JPH1072599A - Sheet-like product for washing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet-like product for washing which facilitates the adjustment of the amt. of is used in the practical use, is excellent in easiness and simplicity in handling, can reduce the leak or scatter of the contents, and is excellent in shape stability by sticking a specific water-soluble substrate to both sides of a thin layer contg. a doughy detergent compsn. for clothes. SOLUTION: The detergent compsn. comprises various surfactants, a water-soluble inorg. salt, a builder, a chelating agent, a percarbonate, etc., provided that the ratio of the total org. content, the total inorg. content, and the water content is in the range surrounded by points A, B, C, D, E, F, G, and H of a triangular coordinate shown by the figure and that the thickness is lower than 5mm. The water-soluble substrate supporting the thin layer comprises a water-soluble film and/or water-soluble polymer fibers and pref. is soluble in 50 deg.C water (e.g. polyvinyl alcohol). Though the method for preparing the sheet-like product is not specifically limited, it is produced with a kneader, etc., so that the product obtd. has an areal density of 0.005-1.0g/cm<2> and that when the product is broken, the loss of the compsn. due to its flowing away from the thin layer is pref. lower than 0.8g/200cm<2> .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for easily adjusting the amount of use in actual use, which is excellent in simplicity, greatly reduces leakage and scattering of contents, and furthermore, improves form stability against impact during transportation and filling. The present invention relates to an excellent laundry product, particularly to a sheet-like laundry detergent.

[0002]

2. Description of the Related Art Powdered detergent products for clothing which have been marketed in the past have a bulk density of 0.2 to 0.4 g / cm ³ obtained by a spray drying method, and have a In most cases, paper boxes were filled with a detergent having a standard usage of about 40 g per 30 liters of water. In use, it is common to lift the entire box during washing, directly sprinkle the detergent into the washing tub, or measure an approximate amount using a cup or the like, and then put the detergent into the washing tub. However, recently, a so-called compact type powder detergent having a bulk density of 0.7 g / cm ³ or more has been developed,
Although problems such as carrying of the detergent have been improved, there is still a problem regarding scattering of the detergent powder at the time of measurement or when the detergent is introduced.

[0003] In general, most of detergents, softeners and bleaching agents for clothing include "use precautions" such as "please wash your hands well after use" and " Rinsing "and so on. Therefore, the avoidance of the scattering of the powder means that the operation of washing or rinsing with water can be avoided when the powder is scattered and touches the hands or enters the eyes, so that the simplicity in use can be improved and the Preferred. Also, of course, if the powder scatters on the floor etc., it is necessary to clean it, and if you do not clean it, if you spill water,
Problems such as the floor slipping easily occur. From these points as well, it is desired to solve the problem of powder scattering of detergents and the like.

[0004] In order to improve ease of use and to prevent scattering of detergent powder during use, an amount of detergent per wash is used.
One-pack detergents that have been previously packaged with a water-soluble, water-permeable or water-dispersible material have been proposed. For example, JP-A-63-8496, JP-A-63-8497 and JP-A-63-12467 disclose a bulk density of 0.5.
A one-pack detergent has been proposed in which a detergent of 1.2 g / cm ³ is packaged separately in a water-soluble film. However,
In the high-density detergent packaged and packaged with these water-soluble materials, the water solubility of the film has been improved for the purpose of improving the solubility in water as much as possible. Therefore, when the product is touched with a wet hand, the film dissolves immediately, a hole is formed in a portion touched by the hand, the detergent is spilled, and the powder is liable to be scattered.

When it is desired to use a very small amount of detergent, it is necessary to break the detergent by hand or the like and take out the detergent because the amount of detergent is too large in one-minute package. Also in this case, the detergent powder is spilled. Further, at this time, since the detergent powder is broken by hand, the chance of the detergent powder coming into contact with or adhering to the hand is significantly increased, so that it is troublesome to rinse the hand after use. Moreover,
This was very inconvenient, as the remaining broken sachets with detergent had to be stored so that the detergent powder did not spill.
That is, in a high-density detergent packaged and packaged with a water-soluble material, in an actual use situation, it is difficult to arbitrarily adjust the amount of use, and there is a problem that scattering of powder cannot be completely prevented. .

[0006] On the other hand, many attempts have been made to tablet the product into single-use amounts to avoid scattering and leakage of powder and contents. However, it is difficult to arbitrarily adjust the use amount even in the case of tablets. It is. If you dare try to adjust it arbitrarily and split it by hand, it will be very laborious, and you will directly touch the composition of the product by hand, and if you split it, scattering and leakage of powder etc will also occur In some cases, it is not preferable because the labor for rinsing the hands and the labor for cleaning are eventually caused. Furthermore, in the case of tablets, since the powdery composition and its raw materials are tableted according to the tablet molding method, some or all of the tablets are destroyed by the impact during transportation and filling, so care must be taken in handling the tablets. There is also a problem.

Further, as a form effective for preventing the scattering of powder, a sheet-like detergent containing a nonionic activator obtained by impregnating a water-soluble or water-insoluble film or nonwoven fabric with a detergent component (see, for example, JP-A No. No. 228398, British Patent No. 2084176, etc.). However, in this mode, the detergent component is exposed on the surface, so that the detergent component adheres to hands and containers. Further, when a water-insoluble film or nonwoven fabric is used as a substrate to be impregnated, it is necessary to discard these substrates after use, which is not convenient. Furthermore, in this case, there is also a problem that in the process of stirring the water-insoluble nonwoven fabric in the washing machine, a part of the insoluble fiber component falls off the entire nonwoven fabric and remains on the surface of the clothes after washing and drying. In this case, if the clothing is of a dark color, it is not preferable because the residue on the clothing surface becomes noticeable after drying.

As an example of a laundry product using a water-insoluble substrate, US Pat. No. 4,170,565 discloses a form in which a cleaning activator is sandwiched by a nonwoven fabric having a specific air permeability in addition to a form impregnated with a cleaning active ingredient. Is disclosed. However, in the present invention, the detergent for clothing having a high builder content uses tripolyphosphate for the builder,
High moisture content. As is well known, the use of phosphorus-containing clothing detergents should be restricted as much as possible due to eutrophication problems. However, a composition containing 15% or more of each of tripolyphosphate and water as a builder has an advantage that it is difficult to substitute another builder. That is, a composition containing 15% or more of each of tripolyphosphate and water as a builder is excellent in transportability of the cleaning active substance fabric per fixed viscosity. For example, only by replacing the tripolyphosphate with zeolite, if the viscidity of the detergent cloth is imparted enough to form a sandwich, the transport efficiency of the cleaning active substance by a pump or the like is significantly reduced.
At this time, the application to the substrate and the processing of the active substance into a sheet form are very inefficient. Therefore, it is very difficult to eliminate phosphorus in the present disclosure. Further, when a water-insoluble nonwoven fabric which is inconvenient to use is changed to a water-soluble sheet, it is naturally necessary to greatly reduce the water content. Further, in the technique of the present disclosure, a phosphorus-free sheet-like detergent having no residue is required. Is difficult to achieve.

US Pat. No. 5,202,045 proposes a form in which a water-insoluble nonwoven fabric is bent into an S-shape and two places can be filled with a cleaning active substance and / or a drifting active substance. The composition containing a sufficient amount of builder as in JP-A-4170565 contains at least 15% each of tripolyphosphate and water as builders, and contains a phosphate substitute builder, particularly zeolite, and has a low water content. The fact is that the technology is not disclosed.

[0010] Further, JP-A-61-12796 discloses that
A detergent additive is disclosed in which a mixture containing at least two of a nonionic surfactant, a per-compound activator and a specific nitrogen-containing compound is embedded in a water-soluble film-forming polymer. However, this detergent additive is basically used in combination with a detergent, does not exhibit sufficient detergency by itself, and is preferably used in consideration of simplicity and economy because it is used in combination with another detergent. Absent. Also,
This additive mixes components such as a surfactant with an aqueous solution of a film-forming polymer, and the mixture is dried to form a film. It is difficult to carry a sufficient amount of a detergent component. Moreover, the sheet-shaped additive disclosed in the publication is an example in which a sheet is formed by heat molding, and a part of the detergent component is exposed on the surface of the sheet similarly to the impregnated product described above, so that the detergent component is manually formed. And adhere to containers.

[0011] In a detergent for clothing, since a basic necessary component is often a large amount of a surfactant, a sequestering agent and an alkali agent, it is possible to carry a large amount of these cleaning active components while maintaining solubility. It was difficult to get the product.

[0012]

Means for Solving the Problems The present inventors have conducted intensive studies in order to obtain a laundry product which is excellent in simplicity and which does not scatter the contents during use of the detergent, at the time of filling and transportation, and which does not leak. Was. As a result, by providing a means for maintaining a thin layer containing a dough-like composition having substantially no fluidity and having plasticity, a sheet-like product much thinner than a conventional one-pack detergent or the like is provided. It can be made into a form, and the durability when touched with wet hands is improved, and there is no outflow of contents when broken when adjusting the amount of use, so it is easy to use, and the base is removed after washing. It has been found that a laundry product having unnecessary convenience and having flexibility in the entire laundry product can be obtained without the damage of the product due to the impact at the time of transportation and filling and the accompanying leakage of the contents. ,
The present invention has been completed.

[0013] That is, the present invention provides a thin layer of a dough-like material of a detergent composition for clothing having a thickness of less than 5 mm and a means for maintaining the thin layer disposed on both sides of the thin layer. And an area density of 0.00
5 to 1.0 g / cm ² , 200 cm ² at break
An object of the present invention is to provide a sheet-like laundry product in which the amount of the composition flowing from the thin layer is less than 0.8 g.

The sheet-like laundry product of the present invention has a thin layer containing the composition and means for maintaining the thin layer, and the thin layer may be formed continuously or discontinuously. The retaining means is arranged in a sandwich outside the lamina. FIG. 2 shows an example of the sheet-like laundry product of the present invention.
Shown in In FIG. 2, 1 is a thin layer containing the composition, 2, 2 ′
Is a maintenance means, and in this example, a water-soluble substrate arranged on both sides of the thin layer is used as the maintenance means.

In the present invention, the means for maintaining the thin layer is such that the thin layer comes into contact with another substance (for example, contact with another thin layer or a user).
In doing so, by reducing the adhesiveness of the thin layer, damage due to contact is also reduced, the shape of the thin layer is maintained, and the leakage and scattering of the cleaning composition, which is the content, is suppressed to reduce the thin layer. This is a means for maintaining the shape, and may have other functions. In the present invention, it is particularly preferable to use a water-soluble substrate as such a maintaining means.

[Water-soluble substrate] First, the water-soluble substrate used in the present invention will be described. As the water-soluble substrate used in the present invention, a water-soluble film, a nonwoven fabric or woven fabric composed of a water-soluble polymer fiber, or a laminated substrate of a nonwoven fabric or woven fabric composed of a water-soluble film and a water-soluble polymer fiber is preferable. Among these water-soluble substrates, the water-soluble nonwoven fabric has a problem that the stickiness to hands when touched by wet or extremely wet hands is reduced and the feel is good, and that the sheet-like laundry articles adhere to each other during storage. It is more preferable in that it is reduced. On the other hand, in the case of a water-soluble film, embossing the water-soluble film is preferable since a similar effect can be obtained by embossing the surface. These water-soluble substrates are composed of a water-soluble polymer. Specifically, polyvinyl alcohol, polyvinylpyrrolidone, pullulan,
Examples include polyacrylamide, polyacrylic acid, polymethacrylic acid, polyitaconic acid, polyethylene oxide, polyvinyl methylene ether, xanthan gum, guar gum, collagen, carboxymethylcellulose, hydroxypropylcellulose, and hydroxyethylcellulose, especially polyvinyl alcohol or maleic acid or itaconic acid. Is preferred.

Among such water-soluble substrates, water-soluble nonwoven fabrics are disclosed in JP-A-8-127919 and JP-A-8-279919.
JP-A-3848, JP-A-5-321105, JP-A-7-42019, JP-A-3-86530, JP-A-3-279410, JP-A-3-199
408, JP-A-2-112406 and JP-A-61-75862. As the woven fabric, those obtained from the various water-soluble polymer fibers described above can be used. In addition, the diameter of the water-soluble polymer fiber constituting the nonwoven fabric or the woven fabric is preferably from 5 to 200 μm, particularly preferably from 5 to 50 μm.

Examples of the water-soluble film include US Pat. No. 3,186,869, US Pat. No. 3,198,740,
US Patent No. 3280037, US Patent No. 332267
4, No. 48-33837, 48-883.
No. 43, 50-140958, 51-1
No. 50, No. 52-77961, No. 55-15
1853, 57-1851, JP-A-59
No. -180085, No. 61-57700, No. 61-97348, No. 61-98752,
Nos. 61-200146, 61-200147, 61-204254, 61-2280
Nos. 57 and 62-57492 and 62-15
Nos. 6112, 62-275145, 63
-8496, 63-8497, 63-
Nos. 12466, 63-12467 and 64
JP-A-29408, JP-A-64-29438, JP-A-2-60906, JP-A-2-108534,
JP-A-2-163149, JP-A-3-59059,
Nos. 4-53900, 4-57989, 4-63899, 4-72180, and 4
-147000, 4-1998, 4-1
No. 74792, No. 4-202600 and the like.

Further, as the water-soluble substrate of the present invention, a non-woven fabric or a woven fabric composed of the above-mentioned water-soluble polymer fiber and a laminated substrate composed of a water-soluble film can be used. As a method for obtaining such a laminated substrate, other than a method in which a water-soluble film is overlaid on one surface of a nonwoven fabric or the like and bonded by heat sealing or the like, a film is formed by applying a water-soluble polymer to one surface of a nonwoven fabric or the like. Method. When such a laminated substrate is used, it is preferable that the water-soluble film is disposed so as to be in contact with the composition layer, and the outside is made of a nonwoven fabric or the like. FIG. 3 shows a sheet-like laundry product of the present invention using such a laminated substrate. FIG. 3 shows a sheet-like laundry product comprising a composition layer 21 and a laminated substrate as a maintenance means, and the water-soluble film 2 of the laminated substrate is in contact with the composition layer 21.
3 and 23 'are disposed, and a water-soluble nonwoven fabric 22,
22 'is arranged.

Among the water-soluble substrates exemplified above, a non-woven fabric or a woven fabric made of a water-soluble polymer fiber is preferred because of the easiness of tearing when adjusting the amount of use, and in particular, polyvinyl alcohol, maleic acid, itaconic acid and the like. Nonwoven fabrics or woven fabrics obtained by using fibers made of polyvinyl alcohol modified with are preferred. Further, a water-soluble laminated substrate in which a water-soluble film made of polyvinyl alcohol or polyvinyl alcohol modified with maleic acid or itaconic acid is laminated on a nonwoven fabric or woven fabric made of the water-soluble polymer fiber, is also preferable.

The water-soluble substrate used in the present invention has a temperature of 50 ° C.
Is preferably dissolved in water. Where "dissolve"
Is defined as 0.5 g of a water-soluble substrate in 1 liter of water at 50 ° C.
Dissolved within 0 minutes, preferably within 7 minutes, and passed through a 8.6 sieve (2000 μm) without any residue.

[Cleaning composition for clothing] Next, the cleaning composition for clothing of the present invention will be described. The detergent compositions for clothing that can be used in the present invention include anionic surfactants, nonionic surfactants, amphoteric surfactants, cationic surfactants, and water-soluble surfactants commonly used in this field. Inorganic salts, builders, chelating agents, anti-staining agents, enzymes, sulfites, soil release agents, dye transfer inhibitors, fluorescent dyes, fragrances, clay,
It may be composed of a foaming inhibitor such as silicone, a percarbonate, a perborate, a bleach activator, a granulation auxiliary such as a high molecular weight polyethylene glycol, etc., and is not particularly limited.

However, the water content in the detergent composition is preferably less than 15%. More preferably, the water content of the cleaning composition is less than 9%. These water contents can be adjusted by paying attention to the water content used during the adjustment and the degree of drying. In particular, when forming a dough, an organic solvent, a nonionic surfactant, or a polyalkylene glycol having a molecular weight of 2,000 or less, such as polyethylene glycol or polypropylene glycol, an organic alkali agent of alkylbenzenesulfonic acid and amines, or a water-soluble inorganic salt. Using a mixture of alkaline agents, anionic surfactants, amphoteric surfactants, cationic surfactants, and organic substances such as soil release agents to form a plastic-like dough having substantially no fluidity Is preferred.

The preferred embodiment of the cleaning composition of the present invention will be described in detail. The water content of the cleaning composition used in the present invention is preferably 15% by weight or less, more preferably 9% by weight or less, when using a water-soluble substrate. 1
When the water content exceeds 5% by weight, the water-soluble substrates located on both sides of the thin layer of the cleaning composition partially melt and become tacky, and the sheet-like detergents adhere to each other.
When stored at low humidity, such as in winter, the detergent composition dries and becomes very brittle, making it impossible to maintain sheet-like flexibility in practical use. Here, the water content is a weight loss when dried at 105 ° C. for 1 hour, and excludes water of crystallization contained in inorganic salts such as zeolite and carbonate and organic salts such as citric acid. Is done.

In order to maintain the flexibility of the dough, it is also preferable to adjust the mixing ratio of the inorganic compound and the organic compound in the composition. The preferred mixing ratio of the organic compound to the inorganic compound is organic compound / inorganic compound = 80/20 to 10/9.
0 (weight ratio), more preferably 70/30 to 15
/ 85. When this ratio exceeds 80/20, it becomes easy to process by coating or the like. However, when a sheet is formed into a sandwich using two or more substrates, the leakage of the cleaning active substance gradually and gradually passes through the substrates. It is not preferable because it occurs. This is particularly noticeable when a liquid organic substance is used. On the other hand, when the ratio is less than 10/90, it becomes difficult to obtain a uniform dough by stirring. Further, when the sheet is formed into a sandwich by using a substrate, the cleaning active material layer becomes extremely brittle, and the cleaning active material at the time of breakage leaks in a powder form, which is not preferable.

As described above, in the cleaning composition of the present invention, the ratio of the total organic substance content (a) to the total inorganic substance content (b) and the water content (c) is represented by a point A [on the triangular coordinates shown in FIG. (A) 68
/ (B) 17 / (c) 15], point B [(a) 80 /
(B) 20 / (c) 0], point C [(a) 10 / (b) 9
0 / (c) 0] and point D [(a) 8.5 / (b) 76.
5 / (c) 15]. More preferably, the point E [(a) 63.7 / (b) 2
7.3 / (c) 9], point F [(a) 70 / (b) 30 /
(C) 0], point G [(a) 15 / (b) 85 / (c)
0] and point H [(a) 13.7 / (b) 77.4 /
(C) 9].

Further, the constituent ratio in the detergent composition for clothing will be described. At this time, in all organic substances,
The mixing ratio between the liquid organic substance and the solid organic substance at room temperature is preferably 10/1 to 1/10, more preferably 1: 1.
0/2 to 2/10. If the ratio of the liquid organic substance is higher than this, it is necessary to use a large amount of the inorganic liquid absorbing compound in order to prevent the liquid substance from bleeding from the dough, which is not economically preferable. On the other hand, when an organic substance which is solid at room temperature, particularly a surfactant, is used outside the above range, the solubility is reduced, which is not preferable.

Further, urea, which is a hydrotroping agent generally used for promoting the solubility of a high-density detergent as an optional component in the detergent composition of the present invention,
It is preferable to add a lower alkylbenzene sulfonic acid such as cumenesulfonic acid, toluenesulfonic acid, or benzoate, or a lower alkylbenzenecarboxylic acid.

[Sheet-like laundry product] Next, the sheet-like laundry product of the present invention will be described. Although the method for preparing the sheet-like laundry product of the present invention is not particularly limited,
First, a dough-like detergent composition is a universal stirrer,
It can be prepared by a stirrer / stirring operation suitable for high viscosity stirring such as kneading by hand or kneading by hand. The plasticity of the kneaded material can be adjusted by adjusting the kneading time and temperature. In order to suppress the leakage of the contents at the time of breaking, it is preferable that the viscosity of the kneaded material exceeds 100,000 mPa · s. In the preparation of the dough, when a component which is liable to undergo thermal denaturation, such as an enzyme or a bleaching component, is added, the temperature during stirring is preferably as low as 40 ° C. or less.

Next, by disposing a water-soluble substrate as a means for maintaining the thin layer of the dough-like detergent composition on both sides thereof, the sheet-like laundry product of the present invention is obtained. As a method, the dough-shaped detergent composition is formed into a sheet shape in advance, and then a water-soluble sheet of at least one layer is attached to both surfaces thereof. A method of compressing and molding with the same or different rollers while supplying between two or more water-soluble sheets moving, applying a dough-shaped detergent composition to at least one or more spread water-soluble sheets. And a method of attaching at least one or more water-soluble sheets on the applied composition.

The sheet-like laundry product of the present invention desirably has a thickness of less than 5 mm from the viewpoint of ease of use. If the thickness is less than 5 mm, the sheet-like laundry product can be easily broken. Also, preferably 0.05 m
When the thickness is not less than m, a sufficient amount of the detergent composition or the like can be filled. A more preferred thickness is 0.25 to 4 mm.

The area density of the sheet-like laundry product of the present invention is 0.005 to 1.0 g / cm ² . When the area density is in this range, the filling amount of the composition is sufficient, and good solubility is obtained. More preferred areal density is ^{0.02g / cm 2 ~0.5g / cm 2} .

As described above, the sheet-like laundry product of the present invention has less than 0.8 g of the composition flowing from the thin layer per 200 cm ² at the time of breaking. Here, the “content loss amount” refers to a temperature of 20 ° C. and a humidity of 60%.
R. H. In the room, the central part (half position in the longitudinal direction) of the sheet-like laundry product prepared in a size of 10 cm × 20 cm is cut in half with commercially available scissors, and a 5 mm portion of the uncut side is clipped. While fixing, and hanging for 30 minutes with both cut parts down, receive the lost or leaked composition on a plastic tray, cut it with a glass rod, tap the sheet three times, and put it on the tray. Refers to the weight of the accumulated contents (composition). A small amount of this loss means that the contents are less scattered or leaked when the sheet-like laundry product is broken in actual use, and is more desirable.

The laundry product of the present invention is in the form of a sheet and has no leakage or outflow of the contents when it is broken or when used, so that it can be used as a conventional powdery or tablet-like or one-pack type laundry detergent. A filling method and a method of use having no form are possible.

For example, a sheet-like laundry product may be perforated to make it easier to break, a pattern or characters may be printed to make the appearance beautiful, or a method of use or precautions for use may be printed. To make it easy for the user to recognize each time the device is used. Further, it is easy to form a continuous layer from the step of manufacturing the composition layer, but it is of course possible to form a discontinuous composition layer.

Further, by loading the sheet-like laundry product of the present invention into an appropriate container, a more convenient laundry product can be obtained. For example, a plurality of sheet-like laundry products of the present invention are prepared, a part of each sheet is folded,
By laminating the sheets in a zigzag pattern and loading them in a predetermined container, a container-containing laundry product from which the sheets can be continuously taken out can be obtained. Such a laundry product is shown in FIG. By laminating the sheets 31 folded in half as shown in FIG. 4 (a) in a staggered manner and loading them in a predetermined container, for example, a paper box 32, a laundry product from which the sheets can be continuously taken out is obtained. In this case, the area of the sheet is preferably 9cm ² or more, more preferably 40~500cm ^2.

Further, a laundry product obtained by loading the sheet-like laundry product of the present invention having a width of 4 cm or more and a length of 30 cm or more into a roll and loading it into a predetermined container can be obtained. These product forms are preferred because of their simplicity and ease of adjusting the amount used. In particular, in the case of a roll shape, a metal and / or resin sheet cutting tool is attached to a loading container (such as a paper box) to make it easier to use, or to be parallel to the short axis at regular intervals. It is also possible to perforate and remove a sheet of a certain size from the inside of the roll artificially or mechanically. Of course, a scale may be attached to the sheet to display the usage amount or the like.

Further, as a simple filling form, a sheet-like laundry product containing 5 g to 20 g of the washing active substance per use may be arranged in a loading container or simply filled without being arranged. In this form, it is possible to store the remnants broken for partial use in the original container. Sheet-like laundry products to be filled into containers are 1/5 to 1
It is preferable that the composition contains a detergent composition corresponding to the amount of repeated use.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited thereto.

<Test Method> The test method adopted in the examples will be described below in advance. [Method of Measuring Runoff and Leakage of Composition When Breaked] Temperature: 20 ° C., humidity: 60% H. In the room above, the central part (half position in the longitudinal direction) of the sheet prepared in a size of 10 cm × 20 cm is cut in half with commercially available scissors, and the 5 mm portion of the uncut side is fixed with a clip. While hanging with the cut part of the cut down for 30 minutes, receive the lost or leaked composition on a plastic tray, tap the cut sheet three times with a glass rod, and then weigh the weight of the composition accumulated on the tray. I asked.

Example 1 <Detergent for sheet-like clothing> 25 g of dodecyldimethylamine oxide from which water had been removed in advance using a microwave oven, "Nonidet R" manufactured by Mitsubishi Chemical Corporation
-7 "[polyoxyethylene (7) alkyl (C ₁₂ -C
₁₅ ) ether] sulfuric acid (Na salt) 10 g, “Sophanol EP7045” (C ₁₂ -C ₁₄ ) manufactured by Nippon Shokubai Chemical Industry Co., Ltd.
5 g of secondary alcohol polyoxyethylene (7) polyoxypropylene (4.5) glycol], 40 g of A4 type zeolite manufactured by Toyo Soda Co., Ltd., 4 g of acrylic acid-maleic acid copolymer K salt (molecular weight 60000), 8 g of soda ash, polypropylene glycol (molecular weight 1000)
2.5 g, Kofuran Chemical Co., Ltd. “Tixolox 2”
5 ", 3 g of d-limonene, 0.9 g of protease" API-21 "manufactured by Showa Denko KK and" Cellzyme 1.0 "manufactured by Novo Industries as cellulase.
T "0.9 g, Amylase" Tamamil 6.0T "0.5 g manufactured by NovoIndustry, and lipase 0.2%" Lipolase 100T "manufactured by Novo Industry.
g, as a fluorescent dye, “Cinopearl CB” manufactured by Ciba Geigy
SX "(0.2 g) was mixed by hand to obtain a dough.

Next, between two stainless steel rollers (manufactured by Sanriki Seisakusho) having a diameter of 50 mm, which are designed to rotate in mutually opposite directions, is disclosed in JP-A-8-384.
No. 8 (basis weight) 2 prepared according to Example 2
10 cm × 2 laminated with 0 g / m ² nonwoven fabric and “Hiselon” (water-soluble film) manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
The two doughs of 0 cm are sandwiched between the nonwoven fabrics as the outermost layer, and the above-mentioned dough is removed while rotating the roller manually.
By inserting 7 g between the laminated substrates, a detergent for sheet-like clothing was obtained. This operation is repeated 50 times, 10 cm × 20 cm
50 sheet-form detergents for clothes containing 7 g of detergent in the base material were obtained. The average area density of this sheet-like clothing detergent was 0.047 g / cm ² , and the average thickness was 1.2 mm. After that, the whole was folded in two and superimposed so as to mesh with each other as shown in FIG.
It was loaded in a paper box measuring 9 cm in height and 9 cm in height. 6c at the top of the box
Drill a rectangular hole of mx 4.5cm and add 1 sheet detergent.
When the sheets were taken out, a part of the next sheet-like clothing detergent was pulled out of the box. This operation could be performed continuously for 47 times. Thus, it was confirmed that the sheet could be easily taken out without putting a hand or finger in the hole. Also,
The sheet could be broken by hand and there was no leakage or spillage of detergent when torn and hardly adhered to the hand. Further, the leakage and outflow of the detergent at the time of breaking were measured by the above-mentioned methods, and it was 0.00 g.

Example 2 <Detergent for sheet-like clothing> A dough-like mixture having the following composition was obtained. That is, Nippon Shokubai Kagaku Kogyo Co., Ltd. SOFTANOL 70 [polyoxyethylene (7) alkyl (C ₁₂ -C ₁₄₎ ether] 5 wt%,
Mitsubishi Chemical Nonidet R-7 [polyoxyethylene (7) alkyl (C ₁₂ -C ₁₅₎ ether] 5 wt% of polyoxyethylene (6) alkyl _{(C 12 / C 14 / C} 16 =
70/25/5) 0.4% by weight of ether, 3.6% by weight of coconut oil fatty acid sodium, and neutralization of alkylbenzenesulfonic acid (alkene L) manufactured by Nisseki Detergent Co., Ltd. as 48% NaOH as LAS-Na. post dry ones 10 wt%, aS-Na [manufactured by Mitsubishi Chemical Corp. Dobanol 25 Sarueto (C ₁₂ -C ₁₅ sulfates)] 2% by weight, Toyo Soda Co., Ltd. A4 type zeolite 15.6 wt%, As a porous silica compound, 3.6% by weight of "Tixorex 25" manufactured by Kofuran Chemical Co., Ltd., crystalline silicate (SK Hoechst Co., Ltd.)
S-6) 6% by weight, 4.4% by weight of sodium silicate No. 1, 8% by weight of soda ash manufactured by Toyo Soda Co., Ltd., 0.8% by weight of Na salt of acrylic acid-maleic acid copolymer (Mw = 60000) %, Sodium polyacrylate (Mw = 20,000)
2.4% by weight, 1.2% by weight of polyacetal carboxylate Na salt (Mw = 20,000), 22.4% by weight of polyethylene glycol (Mw = 6000), 4.6% by weight of potassium carbonate, 1.4% by weight of sodium sulfate 1: 1 mixture of "API-21" manufactured by Showa Denko KK and "Cellzyme 1.0T" manufactured by Novo Industries as an enzyme.
6% by weight, "Cinopearl CBS-X" manufactured by Ciba Geigy
0.4% by weight and the balance water.

Prepared in the same manner as in Example 1 between two stainless steel rollers (same as those used in Example 1) having a diameter of 50 mm according to Example 3 of JP-A-8-127919. A pair of 15 cm wide and 25 m long laminated bases in which a nonwoven fabric having a basis weight of 15 g / m ² and “Hiselon” (a water-soluble film) manufactured by Nippon Synthetic Chemical Industry Co., Ltd. are sandwiched, and the roller rotates (rotation speed 1 m / Minute)
The above-prepared mixture was constantly supplied between two laminated substrates to obtain a 10-m sheet-like clothing detergent. The average area density of this sheet was 0.053 g / cm ² , and the average thickness was 1.3 mm. This 20 m was wound on a cardboard roll having a width of 11 cm and a diameter of 2.5 cm, and was loaded into a box with a cutter. At this time, the sheet can be of any length,
It was easily torn using a metal cutting machine mounted on the top of the box, and there was almost no leakage or outflow of detergent when torn, and it did not adhere to hands. Further, the leakage and outflow of the detergent at the time of breaking were measured by the above-mentioned methods, and were 0.11 g.

Example 3 <Detergent for sheet-like clothing> Toyo Soda Co., Ltd. was added to 30 g of the dough prepared in Example 1.
5 g of A4 zeolite made by Industria Prodotchi Stamperch Torino (IndustriaProdotti
Noodle Making Machine made by Stampati TORINO, Inc. "titania
)) (Registered trademark) to produce thin layers of less than 1 mm. Next, 0.8 g of a fiber (3 mm in length) prepared according to Example 2 of JP-A-8-3848 is spread uniformly on the front and back surfaces to form a 17 cm × 8.5 cm sheet-like clothing detergent. Two were obtained. Repeat this operation 20 times,
Forty sheet detergents were obtained. One sheet of this sheet detergent had a thickness of 1.0 mm and an areal density of 0.13 g / cm ² . After that, all the sheet detergents were folded in half and folded in a zigzag pattern, and then 10 cm long, 10 cm wide and 10 cm high.
cm paper box. 6cm × 4.5 at the top of the box
When a sheet-shaped detergent was taken out by making a rectangular hole of cm, a part of the sheet-shaped detergent was then pulled out of the box. This operation could be performed 15 times continuously. This sheet-like detergent could be broken by hand, and there was no leakage or outflow of the detergent at the time of tearing, and almost no detergent adhered to the hand. Further, the leakage and outflow of the detergent after half-cutting with scissors was measured by the above-mentioned method and found to be 0.01 g.

[Results] As is clear from the above results,
Examples 1 to 3 in which a cleaning composition was sandwiched between water-soluble substrates
In the sheet-like laundry product, the content is hardly scattered at the time of use or breakage, and it is easy to arbitrarily adjust the usage amount.
Further, since the laundry product is in the form of a sheet and has no leakage of contents, etc., a plurality of sheets are folded and loaded into the container in an alternately engaged state, or the sheet is loaded into the container in the form of a roll. It is also clear that the convenience in use is very good.

[Brief description of the drawings]

FIG. 1 is a triangular coordinate system showing the ratio of the total organic substance content (a) to the total inorganic substance content (b) and the water content (c) in the detergent composition used in the present invention.

FIG. 2 is a schematic view showing an example of the sheet-like laundry product of the present invention.

FIG. 3 is a schematic view showing another example of the sheet-like laundry product of the present invention.

FIG. 4 is a schematic view showing an example of the laundry product of the present invention.

[Explanation of symbols]

 1: composition layer 2, 2 ': water-soluble nonwoven fabric 21: composition layer 22, 22': water-soluble nonwoven fabric 23, 23 ': water-soluble film 31: sheet-like laundry product 32: paper container

Continuing on the front page (72) Inventor Toshiki Nishi 1334 Minato, Wakayama-shi, Wakayama Prefecture, Kao Co., Ltd. (72) Inventor Shinji Nakao 1334 Minato, Wakayama-shi, Wakayama Prefecture, Kao Co., Ltd.

Claims (9)

[Claims] 1. A dough of a detergent composition for clothing.
h) A thin layer of a material having a thickness of less than 5 mm, and a water-soluble substrate disposed on both sides of the thin layer as means for maintaining the thin layer, and having an area density of 0.005 to 1 0.0g
/ Cm ² , the sheet-like laundry product having a loss of the composition from the thin layer per 200 cm ² at break of less than 0.8 g. 2. The sheet-like laundry product according to claim 1, wherein the thin layer has adhesiveness on the surface. 3. The ratio of the total organic substance content (a) to the total inorganic substance content (b) and the water content (c) in the detergent composition forming the thin layer is represented by a triangular coordinate point shown in FIG. A [(a) 6
8 / (b) 17 / (c) 15], point B [(a) 80 /
(B) 20 / (c) 0], point C [(a) 10 / (b) 9
0 / (c) 0] and point D [(a) 8.5 / (b) 76.
5 / (c) 15].
Item for sheet-like laundry 4. The water-soluble substrate according to claim 1, wherein the water-soluble substrate dissolves within 10 minutes with respect to 1 liter of water at 50 ° C. and 1 liter of water at 50 ° C. comprising water-soluble polymer fibers.
A woven or nonwoven fabric that dissolves in 0 minutes or a laminated substrate that dissolves in 1 liter of water at 50 ° C. composed of a water-soluble film and a woven or nonwoven fabric made of a water-soluble polymer fiber within 10 minutes Any one of claims 1 to 3
Item. 5. The method according to claim 1, wherein the water-soluble film or / and the water-soluble polymer fiber are polyvinyl alcohol, polyvinylpyrrolidone, pullulan, polyacrylamide, polyacrylic acid, polymethacrylic acid, polyitaconic acid, polyethylene oxide, polyvinyl methylene ether, xanthan gum. The sheet-like laundry product according to any one of claims 1 to 4, comprising one or more selected from guar gum, collagen, carboxymethylcellulose, hydroxypropylcellulose, and hydroxyethylcellulose. 6. An area having an area of 9 cm ² or more.
A sheet-like laundry product according to any one of the preceding claims. 7. The sheet-like laundry product according to claim 1, wherein the thin layer contains a cleaning composition in an amount of 1/5 to 1 time use. 8. A laundry product obtained by laminating a plurality of the sheet-like laundry products according to any one of claims 1 to 7 in a zigzag pattern and loading them in a predetermined container. 9. A sheet-like laundry product according to claim 1, which is at least 4 cm wide and 30 cm long in a predetermined container.
A laundry product loaded in a roll as described above.