from the outer container body 10 may be used. Can be used as a double container.

  In the above embodiment, the inner container 20 is made of polyethylene terephthalate resin, and the inner plug 60 is made of polypropylene resin or polyethylene resin. However, the present invention is not limited to this, and the inner plug 60 is softer than the inner container 20. Can be made of other synthetic resin materials, respectively.

  Further, in the above-described embodiment, the plurality of vertical ribs 68 have a shape extending in the up-down direction (longitudinal direction). However, the present invention is not limited to this. Further, the vertical rib 68 may be provided with an intermittent portion for dividing the vertical rib 68 in the vertical direction.

  Further, the vertical rib 68 may be provided on the inner peripheral surface of the enlarged diameter portion 24 of the inner opening 21, and the screw portion 26 may be provided on the outer peripheral surface of the cylindrical wall 65. In this case, the screw portion 26 is formed as a male screw extending spirally.

  Further, in the above-described embodiment, the discharge container 1 has been described as being used for the purpose of accommodating a food seasoning such as soy sauce as a content (content liquid), but the content is, for example, a cosmetic such as a lotion. The present invention can also be applied to a discharge container used for storing various things such as shampoo, rinse, liquid soap or chemicals.

  Further, in the above-described embodiment, the outside air inlet 13 is provided at the outer opening 11 of the outer container body 10. However, the outside air inlet 13 may be provided at the inner opening 21 of the inner container 20. Good. In this case, the outside air inlet 13 is provided as a through hole in a portion between the inner opening 21 of the inner container 20 and the enlarged diameter portion 24, and the outer air inlet 13 is provided with the enlarged diameter portion 24 of the inner container 20. The space between the cylindrical wall 65, the ventilation opening provided in the closing wall 61 of the inner plug 60 by vertically penetrating the closing wall 61, and the space between the closing wall 61 and the top wall 41. It is preferable to communicate with the ventilation port 44 through the air hole.

DESCRIPTION OF SYMBOLS 1 Discharge container 2 Container main body 2a Mouth part 3 Discharge cap 10 Outer container body 11 Outer part 12 Body part 12a Shoulder-like part 12b Body part 12c Bottom part 13 External air introduction port 14 Neck ring 15 Concave rib 16 Mouth side seal part Reference Signs List 20 inner container 21 inner mouth 22 accommodating portion 23 gap 24 enlarged diameter portion 25 flange portion 26 screw portion 27 spacer rib 30 preform assembly 31 outer preform 31a extension portion 32 inner preform 32a extension portion 40 cap body 41 top wall 42 Side wall 43 Discharge port 44 Vent 45 Locking projection 50 Lid 51 Hinge 52 Top wall 53 Plug member 54 Cylindrical projection 55 Locking groove 60 Inner plug 61 Closing wall 62 Engaging wall 63 Detent part 64 Outflow hole 65 Tube -Shaped wall 65a Seal part 66 Valve body holding wall 67 Valve body 68 Vertical rib 68a Biting part 70 Check valve 71 Valve body 72 Leg part 73 Support 74 check valve 80 groove O axis S accommodation space for air

Claims (8)

An outer container body, having a volume-reducing and deformable inner container disposed inside the outer container body, a container body having a double structure in which an external air introduction port is provided in a cylindrical mouth,
A top wall having a discharge port for the contents, a cap body having a cylindrical side wall connected to the top wall, and covering the mouth;
A closing wall fixed to the cap body and covering the opening of the mouth, and a cylindrical wall provided with a seal portion fitted to the inner peripheral surface of the mouth, and the closing wall includes An inner plug provided with a continuous flow hole,
A check valve that opens and closes the flow hole so as to allow the flow of contents from the inside of the inner container body toward the discharge port through the flow hole,
A discharge container in which a discharge cap having the cap body, the inner plug and the check valve is attached to the mouth by a stopper,
A plurality of vertical ribs integrally provided on one of the inner peripheral surface of the mouth portion and the outer peripheral surface of the cylindrical wall, and projecting in the radial direction and extending in the vertical direction,
An inner peripheral surface of the mouth portion or an outer peripheral surface of the cylindrical wall is provided integrally with the other, and the discharge cap bites into a plurality of the vertical ribs, holds the discharge cap against the mouth portion, and holds the same. When the discharge cap is relatively rotated with respect to the mouth portion, a screw portion that relatively moves along a biting portion that has bitten into the plurality of vertical ribs and applies an upward pushing force to the discharge cap, A discharge container comprising: The screw portion is provided on an inner peripheral surface of a cylindrical inner opening portion of the inner container constituting the opening portion,
The discharge container according to claim 1, wherein a plurality of the vertical ribs are provided on an outer peripheral surface of the cylindrical wall.   The discharge container according to claim 2, wherein the inner plug is formed of a synthetic resin material softer than the inner container body.   The discharge container according to any one of claims 1 to 3, wherein the container body is made of polyethylene terephthalate resin.   The discharge container according to any one of claims 1 to 4, wherein the inner plug is made of a polypropylene resin or a polyethylene resin.   The discharge container according to any one of claims 1 to 5, wherein the outside air introduction port is provided so as to radially penetrate a cylindrical outer opening of the outer container body forming the opening. .   The outside air inlet is provided between a cylindrical outer opening of the outer container body forming the opening and a cylindrical inner opening of the inner container forming the opening. The discharge container according to claim 1. An annular port side provided on the outer peripheral surface of the port below the outside air introduction port and abutting over the entire inner peripheral surface of the side wall to seal between the side wall and the port. A seal part,
The discharge container according to any one of claims 1 to 7, further comprising an outside air vent provided on the top wall.

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