JP3301982B2 - Detergent articles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spoon for powder detergents such as high bulk density granular detergents.

[0002]

2. Description of the Related Art A high bulk density detergent is commercially available as a product in which a powder detergent and its measuring spoon are filled in a packaging container. Various studies have been made on powder detergents to be filled, and it has been known that detergent particles having a larger particle diameter are used for the purpose of improving the flowability, appearance, and anti-dusting property of the powder detergent. Therefore, it is desirable that the particle size of the detergent particles is small.

[0003] The present inventors have found that a high bulk density detergent having a specific particle size distribution has excellent solubility. But,
When measuring such a high bulk density detergent having a specific particle size distribution using a conventional measuring spoon, the detergent may adhere to the spoon depending on the use conditions. Conventionally, the problem of the adhesion between the spoon and the detergent particles has hardly been studied in relation to the shape of the spoon.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a powder detergent spoon having a scooping portion and a gripping portion, wherein the bottom surface extends in the gripping portion longitudinal direction on the back surface of the gripping portion. Provided is a powder detergent spoon provided with a groove including side surfaces rising from both ends, and an angle formed by the bottom surface and each of the side surfaces is 100 ° to 170 °.

The present invention also relates to a powder detergent spoon having a scooping portion and a grip portion, wherein a groove extending in the longitudinal direction of the grip portion is provided on a back surface of the grip portion, and a cross section of the groove is provided. Provided is a powder detergent spoon having a curved shape only.

[0006] The present invention is also a powder detergent spoon having a scooping portion and a grip portion, wherein a groove extending in the longitudinal direction of the grip portion is provided on the back surface of the grip portion, and the groove is formed of powder. Provided is a powder detergent spoon having a shape capable of suppressing adhesion due to an interaction force between a detergent and a grip portion.

Further, the present invention contains a nonionic surfactant having a pour point of less than 40 ° C. in an amount of 2% by weight or more and a bulk density of 600%.
流動 1200 g / liter, the flow time is 10 seconds or less, the average particle diameter is less than 400 μm, and the following condition (1)
Alternatively, there is provided a detergent article obtained by filling a packaging container with the high-density granular detergent composition satisfying (2) and the above-mentioned spoon for powder detergent of the present invention. <Conditions of Particle Size Distribution> (1) 85 particles having a particle size of 180 μm or more and less than 500 μm
% By weight or more. (2) 50 particles having a particle diameter of 180 μm or more and less than 500 μm
The weight ratio of particles having a particle diameter of 500 μm or more to particles having a particle diameter of not less than 180 μm and
It is as follows.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Spoon for powder detergent] The spoon for powder detergent of the present invention is provided with a groove extending in the longitudinal direction of the grip on the back surface of the grip, and the width of the groove is set at the bottom of the groove. And gradually increases in the opening direction. The groove has a bottom surface and side surfaces rising from both ends of the bottom surface, and an angle formed by the bottom surface and the side surface is 100 ° to 170 °.

Generally, it is considered that the adhesion between the spoon and the powder detergent is caused by the interaction force between the two, and the interaction force includes van der Waals force, electrostatic attraction, liquid crosslinking force (influence of moisture in the air, etc.). ), Chemical bonding, entanglement,
There is mechanical or physical acting force of the powder. In the spoon of the present invention, the shape of the groove of the gripping portion can reduce the adhesion due to the interaction force between the spoon and the powder detergent. As a result, even when the spoon and the powder detergent are filled together, the grip on the grip portion can be reduced. Adhesion of the powder detergent is significantly suppressed.

An example of the detergent spoon of the present invention will be described with reference to FIG. 1 (a) is a perspective view of the detergent spoon of the present invention as viewed from above, FIG. 1 (b) is a perspective view of the detergent spoon from below,
FIG. 1C is an enlarged cross-sectional view taken along line XX of FIG. In FIG. 1, 1 is a scooping unit, 2 is a gripping unit, 3 is a groove, and the groove 3 has a bottom surface 31 and a side surface 32. The cross-sectional shape of the groove 3 is such that the intersection of the bottom surface 31 and the side surface 32 is curved. The angle between the bottom surface 31 and the side surface 32 is 100 ° to 170 °.
And particularly preferably 110 ° to 160 °. Thereby, it is possible to make the shape such that the sectional area of the groove gradually increases in the opening direction. 2 (a) to 2 (e) show other aspects of the holding portion of the spoon of the present invention. 2A, the cross-sectional shape of the groove 3 may consist of only a straight line, or FIG.
As shown in (b), at least a part of the cross-sectional shape of the groove may be formed by a curve, that is, a straight line and a curve. Further, as shown in FIGS. 2D and 2E, the cross-sectional shape of the groove may consist of only a curve. Further, as shown in FIG. 2C, a protrusion (rib) may be provided in the groove for the purpose of reinforcing the grip portion or the like. The number of grooves can be two or more, but one is desirable to reduce the amount of material used.

By forming such a groove in the grip portion, the adhesion of the powder detergent, particularly the powder detergent composed of fine particles, to the grip portion is remarkably suppressed.

As shown in FIGS. 3 (a) to 3 (c), the gripping portion of a conventional commercially available powder detergent spoon has a slight width from the bottom of the groove toward the opening even if the groove is formed. (Generally less than 100 °, 92 °
~ 93 °), and the adhesion of the powder detergent cannot be sufficiently suppressed.

Examples of the material of the spoon of the present invention include polyesters such as high-density polyethylene (HDPE), polypropylene (PP) and polyethylene terephthalate (PET), various plastics such as hard vinyl chloride and neoprene rubber, and papers. . When using plastic, an antistatic agent may be added. When paper is used, a laminate of plastic such as polyethylene on the surface may be used. In particular, plastic is preferable in terms of material processing.

The volume and shape of the scooping section, the length and width of the gripping section, and the like may be appropriately determined in consideration of the amount of detergent, the size of the packaging container, and the like.

[High-Density Granular Detergent Composition] In the high-density granular detergent composition of the present invention, the particle size distribution measured from the weight fraction satisfies the following condition (1) or (2). <Conditions of Particle Size Distribution> (1) 85 particles having a particle size of 180 μm or more and less than 500 μm
% By weight or more. (2) 50 particles having a particle diameter of 180 μm or more and less than 500 μm
The weight ratio of particles having a particle diameter of 500 μm or more to particles having a particle diameter of not less than 180 μm and
Or less, preferably 1 or less, more preferably 0.6 or less.

In the high-density granular detergent composition according to the present invention, the content of the surfactant is from 15 to 60 in terms of detergency.
% By weight, more preferably 20 to 50% by weight,
Particularly preferably, it is 27 to 45% by weight. Examples of the surfactant include at least one selected from a nonionic surfactant, an anionic surfactant, a cationic surfactant, and an amphoteric surfactant.

The nonionic surfactants include detergency,
In particular, the melting point is preferably 40 ° C. or less, more preferably 30 ° C. or less, and particularly preferably 25 ° C.
It is as follows. Melting points were measured using a Mettler Instrument FP81 of the FP800 Thermo System.
e AG) at a heating rate of 0.2 ° C./min). In particular, a polyoxyalkylene alkyl ether obtained by adding 4 to 12 mol, particularly 6 to 10 mol of an alkylene oxide to an alcohol having 10 to 14 carbon atoms is preferable. The content of the nonionic surfactant is preferably at least 3% by weight, more preferably from 5 to 25% by weight, particularly preferably from 10 to 18% by weight, from the viewpoints of detergency and scattering prevention of fine powder.

Preferred examples of the anionic surfactant include linear alkylbenzene sulfonate, α-sulfofatty acid salt or its ester salt, α-olefin sulfonate, alkyl or alkenyl sulfate, and polyoxyethylene alkyl ether. Sulfates and the like. As these counter ions, alkali metal ions are preferable in terms of detergency. From the viewpoint of improving the dissolution rate, potassium ions are preferred. The compounding amount of the anionic surfactant is
From the viewpoint of detergency, the amount is preferably 50% by weight or less, more preferably 1 to 30% by weight, and particularly preferably 3 to 20% by weight.

Examples of the cationic surfactant include a quaternary ammonium salt such as an alkyltrimethylammonium salt, and examples of the amphoteric surfactant include a carbobetaine type and a sulfobetaine type.

The high-density granular detergent composition of the present invention comprises an alkali metal salt such as a carbonate group, a hydrogen carbonate group, a sulfate group, a sulfite group, a hydrogen sulfate group, a hydrochloric acid group or a phosphate group, an ammonium salt, or an amine salt. And other water-soluble inorganic salts.
Of these, carbonate groups, sulfate groups and sulfite groups are preferred.

In terms of alkali buffering ability and sequestering ability, the ion exchange capacity is 100 mg / CaCO ₃ /
g or more, preferably 200 to 600 mg CaCO ₃ / g
0.5 to 40% by weight, preferably 1 to
25% by weight can be blended. Crystalline silicates include SiO ₂ from the viewpoint of sequestering ability and moisture absorption resistance.
(Where M represents an alkali metal atom.) / M ₂ O is from 0.5 to 2.6 is preferred in a molar ratio.

Further, a carboxylic acid polymer and an aluminosilicate such as zeolite can be blended. In particular, acrylic acid-based polymers such as salts of acrylic acid-maleic acid copolymers and polyacrylates are excellent in terms of sequestering ability of metal ions and dispersing ability of solid particle stains. The carboxylic acid-based polymer is preferably used in the composition at 0.5 to 12% by weight, more preferably 1 to 7% by weight, and particularly preferably 2 to 5% by weight, from the viewpoint of cleaning performance.

Further, other anti-staining agents such as citrate, succinic acid and carboxymethyl cellulose; dispersants or color transfer inhibitors such as polyethylene glycol, polyvinylpyrrolidone and polyvinyl alcohol; bleaching agents such as sodium percarbonate; A bleaching activator described in JP-A-6-316700, an enzyme such as a protease, a cellulase, an amylase or a lipase, an enzyme stabilizer, a biphenyl type,
A stilbene-type fluorescent whitening agent, an antifoaming agent, an antioxidant, a bluing agent, a fragrance, and the like may be added.

Next, the physical properties of the composition will be described. JIS K336 of the high-density granular detergent composition of the present invention
The bulk density based on No. 2 is 600 to 1 from the viewpoint of securing voids between particles and improving dispersibility by suppressing the number of contact points between particles.
200 g / l is preferred, more preferably 700 g / l
９950 g / l.

The average particle size is 400 μm or less, preferably 340 to 400. The average particle diameter is JIS
After shaking for 5 minutes using a standard sieve of Z8801,
It is measured from the weight fraction depending on the sieve size.

The flow time required for 100 ml of the powder to flow out of the hopper for bulk density measurement specified in JIS K 3362 is preferably 10 seconds or less, more preferably 8 seconds or less, and particularly preferably 6 seconds or less. .5 seconds or less.

The high-density granular detergent composition of the present invention can be produced, for example, by agitating tumbling granulation operation using a vertical mixer or a horizontal mixer, or a method for producing compacted particles in which the composition compressed by an extruder is crushed by a crusher. And a method of classifying the compacted particles using a wind force or a sieve.

[Packaging Container] The container filled with the high-density granular detergent composition and the spoon of the present invention is preferably made of nylon, polypropylene and polyethylene such as 6-nylon and 66-nylon in terms of resistance to a surfactant. And paper laminated with one or more resins selected from the group consisting of: Because it is laminated on paper,
High strength can be manufactured even with a small amount of plastic.
Further, these plastics may be laminated on paper in a plurality of layers, or may be further laminated with aluminum foil or the like. The molecular weight of the resin is preferably 30,000 to 200,000, and more preferably 50,000 to 150,000.

The amount of plastic in the laminate is
The thickness (as a single layer) of the plastic coated on the paper is preferably 5 to 50 μm, preferably 10 to 50 μm.
It is preferable to set it to μm. Within this range, the amount of plastic used can be reduced while maintaining the strength of the container. The shape of the container can be a box shape, a cylindrical shape, or the like.A box material is manufactured by forming an expanded sheet material for forming a box body from a material obtained by laminating the above resin, and assembling the sheet material. can do.

[0030]

EXAMPLE [Adhesion Test of Powder Detergent to Spoon] Spoon The spoon of FIG. 1 was designated as spoon 1, and the spoon 2 having the cross-sectional shape shown in FIG. . The spoon was made of polypropylene.

Detergent composition 4A zeolite 25%, sodium carbonate 13%, sodium sulfate 10%, sodium polyacrylate 4.5%
Was spray-dried to prepare a spray-dried dough. 55% of this spray-dried dough, 5% of crystalline silicate
Into a vertical mixer, sodium dodecylbenzenesulfonate 46%, polyoxyethylene dodecyl ether 36%, polyethylene glycol (Mw = 6000)
A mixture of 4%, 2% sodium palmitate and 12% water is spray mixed. Then, the crystalline silicate 5
%, 4A type zeolite 5%, amorphous aluminosilicate 6%
Was added and stirred and mixed, and a fragrance was further flavored by 0.2%. Further, coarse particles were sieved using a 710 μm sieve to obtain a granular detergent composition. The particle size distribution of the resulting detergent composition is 500, 355, 250, 180, 125 μm on a sieve, 1
The weight frequency under a 25 μm sieve is 1.6% and 16.
9%, 40.4%, 26.4%, 9.9%, 3.6%, and the average particle diameter was 273 μm. The bulk density was 750 g / liter and the flow time was 5.8 seconds.

Operation The above detergent composition is 15 cm long, 9 cm wide and 11 cm high.
Into a paper box. The surface is made of paper laminated with polypropylene. The entire spoon is buried in the box filled with the detergent composition such that the groove extending in the longitudinal direction of the grip portion of the spoon faces upward. The box is vibrated 10 times for about 5 seconds at an amplitude of 50 cm, the spoon is gently removed, and the groove is turned upside down to remove some of the particulate detergent composition attached to the spoon.
After this, the spoon weight is weighed. The amount of detergent attached to the spoon was determined from the difference between the weight of the spoon before and after the test.

Results The amount of detergent attached to the spoon was 1046 for spoon 2.
mg, but with spoon 1, it was significantly reduced to 17.6 mg.

[0034]

According to the present invention, a spoon for powder detergent to which fine powder does not adhere can be obtained. This effect is particularly remarkable in the case of a powder detergent composed of a high bulk density granular detergent composition having a specific particle size distribution as in the present invention.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a powder detergent spoon of the present invention.

FIG. 2 is a schematic cross-sectional view of a gripping portion of the powder detergent spoon of the present invention.

FIG. 3 is a schematic cross-sectional view of a gripping portion of a conventional powder detergent spoon.

[Explanation of symbols]

 1: scooping part 2: gripping part 3: groove 31: bottom surface 32: side surface

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Sakazume 2606 Kabane-cho Akabane, Haga-gun, Tochigi Prefecture, Japan Kao Co., Ltd. References JP-A-6-84312 (JP, U) JP-B-55-6371 (JP, B2) JP-B-52-31669 (JP, Y2) US Patent 5,347,865 (US, A) (58) Fields investigated ( Int.Cl. ⁷ , DB name) G01F 19/00 B65D 25/20

Claims (3)

(57) [Claims] 1. A nonionic surfactant having a pour point of less than 40 ° C. containing 2% by weight or more and a bulk density of 600 to 1200 g.
/ Liter, flow time is 10 seconds or less, average particle size is 4
A high-density granular detergent composition that is less than 00 μm and satisfies the following condition (1) or (2), and a powder detergent spoon having a scooping portion and a grip portion, wherein a grip portion length is provided on the back surface of the grip portion. A groove extending in the hand direction, comprising a bottom surface and a side surface rising from both ends of the bottom surface, is provided, and the bottom surface and the side surface each form an angle of 100 ° to 170 ° to package a powder detergent spoon. A detergent article filled in a container. <Conditions of Particle Size Distribution> (1) 85 particles having a particle size of 180 μm or more and less than 500 μm
% By weight or more. (2) 50 particles having a particle diameter of 180 μm or more and less than 500 μm
The weight ratio of particles having a particle diameter of 500 μm or more to particles having a particle diameter of not less than 180 μm and
It is as follows. 2. The detergent article according to claim 1, wherein at least a part of the cross-sectional shape of the groove of the powder detergent spoon is formed in a curved shape. 3. A nonionic surfactant having a pour point of less than 40 ° C. in an amount of 2% by weight or more and a bulk density of 600 to 1200 g.
/ Liter, flow time is 10 seconds or less, average particle size is 4
A high-density granular detergent composition having a particle size of less than 00 μm and satisfying the following condition (1) or (2), and a powder detergent spoon having a scooping portion and a grip portion, wherein a grip portion length is provided on the back surface of the grip portion. A detergent article in which a packaging container is filled with a powder detergent spoon provided with a groove extending in the hand direction and having a cross-sectional shape consisting of only a curve. <Conditions of Particle Size Distribution> (1) 85 particles having a particle size of 180 μm or more and less than 500 μm
% By weight or more. (2) 50 particles having a particle diameter of 180 μm or more and less than 500 μm
The weight ratio of particles having a particle diameter of 500 μm or more to particles having a particle diameter of not less than 180 μm and
It is as follows.