JP2003312759A - A plurality of liquid-discharging type aerosol products, and connecting method for a plurality of aerosol containers used for the product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plurality of liquid-discharging type aerosol products of which the manufacturing cost is reduced, and of which the operability is improved, and at the same time, which can prevent a wrong packaging from occurring. <P>SOLUTION: For this plurality of liquid-discharging type aerosol products, the peripheries of the container body parts of at least two aerosol containers being arranged in parallel are packaged with a shrinkable film. In this case, the shrinkable film is shrunk and coated in a recess which is formed on the outer peripheries of the container body parts. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-liquid discharge type aerosol product and a method for connecting a plurality of aerosol containers used for the product. More specifically, for example, a multi-liquid discharge type aerosol product and a plurality of aerosol containers in which different contents such as an oxidative hair dye are filled in different aerosol containers for hair dyeing, and these are connected by a shrink film to perform an injection operation. The present invention relates to a method for connecting a plurality of aerosol containers capable of strongly connecting to each other.

[0002]

2. Description of the Related Art In a conventional multi-liquid discharge type aerosol product, for example, a two-liquid mixing type aerosol product, the entire container body of two aerosol containers is wrapped with a shrink film. An injection member having a passage communicating with the valve stems of the two aerosol containers is attached.

Since such aerosol products have different contents to be filled in the two aerosol containers, the valves are attached and the contents are filled in different filling lines, and then the two containers are joined in the packaging line. The entire body of the aerosol container is covered with a shrink film, and heat-shrinked to wrap the body of the container.

Since the two aerosol containers are wrapped by the shrink film, they are strong against the force from the parallel direction (direction perpendicular to the axial direction of the container) and are not easily displaced.
Since the container body of each aerosol container is circular, if the two container bodies intersect each other due to relative slippage between the body parts during transportation from the packaging work to the fitting operation of the injection member, Since it is difficult for the member to fit onto the stem, it is necessary to prevent the crossing (shift) of the body. A parallel means for this is required, resulting in high cost.

In addition, when the aerosol product (body parallel to each other) is gripped poorly in use, such as when the strength of the thumb is too strong, relative slippage occurs between the body parts and the two container body parts cross each other. The twist load is applied to the two stems connected to one injection member. Therefore, the ejection force may decrease.

[0006] Further, even if one container has a small diameter, it becomes laterally long when connected, and it is difficult for a person with weak power or a person with a small hand to perform a jetting operation, and the container has a flat outer periphery, so that the container easily slips off. There is a problem.

Further, since the size of the aerosol container is the same during the packaging work, it is difficult to distinguish when the aerosol containers are mixed, and there is a possibility that the aerosol containers filled with the same contents are packed together. .
To prevent this erroneous packaging, even if a mark is displayed on the container body of the aerosol container, after the entire body of the container is connected with a shrink film, the mark on the container body becomes invisible and is set correctly. Is difficult to confirm.

In view of the above circumstances, the present invention connects a plurality of liquid discharge type aerosol products and a plurality of aerosol containers capable of reducing production cost and improving operability and preventing erroneous packaging. An object of the present invention is to provide a method for connecting a plurality of aerosol containers which has high strength and can improve productivity and operability.

[0009]

The multiple liquid discharge type aerosol product of the present invention is a multiple liquid discharge type aerosol product in which a container body of at least two aerosol containers arranged in parallel is wrapped with a shrink film. The shrink film is shrink-coated on the recess formed on the outer periphery of the container body.

The method for connecting a plurality of aerosol containers according to the present invention is a method for connecting a plurality of aerosol containers in which the container body of at least two aerosol containers arranged in parallel is connected by a shrink film. An aerosol container having a concave portion formed on the outer circumference of the portion is arranged in parallel, and after covering the shrink film around the container body of the aerosol container arranged in parallel, the shrink film is heated, and the shrink film is placed on the container body. And a concave portion formed on the outer periphery of the container body are shrink-coated with different degrees of shrinkage and connected.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A multi-liquid discharge type aerosol product of the present invention and a method for connecting a plurality of aerosol containers used for the product will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, a multi-liquid discharge type aerosol product according to an embodiment of the present invention is, for example, a two-liquid mixing type aerosol product in which two aerosol products are connected and a jetting operation is performed at the same time. And two juxtaposed
Book aerosol containers 1, 11 and the aerosol container 1,
A shrink film 2 that completely wraps around the container body portions 1a and 11a of 11, an injection member 5 that is fitted to a stem 4 of an aerosol valve 3 attached to each aerosol container 1 and 11, and the aerosol container 1, It is composed of a holding member 6 mounted between 11 and a cap 7 press-fitted onto the holding member 6. The container body 1
Two annular recesses 8 are formed on the outer circumference of each of a and 11a, and the container body portions 1a and 11 including the annular recess 8 are formed.
The shrink film 2 is shrink-coated on the whole a. Note that the thickness of the shrink film 2 is exaggerated in the drawing for clarity.

As the aerosol containers 1 and 11, a single-layer structure aerosol container in which a stock solution and a propellant are filled together in a container body is used. However, the present invention is not limited to this, It can be selected as appropriate depending on the type of product. For example, it is possible to use a double structure aerosol container in which the stock solution and the propellant are separated by a partition wall such as a piston or an inner bag to fill the inside of the container body, and the stock solution is pushed out through the partition wall by the pressure of the propellant. The container body 1a, 11a may be a metal container such as an aluminum container or a steel container, a resin container such as polyethylene terephthalate (PET) or polybutylene terephthalate (PBT), or a pressure resistant container such as a glass container. Can be used. The aerosol valve 3 is composed of a mounting cup 10 attached to the upper end opening of the valve mounting portion 9 of the container body 1a, 11a and an injection valve 12 supported inside the center of the mounting cup 10. Can be used. The injection valve 12 includes a housing 13 and the housing 13
A stem 4 which is disposed inside and in which a communication hole is formed; a spring 14 which biases the stem 4 outward;
And a stem rubber 15 fitted around the outer periphery of
A stem rubber 15 is pressed against the mounting cup 10 by a spring 14 provided below the stem 4, so that the container body portions 1a and 11a are mounted on the mounting cup 10.
And the stem rubber 15 are sealed and fixed. Reference numeral 16 is a dip tube fitted in the lower portion of the housing 13. In addition, as the injection member 5, a communication hole 17 that is fitted into the two stems 4 and an injection passage 18 that communicates with the communication hole 17 are formed inside, and injection is performed at the outlet of the injection passage 18. Nozzle 19
The one that is fitted is used.

The shrink film 2 is not particularly limited as long as it is a heat-shrinkable plastic film, and for example, polyolefin such as polypropylene, polyethylene and copolymers thereof, or polyvinyl chloride can be used. Further, the shrink film 2 may be a transparent or opaque film, or may be printed.

This shrink film 2 is first applied to an aerosol container having a concave portion formed on the body of the container at a filling line.
After filling different contents, and then installing the aerosol valve to each of the filled aerosol containers, a predetermined number of aerosol containers are joined together in a packaging line to be in a side-by-side (parallel) state. The container body is mounted so as to cover the recess formed in the container body, and then the entire body of the container or only the peripheral portion of the recess is heated to shrink the container body. At this time, in the shrink film D, the outer diameter of the container body is different from that of the recess, so that the shrinkage is different between the two and the connection strength is increased. Also, shrink film D shrinks and shrinks by using a different material at the position covering the recess, changing the thickness and outer diameter of the shrink film, or changing the heating conditions between the recess and the container body. The degree may be changed further. In the conventional connection method, since the shrink film is heat-shrinked on the outer circumferences of the two cylindrical container bodies of the aerosol containers arranged side by side, the degree of shrinkage around the container body is uniform, and the axial direction of the container is reduced. On the other hand, it is strong against the force from the vertical direction and is not easily displaced, but it is weak against the force from other directions such as relative twisting of the container, and particularly weak against the axial force. It shifts in the direction. On the other hand, in the present invention, as shown in FIGS. 5 to 6, when the shrink film 2 is thermally shrunk around the container body 1a and the recess 8 of the aerosol container 1, the shrink film 2 is Since the heat is shrunk so as to form two outer peripheral portions, that is, the first outer peripheral portion 2a with respect to the portion 1a and the second outer peripheral portion 2b with respect to the recessed portion 8, the degree of contraction between them is different, and the container 1 , 11 is stronger against the force from the direction perpendicular to the axial direction, and the shrink film 2 covering the inclined portion 2c between the two outer peripheral portions 2a and 2b prevents the force from the axial direction or the oblique direction. The connection strength is also strong against the force, and it is difficult to shift. The ratio of the outer diameter of the concave portion 8 to the outer diameter of the container body 1a is 0.8 to 0.98, and further 0 in terms of the shrinkage degree of the shrink film 2, the connection strength, and the pressure resistance of the container. .85-
It is preferably 0.95. The width of the recess 8 is also 1 to 10% with respect to the total length of the container (from the bottom to the mouth) from the viewpoints of connection strength, easy gripping, and easy confirmation of the recess 8 after shrink wrapping. , And even 1.5-8
% Is preferable. The cross-sectional shape of the recess 8 is not particularly limited, but may be U-shaped or V-shaped formed of one recess, or may be W-shaped by providing the recesses close to each other. There are two types, one having a concave portion formed in two steps in one portion, and the like.

In this embodiment, the annular recess 8 is
Are formed at two locations on the container body 1a, 11a, but the present invention is not limited to this, and may be formed at one location or at three or more locations, for example, over the entire length of the container body. it can. The recess 8 is formed in an annular shape, but the shrink film 2 is formed by the container body portions 1a and 11a.
If the annular recess 8 is covered by shrinkage, the connection strength when connecting the two aerosol containers 1 and 11 becomes strong, and the containers 1 and 11 do not shift from each other.
It is also possible to use a semicircular recess formed on the outer periphery of a, 11a. However, in this case, it is necessary to position the semicircular recesses formed in the container body of the aerosol container, which are juxtaposed such that the recesses are caught by the fingers, in opposite directions. Also, the number of annular recesses can be changed for each aerosol container. Accordingly, by changing the number of the concave portions, it is possible to determine which aerosol container is the external appearance by wrapping the entire container body with the shrink film.

Further, in the above-mentioned embodiment, the entire container body is wrapped with the shrink film, but the present invention is not limited to this, and the shrink film is provided around the recess for cost reduction. Can be packaged in parts only. For example, as shown in FIG. 7, only the peripheral portion of the annular concave portion 8 formed in the container body portions 1a, 11a of the aerosol containers 1, 11 can be wrapped with the shrink film 31. Also in this case, as in the case of the above-described embodiment, the connection strength when connecting the two aerosol containers 1 and 11 becomes strong, and the containers 1 and 11 do not shift from each other. The holding member 6 can be omitted. In this case, the cap can be directly engaged and fixed in the crimp position of the valve. Further, since the shrink film does not cover the bottom of the container, the bottom is uniform, and it is difficult for the container to fall down even when the product is stood on the manufacturing line or when the product is packed or displayed.

The two-liquid mixed type aerosol product shown in FIGS. 8 to 9 is composed of two aerosol containers 1 and 2 arranged in parallel.
1 and the body parts 1a, 21 of the aerosol containers 1, 21
A shrink film 31 for partially wrapping around a, an injection member 41 fitted to a stem (not shown) of an aerosol valve (not shown) attached to each aerosol container 1 and 21, and the aerosol container A holding member (not shown) mounted between Nos. 1 and 21, a cap 42 press-fitted onto the holding member, and each aerosol container 1, 21
And a bottom cap 43 fitted to the bottom of the. The bottom cap 43 has a rust prevention function and an auxiliary function for connecting the aerosol containers 1 and 21, but the cap 43 can be omitted in the present invention.

In the container body 1a of the aerosol container 1 according to this embodiment, an annular recess 8 is formed as in the above-described embodiment.
Is formed in two places, the annular body 8 is formed in one place in the container body portion 21a of the aerosol container 21.
As described above, in the present embodiment, the number of annular concave portions 8 is different between the aerosol container 1 and the aerosol container 21,
Even if it is wrapped with the shrink film 41, it is possible to easily and surely determine which aerosol container is the external appearance.

[0020]

As described above, according to the present invention,
Since the recess is formed in the container body of a plurality of aerosol containers, the connection strength when connecting the aerosol containers by the shrink film becomes strong and the containers do not shift from each other. It is possible to save the production cost.

Further, when the container body is gripped, the container is less likely to slip off the shrink film, and the containers do not shift from each other, so that the container can be reliably ejected.

By changing the number of recesses formed in the container body of the aerosol containers juxtaposed, it is possible to determine which aerosol container is the appearance even if the entire container body is wrapped with a shrink film. can do.

[Brief description of drawings]

FIG. 1 is a front view showing a two-liquid mixing type aerosol product according to an embodiment of the present invention.

FIG. 2 is a rear view of the two-liquid mixing type aerosol product of FIG.

3 is a vertical cross-sectional view parallel to the paper surface of the two-liquid mixing type aerosol product of FIG.

FIG. 4 is a vertical cross-sectional view perpendicular to the paper surface of the two-liquid mixing type aerosol product of FIG.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is an enlarged cross-sectional view of a recess.

FIG. 7 is a front view showing a two-liquid mixing type aerosol product according to another embodiment of the present invention.

FIG. 8 is a front view showing a two-liquid mixing type aerosol product according to still another embodiment of the present invention.

9 is a rear view of the two-liquid mixing type aerosol product of FIG.

[Explanation of symbols]

1,11 Aerosol container 1a, 11a container body 2 shrink film 2a First outer peripheral portion 2b Second outer peripheral portion 2c inclined part 4 stems 5 injection member 6 holding member 7 cap 8 annular recess 8 Valve mounting part 10 mounting cups 12 injection valves 13 housing 14 spring 15 stem rubber 16 dip tube 17 communication holes 18 Injection passage 19 injection nozzles

Continued front page    F term (reference) 3E014 PA01 PC02 PC03 PD01 PE15                       PE17 PE23 PF10                 3E067 AB81 AB96 AC03 AC06 BA02B                       BA18C BB08B BB11B BB14B                       BB14C BB15C BB16C BC03B                       BC03C CA01 EC28 FB01                       GD10

Claims (8)

[Claims] 1. A multi-liquid discharge type aerosol product in which a container body of at least two aerosol containers arranged side by side is wrapped with a shrink film, wherein the shrink film is provided on the outer periphery of the container body. A multi-liquid discharge type aerosol product in which the formed recesses are shrink-coated. 2. The multiple liquid discharge type aerosol product according to claim 1, wherein the recess formed in the container body is an annular recess. 3. The multiple liquid discharge type aerosol product according to claim 1, wherein the shrink film is packaged only around the peripheral portion of the recess. 4. The multi-liquid discharge type aerosol product according to claim 1, 2 or 3, wherein the recess is formed at least at one location on the body of each aerosol container. 5. A method for connecting a plurality of aerosol containers in which container bodies of at least two aerosol containers arranged in parallel are connected by a shrink film, wherein the aerosol containers in which a recess is formed on the outer periphery of the container body are arranged in parallel. Installed, after covering the shrink film around the container body of the aerosol container juxtaposed, heating the shrink film,
A method for connecting a plurality of aerosol containers, wherein the shrink film is shrink-coated with a container body and a concave portion formed on the outer periphery of the container body at different shrinkages for connection. 6. The method for connecting a plurality of aerosol containers according to claim 5, wherein the recess formed in the container body is an annular recess. 7. The method for connecting a plurality of aerosol containers according to claim 5, wherein the shrink film covers only the peripheral portion of the recess by shrinking. 8. The method for connecting a plurality of aerosol containers according to claim 5, 6 or 7, wherein the recess is formed at least at one location on the body of each aerosol container.