JP7039433B2 - Discharge container - Google Patents

Description

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

Conventionally, as a container for storing cosmetics such as lotion, shampoo, rinse, liquid soap, food seasoning, chemicals, etc. as contents, a double-structured container body having an outer container body and an inner container body, and a container body having a double structure. There is known a discharge container having a discharge cap attached to the mouth of the container body and discharging the contents from the discharge port provided in the discharge cap.

At the mouth of the container body of such a discharge container, an outside air introduction port for introducing outside air is provided between the outer container body and the inner container body. Further, inside the discharge cap, an inner plug having a distribution hole for the contents is fixed to the closing wall covering the opening of the mouth, 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 so as to allow the contents to flow out toward the discharge port through the flow hole. As a result, after the contents are discharged from the discharge port, the outside air is blocked between the outer container body and the inner container body through the outside air introduction port while blocking the inflow of the outside air from the discharge port to the inside of the inner container body by the check valve. Can be introduced to reduce the volume and deform only the inner container while keeping the outer container in its original shape. Therefore, it is possible to discharge the contents contained in the inner container body without replacing them with the outside air, make it difficult for the contents remaining inside the inner container body to come into contact with air, and suppress deterioration and deterioration thereof. can.

Further, as the discharge container as described above, the container is opened for the purpose of obtaining a higher effect of preventing unauthorized opening than the screw-on type discharge cap having a female screw portion engaged with the male screw portion provided on the outer peripheral surface of the mouth portion. It is known that a tapping type discharge cap that is difficult to be reattached later is adopted (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2018-1228060

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

On the other hand, even for such a discharge container, it is required to adopt a tapping type discharge cap in order to obtain a high effect of preventing unauthorized opening. However, since it is difficult to remove the plug-type discharge cap from the mouth, there is a problem that the work 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 in which a stoppered discharge cap can be easily removed from a mouth portion. ..

The discharge container of the present invention has an outer container body and a volume-reducing and deformable inner container body arranged inside the outer container body, and a double-layered container having an outside air introduction port provided in a tubular mouth portion. A container body having a structure, a top wall provided with a discharge port for contents, and a cap body having a tubular side wall connected to the top wall and covering the mouth portion, and the mouth fixed to the cap body. An inner plug having a closed wall covering the opening of the portion and a tubular wall having a sealing portion fitted to the inner peripheral surface of the mouth portion, and the closed wall provided with a flow hole connected to the discharge port. And 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 through the flow hole toward the discharge port, and has the cap body and the inner plug. And the discharge cap having the check valve is a discharge container attached to the mouth portion by tapping, and is integrally provided on either the inner peripheral surface of the mouth portion or the outer peripheral surface of the tubular wall. , Each of the plurality of vertical ribs protruding in the radial direction and extending in the vertical direction is integrally provided on either the inner peripheral surface of the mouth portion or the outer peripheral surface of the tubular wall, and the plurality of vertical ribs are integrally provided. The discharge cap is retracted and held with respect to the mouth portion, and when the discharge cap rotates relative to the mouth portion, it moves relative to the biting portion that bites into the plurality of vertical ribs. It is characterized by having a screw portion for applying an upward pushing force to the discharge cap.

In the above configuration, the discharge container of the present invention is provided with the screw portion on the inner peripheral surface of the tubular inner mouth portion of the inner container body constituting the mouth portion, and a plurality of the discharge containers are provided on the outer peripheral surface of the cylindrical wall. It is preferable that the vertical ribs of the above are provided.

In the discharge container of the present invention, in the above configuration, it is preferable that the inner plug is made of a synthetic resin material softer than the inner container body.

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

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

In the above configuration, the discharge container of the present invention is preferably provided with the outside air introduction port penetrating the tubular outer port portion of the outer container body constituting the mouth portion in the radial direction.

In the discharge container of the present invention, in the above configuration, the outside air introduction port is a tubular outer port portion of the outer container body constituting the mouth portion and a tubular inner port of the inner container body constituting the mouth portion. It is preferably provided between the mouth and the mouth.

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

According to the present invention, it is possible to provide a discharge container in which the stoppered discharge cap can be easily removed from the mouth portion.

It is a partial notch front view of the discharge container which is one Embodiment of this invention. It is an enlarged sectional view of the main part of the discharge container shown in FIG. It is a partial notch front view of a preform assembly. It is sectional drawing in the state which the discharge cap of the discharge container shown in FIG. 1 is rotated relative to the mouth portion. It is a modification of the discharge container shown in FIG. 1, and is the cross-sectional view which shows the case where the outside air introduction port is provided between the outer mouth part and the inner mouth part.

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

The discharge container 1 according to the embodiment of the present invention shown in FIGS. 1 and 2 is a squeeze type container used for storing food seasonings such as soy sauce as a content (content liquid). It includes a main body 2 and a discharge cap 3.

In the scope of the present specification and claims, as shown in FIG. 1, the vertical direction is up and down in a state where the discharge container 1 is in an upright posture in which the discharge cap 3 is located above the container body 2. It shall mean the direction. Further, the radial direction is assumed to mean a direction that passes through the axis O of the discharge container 1 and is along a straight line perpendicular to the axis O.

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

The outer container body 10 is a portion constituting the outer shell of the container body 2, a cylindrical outer mouth portion 11 constituting the outer shell portion of the cylindrical mouth portion 2a of the container body 2, and a lower end of the outer mouth portion 11. It has a bottle shape provided with a body portion 12 integrally connected to the body.

A plurality of outside air introduction ports 13 are provided in the outer port portion 11. Each of these outside air introduction ports 13 is a long hole-shaped through hole that penetrates the outer port portion 11 in the radial direction and extends in the circumferential direction. The plurality of outside air introduction ports 13 communicate with each other between the outer container body 10 and the inner container body 20, and the outside air is introduced between the outer container body 10 and the inner container body 20 through these outside air introduction ports 13. can do.

In the present embodiment, the outer port portion 11 is provided with a pair of outside air introduction ports 13 facing each other across the axis O, but if at least one outside air introduction port 13 is provided, the outside air introduction port 13 is provided. The number of outside air introduction ports 13 provided in the mouth portion 11 can be variously changed.

A neck ring 14 is integrally provided at the lower end of the outer opening portion 11. The neck ring 14 extends in an annular shape over the entire circumference of the outer opening portion 11 and projects outward from the outer peripheral surface of the outer opening portion 11 in the radial direction.

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

The body portion 12b has flexibility and can be elastically deformed by being squeezed (pressed) and dented inward in the radial direction, and from the dented state due to the elastic force to the original shape. You can restore it on your own. By making the body body portion 12b elastically deformable by squeezing, it is possible to easily perform the ejection operation of the contents, and the body body portion 12b can be easily returned to the original shape after the contents are ejected. By restoring to, the outside air is surely introduced through the outside air introduction port 13 between the outer container body 10 and the inner container body 20, and the container body 2 is surely exerted 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-shaped portion 12a so as to be arranged at equal intervals over the entire circumference in the circumferential direction. In FIG. 1, for convenience, only one concave rib 15 is designated with a reference numeral. By providing a plurality of concave ribs 15 on the shoulder-shaped portion 12a, the inner container body 20 can be easily separated from the outer container body 10 at the shoulder-shaped portion 12a, and the outside air introduced from the outside air introduction port 13 can be easily separated from the outer container body 10. It can be reliably distributed to the portion 12b. It should be noted that the concave rib 15 may not be provided.

As shown in FIG. 2, on the outer peripheral surface of the outer port portion 11, a mouth portion side seal portion 16 is integrally provided so as to be located between the outside air introduction port 13 and the neck ring 14. The mouth portion side seal portion 16 extends in an annular shape over the entire circumference of the outer mouth portion 11 and projects radially outward from the outer peripheral surface of the outer mouth portion 11 below the outside air introduction port 13.

As shown in FIG. 1, the inner container body 20 has a cylindrical inner mouth portion 21 constituting an inner portion of the cylindrical mouth portion 2a of the container body 2, and an accommodating portion integrally connected to the lower end of the inner mouth portion 21. 22 and is arranged inside the outer container body 10.

As shown in FIG. 2, the inner opening portion 21 has a smaller diameter than the outer opening portion 11, and is arranged coaxially with the outer opening portion 11 inside the outer opening portion 11. A gap 23 at a predetermined interval is provided between the inner peripheral surface of the outer opening portion 11 and the outer peripheral surface of the inner opening portion 21. The outside air introduction port 13 provided in the outer port portion 11 is open toward the gap 23. The upper end of the inner opening portion 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 portion 11 over the entire circumference. As a result, the gap 23 between the outer opening portion 11 and the inner opening portion 21 is closed to the outside at the upper end portion of the outer opening portion 11 or the inner opening portion 21. An annular flange portion 25 extending radially outward is integrally provided at the upper end of the enlarged diameter portion 24, and the flange portion 25 abuts on the upper end of the outer opening portion 11 so that the inner opening portion 21 becomes the outer opening portion. It is positioned axially with respect to 11.

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

As shown in FIG. 1, the accommodating portion 22 is formed in a bag shape that is thinner and more flexible than the body portion 12, and is detachably laminated on the inner surface of the body portion 12. The inside of the accommodating portion 22 is a storage space S for the contents, and the contents can be filled in the accommodating portion 22 through the inner opening portion 21 and the contents are accommodated in the accommodating portion 22 through the inner opening portion 21. Can be discharged to the outside. The accommodating portion 22 is freely deformable, and can be deformed (deformed 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. With the volume reduction deformation of the accommodating portion 22, outside air is introduced between the outer container body 10 and the inner container body 20 from the outside air introduction port 13, so that the body body portion 12b is maintained or restored to its original shape. As it is, only the accommodating portion 22 can be easily peeled off from the inner surface of the body portion 12 to reduce the volume and deform it.

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 for the outside air from the outside air introduction port 13 to the body portion 12 and the accommodating portion 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 portion 11, or the spacer rib 27 may be provided on neither the outer opening portion 11 nor the inner opening portion 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 into 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 20 inside the outer preform 31 made of polyethylene terephthalate resin for forming the outer container 10. It has a double structure.

The outer preform 31 is blown by injecting a polyethylene terephthalate resin using an injection molding die into an outer opening portion 11 having the same shape as the outer opening portion 11 of the outer container body 10 and a lower end of the outer opening portion 11. It is formed in a substantially test tube shape having a bottomed cylindrical stretched portion 31a stretched by molding. Since the outer preform 31 has an outer opening portion 11 having the same shape as the outer container body 10, each portion constituting the outer opening portion 11 of the outer preform 31 is also designated by the same reference numeral as in FIG. It is done.

The inner preform 32 is connected to the inner mouth portion 21 having substantially the same shape as the inner mouth portion 21 of the inner container body 20 and the lower end of the inner mouth portion 21 by injection molding a polyethylene terephthalate resin using an injection molding mold. It is formed in a substantially test tube shape having a bottomed cylindrical stretched portion 32a stretched by blow molding. Since the inner preform 32 has an inner mouth portion 21 having the same shape as the inner container body 20, each portion constituting the inner mouth portion 21 of the inner preform 32 is also designated by the same reference numeral as in FIG. It is done.

By blow molding the preform assembly 30 having such a configuration, the container body 2 shown in FIG. 1 can be easily formed. In this embodiment, biaxial stretch blow molding is adopted 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 ecstatic cylindrical shape including a top wall 41 and a cylindrical side wall 42 integrally connected to the outer peripheral edge of the top wall 41, and is attached to the mouth portion 2a to form a mouth portion. It covers 2a.

The top wall 41 is integrally provided with a discharge port 43 for the contents. The discharge port 43 can discharge the contents stored in the storage space S of the inner container body 20 to the outside. In the present embodiment, the discharge port 43 is formed in a cylindrical shape that curves outward while gradually increasing in diameter from the top wall 41 upward, but the shape and size thereof are the accommodation space S. It can be changed in various ways depending on the contents and usage of the container.

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 portion side sealing portion 16 over the entire circumference. As a result, the side wall 42 and the outer opening 11 are hermetically sealed to the outside. That is, the lower end portion of the side wall 42 of the cap body 40 is sealed to the outside.

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

The cap body 40 can be configured to integrally include the lid body 50. The lid 50 is formed in a ridged cylinder having substantially the same diameter as the cap body 40, and is openably and closably connected to the cap body 40 via a hinge 51 on a part of the outer peripheral surface. The lid 50 is integrally provided with a tubular plug member 53 on the inner surface of the top wall 52. When the lid 50 is in the closed position covering the upper part of the cap body 40, the plug member 53 fits into the inner peripheral surface of the discharge port 43 and closes the discharge port 43. Further, on the inner surface of the top wall 52, a cylindrical protrusion 54 that covers the outside of the plug member 53 is provided.

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

An inner plug 60 is attached to the inside of the cap body 40.

The inner plug 60 has a closing wall 61 fixed to the cap body 40 and covering the opening of the mouth portion 2a to the inner mouth portion 21. The closed wall 61 is formed in a substantially disk shape, and a cylindrical engaging wall 62 that stands up upward is integrally provided on the outer peripheral edge thereof. The upper end of the engaging wall 62 is in contact with the lower surface of the top wall 41 of the cap body 40, and the lower end is locked to the locking 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 via the engaging wall 62 in a state where a predetermined distance is provided in the vertical direction between the closing wall 61 and the top wall 41. Further, the inner plug 60 is prevented from rotating with respect to the cap body 40 by a spline-shaped detent portion 63 provided between the side wall 42 and the engaging wall 62.

The closed wall 61 is provided with an outflow hole 64 for the contents. The outflow hole 64 is connected to the discharge port 43 through the space between the closed wall 61 and the top wall 41, and the contents contained in the accommodation space S can be discharged toward the discharge port 43. ..

On the lower surface of the closed wall 61, a cylindrical tubular wall 65 that projects downward from the lower surface is integrally provided. The lower end side portion of the tubular wall 65 is a seal portion 65a. The seal portion 65a is liquid-tightly fitted to the inner peripheral surface of the outer peripheral surface thereof below the enlarged diameter portion 24 of the mouth portion 2a to the inner mouth portion 21 over the entire circumference.

The inner plug 60 is preferably made of a synthetic resin material that is softer than the inner container body 20. In the present embodiment, the inner container 20 is made of polyethylene terephthalate resin, while the inner plug 60 is made of polypropylene resin. The inner plug 60 is not limited to the 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 plug 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 (disk shape) and is arranged on the upper surface of the closing wall 61 facing the top wall 41 to close the outflow hole 64. The support wall 73 is formed in a cylindrical shape and is arranged between the top wall 41 and the closing wall 61, and is fitted and held in the top wall 41 and the closing wall 61. The plurality of legs 72 are formed so as 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 by the support wall 73 by the three legs 72. With such a configuration, the valve main body 71 moves in a direction of approaching and separating from the upper surface of the closing wall 61, and allows the contents to flow out from the accommodation space S through the outflow hole 64 toward the discharge port 43. At the same time, the outflow hole 64 can be opened and closed so as to prevent the inflow of the contents and the outside air from the discharge port 43 through the outflow hole 64 toward the accommodation 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 due to the restoration of the body body portion 12b, and the contents are accommodated in the accommodation space S of the inner container body 20. It is possible to make it difficult for the contents to come into contact with the air and suppress the deterioration of their quality.

The space between the top wall 41 and the closed wall 61 is divided into a liquid flow path inside the support wall 73 and a gas flow path outside the support wall 73. The gas flow path defined outside the support wall 73 has a notch formed over the closing wall 61 and the engaging wall 62, and a gap between the side wall 42 and the outer opening portion 11. It communicates with the outside air introduction port 13 via the outside air introduction port 13.

On the lower surface of the closed wall 61, a cylindrical valve body holding wall 66 located on the opposite side of the outflow hole 64 from the hinge 51 and extending toward the accommodation space S is integrally provided. The valve body holding wall 66 has a shape in which the inner diameter is reduced so that the inner diameter becomes narrower toward the lower end, and inside the valve body holding wall 66, a valve body 67 formed in a spherical shape (ball) made of steel or resin is formed in the vertical direction. It is arranged so that it can be moved.

When the container body 2 is in an inclined posture with the discharge port 43 facing downward, the valve body 67 faces the inside of the valve body holding wall 66 toward the discharge port 43 as shown by a two-dot chain line in FIG. And move. Then, after the contents are poured out, when the container body 2 is returned to the upright posture so that the discharge port 43 faces upward, the valve body 67 has a reduced diameter with the inside of the valve body holding wall 66 facing downward. It moves to a position where it abuts on the portion (position shown by a solid line in FIG. 2), and the contents remaining in the discharge port 43 are sucked toward the inside of the valve body holding wall 66. As a result, after the contents are discharged, the remaining amount of the contents remaining inside the discharge port 43 can be reduced, and the contents can be prevented from dripping from the discharge port 43. That is, the valve body holding wall 66 and the valve body 67 function as a suckback mechanism.

An air check valve 74 that opens and closes the flow path of the outside air between the ventilation port 44 and the outside air introduction port 13 is integrally provided on the outer peripheral surface of the support wall 73 of the check valve 70. The check valve 74 for air is formed in an umbrella shape and allows the flow of outside air or air from the ventilation port 44 to the outside air introduction port 13 through the inside of the cap body 40, and also allows the flow of outside air or air from the outside air introduction port 13 to the cap body 40. Acts to block the flow of air to the vent 44 through the interior of the. Therefore, when the body body portion 12b of the container body 2 is squeezed to discharge the contents, the air check valve 74 closes 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 body 20 while being held. Further, when the squeeze of the body body portion 12b is released after the contents are discharged, the air check valve 74 opens, and the space between the outer container body 10 and the inner container body 20 is opened from the vent 44 through the outside air introduction port 13. The body body portion 12b of the outer container body 10 can be easily restored to the original shape while the inner container body 20 is reduced in volume and deformed so that the outside air is introduced into the outer container body 10.

The outer peripheral surface of the tubular wall 65 of the inner plug 60, which is above the seal portion 65a and faces the inner peripheral surface of the enlarged diameter portion 24 of the inner mouth portion 21 of the inner container body 20, is formed on the outer peripheral surface. A plurality of vertical ribs 68 are arranged integrally at equal intervals in the circumferential direction. Each of the plurality of vertical ribs 68 protrudes outward in the radial direction from the outer peripheral surface of the tubular wall 65 and extends in the vertical direction (vertical direction). Further, the upper end of each vertical rib 68 is connected to the closing wall 61, and the lower end of each vertical rib 68 is gently inclined so that the protruding height gradually decreases.

The diameter of the virtual circle passing through the distal end portion of the plurality of vertical ribs 68 on the radial outer side is the diameter of the virtual circle passing through the radial inner tip portion of the threaded portion 26 formed on the inner peripheral surface of the inner opening portion 21. Is bigger than. Therefore, the tip portion of the screw portion 26 bites into each of the plurality of vertical ribs 68. The portion where the threaded portions 26 of the plurality of vertical ribs 68 bite into is the biting portion 68a. The threaded portion 26 bites into each of the plurality of vertical ribs 68, so that the inner plug 60, that is, the discharge cap 3 is held in place with respect to the mouth portion 2a of the container body 2.

The discharge cap 3 having the cap body 40, the inner plug 60, and the check valve 70 is attached to the mouth portion 2a of the container body 2 by tapping. When the discharge cap 3 is plugged into the mouth portion 2a of the container body 2, the screw portion 26 provided on the inner peripheral surface of the inner mouth portion 21 has a plurality of vertical ribs provided on the outer peripheral surface of the tubular wall 65. The 68 is moved to a predetermined position while being elastically deformed sequentially from the upper side to the lower side. Then, as shown in FIG. 2, when the discharge cap 3 is plugged to a predetermined position of the mouth portion 2a, the screw portion 26 is in a state of biting into the plurality of vertical ribs 68 and is prevented from coming off by the mouth portion 2a. It will be in a held state. At this time, the biting portion 68a is transferred to the plurality of vertical ribs 68 in which the screw portion 26 bites.

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 integrally formed with the inner opening portion 21 of the container main body 2 is referred to as the inner plug 60. It can be surely bitten into the integrally formed vertical rib 68.

In the discharge container 1 of the present embodiment, since the discharge cap 3 is attached to the mouth portion 2a of the container body 2 by tapping, a high effect of preventing unauthorized opening 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 effect of preventing unauthorized opening can be obtained. On the other hand, in the discharge container 1 of the present embodiment, the discharge cap 3 is attached to the mouth portion 2a of the container body 2 by tapping, and the screw portion 26 is provided on the inner peripheral surface of the inner mouth portion 21 of the container body 2. In addition, a plurality of vertical ribs 68 are provided on the outer peripheral surface of the tubular wall 65 of the inner plug 60, and when the discharge cap 3 is plugged into the mouth portion 2a, the screw portion 26 is provided on the plurality of vertical ribs 68. Since the bite portion 68a is transferred to each of the vertical ribs 68 by biting into the container, the discharge cap 3 can be moved to the mouth portion of the container body 2 by a simple operation of rotating the discharge cap 3 relative to the mouth portion 2a. It can be easily removed from 2a.

That is, as shown in FIG. 2, in a state where the discharge cap 3 is plugged into the mouth portion 2a of the container body 2, the biting portion 68a is transferred to the plurality of vertical ribs 68 by the screw portion 26 biting into the mouth portion 2a. Therefore, as shown in FIG. 4, when the discharge cap 3 is rotated relative to the mouth portion 2a from this state, the screw portion 26 moves relative to the biting portion 68a in the rotational direction, and the inner plug 60 is closed. An upward pushing force is applied to the discharge cap 3 through the discharge cap 3. That is, the threaded portion 26 bites into the plurality of vertical ribs 68 and the biting portion 68a is transferred to the vertical ribs 68, so that the discharge cap 3 is simply inserted into the mouth portion 2a at the portion of the tubular wall 65 of the inner plug 60. On the other hand, since the screw-coupled state is obtained, the discharge cap 3 is rotated relative to the mouth portion 2a in the direction of loosening the screw connection, so that the discharge cap 3 is directed upward relative to the mouth portion 2a. Can be pushed up. Then, by rotating the discharge cap 3 relative to the mouth portion 2a until the screw portion 26 is separated from all the bite portions 68a, the engagement between the bite portion 68a and the screw portion 26 is released, and the discharge cap 3 is released. 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 rotating the discharge cap 3 relative to the mouth 2a. Can be removed. Therefore, the discharge cap 3 can be easily removed from the mouth portion 2a of the container body 2 while having a structure having a high effect of preventing unauthorized opening, which is attached to the mouth portion 2a of the container body 2 by tapping. Therefore, it is possible to facilitate the work of separating the discharge cap 3 from the container body 2 when recycling the container body 2.

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

Further, in the discharge container 1 of the present embodiment, the side wall 42 and the mouth 2a are sealed at the lower end of the cap body 40 by the mouth side sealing portion 16, and the vent is provided on the top wall 41 of the cap body 40. Since the outside air is introduced into the outside air introduction port 13 through the 44, the contents and foreign matters are suppressed from being introduced between the outer container body 10 and the inner container body 20 through the outside air introduction port 13. When an object is discharged, the accommodating portion 22 of the inner container body 20 can be reliably peeled off 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 showing a case where the outside air introduction port 13 is provided between the outer port portion 11 and the inner port portion 21. In FIG. 5, the members corresponding to the above-mentioned members are designated 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 outer port portion 11 in the radial direction, but the outside air introduction port 13 is formed in the mouth portion 2a of the container main body 2. If it is provided, as shown in FIG. 5, it may be provided between the upper end of the outer opening portion 11 and the upper end of the inner opening portion 21. In the case shown in the figure, the outside air introduction port 13 is formed by a groove portion 80 having a predetermined width provided extending over the inner peripheral surface and the upper end surface of the outer inner port portion 11 of the outer container body 10. A plurality of groove portions 80 may be provided side by side at intervals in the circumferential direction of the outer opening portion 11.

As in this modification, by providing the outside air introduction port 13 between the upper end of the outer port portion 11 and the upper end of the inner port portion 21, as shown in FIG. 1, the outside air is provided as a through hole in the outer port portion 11. The height of the outer opening portion 11 or the opening portion 2a can be lowered as compared with the case where the introduction port 13 is provided.

Further, since the groove portion 80 can be formed in the outer opening portion 11 when the outer preform 31 forming the outer container body 10 is injection-molded with the synthetic resin material, the outer opening portion 80 is subjected to post-processing such as drilling. The outside air introduction port 13 can be easily provided in the mouth portion 2a without providing the outside air introduction port 13 in the portion 11. Therefore, the manufacturing cost of the discharge container 1 can be reduced.

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

It goes without saying that the present invention is not limited to the above-described embodiment and can be variously modified without departing from the gist thereof.

For example, in the above-described embodiment, the container body 2 is a laminated peeling container, but the present invention is not limited to this, for example, the inner container body 20 formed inside the outer container body 10 separately from the outer container body 10. It can also be a double container that incorporates.

Further, in the above embodiment, the inner container body 20 is made of polyethylene terephthalate resin, and the inner plug 60 is made of polypropylene resin or polyethylene resin, but the inner plug 60 is not limited to this, and the inner plug 60 is softer than the inner container body 20. If it is made of the synthetic resin material of the above, it can also be made of another synthetic resin material.

Further, in the above-described embodiment, the plurality of vertical ribs 68 have a shape extending in the vertical direction (vertical direction), but the shape is not limited to this, and the shape may be inclined and extended in the vertical direction. Further, the vertical rib 68 may be configured to include an intermittent portion that divides 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 portion 21, and the threaded portion 26 may be provided on the outer peripheral surface of the tubular wall 65. In this case, the threaded portion 26 is formed into a spirally extending male thread.

Further, in the above-described embodiment, the discharge container 1 is exemplified 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, conditioner, liquid soap or chemicals.

Further, in the above embodiment, the outside air introduction port 13 is provided in the outer port portion 11 of the outer container body 10, but the outside air introduction port 13 may be provided in the inner port portion 21 of the inner container body 20. good. In this case, the outside air introduction port 13 is provided as a through hole in the portion between the inner port portion 21 of the inner container body 20 and the diameter-expanded portion 24, and the outside air introduction port 13 is provided with the diameter-expanded portion 24 of the inner container body 20. A space between the tubular wall 65, a ventilation opening provided in the closed wall 61 of the inner plug 60 so as to penetrate the closed wall 61 up and down, and a space between the closed wall 61 and the top wall 41. It is preferable to communicate with the vent 44 through the vent 44.

1 Discharge container 2 Container body 2a Mouth part 3 Discharge cap 10 Outer container body 11 Outer mouth part 12 Body part 12a Shoulder part 12b Body part 12c Bottom part 13 Outside air introduction port 14 Neck ring 15 Concave rib 16 Mouth side seal part 20 Inner container body 21 Inner mouth 22 Accommodating part 23 Gap 24 Enlarged part 25 Flange part 26 Threaded part 27 Spacer rib 30 Preform assembly 31 Outer preform 31a Extension part 32 Inner preform 32a Extension part 40 Cap body 41 Top wall 42 Side wall 43 Discharge port 44 Vent 45 Locking protrusion 50 Lid 51 Hinge 52 Top wall 53 Plug member 54 Cylindrical protrusion 55 Locking groove 60 Inner plug 61 Closing wall 62 Engagement wall 63 Anti-rotation part 64 Outflow hole 65 Cylinder 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 73 Support wall 74 Check valve for air 80 Groove O Axis center S Accommodation space

Claims (8)

A double-structured container body having an outer container body and a volume-reducing and deformable inner container body arranged inside the outer container body, and an outside air introduction port provided in a cylindrical mouth portion, and a container body having a double structure.
A cap body having a top wall provided with a discharge port for contents and a cylindrical side wall connected to the top wall and covering the mouth portion.
It has a closing wall fixed to the cap body and covering the opening of the mouth portion, and a tubular wall having a sealing portion fitted to the inner peripheral surface of the mouth portion, and the closing wall has the discharge port. An inner plug with a continuous distribution hole and
It has 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 through the flow hole toward the discharge port.
A discharge container in which the cap body, the inner plug, and the discharge cap having the check valve are attached to the mouth by tapping.
A plurality of vertical ribs integrally provided on either the inner peripheral surface of the mouth portion or the outer peripheral surface of the tubular wall, each of which protrudes in the radial direction and extends in the vertical direction.
It is integrally provided on either the inner peripheral surface of the mouth portion or the outer peripheral surface of the tubular wall, and bites into the plurality of vertical ribs to hold the discharge cap with respect to the mouth portion. When the discharge cap rotates relative to the mouth portion, the screw portion that moves relative to the bite portion that bites into the plurality of vertical ribs and applies an upward pushing force to the discharge cap. Discharge container characterized by having. The threaded portion is provided on the inner peripheral surface of the cylindrical inner mouth portion of the inner container body constituting the mouth portion.
The discharge container according to claim 1, wherein a plurality of the vertical ribs are provided on the outer peripheral surface of the tubular wall. The discharge container according to claim 2, wherein the inner plug is made 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 polypropylene resin or 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 penetrate the tubular outer port portion of the outer container body constituting the mouth portion in the radial direction. .. The outside air introduction port is provided between the tubular outer mouth portion of the outer container body constituting the mouth portion and the tubular inner mouth portion of the inner container body constituting the mouth portion. The discharge container according to any one of claims 1 to 5. An annular mouth portion side that is provided on the outer peripheral surface of the mouth portion below the outside air introduction port, abuts on the inner peripheral surface of the side wall over the entire circumference, and seals between the side wall and the mouth portion. Seal part and
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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