JPH093499A - Method for producing high bulk density detergent containing colored particles - Google Patents

Abstract

(57) [Summary] [Structure] Partially coloring the detergent particles on the belt conveyor by using 0.0001 to 1% by weight of the pigment to the detergent particles having a bulk density of 0.5 g / cc or more. A particle-containing high bulk density detergent is produced. [Effect] Not only can a high bulk density detergent containing colored particles with a beautiful appearance and good fluidity be produced by an extremely simple method, and safety such as prevention of accidental ingestion and detergent ingredients such as enzymes and bleaching agents can be mixed. There is an advantage that the standard of the degree can be obtained visually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a high bulk density detergent containing colored particles, having a beautiful appearance and good fluidity.

[0002]

2. Description of the Related Art Usually, a colored particle-containing detergent is produced by separately producing colored particles and mixing them with uncolored detergent particles. In this case, the manufacturing process becomes complicated because another step for manufacturing the colored particles is required.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for producing a high bulk density detergent containing colored particles by a very simple method. Furthermore, the density,
Visually check the degree of mixing in the production of high-bulk density detergents that are produced by powder-mixing some or most of the detergent component particles that are difficult to mix due to differences in particle size, particle shape, surface properties, blending amount, etc. It is also intended to obtain easily.

[0004]

The method for producing a high bulk density detergent containing colored particles according to the present invention uses 0.0001 to 1% by weight of a pigment with respect to detergent particles having a bulk density of 0.5 g / cc or more. And partially coloring the detergent particles on the belt conveyor.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The high bulk density detergent of the present invention has a bulk density of 0.5 g / cc or more, preferably 0.7 to 1.0 g / c.
c.

The amount of the pigment added is 0.
0001 to 1% by weight, preferably 0.001 to
It is 0.5% by weight, and more preferably 0.001 to 0.1% by weight. When the amount of the dye added is less than 0.0001% by weight, the appearance of the product is inferior, and when the amount added is more than 1% by weight, the liquidity of the detergent particles is increased and the fluidity of the detergent is significantly reduced during coloring.

As the pigment, those suitable for blending general detergents can be used. Acid Blue 140, Acid Green 40
And dyes such as Blue No. 404 and the like are preferable. It is preferable to use one kind or a mixture of two or more kinds of these dyes, and to dissolve or disperse them in a solvent to use as a dye solution at a concentration of 20 to 50% by weight. If this concentration exceeds 50% by weight, the pigment may be poorly dispersed and the spray nozzle may be clogged. The solvent is a nonionic surfactant having a melting point of 40 ° C. or lower, polyethylene glycol, propylene glycol,
It is preferable to use one kind or a mixture of two or more kinds of lower alcohol, water and the like.

As a coloring method, a dye solution is sprayed onto the surface of detergent particles on a belt conveyor in a detergent manufacturing process by using a pressure nozzle or a two-fluid nozzle to color all or part of the surface, Partially color the detergent particles. The amount of colored particles and the color strength can be arbitrarily adjusted by the belt speed of the belt conveyor, the concentration of the coloring liquid, and the spray area (height of the detergent particles and the nozzle, spray pressure, etc.).

The spraying width of the dye solution is preferably 80% or less, more preferably 60% or less, with respect to the total width of the detergent particles on the belt conveyor, and is colored with the detergent particles in the surface layer at the center of the belt conveyor. On the other hand, the peripheral portion remains uncolored. If it is 80% or more, the dye solution may be scattered to the portions where the detergent particles do not exist on both ends of the belt conveyor.

After the above-mentioned coloring step, the non-colored detergent particles and the colored detergent particles are separately conveyed on the belt conveyor in a coexisting state. However, if the product has a silo for temporary storage of products or intermediate products, it is not necessary to install a special mixer because the mixing is promoted at the time of loading and unloading the silo and connecting belts. However, it is more preferable to use a mixer such as a continuous rotary cylinder type or a windmill type mixer provided at the connecting portion of the belt.

The detergent particles on the belt conveyor have a bulk density of 0.
If it is 5 g / cc or more, its composition and manufacturing method are not particularly limited. Further, the detergent particles may be a mixture of the entire amount of the detergent composition or a part of the detergent composition. When it is a part of the detergent composition, the remaining raw materials can be mixed by a known method in the next step to obtain the final detergent composition. In this case, the partially colored particles allow the degree of mixing in the next mixing step to be easily and quickly determined visually or by instrumental measurement (color difference, whiteness, etc.).

As a detergent component to be added in the next step, a small amount of components such as an enzyme, a bleaching agent, a bleach activator and a softening agent is used as a detergent component which is particularly effective for judging the degree of mixing according to the present invention. There are cases.

[0013]

EFFECTS OF THE INVENTION According to the present invention, not only a highly bulky detergent containing colored particles having a beautiful appearance and good fluidity can be produced by an extremely simple method, but also safety such as accidental ingestion and detergent components, For example, there is an advantage that an index of the mixing degree of the enzyme, the bleaching agent, etc. can be visually obtained.

[0014]

Example: Bulk density 0.8 g / cc, average particle size 500 μ
When producing a high bulk density detergent of m with a production capacity of 4.0 t / hr, a detergent on the belt conveyor before entering the rotating cylindrical drum that performs zeolite coating and addition and mixing of perfume and enzyme through a granulation process. The pigment solution was sprayed on the particles under the following conditions to produce a colored particle-containing high bulk density detergent, and the product appearance and repose angle were evaluated according to the following evaluation methods.
The manufacturing conditions and the evaluation results are shown together in Table 3 below. (1) Composition and bulk density of detergent particles on a belt conveyor (as in Table 1 below).

[0015]

[Table 1] Table 1: Composition and bulk density composition (% by weight of product) Potassium α-olefin sulfonate 5% by weight Potassium linear alkylbenzene sulfonate 20% by weight α-Sulfo fatty acid methyl ester sodium 6% by weight Soap 4% by weight Polyoxyethylene alkyl ether 3% by weight (ethylene oxide 18 mol addition product) Zeolite * ¹ 20% by weight Potassium carbonate 6% by weight Sodium sulfite 1.5% by weight Fluorescent agent (Tinopearl CBS) 0.3% by weight Enzyme (Alcalase) * ² 0.7% by weight Perfume * ² 0.1% by weight Sodium carbonate Balanced water 6% by weight Bulk density: 0.72 g / cc * 1) Zeolite was added after 2% by weight and used for coating. * 2) Post addition

(2) Operating conditions of belt conveyor Full width: 30 cm Belt speed: 10 m / min. Detergent particle width: average 27 cm Detergent particle thickness: average 3.3 cm * ³ * 3) A slit was provided on the belt conveyor before spraying the pigment so that the powder surface was flat.

(3) Dyes and Solvents Used Dyes: Suminoll Mill manufactured by Sumitomo Chemical Co., Ltd.
ing Brilliant Violet B conc Solvent: Water, except that polyethylene glycol (average molecular weight 200) is used in Example 5 (4) Dye solution spray nozzle used and its mounting position Nozzle: Spiring System, internal mixing type two-fluid nozzle, air pressure Adjust the spray angle with: Nozzle mounting position: 20 cm above the surface of detergent particles on the belt conveyor

(5) Evaluation method Product appearance: The shade of the color of the colored particles and the quantity balance in the product in which the particles are mixed were visually judged according to the following criteria. ◯: Around 20 to 80 colored particles are present in 1 g of the product as a guide, and the particles can be clearly discriminated against the detergent particles. ○ to Δ: The number of colored particles is almost the same as ○, and the color tone is slightly light. Slightly dark Δ: The hue is the same as that of ○ to △, and the number of colored particles is close to 20 or 80. ×: The hue is considerably light or too dark, and the number of colored particles also deviates from the range of ○, or aggregation of colored particles occurs. The angle of repose is extremely lumped and the fluidity is poor. Acrylic square column (30 × 100 × 100
(mm), put the sample from the top, and gently open the side door in a horizontal place to discharge the powder. Measure the angle of the powder remaining in the container.

Comparative Example The same procedure as in Examples was carried out with the addition amount of the dye being 0.00005 or 2%. The execution conditions and evaluation results are also shown in Table 2. From Table 2, it can be seen that a high bulk density detergent having good appearance and fluidity can be obtained in the range of 0.0001 to 1% addition of the dye.

[0020]

[Table 2]Table 2: Dye spraying conditions and evaluation results Example Comparative example 1 2 3 4 5 1 2 3 Dye solution concentration 5 10 50 50 10 3 3 50 (%) Dye addition amount 0.0001 0.01 0.1 1 0.01 0.00005 0.00005 2 (% to detergent) Spray angle 20 20 40 40 20 20 10 40 (゜) Product appearance ○ ～ △ ○ ○ ○ ～ △ ○ × × × Angle of repose 40 40 40 50 45 40 40 90 that's all Remarks Slight color Slightly colored Particles Particles Light dark color light rare few aggregations Note 1. Angle of repose of detergent particles before coloring: 40 ° Note 2. If the concentration of the dye solution exceeds 50%, a large amount of dye lump will be generated and the nozzle will be clogged. Amount of dye added is displayed as pure content

Claims (1)

[Claims] 1. Coloring, characterized in that the detergent particles on a belt conveyor are partially colored with 0.0001 to 1% by weight of a pigment with respect to the detergent particles having a bulk density of 0.5 g / cc or more. A method for producing a particle-containing high bulk density detergent.