JP2009040464A - Coat spray can - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable coat spray can designed so as to make it possible even for a general user to easily apply high-quality silver mirror plating. <P>SOLUTION: The coat spray can includes: a first bag 3 and a second bag 4 which are filled with a first painting liquid 12 and a second painting liquid 13 respectively and suspended in a container body 2 so as to communicate with a first valve 19 and a second valve 20 respectively; and a filler 11 injected in a space outside the first and second bag bodies 3 and 4 and within the container body 2. When the first and second valves 19 and 20 are simultaneously opened by an operating member 8, the first and second painting liquids 12 and 13 are simultaneously discharged from a first injection nozzle 9 and a second injection nozzle 10 respectively by the pressure of the filler 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a coating spray can used for silver mirror coating (also referred to as “silver mirror plating coating”) using a silver mirror reaction.

  Since chromium plating technology uses heavy environmentally hazardous substances, which are heavy metals, in recent years, the demand for mirror surface processing technology that forms a silver film on the surface of the material to be coated by applying silver mirror reaction as an alternative technology is increasing. . This is an environmentally friendly silver mirror plating technology. As disclosed in Non-Patent Document 1, this applicant uses a newly developed double-headed gun, and most of resin, metal, bamboo, ceramics, rubber, etc. A silver mirror finish with a deep and brilliant finish is carried out in the factory as a business, and commercial packaging equipment including a two-head gun (silver mirror plating coating system) and its solvent are being sold.

However, such a silver mirror plating system is a large facility for general individual users and the like, and is not easy for general users to use easily.
Therefore, there is a demand for the development of a spray can method that allows the general public to easily perform silver mirror plating.
By the way, conventionally, as a technique related to a spray can that stores two contents inside a spray can and sprays these contents, Patent Documents 1 to 3 also fill the bag body with the contents, Patent Documents 4 and 5 are known as techniques for spraying the contents in a bag by applying pressure from the outside of the bag.
http://mirror-art.jp/index.html JP 2004-322030 A JP 2003-292072 A Japanese Patent Laid-Open No. 11-278554 JP 2001-253484 A Japanese Utility Model Publication No. 63-156987

  The spray can described in Patent Document 1 is a technology having a structure in which a second container is connected to a first container up and down by a connecting member and two liquids are discharged from a valve. The thing of patent document 2 is the spray can formed in the double structure container of an outer container and an inner container. Patent Document 3 is a spray can structure in which two containers are connected side by side in parallel.

  However, in the spray cans of Patent Documents 1 to 3, the propellant that pressurizes the content (solution) and ejects it from the nozzle and the content directly touch in the spray can. That is, since it does not have an isolation structure, there is a problem that the content and the propellant are mixed and the purity of the content is lowered. In other words, if such a spray can is used for silver mirror plating, there is a problem that the plating quality at the finish of silver mirror plating is extremely bad.

In addition, the above-mentioned Patent Document 4 is a spray can having a structure in which two solutions are injected, but the contents (components) in the outer container are in a form that can be mixed with a propellant (injected gas), and therefore have a purity of The lowered contents are jetted. Moreover, since the contents (components) in the bag and the contents in the outer container are jetted in a state of being mixed by a valve, the structure is not suitable for mirror plating.
Moreover, in said patent document 5, although it has the spray can structure of the form which suspended the bag body in the container, it is not the structure which injects two contents (solution) simultaneously.

  The present invention has been made in view of the above technical problems, and an object of the present invention is to provide a paint spray can capable of silver mirror plating coating that can be easily maintained by a general user while maintaining high quality.

In order to solve the above problems, the following measures are taken in the present invention.
(1) That is, the present invention is a paint spray can, and is provided with a first valve and a second valve provided on the pressure-resistant container so that the first valve and the second valve can be opened and closed simultaneously. An operating member having a first injection nozzle and a second injection nozzle communicating with the valve and the second valve, suspended in the container body in communication with the first valve and the second valve, The first bag body and the second bag body filled with the coating liquid, and the filler filled in the internal space of the container body outside the first bag body and the second bag body, When the first valve and the second valve are simultaneously opened, the first coating liquid and the second coating liquid are simultaneously discharged from the first injection nozzle and the second injection nozzle by the pressure of the filler. Ni Characterized in that it was.
According to the configuration of the present invention, since the outer periphery of the first bag body and the second bag body is pressurized to the pressurized state by the filler filled inside the container body, the first member is operated by operating the operating member. When the valve and the second valve are simultaneously communicated with the outside air, the first paint liquid and the second paint liquid are discharged from the first injection nozzle and the second injection nozzle through the first valve and the second valve at substantially the same injection pressure at the same time. Is done. In this way, only the first paint liquid and the second paint liquid can be applied to the object to be coated at the same time by simply operating the operation member of the paint spray can. It is possible to paint by handling the spray can easily and easily.

In addition, since the filler is sealed so as not to be sprayed to the outside from the first spray nozzle and the second spray nozzle, the first bag body and the first paint body and the second paint liquid are completely consumed until they are completely consumed. Since the second bag body is continuously pressurized, a certain coating quality can be obtained.
The coating spray can can be applied not only to silver mirror plating, but also to coating with a general coating liquid.

  In addition, since the first bag body and the second bag body in the present invention are immersed in the liquid of the filler, the first valve and the second valve are subjected to buoyancy and the load on each bag body is reduced. It is suspended.

(2) In addition, the bottom of the container main body is provided with an injection portion that allows injection of the filler but does not leak the filler after injection to the outside.
According to this configuration, since the filler can be injected from the injection portion provided at the bottom instead of being injected from the first injection nozzle and the second injection nozzle, it is possible to efficiently produce the coating spray can. . In addition, once the filler is injected, the injection part blocks the filler from leaking to the outside, so that the filler can be prevented from inadvertently leaking to the outside.

(3) Moreover, the lid | cover which covers the said injection | pouring part was provided in the bottom part of the said container main body, It is characterized by the above-mentioned. According to this, since it is possible to prevent the injection portion from being damaged, it is possible to avoid a situation in which painting is impossible due to leakage of the filler.

(4) The components of the first coating liquid are a silver nitrate solution and aqueous ammonia, and the components of the second coating liquid are a sodium thiosulfate solution.
By setting it as such a structure, a silver nitrate solution and ammonia water can be simultaneously injected from a 1st bag, and a silver nitrate solution and ammonia water can be simultaneously injected from a 2nd bag from a 1st injection nozzle and a 2nd injection nozzle. For this reason, when performing silver mirror plating, first apply a tin chloride solution to the surface to be plated, second wash with pure water, third, wash with pure, then apply silver nitrate solution, and In the fourth step, this one and two liquids are applied to complete silver mirror plating.
By discharging a silver nitrate solution, ammonia water, and a sodium thiosulfate solution onto the surface to be coated, silver mirror plating by a silver mirror reaction can be easily and easily applied.
Therefore, since no environmentally hazardous substances such as heavy metals in the chromium plating method as in the prior art are used, silver mirror plating that is friendly to humans and the environment can be realized.

(5) Further, the first bag body and the second bag body are formed of a synthetic resin material such as polyethylene having flexibility.
With such a configuration, the first bag body and the second bag body have chemical resistance to the filler and pressure resistance against the applied pressure of the filler, so the first bag body and the second bag body are filled without breaking. The first coating liquid and the second coating liquid can be retained, and the infiltration of the filler can be avoided. Therefore, the situation where silver nitrate solution, ammonia water and sodium thiosulfate solution are mixed and mixed can be prevented, and the quality of silver mirror plating coating can be maintained because the first paint solution and the second paint solution are discharged in a pure state. Is possible.

(6) The filler is liquefied petroleum gas (LPG) or dimethyl ether (DME) liquefied gas.
With such a configuration, the first bag body and the second bag body are constantly maintained in a pressurized state by the applied pressure exerted from the liquefied petroleum gas or liquefied methyl ether. As a result, the first coating liquid and the second coating liquid (silver nitrate solution, ammonia solution and sodium thiosulfate solution) can be sprayed at a predetermined discharge pressure from the first injection nozzle and the second injection nozzle. become. Therefore, it is possible to realize a paint spray can that can be used by the general public.

(7) Further, the first bag body and the second bag body, and the first valve and the second valve are communicated with each other through a first series pipe and a second communication pipe. .
According to such a configuration, the first bag body and the second bag body can be incorporated into the container body by adjusting the lengths of the first continuous pipe and the second communication pipe, and suspended from the first valve and the second valve. it can. Therefore, even if the capacity of the first bag body and the second bag body, that is, the amount of the coating liquid filled in the interior becomes large, the first bag body and the second bag body have the first bag body due to the strength of these communication pipes. Since it is supported in a stable posture with respect to the valve and the second valve, it is advantageous in preventing the valve and the second valve from coming off the valve.

(8) Further, the first continuous pipe and the second communication pipe are made of SUS304 (stainless steel) or polyethylene.
With this configuration, the first and second communication pipes have high corrosion resistance even when exposed to silver nitrate solution, ammonia solution, sodium thiosulfate solution, and filler. Damage due to corrosion can be favorably avoided, and a reliable paint spray can can be obtained.

  According to the present invention, a high-quality silver mirror plating can be easily and easily performed by general users by holding a paint spray can by hand and spraying it on various objects to be coated such as an automobile bumper, a steering wheel, and a body outer plate. A paint spray can that can be painted can be obtained.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to FIGS. FIG. 1 is an external view schematically showing the outline of a paint spray can according to an embodiment, FIG. 2 is a perspective view of the inside of a container body of the paint spray can seen from the front, and FIG. FIG. 4 is a longitudinal sectional view similar to FIG. 3 for explaining the operation during the discharge operation of the paint spray can.

  A schematic configuration of the paint spray can 1 will be described. The coating spray can 1 is provided on a container body 2 made of a material considering pressure resistance, a first bag body 3 and a second bag body 4 housed in the container body 2, and an upper portion of the container body 2. The valve means 5, the first communication pipe 6 that communicates the first bag body 3 and the valve means 5, the second communication pipe 7 that communicates the second bag body 4 and the valve means 5, and the valve means 5 An operation member 8 having a function of opening and closing; a first injection nozzle 9 and a second injection nozzle 10 which are formed in the operation member 8 and communicate with the first series pipe 6 and the second communication pipe 7, respectively; The filling body 11 is filled with the internal space of the container body 2 and pressurizes the first bag body 3 and the second bag body 4 from the periphery thereof, and the injection section 14 injects the filler 11 into the container body 2. The

  The first bag body 3 and the second bag body 4 are filled with the first paint liquid 12 and the second paint liquid 13 as contents, and the operation member 8 is pushed downward to open the valve means 5. Then, the first paint liquid 12 and the second paint liquid 13 pressurized by the filler 11 pass through the valve means 5 from the first continuous pipe 6 and the second communication pipe 7 and the first injection nozzle 9 and the second paint liquid 13. The two jet nozzles 10 can be discharged to an object not shown.

  The paint spray can 1 will be described more specifically. The container body 2 is made of tin, a nickel-nickel steel plate, a metal plate such as aluminum or stainless steel, or a fiber-reinforced resin material, and is molded as a can having a circular body 2a, a bottom 2b, and an upper 2c. It is formed by. And the container main body 2 is formed in the pressure | voltage resistant structure which can be airtightly hold | maintained so that the filler 11 with which the internal space is filled may not leak outside, and can endure the pressure of a filler. A valve means 5 and an operation member 8 which will be described later are provided on the upper part 2c, and an injection part 14 and the like are provided on the bottom part 2b.

The first bag 3 has a mixed solution 12 of silver nitrate solution and ammonia water as a first coating liquid used for silver mirror plating, and the second bag 4 has a thiol as a second coating liquid. Each of the sodium sulfate solutions 13 is filled. Contrary to the above, the first coating liquid may be a sodium thiosulfate solution, and the second coating liquid may be a silver nitrate solution and aqueous ammonia.
Both the first and second bag bodies 3 and 4 are made of a polyethylene resin material and are formed in a thin film shape so as to be flexible so that a liquid can be accommodated therein. Since both bags 3 and 4 are formed of a polyethylene resin material, they are not broken by being dissolved in a silver nitrate solution, an ammonia solution, and a sodium thiosulfate solution. As a result, it is possible to prevent the bag bodies 3 and 4 from being broken and the filler from entering and being mixed with the first paint liquid 12 and the second paint liquid 13, thereby reducing the quality of silver mirror plating and silver mirror plating. I try not to cause any trouble.

  A first series pipe 6 and a second communication pipe 7 are provided between the first bag body 3 and the valve means 5 and between the second bag body 4 and the valve means 5, respectively. Each of the communication pipes 6 and 7 is preferably a pipe made of a stainless material called SUS304 having a high strength, but may be a pipe made of polyethylene or a synthetic resin material such as ethylene vinyl alcohol.

  Moreover, the injection | pouring part 14 is attached to the bottom part 2b of a container. The injecting section 14 is used when injecting the filler 11 and opens when injecting the filler. However, once the filler is injected, the injecting section 14 is closed to operate. A one-way valve mechanism (not shown) that does not leak to the outside of the container is incorporated.

  The injection section 14 is provided with an injection tubule indicated by reference numeral 15 so as to protrude to the outside. However, in order to prevent damage to the internal valve mechanism through the injection tubule 15, the lid 16 is provided at the bottom. 2b.

  LP gas (liquefied petroleum gas, LPG) is used as the filler 11 injected from the injection section 14 and is filled (injected) into the container body 2. As shown in FIG. 2, the injected filler 11 is present in the container body 2 in a two-phase structure of a liquid phase and a gas phase, but the first and second bag bodies 3 and 4 are liquid. It is suspended from the first valve 19 and the second valve 20 with a substantial part immersed in the phase part (note that the liquid phase and the gas phase are not shown in FIG. 1). Thus, since both the bag bodies 3 and 4 are constantly pressurized from the outer periphery by the filler 11 as shown by the arrows in FIG. 4, the first coating liquid 3 and the second coating liquid 4 are supplied to the first series pipe 6. The space between the first valve 19 and the second valve 20 through the second communication pipe 7 is always maintained in a high pressure state.

  In addition to LP gas, liquefied gas such as dimethyl ether (DME) may be injected.

  Next, the valve means 5 will be described with reference to FIGS. The valve means 5 has a housing 18 and is attached to the center of the upper part 2c of the container body 2 via a packing (seal material) 17 having an air-watertight function. A first valve 19 and a second valve 20 having the same structure are arranged in the housing 18 in parallel. For example, the first valve 19 includes a communication hole 20 a communicating with the first series pipe 6, a slider 21 that slides up and down inside the housing 18, and a spring that constantly biases the slider 21 upward. S.

  Although not shown in the drawing, the upper and lower grooves that allow the first paint liquid 12 to flow between the inner peripheral surface of the housing 18 are formed on the outer peripheral surface of the slider 21. Above the slider 21, a stem 22 having a passage 23 is formed integrally with the slider 21, and a communication hole 25 that connects the passage 23 and the inside of the housing 18 is formed in the stem 22. In the non-use state of the spray can shown in FIG. 4, the communication hole 25 is blocked by the packing 17 and the first bag 3 is blocked from communicating with the atmosphere, but when used, the operating member 8 is pushed downward. In this case, the communication hole 25 faces the internal space of the housing 18 and communicates with the atmosphere. Thereby, the first coating liquid 12 in the first bag 3 is discharged from the first injection nozzle 9.

  The structure of the second valve 20 is also the same as that of the first valve 19, and the operation thereof is also the same as described above. About the 2nd valve | bulb 20, the same code | symbol as used for the 1st valve | bulb 19 is attached | subjected, and the description of the detailed structure shall be omitted.

  The operation member 8 is supported by fitting the stems 22 of the first valve 19 and the second valve 20, and two injection passages 26 communicating with the passages 23 of the stems 22 are formed therein. . The first injection nozzle 9 and the second injection nozzle 10 are provided at the outlets of the two injection passages 26, from which the first coating liquid 12 and the second coating liquid 13 are jetted (discharged) to the object to be coated. It has become.

Thus, by pushing the operating member 8 against the spring force of the spring S, the pair of stems 22 can be simultaneously slid downward in the housing 18, and the first paint liquid 12 and the second paint liquid 13 can be moved. At the same time, the spray nozzles 12 and 13 can be discharged to the outside.
The effect | action of the paint spray can 1 of this one embodiment is demonstrated. When silver mirror coating is performed with the paint spray can 1, the paint spray can 1 is held by the hand. When the silver mirror coating is not performed, as shown in FIG. 3, each slider 21 is urged upward by the spring force of each spring S, and each communication hole 25 is closed by the packing 17. For this reason, the 1st bag body 3 and the 2nd bag body 4 maintain the state interrupted | blocked from air | atmosphere, As a result, the 1st coating liquid (for example, silver nitrate solution) 12 and the 2nd coating liquid (for example, ammonia solution) Is not discharged to the outside from the respective injection nozzles 9 and 10.

  When the operating member 8 is pushed downward from this state, as shown in FIG. 4, each slider 18 integrated with each stem 22 moves downward against the spring force of the spring S, and each communication hole 25 is The passages 23 in the stem 22 communicate with the inside of the housing 18 by releasing from the closed state by the packing 17. As a result, the valve means 5 is opened, and the first bag body 3 and the second bag body 4 communicate with the atmosphere, and as a result, the first coating liquid 12 and the second coating liquid 13 pressurized to the filler 11. Is a light oil in each communication hole 25 from the first series pipe 6 and the second communication pipe 7 to flow in each passage 23 and each injection passage 26 and from the first injection nozzle 9 and the second injection nozzle 10 to be coated. At the same time, it is sprayed and silver mirror painting is performed. However, the filler 11 is not injected.

  When the force for pushing the operating member 8 is removed, the state shown in FIG. 3 is restored. That is, the slider 18 is returned upward by the spring force of each spring S, and each communication hole 25 is again closed by the packing 17. For this reason, the first bag body 3 and the second bag body 4 are disconnected from the atmosphere, and the first coating liquid 12 and the second coating liquid 13 can be cut off.

  Since the first bag body 3 and the second bag body 4 are formed of a flexible and flexible synthetic resin material, the first coating liquid 12 and the second coating liquid 13 are reduced as the filling material 11 is reduced. The volume is reduced by pressurizing action. Even if the volume is reduced, the filler 11 is constantly pressurized from the outside of the first bag body 3 and the second bag body 4. The state in which the first coating liquid 12 and the second coating liquid 13 are always filled is maintained, and silver mirror coating can be performed whenever necessary.

  Thus, when performing silver mirror plating with the paint spray can 1 according to the present embodiment, the tin chloride solution is first applied to the surface to be plated, and washed with pure water as the second step. Third, apply a silver nitrate solution to the surface to be painted after pure cleaning, and then, in the fourth step, hold the spray spray can 1 in your hand and apply this one or two liquids to apply. This completes the silver mirror plating.

  Therefore, according to this embodiment, without introducing a large silver mirror plating system even by a general user, the paint spray can 1 can be grasped with one hand and the operation member 8 can be operated with one hand. The silver mirror plating can be easily and easily performed and has the advantage that it can be provided as a product for the general public.

  Further, each element constituting the paint spray can 1, that is, each of the bags 3 and 4, each of the communication pipes 6 and 7, each of the valves 19 and 20, and the operation member 8 are the first paint liquid 12 and the second paint liquid 13. Therefore, the purity of the silver nitrate solution and the ammonia solution is not lowered. As a result, there is an advantage that a high quality finish can be secured for the finish of silver mirror plating.

  Also, according to the present paint spray can 1, unlike the conventional chrome plating technique, no environmentally hazardous substance such as heavy metal is used, so that there is an advantage that a situation causing environmental pollution can be avoided.

  Moreover, in this one embodiment, since the injection | pouring part 14 which inject | pours the filler 11 into the bottom part 2b is provided separately from the 1st valve | bulb 10 and the 2nd valve | bulb 20 of the upper part 2c of a container main body, Twenty structures can be easily configured. Moreover, since the injection | pouring part 14 once has inject | poured the filler 11, since it has the valve structure of the airtight structure which the filler 11 does not leak outside, it can avoid that the discharge pressure of silver mirror plating coating falls. Further, since the bottom 2b is covered with the lid 16, the valve structure of the injection portion 14 by the injection thin tube 15 is not damaged. Therefore, it is possible to prevent the filler from leaking to the outside.

As mentioned above, although the present invention has been described by the above embodiment, the specific configuration is not limited to the above embodiment, and the scope of the present invention is not limited even if there is a design change or the like without departing from the gist of the present invention. Is included.

In the above-described embodiment, the paint spray can used for silver mirror plating is described as an example, but it goes without saying that the present invention can also be applied to other normal painting.

In the above-described embodiment, the first bag body 3 and the second bag body 4 are suspended from the bottom portion 2b at substantially the same height. Instead, either one of the bags is suspended. Of course, the body may be hung from the other bag body so that its height is shifted up and down.

Moreover, in the said one Embodiment, although each bag body 3 and 4 was formed using the polyethylene resin material, you may form using the synthetic resin material which has a softness | flexibility and airtightness other than this. For example, as the synthetic resin material, ethylene vinyl alcohol, VALEX, PAN, PET, LDE, PVC, polyvinylidene chloride, nylon, or the like can be used.

  In the above embodiment, the first bag 3 and the second bag 4 are connected to the first valve 19 and the second valve 20 using the communication pipes 6 and 7, but the communication pipes 6 and 7 are used. Instead, the first bag body and the second bag body may be directly connected to the first valve 19 and the second valve 20.

Needless to say, the structure of the valve means 5 described in the above embodiment is merely an example, and the present invention is not limited thereto.

In the above-described embodiment, the case where the first valve 19 and the second valve 20 are formed in a manner coupled with the common housing 18 has been described. However, the valves 19 and 20 are separated and have separate and independent housings. A structure is also possible.

In addition, the spray can according to this embodiment is used in the fourth step after the first to third steps as described above, and is used in the fourth step (silver nitrate solution and ammonia). Although the case where silver mirror plating is performed by simultaneously applying water) and the second coating liquid (sodium thiosulfate solution) has been described, the first to third previous steps may be omitted. Thus, it goes without saying that silver mirror plating can be realized only by discharging from the spray can 1 as the fourth step.

  The present invention can be used for a portable paint spray can used for silver mirror plating or the like.

1 is an external view schematically showing a summary of a paint spray can according to an embodiment of the present invention. It is the front view which saw through the inside of the container main body of the said paint spray can from the front. FIG. 3 is an enlarged longitudinal sectional view showing the paint spray can of FIG. 2 in a longitudinal sectional view. Similarly, it is the same longitudinal cross-sectional view as FIG. 3 explaining the operation state which discharges a coating liquid.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Paint spray can 2 Container body 3 1st bag body 4 2nd bag body 5 Valve means 6 1st continuous pipe 7 2nd communication pipe 8 Operation member 9 1st injection nozzle 10 2nd injection nozzle 11 Filling member 12 1st Coating liquid 13 Second coating liquid 14 Injection member 15 Injection capillary 16 Lid 17 Packing 18 Housing 19 First valve 20 Second valve 21 Slider 22 Stem 23 Passage 25 Communication hole S Spring

Claims (8)

  A first valve and a second valve provided on an upper portion of the pressure-resistant container body, the first valve and the second valve are provided so that the first valve and the second valve can be opened and closed simultaneously; An operating member having two injection nozzles, a first bag body and a second bag body which are in communication with the first valve and the second valve and are suspended inside the container body and filled with the first coating liquid and the second coating liquid And a filler filled in the internal space of the container body outside the first bag body and the second bag body, and when the first valve and the second valve are simultaneously opened by the operation member In addition, the coating spray can is configured such that the first coating liquid and the second coating liquid are simultaneously discharged from the first injection nozzle and the second injection nozzle by the pressure of the filler.   2. The paint spray can according to claim 1, wherein an injection portion is provided at a bottom portion of the container main body so as to allow the filler to be injected into the container main body but does not leak the filler after the injection to the outside. .   The paint spray can according to claim 2, wherein a lid for covering the injection portion is provided at the bottom of the container body.   The component of said 1st coating liquid is a silver nitrate solution and ammonia water, The component of said 2nd coating liquid is a sodium thiosulfate solution, The coating spray as described in any one of Claims 1-3 characterized by the above-mentioned. can.   The paint spray can according to any one of claims 1 to 4, wherein the first bag body and the second bag body are formed of a synthetic resin material such as polyethylene having flexibility.   The paint spray can according to any one of claims 1 to 5, wherein the filler is liquefied petroleum gas (LPG) or dimethyl ether (DME) liquefied gas.   7. The first bag body and the second bag body, and the first valve and the second valve are communicated with each other via a first series pipe and a second communication pipe. The paint spray can according to any one of the above.   The paint spray can according to claim 7, wherein the first communication pipe and the second communication pipe are made of SUS304 (stainless steel) or polyethylene.

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