JP3273251B2 - Aerosol paint manufacturing method and aerosol paint manufacturing apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an aerosol paint,
That is, the present invention relates to a method and an apparatus for producing paint sprayed from a nozzle of a spray container (such as an aerosol can), and more particularly to a method and apparatus suitable for producing a small amount of toned paint.

[0002]

2. Description of the Related Art In recent years, the body colors of automobiles are diverse,
In addition, even if the colors are of the same system, the color tone and the like are slightly different for each vehicle. Under such circumstances, paints in containers of a great variety of colors are commercially available as automotive paints, and paints in spray containers are commercially available as paints that can be easily applied. ,
These paints on the market are not toned according to the body color of each automobile, but are merely toned to a representative color according to the type of automobile.
Therefore, if you purchase a commercial product and use it as it is in your own car, the body color of the car and the color of the purchased paint will not match, and for example, when repairing the paint film, delicate color unevenness may occur. Sometimes. Although the types of colors of commercially available paints in containers may be increased, it is impossible to prepare paints of the same color in advance for all individual automobiles.

[0003] In view of this, it has been conceived that tones can be prepared at a store by mixing paints of a plurality of colors in accordance with customer requirements. However, when a paint having a color according to a customer's request is toned at a store, a problem occurs when the paint container is a spray container. In other words, when a toned paint is put into a spray container and sold to a customer, the spray container must be filled with a high-pressure gas for spraying the paint. Can be dangerous and may require qualified personnel for high pressure gas.

Under such circumstances, Japanese Patent Publication No. 49-40 / 1976
No. 676 and No. 3041821, a spray container pre-filled with a high-pressure gas is carried into a store, and a small amount of paint toned according to a customer's request is stored in the spray container at the store. There is a description of filling and a device for filling a small amount of toned paint into a spray container pre-filled with high pressure gas.

The paints handled by the filling apparatus described in these publications are toned paints, and such toned paints include a plurality of paints having different colors each in a required amount such as a paper cup. It must be obtained by putting in a disposable simple container and mixing in the simple container.

[0006]

However, the toned paint obtained by mixing a plurality of kinds of paints in a simple container is transferred to a hopper provided in the filling device and filled in a spray container. If the procedure is taken, the entire amount of all kinds of paints put in the simple container is transferred to the hopper of the above-mentioned filling device without being left, but there is no problem if it is filled completely in the spray container from the hopper, In ordinary shop operations, when the toned paint is transferred from the simple container to the hopper, the paint may adhere to the simple container and remain. In this case, if the total amount of all the paints is uniformly mixed in advance in the simple container, the color of the paint transferred to the hopper or the paint filled in the spray container from the hopper becomes the initially desired color. There is no problem. However, when the total amount of all the paints is not uniformly mixed in the simple container, for example, when unmixed paint remains attached to the simple container,
Since the mixing ratio for each of the different color paints is different from the expected ratio, the paint transferred to the hopper does not have the initially desired color, and the paint filled from the hopper into the spray container. Cannot be the color originally desired. As a result, the desired color tone obtained by uniformly mixing all of the paints is not exhibited by the paint filled in the spray container, and the desired color tone of the paint and the actual color of the paint filled in the spray container are not obtained. The color tone of the image becomes different.

[0007] Further, there is a danger that the vapor of the solvent contained in the paint will diffuse into the air during the operation of mixing a plurality of kinds of paints in a simple container.

Further, the above-mentioned hopper and other parts of the filling device must be completely washed and removed with a volatile solvent such as thinner after use to remove residual paint adhered to the hopper, so that it is troublesome to prepare for the next use. Not only
There is a risk of adversely affecting the health of workers and danger such as ignition.

The present invention has been made in view of the above problems and circumstances, and a desired color tone is reliably obtained by mixing a plurality of types of pigments of different colors as paint components in a spray container. The purpose is to:

Further, the present invention can omit the cleaning work after the use of the member used for the production of the toned paint, thereby reducing the risk of adverse effects on workers' health and the risk of ignition. The purpose is to eliminate.

[0011]

The method for producing an aerosol paint according to the present invention is a method for producing an aerosol paint in which a plurality of types of liquid dispersion pigments having different colors are mixed and toned. The nozzle opening of the nozzle of the injection means which is a medical or industrial disposable syringe having a function of pushing out the liquid dispersed pigment collected by a syringe with a piston, and a normally closed content ejection path opened by an opening operation. The spray path of the stem of the spray container, which is pre-filled with a solvent, a binder component, and a high-pressure gas for injection, having a stem having, and passing a fluid from the nozzle toward the stem, The total amount of the required amount of the liquid dispersion pigment collected by the injection means in a state where the fluid is connected by a connector having a check valve function for preventing passage of the fluid toward the nozzle. Through a single pushing operation of the injecting means into the spray container, a plurality of types of liquid dispersion pigments are filled into the spray container without being subjected to toning by mixing. The filled liquid dispersion pigments are mixed inside the spray container.

According to the production method of the present invention, since a plurality of types of liquid dispersion pigments having different colors are mixed in the spray container after being filled in the spray container, the liquid dispersed pigments are mixed before being filled in the spray container. This eliminates the need to put a plurality of types of liquid dispersion pigments in a simple container such as a paper cup and mix them uniformly. In addition, since the required amount of each of the plurality of types of liquid dispersion pigments having different colors is filled in the spray container, a situation in which the desired color tone and the color tone of the paint filled in the spray container are slightly different is less likely to occur. The spray container filled with the liquid dispersion pigment is pre-filled with a solvent, a binder component, and a high-pressure gas for jetting, and has a normally closed content ejection path that is opened by the opening operation of the spray container. Since a stem is provided, if a plurality of types of liquid dispersion pigments filled together with a solvent and a binder component are mixed with a method such as shaking the spray container after filling, a nozzle is attached to the stem and used immediately. Becomes possible. In addition,
In the present invention, the liquid dispersion pigment before being filled in the spray container contains various additives (such as an anti-settling agent, a dispersant, a surfactant, and a resin) required to suppress the sedimentation and aggregation of the pigment (specified). Is not limited). Also, the stem provided in the spray container,
What is necessary is just to have the normally closed contents ejection path opened by opening operation. Such a stem has a valve member for opening and closing the content ejection path of the stem (even if it is arranged in the content ejection path, it is arranged outside the start or end of the content ejection path. The valve member may be opened by pushing down the stem itself, or a valve member for opening / closing a content ejection path provided in the stem (content ejection). May be arranged in the channel or outside the beginning or end of the content ejection channel.) And the valve member pushes the pin-shaped member inserted into the stem. Various structures such as those opened by operation are included.

In the present invention, the number of injecting means used for filling may be one, or may be the same as the number of kinds of liquid dispersion pigment used for mixing. When one injection means is used, all of the liquid dispersion pigments used for mixing are measured and collected in a syringe of one injection means, and a plurality of liquid dispersion pigments thus collected are sprayed using the injection means. Fill. When using the same number of injection means as the number of types of liquid dispersion pigment used for mixing,
The separate liquid dispersion pigments are weighed and collected in the syringes of the respective injection means, and the liquid dispersion pigments thus collected are individually filled into spray containers using the respective injection means.

It is desirable that the above-mentioned injection means be discarded after each use. As the injection means used in these methods, a so-called disposable medical or industrial disposable syringe which is discarded after each use can be suitably used. This eliminates the trouble of cleaning the injection means after use and preparing for the next use. When the above-mentioned syringe is used as an injection means, the filling amount of the liquid dispersion pigment in the spray container can be accurately determined, which is useful for obtaining a desired color tone.
In addition, the measurement of the liquid dispersion pigment collected in the syringe of the injection means may be performed based on the volume or the weight.

An apparatus for producing an aerosol paint according to the present invention is an apparatus for producing an aerosol paint directly used for performing the method for producing an aerosol paint according to claim 1, wherein the syringe is provided with a nozzle and the syringe is sampled. It has a liquid dispersing pigment injection means having a piston for extruding the required amount of the liquid dispersing pigment from the nozzle without performing color mixing by mixing, and a normally closed content ejection path which is opened by an opening operation. A connection tool that has a stem and communicates the ejection path of the stem of the spray container and the nozzle port of the nozzle with a solvent, a binder component, and a high-pressure gas for injection that are pre-filled, wherein the connection tool is provided. A check valve function that allows fluid to pass from the nozzle toward the stem and prevents passage of fluid from the stem toward the nozzle. And, said injection means is a medical or industrial disposable syringes for, is that.

In this manufacturing apparatus, the number of the injection means is one.
In some cases, the number may be sufficient, and in some cases, a number corresponding to the number of a plurality of types of liquid dispersion pigments may be required. Those using one injection means are suitable for the above-described production method using one injection means, and those using a number of injection means according to the number of types of liquid dispersion pigments are applicable to a plurality of types of liquid dispersion pigments. To use different injection means.

In this manufacturing apparatus, since the connecting member has a check valve function for passing the fluid from the nozzle toward the stem and preventing the passage of the fluid from the stem toward the nozzle, the injection tool is provided. When the nozzle of the means is attached to and detached from the stem of the spray container via the connecting tool, and when filling the spray container with the liquid dispersed pigment by its injection means,
The high-pressure gas pre-filled in the spray container does not blow out from the spray path of the stem, so that the filling operation of the liquid dispersed pigment can be easily performed.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view schematically showing a method for producing an aerosol paint according to the present invention. This production method is basically a method of producing a small amount of paint toned by mixing a plurality of types of liquid dispersion pigments having different colors.

In this production method, a plurality of types of liquid dispersion pigments are mixed in a spray container. As shown in FIG. 1, the spray container 1 includes a stem 2. The stem 2 is provided with a normally closed content ejection path (not shown) that is opened by an opening operation.

FIG. 1 shows an example in which three kinds of liquid dispersing pigments X, Y, and Z exhibiting different colors are mixed in necessary amounts to produce a paint having a desired color tone. Here, the liquid dispersion pigment refers to a dispersion of the pigment in a solvent, and such a liquid dispersion pigment includes various additives such as an anti-settling agent, a dispersant, a surfactant, and a resin. May be included. The upper part of the figure illustrates a state in which three kinds of liquid dispersing pigments exhibiting different colors are weighed and collected in required amounts a, b, and c by one injecting means A, and the lower part of the figure shows the state. FIG. 3 illustrates the state in which the three types of liquid dispersion pigments X, Y, and Z thus measured and collected are filled in the spray container 1.

As the injection means A, a medical or industrial disposable syringe (described later) can be suitably used. This means that, for a medical or industrial syringe, three types of liquid dispersion pigments X, Y, and Z are sequentially collected based on the weight, or the scale is used if the syringe has a scale. And three kinds of liquid dispersion pigments X, Y, Z
Can be accurately measured and collected in a required amount, and all three types of collected liquid dispersion pigments X, Y, and Z can be extruded.

As can be seen in FIG. 1, the liquid dispersion pigment, which is collected in a required amount in one injection means A, is filled into the spray container 1 from the injection means A. The operation of filling the liquid dispersion pigment in the spray container 1 is performed by filling the total amount of the three types of liquid dispersion pigments X, Y, and Z measured by the injection means A with the injection means A.
From the spray container 1 through a single pushing operation. The filling at this time is performed in a state where the contents ejection path is opened by opening the stem 2. When the liquid dispersing pigment is pushed into the spray container 1 from the injection means A and filled, the injection means A
The nozzle port of the nozzle N is connected to the ejection path of the stem 2 of the spray container 1 by using the connecting tool C. The connecting device C shown in FIG. 1 has a check valve C1 and has a function of passing the fluid from the nozzle N to the stem 2 but preventing the fluid from the stem 2 to the nozzle N. .
Therefore, after filling the spray container 1 with the three types of liquid dispersion pigments X, Y, and Z, when removing the connecting tool C from the stem 2 or removing the nozzle N of the injection means A from the connecting tool C, A situation in which the high-pressure gas pre-filled in the spray container 1 is ejected from the stem hardly occurs. In performing this method, the used injecting means A and the connecting tool C are discarded after each use. By doing so, it is not necessary to clean the injection means A and the connecting tool C and prepare for the next use. You are free from dangers.

The three types of liquid dispersion pigments X, Y, and Z filled in the spray container 1 are mixed inside the spray container 1 by shaking the spray container 1. Therefore, if a steel ball or the like is put in the spray container 1 in advance, the steel ball helps to promote the mixing when shaken.

The color tone of the aerosol paint produced as described above is highly consistent with the initially desired desired color tone.

In carrying out this method, the types and amounts of the liquid dispersion pigments X, Y and Z from which the required amount is collected in the injection means A can be easily determined as follows. That is, a color sample (colored paper piece or colored plastic piece) having a required color is prepared in advance. In the color sample, a plurality of types of liquid dispersion pigments necessary for producing the same color tone as the color sample and specific matters concerning the mixing amount thereof are displayed. Then, after selecting a desired color sample from among such many color samples, the specific type of liquid dispersion pigment and the amount thereof which are displayed on the color sample are measured and collected by the injection means A. .

FIG. 2 shows an apparatus for producing an aerosol paint. By using this apparatus, the above-described toning method can be performed easily and reliably.

This manufacturing apparatus is provided with one injection means A and one connection tool C for communicating the above-mentioned ejection path of the stem 2 of the spray container 1 with the nozzle port of the nozzle N of the injection means A. .

The injection means A has a syringe S having a nozzle N at one end, and a piston P for pushing out the liquid dispersion pigment measured and collected in the syringe S from the nozzle N. As the syringe S of the injection means A, a syringe of a medical or industrial disposable syringe can be used as it is. The stem 2 of the spray container 1 has a normally-closed content ejection path that is opened by an opening operation, and the spray container 1 is pre-filled with a solvent, a binder component, and a high-pressure gas for injection. . Further, the connecting tool C allows the fluid to pass from the nozzle N toward the stem 2, and
Has a check valve function of preventing passage of fluid from the nozzle to the nozzle N. These points are as described above.

The apparatus shown in FIG. 2 pushes the mounting table 91 for the spray container 1, the mounting table 93 for mounting the cylindrical holder H for supporting the injection means A, and the piston P of the injection means A. Push rod L for the purpose. The pushing rod L is used in place of a piston rod for pushing a disposable syringe, and the piston P is provided at the tip thereof, and the piston P has a rubber ring that slides tightly on the inner peripheral surface of the syringe S. R (see FIG. 4) is attached. A gear box 94 is provided on the upper part of the device. As shown in FIG. 3, the gear box 94 has a handle 9 which can swing up and down within the angle range θ shown in FIG.
6 is provided with a sector gear 97 to which the support shaft 95 is fixed, and a movable shaft portion 98 extending from the pushing rod L.
Is provided, and a rack 99 provided on the movable shaft portion 98 meshes with the fan gear 97.

In this apparatus, a procedure for filling the liquid dispersion pigment collected in the injection means A into the spray container 1 will be described. First, the movable shaft 98 is raised by raising the handle 96. In this state, the syringe S of the injecting means A in which the liquid dispersion pigment is measured is inserted into the holder H removed from the mounting table 93 and held, and then the holder H is set on the mounting table 93. Further, the nozzle 2 of the injection means A and the stem 2 of the spray container 1 placed on the placing table 91
Are connected by the connecting tool C. Thereafter, the stem 2 is opened to open its contents ejection path, and in this state, the handle 96 is depressed so that the sector gear 97
, The movable shaft 98 is lowered together with the pushing rod L by one stroke for the entire stroke, and the liquid dispersing pigment is pushed out by the piston P by one operation to fill the spray container 1.

As shown in FIG. 4, the connecting member C has a cylindrical shape, and is provided with a male screw 12 at the upper part on the outer periphery thereof. The male screw 12 is formed on the inner periphery of the nozzle N of the syringe S. It is connected to the nozzle N by screwing into the female screw 13. Also, a fitting hole 1 formed in the lower part of the connecting tool C
4 is connected to the stem 2 by inserting it into the stem 2 of the spray container 1. And the rubber check valve 15
Is provided in the internal passage of the connecting tool C. The check valve 15 shown in FIG. 4 is entirely made of rubber having a constricted shape, and has a cut end 15b formed at the lower end of a passage 15a leading to the nozzle N. According to the check valve 15, when the liquid dispersed pigment is pushed in from the nozzle N side, the cutout 15b is opened by the pushing pressure, and the liquid dispersed pigment is pushed out to the fitting hole 14 side. However, when pressure is applied to the outer peripheral surface of the check valve 15 from the stem 2 side of the spray container 1 (not shown), the cut 15b is closed by the pressure, and the backflow of the high-pressure gas in the spray container 1 is prevented. You.

FIG. 5 shows a modification of the check valve 15. The check valve 15 has a connection port 15c fitted at one end to the nozzle N, and a fitting portion 15d fitted externally to the stem 2 at the other end. Cut 1
It has a valve part 15f provided with 5e. In this check valve 15, the nozzle N is fitted to the connection port 15c as shown in the drawing, and the tip of the nozzle N is brought into contact with the valve portion 15f, and the fitting portion 15d is attached to the stem 2. If an interval is provided between the stem 2 and the valve portion 15f, the nozzle N
When the liquid dispersed pigment is pushed in from the side, the cutout 15e of the valve portion 15f is opened by the pushing pressure, and the liquid dispersed pigment is pushed out to the stem 2. But stem 2
When pressure is applied to the valve portion 15f from the side, the cut portion 1 is formed because the valve portion 15f contacts the tip of the nozzle N.
5e does not open. Therefore, backflow of the high-pressure gas in the spray container 1 is prevented.

FIG. 6 is an explanatory view schematically showing another method for producing the aerosol paint according to the present invention. FIG. 1 shows an example in which three kinds of liquid dispersion pigments of different colors are mixed by a required amount, and a paint having a desired color tone is toned. In the upper part of the figure, three kinds of liquid dispersing pigments exhibiting different colors by three different injecting means 3, 4, 5 are provided in required amounts a, b,
The state in which the three types of liquid dispersion pigments thus collected are filled in the spray container 1 is illustratively shown in the lower part of FIG. The point that a medical or industrial disposable syringe (described later) can be suitably used for the injection means 3, 4, 5 is the same as that described with reference to FIG. 33, 4 in the figure
Reference numerals 3 and 53 denote pistons of injection means 3, 4 and 5, and 3
1, 41 and 51 indicate syringes of the injection means 3, 4, and 5, respectively. And in the figure, 61, 71, 81 are injection means 3, 4,
5 shows a check valve No. 5;

As can be seen from FIG. 6, the three types of liquid dispersion pigments are supplied in required amounts a, b, c by separate injection means 3, 4, 5.
Is weighed and collected, and the liquid dispersion pigment thus collected is filled into the spray container 1 through each of the injection means 3, 4, and 5 through a separate filling step. Spray container 1
After filling the entire amount of the liquid dispersed pigment collected in one injecting means 3 into the spray container 1 from the injecting means 3 and filling the liquid dispersed pigment in the other injecting means 4, Spray container 1
And the remaining amount of the liquid dispersion pigment collected in the injecting means 5 may be pushed into the spray container 1 for filling. Alternatively, in the first stage, the three injecting means 3, The liquid dispersing pigments are sequentially collected in steps 4 and 5, and in the next stage, the three injection means 3, 4,
From step 5, the liquid dispersion pigment may be sequentially pushed into the spray container 1 and filled. Injection means 3, 4,
5 when the liquid dispersion pigment is pushed into the spray container 1 by filling, the nozzles 32, 4 of the injection means 3, 4, 5 are used.
The nozzles 2 and 52 are communicated with the ejection path of the stem 2 of the spray container 1 by using the connecting tools 6, 7, and 8. The same connection members 6, 7, 8 as those described in FIG. 1 can be used. In performing this method, the used injection means 3, 4, 5 and the connecting tools 6, 7, 8 are discarded after each use. By doing so, there is no need to clean the injection means 3, 4, 5 and the couplings 6, 7, 8 to prepare for the next use, so that the operator can reduce the trouble of cleaning and diffusion of the solvent. You will be free from the adverse health effects and danger of ignition.

The three kinds of liquid dispersion pigments filled in the spray container 1 are mixed inside the spray container 1 by shaking the spray container 1.

The color tone of the aerosol paint manufactured as described above is highly consistent with the initially desired desired color tone.

In carrying out this method, the same method as that described with reference to FIG. 1 can be used for determining the type and amount of the liquid dispersion pigment measured by the three injection means. Further, the filling can be performed using the apparatus described with reference to FIG.

In the manufacturing apparatus according to the present invention, as the apparatus for filling the liquid dispersion pigment collected in the injection means into the spray container, for example, those utilizing the principle of leverage, other than those shown in FIG. It is possible to appropriately select and use a screw type, a type using an air cylinder or a hydraulic cylinder, or the like.

In the case described above, the spray container 1 has a structure in which the content ejection passage formed by the stem 2 is opened by performing an opening operation of pushing the stem 2 itself from the initial position. . In the spray container 1 having this structure, a valve member (not shown: for example, a notch formed in a rubber material) for opening and closing the contents ejection path of the stem 2 is provided with the contents in the contents ejection path. The stem 2 is arranged at a predetermined position such as the beginning of the ejection path or the outside of the end of the content ejection path, and when the stem 2 is pushed down, the cut of the valve member is pushed open by the stem itself or a member linked to the stem. Such a structure.

Another type of spray container is shown in FIGS. When the opening operation of pushing the stem 400 from the initial position against the force of the spring 410 that constantly urges the stem 400 toward the initial position side is performed, the stem 400 used in this spray container becomes as shown in FIG. Thus, when the passage 420 provided in the stem 400 is separated from the packing 430 to open the content ejection passage 440 and the stem 400 is returned to the initial position by the force of the spring 410, as shown in FIG. , Passage 420 is packing 4
30 and the content ejection path 440 is closed. In such a spray container 1, a nozzle (not shown) is generally mounted on the stem 400 for use.

FIGS. 9 to 13 show examples of still another type of spray container. FIG. 9 is a sectional view showing a main part of the spray container. As shown in the figure, a stem 200 used in this spray container is attached to a top plate 300 of the spray container, and has a stepped shape at an intermediate portion of a content ejection passage 201 formed by an internal passage thereof. A valve member 2 having a valve seat portion 202 and being constantly elastically urged by a spring body 203 in a direction of elastically contacting the valve seat portion 202 and closing the content ejection path 201.
05. In a spray container having such a stem 200, for example, as shown in the drawing, the stem 200
When an opening operation is performed by pushing the operating portion 212 of the cap 210 with a finger of the hand, the operating pin 211 previously inserted into the stem 200 is pushed into the valve, and the operation pin 211 is provided on the valve. Member 205
Is pushed in against the bias of the spring body 203, whereby the valve member 205 separates from the valve seat 202 and the content ejection path 2
01 is released.

FIG. 10 shows the cap 210 and the operating pin 21.
10 is an explanatory view schematically showing a case where the method for producing an aerosol paint according to the present invention is performed using the aerosol container of FIG. This manufacturing method is basically based on FIG.
Corresponds to the spray container 1 shown in FIG. That is, a spray container pre-filled with a required amount of a solvent, a binder, and a high-pressure gas for injection is filled with the liquid dispersion pigment from the injection means A through the content ejection path 201 formed by the stem 200. . Further, in this method, as in the case described with reference to FIG. 1, the nozzle port of the nozzle N of the injection means A and the ejection path of the stem 200 of the spray container have the check valve 15 having the check valve 15 described in FIG. It is communicated using C.

In this method, when the piston of the injection means A is pushed in as shown in FIG. 11, the liquid dispersed pigment pushed out of the syringe pushes the check valve 15 of the connecting tool C to spread out.
In addition, the valve member 205 is depressed to release the contents ejection path 201.
Is opened, the liquid dispersion pigment is filled in the spray container 1. The filled liquid dispersion pigment is mixed inside the spray container by shaking the spray container. In the case of this method, the content ejection path 201 is opened by the liquid dispersion pigment extruded from the injection means A, so that the opening operation for opening the normally closed content ejection path 201 requires the liquid dispersion pigment from the injection means A. The operation of extruding the pigment is equivalent.

Other items are the same as those described in FIG. 1, and the point that the manufacturing apparatus described in FIG. 2 and the like can be used is also the same as that described in FIG. Further, the method described with reference to FIG. 6 can be performed.

In the method described with reference to FIGS. 10 and 11, the connector C having the check valve 15 is used, but the connector C can be omitted. Since the valve member 205 described in FIG. 9 is constantly urged by the spring body 203 in the direction to close the content ejection path 201, the valve member 205 and the spring body 203 and the like exhibit a check valve function. is there.

FIGS. 12 and 13 show an example in which the connecting member C described with reference to FIGS. 10 and 11 is omitted, and the nozzle port of the nozzle N of the injection means A is directly connected to the ejection path of the stem 200. I have. By performing the method of the present invention in this way,
In the first stage where the liquid dispersion pigment is not extruded from the syringe of the injection means A, as shown in FIG.
Resiliently contacts the valve seat 202 to close the content ejection path 201. In this state, when the piston of the injection means A is pushed in as shown in FIG. 13, the liquid dispersed pigment pushed out of the syringe pushes down the valve member 205 to open the content ejection path 201. Is filled. The filled liquid dispersion pigment is mixed inside the spray container by shaking the spray container. In the case of this method, the content ejection path 201 is opened by the liquid dispersion pigment extruded from the injection means A, so that the opening operation for opening the normally closed content ejection path 201 requires the liquid dispersion pigment from the injection means A. The operation of extruding the pigment is equivalent. After the liquid dispersion pigment has been filled, the above-mentioned check valve function operates to close the content ejection path 201.

Other items are the same as those described in FIG. 1, and the point that the manufacturing apparatus described in FIG. 2 and the like can be used is also the same as that described in FIG. Further, the method described with reference to FIG. 6 can be performed using the spray container described with reference to FIG.

[0048]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment using the method described with reference to FIG. 1 will be described. In a commercially available spray container 1 having a content of 350 ml, 30
% Methyl methacrylate in 120 ml toluene solution,
160m dimethyl ether gas as high pressure gas for injection
l was pre-filled. As the syringe S of the injection means A, a plastic medical disposable syringe having an inner diameter of 20 mm, a total length of 120 mm, and a capacity of 30 ml was used. The connector C having the check valve 15 described with reference to FIG. 4 was used.

In a syringe S of the injection means A, 5 ml of a 50% carbon black-dispersed pigment dispersed in xylene,
15 ml of 0% titanium white was weighed and collected. The entire amount of the carbon black-dispersed pigment and the titanium white collected in the syringe S was filled in the spray container 1 using the apparatus shown in FIG. Thereafter, the spray container 1 was shaken to mix the carbon black-dispersed pigment and the titanium white in the spray container 1.

In order to spray the aerosol paint thus obtained, a nozzle was attached to the stem 2 of the spray container 1, and the nozzle was pushed to spray the paint as a content. A gray coating was obtained. In addition, the syringe S used for the filling operation,
The connection tool C, the rubber ring R, etc. were replaced with new ones each time filling was performed, and the used syringe S, the connection tool C, the rubber ring R, etc. were discarded without washing.

The syringe S of the injection means A contains 1 to 300
ml, preferably 5-100 ml, or 2-50 ml, and even 5 ml
Those having a capacity of ３０30 ml can be suitably used. In the operation of filling the liquid dispersion pigment from the syringe S into the spray container 1, it is desirable to move the handle 96 of the apparatus shown in FIG.

[0052]

According to the method and apparatus for producing an aerosol paint according to the present invention, a plurality of pigments of different colors are mixed in a spray container, so that the paint can be uniformly mixed before filling. As compared with the case where the paint is filled in a spray container, not only can a desired color tone be surely obtained, but also favorable results can be obtained in terms of health of workers and disaster prevention such as prevention of ignition. Such an effect is more remarkably exhibited because the cleaning operation after use of the member used for the toning operation can be omitted.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing a method for producing an aerosol paint according to the present invention.

FIG. 2 is a partially cutaway front view of the manufacturing apparatus according to the present invention.

FIG. 3 is a schematic side view showing the internal structure of the gear box.

FIG. 4 is an exploded view showing a connector and the like.

FIG. 5 is a sectional view showing a modification of the check valve.

FIG. 6 is an explanatory view schematically showing a modified example of the method for producing an aerosol paint according to the present invention.

FIG. 7 is a cross-sectional view illustrating a main part of a spray container that can be used in the present invention.

FIG. 8 is a cross-sectional view illustrating a main part of the spray container of FIG. 7 in a state where a content ejection path of a stem is open.

FIG. 9 is a cross-sectional view illustrating a main part of another spray container that can be used in the present invention.

FIG. 10 is an explanatory view schematically showing an initial stage of another example of the method for producing an aerosol paint according to the present invention.

FIG. 11 is an explanatory view schematically showing a state where the liquid dispersion pigment is filled in a spray container from the state of FIG.

FIG. 12 is an explanatory view schematically showing an initial stage of still another case of the method for producing an aerosol paint according to the present invention.

13 is an explanatory diagram schematically showing a state in which the liquid dispersion pigment is filled in a spray container from the state of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spray container 2,200 Stem 15 Check valve 201 Contents ejection path A, 3,4,5 Injection means P, 33,43,53 Piston S, 31,41,51 Syringe N, 32,42,52 Nozzle C , 6,7,8 Connecting device

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 83/38 C09D 7/14

Claims (2)

(57) [Claims] 1. A method for producing an aerosol paint, in which a plurality of types of liquid dispersion pigments having different colors are mixed and toned, wherein the liquid dispersion pigment discarded after each use and collected in a syringe is used with a piston. A nozzle port of a nozzle of an injection means which is a medical or industrial disposable syringe having an extruding function, a stem having a normally closed content ejection path opened by an opening operation, and a solvent, a binder component, and a high pressure gas for ejection. Has a check valve function of allowing the fluid to pass from the nozzle toward the stem through the ejection path of the stem of the spray container pre-filled, and preventing the passage of the fluid from the stem toward the nozzle. In a state of being connected with the connecting tool, the necessary amount of the liquid dispersion pigment collected in the injection means is sprayed by a single pushing operation of the injection means. Through the operation of pushing into the spray container, a plurality of types of liquid dispersed pigments are filled in the spray container without being subjected to toning by mixing, and the liquid dispersed pigment filled in the spray container is filled in the spray container. A process for producing an aerosol paint, wherein 2. An aerosol paint manufacturing apparatus directly used for performing the aerosol paint manufacturing method according to claim 1, wherein a syringe having a nozzle and a total amount of a required amount of the liquid dispersed pigment collected in the syringe are provided. A liquid dispersing pigment injection means having a piston for extruding from the nozzle without performing toning by mixing, a stem having a normally closed content ejection path opened by an opening operation, and a solvent and a binder component. A connector for communicating the ejection path of the stem of the spray container and the nozzle port of the nozzle of the spray container that is pre-filled with the injection high-pressure gas,
The connection tool has a check valve function of passing fluid from the nozzle toward the stem and preventing passage of fluid from the stem toward the nozzle, and the injection means is used for medical or industrial purposes. An aerosol paint manufacturing apparatus characterized by being a disposable syringe for use in aerosols.