JPS63272670A - Preparation of tube container filling two kinds of contents - Google Patents

Abstract

PURPOSE:To efficiently and surely perform the filling of two kinds of contents in a divided state using an existing filling line, by differentiating filling periods and bringing the second container to an independent hermetically sealed container already filled with content before filling the first container with the first content. CONSTITUTION:The second injection port 24 is closed with a virgin seal 5 and the tail side opening part 52 of the second container 2 is turned upwardly to fill the second container 2 with the second content (b) from the tail side opening part 52 thereof and, thereafter, the second chamber welding part 42 is formed to close the second container 2. The second container 2 already filled with the content (b) is inserted in the tail side opening part 51 of the first container 1 from the head part 21 thereof and the engaging protruding part 23 of the second container 2 is pushed in the first container 1 along the inner surface of the first neck part 12 thereof. The engaging protruding part 23 is restored to the original shape and engaging parts 13, 23 are engaged with each other and, after the combination engagement of both containers 1, 2 are completed, a cap 3 is screwed to the first neck part 12 of the first container to close the first and second injection ports. After the first container 1 is filled with the first content (a) from the tail side opening part 51 thereof, the first chamber welding part 41 is formed to the tail part of the first container 1 to close the first container 1.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a method for separating two types of contents (paste, cream, jelly, etc.) with different colors and properties such as cosmetics, daily necessities, and adhesives. The present invention relates to a method for manufacturing a tube container filled with two types of contents, which is filled and stored in the same state.

(Prior Art) Conventionally, as a two-chamber tube container that secures two chambers using at least two tubes and pours out the contents from a head having two pouring ports, for example, the Utility Model Publication No. 58-1274
Publication No. 3, Publication No. 116555 of Utility Model Application No. 1983, Publication No. 116555 of Japanese Utility Model Application Publication No. 1983
Those described in Japanese Utility Model Publication No. 1-35154 and Japanese Utility Model Application Publication No. 61-90739 are known.

The reason why two different types of contents are filled into the individual chambers will be described below.

■ Pour contents of different colors in a predetermined pouring shape to obtain a unique color sensation.

■ Although they are used at the same time, items that undergo chemical reactions during storage are more stable for longer periods of time if they are stored separately.

If the contents are forcibly mixed with components with poor miscibility or monodispersibility, changes such as separation and solidification will occur during storage, so it is better to store each component separately.

(Problems to be Solved by the Invention) However, in any method for manufacturing a tube container filled with two types of contents, two tubes are used to separate two types of
After forming the chamber, use the two spouts on the head side of the container, or
Since a method was adopted in which two types of contents were simultaneously filled from two openings on the bottom side of the container, there were problems as described below.

■ In the former case of simultaneous filling of the spout, although the positional relationship of the spout is fixed, since the two spouts are located extremely close to each other, two kinds of contents are placed near the spout when filling the contents. It is easy to mix, and since the spout has a small opening area, it takes a long time to fill it.

■ In the case of the latter case where one part of the bottom side is filled at the same time, the opening area is wide and filling can be done in a short time, but the bottom side opening of each container made of flexible synthetic resin etc. The filling volume of each chamber is stable because the shape and positional relationship of the openings in the line are not fixed (due to the inner container being placed in various directions relative to the outer container, deformation due to external force, etc.) Because it cannot be secured, one of the contents tends to overflow or be partially mixed during filling, and furthermore, two types of contents that should be filled separately may end up being filled in a mixed state only in one chamber. be.

Furthermore, due to such abnormal filling, the body of each container in the vicinity of the butt opening becomes contaminated with the contents, leading to problems in welding of the ends, resulting in poor sealing and leakage of the contents.

(Method for Solving the Problems) The present invention has been made for the purpose of solving the above-mentioned problems. In a method for manufacturing a tube container filled with two types of contents, which includes a first container and a second container in which a content and a second content are separately filled, first, the first container as an outer container with a large internal volume is and a second container as an inner container with a small internal volume were manufactured, and then the spout of the second container was closed with a seal or the like, and the second content was filled from the rear opening of the second container. After that, close the bottom of the second container,
Next, insert the filled second container into the first container and fit the two containers together at the head, then close the two spouts with caps, etc., and insert the second container. The method is characterized in that after filling the IF contents from the rear opening of the first container, the rear end of the first container is closed.

(Function) In the method for manufacturing a tube container filled with two types of contents of the present invention,
Since the contents are filled from the rear opening with a wide opening area, many containers can be filled in a short time.

In addition, since the filling of the second content into the second container and the filling of the first content into the first container are performed at different times, the existing Two types of contents can be filled into the tube containers using the filling line.

In addition, the filling timing is different, and after the second container is made into an independent sealed container filled with contents, the first container is transferred to the first container side.
Since the contents are filled, the first
Even if the position of the second container is not determined to some extent within the container, the first contents will not be mixed into the second container, and the two containers can be reliably filled in a separated state.

Therefore, the method for manufacturing a tube container filled with two types of contents is efficient, does not cause product defects, and reliably fills two types of contents separately, even though the contents are filled using an existing filling line. can be provided.

(Example) Embodiments of the present invention will be described below based on the drawings.

First, the configuration will be explained.

As shown in FIGS. 1 to 4, the tube container A filled with two types of contents of the embodiment includes a first container 1 filled with one type of two types of contents having different colors and properties, and the other. a second container 2 and a cap 3 filled with one type of the first container l.
is an outer container with a large internal volume, the second container 2 is an inner container with a small internal volume, and the second container 2 is inserted into the first container 1 to combine the inner container 1.2. The head portions 11 and 21 of the first neck portion 12 and the second neck portion 22 are fitted and fixed to each other by the fitting concave portion 13 and the fitting convex portion 23 formed in the first neck portion 12 and the second neck portion 22, and the butt portions of the inner containers 1 and 2 are separately welded. A semicircular first spout 14 and a second spout 24 are formed at the welded portion 4) and the fitting and fixed portion between the first neck portion 12 and the second neck portion 22, respectively, and the virgin seal 5 is formed. The structure is such that the cap 3 seals the amphoteric outlet 14.24 through the cap 3.

Note that a first chamber 15 communicating with the first spout 14 is formed in the space formed by the combination of the bodies 16 and 26 of the first container 1 and the second container 2, and the inner space of only the second container 2 is A second chamber 25 communicating with the second spout 24 is formed.

As shown in FIG. 5, the first container l has a first head 11 (consisting of a first neck 12 and a first shoulder 17) integrally formed at one end of a thin first body 16. , or connected, and the first body 16 is made of a flexible material suitable for squeezing out the contents.

A fitting recess 13 (or a fitting protrusion protruding in the radial direction) for physically fixing the second neck 22 of the second container 2 is formed inside the first neck 12 in a semicircular shape, A male threaded portion 19 is formed on the outer surface of the first neck portion 12 for locking the cap 3 that seals the amphoteric outlets 14 and 24.

Note that the first head portion 11 and the first body portion 16 are integrally formed or connected from the first neck portion 12 to the cut end portion 16a of the first body portion 16.

As shown in FIGS. 6 and 7, the second container 2 has a second head 21 (second neck 22) at one end of a thin second body 26.
and a second shoulder portion 27) are integrally formed or connected, and the second body portion 26 (a semicircular portion 26a that fits into the inner surface of the first body portion 16 and a technical portion 26b located opposite thereto) are integrally formed or connected.
) is made of a flexible material suitable for squeezing out the contents.

A fitting recess 13 of the first neck portion 12 is provided on the outside of the second neck portion 22.
A fitting convex portion 23 (or a fitting recess) for physically fixing the second neck portion 22 to the second neck portion 22 is formed in a semicircular shape, and the outer diameter of the second neck portion 22 is set to be slightly smaller than the inner diameter of the first neck portion 12. has been,
The second neck 22 of the second container 2 is assembled to the first neck 12 of the first container 1 by utilizing the elasticity of the fitting projection 23.

The second head portion 21 and the second body portion 26 are integrally formed or connected from the second neck portion 22 to the cut end portion 26c of the second body portion 26.

As shown in FIG. 1, the cap 3 consists of a ceiling part 31 and a skirt part 32, and an internal thread part 33 is formed on the inner surface of the skirt part 32 to be screwed into the male thread part 19. .

Next, the effect will be explained.

First, the method for manufacturing the tube container A filled with two types of contents will be explained below in order of steps.

(a) Manufacturing process of inner container 1.2 and cap 3 The first container 1 and the second container 2 are manufactured using the materials and methods listed below.

■ Blow molding with a single layer structure of polyethylene, polypropylene, soft vinyl chloride, ethylene-propylene copolymer, polybutadiene resin, etc., and use of saponified ethylene-vinyl acetate copolymer, nylon, vinylidene chloride as a barrier material for these resins. , blow molding with a coextrusion composite structure combining acrylic-nitrile resin, etc. (
blow molded tube).

■ The body made of the above material is manufactured by extrusion molding, and one cut part is made of the same type of resin and injected.

Glue the head molded using a compression molding method (extrusion molded tube).

■ Glue the head molded using a known molding method such as injection molding or compression molding as described above to the body, which is made by rolling up a sheet of metal foil such as aluminum paper and the thermoplastic resin described above ( lamination tube).

The outer surface of the first container l is decorated with decorations such as offset printing, screen printing, painting, hot stamping, and thermal transfer printing in order to increase the product value or to increase the protection ability of the contents. It will be done. Also, printing,
It is also possible to attach a hot-stamped label or use a heat-shrinkable film as the label.

Cap 3 is made of polyethylene, polypropylene, ethylene-propylene copolymer, A, B.

Thermoplastic resins such as S and polystyrene are manufactured by injection molding.

(b) Step of filling the second container 2 with the second contents Before filling the second container 2 with the second contents, the second spout 24 is closed with a virgin seal 5 (FIG. 8).

Next, a large number of containers are lined up with the rear openings 52 of the second containers 2 facing upward, and while being transferred through the contents filling line, the filling nozzle 62 is used to fill the second contents from the rear openings 52. (Figure 9).

Next, the butt part of the second container 2 is connected to the semicircular part 26a and the technical part 26b.
The two chambers are aligned so as to face each other and welded using an ultrasonic sealing device to form a second chamber welded portion 42 and closed (FIG. 10).

(c) Assembling both containers 1 and 2 is a process at the rear opening 5 of the first container l manufactured by the method described above.
1, insert the second container 2 filled with contents from the head 21, and insert the fitting protrusion 23 of the second container 2 into the first neck 1 of the first container l.
2 while elastically deforming it (11th
figure).

When the fitting protrusion 23 reaches the position of the fitting recess 13, the fitting protrusion 23 is restored to its original shape, the fitting parts 13.23 are fitted, and the head portions of both containers 1.2 are fitted. Complete mating.

(d) Step of tightening the cap and filling the contents into the first container 1 Once the combined fitting of both containers 1.2 is completed as described above, the cap 3 is screwed onto the first neck 12 of the first container L. , close the first spout and the second spout (Fig. 12)
.

Next, a large number of containers are arranged with the rear opening 51 of the first container l into which the second container 2 has been inserted facing upward, and while being transferred through the filling line, the filling nozzle 61 is used to fill the opening 51 of the first container l with the rear opening 51 facing upward. The first contents a are then filled (Fig. 13).

Next, the butt part of the first container 1 is welded along the sealing surface of the second chamber welded part 42 using an ultrasonic sealing device to form the first chamber welded part 41 and closed. The above first chamber welding part 4
1, and a continuous welded part 44 is formed in a part or the entire area of the seal over part 43 between the first chamber welded part 41 and the second chamber welded part 42, and the inner surface of the 11i4 part 16 and It is also possible to have a structure in which the outer surface of the second body part 26 is welded (
Figure 14).

The case where the tube container A filled with two types of contents manufactured by the above method is used will be explained.

When the cap 3 is removed, the virgin seal 5 is peeled off, and the container body is crushed (squeeze), the first content a moves from the first chamber 15 to the first spout 14, and at the same time, the first content a moves from the second chamber 25 to the first spout 14. The second content is moved to the second spout 24, and as shown in FIG. 15, semicircular contents a and b are squeezed out from the spout 14 and 24, respectively.

As explained above, in the method of manufacturing the tube container A filled with two types of contents according to the embodiment, the following effects can be obtained.

■ Since both contents a and b are filled from the rear opening 51.52 with a wide opening area, the inner diameter of the filling nozzle 61.62 can be increased, and the amount of contents injected can be increased. can increase the content of both a and a in many containers in a short time.
Filling of b can be performed.

■ Filling the second container 2 with the second contents and the first container 1
Since the first content a is filled at different times, it is possible to fill the two types of content filling tube container A with the existing filling line with one filling nozzle. It can be done.

■ The filling timing is different, and the first container 1 is filled with the first content a after the second container 2 is made into an independent sealed container filled with contents, so Even if the position of the second container 2 in one container L is not determined to some extent, the first content a does not mix into the $2 container 2, and the two are reliably filled in a separated state. I can do it.

■ Since the heads of the first container 1 and the second container 2 are fitted and fixed to each other at the fitting portions 13.23 formed on the first neck 12 and the second neck 22, there is no need to add a separate partition member. ,2
Seed contents a and b can be completely separated, and by chemically reacting, it can be applied to contents that are not preferred to be mixed when stored in a container, and contents that are not preferred to be mixed in color.

■ It is also possible to connect and weld the bottoms of the first container 1 and the second container 2, so in this case, even if they are crushed when squeezing out the contents, the bodies 16 and 26 of both containers 1 and 2 will not separate or remain in position. There is no misalignment, and since the welding direction of the heat welding part 4 is along the welding part 26C which is the long diameter direction of the second body part 26, the contents of each chamber 15.25 can be accommodated in a gathered state. Squeezing can be ensured by crushing the bodies 16, 26 of the two-chamber tube container A.

Moreover, after the first chamber welding section 41 and the second chamber welding section 42 are welded, the seal over section 43 is welded at the continuous welding section 44, and the same place is not repeatedly heat welded, so that the welding section 4 high pressure resistance is ensured.

In other words, the pressure resistance of the welded portion depends on the tensile strength of the body parts 16, 26, so if the body parts 16, 26 at the same location
When welded again, the thickness of that part becomes extremely thin, making it easy to break and reducing the pressure resistance.

■ The fitting structure at both neck portions 12 and 22 is a concave-convex fitting structure, and when a tightening force is applied from the cap 3 to the second neck portion 22 side, it acts to increase the fitting strength. Therefore, high durability and divisibility of the contents can be ensured.

■ By controlling the thickness of the second container 2 or the size of each spout 14.24, the pouring ratio of both contents a and b can be freely changed.
The shape of both spouts 14.24 is not limited to the semicircular shape as in the embodiment, but can be made into a concentric circle shape, a striped shape, etc., so that both contents a
, b can be freely changed.

Although the embodiments have been described above based on the drawings, the specific method is not limited to these embodiments, and even if there are process changes or additions within the scope of the invention, the present invention include.

Further, the method of welding the butt portions 16a, 26c of each container 1.2 is not limited to the ultrasonic welding method, but can be performed by a thermal welding method, high frequency heating, or the like.

(Effects of the Invention) As explained above, in the method of manufacturing a tube container filled with two types of contents according to the present invention, the first container is an outer container with a large internal volume, and the inner container with a small internal volume is a first container. Next, the spout of the second container is closed with a seal or the like, and the second content is filled from the opening on the bottom side of the second container. Next, insert the second container filled with the contents into the first container and fit the two containers together at the concave-convex combination part of the head, then close the two spouts with a cap or the like, The method is characterized by filling the first content from the opening on the rear side of the first container into which the second container is inserted, and then closing the rear opening of the first container, so it can be used in existing filling lines. It is possible to provide a method for manufacturing a tube container filled with two types of contents, which is efficient, does not cause product defects, and is reliably filled with two types of contents separately. Effects can be obtained.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view showing a method for manufacturing a tube container filled with two types of contents according to an embodiment of the present invention, Fig. 2 is a plan view of the first container, and Fig. 3 is taken along the line I-I in Fig. 1. A cross-sectional view of a tube container filled with two types of contents, Figure 4 is a cross-sectional view taken from the line ■-■ in Figure 1.
A sectional view of the butt of the tube container filled with seed contents, Fig. 1
6 and 7 are perspective views showing the second container, FIG. 8 is a diagram showing the sealing process of the second container, and FIG. 9 is a perspective view showing the container.
The figure is a perspective view showing the process of filling the second container with contents. Fig. 10 is a diagram showing the wide part welding process of the second container, Fig. 11 is an enlarged sectional view showing the state in which the second container is assembled to the first container in the process, and Fig. 12 is an amphoteric outlet with a cap. FIG. 13 is a diagram showing the process of filling the first container with contents, FIG. 14 is a diagram showing the wide part welding process of the tube container filled with two types of contents, and FIG. FIG. 2 is a perspective view showing a state in which contents are pushed out in an example container. A...Two types of content filled tube container 1...First container 2...Second container 3...Cap 4...Welded part 5...Virgin seal 11...First head 21...Second head 13...Fitting recess 23...Fitting convex part 14...First spout 24...Second spout 51.52...Butt side opening a ...First content b...Second content

Claims (1)

[Claims] 1) Manufacture of a tube container filled with two types of contents, including a first container and a second container, in which first contents and second contents having different colors, properties, etc. are filled separately. In the method, first, a first container as an outer container with a large internal volume and a second container as an inner container with a small internal volume are manufactured, respectively, and then the spout of the second container is closed with a seal or the like, After filling the second container with the second content from the opening on the bottom side, the bottom of the second container is closed, and then the second container filled with the contents is inserted into the first container and both containers are closed. They fit together at the head, and then the two spouts are closed with a cap, etc., and the first content is filled from the rear opening of the first container into which the second container is inserted, and then the first container is closed. A method for producing a tube container filled with two types of contents, characterized in that the butt part of the container is closed.