JPH0798546B2 - Multi-chamber tube container and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention provides two or more kinds of contents (paste, cream, jelly) having different colors and properties of cosmetics, daily necessities and adhesives. The present invention relates to a multi-chamber tube container that can be separately stored and poured out at the same time, and a manufacturing method thereof.

(Prior Art) The applicant of the present application filed Japanese Utility Model Application No. 62-191618 (Japanese Patent Application No. 1-9686).
No.) proposed a two-chamber container in which the semi-circular neck of the inner container is inserted into the neck of the outer container, protruded from the mouth end of the outer container, and the outside is covered with a fixed inner stopper to integrate the two containers. . In the container, the body of the inner container is formed in a substantially semicircular shape, because the inner container is efficiently filled from the end side after the containers are assembled.

Then, as a method of forming the body part in a semi-circular shape, a method of extruding in a semi-circular cross section with an extruder and a round pipe extruded by a normal extrusion method, and then cut to a desired length, There are two methods of forming the head and processing the body into a semicircular section by thermocompression bonding, etc. The former method uses an extrusion die with a special structure to extrude the semicircular body. The latter method requires equipment such as a thermocompression bonding device and a processing step.

Further, in the above-mentioned proposal, the neck of the inner container is projected above the neck of the outer container. The reason is that after fixing the fixed inner stopper to the neck of the outer container in advance, the inner stopper is passed through the neck of the inner container. Because it can be fixed to. That is, it is set with a structure in mind that allows easy combination work of both containers.

In this two-chamber container, the fitting of the neck of the inner container and the fixed inner stopper is performed at the upper part of the arc, and the fitting structure is not such that the semicircular neck is pressed toward the arc-shaped fitting part. There is an advantage that work can be performed easily.

In this two-chamber container, the structure is such that after the mouth of the container is sealed with a cap, the inner container is filled with the contents from the body end, then the outer container is filled with the contents, and after that, The body ends of both containers are sealed by means such as a heat sill.

(Problems to be Solved by the Invention) However, it was known from the subsequent research that the two-chamber container had some points to be improved, including the manufacturing method thereof.

First, in manufacturing the above-mentioned two-chamber container, a special extrusion die is required to mold the semi-circular body of the inner container, and in the head forming step after extrusion, the body shape and the head shape match. A mold alignment device is required, which results in a head forming machine with a complicated structure and requires a high capital investment.
Further, since it takes time to align the body part and the head forming mold, the production amount per unit time is low and the product cost is high.

On the other hand, a thermocompression bonding device and a blowing process are also required when processing into a semi-circular body after extrusion and head formation.

As described above, the formation of the semi-circular body causes a problem that cost cannot be coped with the recent industry trend of low-volume production.

Furthermore, regarding the container itself, since the mouth of the container projects from the mouth of the outer container, only the contents of the inner container are poured out when first squeezing out, and when squeezing is stopped,
It has been found that the backflow of the contents is likely to occur in the inner stopper, and the contents of the inner container are easily mixed into the outer container side.

In addition, in the case of a transparent inner stopper, it may be seen that the mouth of the outer container and the inner container have a stepped shape is not preferable.

Further, as described above, since the neck portion of the inner container and the inner stopper are fitted at the upper portion of the arc, the combination work is easy, but the rotation efficiency is low, so that the neck portion or the middle portion is affected by the chemical action of the contents. When the stopper is softened, the neck portion of the inner container may be disturbed from the originally fixed position.

Also, since the inner plug must be able to cover the neck of the inner container protruding from the neck of the outer container, the height of the inner plug is relatively high, and the side wall of the inner plug is outward by tightening the cap. It easily swells and the end point of tightening the cap is not clear.

Furthermore, since two chambers must be sealed at the same time, when end-sealing the body ends with each other, if the volume balance of each chamber is improper, etc., the contents will get caught in the sealing part and the seal will be defective. It is easy to become.

(Means for Solving the Problem) The present invention comprises an outer container and an inner container, wherein the outer container and the inner container are integrated by a fixed inner stopper above the neck portion of the outer container. In order to solve the above-mentioned problems found in a multi-chamber tube container sealed by a cap attached to the inner container, the neck part of the inner container is fitted into the neck part of the outer container, and it is provided so as to project into the opening part of the neck part of the outer container. The neck portion of the inner container comes into contact with the stepped portion so that the inner container is circumferentially fixed, and the fixed inner stopper is locked on the upper and outer sides of the heads of the inner container and the outer container, and the inner container is axially moved. It is fixed and the openings of the outer and inner containers are sealed by removable inner stoppers, the end faces of the openings are located in substantially the same plane, and the body of the inner container has a circular cross section. The inner and outer container end seals are made substantially parallel to each other. It was decided to adopt a configuration that have been made.

Further, the present invention is, as a manufacturing method thereof, in which an inner plug is attached to an opening of an inner container whose body portion is made of a pipe having a circular cross section, and the inner container is filled to form an end seal portion and hermetically sealed. The sealed inner container is attached to the outer container, the outer container and the inner container are integrated with a fixed inner stopper, the cap is attached to the outer container, and the outer container is filled with contents to form an end seal part. I did it.

(Operation) Since the multi-chamber tube container of the present invention has the above-mentioned structure, it prevents the contact between the stepped portion of the outer container and the neck portion of the inner container to move the inner container in the circumferential direction, and fixes the inner container. The inner stopper prevents the inner container from moving axially. Also, since the openings of the inner and outer containers are closed by removable inner stoppers, when the contents are first squeezed out, the contents of the inner and outer containers are simultaneously poured out, and the openings of the inner and outer containers are Since the end faces are in the same plane, when the squeezing is stopped, the contents do not mix even if they flow backward. Furthermore, since the body of the inner container is made of a pipe with a circular cross section, the inner container is easy to manufacture, and since the end seals of the inner and outer containers are formed substantially parallel to each other, the body is squeezed. It is easy to do and the contents are poured out smoothly.

Further, since the method for producing a multi-chamber tube container of the present invention has the above-mentioned configuration, when filling the contents in the inner container and when filling the contents in the outer container having the inner container attached, Certain filling devices can be used and conventional devices can be used to form the end seals. In addition, there is no fear of a defective seal such as the contents penetrating into the seal portion.

(Example) (Example 1) The two-chamber container 1 of this example is composed of an outer container 2, an inner container 3, an inner stopper 4, a fixed inner stopper 5 and a cap 6.

Structure of outer container The outer container 2 is composed of a first shoulder portion 9 and a first neck portion 10 formed by injection-molding a similar resin on one end of a first body portion 7 made of a low-density polyethylene thin-walled extruded pipe and having an outer diameter of 35 m / m. The first head portion 8 is bonded and integrated at the outer peripheral end of the first shoulder portion 9, and the cross-sectional shape of the first body portion 7 is round. The inside of the first neck 10 is hollow, and a cut step 14 is provided at the upper end of the first neck 10, and a semicircular portion having a small radius is erected. Further, a semicircular cut 13 is formed in the upper portion of the first neck 10. There is.

Further, on the outer surface of the semicircular portion above the first neck portion 10, the first collar portion is formed.
15 and a first concave portion 16 are formed, and a semicircular first opening 12 and a flange portion 18 projecting inward are formed inside thereof.

A male screw portion 17 for screwing and fixing the cap 6 is formed on the lower outer surface of the first neck portion 10.

Structure of Inner Container The inner container 3 is a thin extruded circular pipe made of the same material as the outer container 2 and made of a thin extruded circular pipe with an outer diameter of 25 m / m. Shoulder 21
The second head portion 20 including the second neck portion 22 and the second neck portion 22 is fixed to the integral structure.

The second neck portion 22 is longer than the first neck portion 10, has a semicircular cross-sectional shape that is large enough to fit in the cutout portion 13 of the first neck portion 10, and the inside has a hollow shape similar to the outside shape. Second opening
24 is formed, and the arcuate mouth forming the second opening 24 has a stepped shape projecting inward at a position slightly lower than the upper end.

When the second flange portion 25 and the second recess portion 26 are formed on the outer surface of the arc portion on the outer side of the upper portion of the second neck portion 22, and the second flange portion 25 is combined with the outer container 2, the second flange portion 25 has the first flange portion 15 and the second recess portion 26. Is formed so as to be continuous with the first recess 16 in an annular shape.

The second neck portion 22 is continuous with the second shoulder portion 21 at the lower portion,
The shoulder portion 21 is formed in a semicircular shape extending outwardly and is continuous with the upper end of the second body portion 19 at the outer peripheral end.

The second shoulder portion 21 is formed so that a portion connecting the lower chord portion continuing to the second body portion 19 and the upper chord portion continuing to the second neck portion 22 is steeper than the semicircular portion, and the second head portion 20 is formed. Are combined in a position offset to the inside of the first head 8, and the first neck 10 and the first shoulder 9 are combined.
Is formed so as to contact the inside of the.

Since the second body portion 19 is not processed to have a semicircular cross section, the second body portion 19 has a circular shape in the lower portion, and becomes closer to the shape of the second shoulder portion 21 as it moves upward.

Configuration of inner stopper The outer shape of the flat cover plate 27 of the inner stopper 4 is a shape that closes the second opening 24 and covers the first opening 12 adjacent to the second opening 24. A fitting wall 28 that can be fitted into 24 hangs down in a semicircular shape, and the lower end of the arc-shaped portion of the fitting wall 28 is locked in the opening 24 when fitted into the second opening 24 of the inner container 3. So that it projects slightly outward. A handle portion 29 is provided upright from the center of the outer surface of the cover plate 27.

Structure of fixed inner stopper The fixed inner stopper 5 has a substantially cylindrical shape of a pre-taken shape, and an inner protruding portion 31 that fits into the recessed portions 16 and 26 of the outer container is formed inside the lower inner surface of the side wall portion 30. , An inner groove 32 for receiving the collar portions 15 and 25 of the outer container is formed in an annular shape, and the inner plug 5 is attached to the neck portion 1.
The outer container 2 and the inner container 3 are integrated by being covered with 0 and 22, so that they are not separated vertically.

Structure of Cap The cap 6 has a structure in which an inner cylinder portion 35 having a female screw portion 36 that can be screwed into a male screw portion 17 formed on the outer surface of the first neck portion 10 of an outer container is hung from a ceiling portion 34. In this structure, the spout 33 is closed by the ceiling 34 by tightening the cap 6.

Manufacturing Method The manufacturing method involves the following steps.

First, the inner plug 4 is fitted into the second opening 24 of the inner container 3, and the stepped portion formed inside the opening 24 is made to engage the protruding portion of the fitting wall 28 to fix the second opening 24. After closing, the second chamber 23 is filled with a desired content from the lower end open portion of the second body portion 19, and the lower end portion is closed by a method such as heat sealing.

Next, the filled and sealed inner container 3 is inserted from the lower end open portion of the first body portion 7 of the outer container 2 with the second head portion 20 as the head, and the second neck portion 22 is fitted so as to be located in the cutout portion 13. When it is inserted, both ends of the chord portion of the second neck portion 22 are brought into contact with the cut portion step portion 14 to be positioned, and a part of the second shoulder portion 21 in the arc direction comes into contact with the inner surface of the first shoulder portion 9 to stop the fitting.

At this time, as shown in FIG. 6, the first collar 15 of the first neck 10
And the first concave portion 16 are continuous with the second flange portion 25 and the second concave portion 26 of the second neck portion 22, respectively, and these are formed in an annular shape.

The cover plate 27 of the inner plug 4 extends into the first opening 12 and closes the first opening 12. That is, the end portion of the cover plate 27 is in close contact with the lower surface of the inner flange portion 18 formed inside the upper end of the first neck portion 10, and even if internal pressure is applied from the first chamber 11, the filling content of the first chamber 11 becomes first. 1 No leakage from the opening 12.

Next, cover the necks 10 and 22 with the fixed inner stopper 5 and form annular recesses 16 and 26.
The inner protruding portion 31 formed on the side wall portion 30 is fitted in the inner container 3 and at the same time, the flange portions 15 and 25 are locked in the inner groove 32 so that the inner container 3 becomes the outer container 2.
Prevent it from falling out.

At this time, from the spout 33 of the fixed inner stopper 5 to the handle portion of the inner stopper 4.
The upper part of 29 is popping out so that it can be pinched by hand.

The combined state of the first body portion 7 and the second body portion 19 is such that the end seal portion 37 of the second body portion 19 is above the lower end portion of the first body portion 7 and the intermediate point of the end seal portion 37 is A position deviated from the axial center of the first body portion 7, that is, the second body portion 19 is fixed at an offset position in the first body portion 7, and the outer surfaces of the first body portion 7 and the second body portion 19 make the first chamber 11 is formed.

Next, cover the first neck 10 with the cap 6 and engage the male screw part 17 with the female screw part 36, rotate the cap 6 to the right, and seal the spout 33 of the fixed inner stopper 5 with the ceiling part 34 of the cap 6. To do.

After that, the planned contents are filled in the first chamber 11 from the open lower end of the first body portion 7, and the lower end is sealed by a method such as a heat sealing method. The end seal portion 37 of the first body portion 7 formed at this time is formed substantially parallel to the end seal portion 37 of the upper second body portion 19.

How to take out the contents To take out the contents from the two-chamber container 1 of this embodiment, the cap 6 is turned counterclockwise to remove the cap 6 from the two-chamber container 1 and the handle of the inner plug 4 protruding from the spout 33. Pull up part 29. Then, the central portion of the cover plate 27 is deformed upward, and the end of the cover plate 27 is disengaged from the inner flange 18 by the reaction thereof, and the protruding portion of the fitting wall 28 is disengaged from the inner surface step of the second opening 24. The inner plug 4 is removed from the spout 33.

Then, if both side surfaces of the first body portion 7 are squeezed, the contents of the chambers 11 and 23 pass through the openings 12 and 24 and move to the spout 33, and the contents of a semicircular cross section are matched with each other at the chord portions. It is poured in a round shape.

After the contents have been poured out, both caps are screwed into the male screw part 17 of the first neck 10 to close the pouring port 33 with the ceiling part 34, and the inner plug 4 once removed is attached to the opening parts 12 and 24. Discard it.

As described above, in this embodiment, as in the conventional product, the second body
No. 1 chamber without processing so that the cross section of 19 becomes semicircular
11 filling spaces can be secured, and the contents 3 and the outer container 2 can be filled with a normal filling machine for single contents. After sealing the inner container 3 further filled with the contents, the outer container 2
In this case, since the first chamber 11 formed between the outer container 2 and the inner container is filled with the contents and end-sealed, the end-sealing portions 37 of the respective containers 2 and 3 are formed separately, which is different from the conventional product. In addition, no defects occur in the seal part.

Moreover, since the upper parts of the necks 10 and 22 of the respective containers 2 and 3 are grasped by the fixed inner stopper 5 at the same height position, the fixing ability is high,
As for the shape of the fixed inner stopper 5, since the upper parts of the necks 10 and 22 can be grasped at the same height position, the whole height can be lowered, and the deformation can be prevented. Therefore, the repulsive force against the tightening force of the cap 6 is large. The sealing property of the outlet 33 is improved.

(Embodiment 2) Each of the three-chamber containers 38 of this embodiment includes an outer container 39, a first inner container 40,
The second inner container 41, the inner stopper (A) 42, the inner stopper (B) 43, the fixed inner stopper 5, and the cap 6 are provided. Figures 8 to 15
In the figure, 5 to 26 and 30 to 37 indicate the same parts as those of the first embodiment, and the points different from the first embodiment, such as the configuration of each part and the fitting state, or the features thereof will be focused. I will describe it.

Structure of outer container At the upper part of the first neck 10, the cutout 13 is provided in the range of 240 degrees, and the first flange 15, the first recess 16, and the inner flange 18 are provided in the range of 120 degrees. The end faces of are cut to form the cut step portion 14 (which is also the end portion of the cut portion 13).

The material, manufacturing method, and other structures of the outer container 39 are the same as in the first embodiment.

Configuration of the first inner container The cross section of the second neck portion 22 and the second shoulder portion 21 is a fan shape having a central angle of 120 degrees, and the side portion 52 connecting the base point of the radius from the arc end to the second neck portion 22 is second. A nearly vertical surface is formed over the shoulder 21.

When the second neck portion 22 is fitted into the cutout portion 13 of the first neck portion 10, at least a part of the second shoulder portion 21 abuts on the inner surface of the first shoulder portion 9, and the second collar portion 25 and the second recessed portion. Reference numeral 26 is a structure in which the first flange portion 15 and the first recessed portion 16 are annularly continuous. The second body portion 19 and the third body portion 44 described later have an outer diameter of 19 m / m, and the material, manufacturing method, and other shapes of the first inner container are the same as in the first embodiment.

Configuration of Second Inner Container The second inner container 41 has exactly the same structure as the first inner container 40.

Structure of inner plug (A) The cover plate (A) 53 has a semi-circular shape. When the arc portion is arranged on the right side as shown in FIG. 11, a fan-shaped fitting wall (A) 54 is hung down on the front side. In addition, a handle portion (A) 55 is erected at a substantially central portion. The arcuate portion of the fitting wall (A) 54 is arranged in the direction of the arcuate portion of the covering plate (A) 53, and has a portion that slightly protrudes outside the lower end thereof.

Structure of the inner plug (B) The inner plug (B) 43 has a line-symmetrical shape with the inner plug (A) 42, and when the arc portion of the cover plate (B) 56 is arranged on the left side as shown in FIG. A fan-shaped fitting wall (B) 57 is hung on the front side.
Further, when the straight portions of the inner stopper (A) 42 and the inner stopper (B) 43 are aligned with each other in the substantially central portion, the handle portion (A) 55 of the inner stopper (A) 42 and the handle portion (B) continuous to the left and right. 58 are set up.

At the lower end of the fitting wall (B) 57, there is a slightly protruding portion as in the case of the inner plug (A) 42.

Configuration of Fixed Inside Plug The fixed inside plug 5 has the same configuration as in the first embodiment.

Structure of Cap The cap 6 has the same structure as that of the first embodiment.

Manufacturing Method The manufacturing method is performed according to the method according to Example 1, but the first inner container 40 and the second inner container 41 are filled with the contents,
The second and third openings 24 and 49 are sealed by the same method as in the first embodiment.
After inserting and sealing the inner plug (A) 42 and the inner plug (B) 43, respectively, the intended contents are filled in the respective containers 40 and 41, and the end seal portion 37 is formed to form the body portions 19 and 44. Seal the bottom open end of the.

In the first inner container 40, the end seal portion 37 is formed by crushing and melting the lower end of the body portion 19 so as to be parallel to the line connecting the arcuate portion of the second shoulder portion 21 and the side portion 52 and crimping. Then do it.

In the second inner container 41, the end seal portion 37 has the third shoulder portion 46.
The lower end of the body portion 19 is crushed, melted and crimped so as to be parallel to the line connecting the center of the arc portion and the center of the side portion 52.

Next, the first inner container 40 and the second inner container 41 whose contents are sealed are combined with the first outer container 39.

This penetrates the inner surface of the first neck 10 in the direction in which the arc portion of the second neck 22 is aligned so that the second neck 22 is located in the cutout 13 of the outer container 39, and the side portion 52 cuts out the stepped portion 14. The second inner container 41 is combined with the second inner container 41 by bringing the second inner container 41 into one of the cutout portions 13 so as to come into contact with the first inner container 41.

Similarly to the above, the second inner container 41 is such that the arc portion of the third neck portion 47 coincides with the inner surface of the first neck portion 10 and the second inner container 40 has a second side portion 52 at the side portion 52.
The inner container 41 is assembled so that the sides 52 thereof match.

This combined state is shown in FIG. 14, but since one side portion 52 of the first inner container 40 and the other side portion 52 of the second inner container 41 are in contact with each other and the other side portion 52 is in contact with the cut step 14, The first neck 10 and the second and third necks 22, 47 are positioned so as not to move in the same direction. Further, the string portions of the cover plates (A) 53 (B) 56 of the inner stoppers (A) 42 and (B) 43 are in contact with each other, and the handle portions (A) 55 and (B) 58 are also in contact with each other, and Cover plate (A) 5
3, the end of (B) 56 is in contact with the lower surface of the inner flange 18 of the first neck 10.

While maintaining this state, as in the first embodiment, the fixed inner stopper 5 is covered and the first neck portion 10, the second neck portion 22, and the third neck portion 47 are connected to each other and fixed so as not to be displaced in the vertical direction. Cervical 10,22,47
The fitting state of the fixed inner stopper 5 and the fixed inner stopper 5 is the same as that of the first embodiment, and the spout
The upper parts of the handle parts (A) 55 and (B) 58 are exposed from 33.

Also, the end seal portions 37 of the first inner container 40 and the second inner container 41 are positioned substantially parallel to each other, and these end seal portions 37 are located above the lower end portion of the first body portion 7 as in the first embodiment. Is located in.

Next, after screwing the cap 6 in the same manner as in the first embodiment, the planned content is filled into the first chamber 11 from the open lower end of the first body portion 7 as in the first embodiment. The end seal part 37 is formed and sealed by a method such as a heat seal method. The end seal portion 37 of the outer container 39 includes a first inner container 40 and a second inner container 41 to be enclosed.
The first body portion 7 should be parallel to the end seal portion 37 of the
The lower end of is crushed and formed.

How to take out the contents To take out the contents from the three-chamber container 38 of the present embodiment, the cap 6 is detached and the inner stoppers (A) 42, (B) 55 protruding from the pouring port 33 are removed as in the first embodiment. Handle part (A) 55,
(B) 58 is pulled up and inner plugs (A) 42 and (B) 43 are spouted
By pulling out from 33, opening the openings 12, 24, 49 of the containers 39, 40, 41 and squeezing the first body part 7, external pressure is also transmitted to the second body part 19 and the third body part 44. The contents can pass through the openings 12, 24, 49 and be taken out from the spout 33.

The poured contents have a round appearance, but every 120 degrees, three kinds of contents are poured in a vertical stripe shape, and a unique effect is obtained.

After the contents are taken out, resealing is performed by screwing the cap 6 onto the first neck portion 10 and closing the spout 33 with the ceiling portion 34 as in the first embodiment.

As described above, in this embodiment, the second body portion 19 and the third body portion 44 are
Since a filling space for the first chamber 11 can be secured without processing the fan into a fan-shaped cross section, no special filling equipment is required.

Also, since the collar portions 15, 25, 50 and the recess portions 16, 26, 51 of the neck portion 10, 22, 47 are continuous in the circumferential direction and are gripped by the fixed inner stopper 5, there is no positional deviation in the direction parallel to the shaft center. Cut-off step of the first neck 10
Since the second neck portion 22 and the side portion 52 of the third neck portion 47 contact the 14,
A stable fitting structure that does not move in the circumferential direction can be obtained.

In the present embodiment, the cutout portion 13 in the range of 240 degrees is provided and the first inner container 40 and the second inner container 41 are fixed to this portion,
A multi-chamber container having a four-chamber structure can be manufactured if the cutout 13 has a range of 270 degrees and the first and second inner containers having the cross-section of the neck in the range of 90 degrees are fixed to the cutout 13. can do.

(Embodiment 3) Reference numerals 4 to 36 in FIGS. 16 to 18 showing the present embodiment indicate Embodiment 1
It shows the same part as.

In the present Example 2, the chamber container 59 is the first chamber 11 when the contents are poured out.
The structure prevents the contents filled in the inside of the first neck 8 from entering the gap between the inner surface of the first neck 8 and the outer surface of the second neck and leaking outward from the lower portion of the fixed stopper 5.

In the structure for preventing the leakage of the contents, a semi-circular cutout 62 is formed inside the cutout 13 of the first neck 10 to form a stepped shape. The second neck portion 22 of the inner container 61 is the second in the arc portion.
A semi-circular protrusion 63 is provided below the recess 26. The half-circumferential projection 63 has a shape projecting outward from the second flange 25.

Other than these, the shapes of the outer container 60 and the inner container 61 are the same as those in the first embodiment. When the outer container 60 and the inner container 61 of this embodiment are combined, the second neck portion 22 is passed through the inside of the first neck portion 10 and the cutout portion 13 is formed.
The second brim portion 25 is mounted so that the second brim portion 25 is located in the direction of, and at the end of the mounting operation, the half-circumferential projection 63 is fitted into the semi-circular cutout portion 62 while elastically deforming.

The state in which the outer container 60 and the inner container 61 are combined is shown in FIG.
The semi-circular cutout portion 62 is closely combined with the semi-circular projection portion 63, and the upper surface of the combined surface is covered with the lower surface of the fixed inner stopper 5 to further enhance airtightness.

The openings 12 and 24 are closed with the inner plug 4, and the spout 33 is capped with the cap 6.
The structure for sealing with is similar to that of the first embodiment, but in this embodiment, the airtightness of the chambers 11 and 23 can be enhanced by setting the outer container 60 and the inner container 61 as described above. It can prevent the leakage of things.

In this embodiment, the outer container 60 has a stepped semicircular cutout 62.
A half-circumferential protrusion 63 that matches the notch 62 in the inner container 61.
, Respectively, the outer container 60 may be provided with a semi-circular protrusion, and the inner container 61 may be provided with a semi-circular cutout, in short, the airtight portion that is in intimate contact has a concave-convex shape or a convex portion on a planar portion. A structure such as abutting is formed on the inner surface of the mouth.

(Effect of the invention) Since the multi-chamber tube container of the present invention has the above-mentioned structure, the inner container is firmly attached to the outer container, and there is no risk of the inner container coming off. Also, there is no risk of pouring out or mixing only one type of content. In addition, the inner container can be easily manufactured at low cost, the contents can be smoothly poured out without fear of seal failure, and the height of the fixed inner stopper can be lowered, so that the cap can be securely tightened and the sealing effect can be obtained. Has improved.

According to the method for producing a multi-chamber tube container of the present invention, since the conventional manufacturing apparatus can be used, the manufacturing cost is reduced, and the occurrence of sealing failure is eliminated.

[Brief description of drawings]

1 to 7 show a multi-chamber container of Example 1, FIG. 1 is a partially cutaway perspective view showing the structure of an outer container, and FIG. 2 is a partially cutaway perspective view showing the structure of an inner container. FIG. 3 is a partially cutaway perspective view showing the structure of the inner plug, FIG. 4 is a perspective view showing a state in which the inner plug is attached to the inner container and the contents are filled and end-sealed, and FIG. 5 is a neck portion of the inner container. FIG. 4 is an enlarged cross-sectional view of the Z portion of FIG. 4 showing the fixed state of the inner stopper, FIG. 6 is an exploded perspective view showing the process of combining the container, the fixed inner stopper, and the cap, and FIG. 7 is the multi-chamber container of Example 1. It is sectional drawing which shows a structure, FIGS. 8-15 has shown the multichamber container of Example 2, FIG. 8 is a partially cutaway perspective view which shows the structure of an outer container, FIG. 9 is a 1st content. FIG. 10 is a perspective view showing the structure of the second inner container, FIG. 11 is a perspective view showing the structure of the inner stopper (A), and FIG. 12 is the inner stopper (B). Shows the structure of Fig. 13 is a perspective view showing a state in which the inner plug (A) is attached to the first inner container, and the contents are filled and then end-sealed. Fig. 14 shows the first inner container filled with the contents. 16 is a partially cutaway perspective view showing a state in which the second inner container is combined with the outer container, and FIG. 15 is a partially cutaway perspective view showing the structure of the multi-chamber container of the second embodiment. Shows a multi-chamber container of Example 3. FIG. 16 is a partially cutaway perspective view showing the structure of the outer container, FIG. 17 is a partially cutaway perspective view showing the structure of the inner container, and FIG. FIG. 11 is a partial cross-sectional view showing a main part of a multi-chamber container of Example 3. 1: Two-chamber container, 2: Outer container, 3: Inner container, 4: Inner stopper, 5: Fixed inner stopper, 6: Cap, 7: First body part, 8: First head part, 9: First shoulder Part, 10: first neck part, 11: first chamber, 12: first opening part, 13: cutout part, 14: cutout step part, 15: first flange part, 16: first recessed part, 17: male screw part , 18: Inner collar part, 19: Second body part, 20: Second part
Head, 21: second shoulder, 22: second neck, 23: second chamber, 24: second
Opening part, 25: Second flange part, 26: Second recess part, 27: Cover plate, 28: Fitting wall, 29: Handle part, 30: Side wall part, 31: Inner protrusion part, 32: Inner groove, 33 : Spout, 34: Ceiling part, 35: Inner tube part, 36: Female thread part, 37: End seal part, 38: Three-chamber container, 39: Outer container with flange part formed within 120 degrees, 40: The first inner container with the flange portion formed in the range of 120 degrees, 41: The second inner container with the flange portion formed in the range of 120 degrees
Inner container, 42: Inner stopper (A), 43: Inner stopper (B), 44: Third body, 45: Third head, 46: Third shoulder, 47: Third neck, 48: Third
Chamber, 49: Third opening, 50: Third flange, 51: Third recess, 52: Side, 53: Cover plate (A), 54: Fitting wall (A), 55: Handle (A) , 56: Cover plate (B), 57: Fitting wall (B), 58: Handle part (B), 59: Two-chamber container with improved airtightness, 60: Outer container having a half-round cutout part, 61: Half-round Inner container having protrusions, 62: half-circumferential notch, 63: half-circumferential protrusion.

Claims (2)

[Claims] 1. An outer container and an inner container, wherein the outer container and the inner container are integrated by a fixed inner stopper above the neck of the outer container and the inner container, and sealed by a cap attached to the outer container. In a multi-chamber tube container, the neck of the inner container is inserted into the neck of the outer container, and the neck of the inner container abuts on the stepped portion that is provided so as to project into the opening of the neck of the outer container. The inner container is fixed in the circumferential direction, and the inner container is fixed axially above and outside the neck of the inner and outer containers, and the inner container opening of the outer container is removable. The inner surface of the inner container is made of a pipe having a circular cross section, and the end seal portions of the inner container and the outer container are substantially A humid tube container characterized by being formed in parallel. 2. An outer container and an inner container, wherein the outer container and the inner container are integrated by a fixed inner stopper above the neck of the outer container and the inner container, and sealed by a cap attached to the outer container. In a method for producing a multi-chamber tube container, an inner plug is attached to the opening of an inner container whose body is made of a pipe having a circular cross section, and the inner container is filled to form an end seal part, which is then sealed. The inner container is attached to the outer container, the outer container and the inner container are integrated with a fixed inner stopper, the cap is attached to the outer container, and the outer container is filled with contents to form an end seal part. Characteristic multi-chamber tube container manufacturing method.