JP2019064706A - Spray can set and method of manufacturing 1st spray can and two-component mixed spray device using spray can set - Google Patents

Abstract

To provide a spray can set capable of storing contents damaging the valve for a long time and a method of manufacturing the same.SOLUTION: In order to manufacture a first spray can 1, a liquefied gas propellant A22 is stored in a second spray can 2. The first content 21 not containing the propellant A22 is stored in the first spray can 1 different from the second spray can 2. Before using the first spray can 1, the inverted second spray can 2 is connected to the valve 7 of the first spray can 1. The propellant A22L in the liquid phase is sprayed from the second spray can 2 by gravity and the internal pressure of the second spray can 2, and the propellant A22L in the liquid phase is filled in the first spray can 1.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a spray can set for storing the propellant and the content not containing the propellant in isolation from each other.

  There are known spray can sets in which the contents are stored in two spray cans isolated from each other and the contents are filled from one spray can to the other spray can prior to use to chemically react the two contents. It is done.

  For example, Patent Document 1 discloses a base paint and an aerosol container filled with a propellant for spraying the base paint, and a hardener container filled with pressurized gas at a pressure higher than that of the hardener and the propellant. Liquid curable aerosol paint sprayers have been proposed. When a curing agent container is connected to the injection valve of the aerosol container and filled with the curing agent of the curing agent container by the pressure of pressurized gas, an aerosol container capable of spraying a two-component curable paint is prepared.

Further, for example, in Patent Document 2, as a first embodiment, the second content filled in the pressure resistant container (B) is pressed into the pressure resistant container (A), and the first content and the second content are A content mixing device that generates carbon dioxide gas by a chemical reaction has been proposed. In the pressure container (A), the internal pressure is increased by the generated carbon dioxide gas, and the glass cleaner which is another reaction product can be sprayed
Further, for example, in Patent Document 2, as a second embodiment, the second content filled in the pressure resistant container (B) is pressed into the pressure resistant container (A), and the first content and the second content are A content mixing apparatus has been proposed which vaporizes a low boiling point solvent by the heat of reaction. In the pressure container (A), the expanded low boiling point solvent increases the internal pressure, and can jet urethane foam which is a reaction product.

JP 2000-140714 A JP-A-62-235083

  The liquefied gas propellant is partially vaporized in the spray can and fills not only the liquid phase but also the gas phase. It is atomized into a propellant and the contents also fill the gas phase. In an upright spray can, the valve is in contact with the gas phase.

  In the invention described in Patent Document 1, the base paint and the propellant are filled in the same aerosol container. Depending on the type of base paint, the time period in which the aerosol container can be stored may be significantly reduced, as the base paint atomized by the propellant attacks the valve.

  According to the invention described in Patent Document 2, the second content not containing a propellant can be stored in the pressure resistant container (B). However, in the invention described in Patent Document 2, it is necessary to increase the internal pressure of the pressure container (A) by the reaction of the first content and the second content. The contents that can be jetted from the pressure container (B) are limited to the reaction product, not the unreacted first contents. And since the 1st contents and the 2nd contents are limited to the combination which generates pressure, the reaction products which can be injected can not be chosen freely. In addition, since the reaction speed depends on the temperature, the number of shaking of the spray can, the storage period, and various other factors, there is a problem that the injection pressure is not stable.

  The manufacturing method of the 1st spray can of one embodiment stores the propellant A of a liquefied gas system, and the 1st contents which do not contain the propellant A in the 2nd spray can and the 1st spray can which are mutually different, respectively. Do. Before using the first spray can, the inverted second spray can is connected to the valve of the first spray can. The liquid phase propellant A is sprayed from the second spray can by gravity and the internal pressure of the second spray can, and the propellant A is loaded into the first spray can.

  Moreover, the spray can set of one Embodiment is equipped with the 1st spray can, the 2nd spray can, and a connection member. The first content that does not contain the propellant A is enclosed in the first spray can. The second spray can is filled with the liquefied gas propellant A at a pressure higher than the internal pressure of the first spray can. The connecting member is formed in a tubular shape having one end and the other end. The inner diameters at one end and the other end are the same as the outer diameters of the stems of the first and second spray cans, respectively.

  Moreover, the manufacturing method of the two-component mixed spray apparatus of one embodiment includes: the first content jetted from the first spray can, and the third content jetted from the third spray can different from the first spray can. A two-component mixed spray apparatus is produced which stirs and mixes and discharges. A first spray can, a third spray can for injecting a third content that reacts with the first content, and a two-component mixing gun equipped with a static mixer are provided. Connect the first and third spray cans to the two-component mixing gun. The first contents are jetted from the first spray can, and at the same time, the third contents are jetted from the third spray can. The first contents and the third contents are poured into the proximal end of the static mixer by the internal pressure of the first spray can and the third spray can, and the first contents and the third contents which are mixed by stirring are the tips of the static mixers. Discharge from.

  Moreover, the manufacturing method of the 2 liquid mixing spray apparatus of one Embodiment prepares a 2nd spray can, a 1st spray can, a 3rd spray can, and a 2 liquid mixing gun. In the second spray can, a liquefied gas propellant A is enclosed. The first content that does not contain the propellant A is enclosed in the first spray can. The third spray can can spray the third content that reacts with the first content. The two-component mixing gun comprises a holder, a connecting tube and a static mixer. Secure the first and second spray cans in the holder. Attach one end and the proximal end of the connecting tube to the valve of the first spray can and the second spray can, respectively. Simultaneously pressing the one end and the other end brings the first spray can and the second spray can into communication with each other, and fills the first spray can with the liquid phase propellant A sprayed by the internal pressure of the second spray can. Connect the first and third spray cans to the static mixer. The first contents are jetted from the first spray can, and at the same time, the third contents are jetted from the third spray can. The first and third contents are poured into the proximal end of the static mixer by the internal pressure of the first and third spray cans, and the stirred and mixed first and third contents are discharged from the tip of the static mixer Do.

  According to the manufacturing method of the first spray can of one embodiment, the first content and the propellant A for spraying the first content can be stored in a mutually isolated state, and when it is desired to use the propellant A A filled first spray can can be made.

  Moreover, according to the spray can set of one Embodiment, the 1st content and the propellant A which injects this 1st content are stored in the mutually isolated state. Since the first content is not atomized by the propellant A, deterioration of the valve in contact with the gas phase portion of the first spray can can be suppressed. Even if the first content has the property of damaging the valve, the first spray can can be stored for a long time.

  In addition, according to the method of manufacturing the two-component mixed spray apparatus of one embodiment, the two-component mixed spray apparatus capable of coping with small-scale construction and repair work, touch-up after construction, and the like can be manufactured simply by assembling the spray can set. it can. In this two-component mixed spray apparatus, two components as materials are supplied from a spray can, and the two components are stirred and mixed by the pressure of the propellants A and B. It is not necessary to prepare a large-scale device such as a high-pressure metering device for measuring and stirring and mixing the two liquids, and a drum pump for supplying the material of a drum to the high-pressure metering device. There is also no need for a power source or compressor to drive those devices. It is excellent in handling and can reduce the burden on workers.

FIG. 1 is a cross-sectional view showing an example of a spray can set. FIG. 2 is a cross-sectional view illustrating the procedure for connecting the second spray can to the first spray can. FIG. 3 is a cross-sectional view for explaining the procedure for filling the first spray can with the propellant A of the second spray can. FIG. 4 is a plan view for explaining the assembling procedure of the two-component mixture spray device. FIG. 5 is a cross-sectional view showing a spray can set according to a second embodiment.

  The two-component mixture spray apparatus and the method of manufacturing the same according to the first embodiment will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing an example of a spray can set 10. The spray can set 10 includes at least a first spray can set 11. When the first spray can set 11 is assembled in the procedure shown in FIGS. 2 and 3, the first spray can 1E in a state of being filled with the propellant A22 can be manufactured. Moreover, if the spray can set 10 is assembled in the procedure shown by FIG. 2 thru | or FIG. 4, two-liquid mixing spray apparatus 10E shown by a dashed-two dotted line in FIG. 1 can be manufactured. Each component will be described in detail below.

  As shown in FIG. 1, the spray can set 10 includes a first spray can 1, a second spray can 2, a third spray can 3, a fourth spray can 4, a connecting member 5, and a two-component mixing gun. 6 and. The first to fourth spray cans 1, 2, 3 and 4 are disposable spray cans, each of which has a valve 7. The connecting member 5 is formed in a cylindrical shape that fits with the valve 7. The connecting member 5 will be described later with reference to FIG.

  In the following description, the first and second spray cans 1 and 2 and the connecting member 5 may be referred to as a spray can set (first spray can set) 11, among others. The spray can sets 10 and 11 are both examples of the spray can set of this embodiment.

  The first contents 21 are enclosed in the first spray can 1. The first content 21 according to the present embodiment is characterized in that it does not contain the liquefied gas propellant A. The first contents 21 have the property of attacking and deteriorating the valve 7 when atomized. An example of the first content 21 is an A agent containing an isocyanate as a main component. The gasket 64 (shown in FIG. 3) constituting the valve 7 contains calcium carbonate or the like as a filler. When the isocyanate is enclosed in a spray can together with a propellant, depending on the content of calcium carbonate in the filler, the isocyanate may react with the calcium carbonate to gradually cure the gasket 64.

  The second spray can 2 is filled with a liquefied gas-based propellant A (second content) 22. The propellant A22 is, for example, dimethyl ether (DME) or liquefied petroleum gas (LPG). As the propellant A22 according to the present embodiment, dimethyl ether is suitable. Dimethyl ether expands more rapidly than liquefied petroleum gas when injected from a spray can and can form very fine mist content.

  The third content 23 is enclosed in the third spray can 3. The third content 23 is, for example, an agent B containing a polyamine as a main component. Polyurea can be formed by adding and stirring an agent B containing a polyamine as a main component to the agent A containing an isocyanate as a main component. The combination of the first and third contents 21 and 23 is not limited to this, and may be another combination. For example, the two-component mixed spray device 10E may be configured to spray polyurethane by combining the first content 21 mainly composed of isocyanate and the third content 23 mainly composed of polyol.

  In the case of constituting a two-component mixed spray apparatus 10E for spraying polyurea by stirring and mixing the agent A and the agent B, an example of the agent A is an aromatic such as 4,4'-diphenylmethane diisocyanate (4,4'-MDI) It is an isocyanate. The isocyanate may be aliphatic isocyanate. The agent A may be a mixture in which a part of these isocyanates is reacted with a polyol to form a urethane prepolymer.

  An example of the agent B is a mixture of an polyamine having an average molecular weight of 1,000 to 10,000 and an aromatic diamine. The polyamine is preferably, for example, a polyalkylene amine such as polyoxypropylene diamine. A plurality of aromatic diamines may be mixed. The compounding ratio of agent B is 5 to 20 parts by weight of aromatic diamine to 100 parts by weight of polyamine.

  The fourth spray can 4 is filled with a propellant B (fourth content) 24. The propellant B24 is a propellant of the same type as the propellant A22. In addition, the 4th spray can 4 is not an essential structure in this embodiment. The fourth spray can 4 may be omitted by preparing a third spray can 3E filled with the propellant B24 in advance.

  The first spray can 1 may be filled with an inert gas such as nitrogen gas together with the first contents 21. Similarly, the second to fourth spray cans 2 may be filled with inert gas such as nitrogen gas together with the respective contents 22, 23, 24. In addition, the first to fourth contents 21, 22, 23, 24 may further contain a curing retarder and a desiccant.

  The curing retarder is compatible with the agent A and the agent B to lower the viscosity thereof, and delays the curing of the agent A mixed with the agent B. An example of a cure retarder is a solvent such as methyl ethyl ketone (MEK). The curing retarder may be any solvent having excellent compatibility with the agent A or B, and various general-purpose solvents such as acetone can be used. The desiccant removes the water in the spray can enclosed with the contents. An example of a desiccant is a powdered or granular molecular sieve.

  The two-component mixing gun 6 includes a static mixer 31, a grip 32, attachments 33A and 33B, tubes 34A and 34B, and a holder 35. The static mixer 31 is attached to the grip 32. The static mixer 31 will be described later with reference to FIG.

  The grip 32 is formed, for example, in a bowl shape having a size easily grasped by one hand. The shape of the grip 32 is not limited to this, and may be another shape. The attachments 33A, 33B are respectively attached to the valves 7 of the first and third spray cans 1E, 3E. The tubes 34A, 34B extend from the grip 32 and connect the attachments 33A, 33B and the static mixer 31.

  The first and third spray cans 1E and 3E are mounted on the holder 35 with the valve 7 directed upward, as shown by a two-dot chain line in FIG. The holder 35 includes a fixing portion 36 for fixing the first and third spray cans 1E and 3E, and an operation portion 37 for opening and closing the valve 7 of the first and third spray cans 1E and 3E. The operation unit 37 includes a lift plate 38 facing the attachments 33A and 33B from above, and a height adjustment screw 39 that adjusts the distance between the lift plate 38 and the fixed portion 36. When the lift plate 38 is lowered to depress the attachments 33A, 33B, the valves 7 of the first and third spray cans 1E, 3E are opened.

  In the example shown in FIG. 1, the two-component mixing gun 6 includes a valve 40 provided in a flow path from the first and third spray cans 1E and 3E to the static mixer 31, and a trigger 41 for operating the opening and closing of the valve 40. And further. The valve 40 is incorporated in the grip 32 and connected to, for example, the ends of the tubes 34A, 34B. The trigger 41 is attached to the grip 32. The valve 40 and the trigger 41 are not essential components and may be omitted.

  FIG. 2 is a cross-sectional view for explaining the procedure for connecting the second spray can 2 to the first spray can 1. FIG. 3 is a cross-sectional view for explaining the procedure for filling the first spray can with the propellant A of the second spray can. First, the internal structure of the first and second spray cans 1 and 2 will be described with reference to FIG. 2, and the internal structure of the valve 7 will be described with reference to FIG. Next, a method of manufacturing the first spray can 1E filled with the propellant A22 will be described with reference to FIGS. 2 and 3. In addition, the manufacturing method of the 3rd spray can 3E with which propellant B24 was filled is a procedure substantially the same as the manufacturing method of the 1st spray can 1E. Therefore, the method of manufacturing the first spray can 1E will be described in detail, and the description of the method of manufacturing the third spray can 3E will be omitted.

  As shown in FIG. 2, the first spray can 1 has a gas phase portion 1 </ b> G and a liquid phase portion 1 </ b> L occupied by the first contents 21. Similarly, the second spray can 2 includes a gas phase portion 2G and a liquid phase portion 2L occupied by a liquid phase propellant A22L. The gaseous phase portion 2G of the second spray can 2 is filled with the gaseous phase propellant A22G vaporized from the liquid phase propellant A22L. On the other hand, in the gas phase portion 1G of the first spray can 1, the propellant A22G in the gas phase is not present. The gas phase portion 1G is occupied by an inert gas such as nitrogen gas.

  The first spray can 1 is formed in a cylindrical shape, and includes a body 51, a bottom 52, and a lid 53. The bottom 52 may be formed integrally with the body 51. The valve 7 is provided to the lid 53. A tube 54 is connected to the valve 7. The third spray can 3 has substantially the same function and shape as the first spray can 1. The second and fourth spray cans 2 and 4 have substantially the same function and shape as the first spray can 1 except that the tube 54 is omitted. Therefore, the first spray can 1 will be described in detail, and overlapping descriptions of the second to fourth spray cans 2, 3, and 4 will be omitted.

  The lid 53 has an opening 53A at the center. A mountain cup 55 is placed over the opening 53A. The valve 7 is fixed to the mountain cup 55 and is located in the gas phase portion 1 G of the first and second spray cans 1. The tube 54 has a sufficient length to reach the bottom 52 of the first spray can 1. The tube 54 has one end 54A connected to the valve 7 and the other end (free end) 54B opposite to the one end 54A. The other end 54 B is buried in the first content 21.

  The valve 7 according to the present embodiment is a general-purpose valve that is easily obtained as a spray can. In the example shown in FIG. 3, the valve 7 includes a housing 61, a stem 62, a coil spring 63, and a gasket (stem rubber) 64. The housing 61 is formed in a tubular shape having an upper cylindrical portion 61A and a lower cylindrical portion 61B smaller in diameter than the upper cylindrical portion 61A. The upper cylindrical portion 61A is fixed to the mountain cup 55. One end 54A of the tube 54 is connected to the lower cylindrical portion 61B.

  The stem 62 is formed in a rod shape having a distal end portion 62A which protrudes to the outside of the spray can, and a proximal end portion 62B which is larger in diameter than the distal end portion 62A and inserted into the upper cylindrical portion 61A of the housing 61. . A plurality of inflow holes are formed between the distal end portion 62A and the proximal end portion 62B. An injection hole is formed at the projecting end of the tip portion 62A.

  The stem 62 is biased toward the outside of the housing 61 by a coil spring 63 provided inside the housing 61. The stem 62 can move in a projecting and retracting manner between a closed position in which the tip 62A protrudes from the housing 61 and an open position in which the tip 62A is recessed relative to the housing 61 relative to the closed position.

  The gasket 64 is formed in a disk shape having a through hole at the center, and has flexibility. The gasket 64 is provided on the upper cylindrical portion 61 </ b> A of the housing 61 and is covered by the mountain cup 55. The valve 7 opens or closes the opening 53A of the first spray can 1 by the deformation of the gasket 64. For example, the gasket 64 closes the inflow hole of the stem 62 when the stem 62 is in the closed position. With the stem 62 pressed down against the biasing force of the coil spring 63, the inflow hole of the stem 62 is opened.

  An example of the material of the gasket 64 is butyl rubber (IIR). If the material of the gasket is nitrile rubber (NBR), it is not preferable because the gasket may swell due to the isocyanate of agent A and methyl ethyl ketone as a curing retarder. Fluorine rubber (FKM) is not preferable because the gasket may swell due to dimethyl ether as a propellant and methyl ethyl ketone as a curing retarder.

  When the material of the gasket is butyl rubber, it is more resistant to isocyanate contained in the first content 21 and dimethyl ether contained in the second content, as compared with nitrile rubber and fluororubber. However, in a general-purpose valve which is easy to obtain, the gasket contains calcium carbonate or the like as a filler for butyl rubber. Such gaskets may gradually cure when in contact with isocyanates over time.

  The inner diameter of one end 5A of the connecting member 5 is formed to be substantially the same as the outer diameter of the tip portion 62A of the stem 62 of the first spray can 1. The inner diameter of the other end 5 B is formed to be substantially the same as the outer diameter of the tip end portion 62 A of the stem 62 of the second spray can 2. In the example shown in FIG. 3, the outer diameters of the tip portions 62A of the stems 62 of the first and second spray cans 1 and 2 are formed substantially the same.

  In order to manufacture the first spray can 1 E filled with the propellant A 22 using the first spray can set 11, first, as shown in FIG. 2, the other end 5 B of the connecting member 5 is made of the second spray can 2. The valve 7 is mounted, and the second spray can 2 is turned upside down so that the end 5 A of the connecting member 5 is mounted on the valve 7 of the first spray can 1.

  At this time, inside the second spray can 2, as shown in FIG. 3, the propellant A22L in the liquid phase moves from the bottom 52 side to the lid 53 by gravity and is expelled by the propellant A22L in the liquid phase. The gaseous propellant A22G moves from the lid 53 side to the bottom 52 side.

  When the valve 7 of the second spray can 2 is pressed against the valve 7 of the first spray can 1 through the connecting member 5, the stems 62 of the first and second spray cans 1 and 2 are pressed against each other to move to the open position . The first and second spray cans 1 and 2 communicate with each other through the valve 7 of the second spray can 2, the connection member 5, and the valve 7 of the first spray can 1.

  The valve 7 of the second spray can 2 is immersed in the liquid phase propellant A22L moved by gravity. The second spray can 2 has a higher internal pressure than the first spray can 1 due to the presence of the propellant A22G in the gas phase. In the second spray can 2, the gas phase propellant A 22 G positioned on the bottom 52 side presses the liquid phase propellant A 22 L toward the lid 53. When the first and second spray cans 1 and 2 communicate with each other, the pressure of the gas phase propellant A22G fills the first spray can 1 with the liquid phase propellant A22L.

  According to the procedure of FIG. 2 and FIG. 3 described above, the first spray can 1E filled with the propellant A22 is manufactured. Preferably, the second spray can 2 is heated in advance before being connected to the first spray can 1. However, the heating of the second spray can 2 is not an essential procedure in the method of manufacturing the first spray can 1E. In the case of heating, for example, the second spray can 2 can be heated by putting it into a bowl covered with warm water. The heating method is not limited to the hot water bath, and may be another method.

  When the second spray can 2 is heated, the propellant A22G in the gas phase filling the gas phase portion 2G of the second spray can 2 expands and the internal pressure of the second spray can 2 increases. The amount of the gas phase propellant A22G which is used to fill the first spray can 1 with the liquid phase propellant A22L and remains in the second spray can 2 can be reduced.

  In addition to the liquefied gas propellant A22 and the propellant B24, the second and fourth spray cans 2 and 4 may be further filled with a compressed gas propellant. As a propellant of a compressed gas system, compressed carbon dioxide gas and nitrogen gas can be mentioned. Since the propellant of the compressed gas system is not easily liquefied even when compressed, the insides of the second and fourth spray cans 2 and 4 can be adjusted to a pressure higher than the vapor pressure of the propellant A 22 and the propellant B 24. If the compressed gas type propellant is filled, the internal pressure of the second spray can 2 can be increased to reduce the amount of the gaseous phase propellant A 22 G remaining in the second spray can 2.

  FIG. 4: is a top view explaining the assembly procedure and schematic structure of a two-component liquid mixture spray apparatus. As shown in FIG. 4, the static mixer 31 is formed in a cylindrical shape having a proximal end 31A and a distal end 31B. The proximal end 31A of the static mixer 31 is configured to be removable from the grip 32. The mounted static mixer 31 is fixed by, for example, a cap 42 screwed with the grip 32. In addition, the fixing method of the static mixer 31 with respect to the grip 32 is not restricted to this, A luer lock type connector etc. may be used.

  The static mixer 31 includes a left element 31L and a right element 31R. The alternately arranged left element 31L and right element 31R are connected in series. The left element 31L divides the fluid passing through the static mixer 31 into two and rotates left. The right element 31 R divides the fluid passing through the static mixer 31 into two and rotates it to the right. The two liquids passing through the static mixer 31 are stirred and mixed by the left element 31L and the right element 31R whose rotational directions are alternately switched.

  In order to assemble the two-component mixed spray apparatus 10E, first, the first spray can 1E filled with the propellant A22 and the third spray can 3E filled with the propellant B24 according to the procedure shown in FIGS. 2 and 3. Prepare. As shown in FIG. 1, the prepared first and third spray cans 1E and 3E are fixed to the fixing portion 36 of the holder 35.

  As shown in FIG. 4, the attachments 33A and 33B are attached to the valve 7 of the fixed first and third spray cans 1E and 3E. The static mixer 31 is attached to the grip 32. Thereby, the two-component mixture spray device 10E is manufactured.

  In order to use the two-component mixture spray apparatus 10E, the height adjustment screw 39 (shown in FIG. 1) is tightened to lower the lift plate 38. The attachment 33A, 33B is pressed by the lift plate 38, and the valve 7 of the first and third spray cans 1E, 3E is opened.

  When the valve 7 is opened, the pressure of the propellant A 22 and the propellant B 24 causes the first and third contents 21 and 23 to flow into the proximal end 31 A of the static mixer 31. The first and third contents 21 and 23 flowing through the static mixer 31 are stirred and mixed by the left element 31L and the right element 31R, and are discharged from the tip 31B of the static mixer 31. The delayed curing agent and the liquefied gas propellant A22L and the propellant B24L lower the viscosity of the first and third contents 21 and 23 so as to easily flow through the static mixer 31.

  According to the first spray can set 11 of the present embodiment configured as described above and the method for producing the first spray can 1E using the first spray can set 11, the propellant A22 of liquefied gas type and the propellant A22 are used. The first contents 21 not contained are stored in the second spray can 2 and the first spray can 1 which are different from each other.

  According to the first spray can set 11 and the method of manufacturing the first spray can 1E using the same, the first contents 21 and the propellant A 22 for jetting the first contents 21 can be stored in a mutually separated state The first spray can 1E filled with the propellant A22 can be manufactured when it is desired to use it. Since the first content 21 is not atomized by the propellant A 22 during storage, deterioration of the valve 7 provided in the gas phase portion 1 G of the first spray can 1 can be suppressed. Even if the first contents 21 have the property of damaging the valve 7, the first spray can 1 can be stored for a long time.

  The valve 7 of the first spray can 1 constituting the first spray can set 11 can use a general purpose product as it is. The material of the gasket 64 of the valve 7 is, for example, butyl rubber. Generally in gaskets for spray cans, gaskets such as butyl rubber, nitrile rubber, fluorine rubber and the like are used. It is also considered that if a conventional spray can is replaced with a gasket such as perfluoroelastomer having excellent chemical resistance, the spray can can be configured such that the valve is unlikely to deteriorate even if isocyanate or dimethyl ether is stored for a long time.

  However, valves for spray cans using such gaskets are not common. Providing custom-made valves increases the cost of producing spray cans. The advantage of spray cans is that they can be cheap and easily disposable. According to this embodiment, it is possible to configure the first spray can set 11 that can be stored for a long time by using the inexpensive and easily available general-purpose valve 7 as it is, and the first spray can 1E can be manufactured by a simple procedure.

  Further, according to the spray can set 10 of the present embodiment and the method of manufacturing the two-liquid mixing spray device 10E using the spray can set 10, the two-liquid mixing spray device 10E can be manufactured only by assembling the spray can set 10. The two-component mixed spray apparatus 10E supplies two components as materials from the first and third spray cans 1E and 3E, stirs and mixes the components according to the pressure of the propellant A22 and the propellant B24, and discharges the two components. For example, if the first content 21 of the first spray can 1E is an agent A containing isocyanate as a main component, and the third content 23 of the third spray can 3E is a agent B containing polyamine as a main component, The two liquids discharged from the liquid mixing spray device 10E are polyurea.

  Polyurea has various features that other lining materials do not have, but on the other hand, a large-scale dedicated device consisting of a high pressure line was required for its construction. For example, in the polyurea spraying method using a high-pressure two-component collision mixing type spraying apparatus, a drum pump for pumping both components from a drum of an isocyanate component and a polyamine component and high pressure are applied to each component of a coating agent The high pressure metallizing device must be brought into the construction site.

  Such devices are large and difficult to maneuver by themselves, and multiple operators must work together with gun operation and hose operation. Also, because such devices use materials provided by drums etc., they may be wasted without being used up on a small scale installation. In addition, power supplies and compressors are needed to drive these devices.

  On the other hand, according to the spray can set 10 of this embodiment and the manufacturing method using the same, it is possible to manufacture a two-liquid mixed spray device 10E which does not require a power source or a compressor. The power of the two-component mixture spray device 10E may be propellant A22 and propellant B24 filled in the first and third spray cans 1 and 3. Since the spray can set 10 is provided in the form of a single-use spray can, a large amount of material is not used up and wasted. Only the number to be used can be easily prepared at the construction site by the procedures of FIGS. 2 and 3. We can cope with small scale construction and repair work, touch-up after construction. It is excellent in handling and can reduce the burden on workers.

  The two-component mixed spray apparatus 10E manufactured in this embodiment uses a liquefied gas-based propellant as the propellant A22 and the propellant B24. In addition, a cure retarder may be added. In the case of agents A and B whose viscosity is reduced by the liquid phase propellant A22 and propellant B24 and the curing retarder, the two liquids are poured into the static mixer 31 and stirred sufficiently only with the pressure of the propellant A22 and propellant B24 it can.

  If the internal pressures of the first and third spray cans 1E and 3E are significantly different in the two-component mixture spray device 10E, only one of the first and third contents 21 and 23 may be biased and discharged.

  In the present embodiment, the third spray can 3E in a state of being filled with the propellant B24 is prepared by the procedure of FIG. 2 and FIG. Since the first and third spray cans 1E and 3E filled with the same type of propellant under the same conditions are used, the first and third contents 21 and 23 can be poured into the static mixer 31 in a balanced manner.

  Next, with reference to FIG. 5, the two-component mixture spray apparatus of the second embodiment and the method of manufacturing the same will be described. The components having the same or similar functions as the components of the first embodiment are denoted by the same reference numerals, and the description of the corresponding first embodiment is referred to, and the description thereof is omitted here. The other configuration is the same as that of the first embodiment.

Second Embodiment
FIG. 5 is a cross-sectional view showing a spray can set 110 used for manufacturing the two-component mixture spray device 110E of the second embodiment. In the second embodiment, the first spray can 1 is filled with the propellant A22 injected from the second spray can 2 by the connection tube 105 attached to the two-component mixing gun 106 instead of the connection member 5. It differs from the embodiment.

  As shown in FIG. 5, the spray can set 110 according to the second embodiment includes a first spray can 1, a second spray can 2, a third spray can 3E, and a two-liquid mixing gun 106. There is. The first to third spray cans 1 and 3E are the same as those in the first embodiment. The second spray can 2 is identical to the first embodiment except that it comprises the tube 54 shown in FIG. As in the first embodiment, the third spray can 3E, the fourth spray can 4 in which the liquefied gas propellant B24 is enclosed, and the third content 23 in which the propellant B24 is not contained is enclosed. It may be stored separately from the third spray can 3.

  Similar to the first embodiment, the two-component mixing gun 106 includes a static mixer 31, attachments 33A and 33B, and tubes 34A and 34B. In the example shown in FIG. 2, the static mixer 31, the attachments 33A, 33B, and the tubes 34A, 34B are integrally formed.

  The two-component mixing gun 106 according to the second embodiment further includes a connection tube 105 and a holder 135. At one end of the connection tube 105, an attachment 133A is provided. An attachment 133B is provided at the other end. The attachments 133A and 133B are attached to the valves 7 of the first and second spray cans 1 and 2, respectively.

  The holder 135 is provided with a fixing portion 136 for fixing the spray can (1, 1E, 2, 3, 3E, 4), and a lift plate 138 for opening and closing the valve 7 of the spray can. A grip 132 is attached to the fixing portion 136. The elevating plate 138 is opposed to the attachment (33A, 33B, 133A, 133B) attached to the valve 7 from the upper side, and is supported rotatably around the hinge 139. When the lift plate 138 is depressed to depress the attachment, the valve 7 of the spray can is opened.

  In order to manufacture the first spray can 1E filled with the propellant A22 using the spray can set 110, first, the first spray can 1 without the propellant A22 filled is held together with the second spray can holder 135 Fix to Attachments 133A and 133B provided at one end and the other end of the connection tube 105 are attached to the valve 7 of the first and second spray cans 1 and 2, respectively.

  When the lift plate 138 is depressed, the attachments 133A and 133B are simultaneously depressed to open the valves 7 of the first and second spray cans 1 and 2. The first and second spray cans 1 and 2 communicate with each other, and the liquid phase propellant A 22 injected by the internal pressure of the second spray can 2 is filled in the first spray can 1. Thereby, the 1st spray can 1E with which propellant A22 was filled is manufactured. In the same manner, the third spray can 3E filled with the propellant B24 may be manufactured from the third spray can 3 and the fourth spray can 4 in a state in which the propellant B24 is not filled.

  In order to assemble the two-component mixed spray apparatus 110E, the second spray can 2 and the third spray can 3E are exchanged, and the connection tube 105 and the static mixer 31 are exchanged. Specifically, the second spray can 2 is removed from the holder 135, and the third spray can 3E is mounted instead. Attachments 33A and 33B connected to the static mixer 31 are attached to the valves 7 of the first and third spray cans 1E and 3E.

  When the lift plate 138 is depressed, the attachments 33A and 33B are simultaneously depressed to open the valve 7 of the first and third spray cans 1E and 3E. When the valve 7 is opened, the pressure of the propellant A 22 and the propellant B 24 causes the first and third contents 21 and 23 to flow into the proximal end 31 A of the static mixer 31. The first and third contents 21 and 23 flowing through the static mixer 31 are stirred and mixed by the left element 31L and the right element 31R (shown in FIG. 4) and discharged from the tip 31B of the static mixer 31.

  According to the second embodiment, as in the first embodiment, the first content 21 and the propellant A 22 for injecting the first content 21 can be stored in a mutually isolated state, and the injection is used when it is desired to use The first spray can 1E filled with the agent A22 can be manufactured. Since the first content 21 is not atomized by the propellant A22 during storage, deterioration of the valve 7 provided in the gas phase portion 1G (shown in FIG. 2) of the first spray can 1 can be suppressed. Even if the first contents 21 have the property of damaging the valve 7, the first spray can 1 can be stored for a long time.

  The present invention can be implemented by adding various modifications to the configuration of each embodiment described above. For example, the configurations disclosed in each embodiment may be combined as appropriate. The embodiment modified without departing from the scope of the invention is included in the invention described in the claims and the equivalents thereof.

  1 ... 1st spray can, 1E ... 1st spray can in the state filled with propellant, 2 ... 2nd spray can, 3 ... 3rd spray can, 3E ... 3rd spray can in the state filled with propellant 4, 4th spray can, 5 ... connection member, 6: two-component mixing gun, 7: valve, 10E: two-component mixing spray apparatus, 11: spray can set (first spray can set), 21: first content 22: Propellant A, 22 L: Liquid phase propellant A, 23: Third content, 24: Propellant B, 24 L: Liquid phase propellant B, 31: Static mixer, 62: Stem, 105: 105 Connecting tube, 135 ... holder.

Claims (10)

Storing a liquefied gas propellant A and a first content not containing the propellant A in different second spray cans and first spray cans, respectively;
Prior to using the first spray can, the inverted second spray can is connected to the valve of the first spray can,
A method of manufacturing a first spray can, wherein the propellant A in a liquid phase is sprayed from the second spray can by gravity and the internal pressure of the second spray can, and the propellant A is filled into the first spray can.   The method for manufacturing a first spray can according to claim 1, wherein the first content containing the propellant A has a property of damaging the valve of the first spray can with the passage of time.   The method for producing a first spray can according to claim 2, wherein the first content contains an A-based agent containing an isocyanate as a main component.   The method according to any one of claims 1 to 3, wherein the second spray can is heated to increase the internal pressure of the second spray can before connecting the second spray can to the first spray can. The first method for producing a spray can. The second spray can is further filled with a propellant of a compressed gas system,
The method for manufacturing a first spray can according to any one of claims 1 to 4, wherein the internal pressure of the second spray can is adjusted to be higher than the vapor pressure of the propellant A. A manufacturing method of a two-liquid mixing spray apparatus for stirring, mixing and discharging a first content jetted from a first spray can and a third content jetted from a third spray can different from the first spray can There,
A first spray can obtained by the manufacturing method according to any one of claims 1 to 5;
A third spray can that sprays a third content that reacts with the first content;
Prepare a two-component mixing gun equipped with a static mixer,
Connecting the first spray can and the third spray can to the two-component mixing gun;
Injecting the first content from the first spray can and simultaneously injecting a third content from the third spray can;
The first content and the third content are poured into the proximal end of the static mixer by the internal pressure of the first spray can and the third spray can, and the first content and the third content are mixed by stirring. The method of manufacturing a two-component mixed spray apparatus, comprising: A propellant B of the same type as the propellant A and a third content not containing the propellant B are respectively stored in a fourth spray can and the third spray can which are different from each other,
The inverted fourth spray can is connected to the valve of the third spray can,
7. The propellant B in a liquid phase is sprayed from the fourth spray can by gravity and the internal pressure of the fourth spray can, and the third spray can filled with the propellant B is prepared. Method of manufacturing a two-component mixture spray apparatus.   The method according to claim 7, wherein the third content includes a B-based agent containing a polyamine as a main component. A first spray can sealed with a first content not containing a propellant A;
A second spray can filled with a liquefied gas propellant A at a pressure higher than the internal pressure of the first spray can;
A connecting member formed in a tubular shape having one end and the other end, wherein the inner diameters of the one end and the other end are respectively equal to the outer diameters of the stems of the first spray can and the second spray can;
Spray can set. A second spray can filled with a liquefied gas propellant A;
A first spray can filled with a first content not containing the propellant A;
A third spray can that sprays a third content that reacts with the first content;
Prepare a two-component mixing gun equipped with a holder, a connecting tube and a static mixer,
Securing the first spray can and the second spray can to the holder;
Attach one end and the proximal end of the connection tube to the valves of the first spray can and the second spray can, respectively;
Simultaneously pressing the one end and the other end brings the first spray can and the second spray can into communication with each other, and the propellant A in the liquid phase sprayed by the internal pressure of the second spray can is the first spray Fill cans
Connecting the first spray can and the third spray can to the static mixer;
Injecting the first content from the first spray can and simultaneously injecting a third content from the third spray can;
The first content and the third content are poured into the proximal end of the static mixer by the internal pressure of the first spray can and the third spray can, and the first content and the third content are mixed by stirring. The method of manufacturing a two-component mixed spray apparatus, comprising:

Images