JP2012166464A - Liquid mixing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid mixing apparatus capable of accurately blending even when the blending amount of an additive is remarkably small with respect to a main agent and which quickly transfers to and from a measuring measure.SOLUTION: In the liquid mixing apparatus 10 for preparing a liquid mixture by adding the additive 2 to the main agent 1, the main agent 1 stored in a storage tank 11 is transferred by its own weight to a supply tank 20 through piping 19 sequentially connecting a first automatic valve 12, a measuring tank 13, a second automatic valve 14, an agitating tank 16 having an agitating apparatus 15, a third automatic valve 17, and a static mixer. A spatial capacity in the piping 19 including the inside of the measuring tank 13 delimited by the first automatic valve 12 and the by the second automatic valve 14 functions as a measuring container M, the atmosphere passed through a filter 25 is conducted through the storage tank 11, the measuring tank 13 is provided with piping having an air release valve 22, and the agitating tank 16 has a dispenser 23 for automatically supplying the additive 2.

Description

The present invention relates to a liquid mixing apparatus for preparing a liquid mixture by adding an additive to a main agent obtained by dissolving a resin composition in a solvent.
More specifically, the present invention provides a liquid mixing apparatus that can reduce the amount of waste even if the liquid mixture is a paint having a short pot life (pot life). Examples of additives that can be used in the present specification include crosslinking agents, curing agents, catalysts, dyes or pigment colorants, softeners, polymerization initiators, thickeners, sensitizers, resins, dispersants, and surfactants. , Antifoaming agent, antistatic agent, ultraviolet absorber, near infrared absorber, dye, adhesion promoter, polymerization inhibitor, plasticizer, antioxidant, surface modifier, heat stabilizer, light stabilizer, lubricant, There may be mentioned at least one selected from the group consisting of an antiblocking agent, a flame retardant, resin fine particles, metal fine particles, and inorganic fine particles. In this specification, the paint is a raw material for producing a laminate including a coating film by applying and drying to a substrate, such as a pressure-sensitive adhesive, an adhesive, or a surface treatment agent. It refers to a liquid raw material mixture in which additives such as a cross-linking agent, a curing agent, and a catalyst are added to and mixed with a main agent composed of various dissolved resin compositions.

The liquid mixing method that has been generally used in the past is that the main agent, curing agent, and solvent stored in a large storage tank are respectively measured with a flow meter and added to the large mixed liquid storage tank while stirring. This is a method for preparing a mixture (see, for example, Patent Document 1).
However, in the preparation method using a large mixed liquid storage tank as described in Patent Document 1, for example, a crosslinking agent, a curing agent, a catalyst, or the like is added to a main agent composed of an olefin resin composition dissolved in a solvent. When preparing the raw material of the thermosetting resin composition by adding an agent, if the pot life (pot life) of the prepared liquid mixture is a short product, use a large mixed liquid storage tank In the preparation, the raw material of the thermosetting resin composition that is discarded without being used increases, which causes an increase in cost.

In addition, Patent Document 2 discloses a method for reducing wasteful disposal of a chemical stored in a supply tank that has been adjusted at a predetermined ratio, by measuring the mixing ratio of the supply tank and adjusting the supply in the supply tank. It is disclosed that if the chemical solution is usable, it is used without being discarded.
However, the method of Patent Document 2 can be used when a specific type of chemical solution is used to prepare a mixed chemical solution having only a specific mixing ratio, but various mixing ratios can be shortened using various chemical solutions. In the case of preparing while switching over time, there is a problem that the chemical solution to be discarded cannot be reduced.

Patent Document 3 discloses a method of directly mixing and preparing a liquid raw material and feeding it to a coating machine while transferring the liquid raw material according to the usage amount of the mixed liquid material without using a mixed liquid storage tank of the product raw material. It is disclosed.
The liquid mixing method described in Patent Document 3 directly controls the rotational speeds of the main agent supply pump motor and the cross-linking agent supply pump motor while monitoring and measuring the liquid level of the liquid reservoir of the coating machine. Is a liquid mixing method by so-called flow rate ratio setting, but it is said that the pot life restriction and the waste of raw materials can be omitted. However, if the ratio of the flow rate of the additive to the flow rate of the main agent is too small, 1/100 to 1 / 1,000,000, and there is no flow meter that can measure the flow rate of the additive, Liquid mixing method with ratio setting cannot be adopted.

Further, Patent Document 4 automatically and quantitatively fills drinking water, commercially available bottles and bags, etc., using a portion divided by two gate valves provided in the middle of the liquid supply pipe as a measuring pipe. A liquid metering apparatus for doing so is disclosed.
The liquid fixed quantity supply apparatus described in Patent Document 4 can adjust the liquid supply amount by a simple method using the internal volume of the pipe instead of the flow meter, but stores the raw material liquid storage tank by evacuating it. The pressure in the tank is set to atmospheric pressure or lower, and the air accumulated in the measuring tube is exhausted into the raw material liquid storage tank. For this reason, there exists a problem that the water | moisture content, dust, etc. which are the components in air | atmosphere are easily mixed in the storage tank.

Japanese Patent Laid-Open No. 11-151460 JP 2001-340743 A JP-A-6-240211 JP-A-9-236183

  The present invention has been made in view of the above circumstances, and even when the liquid mixture is a paint having a short pot life (pot life), the amount of waste can be reduced, and the amount of additive added is significantly less than that of the main agent. However, it is an object of the present invention to provide a liquid mixing device that can be accurately blended and that can be quickly transferred to and from the measuring basket without contaminating the main agent with the outside air.

  In order to solve the above-described problems, the present invention provides a liquid mixing apparatus for preparing a liquid mixture by adding an additive to a main agent obtained by dissolving a resin composition in a solvent, the liquid mixing device being housed in a storage tank. The main agent passes through the first automatic valve, the metering tank, the second automatic valve, the agitation tank equipped with the agitation device, the third automatic valve, and a pipe that sequentially connects the static mixer to the supply tank. A space volume in the pipe that is transferred by the dead weight of the main agent and separated from the first automatic valve including the inside of the measuring tank by the second automatic valve functions as a measuring tank, and the storage tank The atmosphere through the filter is conducted, the metering tank is provided with a pipe provided with an air vent valve, and the stirring tank is provided with a dispenser for automatically supplying the additive. Liquid Providing mixing apparatus.

  In addition, the additive includes a crosslinking agent, a curing agent, a catalyst, a dye or pigment colorant, a softener, a polymerization initiator, a thickener, a sensitizer, a resin, a dispersant, a surfactant, an antifoaming agent, Antistatic agent, UV absorber, near infrared absorber, dye, adhesion promoter, polymerization inhibitor, plasticizer, antioxidant, surface modifier, heat stabilizer, light stabilizer, lubricant, antiblocking agent, difficulty At least one selected from the group consisting of a flame retardant, resin fine particles, metal fine particles, and inorganic fine particles can be used.

The present invention also includes a step of supplying the main agent to the measuring tank, a step of supplying and stirring the additive from the dispenser to the main agent in the stirring tank while transferring the main agent of the measuring pot to the stirring tank, It is also possible to provide a function of automatically operating the liquid mixture obtained by mixing the main agent and the additive in order to automatically transfer the liquid mixture to the supply tank through the static mixer.
Further, according to the present invention, the ratio of the volume B of the at least one additive added to the volume A of the main agent stored in the measuring basket is B / A = 1/100 to 1/1000, It can also be in the range of 000.
Examples of the main agent include a pressure-sensitive adhesive composition, an adhesive composition, and a synthetic resin composition.

  According to the present invention, even if the liquid mixture is a paint having a short pot life (pot life), the amount of waste can be reduced, and accurate blending is possible even if the blending amount of the additive is significantly smaller than that of the main agent. In addition, it is possible to provide a liquid mixing apparatus capable of quickly transferring to and from the measuring tub without contaminating the main agent with outside air.

It is a front view which shows an example of the liquid mixing apparatus of this invention. It is a front view which shows the process of supplying a main ingredient to a measuring bowl. It is a front view which shows the process of transferring the main ingredient of a measuring rod to a stirring tank. It is a front view which shows the process of stirring the main ingredient containing an additive with a stirring apparatus. It is a front view which shows the state which prepared the liquid mixture in the stirring tank. It is a front view which shows the process of transferring the prepared liquid mixture to a supply tank.

The present invention will be described below based on preferred embodiments with reference to the drawings.
A liquid mixing apparatus 10 shown in FIG. 1 is a stirring tank having a main agent 1 stored in a storage tank 11, a first automatic valve 12, a metering tank 13, a second automatic valve 14, and a stirring device 15. 16, a third automatic valve 17, and a pipe 19 that sequentially connects a static mixer, can be transferred to the supply tank 20 by its own weight, and can be transferred from the first automatic valve 12 including the inside of the measuring tank 13 to the second automatic valve 12. The space volume in the pipe 19 partitioned by the automatic valve 14 functions as a measuring rod M, the atmosphere through the filter 25 is conducted to the storage tank 11, and the measuring tank 13 is provided with an air vent valve 22. The stirring tank 16 includes a dispenser 23 for automatically supplying the additive 2.
The agitation tank 16 is hermetically sealed with an upper lid, and it is necessary to introduce the atmosphere and exhaust the air in the agitation tank 16 as the liquid level rises and lowers due to the supply of the main agent 1, but prevents dust from entering. A filter (not shown) is provided so that it can be used. In addition, although not shown, a gas such as air or nitrogen gas connected to the stirring tank 16 while measuring the pressure in the stirring tank 16 with a pressure sensor so that the pressure in the stirring tank 16 is maintained at a constant value. The pressure in the agitation tank 16 may be controlled by opening and closing automatic valves arranged in the supply pipe and the gas exhaust pipe.

The storage tank 11 is attached to the upper part of the machine base 30, and a pipe 19 is connected to the lower part of the storage tank 11. By preliminarily arranging the main agent 1 at a high place and applying potential energy, the main agent 1 can be sequentially transferred along the pipe 19 by its own weight.
The piping 19 in the illustrated example includes a piping 19 a that connects the storage tank 11 and the first automatic valve 12, a piping 19 b that connects the first automatic valve 12 and the measuring tank 13, and the measuring tank 13 and the second automatic valve. 14, a pipe 19 d connecting the second automatic valve 14 and the agitation tank 16, a pipe 19 e connecting the agitation tank 16 and the third automatic valve 17, a third automatic valve 17 and a static It has the piping 19f which connects the piping exit 18 provided with a mixer. The pipe 19 in the present invention is not limited to the case where the pipes 19a, 19b, 19c, 19d, 19e, and 19f are connected to each other, and may be appropriately omitted. For example, the outlet side of the storage tank 11 and the inlet side of the first automatic valve 12, the outlet side of the first automatic valve 12 and the inlet side of the metering tank 13, the outlet side of the metering tank 13 and the second automatic valve 14 A configuration in which the inlet side is directly connected is possible. When replacing the measuring tank 13 with a different size in order to change the capacity of the measuring rod M, it is possible to replace the intermediate connecting pipes 19a, 19b, 19c with different lengths and adjust the mounting position.

The storage tank 11 is provided with a filter 25 for introducing outside air into a space between the liquid level of the main agent 1 and the upper lid 27 of the storage tank 11. Thereby, when transferring the main agent 1 to the pipe 19, it is possible to suppress the generation of negative pressure inside the storage tank 11, and to smoothly transfer by the own weight of the main agent 1 without using a pump or the like. It becomes possible.
A measuring tank 13 is disposed below the storage tank 11 via a first automatic valve 12. Thereby, when the first automatic valve 12 is opened, as shown in FIG. 2, a part of the main agent 1 in the storage tank 11 can be transferred to the measuring tank 13 from the storage tank 11 through the pipes 19a and 19b. it can. A second automatic valve 14 is provided below the measuring tank 13. When the main agent 1 is transferred to the measuring tank 13 by its own weight, the second automatic valve 14 is closed. The air remaining in the measuring rod M before the transfer of the main agent 1 may be raised to the storage tank 11 through the pipes 19a and 19b, opposite to the main agent 1. As a result, even if the main agent 1 is a high-viscosity and dense liquid with low antifoaming properties, it is easy to discharge the portion containing air bubbles to the storage tank 11, so that the residual air bubbles in the measuring tub M can be suppressed. There is no risk of a decrease in accuracy.

  As shown in FIG. 2, after the first automatic valve 12 is opened and the second automatic valve 14 is closed, the metering tank 13 and the pipes 19a, 19b, and 19c before and after it are filled with the main agent 1 The first automatic valve 12 is closed. As a result, the space volume in the pipe 19 divided by the second automatic valve 14 from the first automatic valve 12 including the inside of the measuring tank 13 functions as the measuring rod M, and is constant according to the volume of the measuring rod M. The volume of the main agent 1 can be accurately and quickly measured.

  When the second automatic valve 14 is opened while the first automatic valve 12 is closed after the measurement by the measuring rod M, as shown in FIG. 3, the main agent 1 in the measuring rod M is put into the stirring tank 16 by its own weight. Be transported. Since the pipe 19b provided with the air vent valve 22 is disposed at the upper part of the metering tank 13, the outside air is introduced into the metering tank 13 through the air vent valve 22, and when the main agent 1 is transferred to the stirring tank 16, the metering is performed. The generation of negative pressure in the tank 13 can be suppressed, and the main agent 1 can be smoothly transferred by its own weight without requiring a pump or the like. It is preferable that the timing of opening the air vent valve 22 is substantially the same as the opening of the second automatic valve 14.

The stirring tank 16 is a container having an upper opening in the illustrated example, but it is also possible to provide a lid on the upper part or employ a sealed container. The pipes 19 c and 19 d are gently inclined from the lower part of the measuring tank 13 to the upper part of the stirring tank 16 so that the main agent 1 can be transferred by its own weight toward the stirring tank 16. The outlet of the pipe 19d is bent in an elbow shape and protrudes downward.
The stirring tank 16 includes a dispenser 23 for automatically supplying the additive 2. As shown in the figure, the additive 2 is stored in an additive tank 24 disposed at the upper part of the machine base 30. Further, by providing a measuring means such as a load cell 26 for measuring a change in the weight of the additive tank 24, the amount of additive 2 added can be automatically controlled.
The liquid mixing apparatus 10 includes at least one set including a dispenser 23 and an additive tank 24. When at least one set is provided for each type of additive 2, it is preferable because the amount of each additive 2 can be easily measured.
When a plurality of types of additives are added to the main agent, at least one set of dispenser and additive tank can be provided for each additive. Further, when one or more kinds of additives are selected and added at the time of operation, at least one set of dispenser 23 and additive tank 24 can be provided for each additive as an option. For example, when one type of additive is added to the main agent, a plurality of types of additives are prepared in advance, and when the additive is added to the main agent, the additive to be used is selected from the plurality of types of prepared additives. An agent can also be selected. In addition, when adding one kind of additive with respect to the main ingredient, the dispenser 23 and the additive tank 24 may be one set.
Measuring means such as a load cell 26 for measuring the weight change of the additive tank 24 is preferably provided for each additive tank 24.

The timing of starting the stirring of the main agent 1 and the timing of starting the addition of the additive 2 may be after the entire amount of the main agent 1 is transferred from the measuring bowl M to the stirring tank 16, but in the case of a resin composition such as a paint, The viscosity of the main agent 1 is high, and it often takes time to uniformly mix the main agent 1 and the additive 2. For this reason, it is preferable to gradually add the additive 2 while transferring the main agent 1 to the stirring tank 16. Further, the stirring of the main agent may be started when the amount of the main agent in the stirring tank 16 becomes possible to be stirred by the stirring device 15. The timing of finishing the addition of the additive 2 may be after the entire amount of the main agent 1 is transferred from the measuring rod M to the stirring tank 16, before being transferred, or at the same time.
It is preferable to close the second automatic valve 14 and the air vent valve 22 after the entire amount of the main agent 1 is transferred from the measuring rod M to the stirring tank 16.

  As shown in FIG. 4, the main agent 1 to which the additive 2 has been added is stirred by the stirring device 15 for a predetermined time while stirring using the stirring device 15 of the stirring tank 16. When the stirring time until the liquid mixture 3 is obtained by mixing the main agent 1 and the additive 2 is long, the second automatic valve 14 is closed and then the first automatic valve 12 is opened as shown in FIG. By doing so, the step of supplying the main agent 1 to be used in the next batch from the storage tank 11 to the measuring tank during the stirring by the stirring device 15 can also be performed. Thereby, when performing batch processing of multiple times continuously, the processing time after the 2nd time can be shortened.

After predetermined stirring is completed in the stirring tank 16, the liquid mixture 3 obtained in the stirring tank 16 is transferred from the piping outlet 18 to the supply tank 20, as shown in FIG. The bottom of the stirring tank 16 and the pipes 19e and 19f are gently inclined so that the liquid mixture 3 can be transferred by its own weight through the pipe outlet 18 toward the supply tank 20.
When the supply tank 20 is sealed with the upper lid 21, it is necessary to introduce air and discharge air in the supply tank 20 along with the upper and lower surfaces of the liquid mixture 3, but dust can be prevented from entering. It is preferable to arrange a filter (not shown). Moreover, it is preferable that the piping outlet 18 is provided with a static mixer, and thereby the liquid mixture 3 can be supplied to the supply tank 20 while further mixing and homogenizing. As a static mixer, a large number of elements are arranged in the pipe line along the flow direction, and the fluid can collide with each element and can give actions such as division, conversion, inversion and mixing. Is mentioned. In the present embodiment, the main agent 1 and the additive 2 are not separately introduced into the static mixer, but the stirred liquid mixture 3 is introduced into the static mixer. A static mixer having a plurality of inlets can also be used. In this case, the liquid mixture 3 is introduced into any of the inlets.

As valves used between the storage tank 11, the metering tank 13, the stirring tank 16, and the supply tank 20, automatic valves 12, 14, and 17 that can be automatically controlled to open and close are used. This eliminates the need for the operator to open and close the valve and adjust the timing, thereby improving workability. For example, after the operator operates a start switch that instructs the liquid mixing device 10 to start preparing the liquid mixture 3, the automatic valves 12, 14, and 17 are automatically opened and closed, and the operations of the air vent valve 22 and the stirring device 15 are automatically performed. It is preferable to be able to control with.
According to the automatic valves 12, 14, and 17 that can be automatically controlled, the elapsed time from the start by the operation of the start switch is measured by a timer, and the necessary valves can be automatically opened and closed as the predetermined time elapses. . The mechanism for opening and closing the flow path of the valve includes a plug valve, a ball valve, a butterfly valve, a diaphragm valve, and the like, and is not particularly limited. Depending on the properties of the fluid (main agent 1 and liquid mixture 3) that passes through the valve, it is preferable to select a fluid that does not easily adhere to components in the fluid or that can be easily cleaned. The operation of the valve is controlled based on an external signal generated by a control unit such as an electric signal, and an auxiliary power source such as electric power can be used. As the control unit, for example, a microcomputer can be used. As each automatic valve, for example, an electromagnetic valve can be used.

The present invention also includes a step of supplying the main agent 1 to the measuring basket M, and supplying the additive 2 from the dispenser 23 to the main agent 1 in the stirring tank 16 while transferring the main agent 1 of the measuring basket M to the stirring tank 16. The step of stirring and the step of automatically transferring the liquid mixture 3 in the stirring tank 16 to the supply tank 20 through the static mixer in order can be provided.
The main agent 1 is transferred from the storage tank 11 to the metering tank 13 (first transfer step) by detecting that the second automatic valve 14 is closed, and then opening the first automatic valve 12. The first automatic valve 12 can be controlled to automatically close after detecting the end of the first transfer process. The end of the first transfer step can be determined based on, for example, that a certain time required for the completion of the first transfer step has elapsed since the opening of the first automatic valve 12. Since the time required for the first transfer step depends on the viscosity of the main agent 1 and the flow rate of the first automatic valve 12, it is preferable to set the time beforehand with a margin.
In addition, the main agent 1 is transferred from the measuring tank 13 to the stirring tank 16 (second transfer step) after the second automatic valve 14 and the air vent valve 22 are automatically detected after detecting that the stirring tank 16 is not in use. The liquid mixture 3 can be automatically controlled by being opened, and the transfer of the liquid mixture 3 from the stirring tank 16 to the supply tank 20 (third transfer step) is performed after detecting that the liquid mixture 3 is sufficiently mixed. The automatic valve 17 can be automatically controlled by automatically opening it.
Whether or not the liquid mixture 3 has been sufficiently mixed can be determined by whether or not the time necessary for the second transfer step and the time set as the stirring time in the stirring tank 16 have elapsed. Since the time required for the second transfer step depends on the viscosity of the main agent 1 and the flow rate of the second automatic valve 14, it is preferable to set the time in advance with a margin. Furthermore, when it is necessary to continue stirring for a predetermined time after the main agent 1 corresponding to the capacity of the measuring rod M is transferred to the stirring tank 16, this is added as the stirring time in the stirring tank 16. As shown in FIG. 3, when the second transfer step is performed first, it is not necessary to determine whether or not the stirring tank 16 is in use, and immediately after the completion of the first transfer step, The second transfer process can be started.
The timing for supplying the additive 2 from the dispenser 23 and the timing for starting the stirring by the stirring device 15 can be automatically controlled by setting an appropriate time difference based on the start or completion of the second transfer step. It becomes possible. When a plurality of types of additives 2 are added to the main agent 1 or when at least one type of the additives 2 is added in a plurality of times, different time differences may be set.

From the second time on, the first transfer process for the next time is started after the second transfer process for the previous time is completed, and the second transfer for the next time after the third transfer process for the previous time is completed. It is necessary to start the process. Therefore, as shown in FIG. 5, when the first transfer process is performed after the second time, all of the main agent 1 weighed in the last measuring rod M is transferred to the stirring tank 16 by opening the second automatic valve 14. It is determined whether or not (i.e., whether or not the previous second transfer step has been completed). This determination can be preset in the time required to complete the second transfer step after opening the second automatic valve 14 and the air vent valve 22 as described above.
In addition, as shown in FIG. 6, when the second transfer process is performed after the second time, is the liquid mixture 3 obtained last time all transferred to the supply tank 20 by opening the third automatic valve 17? Whether or not the stirring tank 16 is in use is determined based on whether or not (that is, whether or not the previous third transfer step has been completed). This determination can be set in advance by the time required to complete the third transfer step after the third automatic valve 17 is opened. Since the time required for the third transfer step depends on the viscosity of the liquid mixture 3 and the flow rate of the third automatic valve 17, it is preferable to set with a margin in advance.

As described above, the liquid mixture 3 prepared from the main agent 1 in the same amount as the measuring rod M is obtained every time one cycle of the main agent measurement step, the additive addition and stirring step, and the supply step to the supply tank. It can be supplied to the supply tank 20. The supply tank 20 is provided with a liquid level gauge for measuring the storage amount of the liquid mixture 3, and the main agent metering step, the additive addition and stirring step, and the supply step to the supply tank are repeated over a plurality of cycles until the required amount is reached. be able to.
It is preferable that the supply tank 20 can be moved separately from the machine base 30 because the adjusted liquid mixture 3 can be easily conveyed.

The liquid mixture prepared according to the present invention includes a main agent 1 obtained by dissolving a resin composition in a solvent, a crosslinking agent, a curing agent, a catalyst, a dye or pigment colorant, a softening agent, a polymerization initiator, a thickener, Sensitizers, resins, dispersants, surfactants, antifoaming agents, antistatic agents, ultraviolet absorbers, near infrared absorbers, dyes, adhesion promoters, polymerization inhibitors, plasticizers, antioxidants, surface modification Added with at least one additive 2 selected from the group consisting of additives, heat stabilizers, light stabilizers, lubricants, anti-blocking agents, flame retardants, resin fine particles, metal fine particles, and inorganic fine particles Is preferred. Moreover, since the present invention can quickly measure the main agent 1 having a larger capacity than the addition amount of the additive 2, at least one kind of additive added to the volume A of the main agent 1 stored in the measuring rod M. The ratio of the volume B of the additive 2 is in the range of B / A = 1/100 to 1 / 1000,000 (that is, the value of B / A is in the range of 10 ⁻⁶ ≦ B / A ≦ 10 ⁻² ) Is also applicable. By adopting a measuring means such as a load cell 26 that measures a change in the weight of the additive tank 24, high-precision measurement is facilitated even if the additive 2 is added in a small amount. The volume B of the additive at the ratio B / A may be defined as the volume of the additive added at one time with respect to the main agent, or may be defined as the maximum amount of the volume for each type of additive. Well, it may be defined as the total volume of at least one additive, but in any case the B / A is significantly less than 1/100 to 1 / 1,000,000 compared to the prior art. It is also applicable to a range. The volume of the measuring bowl M, that is, the volume A of the main agent 1 that can be supplied at one time is not particularly limited, and examples thereof include 1 to 100 liters.

Since the capacity of the measuring bowl can be a relatively small amount of several liters and the time loss in the preparation of the liquid mixture can be suppressed, even if the liquid mixture is a paint with a short pot life (pot life) The amount of waste can be reduced. As a paint, it is a raw material for producing a laminate including a coating film by applying and drying to a base material, such as a pressure-sensitive adhesive, an adhesive, or a surface treatment agent, from various resin compositions dissolved in a solvent. The liquid raw material mixture which added and mixed additives, such as a crosslinking agent, a hardening | curing agent, and a catalyst, with respect to the main ingredient to be mentioned. As the solvent, a volatile organic solvent, a nonvolatile organic solvent, an aqueous solvent, a mixed solvent thereof or the like can be used. When a volatile organic solvent is used, it is preferable to suppress volatilization from the apparatus by sealing or cooling.
The synthetic resin composition is not limited as long as it is a fluid liquid composition, such as acrylic, urethane, epoxy, olefin, silicone, vinyl, fluorine, polyether, etc. Is mentioned. The additive is not limited to a liquid, and may be a powder or the like as long as it can form a homogeneous liquid composition by dissolution, dispersion, chemical reaction or the like in the main agent.

DESCRIPTION OF SYMBOLS M ... Metering bowl, 1 ... Main agent, 2 ... Additive, 3 ... Liquid mixture, 10 ... Liquid mixing apparatus, 11 ... Storage tank, 12 ... 1st automatic valve, 13 ... Measuring tank, 14 ... 2nd automatic valve 15 ... Stirring device, 16 ... Stirring tank, 17 ... Third automatic valve, 18 ... Pipe outlet with static mixer, 19 ... Pipe, 20 ... Supply tank, 21, 27 ... Upper lid, 22 ... Air vent valve, 23 ... Dispenser, 25 ... filter, 26 ... load cell.

Claims (7)

A liquid mixing apparatus for preparing a liquid mixture by adding an additive to a main agent obtained by dissolving a resin composition in a solvent,
The main agent accommodated in the storage tank is connected in order to a first automatic valve, a metering tank, a second automatic valve, a stirring tank equipped with a stirring device, a third automatic valve, and a static mixer. Via piping, it is transferred to the supply tank by its own weight,
A space volume in the pipe divided by the second automatic valve from the first automatic valve including the inside of the measuring tank functions as a measuring tank, and the atmosphere through the filter is conducted to the storage tank. The liquid mixing apparatus is characterized in that the metering tank is provided with a pipe having an air vent valve, and the stirring tank is provided with a dispenser for automatically supplying the additive.   The additives include cross-linking agents, curing agents, catalysts, dyes or pigment colorants, softeners, polymerization initiators, thickeners, sensitizers, resins, dispersants, surfactants, antifoaming agents, and antistatic agents. Agent, ultraviolet absorber, near infrared absorber, dye, adhesion promoter, polymerization inhibitor, plasticizer, antioxidant, surface modifier, heat stabilizer, light stabilizer, lubricant, anti-blocking agent, flame retardant, 2. The liquid mixing apparatus according to claim 1, wherein the liquid mixing apparatus is at least one selected from the group consisting of resin fine particles, metal fine particles, and inorganic fine particles.   A step of supplying the main agent to the measuring tank; a step of supplying the main agent in the stirring tank to the main agent in the stirring tank while supplying the additive from the dispenser and stirring; a main agent and the additive in the stirring tank; The liquid mixing apparatus according to claim 1, further comprising a function of automatically operating in order the steps of transferring the liquid mixture obtained by the mixing to a supply tank through a static mixer.   The ratio of the volume B of the at least one additive added to the volume A of the main agent stored in the measuring basket is in the range of B / A = 1/100 to 1 / 1000,000. The liquid mixing apparatus according to any one of claims 1 to 3.   The liquid mixing apparatus according to claim 1, wherein the main agent is an adhesive composition.   The liquid mixing apparatus according to claim 1, wherein the main agent is an adhesive composition.   The liquid mixing apparatus according to claim 1, wherein the main agent is a synthetic resin composition.

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