JPH0716442A - Method and device for dissolving high polymer material - Google Patents

Abstract

PURPOSE:To dissolve a solid high polymer material in a short time and to easily produce a high posymer dissolved liq. by introducing the solute of the solid high polymer material and a solvent into a dissolving tank and agitating them by a rotary agitating blade while cutting them by the rotary cutter installed in the dissolving tank. CONSTITUTION:The solute of the solid high polymer material is introduced from a solute feeding port 2 at upper part of the dissolving tank 1, and the solvent is poured from a solvent feeding port 3 similarly. Then, the solute is cut by the rotary cutter 4-6 installed in the dissolving tank 1, and the solute and the solvent are agitated by the rotary agitating blades 7-9 installed in the dissolving tank 1. After dissolution is completed, the discharge valve 10 at the bottom part of the dissolving tank 1 is opened to discharge the dissolved liq.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polymer material melting method and apparatus for rapidly dissolving a solid polymer material.

[0002]

2. Description of the Related Art Conventionally, for example, a polymer solution of a rubber-based adhesive is cut in a cutting step to cut a solute such as a sheet of rubber into a substantially rectangular shape having an appropriate size, for example, 100 to 150 mm × 50 mm, After that, in the melting step, the cut solute and the organic solvent are put into a melting tank equipped with a stirrer to dissolve them.

Further, adhesive manufacturers also carry out pre-processes such as roll smelting and cutting of rubber raw materials.

Also, when a paint or varnish is manufactured using a synthetic resin, for example, the size of the synthetic resin is adjusted by cutting or the like by the manufacturer of the synthetic resin, and the dissolution process is performed by the manufacturer of the paint or varnish. Has been done.

This cutting device uses a special cutting tool for cutting elastic solutes and synthetic resins such as rubber, and the stirring device used in the melting step is used in the melting tank. A stirring device including a rotary stirring blade that is rotatably mounted on the shaft and a drive device that rotates the blade is used.

[0006]

As described above, when the rubber material cutting maker performs the cutting step of the rubber material, the manufacturing cost of the cutting step and the transportation cost are added, and therefore the adhesive is supplied to the adhesive maker. The cost of the solute to be cut is high, and the cut solute is bulky as compared with the solute before cutting, which is also disadvantageous in reducing the transportation cost.

These points are the same in the case of producing a paint or varnish using a synthetic resin.

In order to solve such a problem, in order for an adhesive maker, a paint maker, and a varnish maker to perform a cutting process, it is necessary to install a new cutting device, and in particular, elasticity of rubber or the like is required. Polymer material (solute)
Since it is necessary to cut, and it is necessary to use a special technique and a cutting tool, there is a possibility that the cost may be increased.

Further, the process time of the above-mentioned dissolution process (hereinafter referred to as the dissolution time) becomes shorter as the solute cutting size becomes finer and becomes longer as it becomes larger. For example, when a dissolution tank of 1 kiloliter is fully operated. It takes about 8 to 10 hours.

This dissolution process cannot be interrupted in order to homogenize the product and is continuously performed, and the mixture of solute and solvent is ignited by the heat generated by stirring, or the solvent is ignited. In order to prevent the risk of ignition of solvent vapor leaked from the tank, it is necessary to monitor the dissolution state and the state of the dissolution tank.

Therefore, the melting process, which requires continuous monitoring for about 8 to 10 hours, cannot be completed without overtime due to today's labor situation, resulting in high labor cost and cost reduction. Will be at a disadvantage.

The present invention has been made in view of the above technical problems, and a polymer capable of simplifying the process for producing a polymer solution and dissolving a solid polymer material containing a semi-solid within a short time. An object of the present invention is to provide a material melting method and an apparatus thereof.

[0013]

[Means for Solving the Problems]

[Method for Dissolving Polymer Material of the Present Invention] The method for dissolving a polymer material according to the present invention (hereinafter referred to as the method of the present invention) comprises a solid polymer material in a dissolution tank in order to achieve the above object. After charging the solute and the solvent, while cutting the solute with the rotary cutter provided in the dissolution tank, the solute and solvent with the rotary stirring blade provided in the dissolution tank (hereinafter, the solute and solvent in the dissolution tank It is characterized by stirring.

In order for the method of the present invention to be understood more clearly, the method of the present invention will be described in more detail below.
The solid polymer material used in the method of the present invention is a solid polymer material containing a semi-solid, and may be any solid polymer material that is soluble in any solvent. The solvent used in the present invention may be any solvent that can dissolve the solid polymer material.

That is, it is possible to freely select a combination of a solid polymer material suitable for a solution of a polymer material to be obtained by dissolution and a solvent compatible with the solution, and to obtain a solution of the polymer material solution. The application is not limited to the fields of adhesives, paints and varnishes, but is also applicable to all fields in which polymer materials are dissolved and used, such as modification and molding of polymer materials.

Examples of the polymer material include natural rubber, synthetic rubber, and synthetic resin.

As the synthetic rubber, styrene butadiene rubber, acrylonitrile butadiene rubber, butadiene rubber, isoprene rubber, chloroprene rubber, chlorosulfonated polyethylene, ethylene propylene rubber, butyl rubber, silicone rubber, polysulfide rubber, fluorine rubber, urethane rubber, Examples thereof include acrylic rubber, polyisobutylene, isoprene, chlorinated rubber, and hydrochloric acid rubber, and these can be used alone or in admixture of two or more.

The synthetic resin may be either a thermoplastic resin or a thermosetting resin. Specifically, for example, polyethylene, polypropylene, polyvinyl chloride,
Polyvinylidene chloride, vinyl chloride-vinylidene chloride resin, polyester, polycarbonate, aromatic or aliphatic polyamide, polysulfone, polyacrylonitrile, polyimide, polyurethane, polystyrene, polyphenylene oxide, polyphenylene sulfide, polyamide imide, bismaleimide triazine, epoxy Resin, polyamino bismaleimide, polyacetal,
Examples thereof include transparent films formed of synthetic resins such as polyether ether ketone and polyether sulfone, and these may be used alone or in combination of two or more.

The solvent used in the present invention is not particularly limited as long as it dissolves the above-mentioned polymer material, and specifically, for example, alcohols such as methanol and ethanol, acetone. And ketones such as methyl ethyl ketone, ethers such as ethyl ether, esters such as ethyl acetate, chlorine-containing solvents such as methylene chloride and trichlene, polar solvents such as tetrahydrofuran, N-methylpyrrolidone and furfural, benzene and toluene, and xylene. Other aromatic solvents such as hexane, octane, cyclopentane, etc.,
Depending on the case, naphtha and kerosene are also used.

Regardless of before and after the time of introducing the solute composed of a solid polymer material containing semi-solid into the dissolution tank and the time of injecting the solvent into the dissolution tank, after the predetermined amount of solute is introduced into the dissolution tank. A fixed amount of solvent may be injected into the dissolution tank, and generally, a solid amount of the base material such as rubber is added after injecting a predetermined amount of solvent, but in the case of synthetic resin, it is granular and a small amount. ,
The synthetic resin may be charged first, and a predetermined amount of solute may be simultaneously charged into the dissolution tank while injecting a predetermined amount of solvent into the dissolution tank.

Among these methods, a method of introducing a predetermined amount of solute into the dissolution tank, sealing the inlet, and then injecting a predetermined amount of solvent into the dissolution tank is an error in component control due to volatilization of the solvent. Is preferable because it can be prevented.

The cutting of the solute and the stirring of the solution in the dissolution tank can be carried out separately in stages. That is, in the present invention, the flow of the fluid is used, the solid content is entrained in the flow of the strong solvent, and finely cut when passing through the cutter portion, so that the flow is continuously performed. A device-specific amount of solvent is required.

However, it is recommended to perform solute cutting and dissolution liquid stirring simultaneously in parallel for the following reasons. That is, when cutting the solute and stirring the solution at the same time in parallel, the solute can be efficiently and continuously guided to the rotary cutter by being placed on the flow of the solution generated by the stirring. This is because the solute can be cut well and the cutting speed of the solute gradually increases as the solute is fragmented.

Here, although it is not essential to regulate the flow of the solution stirred in the dissolution tank, it is not essential to guide the flow of the solution stirred in the dissolution tank by the guide member. The solute is put on the flow of the solution, and it is stable, and
It is advantageous to reliably lead to the rotary cutter.

The flow of the dissolution liquid guided by the guide member does not need to be uniform in the circumferential direction of the dissolution tank, but in order to shorten the time required for dissolution and to homogenize the product, the guide member is used. It is preferable to guide the solute and solvent flows evenly in the circumferential direction to make the progress of the dissolution uniform.

The flow of the solution generated by the rotary stirring blade does not have to be restricted in particular. For example, by disposing the rotary stirring blade inside the cylindrical guide member, the solute and the solvent generated by the rotary stirring blade are generated. The width of the flow is restricted to promote the axial flow, thereby forming a strong flow of the dissolved solution, which enhances the stirring efficiency and facilitates the solute to ride on the flow of the dissolved solution and circulate in the dissolution tank. Therefore, it is preferable.

Further, the solute may be cut anywhere in the solution, but the solute may be cut at a location where the flow of the solution is concentrated, for example, in the hollow portion of the tubular guide member.
It is preferable because the solute can be cut efficiently.

In addition, in the method of the present invention, heat is generated due to cutting of the solute and stirring of the solution, so depending on the processing amount and the processing speed, this heat generation causes the reaction between the solute and the solvent, or the solution is When the resin is deteriorated or the resin component is polycondensed by heat, the resin may have a high molecular weight, the viscosity of the solution may be increased, and the processing speed may be slowed.

However, the adhesive or the like is generally a thixotropic fluid, and the viscosity decreases as the temperature rises,
It is preferable because the required power is small and it is easy to dissolve, but the organic solvent is almost a dangerous substance, and it is dangerous because the organic solvent is likely to evaporate due to the temperature rise of the organic solvent. Since the change in the concentration and the cost of the product are adversely affected, it is desirable to keep the temperature rise moderately, for example, about 50 to 60 ° C.

Therefore, in the method of the present invention, it is preferable to cool the solution to prevent the reaction between the solute and the solvent, the deterioration of the solution, the increase in the viscosity of the solution, and the decrease in the processing rate due to the increase in the viscosity. .

Cooling of the dissolution liquid may be performed by circulating a refrigerant inside the dissolution tank and cooling it from the inside, or by circulating a solvent around the dissolution tank and cooling it around the dissolution tank. In addition, cooling from the inside of the melting tank and cooling from the surroundings may be used together, but among these, cooling from around the melting tank and cooling inside the melting tank are used together. Most preferably, the solution is cooled uniformly.

When cooling the dissolution liquid from the inside of the dissolution tank,
The refrigerant passage through which the refrigerant flows can be freely installed as long as it is within the space of the dissolution tank. For example, it can be arranged in the flow of the dissolution liquid to form a turbulent flow in the flow of the dissolution liquid. This turbulent flow can be positively used to enhance stirring efficiency.

A refrigerant passage is formed in a guide member provided in the melting tank, and the refrigerant is circulated in the refrigerant passage, so that the solute is circulated favorably and reliably guided to the rotary cutter, and the stirring resistance is also increased. Is preferably prevented.

The refrigerant for cooling the solution is not particularly limited as long as it is generally used as a refrigerant,
Although cooling gas such as cooling air can be used, it is recommended to use water, which is extremely safe and can be obtained easily and inexpensively, and has a large specific heat, in order to achieve cost reduction. It

The cooling method of the solution may be either a natural cooling method or a forced cooling method, but it is preferable to adopt the forced air cooling method or the forced liquid cooling method in order to surely cool the dissolving solution. .

[Device for Dissolving Polymer Material of the Present Invention] Device for dissolving polymer material according to the present invention (hereinafter referred to as the device of the present invention)
In order to carry out the method of the present invention, a dissolution tank having at least a solute inlet at the top and a discharge valve at the bottom, a rotary cutter and a rotary stirring blade arranged in the dissolution tank, and a rotary cutter are provided. It is characterized by comprising a cutter driving device for driving and a stirring driving device for driving a rotary stirring blade.

In this case, the solvent may be injected from the solute charging port, but the solvent can be pipe-transferred and is easy to handle, and therefore it is desirable to have a solute charging port and a solvent charging port in the upper part.

In order for the device of the present invention to be more clearly understood, the device of the present invention will be described more specifically below.
The dissolution tank may be a tank having an internal space having a required volume or more, but in consideration of the fact that a solvent having a volatile property is frequently used for the dissolution process, the dissolution tank may be configured with a sealable container. preferable.

Therefore, it is preferable to provide a lid or a shutter for sealing the solute feeding port, and to let the solvent feeding port communicate with the solvent supply source in an airtight manner or provide a shutoff valve. .

The material of the melting tank is not particularly limited,
It is preferable that the resin has insolubility in a solution or solvent, has required chemical corrosion resistance, and has mechanical properties such as pressure resistance to some extent and functional characteristics such as heat resistance.

Further, since some components of the solution may be charged with static electricity by stirring, it is preferable that the dissolution tank has excellent conductivity.

Therefore, examples of the material of the melting tank include a metal having a high chemical stability (inertness) such as stainless steel, a glass lining, a steel material coated with an insoluble resin or an insoluble rubber, and the like. From the perspective of
It is desirable to use a metal having high chemical stability (inertness) such as stainless steel.

Examples of the rotary cutter arranged in the melting tank include stainless steel and ceramics.

As will be described later, in the apparatus of the present invention, a constant flow is formed in the solution by the rotary stirring blades, and the solute flowing along with this flow is cut by the rotary cutter, but the solute is cut by the rotary cutter. In order to improve the efficiency of the solute, a guide member for guiding the flow of solute and solvent, for example, a cylindrical guide tube, should be provided in the dissolution tank to stabilize the flow of the dissolution liquid and guide the solute to the rotary cutter in a stable manner. Is preferred.

It is not necessary that the flow of the dissolution liquid stabilized by the guide member be evenly distributed in the dissolution tank, but the guide member is constituted by a cylindrical guide cylinder, and this guide cylinder is formed in the center of the dissolution tank. By arranging it in the section, a uniform flow of the dissolution liquid is formed in the circumferential direction in the dissolution tank, which makes the progress of the dissolution even, shortens the time required for the dissolution, and homogenizes the product. It is preferable.

Further, in this case, in order to improve the stirring efficiency, at least one stage of the rotary stirring blade is arranged in the hollow portion of the guide cylinder so that the flow in the width direction generated by the rotary stirring blade is arranged. It is preferable to regulate with a guide cylinder to promote axial flow, to form a strong flow of the dissolution liquid to enhance stirring efficiency, and to facilitate the solute to be guided to the rotary cutter along with the flow of the dissolution liquid. .

The installation position of the rotary cutter is not particularly limited as long as it is a position where the solute in the dissolution liquid can be cut, but in order to efficiently cut the solute, the rotation cutter is installed at a position where the flow of the dissolution liquid is concentrated. It is preferable.

Therefore, the guide cylinder is provided inside the dissolution tank, and at least one stage of rotary cutter is arranged in the hollow portion of the guide cylinder to cut the solute in the hollow portion of the guide cylinder where the flow of the dissolution liquid is concentrated. It is preferable to configure so that

Further, in this case, it is preferable that the rotary cutter is arranged coaxially with the guide tube so that the solute in the flow of the solution is evenly cut.

The number of rotary cutters may be one or more, but it is preferable to provide a plurality of rotary cutters in order to improve the cutting efficiency, and in particular, a plurality of rotary cutters are provided in multiple stages with respect to the flow of the solution. It is preferable that the flow of the solution passing through one rotary cutter is guided to the last rotary cutter so that the solute is progressively fragmented.

The number of rotary stirring blades may be one or more, but it is preferable to provide a plurality of rotary stirring blades in order to enhance stirring efficiency. On the other hand, it is preferable that the tanks are provided in multiple stages so that the dissolution liquid is successively stirred by the rotary stirring blades to progressively enhance the stirring efficiency.

The rotary cutter may be any one capable of cutting the solute by rotating the blade. The rotary cutter may be simply provided with a rotary blade to knock off the solute in the solution, but the cutting efficiency is improved. In order to increase, it is advantageous to provide a fixed blade fixed to the rotating surface of the rotating blade in the vicinity of the rotating surface thereof in addition to the rotating blade, and to shear the solute by the fixed blade and the rotating blade. is there.

In this case, the rotary blade and the fixed blade may be tilted in the direction opposite to the tilt of the rotary stirring blade or upright in the rotary cutter, but the rotary blade and the fixed blade of the rotary cutter are the same as the rotary stirring blade. It is preferable to incline the solution to promote the flow of the solution and enhance the stirring efficiency of the solution.

In the device of the present invention, the cutter driving device and the stirring driving device may be independent of each other. In this case, for example, the driving of the rotary cutter by the cutter driving device is driven by the stirring driving device. The cutting of the solute prior to the stirring of the dissolved liquid by alternately driving the rotary cutter by the cutter driving device and driving the rotary stirring blade by the stirring driving device, or cutting the solute and stirring the dissolved liquid. And can be repeated alternately.

However, in order to improve the cutting workability, the cutter driving device and the stirring driving device are simultaneously actuated so that while the solute is being cut, the dissolution liquid is stirred at the same time, and the dissolution liquid is stirred. It is advantageous that the solute is continuously supplied to the rotary cutter while being carried along with the above flow so that the solute can be continuously cut.

As described above, in the case where the solute is simultaneously stirred while cutting the solute, the cutter driving device and the stirring driving device are also used for the other, thereby simplifying the structure. be able to.

Further, when the dissolution treatment is carried out in the dissolution tank, heat is generated along with the cutting of the solute and the stirring of the dissolution liquid. Therefore, it is preferable to provide a cooling means for cooling the dissolution liquid in the dissolution tank.

As this cooling means, it is conceivable to use an internal cooling means for circulating a cooling medium for cooling the dissolution liquid in the dissolution tank, and an ambient cooling means for cooling the dissolution liquid from the periphery of the dissolution tank together. Of these, in order to uniformly cool the solution, it is most preferable to use the internal cooling means and the ambient cooling means in combination, but especially internal cooling has a markedly higher solution flow rate and heat transfer efficiency. Although it is good, it is not as easy to work as the ambient cooling type.

The structure of the internal cooling means is not particularly limited, and for example, it is conceivable to form a refrigerant passage for circulating the refrigerant so as to traverse the flow of the solution. According to this idea, a turbulent flow can be formed in the solution by the refrigerant passage, and the stirring efficiency of the solution can be increased.

As the internal cooling means, for example, a guide cylinder is provided with a cooling jacket which communicates with a coolant supply source and a coolant discharge passage provided outside the melting tank so that the coolant passage does not obstruct the flow of the dissolving liquid. It is preferable.

The structure of the ambient cooling means is not particularly limited as long as it can cool the solution in the dissolution tank from the periphery of the dissolution tank. For example, the peripheral wall of the dissolution tank or the dissolution tank The bottom wall may be provided with a cooling jacket that communicates with a refrigerant supply source and a refrigerant discharge path provided outside the dissolution tank, and the refrigerant supplied from the refrigerant supply source may be configured to cool the dissolution liquid through the dissolution tank. .

[0062]

In the apparatus of the present invention, the solute and the solvent are charged into the dissolution tank from the solute charging port in the upper part of the dissolution tank, or the solute is charged from the solute charging port in the upper part of the dissolution tank and the solvent is injected from the solvent injection port. The solvent is injected.

After the solute is charged and the solvent is injected, the solute in the solution is cut by the rotating cutter by the cutter driving device rotating the rotating cutter, and the rotating stirring blade is rotated by the stirring driving device. The lysate is agitated. In this case, since the solute in the dissolution liquid is cut by the rotary cutter, the cutting step can be processed in the dissolution tank.

In the method of the present invention, since the solute in the solution is cut by the rotary cutter after the solute is charged and the solvent is poured, the cutting step can be performed in the melting tank.
Even if a relatively large and large solute is added, the solute can be fragmented and brought into contact with the solvent, and the solute can be dissolved in the solvent in a short time. When the dissolution is completed, the discharge valve is opened and the solution is taken out.

[0065]

EXAMPLES A method for dissolving a polymer material according to one embodiment of the method of the present invention (hereinafter referred to as the present method) will be described below with reference to a polymer material according to one embodiment of the apparatus of the present invention. The melting apparatus (hereinafter referred to as the present apparatus) will be specifically described including the description, but of course, the present method and the present apparatus are not limited to the specific embodiments of the examples described below. .

As shown in the longitudinal sectional view of FIG. 1, in the method for dissolving a polymer material according to one embodiment of the method of the present invention, the dissolution tank 1 is used.
After injecting a solute composed of a solid polymer material into the dissolution tank 1 from the solute injection port 2 provided in the upper part of the tank and injecting a solvent into the dissolution tank 1 from the solvent injection port 3 provided in the upper part of the dissolution tank 1. , The solute is cut by the rotary cutters 4, 5 and 6 provided in the dissolution tank 1, and the rotary stirring blades 7 provided in the dissolution tank 1
Stir the lysate at 8.9.

When the dissolution is completed, the discharge valve 10 provided at the bottom of the dissolution tank 1 is opened to receive the dissolution liquid in an appropriate container.

The solid polymer material used in this method is a solid polymer material containing a semi-solid, and may be any solid polymer material which is soluble in any solvent. Further, the solvent may be any solvent as long as it can dissolve the solid polymer material.

That is, it is possible to freely select a combination of a solid polymer material suitable for a polymer material solution to be obtained by dissolution and a solvent compatible therewith, for example, to obtain a rubber adhesive. In this case, a natural or synthetic rubber is used as the solid polymer material, which is appropriately selected according to the rubber material used as the solvent.
Aromatic solvents such as toluene and other organic solvents are used.

In this case, 680 kg of organic solvent, 250 kg of rubber base material, and 70 kg of additive such as stabilizer were used.
At this time, if it is charged at once, it may be difficult to float and cut, and if it is a material that easily adheres, it may become a lump, and the rubber base material is gradually charged into a flowing solvent. Is desirable.

However, in order to prevent an error in component control due to volatilization of the solvent, in this method, a predetermined amount of solute is first charged into the dissolution tank 1 and then a predetermined amount of solvent is injected into the dissolution tank 1. ing. In this case, an atmosphere-releasing reflex condenser is used to carry out dripping and reflux of the solvent.

The dissolution tank 1 of the present apparatus may be a tank having an internal space of a required volume or more, but in view of the fact that a solvent having a volatile property is frequently used for the dissolution process, it is a container that can be sealed. Composed.

That is, the solute charging port 2 is provided with double lids 11 and 12 for opening and closing the solute charging port 2, and the solute charging port 2 is sealed by the double lids 11 and 12 after charging the solute. Further, the solvent injection port 3 is connected to a solvent supply source (not shown) in an airtight manner.

The material of the melting tank 1 is not particularly limited,
It has insolubility in solution or solvent, and has required chemical corrosion resistance such as acid resistance, alkali resistance, chemical resistance, and weather resistance, and mechanical strength such as pressure resistance and heat resistance. It is preferable that the dissolution tank 1 has the above-mentioned various characteristics and is excellent in conductivity because it has electrostatic properties due to stirring depending on the components of the dissolution liquid. It is made of stainless steel.

In this device, the rotary cutters 4, 5 and 6
A cutter driving device is provided to drive the rotary stirring blades, and a stirring driving device is provided to drive the rotary stirring blades 7, 8, and 9. The cutter driving device and the stirring driving device may be separately provided. However, in this apparatus, in order to improve the workability of cutting and the dissolution rate and to simplify the configuration, a cutter driving device / stirring driving device 13 that is used as both the cutter driving device and the stirring driving device is provided.

Even when the cutter driving device and the stirring driving device are provided independently of each other, it is possible to simultaneously stir the solution while cutting the solute by operating them simultaneously.

As a result, the solute is placed on the flow of the solution generated by the stirring, and the solute is continuously rotated by the rotary cutters 4.5.
・ 6, the solute is continuously cut to improve the workability of cutting, and the solute is fragmented by the cutting to increase the dissolution rate.

The cutter driving device / stirring driving device 13 of the present device comprises a motor 14, a speed reducer 15, and a drive shaft 16 which is interlockingly connected to the motor 14 via the speed reducer 15, and the drive shaft 16 melts. Rotating cutter 4.5 in the tank 1
・ 6 and the rotary stirring blades 7, 8 and 9 are fixed.

The drive shaft 16 is arranged such that the rotary stirring blades 7, 8 and 9 fixed to the drive shaft 16 are located at positions where stirring of the solution can be carried out, and the rotary cutters 4, 5 and 6 are solutes in the solution. However, in the present device, the drive shaft 16 is dissolved so that the solution can be stirred as evenly as possible and the cutting of the solute does not differ depending on the orientation. It is arranged concentrically with the tank 1 and extends from the upper end to the lower part in the melting tank 1.

Here, although it is not essential to regulate the flow of the dissolved solution stirred in the dissolution tank 1, in the present method, the flow of the dissolved solution stirred in the dissolution tank 1 is directed in a fixed direction. It is guided by the guide cylinder 17 so as to circulate in the direction.

As a result, the solute is continuously and stably guided to the rotary cutters 4, 5, and 6 and efficiently cut, and the dissolution rate is increased due to fragmentation of the solute.

The guide cylinder 17 may be provided so as to circulate the flow of the dissolved solution stirred in the dissolution tank 1 in a fixed direction. In this apparatus, the uniform flow of the dissolved solution in the dissolution tank 1. In order to form the above, the guide cylinder 17 is arranged concentrically with the dissolution tank 1 in the center of the dissolution tank 1, and its transverse shape is formed into a cylindrical shape.

Then, the lower end surface of the guide cylinder 17 is opened to serve as an inlet 18, and an outlet 20 is opened at an intermediate height portion above the peripheral wall 19. By arranging a plurality of outlets 20 at equal intervals in the circumferential direction of the guide tube 17 and arranging the guide tube 17 concentrically with the dissolution tank 1, convection averaged in the circumferential direction in the dissolution tank 1 is obtained. Are formed and the lysate is evenly stirred and homogenized.

However, the inlet 18 and the outlet 2 are provided in the dissolution tank 1.
It is also possible to form a flow in which 0 is the opposite, but in this case as well, convection averaged in the circumferential direction is formed in the dissolution tank 1 in the same manner as above, and the dissolution liquid is evenly stirred. , Homogenized.

The rotary cutters 4, 5 and 6 may be arranged at any position where the solute in the dissolution tank 1 can be cut, but in this apparatus, the guide cylinder 17 in which the dissolution liquid flows in a fixed direction.
The rotary cutters 4, 5 and 6 are arranged in the inside so that the solute that flows on the solution is surely guided to the rotary cutters 4 and 5 and 6.

The number of rotary cutters 4, 5, 6 may be one or more, but in this apparatus, three rotary cutters 4, 5, 6 of the upper, middle and lower stages are used for the flow of the solution. The solutes are provided in multiple stages so that the solutes pass through the rotary cutters 4, 5, and 6 one after another, so that the cutting of the solutes progresses progressively and the solutes are fragmented in a short time.

It suffices that the rotary cutters 4, 5 and 6 are capable of cutting the solute by rotating the blades. For example, the rotary blades 4a fixed to the drive shaft 16 are simply used.
-It may be configured to provide 5a and 6a so that the solute in the solution is cut off.

However, in this apparatus, in order to improve the cutting efficiency, in addition to the rotating blades 4a, 5a, 6a, in the vicinity of the rotating surface thereof, as shown in the vertical sectional view of FIG. 3 and the side view of FIG. The fixed blades 4b, 5b and 6b fixed to face the rotating surfaces of the rotary blades 4a, 5a and 6a are provided, and the fixed blades 4b, 5b and 6b and the rotary blades 4a, 5a and 6a are provided.
The solute is sheared with and.

In this case, the rotary blades 4a, 5a, 6a and the fixed blades 4b, 5b, 6b are the rotary stirring blades 7 and 8 respectively.
・ Although it may be tilted in the opposite direction to 9 or upright, in this device, rotating blades 4a, 5a, 6a and fixed blades 4b, 5b, 6b are provided so as to promote the flow of the solution. There is.

That is, as shown in FIGS. 1 and 2, the upper rotary cutter 4 is arranged at a position slightly lower than the highest stationary liquid level of the solution, and the rotary blade 4a is fixed to the drive shaft 16 by a disc. A large number of radially arranged fixed blades 4b are provided around the periphery of 4c, and a large number of fixed blades 4b are radially arranged around the outer periphery of these rotating blades 4a so that the solute can be sheared by the rotating blades 4a and the fixed blades 4b, Stirring blades 7, 8 and 9 and other rotary cutters 6
The dissolved liquid blown up in the guide cylinder 17 by the rotation of 7 is changed in the radial direction (width direction) by the disc 4c, and the rotary blade 4a promotes the flow in the width direction.

The rotary blade 4a and the disc 4c of the upper rotary cutter 4 are integrally called a rotor, and the fixed blade 4b is integrally called a stator together with upper and lower rings 4d and 4e for holding them.

As shown in FIGS. 1 and 3, the middle and lower rotary cutters 5 and 6 are fixed to the drive shaft 16 and have a plurality of rotary blades 5a and 5a extending radially around the drive shaft 16. 6a and fixed blades 5b and 6b which are located above them and fixed to the guide cylinder 17 and which are radially provided around the drive shaft 16 and which have the rotating blades 5a and 6a and the fixed blades 5b and 6b. The solute can be sheared by the rotating blades 5a and 6a and the fixed blades 5b and 6b while being inclined like the rotating stirring blades 7 and 8 and 9 and the dissolved liquid blown up while spiraling inside the guide cylinder 17 I try to encourage the flow.

As described above, by promoting the flow of the dissolving liquid by the rotary cutters 4, 5 and 6, the stirring efficiency of the dissolving liquid can be improved and the dissolving speed can be further increased.

The number of the rotary stirring blades 7 and 8 may be one or more, but in this apparatus, in order to obtain an axial flow, the rotary stirring blade 9 collects materials having a large specific gravity at the bottom. In order to prevent the discharge, to push it out in the outer peripheral direction and put it on the flow of the suction port, as shown in FIGS. 1 to 3, the three rotary stirring blades 7, 8 and 9 of the upper stage, the middle stage and the lower stage are used to flow the solution. On the other hand, a plurality of stages are provided, and the solution is stirred by the rotating stirring blades 7, 8 and 9 one after another so that the stirring efficiency is progressively increased.

Further, the solution thus obtained has a high viscosity and there is no concentration variation immediately, but it may cause concentration variation if left for a long time. Therefore, by rotating the rotary stirring blades 7, 8 and 9 It is possible to make the concentration uniform.

The rotary stirring blades 7, 8 and 9 may be arranged at positions where the dissolving liquid can be stirred, but in this apparatus, the dissolving tank 1 is so arranged that the dissolving liquid can be discharged while being stirred when discharging the dissolving liquid. The lower rotary stirring blade 9 is arranged at the bottom of the inside.

The lower rotary stirring blade 9 is provided with a focus on the purpose of stirring the solution and advancing the homogenization at the time of discharging the solution, rather than providing the solution in a fixed direction. Therefore, it is arranged outside the guide cylinder 17.

However, the upper and middle rotary stirring blades 7
Since 8 is provided with an emphasis on the purpose of giving a certain direction of flow to the solution during the dissolution process, it is provided in the guide cylinder 17. That is, the rotary stirring blade 7
By arranging 8, the flow of the solution from the rotary stirring blades 7 and 8 in the width direction is restricted by the guide cylinder 17,
The flow of the solution in the axial direction is enhanced, and the rotary stirring blade 7
A strong upward flow of the dissolution liquid is formed in the guide cylinder 17 by the rotation of 8.

By thus forming a strong flow of the dissolution liquid in the dissolution tank 1, the dissolution of the solute is promoted and a highly efficient dissolution treatment is realized.

In the present method, the dissolution liquid is cooled during the dissolution treatment, whereby the reaction between the solute and the solvent due to the heat generation due to the cutting of the solute and the stirring of the dissolution liquid, the deterioration of the dissolution liquid, the deterioration of the dissolution liquid, etc. When the resin component is polycondensed by heat, the resin may have a high molecular weight, the viscosity of the solution may increase, and the processing speed may slow down.

For this reason, this apparatus is provided with cooling means for cooling the solution in the dissolution tank 1. The dissolution liquid may be cooled by naturally or forcibly circulating the solvent around the dissolution tank 1 to cool the dissolution liquid via the peripheral wall of the dissolution tank 1. A refrigerant may be circulated and the solution may be cooled in the dissolution tank 1 by this refrigerant.
The cooling from the surroundings and the cooling in the melting tank 1 may be used together.

The present method employs, among these methods, a method in which cooling from around the dissolution tank and cooling in the dissolution tank are used together in order to uniformly cool the solution.

That is, as the cooling means, an internal cooling means for circulating a refrigerant for cooling the solution in the dissolution tank 1,
It is conceivable to use these together with the ambient cooling means for cooling the dissolution liquid from the periphery of the dissolution tank, but in this device, in order to uniformly cool the dissolution liquid, the internal cooling means and the ambient cooling means are used together. To be done.

That is, the peripheral wall and the bottom wall of the portion lower than the highest liquid level of the dissolution liquid in the dissolution tank 1 are double walls to provide a cooling jacket 21 as a peripheral cooling means and to melt the cooling jacket 21. Refrigerant that is communicated with a coolant supply source and a coolant discharge passage provided outside the tank 1 and flows from the coolant supply source to the coolant discharge passage through the cooling jacket 21 through the peripheral wall and bottom wall of the dissolution tank 1 So that it can be cooled.

Further, the structure of the internal cooling means is not particularly limited, and it is conceivable that, for example, the refrigerant passage for circulating the refrigerant is formed so as to cross the flow of the dissolved liquid.

In this apparatus, a part of the peripheral wall of the guide cylinder 17 is made into a double wall, and the cooling jacket 2 as the internal cooling means is used.
2 is provided, and the cooling jacket 22 is communicated with the refrigerant supply source and the refrigerant discharge path provided outside the melting tank 1.

As a result, the refrigerant passage, that is, the cooling jacket 22 does not hinder the flow of the solution, particularly the flow of the solute in the solution, so that the solute is surely introduced into the rotary cutters 4, 5 and 6. At the same time, the melt flowing from the coolant supply source through the cooling jacket 22 to the coolant discharge passage cools the solution in the central portion of the dissolution tank 1 through the wall of the cooling jacket 22.

The cooling medium for cooling the solution may be any of those generally used as a cooling medium. For example, the atmosphere, nitrogen gas obtained by vaporizing liquefied nitrogen, freon gas, (a substitute for freon), or the like, It may be a liquid such as water or oil.

Among these, in order to reduce the cost, it is recommended to use the atmosphere or water which can be obtained easily and inexpensively as the refrigerant, but in the present method and the present apparatus,
Water, which has a higher cooling efficiency than air, is used as the refrigerant.

The cooling method for the solution may be a natural cooling method in which the flow of the refrigerant is left to the natural convection of the refrigerant.
It may be a forced cooling method in which it is forced to flow by suction or the like, but in this method and this apparatus, a forced water cooling method is adopted to surely cool the solution.

In this device, the drive shaft 16 is
A rotating buffer plate 24 is fixed to the upper part of the above so as to prevent the hoisting phenomenon of the highly viscous liquid.

An observation window 25 for observing the inside of the melting tank 1 is provided at the bottom of the melting tank 1, and the cooling jacket 21 is entirely covered with a heat insulating material 26.

In this case, the solid content of the base material such as rubber is introduced after injecting a predetermined amount of solvent, but in the case of synthetic resin, since the amount is granular and a small amount, the synthetic resin is introduced first.

Therefore, the solute is in a relatively large state.
Even if it is charged into the solvent, it is cut into small pieces by the rotary cutters 4, 5 and 6 in the dissolving tank 1 and can be efficiently brought into contact with the solvent.

That is, since this fragmentation proceeds at the same time as the dissolution, the solute cutting step and the dissolution step can be performed at the same place at the same time. For example, the production of a polymer material solution such as a rubber-based adhesive agent can be performed. The process can be simplified.

Moreover, since the solute is cut in the melting tank, there is no fear that dust generated by the cutting will be diffused to the surroundings, and the working hygiene is improved.

Further, since the solute is brought into contact with the solvent while being cut by the rotary cutters 4, 5 and 6, the dissolution rate can be remarkably increased. For example, when the 1 kiloliter dissolution tank 1 is fully operated, A homogeneous polymer solution can be obtained in about 4 hours. That is, the cutting work and the melting work can be completed within one working day (6 to 8 hours), the working time is reduced to half that of the conventional one, and the labor cost due to overtime can be saved. Like

In this apparatus, the dissolution tank 1 and the guide cylinder 17 are arranged in a vertical axis, but it is possible to arrange one or both of them in a horizontal axis.

[0119]

As described above, the device of the present invention is
A dissolution tank having at least a solute inlet at the top and a discharge valve at the bottom, a rotary cutter and a rotary stirring blade arranged in the dissolution tank, a cutter drive device for driving the rotary cutter, and a rotation drive device. Since a stirring drive device for driving is provided, a solute and a solvent made of a solid polymer material are put into the dissolution tank from a solute input port, or a solute made of the solid polymer material is put in the dissolution tank from a solute input port, and After the solvent is introduced from the solvent injection port, the solute and the solvent can be stirred by the rotary stirring blade provided in the dissolution tank while cutting the solute with the rotary cutter provided in the dissolution tank.

Therefore, the cutting step and the dissolving step, which are conventionally performed separately step by step, can be processed in one step, and the polymer dissolving solution manufacturing step can be simplified.

Moreover, since the cutting is carried out in the melting tank, there is no fear that the dust generated by the cutting will be diffused to the surroundings, and the working hygiene and working environment can be improved.

Further, the dissolution rate can be increased by cutting the solute into small pieces by cutting with a rotary cutter, and the solid polymer material containing semi-solid can be dissolved within a short time.

In the apparatus of the present invention, particularly when a guide member for guiding the flow of the dissolving solution is provided in the dissolving tank, the flow of the dissolving solution in the dissolving tank can be stabilized, and the solute can be dissolved in the dissolving solution. Since the solute can be carried on the flow and reliably guided to the rotary cutter, the solute is reliably cut and fragmented by the rotary cutter, thereby increasing the dissolution rate.

Here, when the dissolving member is constituted by a cylindrical guide cylinder and the guide cylinder is arranged in the central portion of the dissolving tank, the flow of the dissolving liquid in the dissolving tank is equalized in the circumferential direction. It is possible to uniformly dissolve the solute in the dissolution tank, and the time required for the dissolution can be shortened as compared with the case where the progress of the dissolution is uneven, and a homogeneous polymer solution is obtained. be able to.

In the apparatus of the present invention, when a guide cylinder is provided as a guide member and at least one stage of rotary cutter is coaxially arranged in the hollow part of the guide cylinder, the installation position of the guide cylinder is the central part in the melting tank. Regardless of whether or not it is present, the solute can be put on the flow of the dissolving liquid and reliably guided to the rotary cutter for efficient cutting, and the solute can be reliably fragmented and the dissolution rate can be reliably increased by one tank. .

In the apparatus of the present invention, in particular, when a guide cylinder is provided as a guide member and at least one stage of rotary stirring blades is coaxially arranged in the hollow portion of the guide cylinder, the rotary stirring blades are rotated. The width flow is restricted by the guide tube, and a strong flow of the dissolved solution can be formed, which surely guides the solute to the rotary cutter to make it into pieces and makes the contact between the solute and the solvent violent, The dissolution rate can be increased by one tank.

Further, in the apparatus of the present invention, particularly when a plurality of rotary cutters are provided, the solution is guided to the rotary cutter one after another to progressively fragment the solute,
The dissolution rate can be increased by one tank.

Further, in the apparatus of the present invention, particularly when a plurality of stages of rotary stirring blades are provided, the solution can be stirred one after another by the rotary stirring blades to progressively improve the stirring efficiency. The dissolution rate can be increased by one tank.

Further, in the device of the present invention, when a guide tube is provided as a guide member and at least one rotary cutter is coaxially arranged in the hollow portion of the guide cylinder, the at least one rotary cutter serves as the guide cylinder. By providing a fixed blade to be fixed and a rotating blade rotatably provided in the vicinity of the fixed blade in the guide cylinder, the solute can be sheared by the fixed blade and the rotating blade,
The solute can be reliably fragmented and the dissolution rate can be increased by one tank.

Here, when the rotary blade and the fixed blade of the rotary cutter are inclined along the flow of the solute and solvent formed by the rotary stirring blade, the flow of the solution is promoted by the rotation of the rotary blade, The stirring efficiency between the solvent and the solvent can be increased to further increase the dissolution rate by one tank.

Further, in the apparatus of the present invention, when the cutter driving device and the stirring driving device are also used for the other, the cutting of the solute by the rotary cutter and the stirring of the solution by the rotating stirring blade are simultaneously performed in parallel. It can be performed, the configuration is simple, and the facility cost can be reduced.

In the apparatus of the present invention, particularly when the dissolution tank is provided with a cooling means for cooling the solute and the solvent, the reaction between the solute and the solvent due to the heat generated by cutting the solute and stirring the solution, Deterioration can be prevented.

Here, when the internal cooling means is provided as the cooling means in the dissolution tank, the dissolution liquid can be cooled by the internal cooling means inside the dissolution tank which is difficult to cool, so that the dissolution liquid can be efficiently cooled, It is possible to efficiently prevent the reaction between the solute and the solvent and the alteration of the solution.

Here, a guide member for guiding the flow of solute and solvent is provided in the dissolution tank, and a cooling jacket provided on the guide member and communicating with a refrigerant supply source and a refrigerant discharge path provided outside the dissolution tank. If the internal cooling device is configured with, the internal cooling device does not obstruct the flow of the dissolution liquid and the solute is easily guided to the rotary cutter, so that the cutting efficiency of the solute is increased, and thus the dissolution rate is increased. Can be increased.

As the cooling means, when the peripheral cooling means for cooling the solute and the solvent in the dissolution tank is provided around the dissolution tank, the solution in the peripheral portion of the dissolution tank is efficiently cooled. Thus, it is possible to efficiently prevent the reaction between the solute and the solvent in the peripheral portion of the dissolution tank, the deterioration of the dissolution liquid, the increase in viscosity of the dissolution liquid, and the decrease in the processing speed due to the increase in viscosity.

When the internal cooling means and the surrounding cooling means are used together as the cooling means, the dissolution liquid in the dissolution tank can be uniformly cooled, and the reaction between the solute and the solvent over the entire dissolution liquid. It is possible to efficiently prevent the deterioration of the solution, the increase in viscosity of the solution, and the decrease in processing speed due to the increase in viscosity.

In the method of the present invention, a solute made of a solid polymer material and a solvent are put into a dissolution tank, the solute is cut by a rotary cutter provided in the dissolution tank, and a rotary stirring blade provided in the dissolution tank. Since the solute and the solvent are stirred in step 1, the cutting step and the dissolving step, which are conventionally performed separately stepwise, can be processed in one step, and the manufacturing step of the polymer solution can be simplified.

Moreover, since the cutting is carried out in the melting tank, there is no fear that dust generated by the cutting will be diffused to the surroundings, and the working hygiene is improved.

Further, the dissolution rate can be increased by cutting the solute into small pieces by cutting with a rotary cutter, and the solid polymer material containing semi-solid can be dissolved within a short time.

In the method of the present invention, particularly when the cutting of the solute and the stirring of the solute and the solvent are continuously carried out at the same time,
The solute can be placed on the flow of the dissolution liquid and guided to the rotary cutter, so that the solute can be efficiently fragmented and the dissolution rate can be increased by fragmenting the solute, and within one tank short time. The solute can be dissolved in the solvent.

In the method of the present invention, particularly when the flow of the solute and the solvent stirred in the dissolution tank is guided by the guide member, the flow of the dissolution liquid in the dissolution tank can be stabilized and the solute can be stably maintained. To the rotary cutter,
Moreover, it is possible to surely cut, and thereby the dissolution rate can be increased by one tank, and the solute can be dissolved in the solvent within a short time in one tank.

In the method of the present invention, in particular, when the guide member guides the flow of the solute and the solvent so as to be even in the circumferential direction, the dissolution can be promoted uniformly, so that the dissolution proceeds nonuniformly. The time required for dissolution can be shortened and the product can be homogenized as compared with the case of

In the method of the present invention, when the width flow of the solution produced by the rotary stirring blade is limited to promote the axial flow,
It is possible to form a strong flow of the dissolution liquid, which can increase the stirring efficiency and the dissolution speed, and the solute can be easily guided to the rotary cutter, so that the solute can be cut efficiently in one tank. it can.

In the method of the present invention, when the solute is cut at a location where the flows of the solute and the solvent are concentrated, the solute can be cut surely into fine pieces, thereby increasing the dissolution rate and The solute can be dissolved in the solvent within a short time in the bath.

In the method of the present invention, when the solution in the dissolution tank is cooled, it is possible to prevent the reaction between the solute and the solvent and the alteration of the solution due to the heat generated by cutting the solute and stirring the solution.

Here, when the solute and the solvent are cooled by circulating the refrigerant through the refrigerant passage provided in the dissolution tank, the solution in the central portion of the dissolution tank, which is particularly difficult to cool, can be efficiently cooled.

Further, in this case, when the solute and solvent flows in the dissolution tank are guided by the guide member and the refrigerant is circulated through the refrigerant passage formed inside the guide member to cool the solute and solvent, Since the cooling passage does not obstruct the flow of the solute, especially the solute in it, it becomes possible to easily guide the solute to the rotary cutter and cut it, and the stirring resistance of the solute decreases and the stirring efficiency decreases. Can be prevented.

When cooling the dissolving liquid in the method of the present invention, the solute and the solvent are cooled by circulating the cooling medium through the cooling medium passage provided around the dissolving tank so that the dissolving liquid in the peripheral portion of the dissolving tank is removed. It can be cooled efficiently.

When the cooling medium is circulated in the cooling passage provided in the dissolution tank and the solute and the solvent are cooled by circulating the cooling medium in the cooling passage provided around the dissolution tank, The melt can be cooled evenly throughout and the homogeneity of the product can be increased.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the device of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of an embodiment of the device of the present invention.

FIG. 3 is a side view of another main part of an embodiment of the device of the present invention.

[Explanation of symbols]

 1 Melt tank 2 Solute inlet 3 Solvent inlet 4/5/6 Rotating cutter 4a / 5a / 6a Rotating blade 4b / 5b / 6b Fixed blade 7/8/9 Rotating stirring blade 13 Cutter driving device / stirring driving device 17 Guide Cylinder 21 Cooling jacket 22 Cooling jacket

Claims (26)

[Claims] 1. A solute comprising a solid polymer material and a solvent are charged into a dissolution tank, and then the solute is cut by a rotary cutter provided in the dissolution tank, while a solute is provided by a rotary stirring blade provided in the dissolution tank. And a method of dissolving a polymer material, which comprises stirring the solvent. 2. The method for dissolving a polymer material according to claim 1, wherein the cutting of the solute and the stirring of the solute and the solvent are simultaneously and continuously performed. 3. The guide member guides the flow of the solute and the solvent stirred in the dissolution tank.
The method for dissolving a polymer material according to 1. 4. The solute and the solvent flow are guided by the guide member so as to be even in the same direction.
The method for dissolving a polymer material according to 1. 5. The method for dissolving a polymeric material according to claim 1, wherein the widthwise flow of the solute and the solvent generated by the rotary stirring blade is restricted to promote the axial flow. 6. The method for dissolving a polymer material according to claim 1, wherein the solute is cut at a position in the guide member where the flows of the solute and the solvent are concentrated. 7. The method for dissolving a polymer material according to claim 1, wherein the solvent and the solute in the dissolution tank are cooled. 8. The method for dissolving a polymer material according to claim 7, wherein the solute and the solvent are cooled by circulating a refrigerant through a refrigerant passage provided in the dissolution tank. 9. The solute and solvent flows in the dissolution tank are guided by a guide member, and the solute and solvent are cooled by circulating a refrigerant in a refrigerant passage formed inside the guide member. Item 9. A method for dissolving a polymer material according to Item 7 or 8. 10. A solute and a solvent are cooled by circulating a refrigerant through a refrigerant passage provided around the dissolution tank.
The method for dissolving a polymer material according to any one of 1. 11. The solute and the solvent are cooled by circulating a refrigerant through a cooling passage provided inside the melting tank and circulating a refrigerant through a cooling passage provided around the melting tank. The method for dissolving a polymeric material as described in. 12. A melting tank having at least a solute inlet at the top and a discharge valve at the bottom, a rotary cutter and a rotary stirring blade arranged in the melt tank, and a cutter driving device for driving the rotary cutter. And a stirring blade device that drives a rotating stirring blade. 13. The apparatus for dissolving a polymeric material according to claim 12, wherein a guide member for guiding the flow of solute and solvent is provided in the dissolution tank. 14. The guide member comprises a tubular guide tube,
14. The apparatus for dissolving a polymeric material according to claim 13, wherein the guide tube is provided in a central portion of the dissolving tank. 15. The guide member comprises a tubular guide tube,
15. The apparatus for dissolving a polymeric material according to claim 13 or 14, wherein at least one stage of the rotary stirring blade is coaxially arranged in the hollow portion in the guide cylinder. 16. The guide member comprises a tubular guide tube,
The apparatus for dissolving a polymer material according to any one of claims 13 to 15, wherein at least one stage of rotary cutter is coaxially arranged in the hollow portion of the guide cylinder. 17. The guide member comprises a tubular guide tube,
14. A fixed blade having at least one stage rotary cutter fixed to the guide tube, and a rotary blade rotatably provided near the fixed blade in the guide tube.
17. The apparatus for dissolving a polymer material according to any one of 1 to 16. 18. The apparatus for dissolving a polymeric material according to claim 17, wherein the rotary blade and the fixed blade of the rotary cutter are inclined similarly to the rotary stirring blade. 19. The apparatus for dissolving a polymeric material according to claim 12, further comprising a plurality of rotary cutters. 20. The apparatus for dissolving a polymeric material according to claim 12, wherein a plurality of stages of rotary stirring blades are provided. 21. The apparatus for dissolving a polymer material according to claim 12, wherein the cutter driving device and the stirring driving device are also used for the other. 22. The apparatus for dissolving a polymeric material according to claim 12, wherein the dissolving tank is provided with a cooling means for cooling the solute and the solvent. 23. The apparatus for melting a polymeric material according to claim 22, wherein an internal cooling means is provided in the melting tank. 24. A guide member for guiding the flow of solute and solvent is provided in the dissolution tank, and a cooling jacket provided on the guide member and communicating with a refrigerant supply source and a refrigerant discharge path provided outside the dissolution tank. 24. The apparatus for melting a polymeric material according to claim 23, wherein the internal cooling device is constituted by. 25. An external cooling means for cooling the solute and solvent in the dissolution tank is provided around the dissolution tank.
25. The dissolution apparatus for polymer material according to any one of 2 to 24. 26. The cooling means comprises an internal cooling means provided inside the melting tank and an external cooling means provided around the melting tank. The apparatus for dissolving a polymer material according to 1.