Liquid container and method of manufacturing liquid container

Abstract

To provide a novel liquid container which enables separate disposal of the container and can stably pour a content liquid through a nozzle.SOLUTION: A liquid container 100 comprises a container body 10 which has a cylindrical barrel part 11 forming a storage space S for a content liquid and a neck part 15 connected above the barrel part 11 and having a reduced diameter relative to the barrel part 11; a cylindrical nozzle 20 connected above the container body 10 via the neck part 15 and configured to guide the content liquid to the outside; and an outer tube 30 provided radially outside the nozzle 20 to form a liquid recovery flow path R for returning the content liquid located outside the nozzle 20 in the radial direction to the storage space S. The container body 10, the nozzle 20, and the outer tube 30 are integrally molded. A notch 22 extending in the axial direction is provided in a part of the circumferential wall 21 of the nozzle 20, and an upper portion of the wall 21 of the nozzle 20 includes an inclined portion 21d inclined radially inward and upward.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a liquid container including a container body and a nozzle, and a method for manufacturing the liquid container. [Background technology]

[0002] Conventionally, liquid containers have been known that are used to store relatively viscous liquid contents such as liquid laundry detergents and fabric softeners, and each container has a container body with a storage space for the liquid contents, a cylindrical nozzle, and an outer cylinder that forms a liquid recovery flow path outside the nozzle (see, for example, Patent Document 1).

[0003] In such a liquid container, the container body, nozzle, and outer tube are molded as a single unit, which reduces the amount of resin used, and since there is no need to separate the nozzle cap from the container body, the container can be easily disposed of separately. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-67210 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional liquid containers, the cylindrical wall of the nozzle is positioned on a perfect circle, and although a pouring groove is provided on the inner surface of the cylindrical wall, there are cases where the liquid contents splash and cannot be poured stably to the desired location, so there is still room for improvement in this regard.

[0006] The present disclosure aims to solve these problems, and its purpose is to provide a new liquid container and a method for manufacturing a liquid container that allows the container to be easily disposed of separately and that allows the liquid contents to be steadily poured out through a nozzle. [Means for solving the problem]

[0007] The present disclosure has been made to solve the above problems, and the liquid container of the present disclosure comprises: [1] a container body having a cylindrical body portion defining a storage space for the liquid content, and a neck portion connected to the upper part of the body portion and having a smaller diameter than the body portion; a cylindrical nozzle connected to an upper portion of the container body via the neck portion and directing the content liquid to the outside; an outer cylinder provided radially outside the nozzle and forming a liquid recovery flow path that returns the content liquid radially outside the nozzle into the storage space; A liquid container comprising: the container body, the nozzle, and the outer cylinder are integrally formed, a notch extending in an axial direction is provided in a part of a circumferential direction of a cylindrical wall of the nozzle, The nozzle has a cylindrical wall whose upper portion has an inclined portion that slopes radially inward as it extends upward.

[0008] The liquid container of the present disclosure also includes: [2] In the configuration described in [1] above, it is preferable that the inner surface of the neck portion is inclined radially outward as it extends downward, and the thickness of the neck portion in the radial direction is gradually reduced.

[0009] The liquid container of the present disclosure also includes: [3] In the configuration described in [1] or [2] above, it is preferable that the outer cylinder 30 has a cylindrical peripheral wall 31 and a bottom wall 33 that slopes downward from the lower end of the peripheral wall 31 toward the radially inner side.

[0010] The present disclosure has been made to solve the above-mentioned problems, and the method for manufacturing a liquid container of the present disclosure includes: [4] a container body having a cylindrical body portion that defines a storage space for the liquid content; a cylindrical nozzle connected to an upper portion of the container body via a neck portion having a smaller diameter than the body portion and directing the content liquid to the outside; an outer cylinder provided radially outside the nozzle and forming a liquid recovery flow path that returns the content liquid radially outside the nozzle into the storage space; A method for manufacturing a liquid container comprising: a notch extending in an axial direction is provided in a part of a circumferential direction of a cylindrical wall of the nozzle, forming a preform in which a bottomed cylindrical main body, the nozzle, and the outer cylinder are integrally molded; By blow molding the main body portion, The container body; the neck portion having a diameter larger than that of the main body portion and smaller than that of the outer cylinder; and forming By the blow molding, forming an inclined portion provided on an upper portion of the cylindrical wall of the nozzle and inclined radially inward toward the upper portion; The present invention is characterized by comprising: [Effects of the Invention]

[0011] According to the present disclosure, it is possible to provide a new liquid container and a method for manufacturing a liquid container that allows the container to be easily separated for disposal and allows the liquid content to be stably poured out through a nozzle. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a front cross-sectional view of a liquid container according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is an enlarged cross-sectional view of the nozzle and outer cylinder portion in FIG. [Figure 3] FIG. 2 is a right side cross-sectional view of a liquid container according to an embodiment of the present disclosure. [Figure 4] FIG. 1 is a front view of a liquid container according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present disclosure will now be illustrated in more detail with reference to the drawings.

[0014] A liquid container 100 according to one embodiment of the present disclosure, shown in FIGS. 1 to 4, is suitable for use in containing relatively viscous liquid contents, such as liquid laundry detergent or fabric softener. The liquid container 100 includes a container body 10, a nozzle 20, and an outer cylinder 30. In FIGS. 1 to 3, the shape of a preform 200 (described later), which is a precursor to the liquid container 100, is indicated by a two-dot chain line. In this specification, claims, abstract, and drawings, the side on which the nozzle 20 is located is referred to as the upper side (upper side in FIG. 1), and the side on which the bottom 12 of the container body 10 is located is referred to as the lower side (lower side in FIG. 1). However, when describing the tilted position of the liquid container 100, the side on which the nozzle 20 is located may be referred to as the tip side. Furthermore, the radially outward direction refers to the direction away from the central axis O along a straight line that passes through the central axis O of the liquid container 100 and is perpendicular to the central axis O, which extends vertically in FIG. 1. The radially inward direction refers to the direction toward the central axis O along that straight line. 1 is used to define the radially outer side and the radially inner side, and does not mean that the components of liquid container 100 of this embodiment are always formed symmetrically around this central axis O. Furthermore, the circumferential direction is the direction of rotation around the central axis O.

[0015] The accompanying drawings of the present disclosure are drawn to equal scale in the up-down, front-back, and left-right directions, and the aspect ratio of the liquid container 100 in the drawings represents the aspect ratio of the liquid container 100 of the present disclosure. However, the configuration, shape, dimensional ratio, etc. of the liquid container 100 in the accompanying drawings are merely one embodiment of the present disclosure. The present disclosure should be interpreted based on the wording of the claims and is not limited to the configuration, shape, dimensional ratio, etc. shown in the drawings.

[0016] Furthermore, in this specification, claims, abstract and drawings, "integral molding" refers to something that is molded as a single unit within a mold, and includes things that are molded as a single unit by insert molding, two-color molding, etc., but does not include things that are formed by integrating separate parts molded in separate molds through a post-process that does not involve resin molding, such as bonding.

[0017] The container body 10 is formed in a bottle shape, with a body 11 that defines an internal storage space S for the liquid content, a bottom 12 that closes the lower end of the body 11, and a cylindrical neck 15 (mouth of the container body 10) that continues above the body 11 via a shoulder 13, and the liquid content (not shown) can be stored in the storage space S. The container body 10 can be made of synthetic resin, such as polyethylene (PE), polypropylene (PP), polystyrene (PS), or polyethylene terephthalate (PET).

[0018] As shown in FIGS. 1 to 3 , the nozzle 20 is molded integrally with the container body 10 so as to be continuous with the upper end of the neck portion 15 of the container body 10. In this embodiment, the nozzle 20 is formed in a C-shaped cross section, i.e., a gutter-like shape, with a notch 22 extending from one end to the other along the axial direction at one circumferential location on the cylindrical wall 21. The circumferential edge forming the notch 22 at the upper part of the cylindrical wall 21 is formed with a chamfered portion 23 that is cut to be rounded when viewed from the side. The tip of the cylindrical wall 21 of the nozzle 20 is formed with an inclined portion 21d that slopes radially inward, and this inclined portion 21d narrows the upper (tip) portion of the cylindrical wall 21 of the nozzle 20. This configuration allows the content liquid contained in the storage space S of the container body 10 to be stably dispensed to a desired location through the nozzle 20 without splashing. The nozzle 20 protrudes upward from the upper end of the neck portion 15 and is made of the same synthetic resin material as the container body 10.

[0019] The tip of the nozzle 20 is not limited to the chamfered portion 23 that is cut to have a rounded shape when viewed from the side, but may have various shapes, such as a chamfered portion that is linearly inclined.

[0020] An outer cylinder 30 for attaching a cap 40 (see FIG. 2) is provided radially outward of the nozzle 20. Like the nozzle 20, the outer cylinder 30 is integrally molded with the container body 10 so as to be continuous with the upper end of the neck 15 of the container body 10. The outer cylinder 30 includes a substantially cylindrical peripheral wall 31, an annular neck ring 32 protruding radially outward at approximately the center height of the peripheral wall 31, and a bottom wall 33 sloping downward radially inward from the lower end of the peripheral wall 31, with the inner peripheral edge of the bottom wall 33 connected to the upper end of the neck 15 of the container body 10. In this embodiment, the container body 10, the nozzle 20, and the outer cylinder 30 are integrally molded from the same synthetic resin material.

[0021] In this embodiment, the area surrounded by the cylindrical wall 21 of the nozzle 20, the peripheral wall 31 of the outer cylinder 30, and the bottom wall 33 functions as a liquid recovery flow path R that returns the content liquid that has leaked out radially outward from the nozzle 20 into the storage space S. In other words, the bottom wall 33 extending downward radially inward from the lower end of the peripheral wall 31 of the outer cylinder 30 functions as the bottom wall 33 of the liquid recovery flow path R.

[0022] The upper surface of the bottom wall 33 of the liquid recovery channel R is formed to have approximately the same height in the circumferential direction. However, this is not limited to this embodiment, and the upper surface may be formed in a spiral shape over half a circumference from the left end to the right end, with the left end being the highest in FIGS. 1 and 2 and the right end where the cutout portion 22 is provided being the lowest. Note that, "the upper surface of the bottom wall 33 is at the same height at the left and right ends in FIG. 2" means that the left and right ends are at the same height at the same radial position (the same widthwise position of the channel). Similarly, "the upper surface of the bottom wall 33 gradually decreases from the left end to the right end in FIG. 2" means that the upper surface gradually decreases from the left end to the right end at the same radial position (the same widthwise position of the channel).

[0023] Furthermore, the bottom wall 33 is inclined downward from the radially outer side toward the radially inner side at the same circumferential position. With this configuration, the content liquid outside the nozzle 20 is collected radially inward, and can therefore smoothly return to the storage space S through a communication passage 35, which will be described later.

[0024] In this embodiment, the lower end of the notch 22 provided at one location around the circumference of the nozzle 20 serves as a communication passage 35 that connects the liquid recovery flow path R and the storage space S. The liquid that leaks out radially outward from the nozzle 20 enters the liquid recovery flow path R and moves from the left end to the right end of the bottom wall 33 in FIG. 2 when the user tilts the liquid container 100, for example. The liquid that moves inside the liquid recovery flow path R to the right end of the bottom wall 33 then moves further radially inward and passes through the communication passage 35 (see FIG. 2) to be returned to the storage space S of the container body 10.

[0025] A male thread portion 31a for attaching a cap 40 (described later) by threaded engagement is provided on the outer peripheral surface of the upper portion of the peripheral wall 31 of the outer cylinder 30. Note that instead of the male thread portion 31a, an annular protrusion may be provided on the peripheral wall 31 for attaching the cap 40 by tapping engagement.

[0026] As shown in FIG. 2, cap 40 includes an outer peripheral wall 41 that covers nozzle 20 from the radial outside, a top wall 43 that closes the upper end of outer peripheral wall 41, a flange portion 44 that protrudes radially outward from the lower end of outer peripheral wall 41, a mounting tube 45 that hangs down from the outer edge of flange portion 44, a sealing wall 46 that hangs down from the underside of flange portion 44 radially inward of mounting tube 45 and abuts against the inner surface of peripheral wall 31 to provide a liquid-tight seal, and an inner tube 47 that hangs down from the underside of flange portion 44 radially inward of sealing wall 46.

[0027] A female thread 45a is formed on the inner surface of the mounting tube 45 to threadably engage with the male thread 31a formed on the peripheral wall 31 of the outer tube 30. As shown in Fig. 2, by threadably engaging the female thread 45a of the cap 40 with the male thread 31a of the outer tube 30, abutting the seal protrusion 44a on the underside of the flange 44 against the upper end surface of the peripheral wall 31, and abutting the seal wall 46 against the inner surface of the peripheral wall 31, a liquid-tight seal can be achieved against the outside.

[0028] In this embodiment, the cap 40 has the role of preventing the content liquid from leaking out from the nozzle hole 21a defined by the nozzle 20, but it can also function as a measuring cap by providing a measuring scale, for example, as a rib-like protrusion or printed on the outer peripheral wall 41. When the cap 40 is used as a measuring cap, the content liquid can be easily measured by making the cap 40 out of, for example, a transparent or translucent resin.

[0029] When the cap 40 is also used as a measuring cap, the top wall 43 of the cap 40, which is formed in the shape of a flat plate, is positioned downward and the opening of the cap 40 is positioned upward, thereby enabling the liquid to be measured.

[0030] 2, when the cap 40 is turned around the central axis O to release the threaded connection between the cap 40 and the outer tube 30, the cap 40 can be moved upward relative to the container body 10. Then, when the threaded engagement is completely released, the cap 40 can be removed from the outer tube 30 by pulling it upward.

[0031] With cap 40 removed from outer cylinder 30 and nozzle 20 exposed, container body 10 is changed from an upright position with the tip of nozzle 20 facing upward to an inclined position with notch 22 facing upward. As a result, the tip of nozzle 20 is directed downward, so that the liquid content in storage space S can be guided into cylindrical wall 21 through nozzle hole 21a and further stably poured to a desired external location through cylindrical wall 21, which is formed so that the tip narrows.

[0032] Furthermore, even if the content liquid adhering to the tip of the nozzle 20 drips along the outer peripheral surface 21c of the nozzle 20 when the container body 10 is returned to the upright position after the content liquid has been dispensed, the content liquid will not drip outside the outer cylinder 30 but will drip downward along the nozzle 20 and be received by the bottom wall 33 of the liquid recovery flow path R. The content liquid that drips into the liquid recovery flow path R is collected radially inward while moving on the bottom wall 33 and is returned to the storage space S of the container body 10 via the communicating path 35. Therefore, with this liquid container 100, the content liquid can be dispensed from the nozzle 20 while preventing the content liquid from dripping to the outside.

[0033] After use, the cap 40 can be attached by threading the female thread portion 45a of the cap 40 back onto the male thread portion 31a of the outer cylinder 30, thereby closing the nozzle 20.

[0034] Liquid container 100 according to this embodiment can be formed, for example, by integrally molding preform 200, shown by two-dot chain lines overlapping liquid container 100 in Figures 1 to 3, by injection molding or the like, then fixing preform 200 to the mold by abutting it against the reference surface of the blow molding mold, and performing biaxial stretch blow molding. In Figures 1 to 3, only the portions of preform 200 that do not overlap with liquid container 100 are shown by two-dot chain lines, and the portions that overlap with liquid container 100 are shown only by solid lines, with reference numerals indicating the portions of preform 200 in parentheses.

[0035] 1 and 2, the preform 200 includes a test-tube-shaped, bottomed, cylindrical main body 110, and a nozzle 120 and an outer cylinder 130 integrally molded at the upper end of the main body 110. The main body 110 includes a cylindrical body 111 and a substantially hemispherical bottom 112 that closes the lower end of the body 111. The main body 110 is the portion that forms the neck 15, shoulder 13, body 11, and bottom 12 of the liquid container 100 by biaxially stretch blow molding the preform 200, and has an internal space S2.

[0036] The outer cylinder 130 of the preform 200 has substantially the same shape as the outer cylinder 30 of the liquid container 100, and is a portion that undergoes little deformation (expansion) during biaxial stretch blow molding. As shown in Figure 2 and other figures, the nozzle 120 is formed with a C-shaped cross section, i.e., a trough-like shape, with a notch 122 extending from one end to the other along the axial direction at one location in the circumferential direction of a cylindrical tubular wall 121. In addition, the circumferential edge forming the notch 122 at the top of the tubular wall 121 is formed with a chamfered portion 123 that is cut so as to appear rounded when viewed from the side.

[0037] 2, nozzle 120 of preform 200 differs from nozzle 20 of liquid container 100 in that cylindrical wall 121 extends parallel to the central axis in the vertical direction. Outer circumferential surface 121c of cylindrical wall 121 has an arc shape of a perfect circle in plan view.

[0038] That is, since the cylindrical wall 121 has the cutout portion 122, it is not a perfect circle in plan view, but has an arc shape that is a part of a perfect circle. With the above-mentioned configuration, the outer peripheral surface 121c of the cylindrical wall 121 is located on a perfect circle in the entire area in plan view. Note that the outer peripheral surface 121c of the cylindrical wall 121 means the outer surface extending in the circumferential direction of the cylindrical wall 121, and the surface extending in the radial direction formed by providing the cutout portion 122 is not included in the outer peripheral surface 121c of the cylindrical wall 121. With this configuration, when the nozzle 120 and the main body portion 110 of the preform 200 are integrally molded using a mold, the mold part for molding the nozzle 120 portion and the mold part for molding the main body portion 110 can both be parts having a perfect circle shape or an arc shape of a perfect circle. Therefore, since the mating surfaces of the mold parts can be made into a perfect circle, the molding precision of each mold part can be improved, and eccentricity can be suppressed by improving the alignment precision of the mold part that molds main body 110 with the mold part that molds nozzle 120. As a result, uneven thickness of container body 10 in liquid container 100 can be suppressed.

[0039] The outer cylinder 130 of the preform 200 comprises a substantially cylindrical peripheral wall 131, an annular neck ring 132 that protrudes radially outward at approximately the center height position of the peripheral wall 131, and a bottom wall 133 that slopes downward from the lower end of the peripheral wall 131 toward the inside in the radial direction, and the inner peripheral edge of the bottom wall 133 is connected to the upper end of the main body 110. The outer cylinder 130 of the preform 200 has roughly the same shape as the outer cylinder 30 of the liquid container 100, but the bottom wall 133 is configured to slope more gently downward toward the inside in the radial direction than the bottom wall 33 of the liquid container 100.

[0040] In this embodiment, the area surrounded by the cylindrical wall 121 of the nozzle 120, the peripheral wall 131 of the outer cylinder 130, and the bottom wall 133 forms a liquid recovery flow path R.

[0041] 1 to 3, first, preform 200 is formed by integrally molding test-tube-shaped, bottomed, cylindrical main body 110, nozzle 120 having a circular outer circumferential surface 121c in a plan view, and outer cylinder 130. Preform 200 can be formed by injection molding using synthetic resin such as polyethylene (PE), polypropylene (PP), polystyrene (PS), or polyethylene terephthalate (PET).

[0042] Next, the abutment surface of the preform 200 (for example, the lower surface of the neck ring 132) is abutted against a reference surface of a blow molding die and fixed, and biaxial stretch blow molding is performed by supplying pressurized fluid into the inside of the preform 200 while stretching the main body portion 110 in the axial direction using a stretch rod. In this embodiment, only the main body portion 110 is stretched in the axial and radial directions by blow molding, and the neck portion 15, shoulder portion 13, body portion 11, and bottom portion 12 shown in Figures 1 to 3 are formed, thereby forming the liquid container 100.

[0043] In particular, in this embodiment, when the main body 110 is stretched, it is slightly stretched radially outward not only at a height corresponding to the barrel 11 but also at a height corresponding to the neck 15. With this configuration, the neck 15 of the liquid container 100 has a larger diameter than the main body 110 of the preform 200 and a smaller diameter than the barrel 11 and the outer tube 30 of the liquid container 100. The inner surface of the neck 15 extends downward and radially outward from the connection with the inner surface of the nozzle 20, sloping downward. Furthermore, the thickness of the neck 15 gradually decreases downward as the barrel 11 is stretched, thereby reducing the step at the connection portion from the lower end of the cylindrical wall 21 of the nozzle 20 through the neck 15 to the shoulder 13, thereby achieving a smooth connection. Therefore, the step near the neck 15 is reduced, improving the appearance of the liquid container 100. Furthermore, the liquid content contained in the barrel 11 can move smoothly through the shoulder 13 and the neck 15 to the nozzle 20.

[0044] In the manufacturing method for liquid container 100 according to this embodiment, the downward stretching of body portion 11 also pulls the radially inner portion of bottom wall 33 of outer cylinder 30 downward. Therefore, the downward inclination of bottom wall 33 of outer cylinder 30 increases toward the radially inner side during biaxial stretch blow molding. Therefore, the liquid content in liquid recovery channel R can be reliably collected radially inward and returned to storage space S via communicating channel 35.

[0045] Furthermore, in this embodiment, the portion of the main body 110 corresponding to the neck 15 extends radially outward, thereby becoming larger in diameter than the main body 110, and at least the tip of the nozzle 20 that is not fixed to the blow molding mold tilts radially inward, which is the opposite direction, to form the inclined portion 21d (in the example of FIG. 2, the entire nozzle 20 tilts radially inward). At this time, because the nozzle 20 has the notch 22 extending in the vertical direction, the circumferential width of the notch 22 at the tip becomes narrower, thereby reducing the diameter of the tip of the nozzle 20. As a result, the tip of the nozzle 20 becomes narrower.

[0046] In this method of manufacturing liquid container 100, only main body 110 of preform 200, in which main body 110, nozzle 120, and outer cylinder 130 are integrally molded, is expanded by biaxial stretch blow molding to form liquid container 100 in which container body 10, nozzle 20, and outer cylinder 30 are integrally molded. Because liquid recovery flow path R is defined and formed by nozzle 20 and outer cylinder 30, liquid container 100 is a container in which container body 10, nozzle 20, and liquid recovery flow path R are integrally molded.

[0047] As described above, this embodiment is a liquid container 100 including a container body 10 having a cylindrical body 11 that defines a storage space S for the content liquid, a neck 15 that is connected to the upper part of the body 11 and has a smaller diameter than the body 11, a cylindrical nozzle 20 that is connected to the upper part of the container body 10 via the neck 15 and that directs the content liquid to the outside, and an outer cylinder 30 that is provided radially outside the nozzle 20 and forms a liquid recovery flow path R that returns the content liquid radially outside the nozzle 20 to the storage space S, where the container body 10, the nozzle 20, and the outer cylinder 30 are formed by integral molding, a cylindrical wall 21 of the nozzle 20 has a notch 22 that extends axially in a portion of its circumferential direction, and an upper part of the cylindrical wall 21 of the nozzle 20 has an inclined portion 21d that slopes radially inward toward the top. Employing this configuration makes it possible to effectively prevent the content liquid from dripping out while allowing the content liquid to be poured from the nozzle 20. Furthermore, since the container body 10, nozzle 20, and liquid recovery channel R are integrally molded, the amount of resin used can be reduced, and since there is no need to separate the nozzle cap and the container body, separate disposal is also made easier.

[0048] The phrase "easy to separate and dispose of" means that the nozzle cap (nozzle component) and the container body can be disposed of together, eliminating the need to separate them.

[0049] In particular, in this embodiment, an inclined portion 21d that is inclined radially inward is formed at the tip of the cylindrical wall 21 of the nozzle 20, and this inclined portion 21d is configured to narrow the upper portion (tip) of the cylindrical wall 21 of the nozzle 20. With this configuration, the content liquid contained in the storage space S of the container body 10 can be stably poured out to a desired position through the nozzle 20 without splashing.

[0050] In this embodiment, the neck 15 is configured so that its inner surface slopes radially outward and its radial thickness gradually decreases downward. This configuration reduces the step at the connection from the lower end of the cylindrical wall 21 of the nozzle 20 through the neck 15 to the shoulder 13, creating a smoother connection. This reduces the step near the neck 15, improving the appearance of the liquid container 100. Furthermore, the liquid content contained in the body 11 can move smoothly through the shoulder 13 and the neck 15 to the nozzle 20. The thickness of the neck 15 does not necessarily need to gradually decrease downward; it may be configured to reduce the step near the neck 15 by, for example, extending the main body 110 of the preform 200 corresponding to the neck 15 radially outward.

[0051] In this embodiment, the outer cylinder 30 is configured to have a cylindrical peripheral wall 31 and a bottom wall 33 that slopes downward radially inward from the lower end of the peripheral wall 31. By adopting this configuration, the content liquid outside the nozzle 20 is collected radially inward while moving circumferentially within the liquid recovery flow path R to the right end, and can therefore smoothly return to the storage space S through the communication path 35.

[0052] The present embodiment is a method for manufacturing a liquid container 100 including a container body 10 having a cylindrical body 11 that defines a storage space S for the content liquid, a cylindrical nozzle 20 that is connected to the upper part of the container body 10 via a neck 15 that is smaller in diameter than the body 11 and that directs the content liquid to the outside, and an outer cylinder 30 that is provided radially outside the nozzle 20 and forms a liquid recovery flow path R that returns the content liquid radially outside the nozzle 20 into the storage space S, and the nozzle 20 has a cylindrical wall 21 that is provided at a portion of its circumferential direction with a The method includes forming a preform 200 by integrally molding a bottomed cylindrical main body 110 having a notch 22, a nozzle 120, and an outer cylinder 130; blow molding the main body 110 to form a container body 10 and a neck 15 having a diameter larger than that of the main body 110 and smaller than that of the outer cylinder 30; and forming an inclined portion 21d provided at an upper portion of a cylindrical wall 21 of the nozzle 20 and inclining radially inward toward the upper portion by blow molding. By adopting this configuration, an inclined portion 21d inclined radially inward is formed at the tip portion of the cylindrical wall 21 of the nozzle 20, and this inclined portion 21d narrows the upper portion (tip portion) of the cylindrical wall 21 of the nozzle 20. This configuration allows the content liquid contained in the storage space S of the container body 10 to be easily poured to a desired position through the nozzle 20.

[0053] In particular, in this embodiment, since the container body 10 is integrally formed below the nozzle 20, molding the nozzle 20 so that the upper portion thereof narrows would normally require the use of a complex mold structure. In this embodiment, by extending the neck portion 15 radially outward, the upper portion of the nozzle 20 can be displaced radially inward, which is the opposite direction, to narrow the tip of the nozzle 20. Therefore, the nozzle 20 with a narrowed tip can be formed using a mold with a simple configuration, and the content liquid can be easily dispensed to the desired position.

[0054] Although the present disclosure has been described based on various drawings and examples, it should be noted that those skilled in the art can easily make various modifications and alterations based on the present disclosure. Therefore, it should be noted that these modifications and alterations are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to cause logical inconsistencies, and multiple components can be combined into one or divided. It should be understood that these modifications and alterations are also included in the scope of the present invention.

[0055] For example, in this embodiment, the bottom wall 133 of the outer cylinder 130 is configured to be slightly inclined downward toward the radially inward direction when the preform 200 is formed, but this is not limited to this. The bottom wall 133 of the preform 200 may be configured to extend horizontally, and the bottom wall 33 of the outer cylinder 30 of the liquid container 100 may be configured to be inclined downward toward the radially inward direction as the neck portion 15 stretches radially outward during blow molding.

[0056] In addition, in this embodiment, the container body 10, the nozzle 20, and the outer cylinder 30 are configured to be integrally molded from the same synthetic resin material, but this is not limited to this. As long as the container body 10, the nozzle 20, and the outer cylinder 30 are integrally molded, some of these may be made of a synthetic resin different from that of the other parts. [Industrial Applicability]

[0057] According to the present disclosure, a new liquid container 100 can be provided that allows for easy separate disposal of the container and allows the liquid content to be stably poured out through nozzle 20. [Explanation of symbols]

[0058] 10 Container body 11 Torso 12 Bottom 13 Shoulder 15 Neck 20 nozzles 21 Cylinder wall 21a Nozzle hole 21c Outer surface of the cylinder wall 21d Slope 22 Notch 23 Chamfered part 30 outer cylinder 31 Peripheral wall 31a Male thread 32 Neck Ring 33 Bottom wall 35 Communication path 40 Cap 41 Peripheral wall 43 Ceiling wall 44 Flange 44a Seal protrusion 45 Mounting tube 45a female thread 46 Seal Wall 47 Inner cylinder 100 liquid containers 110 Main body 111 Torso 112 Bottom 120 nozzles 121 Cylinder wall 121c Outer surface of cylinder wall 122 Notch 123 Chamfered part 130 outer cylinder 131 Peripheral wall 132 Neck Ring 133 Bottom wall 200 preforms O center axis R Liquid recovery channel S Storage space S2 interior space

Claims

1. a container body having a cylindrical body portion defining a storage space for the liquid content, and a neck portion connected to the upper part of the body portion and having a smaller diameter than the body portion; a cylindrical nozzle connected to an upper portion of the container body via the neck portion and directing the content liquid to the outside; an outer cylinder provided radially outside the nozzle and forming a liquid recovery flow path that returns the content liquid radially outside the nozzle into the storage space; A liquid container comprising: the container body, the nozzle, and the outer cylinder are integrally formed, a notch extending in an axial direction is provided in a part of a circumferential direction of a cylindrical wall of the nozzle, A liquid container, wherein an upper portion of the cylindrical wall of the nozzle has an inclined portion that slopes radially inward as it extends upward.

2. 2. The liquid container according to claim 1, wherein the inner surface of the neck portion is inclined radially outwardly downward and the wall thickness in the radial direction is gradually reduced.

3. 3. The liquid container according to claim 1, wherein the outer cylinder has a cylindrical peripheral wall and a bottom wall that slopes downward radially inward from a lower end of the peripheral wall.

4. a container body having a cylindrical body portion that defines a storage space for the liquid content; a cylindrical nozzle connected to an upper portion of the container body via a neck portion having a smaller diameter than the body portion and directing the content liquid to the outside; an outer cylinder provided radially outside the nozzle and forming a liquid recovery flow path that returns the content liquid radially outside the nozzle into the storage space; A method for manufacturing a liquid container comprising: a notch extending in an axial direction is provided in a part of a circumferential direction of a cylindrical wall of the nozzle, forming a preform in which a bottomed cylindrical main body, the nozzle, and the outer cylinder are integrally molded; By blow molding the main body portion, The container body; the neck portion having a diameter larger than that of the main body portion and smaller than that of the outer cylinder; and forming By the blow molding, forming an inclined portion provided on an upper portion of the cylindrical wall of the nozzle and inclined radially inward toward the upper portion; A method for manufacturing a liquid container, comprising:

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