JP2000144194A - Production of detergent component admixture and production of granular detergent using the admixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing both an admixture and a granular detergent, capable of not causing reduction in solubility resulting from defective kneading and excessive kneading without being affected by the variation in a detergent composition and a raw material lot, and a method suitable for producing a granular detergent by using a nonionic surfactant as a main active ingredient. SOLUTION: In producing an admixture of detergent components by continuously supplying the detergent components to a blender having stirring blades, the stirring blades having (a) a function of transporting the detergent composition from a feed opening of the blender in the direction of an outlet opening, (b) a function of providing the detergent components with compression and (c) a function of kneading the detergent components are successively arranged from the feed opening of the blender toward the outlet opening to produce the detergent component admixture by continuous kneading.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a kneaded detergent component using a kneading machine by devising a structure of a stirring blade.
And a method for producing a granular detergent using the same.

[0002]

2. Description of the Related Art Using a kneader, a detergent powder raw material and a nonionic surfactant or an aqueous solution thereof as a binder, or an aqueous solution of an anionic surfactant, water, etc. are kneaded, and these are kneaded to form a detergent component. It has been conventionally known to produce a Japanese product, or to produce a granular detergent by extruding and granulating the kneaded product. However, in the conventional production method using a kneader, there is a problem that the quality of the product is easily affected by a change in the detergent composition and the lot of the raw material, and there is a problem of poor kneading and a decrease in the solubility of the product. The following are reported as production techniques using a conventional kneading machine, but none of them suggest the technical idea of the present invention.

[0003] Japanese Patent Application Laid-Open No. 61-118500 discloses a method of continuously kneading detergent raw materials by controlling the internal pressure of a kneader to 0.01 to 5 kg / cm ² · G. Although a continuous kneader self-cleaning type S-1 is used, there is no description of a paddle pattern. That is, there is no description about providing three functional zones of the present invention.

Japanese Patent Application Laid-Open No. 9-87691 discloses an example of producing a nonionic detergent by a continuous kneader (Kurimoto Iron Works KRC-2 type), but does not describe a paddle pattern. That is, there is no description about arranging three functional zones as in the present invention as described above.

[0005] Published by the Japan Patent Office, "Known and used technology collection (powder detergent for clothing)" 75: It is described that efficient kneading is possible by kneading and formation of a transport zone by a combination in which the direction of the paddle of the continuous kneader is changed, but there is no description of a specific paddle pattern, as in the present invention. There is no description of the arrangement of the three functional zones.

[0006] In the catalog of continuous kneaders manufactured by Kurimoto Iron Works, there is a description of a paddle pattern. However, unlike the present invention, three functional zones are not formed as in the present invention, and the present invention is not used. Does not work like that. Further, regarding the continuous kneader, JP-A-63-242334,
JP-A-6-23251, JP-A-6-23252, and JP-A-7-265679 each describe the shape of a paddle and are not directly related to the present invention.

[0007]

The present invention relates to a detergent composition,
An object of the present invention is to provide a method for producing a kneaded material which is not affected by a raw material lot variation and does not cause poor kneading or a decrease in solubility due to excessive kneading. According to the present inventors, rather than kneading the detergent components at once, transport, compaction, by kneading step by step kneading, kneaded material of good quality is performed efficiently kneading It has been found that a granular detergent can be obtained. Due to the thixotropic properties of the detergent composition, if a sudden shearing force is applied at once without providing a consolidation step, it takes an excessive amount of time to be softened, and excessive power is applied. , Lowering the ability.
In addition, it has been found that such an excessive application of power causes a decrease in solubility when detergent particles are used.

Since nonionic surfactants have much lower binder power than anionic surfactants, nonionic surfactants are used as main binders or as main active ingredients to produce solid detergents having good shape retention. It was difficult to do. Poor shape retention causes the following problems. -Solid material has poor density and is bulky.・ Particle size control such as increase of fine powder during crushing is not possible. -The fluidity of detergent particles obtained by crushing and granulation is poor. Accordingly, it is another object of the present invention to provide a production method suitable for producing a kneaded product and a granular detergent containing a nonionic surfactant as a main binder component or a main active component.

[0009]

According to the method of the present invention for producing a kneaded detergent component, the detergent component is continuously supplied to a kneading machine having stirring blades, and the kneading of the kneaded detergent component is carried out. It is characterized in that stirring blades having the following functions (a) to (c) are sequentially arranged in the machine from the supply port to the discharge port side of the mixer and kneaded continuously. (A) a function of transporting a detergent component from a supply port to a discharge port of a kneading machine; (b) a function of imparting consolidation to the detergent component; and (c) a function of kneading the detergent component.

The kneaded product is provided with two parallel rotating shafts in a cylindrical casing having a cross section where two circles having the same diameter and having a supply port at one end and a discharge port at the other end cross each other. A continuous kneader is used in which a group of flat paddles, helical paddles, and reverse helical paddles is arranged on the rotating shaft in the order of the following formula (I) from the supply port to the discharge port. By doing so, it can be suitably manufactured.

X2 · (X2 · Y1) n · (X1 · Y1) m · (X1 · Y2) p (I) (X1: weak feed blade group X2: strong feed blade group Y1: weak return blade group Y2 : Strong return blade group n: an integer of 0 or more m: an integer of 1 or more p: an integer of 1 or more). Further, the method for producing a granular detergent of the present invention is characterized in that the above-described detergent component kneaded product is extruded and then produced by crushing and granulating.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The continuous kneader used in the present invention is one in which a number of stirring blades (paddles) are integrated into two parallel rotating shafts, and the rotating shafts rotate in the same direction. The pair of left and right paddles incorporated in the shaft are set out of phase by 90 degrees, and the pair of paddles is preferably a continuous kneader having a self-cleaning action, in which one end always rotates so that the other end rubs the other end. Used for A screw is arranged near the supply port of the kneader to send the supplied detergent component to the processing zone of the present invention. The processing zone of the present invention comprises the following (a) transport zone, (b) consolidation zone, and (c) kneading zone processing zone formed from various paddles arranged in the direction of the discharge port following the screw. It is formed. Although the number of paddles used in the processing zone is not particularly limited, for example, 20 to 30 paddles are incorporated. Next, the configuration of each processing zone and the blade group used therein will be described.

(A) A transport zone having a function of transporting the detergent component from the supply port of the kneader to the discharge port. -Consists of a strong feed blade group. (B) a consolidation zone having the function of consolidating the detergent components. A configuration in which a weak return blade group is arranged at the subsequent stage of a weak feed blade group (a plurality of this can be repeated). -A configuration in which a weak return blade group is arranged after the strong feed blade group (multiple repetitions of this are also possible). (C) a kneading zone having a function of kneading detergent components. A configuration in which a strong return blade group is arranged after a weak feed blade group (a plurality of repetition of this is also possible).

In the present invention, a detergent component as a raw material is guided to a treatment zone by a screw, and this treatment zone is constituted by a transport zone, a consolidation zone, and a kneading zone, and the transport, consolidation, and kneading are performed stepwise. An efficient kneaded product is obtained, and a granular detergent of good quality is obtained. Due to the thixotropic property of the detergent raw material composition, if a sudden shearing force is applied at once without providing a consolidation step, it takes time to soften and excessive force will be applied, and the power will increase more than necessary. The ability is reduced. Occasionally, it causes kneading failure. On the other hand, the application of such excessive power causes a decrease in solubility when finally formed into detergent particles. Each processing zone is formed by a combination of paddles. The paddles preferably used in the present invention are as follows.

(1) Flat Paddle (F) The plane perpendicular to the rotation axis is a plane (cross section) similar to a convex lens (see FIG. 1). When the pair of left and right paddles is rotated, one end always rubs the other. The ratio of the minor axis to the major axis is such that minor axis / major axis = 1/1 to 1
1/3 is preferred. The surface in the direction of the rotation axis is a curved surface orthogonal to a surface perpendicular to the rotation axis. The width of the paddle in the rotation axis direction is preferably 1/6 to 1/2 of the major axis, and 1/4 to 1
/ 3 is more preferred.

(2) Helical paddle (H) The shape of the plane perpendicular to the rotation axis is similar to a convex lens similar to the flat paddle (F). The surface in the rotation axis direction is helically twisted so as to push the contents from the supply port of the kneading machine toward the discharge port by rotation of the paddle, and the width in the rotation axis direction is preferably 1/10 or less of the helical pitch. And
Preferably it is 1/10 to 1/30. Further, the width in the rotation axis direction is preferably 1/6 to 1/2 of the long diameter, and 1/4 to
One third is more preferred. (3) Reverse helical paddle (RH) This is a blade having a twisted surface in the opposite direction to the helical paddle (H). Helical paddle (H) for setting the width in the rotation axis direction
Is the same as Further, the pitch of the screw (S) is preferably 1/2 to 1/3 of the major axis.

An example of the paddle arrangement in each feed mode will be described below. Paddle arrangement of weak feed (X1):-Two or more helical paddles (H) are arranged in the direction of the discharge port while being shifted by 90 degrees in the rotation direction of the rotating shaft (FIG. 3)
(See (a)). H90 ° indicates that H is a helical paddle, and 90 ° indicates that the inclination angle between the paddles is 90 °. The numbers 1, 2, 3, and 4 (see also FIG. 2) indicate that 2 is 4 for the reference paddle 1.
5 degrees, 3 indicate 90 degrees, and 4 indicates 135 degrees, which are sequentially inclined by 45 degrees. When the paddle is further tilted by 45 degrees from 4, the paddle returns to the original 1 state. -Two or more flat paddles (F) and helical paddles (H) are alternately arranged in the discharge port direction while being shifted by 90 degrees in the rotation direction of the rotation shaft (see FIG. 3B).

Paddle arrangement of strong feed (X2): (trajectory of blade tip becomes feed spiral) ・ Flat paddle (F) or helical paddle (H) is rotated 45 degrees in the direction opposite to the rotation direction of the rotating shaft. Two or more sheets are arranged in the discharge port direction while being shifted (see FIG. 2 (a) flat paddle, (b) helical paddle). -Two or more flat paddles (F) and helical paddles (H) are alternately arranged in the direction of the discharge port by being shifted by 45 degrees in the direction opposite to the rotation direction of the rotating shaft (see FIG. 2 (c)).

Arrangement of paddles for weak return (Y1): At least two helical paddles (H) are arranged in the direction of the discharge port while being shifted by 45 degrees in the direction of rotation of the rotating shaft (FIG. 5).
(See (a)). -Two or more flat paddles (F) and helical paddles (H) are alternately arranged in the direction of the discharge port while being shifted by 45 degrees in the rotation direction of the rotating shaft (see FIG. 5B). -Two or more reverse helical paddles (RH) are arranged in the exit direction while being shifted by 90 degrees in the rotation direction of the rotation shaft (see FIG. 4 (c)).

Arrangement of paddles for strong return (Y2): (the trajectory of the tip of the blade becomes a return spiral) • Two or more flat paddles (F) in the discharge port direction while shifting the flat paddle (F) by 45 degrees in the rotation direction of the rotation shaft Place (Fig. 4
(See (a)). -A reverse helical paddle (RH) is disposed at a stage subsequent to the flat paddle (F) in a direction opposite to the rotation direction of the rotating shaft by 45 degrees in the outlet direction (see FIG. 4B).

The preferred paddle pattern in the present invention is:
It is shown in Equation 3 below.

X2 · (X2 · Y1) n · (X1 · Y1) m · (X1 · Y2) p (I) (X1: weak feed blade group X2: strong feed blade group Y1: weak return blade group Y2 : Strong return blade group n: an integer of 0 or more m: an integer of 1 or more p: an integer of 1 or more). n is not limited, but is preferably 0 or 1. Further, it is preferable that m = 1 to 3 and p = 1 to 2.

As the detergent component of the present invention, ordinary detergent components are used. That is, surfactants such as anionic surfactants and nonionic surfactants, chelated builders, and other additives are used. Examples of the anionic surfactant include linear or branched alkyl (average carbon chain length of 8 to 18) benzene sulfonate, long chain alkyl (average carbon chain length of 10 to 20) sulfonate, and long chain olefin (average carbon chain length). Long 10-20) sulfonate, long chain monoalkyl (average carbon chain length 10-20) sulfate ester salt, polyoxyethylene (average degree of polymerization 1-10) long chain alkyl (average carbon chain length 10-20) ether Sulfate esters,
Polyoxyethylene (average degree of polymerization 3 to 30) alkyl (average carbon chain length 6 to 12) phenyl ether sulfate, α-sulfofatty acid alkyl ester salt (average carbon chain length of fatty acid residue 12 to 20), long chain Monoalkyl, dialkyl or sesalkyl phosphates, polyoxyethylene monoalkyl, dialkyl or sesquialkyl phosphates, soaps and the like are used. These anionic surfactants can be used as alkali metal salts such as sodium and potassium, amine salts, ammonium salts and the like. Further, the above-mentioned surfactants can be used as one kind or as a mixture of two or more kinds.

Preferred nonionic surfactants include, for example, the following. An alkylene oxide having 2 to 4 carbon atoms is added to an aliphatic alcohol having 6 to 22 carbon atoms, preferably 8 to 18 carbon atoms, preferably 3 to 3 carbon atoms on average.
0 mol, preferably 5 to 20 mol, of a polyoxyalkylene alkyl (or alkenyl) ether added. Among them, polyoxyethylene alkyl (or alkenyl) ether and polyoxyethylene polyoxypropylene alkyl (or alkenyl) ether are preferable. As the aliphatic alcohol used here, the first
A secondary alcohol or a secondary alcohol is used. Further, the alkyl group may have a branched chain. As preferred aliphatic alcohols, primary alcohols are used.

Polyoxyethylene alkyl (or alkenyl) phenyl ether. For example, a fatty acid alkyl ester alkoxylate represented by the following general formula (I) in which an alkylene oxide is added between ester bonds of a long-chain fatty acid alkyl ester.

Embedded image R ¹ CO (OA) nOR ² ... (I) (R ¹ CO: a fatty acid residue having 6 to 22 carbon atoms, preferably 8 to 18 carbon atoms OA: 2 to 4 carbon atoms such as ethylene oxide and propylene oxide; Preferably 2 to 3 additional units of alkylene oxide n: average number of moles of alkylene oxide added, generally 3 to 30, preferably 5 to 20 R ² : having a substituent having 1 to 3 carbon atoms Lower alkyl group)

Polyoxyethylene sorbitan fatty acid ester. Polyoxyethylene sorbite fatty acid ester. Polyoxyethylene fatty acid esters. Polyoxyethylene hydrogenated castor oil. Glycerin fatty acid esters. Fatty acid alkanolamides.

Among the above nonionic surfactants, polyoxyethylene alkyl (or alkenyl) ether, polyoxyethylene polyoxypropylene alkyl (or alkenyl) ether and fatty acid methyl ester having a melting point of 40 ° C. or less and an HLB of 9-16. Fatty acid methyl ester ethoxylate in which ethylene oxide is added to fatty acid, and fatty acid methyl ester ethoxypropoxylate in which ethylene oxide and propylene oxide are added to fatty acid methyl ester are preferably used. Further, these nonionic surfactants may be used as a mixture.

The following are examples of other surfactants. 1. Alkylamine oxide represented by the following general formula (II)

Embedded image (Where R_ThreeIs an alkyl group having 10 to 20 carbon atoms or alk
A phenyl group;_Four, R_FiveIs an alkyl group having 1 to 3 carbon atoms
Is)

2. The general formula (II)
Betaine-type amphoteric agents represented by (I), (IV) and (V)

Embedded image (Wherein, R ₆ is an alkyl or alkenyl or β-hydroxyalkyl or β-hydroxyalkenyl group having 8 to 24 carbon atoms; R ₇ is an alkyl group having 1 to 4 carbon atoms;
₈ represents an alkyl or hydroxyalkyl group having 1 to 6 carbon atoms)

[0028]

Embedded image (In the formula, R ₆ and R ₈ are as described above. N ₂ represents an integer of 1 to 20.)

[0029]

Embedded image (Wherein, R ₆ and R ₈ are as described above. R ₉ has 2 to 5 carbon atoms.
Represents a carboxyalkyl or hydroxyalkyl group. )

Other detergent raw materials include the following, which are used as a powder or liquid raw material of a kneaded product, or are added later when a granular detergent is produced. These detergent components include zeolite, inorganic builders such as sodium tripolyphosphate and sodium pyrophosphate; sodium citrate, sodium ethylenediaminetetraacetate, nitrilotriacetate, sodium polyacrylate, sodium acrylate-anhydrous sodium maleate. Organic builders such as polymers, polyacetal carboxylate, sodium hydroxyiminodisuccinate; sodium carbonate,
Alkali builders such as potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium silicate, and crystalline silicate; anti-soil repellents such as carboxymethyl cellulose and polyethylene glycol; para-toluene sulfonate, toluene sulfonate, xylene sulfonate; Viscosity modifiers such as urea; softeners such as quaternary ammonium salts and bentonate; reducing agents such as neutral inorganic salts such as sodium sulfate, sodium sulfite, and sodium bisulfite;
Bleaching agents such as sodium percarbonate and sodium perborate,
Examples include bleach activators such as ethylenediaminetetraacetate and sodium octanoyloxybenzenesulfonate, fluorescent brighteners, fragrances, enzymes such as proteases, lipases, and cellulases, dyes, and white carbon.

Water, an anionic surfactant aqueous solution, a nonionic surfactant, a nonionic surfactant aqueous solution, or the like is used as a binder for kneading and kneading. Nonionic surfactants and nonionic surfactant aqueous solutions are used. It is suitable. In the granular detergent of the present invention, an anionic surfactant can be used as a main active ingredient, or a nonionic surfactant can be used as a main active ingredient. In a granular detergent containing a nonionic surfactant as a main active ingredient, it is preferable to mix 5 to 30% by weight of the nonionic surfactant, and preferably 10 to 25% by weight.

In the production of a granular detergent containing a nonionic surfactant as a main active ingredient, the kneading energy of a kneading machine is determined as follows.
It is suitable to set it to 1 to 10 kWh / t, preferably 1.2 to 9 kWh / t, more preferably 1.5 to 8 kWh / t. If the kneading energy is too low, the shape retention and fluidity deteriorate. Further, the elasticity of the obtained solid detergent becomes weak, and when the solid detergent is subjected to secondary processing by crushing or the like, device adhesion occurs. On the other hand, if the kneading energy is set too high, the solid detergent is softened and the tackiness is increased, and when the solid detergent is subjected to secondary processing by crushing or the like, device adhesion occurs. In addition, the solubility of the obtained kneaded material or granular detergent is deteriorated, and the fluidity and solidification of the secondary processed product such as the granular detergent are also deteriorated. In particular, the above points are remarkable in the production of a granular detergent containing a nonionic surfactant as a main active ingredient. The kneaded product is usually formed into a noodle shape or a pellet shape by an extruder in order to obtain a size that can be crushed. The formed kneaded material can be subjected to crushing and granulation such as pulverization to obtain a granular detergent having a desired particle size. In particular, in the case of a noodle shape, a granular detergent can be obtained only by cutting.

[0033]

According to the present invention, it is possible to produce a kneaded product and a granular detergent which are not affected by fluctuations in the detergent composition and the raw material lot and which do not cause poor kneading or decrease in solubility due to excessive kneading. . Further, the present invention is suitable for producing a granular detergent using a nonionic surfactant as a main active ingredient.

[0034]

EXAMPLES <Measurement method of retention time in kneader> The tracer dye was charged into the kneader together with the raw materials, and the time at which coloring became intense was determined as the retention time. <Method for calculating required power per unit raw material> The required power per unit raw material [kW · h / t] is calculated based on the power [kW] spent for kneading and the raw material supply amount per hour [t / h]. Divided by. <Uniformity of kneaded product> The appearance of the kneaded product was visually observed. ：: Uniform 小 さ な: Small powder agglomerates observed ×: Powder present

<Type retention test> Three types of solid detergents (diameter 2
0mm x 5mm thick disc, 15.7mm x 10mm x
10 mm rectangular parallelepiped, 14.4 mm diameter sphere)
Each of the three was placed in a 1 L stainless steel cylindrical container and vigorously shaken for 3 minutes. And the weight reduction rate after shaking with respect to before shaking of each molded object was measured. It was determined that the smaller the value, the higher the shape retention at the time of collision.

<Solidification test> Coated pole paper (basis weight: 350 g / m ² ), wax sand paper (basis weight:
30 g / mm ² ), Kraft pulp paper (70 g / m ² )
15cm long x 9.3c wide using three layers of paper
A box measuring mx 18.5 cm in height was prepared. 1.2 kg of a sample is put in this box, and stored in a constant temperature and humidity room at 50 ° C. and 85% RH for 30 days. The detergent is carefully transferred onto a JIS standard 4 mesh sieve, and the sieve is gently shaken. The above weight and the total weight were determined, and the solidification was calculated from the following equation (4).

## EQU4 ## Solidification (%) = {weight on sieve (g) / total weight (g)} × 100

<Solubility Test> 5 ° C. in a 500 ml beaker
Of tap water, 5 g of the detergent composition was added, and the mixture was stirred for 5 minutes. Next, the detergent particles remaining undissolved were taken out on a nylon cloth, dried at 105 ° C. for 2 hours, and the dissolution residue represented by the following formula 5 was calculated, and the solubility was evaluated based on the following criteria.

## EQU5 ## Dissolved residue (%) = {(dissolved residue of dried product at 105 ° C. for 2 hours) / 5 g} × 100 ：: 0% ≦ dissolved residue <1% ○: 1% ≦ dissolved residue <5% △ : 5% ≦ dissolution residue <10% ×: 10% ≦ dissolution residue% <Fluidity test> 45 ° C. based on JIS Z2502
The angle of repose at was measured by the discharge method.

Examples 1-3 The paddle conditions used in the following Examples and Comparative Examples are as follows. Paddle major axis = 100 mm Minor axis / major axis = 0.44 Width / major axis = 0.19 (gap between paddle and paddle = 1 mm) Clearance between paddle and inner wall surface = 1 mm Helical pitch / major axis = 3.6 (width is helical 1/18 of the pitch)

As a raw material for kneading, a composition containing a surfactant was spray-dried using hot air at 260 ° C., and 2.2 parts by weight of powder zeolite as a pure component was mixed in a tower. A dry powder having the composition shown in Table 1 was obtained. 5 parts by weight of this dry powder, 8.1 parts by weight of a nonionic surfactant aqueous solution (a nonionic surfactant obtained by adding 12 moles of ethylene oxide to a C13 straight chain higher alcohol, water content: 16%) and 1.0 part by weight of water A continuous kneader (KRC Kneader S4, manufactured by Kurimoto Iron Works Co., Ltd., with a paddle of the pattern shown in FIGS. 6 and 7) with a total spindle speed of 170 k.
It was added continuously at a rate of g / h to obtain a kneaded product. The temperature of the kneaded material immediately after coming out of the kneader was 45 to 50 ° C. Table 2 shows the power required for kneading. This kneaded product is extruded into a 10 mm diameter noodle shape with a pelletizer,
Next, 100 parts by weight of the obtained solid detergent was put into a crushing granulator (Fitzmill manufactured by Hosokawa Micron Corp.) together with 10 parts by weight of finely pulverized sodium carbonate, and crushing and granulation was performed. In a mixing drum, 2.4 parts by weight of powdered zeolite and 1.0 part by weight of enzyme are mixed together and mixed with a nonionic surfactant aqueous solution (a nonionic surfactant obtained by adding 12 mol of ethylene oxide to a C13 linear higher alcohol, 1.0 part by weight of water (16%) and 0.5 part by weight of fragrance were sprayed to obtain a granular detergent. Table 2 shows the properties and solubility of the granular detergent.

[0040]

Table 1: Dry powder composition LAS-K * ² 15.4 parts by weight * ¹ AOS-K * ³ 12.3 parts by weight Soap 3.3 parts by weight Sodium silicate 5.4 parts by weight Zeolite (as pure component) 25.6 parts by weight Potassium carbonate 14.8 parts by weight Sodium carbonate 5.0 parts by weight Fluorescent agent * ⁴ 0.1 parts by weight Other trace components * ⁵ 2.0 parts by weight Water (other than water of crystallization of zeolite) 7.0 parts by weight * 1 The blending amount of each composition is based on 100 parts by weight of the total amount of the kneaded product. Expressed in parts by weight at the time. * 2 Potassium linear alkylbenzene sulfonate * 3 Potassium α-olefin sulfonate * 4 Tinopearl CBS manufactured by Ciba-Geigy * 5 Surfactant raw material oil such as alkylbenzene, inorganic impurities such as sodium carbonate, zeolite crystal water, etc.

COMPARATIVE EXAMPLE 1 In order to obtain a kneaded product having the same composition as in Example 1, a continuous kneader (KRC Kneader S4 type, manufactured by Kurimoto Iron Works, Ltd.) having a paddle having the pattern shown in FIG.
It was added continuously at a rate of g / h to obtain a kneaded product. Table 2 shows the power required for kneading. Next, a granular detergent was produced in the same manner as in Example 1. Table 2 shows the properties and solubility of the obtained granular detergent.

Comparative Example 2 In order to obtain a kneaded product having the same composition as in Example 1, a continuous kneader having paddles having the pattern shown in FIG.
KRC Kneader S4 type manufactured by Kurimoto Iron Works) 17 in total
When it was continuously added at a rate of 0 kg / h, it became powdery and could not be kneaded. Table 2 shows the power required for kneading and the solubility of the powdery product.

[0043]

[Table 2] Table 2: Manufacturing conditions and properties of detergent particles (numerical unit of each component: kg / h) Example Comparison Example 1 2 3 1 2 Paddle pattern ABCDG Residence time (sec) 30 35 35 35 5 Kneading Energy (kWh / kg) 2.0 2.9 2.8 6.5 0.2 Uniformity of kneaded material ○ ○ ○ ○ ○ Bulk density (g / cm ³ ) 0.82 0.84 0.84 0.86 − Average particle size (μm) 500 500 500 500 − Solubility ◎ ◎ ◎ △ Measurement not possible

Examples 4 to 6 Nonionic surfactants and other components shown in Table 3 were added to a continuous kneader having a paddle of each pattern (KRC Kneader S4 type, manufactured by Kurimoto Tekkosho Co., Ltd.) in a total amount of 170 kg / kg.
After continuously adding and kneading at a speed of h, a nonionic surfactant-containing solid detergent was obtained. Next, the obtained solid detergent is put into a crushing granulator (Fitzmill manufactured by Hosokawa Micron Co., Ltd.) together with 10 parts by weight of P-type zeolite as a crushing aid, and crushing and granulating is performed. The mixture was transferred and mixed with 3 parts by weight of P-type zeolite, 0.2 parts by weight of fragrance and 1 part by weight of enzyme to obtain nonionic detergent particles. Table 3 shows the power required for kneading and the properties and solubility of the obtained granular detergent.

Comparative Example 3 In order to obtain a kneaded product having the same composition as in Example 6, a continuous kneader having a paddle having a pattern shown in Comparative Example 3 in Table 3 (KRC Kneader S4 type, manufactured by Kurimoto Iron Works Co., Ltd.) When added continuously at a rate of 170 kg / h in total, powder was formed and could not be kneaded. Raw materials used: Nonionic surfactant A: C ₁₈ H ₃₇ O (C ₂ H ₄ ) ₆ H Nonionic surfactant B: C ₁₂ H ₂₅ O (C ₂ H ₄ O) ₈ (C ₃
H ₆ O) ₃ H nonionic surfactant C: C ₁₂ H ₂₅ CO (OC ₂ H ₄ ) ₈ O
CH ₃

[0046]

Table 3: Composition and properties of nonionic detergent particles Example Comparative Example 4 5 6 3 Composition% Nonionic surfactant 12 20 24 24 (Type) ABCC P-type zeolite (when kneading) 20 20 20 20 Sodium carbonate 33 25 21 21 Sodium sulfite 2 2 2 2 Montmorillonite 7 7 7 7 Fine particle silica 4 4 4 4 Fluorescent agent 0.8 0.8 0.8 0.8 Water 7 7 7 7 Paddle pattern ABEG residence time (sec) 30 35 45 5 Kneading energy ( kWh / kg) 1.8 2.8 6.5 0.2 Uniformity of the kneaded material ○ ○ ○ − Retention (%) 3 0.8 0.5 − Bulk density (g / cm ³ ) 0.82 0.86 0.89 − Solubility ◎ ◎ ◎ − Fluidity (angle of repose) 45 40 40 − Solidification ◎ ◎ ◎ − Crusher adhered Slight None None −

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a paddle used in the present invention.

FIG. 2 is a perspective view showing an embodiment of a paddle arrangement according to the present invention.

FIG. 3 is a perspective view showing an embodiment of a paddle arrangement according to the present invention.

FIG. 4 is a perspective view showing an embodiment of a paddle arrangement according to the present invention.

FIG. 5 is a perspective view showing an embodiment of a paddle arrangement according to the present invention.

FIG. 6 is a perspective view showing a paddle pattern according to the embodiment of the present invention.

FIG. 7 is a perspective view showing a paddle pattern in the embodiment of the present invention.

FIG. 8 is a perspective view showing a paddle pattern in the embodiment of the present invention.

FIG. 9 is a perspective view showing a comparative example of a paddle arrangement according to the present invention.

FIG. 10 is a perspective view showing an embodiment of a paddle arrangement according to the present invention.

FIG. 11 is a perspective view showing an embodiment of a paddle arrangement according to the present invention.

FIG. 12 is a perspective view showing a comparative example of a paddle arrangement according to the present invention.

[Explanation of symbols]

 S Screw F Flapper Paddle H Helical Paddle RH Repurse Helical Paddle

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] January 7, 1999 (1999.1.7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

X2 · (X2 · Y1) n · (X1 · Y1) m · (X1 · Y2) p (I) (X1: weak feed blade group X2: strong feed blade group Y1: weak return blade group Y2 : Strong return blade group n: integer of 0 or more m: integer of 1 or more p : integer of 1 or more)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomoki Kubo 1-3-7 Honjo, Sumida-ku, Tokyo Inside Lion Corporation (72) Inventor Isao Nishimura 1-3-7 Honjo, Sumida-ku, Tokyo F-term in Lion Corporation (reference) 4H003 AB03 AB15 AB19 CA15 CA20 EA15 EA16 EA28

Claims (4)

[Claims] When a detergent component is continuously supplied to a kneading machine having a stirring blade to produce a kneaded product of the detergent component, the stirring blade having the following functions (a) to (c) is provided in the kneading machine. Are sequentially arranged from the supply port to the discharge port side of the kneading machine and kneaded continuously to produce a kneaded product of detergent components. (A) a function of transporting a detergent component from a supply port to a discharge port of a kneader (b) a function of imparting consolidation to a detergent component (c) a function of kneading a detergent component 2. Two parallel rotating shafts are provided in a cylindrical casing having a cross section in which two circles having the same diameter and having a supply port at one end and a discharge port at the other end cross each other. A continuous kneader in which a blade group composed of a combination of a flat paddle, a helical paddle, and a reverse helical paddle is arranged in the order of Formula (I) below from the supply port to the discharge port in the direction of the formula (I). A method for producing the detergent component kneaded product according to the above. X2 · (X2 · Y1) n · (X1 · Y1) m · (X1 · Y2) p (I) (X1: weak feed blade group X2: strong feed blade group Y1: weak return blade group Y2 : Strong return blade group n: integer of 0 or more m: integer of 1 or more n: integer of 1 or more) 3. A blade having a structure in which two or more helical paddles are arranged in the direction of the discharge port while shifting the helical paddle by 90 degrees in the direction of rotation of the rotating shaft, wherein the weak feed blade group (X1) has at least one of the following structures. A group of blades having a configuration in which two or more flat paddles and helical paddles are alternately arranged in the direction of the discharge port while being shifted by 90 degrees in the rotation direction of the rotation shaft. A strong feed blade group (X2) is composed of at least one of the following configurations.・ While shifting the flat paddle or helical paddle by 45 degrees in the direction opposite to the rotation direction of the rotating shaft,
A blade group having a configuration in which two or more flat paddles and helical paddles are alternately arranged in a direction opposite to the rotation direction of the rotating shaft by 45 degrees in the direction of the discharge port A weak return blade group ( Y1) has at least one of the following configurations: a blade group having a configuration in which two or more helical paddles are arranged in the direction of the discharge port while being shifted by 45 degrees in the rotation direction of the rotary shaft; A blade group having a configuration in which two or more blades are alternately arranged in the direction of the discharge port by being shifted by 45 degrees in the direction of rotation of the blade. A configuration in which two or more reverse helical paddles are arranged in the direction of the discharge port while being shifted by 90 degrees in the direction of rotation of the rotating shaft. The method for producing a detergent component mixture according to claim 2, wherein the strong return blade group (Y2) has at least one of the following configurations. -A group of blades having a configuration in which two or more flat paddles are arranged in the direction of the discharge port while being shifted by 45 degrees in the rotation direction of the rotation shaft. A blade group having a configuration that is shifted toward the discharge port 4. A method for producing a granular detergent, comprising extruding the kneaded detergent component obtained in any one of claims 1 to 3, followed by crushing and granulating.