Discharge container

Abstract

To provide an ejection container configured in such a manner that the erroneous opening of the ejection container due to rotation of an ejection tool is easily suppressed.SOLUTION: An ejection container 1 has a container main body 2, an ejection tool 3, and a shrink film 6. The container main body has a mouth 2a, the ejection tool has an outer peripheral wall 3a having, on an inner peripheral surface, a threadedly engaging portion 4 which can be threadedly disengaged from a state in which the threadedly engaging portion 4 is threadedly engaged with an outer peripheral surface of the mouth 2a and an engagement portion 5 which is engaged with the outer peripheral surface of the mouth 2a in such a manner that rotation toward the threadedly disengaged side, which is at least one side in a circumferential direction, the shrink film is fitted to at least on the outer peripheral wall 3a over the whole circumference.SELECTED DRAWING: Figure 1

Description

【Technical Field】 【0001】 The present invention relates to a discharge container. 【Background Art】 【0002】 There is known a discharge container having a container body with a mouth portion and a discharge tool that can be screwed off from a state of being screwed onto the outer peripheral surface of the mouth portion (see, for example, Patent Document 1). 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2022-110142 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 Regarding the discharge container as described above, from the viewpoints of suppressing oxidation of the content due to contact with the outside air and suppressing entry of foreign matter into the content, it is desirable to be able to suppress accidental opening due to rotation of the discharge tool. 【0005】 Therefore, an object of the present invention is to provide a discharge container that is easily capable of suppressing accidental opening due to rotation of the discharge tool. 【Means for Solving the Problems】 【0006】 One aspect of the present invention is as follows. 【0007】 A container body having a mouth portion, [[ID=五十一]] A discharge tool having an outer peripheral wall having an engaging portion that engages with a screwing portion that can be screwed off from a state of being screwed onto the outer peripheral surface of the mouth portion and that is restricted from rotating in at least one circumferential direction, the screwing-off side, of the outer peripheral surface of the mouth portion, on the inner peripheral surface, And having at least a shrink film attached to the entire circumference of the outer peripheral wall. death, The engaging portion is provided on the side of the opening that faces inward from the opening towards the inside of the container body, rather than on the side of the screwed portion that faces inward from the opening in the axial direction of the opening. The outer surface of the outer peripheral wall has a circumferential groove extending in the circumferential direction between the screw portion and the engagement portion, and an axial groove extending in the axial direction between the circumferential groove and the one end of the outer peripheral wall in the axial direction. The shrink film is attached over a range that spans at least the engaging portion in the axial direction. , discharge container. 【0009】 [ 2 ] The shrink film shrinks in diameter from the end of the outer peripheral wall toward the container body in the axial direction of the opening. [1] The discharge container described above. 【0010】 [ 3 ] The container body comprises an outer layer, an inner layer, and an outside air inlet for introducing outside air between the outer layer and the inner layer. [1] or [2] The discharge container described above. [Effects of the Invention] 【0011】 According to the present invention, it is possible to provide a dispensing container that can easily prevent accidental opening due to the rotation of the dispensing device. [Brief explanation of the drawing] 【0012】 [Figure 1] This is an external view showing a dispensing container of one embodiment of the present invention. [Figure 2] This is a cross-sectional view AA in Figure 1. [Figure 3] Figure 1 is a partial cross-sectional view illustrating the procedure for attaching the shrink film to the dispensing container. [Modes for carrying out the invention] 【0013】 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 【0014】 As shown in FIGS. 1 to 3, in one embodiment of the present invention, the discharge container 1 includes a container body 2 having a mouth portion 2a, a body portion 2b, and a bottom portion, a screwing portion 4 that can be screwed on and off from the outer peripheral surface of the mouth portion 2a, and an engaging portion 5 that engages with the outer peripheral surface of the mouth portion 2a so as to restrict rotation in at least one circumferential direction, i.e., the unscrewing side. The discharge tool 3 has an outer peripheral wall 3a having the engaging portion 5 on its inner peripheral surface, and a shrink film 6 that is mounted over the entire circumference of at least the outer peripheral wall 3a. 【0015】 In this embodiment, the direction along the central axis O of the mouth portion 2a is referred to as the axial direction. The side from the mouth portion 2a as one side of the axial direction toward the inside of the container body 2 is referred to as the lower side, the opposite side is referred to as the upper side, the direction orthogonal to the central axis O is referred to as the radial direction, and the direction around the central axis O is referred to as the circumferential direction. 【0016】 The engaging portion 5 engages with the outer peripheral surface of the mouth portion 2a so as to restrict rotation in both circumferential directions. However, the configuration of the engaging portion 5 is not limited to this, and it may be configured to engage with the outer peripheral surface of the mouth portion 2a so as to restrict rotation in the circumferential unscrewing direction and allow rotation in the opposite direction. 【0017】 The engaging portion 5 has a shape in which recesses and protrusions are alternately continuous over the entire circumference, and the outer peripheral surface of the mouth portion 2a has a plurality of protrusions that fit into the recesses of the engaging portion 5 in a range that does not cover the entire circumference in the circumferential direction. However, the configuration of the engaging portion 5 and the outer peripheral surface of the mouth portion 2a is not limited to this. For example, the outer peripheral surface of the mouth portion 2a may have a shape in which recesses and protrusions are alternately continuous over the entire circumference, and the engaging portion 5 may have a plurality of protrusions that fit into the recesses of the outer peripheral surface of the mouth portion 2a in a range that does not cover the entire circumference in the circumferential direction. 【0018】 According to the discharge container 1 with the above-described configuration, for example, as shown in FIG. 3, when the shrink film 6 is attached over the range from the bottom of the container body 2 to the upper end of the discharge port 3 by heat shrinkage, the engaging portion 5 can be tightened from the outside in the radial direction by the shrinkage force of the shrink film 6 and firmly engaged with the outer peripheral surface of the mouth portion 2a. Further, at the start of use of the discharge container 1, as shown in FIG. 1, a part of the shrink film 6 thus attached can be removed within a range necessary for discharging the contents accommodated in the container body 2 through the discharge port 3 while leaving at least the portion that is attached to the outer peripheral wall 3a over the entire circumference. In addition, a mark as a guide for facilitating such removal, a perforation as a planned break portion, or the like may be provided. 【0019】 According to such a removal operation of the shrink film 6, the shrink film 6 that remains can suppress the accidental opening due to the rotation of the discharge port 3. That is, even when a force is applied to twist the discharge port 3 in the circumferential unscrewing direction with respect to the container body 2 unintentionally, the shrink film 6 restricts the outer peripheral wall 3a from elastically deforming outward in the radial direction. Therefore, the engagement between the engaging portion 5 of the outer peripheral wall 3a and the outer peripheral surface of the mouth portion 2a is restricted from coming off. Accordingly, it is possible to suppress the oxidation of the contents inside the container body 2 due to contact with outside air and easily realize the good maintenance of the quality of the contents. In addition, it is also possible to easily suppress the mixing of foreign substances into the contents inside the container body 2 due to accidental opening. Note that the shrink film 6 may be attached from the beginning within a range where the above-described removal is not necessary. 【0020】 When the contents are used up and the discharge container 1 is to be discarded, for example, by breaking a perforation extending in the axial direction and removing the shrink film 6, the tightening force on the engaging portion 5 by the shrink film 6 is eliminated, and the engaging portion 5 can be easily elastically deformed outward in the radial direction. Therefore, the discharge port 3 can be easily removed from the container body 2 by unscrewing through the screwing portion 4, and separate disposal or the like can be performed. 【0021】 From the viewpoint of making it easier to suppress accidental opening due to rotation of the dispensing tool 3, the shrink film 6 is attached over a range that spans at least the engaging portion 5 in the axial direction, as shown in Figure 1. With this configuration, the radial outward elastic deformation of the outer peripheral wall 3a at the engaging portion 5 can be efficiently restricted by the shrinking force of the shrink film 6 due to heating, so that the dispensing tool 3 can be more strongly restricted from rotating toward the unscrewed side relative to the opening portion 2a. However, the configuration of the shrink film 6 is not limited to this. 【0022】 The engaging portion 5 is located below the threaded portion 4, and the outer surface of the outer peripheral wall 3a has a circumferential groove 7 extending circumferentially between the threaded portion 4 and the engaging portion 5, and an axial groove 8 extending axially between the circumferential groove 7 and the lower end of the outer peripheral wall 3a. With this configuration, the removal of the discharge tool 3 by unscrewing during disposal can be facilitated. In other words, the circumferential groove 7 and axial groove 8 make it easier for the radially outward elastic deformation of the outer peripheral wall 3a at the engaging portion 5 when the shrink film 6 is absent to occur. 【0023】 The circumferential groove 7 is provided along the entire circumference, and the axial groove 8 is provided from the circumferential groove 7 to the lower end of the outer peripheral wall 3a. However, the configuration of the circumferential groove 7 and the axial groove 8 is not limited to this. 【0024】 From the viewpoint of making it easier to suppress accidental opening due to rotation of the dispensing device 3, the shrink film 6 is made to shrink in diameter from the lower end of the outer peripheral wall 3a toward the side of the container body 2 (downward) in the axial direction. With this configuration, the elastic deformation of the outer peripheral wall 3a radially outward at the engaging portion 5 can be more strongly restricted by the shrink film 6, and thus the rotation of the dispensing device 3 toward the unscrewed side relative to the opening portion 2a can be more strongly restricted. However, the configuration of the shrink film 6 is not limited to this. 【0025】 The container body 2 has an outer layer 9, an inner layer 10, and an outside air inlet 11 that introduces outside air between the outer layer 9 and the inner layer 10 as the inner layer 10 contracts due to the discharge of the contents contained in the inner layer 10. With this configuration, contact of the contents inside the container body 2 with the outside air introduced into the container body 2 instead of the contents when they are discharged can be suppressed, thereby suppressing oxidation of the contents. However, the container body 2 is not limited to such a double-walled container. 【0026】 The outside air inlet 11 is provided in the opening 2a, but is not limited to this, and may be provided in the body 2b or the bottom, for example. The outer layer 9 and the inner layer 10 are each made of polyethylene terephthalate resin and are formed by biaxially stretched blow molding a bottomed cylindrical preform assembled to form a double-walled structure. However, the outer layer 9 and the inner layer 10 are not limited to polyethylene terephthalate, and may be formed from other materials such as polyester, polypropylene, polyethylene or other polyolefins, or other resins. The manufacturing method for the container body 2 as a double-walled container is not limited to biaxially stretched blow molding, and may be extrusion blow molding, for example. 【0027】 The threaded portion 4 is provided on the inner surface of the outer peripheral wall 3a, arranged in the circumferential direction, and is formed when the threads provided on the outer peripheral surface of the opening 2a are pressed against the multiple ribs that extend in the axial direction, after the dispensing tool 3 is attached by driving in a plug, thereby transferring the shape of the threads. However, the configuration of the dispensing tool 3 is not limited to this. 【0028】 The dispensing device 3 is configured as a dispensing cap that dispenses the contents by pressing it against the container body 2. However, the configuration of the dispensing device 3 is not limited to this; for example, it may be configured as a push-down head type or trigger type pump device. 【0029】 The present invention is not limited to the embodiments described above, and can be modified in various ways without departing from its essence. 【0030】 Therefore, the discharge container 1 of the above-described embodiment can be modified as long as it includes a container body 2 having a mouth portion 2a, a discharge tool 3 having an outer circumferential wall 3a having a screw portion 4 that can be unscrewed from a state in which it is screwed onto the outer circumferential surface of the mouth portion 2a and an engaging portion 5 that engages with the outer circumferential surface of the mouth portion 2a in such a way that rotation toward the unscrewed side, which is at least one side in the circumferential direction, is restricted, and a shrink film 6 that is attached to at least the entire circumference of the outer circumferential wall 3a. [Explanation of symbols] 【0031】 1 Discharge container 2. Container body 2a Mouth 2b Torso 3 Dispensing tool 3a Outer wall 4. Threaded section 5 Engagement part 6. Shrink film 7 Circumferential groove 8 Axial groove 9 Outer body 10 Inner layers 11. Outside air intake O center axis

Claims

[Claim 1] A container body having an opening, A discharge tool having an outer circumferential wall having a screw portion on its inner circumferential surface that can be unscrewed from a screwed state on the outer circumferential surface of the opening, and an engaging portion that engages with the outer circumferential surface of the opening in such a way that rotation toward the unscrew side, which is at least one side in the circumferential direction, It comprises at least the outer peripheral wall and a shrink film attached around its entire circumference, The engaging portion is provided on the side of the opening that faces inward from the opening towards the inside of the container body, rather than on the side of the screwed portion that faces inward from the opening in the axial direction of the opening. The outer surface of the outer peripheral wall has a circumferential groove extending in the circumferential direction between the screw portion and the engagement portion, and an axial groove extending in the axial direction between the circumferential groove and the one end of the outer peripheral wall in the axial direction. A dispensing container in which the shrink film is attached over a range that spans at least the engaging portion in the axial direction. [Claim 2] The discharge container according to claim 1, wherein the shrink film is reduced in diameter from the end of the outer peripheral wall toward the container body in the axial direction of the opening. [Claim 3] The discharge container according to claim 1, wherein the container body comprises an outer layer, an inner layer, and an outside air inlet for introducing outside air between the outer layer and the inner layer.

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