Tube container

Abstract

To provide a metal tube container body with a screw engagement structure capable of opening / closing a cap with a small number of rotations without losing the advantage of the metal tube container that it can be mass-produced at a low cost.SOLUTION: A plurality of engaging projections 61 to be engaged with the female screw 33 of the cap 3 are provided on the outer periphery of the mouth part 6 of the metallic tube container body 2 at intervals in the circumferential direction, and a female screw receiving space 62 capable of receiving the female screw 33 is formed below each engaging projection 61 so as to open radially outward and circumferentially by rolling after extrusion molding of the extruded tube.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a tube container having a metal tube container body, such as an aluminum tube container body, and a cap. [Background technology]

[0002] Aluminum tube containers can be mass-produced quickly and at low cost using impact extrusion molding, and yet they have excellent gas barrier properties, light blocking properties, and chemical resistance, so they are widely used as containers for ointments, creams, and gel-type pharmaceuticals.

[0003] Aluminum tube containers generally comprise an aluminum tube container body with a cylindrical mouth with an open top end, and a synthetic resin cap that is detachably screwed onto the mouth. The mouth has a male thread on the outer periphery and a female thread on the inner periphery of the cap, allowing the cap to be screwed onto the mouth.

[0004] Users have been demanding that container caps be opened and closed quickly and easily with fewer rotations of the cap, and the following Patent Documents 1, 2, and 3 disclose devices in which the male and female threads are configured as multiple-start threads with two or more start threads.

[0005] Patent Document 1 relates to a rectangular container rather than a tube container, which is an injection-molded container in terms of its structure, but it discloses a configuration in which the male and female threads are double-start threads and the lead angle β is large, allowing the cap to be opened and closed with a small rotation angle of around 90°.

[0006] Patent Document 2 discloses a tube container for contents such as mayonnaise, ketchup, mustard paste, toothpaste, etc., typically a blow-molded container made of synthetic resin, in which the male screw on the outer periphery of the mouth is a double-start screw and a notched portion is provided in the thread of the male screw so that the mouth can be easily crushed (Embodiments 1 and 2, Figures 1-7).

[0007] Patent Document 3 discloses a tube container that is a blow-molded container made of synthetic resin, judging from its shape, and has a double-start thread on the outer periphery of the mouth.

[0008] Furthermore, as a configuration for a stopper cap that is attached to the mouth by pushing the cap in rather than screwing it onto the mouth, the third embodiment (Figs. 8-10) of Patent Document 2 discloses one that is provided with an interlocking ring protrusion with a missing portion. Similarly, as a configuration for a stopper cap, Patent Document 4 discloses an aluminum tube container in which an undercut portion is formed in the bulging portion of the mouth provided in the lower part of the mouth. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Jikko No. 57-42846 [Patent Document 2] Patent No. 5768392 [Patent Document 3] Design Registration No. 0820907 [Patent Document 4] Patent No. 4738647 Summary of the Invention [Problem to be solved by the invention]

[0010] In the injection-molded containers and blow-molded containers disclosed in Patent Documents 1 to 3, even if the thread is multiple-start, by using a mold that corresponds to the external shape, it is possible to provide an appropriate part such as a stopper at a position that has a predetermined correlation with the starting position of the male thread, and molding can be performed at the same speed as with a single-start thread.

[0011] On the other hand, the male thread on the outer periphery of the mouth of an aluminum tube container is formed by rolling after the mouth shape is preformed into a cylindrical shape by extrusion molding, but as a result, the position where the male thread starts to be cut is not fixed. Therefore, even if a positioning stopper for the cap is formed by extrusion molding, it is not possible to start cutting the thread at a position that has a predetermined correlation with the stopper.

[0012] Furthermore, while the rolling speed for single-start male threads in current manufacturing processes is extremely fast, at just a few tenths of a second, it is difficult to form multiple-start threads at the same speed. Therefore, if an attempt were made to form a multiple-start male thread on the mouth of an aluminum tube container by rolling, this would undermine the advantages of aluminum tube containers, such as their fast forming speed and ease of mass production.

[0013] Furthermore, in the case of the mouth structure for a stoppering cap as disclosed in the third embodiment of Patent Document 2 and Patent Document 4, the sealing performance when the cap is closed is inferior to that of a cap with a thread engagement structure. Therefore, there is a demand for a metal tube container body to have a thread engagement structure at the mouth that allows the cap to be opened and closed with a small number of rotations.

[0014] The present invention aims to provide a metal tube container that can be provided with a thread engagement structure on the metal tube container body that allows the cap to be opened and closed with a small number of rotations, without losing the advantage of metal tube containers, such as low cost and mass production. From another perspective, the present invention aims to provide a metal tube container body that can be provided with a thread engagement structure during extrusion molding at a position that serves as a reference for providing a positioning stopper for determining the position at which the cap is tightened. [Means for solving the problem]

[0015] The present invention provides a tube container comprising a metal tube container body having a cylindrical mouth portion with an open end at the upper end, and a cap that is removably screwed onto the mouth portion, wherein a female thread is provided on the inner periphery of the cap, and a plurality of engaging protrusions that engage with the female thread are provided integrally with the mouth portion on the outer periphery of the mouth portion, spaced apart circumferentially, and below each engaging protrusion a female screw receiving space that can receive the female screw is formed so as to open radially outward and circumferentially.

[0016] The female thread receiving space accommodates a portion of the female thread that has threaded downward beyond the engaging protrusion as a result of tightening the cap. Preferably, the female thread receiving space can receive multiple threads of the female thread in longitudinal section. If the female thread is a multiple-start thread, the female thread receiving space may be able to receive all of the threads that have threaded downward beyond the engaging protrusion as a result of tightening the cap.

[0017] Each engaging protrusion may have a partial helical structure corresponding to the pitch of the female thread, or may be formed by an engaging piece extending horizontally.

[0018] According to the present invention, since a plurality of engaging protrusions provided at intervals in the circumferential direction on the outer periphery of the mouth of the metal tube container body are configured to engage with the female thread of the cap, there is no need to form a male thread on the outer periphery of the mouth by rolling, and the engaging protrusions can be manufactured by a manufacturing method described below without impairing the mass productivity of the metal tube container. Furthermore, the portion that constitutes the engaging protrusions (for example, the upper end of the vertical rib in the manufacturing method described below) can be preformed during extrusion molding, and by simultaneously molding the portion that constitutes the positioning stopper of the cap on the outer periphery of the mouth during extrusion molding, it is also possible to provide the positioning stopper at a predetermined circumferential position with respect to the thread structure consisting of the engaging protrusions of the container body and the female thread of the cap.

[0019] In the tube container of the present invention, the female thread is preferably a multiple-start thread, and the number of the plurality of engaging protrusions is preferably equal to the number of threads of the multiple-start thread. More preferably, the female thread is a double-start thread, and two engaging protrusions can be provided corresponding to each start of the female thread. This makes it possible to open and close the cap with fewer rotations without providing a male thread on the opening.

[0020] A positioning stopper for positioning the cap at the complete fastening position may be provided on the outer periphery of the mouth portion, below the female screw receiving space and at a predetermined circumferential position corresponding to the circumferential position of one of the multiple engaging protrusions. In this case, an engaging portion that engages with the positioning stopper at the complete fastening position may be provided on the inner periphery near the lower end of the cap. This allows the positioning stopper for the complete fastening position to be provided at a position that has a predetermined correlation with the engaging protrusion, which is the thread engagement structure of the mouth portion of the metal tube container body, and enables the cap to be positioned at the complete fastening position even in a tube container that includes a metal tube container body and a cap. Preferably, a protrusion that the positioning stopper can overcome just before the complete fastening position may be provided on the engaging portion so that it can be tactilely recognized that the cap has been rotated to the complete fastening position.

[0021] A plurality of positioning stoppers for positioning the cap at the complete fastening position may be provided on the outer periphery of the mouth portion below the female thread receiving space at predetermined circumferential positions corresponding to the respective circumferential positions of the plurality of engaging protrusions. In this case, a plurality of engaging portions may be provided near the lower end of the cap, corresponding to the circumferential positions of each positioning stopper, and engaging with the plurality of positioning stoppers at the complete fastening position. This allows the positioning stoppers for the complete fastening position to be provided at positions that are correlated with the plurality of engaging protrusions that form the thread engagement structure of the mouth portion of the metal tube container body, thereby more reliably positioning the cap at the complete fastening position even in a tube container including a metal tube container body and a cap. Preferably, each engaging portion may be provided with a protrusion that the positioning stopper can overcome just before the complete fastening position, so that it can be tactilely recognized that the cap has been rotated to the complete fastening position. Note that "near the lower end of the cap" refers to a region closer to the lower end of the cap than the lower end of the female thread. The engaging portion may be provided on the inner circumferential surface of this region, or on the lower end surface of the cap.

[0022] The positioning stopper may be provided at the same circumferential position as any of the plurality of engaging protrusions. Preferably, a positioning stopper can be provided corresponding to each engaging protrusion. In this way, the positioning stopper is provided at a circumferential position where the rigidity is increased by the engaging protrusion, thereby further improving the stability of positioning at the tightening completion position.

[0023] The metal tube container body can be preferably manufactured by a manufacturing method including an impact extrusion molding step of extruding an extruded metal tube and a post-processing step of forming the metal tube container body by post-processing the extruded metal tube. The extruded metal tube has a plurality of vertical ribs extending downward from the engaging projection formation position until they abut against other components that constitute the extruded metal tube, and the female screw receiving space can be formed in the vertical midpoint of the vertical ribs in the post-processing step so that the upper ends of the vertical ribs before the post-processing constitute the engaging projection.

[0024] According to this, when extruding a metal extruded tube, it is sufficient to form vertical ribs that serve as engaging protrusions, which are the thread engaging portion structure, in a subsequent post-processing step, and because the vertical ribs extend downward until they abut against other components that make up the tube (for example, a shoulder portion or a ring-shaped step portion protruding from the outer periphery of the lower end of the mouth portion), the material has good fluidity in the mold during extrusion molding, making it possible to extrude a metal extruded tube with vertical ribs with a high yield. Then, by forming a female screw receiving space midway up and down the vertical rib in a post-processing step, it is possible to easily and quickly form a female screw receiving space that opens radially outward and circumferentially, and it is possible to manufacture a metal tube container body with engaging protrusions that engage with a double-start thread without compromising mass productivity.

[0025] The post-processing step may be a rolling step in which the female screw-receiving space is formed in the vertical midpoint of the longitudinal rib by rolling. This can further increase the speed at which the female screw-receiving space is formed. Note that if problems such as cutting chips (so-called contamination) can be resolved, the female screw-receiving space can also be formed by cutting or other methods instead of rolling. [Effects of the Invention]

[0026] According to the present invention, it is possible to provide the metal tube container body with a thread engagement structure that allows the cap to be opened and closed with a small number of rotations, without losing the advantage of metal tube containers, which are mass-produced at low cost. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is an overall perspective view of a tube container according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged perspective view of the opening of the container body of the tube container. [Figure 3] FIG. 2 is a perspective view of the cap of the tube container as viewed from the bottom side. [Figure 4] FIG. 2 is a plan view of the cap of the tube container. [Figure 5] FIG. 2 is a vertical cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 2 is a vertical cross-sectional view taken along the line BB in FIG. [Figure 7] FIG. 6 is a cross-sectional view taken along the line CC in FIG. 5. [Figure 8] FIG. 1 is a front view of an extruded metal tube formed by an extrusion molding process. [Figure 9] FIG. [Figure 10] FIG. 10 is an enlarged perspective view of the opening of the container body of the tube container according to the second embodiment of the present invention. [Figure 11] FIG. 2 is a perspective view of the cap of the tube container as seen from the bottom side. [Figure 12] 10 is a cross-sectional view of the vicinity of the lower end of the cap when the cap is attached to the opening of the tube container. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0028] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

[0029] 1 to 7 show a tube container 1 according to a first embodiment of the present invention, which includes a metal tube container body 2 having a mouth 6 and a synthetic resin cap 3 detachably screwed onto the mouth 6. The container body 2 is preferably made of aluminum. Furthermore, the container body 2 is preferably formed by subjecting an extruded metal tube to predetermined post-processing.

[0030] As shown in FIGS. 3 to 6, the cap 3 has a cylindrical outer peripheral wall 31.

[0031] A partition wall 32 is provided at the axial midpoint of the outer peripheral wall 31 to separate the internal space of the outer peripheral wall 31 into upper and lower spaces.

[0032] A double-start internal thread 33 is provided on the inner periphery of the outer wall 31 in the region below the partition wall 32. Depending on the diameter of the mouth portion 6 and the required tightening torque, the internal thread 33 may also be configured as a multiple-start thread with three or more starts.

[0033] Multi-start threads, also known as compound or multi-turn threads, are thread designs in which two or more threads are cut side by side. This creates multiple starts or entry points on the thread, allowing for a greater axial travel distance per revolution compared to single-start threads. Therefore, the required axial travel distance can be achieved with fewer revolutions. Multi-start threads can have two, three, four, or more starts, but a two-start thread is preferred for the internal threads on the tube container cap of this embodiment. The number of starts indicates the number of threads. For multi-start threads, the lead is calculated by multiplying the pitch by the number of starts. The lead is the axial travel distance per revolution. The pitch is the distance between the crests of adjacent threads in a longitudinal cross section. In a multi-start thread, adjacent threads belong to different starts.

[0034] An engaging portion 34 that engages with a positioning stopper, which will be described later, is provided on the inner periphery near the lower end of the outer periphery wall 31.

[0035] A cylindrical center leg portion 35 is provided on the underside of the partition wall 32, which fits airtightly into the open end of the mouth portion 6 when the cap 3 is tightened.

[0036] An opening needle 36 is provided on the upper surface of the partition wall 32, which can pierce the sealing film 7 to open the mouth 6 by removing the cap 3 from the mouth 6 and turning it upside down.

[0037] The outer peripheral shape of the lower end (bottom) of the outer peripheral wall 31 of the cap 3 is formed into a substantially octagonal shape (see FIG. 4), which makes it difficult for the cap 3 to roll when placed on a desk by itself. Rolling can also be prevented by making the outer peripheral shape of a predetermined axial portion of the cap 3 non-circular, such as polygonal, or by providing anti-rolling protrusions at predetermined circumferential portions.

[0038] The container body 2 has a cylindrical body 4 with a folded bottom, a truncated conical shoulder 5 integrally formed at the upper end of the body 4, and a cylindrical mouth 6 integrally formed at the upper end of the body 4 via the shoulder 5.

[0039] The mouth 6 has an open end at its upper end, which is sealed by a sealing film 7 when not in use, as shown in FIGS.

[0040] A plurality of engagement protrusions 61 that engage with the female thread 33 are provided integrally with the mouth portion 6 at equal intervals in the circumferential direction on the outer periphery near the upper end of the mouth portion 6. The engagement protrusions 61 are provided below the upper end of the mouth portion 6. The number of engagement protrusions 61 is preferably equal to the number of threads of the multiple-start thread that constitutes the female thread 33, and in this embodiment, two engagement protrusions 61 are provided at corresponding positions in the diameter direction.

[0041] Below each engaging protrusion 61, a female screw receiving space 62 is formed so as to open radially outward and circumferentially, capable of receiving the female screw 33 that has screwed downward past the engaging protrusion 61 as the cap 3 is tightened into the mouth portion 6. The vertical width of the female screw receiving space 62 is sized so as to be able to accommodate all of the female screw portions located below the engaging protrusions 61 of the female screw 33 that has screwed downward past the engaging protrusions 61 when tightening of the cap 3 is complete (see Figures 5 and 6). In the illustrated example, the space is sized so as to be able to accommodate two adjacent threads of the female screw 33 in the longitudinal cross section.

[0042] A plurality of positioning stoppers 63 for positioning the cap at the completed tightening position are protrudingly provided on the outer periphery of the lower end of the mouth portion 6, below the female screw receiving space 62, at predetermined circumferential positions corresponding to the circumferential positions of each of the plurality of engaging protrusions 61. In the illustrated embodiment, the positioning stoppers 63 are configured as convex portions. Each positioning stopper 63 is provided at the same circumferential position as the corresponding engaging protrusion 61. Each positioning stopper 63 is provided radially outward of the corresponding engaging protrusion 61. Note that the positioning stopper 63 may be provided at a position offset by a predetermined angle circumferentially from the engaging protrusion 61. Alternatively, only one positioning stopper 63 may be provided, in which case the positioning stopper 63 can be provided at a predetermined circumferential position corresponding to the circumferential position of any one of the engaging protrusions 61.

[0043] A plurality of engagement portions 34 are provided on the inner periphery near the lower end of the cap 3, corresponding to the circumferential positions of the positioning stoppers 63, and adapted to engage with the positioning stoppers 63 at the cap fastening completion position.

[0044] In this embodiment, the engagement portions 34 are provided at two corresponding positions in the diameter direction.

[0045] In addition, the engagement portion 34 has a locking protrusion 34a that abuts against the stopper 63 to prevent further tightening of the cap 3, and an arc-shaped tactile sensation-imparting protrusion 34b that can be overcome by applying a certain amount of tightening torque to the cap 3 by utilizing the flexibility near the lower end of the cap 3, thereby giving the user an appropriate tactile sensation (a clicking sensation) when the cap 3 is completely tightened.

[0046] A protrusion 64 having the same circumferential width and protruding height as the engagement protrusion 61 is provided between the female screw receiving space 62 and the stopper 63. In this embodiment, two protrusions 64 are provided at the same circumferential positions as the two stoppers 63. These protrusions 64 help to increase the rigidity around the stopper 63, and can prevent the stopper 63 from being pushed radially inward as the number of times the cap 3 is opened and closed increases.

[0047] Next, a method for manufacturing the metallic tube container body 2 will be described.

[0048] In a manufacturing method according to one embodiment, first, a collapsible metal tube 2A shown in FIG. 8 is extrusion molded by a conventionally known method (impact extrusion molding step).

[0049] The metal extruded tube 2A has a cylindrical body 4A, a truncated cone-shaped cylindrical shoulder 5A integrally formed at the upper end of the body 4A, and a cylindrical mouth 6A integrally formed at the upper end of the body 4A via the shoulder 5A, with the body 4A forming the body 4 in the final product, the shoulder 5A forming the shoulder 5 in the final product, and the mouth 6A forming the mouth 6 in the final product.

[0050] A plurality of vertical ribs 66 are provided circumferentially spaced apart on the outer periphery of the mouth portion 6A at circumferential positions where the engaging protrusions 61 are provided. Each vertical rib 66 extends downward from the vertical position where the engaging protrusions 61 are formed until it abuts against another component of the extruded tube 2A, which in the illustrated embodiment is a large-diameter step provided on the outer periphery of the lower end of the mouth portion 6A. The circumferential width and radial height of the vertical ribs 66 are the same as those of the engaging protrusions 61 they form.

[0051] This metal extruded tube 2A is subjected to predetermined post-processing to form the metal tube container body 2. Figure 9 shows an example of post-processing, in which a female screw receiving space 62 is formed in the middle of the vertical direction of the vertical rib 66 so that the upper end of the vertical rib 66 before post-processing will form the engaging protrusion 61 after post-processing, and the lower end of the vertical rib 66 before post-processing will form the protrusion 64 after post-processing (post-processing step).

[0052] Preferably, as shown in FIG. 9, the female screw receiving space 62 can be formed in the vertical midway portion of the vertical rib 66 by rolling using a pair of left and right rolling dies 9 (rolling step).

[0053] 10 to 12 show a tube container according to a second embodiment of the present invention. The same components as those in the first embodiment are given the same reference numerals and detailed description thereof will be omitted. Different components, actions, and effects will be described.

[0054] In the tube container of this embodiment, instead of the positioning mechanism for the tightening end position consisting of the stopper 63 and engagement portion 34 of the first embodiment, an alarm mechanism is provided that engages at every predetermined rotation just before tightening of the cap 3 is completed, causing the user to feel a clicking vibration.

[0055] The alarm mechanism includes a first protrusion 81 provided on the outer periphery of the lower end of the mouth portion 6 and a second protrusion 82 provided on the inner periphery near the lower end of the cap 3. In the illustrated embodiment, the first protrusions 81 are spaced apart in the circumferential direction, and the second protrusions 82 are spaced apart in the circumferential direction. More specifically, four first protrusions 81 are spaced apart in the circumferential direction at 90° intervals, and twelve second protrusions 82 are spaced apart in the circumferential direction at 30° intervals. The numbers of the first and second protrusions 81, 82 may be any appropriate number, and may be either an even number or an odd number. In one embodiment, the number of second protrusions 82 may be an integer multiple of the number of first protrusions 81, or the number of first protrusions 81 may be an integer multiple of the number of second protrusions 82. In another embodiment, the number of first protrusions 81 may be even and the number of second protrusions 82 may be odd, or the number of first protrusions 81 may be odd and the number of second protrusions 82 may be even.

[0056] The first protrusions 81 are configured as convex portions similar to the positioning stoppers 63 in the first embodiment, and two of the four protrusions 81 are provided at the same circumferential positions as the corresponding engagement protrusions 61.

[0057] The first protrusion 81 is provided below the female screw receiving space 62 and radially outward of the engaging protrusion 61. The first protrusion 81 may be provided at a position offset by a predetermined angle from the engaging protrusion 61 in the circumferential direction.

[0058] Each protrusion 82 is configured as an arc-shaped convex portion when viewed from the underside, and the inner diameter of the top of the second protrusion 82 is slightly smaller than the outer diameter of the outer end of the first protrusion 81. As a result, when the cap 3 is rotated with the first and second protrusions 81, 82 overlapping in the axial direction, the cap 3 undergoes a slight elastic expansion and deformation when the second protrusion 82 climbs over the first protrusion 81, and when the second protrusion 82 climbs over the first protrusion 81, the first protrusion 81 fits between the two adjacent second protrusions 82, and the cap 3 is restored to its original deformation.

[0059] According to the tube container of this second embodiment, the cap 3 can be tightened until the upper surface of the mouth portion 6 abuts airtightly against the top surface of the cap 3 (the lower surface of the partition wall 32 in the illustrated example), eliminating the need to provide the midfoot portion 35 of the first embodiment, thereby simplifying the structure of the cap 3 and reducing manufacturing costs.

[0060] The present invention is not limited to the above embodiment and can be modified as appropriate. For example, instead of rolling, the female thread receiving space 62 may be formed in the vertical middle of the vertical rib 66 by an appropriate method such as forging or cutting. Furthermore, although the engaging protrusion 61 is formed by a flat engaging piece extending horizontally in the above embodiment, it can also be formed with a partial spiral structure that is inclined along the inclination of the female thread, and such an engaging protrusion 61 with a partial spiral structure can also be formed by rolling the vertical rib 66. [Explanation of symbols]

[0061] 1 tube container 2 Metal tube container body 3 Cap 33 Internal thread 34 Engagement portion 6 Mouth 61 Engagement protrusion 62 Female thread receiving space 63 Positioning stopper 66 Vertical rib

Claims

1. A tube container comprising a metal tube container body having a cylindrical mouth portion with an open end at the top end, and a cap removably screwed onto the mouth portion, The cap has an internal thread on its inner periphery, A tube container in which a plurality of engaging protrusions that engage with the female screw are integrally formed on the outer periphery of the mouth portion and spaced apart circumferentially, and a female screw receiving space that can receive the female screw is formed below each engaging protrusion so as to open radially outward and circumferentially.

2. 2. The tube container according to claim 1, wherein the female thread is a multiple-start thread, and the number of the plurality of engaging projections is equal to the number of threads of the multiple-start thread.

3. a positioning stopper for positioning the cap at a cap tightening completion position is provided on the outer periphery of the mouth portion, below the female screw receiving space, at a predetermined circumferential position corresponding to the circumferential position of one of the plurality of engagement protrusions; 2. The tube container according to claim 1, wherein an engaging portion is provided near the lower end of the cap, which engages with the positioning stopper when the cap is at a position where fastening is completed.

4. a plurality of positioning stoppers for positioning the cap at a cap tightening completion position are provided on the outer periphery of the mouth portion below the female screw receiving space and at predetermined circumferential positions corresponding to the circumferential positions of the plurality of engagement protrusions, 2. The tube container according to claim 1, wherein the cap has a plurality of engaging portions on its inner periphery near its lower end, the engaging portions corresponding to the circumferential positions of the positioning stoppers, and adapted to engage with the positioning stoppers at the cap tightening completion position.

5. The tube container according to claim 3 or 4, wherein the positioning stopper is provided at the same circumferential position as any one of the plurality of engaging protrusions.

6. A method for manufacturing the metal tube container body according to claim 1, an impact extrusion molding process for extruding a metal extruded tube; a post-processing step of forming the metal tube container body by post-processing the extruded metal tube, a second end of the first longitudinal rib extending from the first end of the second longitudinal rib to the second end of the third longitudinal rib; a second end of the first longitudinal rib extending from the first end of the second longitudinal rib to the second end of the third longitudinal rib; a third end of the second longitudinal rib extending from the first end of the second longitudinal rib to the second end of the third longitudinal rib;

7. 7. The method for manufacturing a metal tube container body according to claim 6, wherein the post-processing step is a rolling step for forming the female screw receiving space in the vertical midpoint of the vertical rib by rolling.

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