KR20160078114A - Chopper for manufacturing super absorbent polymer and method for manufacturing super absorbent polymer using the same - Google Patents

Abstract

The present invention provides a cutting device for manufacturing a high absorbable resin, and a method for manufacturing a high absorbable resin using the same. The cutting device for manufacturing a high absorbable resin comprises: a pipe where the diameter of an inlet is larger than the diameter of the outlet; a rotary wing disposed inside the pipe; a plate disposed on one side of the pipe and having a plurality of through-holes; and a rotary blade disposed between the pipe and the plate. The purpose of the present invention is to provide the cutting device for manufacturing a high absorbable resin, improving physical properties of the high-absorbable resin.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cutting apparatus for producing a superabsorbent resin,

The present invention relates to a cutting apparatus for producing a superabsorbent resin and a method for producing a superabsorbent resin using the same.

Super Absorbent Polymer (SAP) is a synthetic polymer material capable of absorbing about 500 to 1,000 times its own weight of moisture. Super SAM (Super Absorbent Material), AGM (Absorbent Gel Material) And so on. The above-mentioned superabsorbent resin has started to be put into practical use as a sanitary article, and nowadays, in addition to sanitary articles such as diapers for children, there are now various kinds of sanitary articles such as soil repair agents for horticultural use, index materials for civil engineering and construction, sheets for seedling, It is widely used as a material for articles and the like.

As a method of producing such a superabsorbent resin, there are known methods such as reversed-phase suspension polymerization or aqueous solution polymerization. The reversed-phase suspension polymerization is disclosed in, for example, Japanese Unexamined Patent Publication No. 56-161408, Unexamined Japanese Patent Application No. 57-158209, and Japanese Unexamined Patent Publication No. 57-198714. As a method of aqueous solution polymerization, a thermal polymerization method in which heat is applied to an aqueous solution and a photopolymerization method in which polymerization is performed by irradiating ultraviolet rays or the like are known.

A problem to be solved by the present invention is to provide a cutting apparatus for producing a superabsorbent resin which improves physical properties of a superabsorbent resin.

And a method of manufacturing a superabsorbent resin in which the physical properties of the superabsorbent resin are improved.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of manufacturing the same.

In order to solve the above problems, a cutting device for producing a super absorbent polymer of an embodiment includes a pipe having a diameter larger than a diameter of a discharge port; A rotating blade disposed in the tube pipe; A plate disposed at one side of the pipe pipe and including a plurality of through holes; And a rotating blade disposed between the tube pipe and the plate.

In a non-limiting example, the diameter of the tube pipe may gradually decrease from the inlet to the outlet. As a specific example, the diameter of the pipe pipe can be reduced linearly from the inlet to the outlet.

On the other hand, a plurality of cutting grooves may be formed in the inner wall of the pipe pipe. The plurality of cutout grooves may be periodically arranged along the longitudinal direction of the pipe pipe.

According to an aspect of the present invention, there is provided a cutting apparatus for manufacturing a superabsorbent resin, comprising: a pipe having a rotating blade disposed in a hollow portion; A plate disposed at one side of the pipe pipe and including a plurality of through holes having a diameter larger than that of the discharge portion; And a rotating blade disposed between the tube pipe and the plate.

In a non-limiting example, each of the plurality of through holes may have a diameter of the inlet portion that is larger than a diameter of the outlet portion. As a specific example, each of the plurality of through holes may be gradually reduced in diameter from the inlet portion to the outlet portion, and in a more specific example, each of the plurality of through holes may be formed such that, as the diameter moves from the inlet portion to the outlet portion Can be linearly reduced.

And the inflow portion is disposed closer to the discharge port of the pipe pipe than the discharge portion.

In order to solve the above-mentioned problems, a method of producing a super absorbent polymer is characterized in that a hydrogel polymer is cut using the above-described cutting apparatus.

In a non-limiting example, the method for producing a superabsorbent resin comprises the steps of: preparing a monomer composition comprising a hydrophilic monomer, a crosslinking agent, and a polymerization initiator; A hydrogel polymer preparation step of the monomer composition; And a hydrogel polymer cutting step of cutting the hydrogel polymer using the above-described cutting apparatus.

The cutting device for producing a superabsorbent resin can reduce the shear stress and the calorific value generated in the cutting device when the hydrogel polymer is cut. Therefore, the cutting apparatus for producing a superabsorbent resin can provide a superabsorbent resin having a reduced amount of extractable content (EC).

The method for producing a superabsorbent resin can provide a superabsorbent resin having a low water-soluble component (EC) value by cutting hydrogel polymers using a cutting device with reduced shear stress and calorific value.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a schematic cross-sectional view of a cutting apparatus for producing a superabsorbent resin according to an embodiment of the present invention.
Figure 2 is a schematic perspective view of the plate of Figure 1;
3 is a schematic cross-sectional view taken along line III-III 'of FIG.
4 is a schematic process flow chart of a method for producing a superabsorbent resin according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another.

1 is a schematic cross-sectional view of a cutting apparatus for producing a superabsorbent resin of the present invention. Figure 2 is a schematic perspective view of the plate of Figure 1; 3 is a schematic cross-sectional view taken along line III-III 'of FIG.

1 to 3, a cutting apparatus 100 for producing a superabsorbent resin includes a pipe 10, a rotary blade 21, a rotary shaft 22, a plate 30, and a rotary blade 40 .

The pipe pipe 10 is a hollow barrel-shaped barrel which includes an inlet port 11 and an outlet port 12 and includes a hollow portion 13 connecting the inlet port 11 and the outlet port 12. The pipe pipe 10 can transport the hydrogel polymer P introduced into the inlet 11 to the discharge port 12 through the hollow portion 13. The transporting force for transporting the hydrogel polymer (P) is generated by the rotating blades (21) and the rotating shaft (22).

At one side of the inlet port 11 a hydrogel polymer P feeder GS may be disposed and the inlet 11 may communicate with the hydrogel polymer P feeder GS. The diameter D1 of the charging port 11 is larger than the diameter D2 of the discharging port 12. [ The pipe pipe 10 has a structure in which the diameter D1 of the charging port 11 is larger than the diameter D2 of the discharging port 12 and the shearing stress generated in the hydrogel polymer P flowing into the charging port 11 And the water soluble component (EC) can be prevented from increasing.

The pipe pipe 10 may be in the shape of a conical pillar. In other words, the hollow portion 13 may be in a conical pillar shape. The diameter D3 of the hollow portion 13 can be linearly decreased from the charging port 11 to the discharging port 12. [ The fact that the diameter D3 of the hollow portion 13 linearly decreases from the inlet 11 to the outlet 12 means that the inner wall IW of the hollow portion 13 does not have a step. Although not shown, the diameter D3 of the hollow portion 13 may gradually decrease from the inlet 11 to the outlet 12. The diameter D3 of the hollow portion 13 gradually decreases from the charging port 11 toward the discharge port 12 as the diameter D3 of the hollow portion 13 is gradually decreased to decrease the diameter D3 of the inner portion of the hollow portion 13 IW) having a stepped portion.

The shape of the pipe 10 is not limited to a conical pillar, but may be a cylindrical shape, a polygonal column, a polygonal pyramid, or the like. In this case, the diameter D1 of the inlet 11 is larger than the diameter D2 of the outlet 12, and the diameter D3 of the hollow 13 gradually decreases from the inlet 11 to the outlet 12 .

A plurality of cut-out grooves H may be formed in the inner wall IW of the hollow portion 13. The plurality of incision grooves H may be periodically arranged along the longitudinal direction L of the hollow portion 13. [ The rotary vane 21 and the rotary shaft 22 may be disposed in the hollow portion 13. A plurality of incision grooves (H) can receive the edge of the rotary vane (21).

The rotary blades 21 are rotatable while the edges are received in the incision grooves H and the rotary blades 21 can transport the hydrogel polymer P from the inlet 11 to the outlet 12. [ The rotary vane 21 is coupled to the outer peripheral surface of the rotary shaft 22, and the rotary shaft 22 provides rotational force to the rotary vane 21.

The rotary vane 21 can be designed in a spiral shape. However, the shape of the rotary vane 21 is not particularly limited as long as it is a structure capable of transporting the hydrogel polymer P from the inlet 11 to the outlet 12.

The plate (30) is disposed on the other side of the pipe pipe (10). In other words, the plate 30 is disposed closer to the outlet 12 than the inlet 11. The plate 30 includes a plurality of through holes TH. The plurality of through holes TH includes an inlet TH1 and a discharge portion TH2 and a body portion TH3 connecting the inlet portion TH1 and the discharge portion TH2. The inlet TH1 is disposed closer to the outlet 12 of the pipe 10 than the outlet TH2.

In a non-limiting example, each of the plurality of through holes TH may have a diameter D4 of the inlet TH1 larger than a diameter D5 of the outlet TH2. The through holes TH having a structure in which the diameter D4 of the inlet portion TH1 is larger than the diameter D5 of the outlet portion TH2 are formed in such a manner that the diameter of the inlet portion and the diameter of the outlet portion It is possible to reduce the friction with the hydrogel polymer P passing through the holes TH so that the property of the superabsorbent resin due to the friction can be prevented from deteriorating and the hydrogel polymer P has a small diameter D5 The drying efficiency can be improved while passing through the discharge portion TH2.

As a specific example, each of the plurality of through holes TH can be gradually reduced as the diameter D6 of the body portion TH3 goes from the inlet portion TH1 to the outlet portion TH2. More specifically, each of the plurality of through holes TH can be linearly reduced as the diameter D6 of the body portion TH3 goes from the inlet portion TH1 to the outlet portion TH2.

The fact that the diameter D6 of the trunk portion TH3 gradually decreases from the inlet TH1 to the outlet portion TH2 means that the diameter D6 of the trunk portion TH3 is decreased stepwise, (ITW). On the other hand, the fact that the diameter D6 of the trunk portion TH3 decreases linearly from the inlet portion TH1 to the outlet portion TH2 means that the inner wall ITW of the body portion TH3 does not have a step .

The plate 30 may further include a center hole P0. The through holes TH may be disposed at the outer periphery of the center hole PO. The diameter of the center hole P0 may be larger than the diameter of the through holes TH. However, it is not limited to this. In the center hole P0, a fixing shaft (not shown) for fixing the plate 30 to the cutting device can be mounted. The center hole P0 serves to fix the plate 30 to the cutting device and can be designed in various positions depending on the position of the fixed shaft of the cutting device.

The rotary blade (40) is disposed between the pipe (10) and the plate (30). The rotating blade 40 cuts the hydrogel polymer P discharged through the discharge port 12 of the pipe pipe 10 to a smaller particle diameter than the hydrogel polymer P in the hydrogel polymer P supply part GS can do. By way of non-limiting example, the diameter of the hydrous gel polymer (P) in the hydrogel polymer (P) feed (GS) may be of the order of centimeters in size and the hydrogel polymer (P) Size.

A rotary blade 40 may be disposed on one side of the plate 30 and a tray 30 may be provided on the other side of the plate 30 to receive the hydrogel polymer P having passed through the through holes TH of the plate 30 T may be disposed.

4 is a schematic process flow diagram of a method for producing a superabsorbent resin according to an embodiment of the present invention.

The method of producing a superabsorbent resin may include a step (S3) of cutting the hydrogel polymer using a monomer composition production step (S1), a hydrogel polymer production step (S2), and a cutting device for producing a superabsorbent resin have.

The monomer composition production step (S1) comprises a first mixing step (S11) of mixing a neutralizing agent with a hydrophilic monomer to prepare a first mixture, and a second mixing step (S11) of mixing a second mixture containing an internal crosslinking agent and a polymerization initiator into the first mixture And a mixing step (S12).

The hydrophilic monomer can be used without limitation as long as it is a monomer generally used in the production of a superabsorbent resin. The hydrophilic monomer is a monomer containing a hydrophilic group. The hydrophilic group may be, for example, a hydroxyl group (-OH), a carboxyl group (-COOH), an amide group (-NH ₂ , -NH ₂ , -NR ₂ ).

In a non-limiting example, the hydrophilic monomer may be a water soluble ethylenically unsaturated monomer. The water-soluble ethylenically unsaturated monomer may be at least one member selected from the group consisting of an anionic monomer and its salt, a nonionic hydrophilic-containing monomer, and an amino group-containing unsaturated monomer and a quaternary product thereof.

In a non-limiting example, acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, crotonic acid, itaconic acid, 2-acryloylethanesulfonic acid, 2- methacryloylethanesulfonic acid, 2- (meth) acryloylpropanesulfonic acid And at least one anionic monomer selected from the group consisting of 2- (meth) acrylamide-2-methylpropanesulfonic acid or a salt thereof; (Meth) acrylamide, N-substituted (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, methoxypolyethylene glycol Methacrylate; and at least one nonionic hydrophilic-containing monomer selected from the group consisting of (meth) acrylate; Or an unsaturated monomer containing at least one amino group selected from the group consisting of (N, N) -dimethylaminoethyl (meth) acrylate and (N, N) -dimethylaminopropyl (meth) acrylamide, .

The concentration of the water-soluble ethylenically unsaturated monomer can be appropriately selected in consideration of the polymerization time and the reaction conditions (feeding rate of the monomer composition, irradiation time of heat and / or light, irradiation range, irradiation intensity, etc.) In embodiments, it may be in the range of from greater than 40 wt% to less than 60 wt%.

The neutralizing agent may serve to neutralize the hydrophilic monomer. Representative neutralizers include, but are not limited to, sodium hydroxide, sodium hydrogencarbonate, and the like. The neutralizing agent can be used within a range that the degree of neutralization of the monomer composition is from 65 mol% to 75 mol%. However, it is not limited to this.

The internal cross-linking agent includes at least one functional group capable of reacting with the substituent of the hydrophilic monomer and at least one ethylenic unsaturated group or at least two functional groups capable of reacting with the substituent formed by hydrolysis of the hydrophilic monomer and the substituent of the hydrophilic monomer May be used.

In a non-limiting example, the internal cross-linking agent is selected from the group consisting of bisacrylamide having 8 to 12 carbon atoms, bismethacrylamide having 8 to 12 carbon atoms, poly (meth) acrylate of polyol having 2 to 10 carbon atoms, or poly (Meth) allyl ether. Specific examples thereof include (poly) ethylene glycol (meth) acrylate, (poly) propylene glycol di (meth) acrylate, trimethylolpropane tri Trimethylolpropane tri (meth) acrylate, ethoxyl (6) -trimethylol propane tri (meth) acrylate, ethoxyl (9) ) -Trimethylolpropane tri (meth) acrylate glycerin tri (meth) acrylate, glycerin acrylate methacrylate, 2,2-bis [acryloyloxy] methyl] butyl acrylate (3EO) Methylene bis (meth) (Meth) acrylate, propyleneoxy (meth) acrylate, glycerin, glycerin diacrylate, glycerin triacrylate, trimethylol triacrylate, triallyl amine, Triallyl isocyanate, pentaethylene imine, ethylene glycol, polyethylene glycol diethylene glycol, propylene glycol, or a mixture of two or more thereof, but is not limited thereto.

In a non-limiting example, the internal cross-linking agent may be included in an amount of not less than 0.01 parts by weight and not more than 0.5 parts by weight based on 100 parts by weight of the hydrophilic monomer, but is not limited thereto.

The polymerization initiator may be at least one selected from the group consisting of a photopolymerization initiator and a thermal polymerization initiator.

Examples of the photopolymerization initiator include, but are not limited to, diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 4- (2- hydroxyethoxy) 2-hydroxy-2-propyl ketone, 1-hydroxycyclohexyl phenyl ketone, and other acetophenone derivatives; Benzoin alkyl ether compounds such as benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether and benzoin isobutyl ether; benzophenone derivatives such as methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyl-diphenyl sulfide and (4-benzoylbenzyl) trimethylammonium chloride; Thioxanthone-based compounds; Acylphosphine oxide derivatives such as bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide and diphenyl (2,4,6-trimethylbenzoyl) -phosphine oxide; Or an azo group such as 2-hydroxymethylpropionitrile, 2,2 '- (azobis (2-methyl-N- (1,1'-bis (hydroxymethyl) -2- hydroxyethyl) propionamide) And the like can be used alone or in combination of two or more, but the present invention is not limited thereto.

The thermal polymerization initiator is not particularly limited. For example, azo (azo) initiator, peroxide initiator, redox initiator or organic halide initiator may be used alone or in combination of two or more thereof . The thermal polymerization initiator may include, but is not limited to, sodium persulfate (Na ₂ S ₂ O ₈ ) or potassium persulfate (K ₂ S ₂ O ₈ ).

The content of the photopolymerization initiator and / or the thermal polymerization initiator can be selected as long as it can exhibit polymerization initiating effect. In a non-limiting example, the photopolymerization initiator may be contained in an amount of from 0.005 parts by weight to 0.1 parts by weight or less based on 100 parts by weight of the hydrophilic monomer, and the thermal polymerization initiator may be contained in an amount of 0.01 part by weight or more to 100 parts by weight of the hydrophilic monomer 0.5 parts by weight or less.

In a nonlimiting example, the polymerization initiator can be a photopolymerization initiator and a thermal polymerization initiator. In this case, the photopolymerization initiator is introduced into the neutralizing agent aqueous solution together with the hydrophilic monomer and the crosslinking agent, Can be added to the neutralizing agent.

The hydrogel polymer preparation step (S2) may include a polymerization reaction step (S21) for irradiating the monomer composition with ultraviolet light; and a first cutting step (S22) for cutting the polymerization reaction product.

In the polymerization reaction step (S21), the monomer composition may be irradiated with ultraviolet rays to proceed the polymerization reaction. The monomer composition may be photopolymerized or photopolymerized and thermopolymerized. When the monomer composition is irradiated with light, the photopolymerization initiator initiates photopolymerization, and polymerization by the thermal polymerization initiator may occur due to heat generated during photopolymerization.

In the first cutting step (S22), after the polymerization reaction is completed, the polymerization reaction product can be cut into a size of centimeter. As a non-limiting example, it can be cut to a size of about 1 cm or more to 3 cm or less. The water content of the result of the cleavage of the polymerization reaction may be about 40 wt% to 60 wt%. However, it is not limited to this.

The second cutting step (S3) of cutting the hydrogel polymer using a cutting device for producing a superabsorbent resin can cut the hydrogel polymer to a millimeter size.

The truncated hydrogel polymer may undergo a hot air drying step (S4) and a crushing step (S5).

The hot air drying step (S3) can be performed in a non-limiting example within a range of from about 20 minutes to about 40 minutes at a temperature of about 150 DEG C or higher to about 200 DEG C or lower.

The pulverization step (S4) can produce dried hydrogel polymers in micro-size. The pulverization step (S4) may further include a step of pulverizing the dried hydrous gel polymer and then screening particles having an average particle diameter of 150 mu m or more to 850 mu m or less.

The method for producing a superabsorbent resin may further include a surface cross-linking agent mixing step (S6) for mixing the hydrogel polymer cut with micro-size with a surface cross-linking agent.

In a non-limiting example, the surface cross-linking agent may include ethylene glycol diglycidyl ether, ethylene carbonate, water, ethanol, and the like. However, it is not limited to this.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: pipe pipe
11: inlet, 12: outlet, 13: hollow
21: rotary blade, 22: rotary shaft
30: Plate
TH: Through hole
40: rotating blade
S1: Monomer composition preparation step
S11: first mixing step, S12: second mixing step
S2: Step of producing hydrogel polymer
S21: polymerization reaction step, S22: first cutting step
S3: second cutting step
S4: hot air drying step
S5: crushing step
S6: Surface cross-linking agent mixing step

Claims (20)

A pipe having a diameter larger than a diameter of the discharge port;
A rotating blade disposed in the tube pipe;
A plate disposed at one side of the pipe pipe and including a plurality of through holes; And
A rotating blade disposed between the tube pipe and the plate;
And a cutting device for cutting the super absorbent resin. The method according to claim 1,
And the diameter of the pipe pipe gradually decreases from the inlet to the outlet. 3. The method of claim 2,
And the diameter of the pipe pipe decreases linearly from the inlet to the outlet. The method according to claim 1,
Further comprising a plurality of cutting grooves formed on an inner wall of the pipe pipe and arranged periodically along a longitudinal direction of the pipe pipe. The method according to claim 1,
Wherein each of the plurality of through holes has a diameter larger than that of the discharge portion, and the inlet portion is disposed closer to the discharge port of the pipe pipe than the discharge portion. The method according to claim 1,
Wherein each of the plurality of through holes gradually decreases in diameter from the inlet to the outlet, and the inlet is disposed closer to the outlet of the tube than the outlet. The method according to claim 6,
Wherein each of the plurality of through holes is linearly reduced in diameter from the inlet to the outlet. A pipe having a rotating blade disposed in the hollow portion;
A plate disposed at one side of the pipe pipe and including a plurality of through holes having a diameter larger than that of the discharge portion; And
A rotating blade disposed between the tube pipe and the plate;
And a cutting device for cutting the super absorbent resin. 9. The method of claim 8,
Wherein each of the plurality of through holes gradually decreases in diameter from the inlet to the outlet, and the inlet is disposed closer to the outlet of the tube than the outlet. 10. The method of claim 9,
Wherein each of the plurality of through holes is linearly reduced in diameter from the inlet to the outlet. A monomer composition comprising a hydrophilic monomer, a crosslinking agent and a polymerization initiator;
A hydrogel polymer preparation step of the monomer composition; And
A plate having a diameter larger than the diameter of the discharge port, a rotating blade disposed in the pipe pipe, a plate disposed at one side of the pipe pipe and including a plurality of through holes, A hydrogel polymer cutting step of cutting the hydrogel polymer using a cutting device comprising a rotating blade disposed between the plates;
Absorbent resin. 12. The method of claim 11,
Wherein the hydrogel polymer is cut using a cutting device in which the diameter of the pipe pipe gradually decreases from the inlet to the outlet. 13. The method of claim 12,
Wherein the hydrogel polymer is cut using a cutting apparatus in which the diameter of the pipe pipe is linearly decreased from the inlet to the outlet. 12. The method of claim 11,
And cutting the hydrogel polymer by using a cutting device formed on an inner wall of the pipe pipe and further including a plurality of cutting grooves periodically arranged along a longitudinal direction of the pipe pipe. 12. The method of claim 11,
Wherein each of the plurality of through holes is formed by cutting a hydrogel polymer using a cutting device including a plate having a diameter larger than a diameter of the inlet portion and having a diameter that is closer to the outlet of the tube pipe than the outlet portion. By weight based on the total weight of the composition. 12. The method of claim 11,
Wherein each of the plurality of through holes is gradually reduced in diameter from the inlet to the outlet and the inlet has a plate disposed closer to the outlet of the tube than the outlet, A method of producing a superabsorbent resin to be cut. 17. The method of claim 16,
Wherein a diameter of each of the plurality of through holes decreases linearly from the inlet portion to the outlet portion. A monomer composition comprising a hydrophilic monomer, a crosslinking agent and a polymerization initiator;
A hydrogel polymer preparation step of the monomer composition; And
A plate having a rotating blade disposed in the hollow portion, a plate disposed on one side of the pipe pipe and having a plurality of through holes having a diameter larger than the diameter of the discharge portion, A hydrogel polymer cutting step of cutting the hydrogel polymer using a cutting device including a rotating blade disposed between the hydrogel gel polymer and the rotating gel blade;
Absorbent resin. 19. The method of claim 18,
Wherein each of the plurality of through holes gradually decreases in diameter from the inlet to the outlet and the inlet cuts the hydrogel polymer using a cutting device including a plate disposed closer to the tube than the outlet A method for producing a superabsorbent resin. 20. The method of claim 19,
Wherein the hydrogel polymer is cut using a cutting device in which the diameter of each of the plurality of through holes decreases linearly from the inlet portion to the outlet portion.

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