JP2020055563A - 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 storing a content; and a discharge cap 3 having a discharge port 44 for the content, and capable of being attached to and detached from a mouth (outer mouth 11) of the container body 2. In the discharge container 1, an outer peripheral surface of the mouth is provided with a male screw part 18, and a mouth side engagement part 16 formed below the male screw part 18 and projecting outward in a radial direction, whereas, an inner peripheral surface of a side wall part 42 of the discharge cap 3 enclosing the mouth from the outside in the radial direction is provided with a female screw part 48 engageable with the male screw part 18 by screwing, and a cap side engagement part 43 disposed below the female screw part 48, and protruding inward in the radial direction to be engageable with the port side engagement part 16 by undercutting. One part of either the male screw part 18 and the female screw part 48 is provided as a continuous screw part continuing in a circumferential direction, and the other part is provided as an intermittent screw part formed intermittently in the circumferential direction.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a discharge container including a 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 medicine as contents, a container body for storing the contents, and a discharge attached to the mouth of the container body. 2. Description of the Related Art A discharge container that includes a cap and discharges contents from a discharge port provided in the discharge cap is known.

  As such a discharge container, a plug-type discharge cap that has a second engagement portion that engages undercut engagement with the first engagement portion provided on the outer peripheral surface of the mouth portion and that is difficult to remove from the container body is employed. The following is known (for example, see Patent Document 1).

JP 2018-122860 A

  However, in the case of a discharge container in which the container body and the discharge cap are made of different materials, such as a case in which a discharge cap made of polypropylene or polyethylene is attached to the mouth of the container body made of polyethylene terephthalate, the container is re-used after use. For the purpose of use or proper disposal, it is required to remove the discharge cap from the container body and separate it.

  An object of the present disclosure is to solve such a problem, and an object of the present disclosure is to provide a discharge container that can easily remove a stoppered discharge cap from an opening of a container body. It is in.

Discharge container of the present disclosure,
A container body for storing the contents,
A discharge container comprising a discharge port for contents, and a discharge cap detachable at a mouth of the container body,
On the outer peripheral surface of the mouth portion, a male thread portion, and a mouth side engaging portion formed below the male thread portion and protruding radially outward are provided,
On the inner peripheral surface of the side wall portion of the discharge cap surrounding the mouth portion from the radial outside, a female screw portion engageable with the male screw portion, and formed below the female screw portion to protrude radially inward. A cap-side engaging portion capable of undercut engagement is provided in the mouth-side engaging portion,
One of the male screw portion and the female screw portion is provided as a continuous screw portion continuous in the circumferential direction, and the other is provided as an intermittent screw portion formed intermittently in the circumferential direction.

  Further, in the discharge container of the present disclosure, in the above configuration, the container main body includes an outer layer body and an inner layer body that accommodates contents arranged inside the outer layer body, and the outer layer body and the inner layer body. It is preferable to have an outside air introduction port for introducing outside air into the space between them.

  Further, in the discharge container of the present disclosure, in the above configuration, it is preferable that the outside air introduction port is formed between an upper end of the outer layer body and an upper end of the inner layer body.

  Further, in the discharge container of the present disclosure, in the above configuration, it is preferable that the male screw portion and the female screw portion include a multi-threaded portion.

  According to the present disclosure, it is possible to provide a discharge container capable of easily removing a plugged discharge cap from an opening of a container body.

FIG. 1 is a partial front sectional view of a discharge container according to an embodiment of the present disclosure. It is an expanded sectional view of the principal part of the discharge container shown in FIG. It is an enlarged front view of the mouth part of the container main body shown in FIG. FIG. 2 is an enlarged plan view of a mouth of the container body shown in FIG. 1. FIG. 2 is a development view of a female screw portion provided in the discharge cap shown in FIG. 1. FIG. 3 is a partial front sectional view of the preform assembly. FIG. 2 is an enlarged front sectional view showing a process of removing a discharge cap from a container body in the discharge container shown in FIG. 1.

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

  As shown in FIG. 1, the discharge container 1 of the present embodiment is a squeeze type used for the purpose of containing a food seasoning such as soy sauce, a cosmetic, or the like 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. 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 is also called a laminated peeling container or a double container, and has an outer layer body 10 and an inner layer body 20 housed inside the outer layer body 10, and the inner layer body is discharged according to the discharge of the contents (content liquid). The body 20 has a double structure in which the volume is deformed independently of the outer layer body 10.

  The outer layer body 10 is a part constituting the outer shell of the container body 2, and has a bottle-like shape having a cylindrical outer opening 11 and a bottomed cylindrical body 12 integrally connected to the lower end of the outer opening 11. It has become.

  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 portion 12b integrally connected to the lower end of 12a, and a bottom portion 12c for closing the lower end of the trunk body portion 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. By allowing the container body 2 to function as a laminated peeling container or a double container, the outside air is reliably introduced into the container body 2 between the outer layer body 10 and the inner layer body 20 through an outside air inlet 13 described later. It can be surely demonstrated.

  As shown in FIG. 1, the inner layer body 20 has an inner opening 21 and a housing 22.

  As shown in FIG. 2, the inner opening 21 has a cylindrical shape with a smaller diameter than the outer opening 11, and is arranged coaxially with the outer opening 11 inside the outer opening 11. The outer opening 11 and the inner opening 21 constitute an opening of the container body 2.

  As shown in FIG. 2, a plurality of outside air inlets 13 are provided between the upper end of the outer opening 11 and the upper end of the inner opening 21. In the case shown in the drawing, the outside air inlet 13 is formed by a groove 70 having a predetermined width provided to extend over the outer peripheral surface of the enlarged diameter portion 24 of the inner opening 21 of the inner layer body 20 and the lower surface of the flange 25. I have. Note that a plurality of grooves 70 may be provided in the circumferential direction of the mouth of the container body 2.

  With such a configuration, it is possible to provide the external thread portion 18 on the outer peripheral surface of the outer opening portion 11 without considering interference with the outside air inlet 13, and to arrange the external thread portion 18 on the outer peripheral surface of the outer opening portion 11. In addition, it is not necessary to provide a through-hole that penetrates the outer opening 11 in the radial direction, the formation of the outer layer body 10 is facilitated, and the manufacturing cost of the discharge container 1 can be reduced.

  The groove 70 is provided on the inner peripheral surface and the upper end surface of the outer opening 11 of the outer layer body 10 instead of the outer peripheral surface of the enlarged diameter portion 24 of the inner opening 21 of the inner layer body 20 and the lower surface of the flange 25. It may be provided on the inner peripheral surface and the upper end surface of the outer opening 11 of the outer layer body 10 in addition to the outer peripheral surface of the enlarged diameter portion 24 of the inner opening 21 of the inner layer body 20 and the lower surface of the flange 25. It may be.

  The outside air inlet 13 may be configured as a through-hole that passes through the outside port 11 in the radial direction.

  In addition, as long as at least one outside air inlet 13 is provided, the number thereof can be arbitrarily set.

  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. A cylindrical enlarged-diameter portion 24 is provided integrally at the upper end of the inner opening 21, and the outer peripheral surface of the enlarged-diameter portion 24 contacts the inner peripheral surface of the outer opening 11 at the groove 70. The inner opening 21 and the outer opening 11 are positioned in the radial direction. The gap 23 between the outer opening 11 and the inner opening 21 communicates with the outside through the outside air inlet 13 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.

  As shown in FIG. 1, the accommodating portion 22 is formed in a bag shape thinner than the body portion 12, is integrally connected to the lower end of the inner opening portion 21, and is laminated so as to be capable of reducing the volume independently from the inner surface of the body portion 12. Have been. 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 accommodating portion 22 is capable of volume reduction and deformation, and is reduced in volume while being separated from the inner surface of the body 12 (deformation so as to reduce the internal volume) with the restoring deformation of the body 12 after the contents are poured out. )can do. Specifically, the outside air is introduced between the outer layer body 10 and the inner layer body 20 from the outside air inlet 13 in a state where the volume of the storage portion 22 is reduced due to the decrease in the content, and the trunk body portion 12b Is restored and deformed.

  As shown in FIG. 2, a vertical rib 26 is integrally provided on the outer surface of the inner layer body 20 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. ing. Although not shown in detail, in the container body 2 of the present embodiment, a plurality of vertical ribs 26 are arranged on the outer surface of the inner layer body 20 at intervals in the circumferential direction so as to correspond to the respective outside air introduction ports 13. Is provided. Each of the vertical ribs 26 protrudes radially outward from the outer surface of the inner layer body 20 and extends in a direction along the axis O from the inner opening 21 to the accommodating part 22, and the outer layer body 10 and the inner layer body 20 An air passage for the outside air is formed between the outside air inlet 13 and the neck ring 14 to reach the portion between the shoulder portion 12a and the housing portion 22 therebetween. Thereby, the ventilation path of the outside air introduced from the outside air introduction port 13 can be reliably introduced between the shoulder-like portion 12a and the accommodating portion 22.

  The vertical rib 26 may be provided on the inner peripheral surface of the outer opening 11. Furthermore, it is sufficient that the gap 23 can be secured between the outer opening 11 and the inner opening 21, and a configuration in which the vertical rib 26 is not provided in any of the outer opening 11 and the inner opening 21 may be adopted. Further, even if there is no gap 23 at the time of molding, the gap may be opened at the time of introducing outside air.

  As shown in FIG. 2, on the outer peripheral surface of the outer opening portion 11, a mouth side engaging portion 16 for retaining and holding the discharge cap 3 is provided integrally. The mouth-side engaging portion 16 extends in an annular shape over the entire circumference of the outer mouth portion 11, and extends radially outward from the outer peripheral surface of the outer mouth portion 11 below the male screw portion 18 described below. It is protruding.

  In the present embodiment, the mouth side engaging portion 16 also serves as the mouth side sealing portion 17. The mouth-side seal portion 17 may be provided at the upper end of the outer peripheral surface of the outer mouth portion 11, that is, above the male screw portion 18. The mouth-side seal portion 17 may be provided so as to protrude below the mouth-side engagement portion 16, for example, radially outward.

  As shown in FIG. 2, a male screw portion 18 is provided integrally on the outer peripheral surface of the outer opening 11. The male screw portion 18 protrudes radially outward from the outer peripheral surface of the outer opening 11. The male screw portion 18 is provided intermittently in the circumferential direction as shown in FIGS. 3 and 4, and forms a four-thread screw together with the female screw portion 48 on the cap body 40 side. The number and width of the intermittent portions of the male screw portion 18 can be appropriately designed, and may be provided uniformly or unequally in the circumferential direction. FIG. 5 is a view in which the female screw portion 48 on the side of the cap body 40 is developed on a plane, and the horizontal axis in FIG. 5 indicates the circumferential position by an angle. As shown in FIG. 5, the female screw portion 48 has a continuous thread in the circumferential direction. As shown in the drawing, the four-thread screw is configured such that the screw portion advances four pitches per rotation. .

  The outer layer body 10 and the inner layer body 20 are both made of polyethylene terephthalate resin (PET). Since the outer layer body 10 and the inner layer body 20 are each made of polyethylene terephthalate resin, the container body 2 can be made a lightweight, highly transparent container having high sorting workability.

  The container main 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 is a double preform in which an inner preform 32 made of polyethylene terephthalate resin for forming the inner layer body 20 is incorporated inside an outer preform 31 made of polyethylene terephthalate resin for forming the outer layer body 10. It has a structure.

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

  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 layer body 20 and the lower end of the inner mouth 21 are blown. It is formed in a substantially test tube shape having a bottomed cylindrical extension 32a which is extended by molding. In addition, since the inner preform 32 has the inner opening 21 having the same shape as the inner layer body 20, the same reference numerals as those in FIG. It is.

  By blow molding the preform assembly 30 having such a configuration, the container body 2 shown in FIG. 1 can be 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.

  The discharge cap 3 is made of polypropylene, and includes a cap body 40 and a lid 50 as shown in FIG. The ejection cap 3 may be formed of another resin such as polyethylene.

  The cap body 40 is formed in a substantially topped cylindrical shape having a top wall portion 41 and a cylindrical side wall portion 42 integrally connected to the outer peripheral edge of the top wall portion 41. The container 11 is attached to the container main body 2 so as to cover the outer periphery of the portion 11 and to cover the upper end of the inner opening 21 with the top wall portion 41.

  A cap-side engaging portion 43 is provided on the inner peripheral surface at the lower end portion of the side wall portion 42. The cap-side engaging portion 43 is formed in a protruding shape protruding radially inward from the inner peripheral surface of the side wall portion 42, and when the discharge cap 3 is plugged into the outer opening portion 11, the outer opening portion 11 is formed. Undercut engagement with the mouth side engaging portion 16 provided on the outer peripheral surface of the outer cap 11 prevents the discharge cap 3 from coming off the outer mouth 11. As described above, the discharge cap 3 is configured to be attached to the outer opening 11 by tapping.

  Note that the cap-side engaging portion 43 may be formed in an annular shape extending over the entire circumference of the side wall portion 42, or may be formed in a plurality of portions that are arranged intermittently in the circumferential direction.

  A discharge port 44 for the contents is integrally provided on the upper surface of the top wall portion 41. The contents stored in the storage space S of the inner layer body 20 can be discharged from the discharge ports 44 to the outside. In the present embodiment, the discharge port 44 is formed in a cylindrical shape that is outwardly curved while gradually increasing in diameter from the top wall portion 41 upward. Various changes can be made in accordance with the contents to be stored in the storage device, the use, and the like.

  A portion of the inner peripheral surface of the side wall portion 42 above the cap-side engaging portion 43 is a cap-side sealing portion 45. When the discharge cap 3 is completely attached to the container main body 2 by the undercut engagement and the screw engagement, the cap-side seal portion 45 is attached to the outer peripheral end of the mouth-side seal portion 17 (the mouth-side engagement portion 16). The contact is made over the entire circumference (see FIG. 2), and the space between the side wall portion 42 and the outer opening portion 11 is hermetically sealed. Note that a configuration in which the cap-side engaging portion 43 also serves as the cap-side seal portion 45 may be employed.

  The top wall portion 41 is provided with a ventilation port 46, through which the outside air can be taken into the inside of the cap body 40 from outside and supplied to the outside air introduction port 13 through the through groove 61a. it can. The through groove 61a is provided small enough so that the air between the outer layer body 10 and the inner layer body 20 can press the housing space S when the body 12 is squeezed.

  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 integrally provided with a cylindrical plug member 53 on the inner surface of the top wall 52, and when the lid 50 is in the closed position covering the upper part of the cap body 40, the plug member 53 is moved to the discharge port 44. And the discharge port 44 is closed. 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 cover 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 the outer periphery of the top wall 41 undercut engagement. Held in state.

  On the other hand, when the cover 50 is rotated around the hinge 51 to the open position, the plug member 53 is detached from the discharge port 44, and the discharge port 44 is opened to discharge the contents.

  An inner plug 60 is mounted inside the cap main body 40 as shown in FIG. The inner plug 60 is attached to the open end of the inner opening 21 and covers the open end. An outer peripheral edge of the inner plug 60 is integrally provided with a cylindrical engaging wall 61 that rises upward, and an upper end of the engaging wall 61 contacts the lower surface of the top wall portion 41 of the cap body 40. Thus, a predetermined space is provided between the outflow hole 62 of the inner plug 60 and the top wall portion 41. A small through groove 61 a that guides outside air from the ventilation port 46 to the outside air introduction port 13 is provided on the outer peripheral edge of the inner plug 60.

  The inner stopper 60 is provided with a content outlet hole 62. The outflow hole 62 communicates with the discharge port 44 via a space between the outflow hole 62 of the inner plug 60 and the top wall portion 41, and allows the contents accommodated in the housing space S to pass through the outflow hole. It can flow out to the discharge port 44 through 62.

  A discharge valve including a check valve 63, a leg 63 a and an annular wall 64 is incorporated in the inner plug 60. The check valve 63 is formed in a plate shape (disc shape), is disposed on the upper surface of the inner plug 60 facing the top wall portion 41, and closes the outflow hole 62. The annular wall 64 is formed in a cylindrical shape, disposed between the top wall portion 41 and the inner plug 60, and fitted to the top wall portion 41 and the inner plug 60. The check valve 63 is connected to the annular wall 64 by a plurality of elastically deformable legs 63a. As a result, the check valve 63 moves in the direction approaching or separating from the upper surface of the inner plug 60 to allow the outflow of the contents from the storage space S to the discharge port 44 and to store the content from the discharge port 44. The outflow hole 62 is opened and closed so as to prevent the contents and outside air from flowing into the space S.

  The space between the top wall portion 41 and the outflow hole 62 of the inner plug 60 is defined such that a portion inside the annular wall 64 is a liquid flow channel and a portion outside the annular wall 64 is a gas flow channel. Have been.

  The inner plug 60 is provided with a cylindrical tubular wall 65 that is located on the opposite side of the hinge 51 from the outflow hole 62 and extends toward the accommodation space S. The lower end of the cylindrical wall 65 is reduced in diameter so that the inner diameter becomes smaller as it goes downward, and a spherical (ball-shaped) valve body 66 made of steel, resin, or the like is provided inside the cylindrical wall 65 in the vertical direction. It is arranged movably in the direction.

  When the container main body 2 is set to the inclined position with the discharge port 44 facing downward, the valve body 66 moves inside the cylindrical wall 65 in FIG. Then, when the container body 2 is returned to the upright posture so that the discharge port 44 faces upward after the contents are poured out, the valve body 66 has a reduced-diameter portion with the inside of the cylindrical wall 65 directed downward. Then, the contents remaining in the discharge port 44 after moving to the position where it comes into contact with the suction port are sucked toward the inside of the cylindrical wall 65. Thereby, the remaining amount of the liquid inside the discharge port 44 can be reduced, and the dripping from the discharge port 44 can be suppressed. Thus, the valve body 66 functions as a suck-back mechanism for suppressing liquid dripping from the discharge port 44.

  In the discharge container 1 of the present embodiment, the discharge cap 3 is attached to the mouth (outer opening 11) of the container main body 2 by stoppering. The male screw portion 18 is provided, and the female screw portion 48 is provided on the inner peripheral surface of the side wall portion 42 of the discharge cap 3. Even when the male screw 18 does not engage with the female screw 48 and the male screw 18 temporarily rides on the female screw 48 when the discharge cap 3 is plugged into the outer opening 11, the male screw 18 is not used. Since the portion 18 is formed intermittently in the circumferential direction as shown in FIGS. 3 and 4, the threads can be easily formed by rotating the discharge cap 3 relative to the container body 2 by a predetermined angle in the circumferential direction. And both are screwed. In the present embodiment, since the male screw portion 18 and the female screw portion 48 are formed by four-threaded screws, the male screw portion 18 and the female screw portion 48 are screw-engaged by a relative rotation of a maximum of 90 degrees. 3 can be unscrewed. When the discharge cap 3 is attached to the container body 2, the cap-side engaging portion 43 smoothly crosses the male screw portion 18 and can be undercut-engaged with the mouth-side engaging portion 16. The projecting height of the side engaging portion 16 to the outside in the radial direction is preferably higher than the thread height of the male screw portion 18.

  In the present embodiment, the male screw portion 18 is configured to be formed intermittently in the circumferential direction, but the present invention is not limited to this mode. Instead of the male screw part 18, the female screw part 48 side may be formed intermittently in the circumferential direction.

  After the male thread 18 is engaged with the female thread 48, the female cap 48 of the discharge cap 3 is rotated by rotating the discharge cap 3 relative to the container body 2 as shown in FIG. The undercut engagement between the mouth-side engaging portion 16 and the cap-side engaging portion 43 is released. Therefore, the discharge cap 3 can be easily removed from the outer port 11 of the container body 2 by a simple operation of simply rotating the discharge cap 3 relative to the outer port 11.

  As described above, in the present embodiment, the container main body 2 that accommodates the contents, the discharge cap 3 that includes the discharge port 44 for the contents, and is attachable to and detachable from the opening (outer opening 11) of the container main body 2. The outer peripheral surface of the mouth is provided with a male screw portion 18 and a mouth-side engaging portion 16 formed below the male screw portion 18 and protruding outward in the radial direction. On the inner peripheral surface of the side wall portion 42 of the discharge cap 3 surrounding from the radial outside, a female screw portion 48 engageable with the male screw portion 18 is provided. The engaging portion 16 is provided with a cap-side engaging portion 43 capable of undercut engagement, one of the male screw portion 18 and the female screw portion 48 is provided as a continuous screw portion continuous in the circumferential direction, and the other is provided in the circumferential direction. So that it can be provided as an intermittent thread It was. By adopting such a configuration, the discharge cap 3 is attached to the outer opening portion 11 of the container body 2 by tapping, and at the same time, the discharge cap 3 is formed by using the screw engagement of the male screw portion 18 and the female screw portion 48 together. After the undercut engagement and the screw engagement with the container main body 2, the discharge cap 3 is rotated with respect to the container main body 2, so that the discharge cap 3 is screwed up along the thread of the male screw portion 18 and the undercap is engaged. The cut engagement can be easily released, and the discharge cap 3 can be removed from the container body 2. In particular, in the present embodiment, one of the male screw portion 18 and the female screw portion 48 is configured as an intermittent screw portion. Therefore, even if the male screw portion 18 and the female screw portion 48 do not mesh with each other during the undercut engagement, the discharge cap 3 is rotated by a predetermined rotation or more. By rotating the screw, the screw engagement can be relatively easily performed, and the discharge cap 3 can be subsequently removed. Therefore, the operation of separating the discharge cap 3 from the container body 2 can be facilitated.

  Further, in the present embodiment, the container body 2 has the outer layer body 10 and the inner layer body 20 which is arranged inside the outer layer body 10 and stores the contents, and the space between the outer layer body 10 and the inner layer body 20 is provided. It is configured to have an outside air introduction port 13 for introducing outside air into the air conditioner. By adopting such a configuration, it is possible to easily perform a separation operation of a double container that requires a high separation processing.

  In this embodiment, the outside air inlet 13 is formed between the upper end of the outer layer body 10 and the upper end of the inner layer body 20. By adopting such a configuration, it is possible to provide the external thread portion 18 on the outer peripheral surface of the outer opening portion 11 without considering interference with the outside air inlet 13. It is possible to increase the degree of freedom in the arrangement of the nozzles, and it is not necessary to provide a through-hole that penetrates the outer opening 11 in the radial direction. it can.

  Further, in the present embodiment, the male screw portion 18 and the female screw portion 48 are configured to include a multi-thread screw portion. By adopting such a configuration, even when the male screw portion 18 and the female screw portion 48 do not mesh with each other during the undercut engagement, the screw thread can be meshed with less rotation of the discharge cap 3.

  Further, in the discharge container 1 of the present embodiment, the lower end of the cap body 40 is sealed by the mouth-side seal portion 17 and the cap-side seal portion 45, and the outside air is passed through the vent 46 provided in the top wall portion 41 of the cap body 40. Since the outside air was introduced into the inlet 13, it was suppressed that contents and foreign matters were introduced between the outer layer body 10 and the inner layer body 20 through the outside air inlet 13, and the contents were discharged. At times, the accommodation portion 22 of the inner layer body 20 can be reliably separated from the trunk portion 12 of the outer layer body 10.

  Further, in the discharge container 1 of the present embodiment, the male screw portion 18 is provided above the mouth side engaging portion 16 and the female screw portion 48 is provided above the cap side engaging portion 43. When the female screw part 3 is relatively rotated with respect to the outer opening part 11, the female screw part 48 is surely moved along the male screw part 18, and the cap-side engaging part 43 is at the lower end side where the diameter of the side wall part 42 is easily deformed. The undercut engagement of the cap-side engaging portion 43 with the mouth-side engaging portion 16 is easily released by providing the portion. Thereby, the discharge cap 3 can be more easily removed from the outer opening 11 of the container body 2.

  Furthermore, in the discharge container 1 of the present embodiment, the mouth-side engaging portion 16 is configured to also serve as the mouth-side seal portion 17, so that the height of the outer mouth portion 11 can be reduced. In addition, the size and weight of the discharge container 1 can be reduced.

  Although the present disclosure has been described with reference to the drawings and embodiments, it should be noted that those skilled in the art can easily make various changes and modifications based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, functions included in each component can be rearranged so as not to be logically inconsistent, and a plurality of components can be combined into one or divided. It should be understood that these are also included in the scope of the present invention.

  For example, in the present embodiment, the container main body 2 is a laminated peeling container (double container), but is not limited thereto, and may not have a double container configuration.

  Further, in the present embodiment, the ejection cap 3 is made of polypropylene or polyethylene, but is not limited thereto, and may be made of another synthetic resin material.

  Furthermore, in this embodiment, the container body 2 (the outer layer body 10 and the inner layer body 20) or the preform assembly 30 (the outer preform 31 and the inner preform 32) are made of polyethylene terephthalate. If the main body 2 and the discharge cap 3 are formed of different materials, these materials can be variously changed.

  Further, in the present embodiment, the male screw portion 18 and the female screw portion 48 are configured to include the four-thread screw, but the present invention is not limited to this mode. The number of threads of the male screw portion 18 and the female screw portion 48 may be one to three, or five or more.

  Further, in the present embodiment, the container main body 2 is configured to be formed by biaxial stretch blow molding, but is not limited to this aspect, and may be formed by extrusion blow molding.

DESCRIPTION OF SYMBOLS 1 Discharge container 2 Container main body 3 Discharge cap 10 Outer layer body 11 Outer opening (mouth)
Reference Signs List 12 Body 12a Shoulder-like part 12b Body main part 12c Bottom part 13 Outside air inlet 14 Neck ring 16 Mouth side engaging part 17 Mouth side sealing part 18 Male screw part 20 Inner layer body 21 Inner mouth (mouth)
22 accommodation part 23 gap 24 enlarged diameter part 25 flange part 26 vertical rib 30 preform assembly 31 outer preform 31a extension part 32 inner preform 32a extension part 40 cap body 41 top wall part 42 side wall part 43 cap side engaging part 44 Discharge port 45 Cap side seal part 46 Vent hole 48 Female screw part 50 Lid body 51 Hinge 52 Top wall 53 Plug member 54 Cylindrical projection 55 Locking groove 60 Inner plug 61 Engaging wall 61a Through groove 62 Outflow hole 63 Check valve 63a leg part 64 annular wall 65 cylindrical wall 66 valve element 70 groove part O axis center S accommodation space

Claims (4)

A container body for storing the contents,
A discharge container comprising a discharge port for contents, and a discharge cap detachable at a mouth of the container body,
On the outer peripheral surface of the mouth portion, a male thread portion, and a mouth side engaging portion formed below the male thread portion and protruding radially outward are provided,
On the inner peripheral surface of the side wall portion of the discharge cap surrounding the mouth portion from the radial outside, a female screw portion engageable with the male screw portion, and formed below the female screw portion to protrude radially inward. A cap-side engaging portion capable of undercut engagement is provided in the mouth-side engaging portion,
A discharge container, wherein one of the male screw portion and the female screw portion is provided as a continuous screw portion continuous in the circumferential direction, and the other is provided as an intermittent screw portion formed intermittently in the circumferential direction. .   The container body has an outer layer body and an inner layer body which is arranged inside the outer layer body and accommodates contents, and has an outside air inlet for introducing outside air into a space between the outer layer body and the inner layer body. The discharge container according to claim 1, wherein the discharge container has:   The discharge container according to claim 2, wherein the outside air inlet is formed between an upper end of the outer layer body and an upper end of the inner layer body.   The discharge container according to any one of claims 1 to 3, wherein the male screw part and the female screw part include a multi-threaded part.

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