JP3507286B2 - Sheet laundry products - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laundry product in which the amount used is easy to adjust in actual use and has excellent convenience, and leakage or scattering of contents is greatly reduced. Regarding the agent.

[0002]

2. Description of the Related Art Most of the softening agent compositions for fibers which have been commercially available in the past are liquid ones containing 2 to 30% by weight of a softening activation base. Also, some flexible base materials are pulverized or granulated,
Alternatively, attempts have been made to make tablets.

However, these conventional methods have a problem of leakage of contents in the case of liquid or powder, which is inconvenient in weighing. In addition, the tablet-like type has a problem that it is necessary to directly touch the softening composition, and the softening composition or its raw material remains on the hand. In particular, there is a problem when the usage amount is arbitrarily adjusted. In other words, it takes a lot of effort to break tablets by hand, and moreover, the composition of the product is directly touched by hand, and when broken, powder or the like may be scattered or leaked. This is not preferable because it requires rinsing and cleaning, and is not suitable for changing the usage amount substantially in an analog manner. A type in which a water-insoluble non-woven fabric is impregnated with a soft base material is known, but this acts on high heat during drying in the use of a dryer, and it may affect the solubility in the washing process. This is different from the delicate invention.

[0004]

Means for Solving the Problems The inventors of the present invention have made extensive studies to obtain a laundry product which is excellent in convenience and free from scattering and leakage of contents. As a result, by providing a means for maintaining a thin layer containing a fiber softening agent, compared to the conventional form of impregnating a water-insoluble non-woven fabric and putting it in a dryer at the time of drying, when touched by hand There is no need to worry about the softening agent touching your hands, and it is easy to use because there is no outflow of contents like a tablet type when it breaks when adjusting the usage amount, and it is necessary to remove the sheet after rinsing and drying. It has been found that a laundry product having a simple property can be obtained, and the present invention has been completed.

That is, the present invention provides a sheet-like laundry product comprising a thin layer containing a fiber softening agent and a means for maintaining the thin layer (hereinafter also referred to as a maintaining means). is there.

The sheet-like laundry product of the present invention has a thin layer containing a fiber softening agent and a means for maintaining the thin layer, and the thin layer may be formed continuously or discontinuously. Also, the maintaining means may be arranged either outside or inside the thin layer. An example of the sheet-like laundry product of the present invention is shown in FIG. In FIG. 1, 1 is a thin layer containing a fiber softening agent, and 2 and 2 ′ are maintenance means. In this example, water-soluble sheets arranged on both sides of the thin layer are used as the maintenance means.

In the present invention, the means for maintaining a 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 adhesion of the thin layer, damage due to contact is reduced and the shape of the thin layer is maintained, and by suppressing the scattering of powder or particles from the thin layer, the shape of the thin layer is suppressed. Is a means for maintaining, and may have a function other than this. In the present invention, it is particularly preferable to use a water-soluble sheet as the maintaining means.

[Water-Soluble Sheet] First, the water-soluble sheet used in the present invention will be described. The water-soluble sheet used in the present invention is preferably a water-soluble film, a non-woven fabric or woven fabric composed of water-soluble polymer fibers, or a laminated sheet of non-woven fabric or woven fabric composed of water-soluble film and water-soluble polymer fibers. These water-soluble sheets are composed of water-soluble polymers. Specifically, polyvinyl alcohol, polyvinylpyrrolidone, pullulan, polyacrylamide, polyacrylic acid, polymethacrylic acid, polyitaconic acid, polyethylene oxide, polyvinyl methylene ether, xanthan gum, guar gum, collagen, carboxymethyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, etc. Is particularly preferable, and polyvinyl alcohol or polyvinyl alcohol modified with maleic acid or itaconic acid is particularly preferable.

Among such water-soluble sheets, water-soluble nonwoven fabrics are described in Japanese Patent Application Laid-Open Nos. 8-127919, 8-3848 and 5-321105.
JP-A-7-42019, JP-A-3-86530, JP-A-3-279410, JP-A-3-19
Non-woven fabrics composed of water-soluble polyvinyl alcohol fibers disclosed in JP-A-9408, JP-A-2-112406, and JP-A-61-175862 are mentioned. As the woven cloth, those obtained from the various water-soluble polymer fibers described above can be used. The diameter of the water-soluble polymer fibers constituting the non-woven fabric or the woven fabric is preferably 5 to 200 μm, and particularly preferably 5 to 50 μm.

Examples of water-soluble films include US Pat. No. 3,186,869, US Pat. No. 3,198740,
US Patent No. 3280037, US Patent No. 332267
4, No. 48-33837, 48-883.
No. 43, No. 50-140958, No. 51-1.
No. 50, No. 52-77961, No. 55-15.
1853, 57-1851, and JP-A-59
No. 180085, No. 61-57700, No. 61-97348, No. 61-98752,
No. 61-200146, No. 61-200147, No. 61-204254, No. 61-2280.
57, 62-57492, 62-15.
6112, 62-275145, 63.
-8496, 63-8497, 63-
12466, 63-12467 and 64
No. 29408, No. 64-29438, JP-A No. 2-60906, No. 2-108534,
No. 2-163149, No. 3-59059,
No. 4-53900, No. 4-57989, No. 4-63899, No. 4-72180, No. 4
No. 147000, No. 4-164998, No. 4-1.
Examples of the films include those disclosed in Japanese Patent Nos. 74792 and 4-202600.

As the water-soluble sheet of the present invention, a laminated sheet composed of a non-woven fabric or woven fabric made of the above-mentioned water-soluble polymer fibers and a water-soluble film can be used. As a method for obtaining such a laminated sheet, a water-soluble film is laminated on one surface of a non-woven fabric or the like and bonded by heat sealing or the like, or a water-soluble polymer is applied to one surface of the non-woven fabric or the like to form a film. There is a method.
When such a laminated sheet is used, it is preferable that the water-soluble film is arranged so as to be in contact with the thin layer containing the fiber softening agent, and the outside is a nonwoven fabric or the like. A sheet-like laundry product of the present invention using such a laminated sheet is shown in FIG. FIG. 2 shows a sheet-like laundry product comprising a thin layer 21 and a laminated sheet which is a maintenance means. Water-soluble films 23 and 23 ′ of the laminated sheet are arranged so as to be in contact with the thin layer 21, and a water-soluble nonwoven fabric is provided on the outside thereof. 22 and 22 'are arranged.

The water-soluble sheet preferable in the above examples is a non-woven fabric or a woven fabric made of water-soluble polymer fibers because it is easy to tear when adjusting the amount used, and particularly polyvinyl alcohol, maleic acid or itacone. Nonwovens or wovens obtained using fibers of acid-modified polyvinyl alcohol are preferred. Further, a water-soluble laminated sheet in which a water-soluble film made of polyvinyl alcohol or polyvinyl alcohol modified with maleic acid or itaconic acid is laminated on the inside of a non-woven fabric or woven fabric made of this water-soluble polymer fiber is also preferable.

The water-soluble sheet used in the present invention is 50
Those that dissolve in water at ℃ are preferred. Here, “dissolve” means that 0.5 g of the water-soluble sheet dissolves in 1 liter of water at 50 ° C. within 10 minutes, preferably within 7 minutes, and further sieve of No. 8.6 (Pharmacopoeia: 2000 μm) It means the state that there is no residue.

[Softening Agent for Fiber] As the softening agent for fiber of the present invention, a known softening agent having a quaternary ammonium salt as a softening base can be used. Particularly, a di-long-chain alkyl type quaternary ammonium salt is preferable, and -COO-, -OCO-, -NHCO-, -CO in the alkyl group.
It may contain a linking group such as NH-. In addition, as an optional component, a fragrance, a dye, a silicone compound,
It may contain an antibacterial agent, a solvent, water-soluble salts and the like.

The examples of the soft base material which can be used in the present invention are shown below. (1) A novel quaternary ammonium salt represented by the general formula (I).

[0016]

[Chemical 1]

(In the formula, R ¹ represents a linear or branched alkyl group or alkenyl group having ¹ to 35 carbon atoms, R ² and R ³ are the same or different, and H or saturated or C 8 to 36 carbon atoms; An acyl group derived from an unsaturated fatty acid is shown, and R ⁴ has 1 to 4 carbon atoms.
Is an alkyl group or a hydroxyalkyl group, A is a linear or branched alkylene group having 1 to 10 carbon atoms which may be substituted with a hydroxyl group, and Y and Z are the same or different and have 2 to 3 carbon atoms. Represents a linear or branched alkylene group, n
Y's and m Z's may be the same or different. n
And m are the same or different and are numbers of 1 to 20 which represent the average number of moles of alkylene oxide added, and X represents an anionic group. (2) A quaternary ammonium salt represented by the following general formula (II).

[0018]

[Chemical 2]

[In the formula, R ^{1 represents a} linear or branched alkyl group or alkenyl group having 20 to 44 carbon atoms. ^{R 2, R 3, R 4} : identical or different and represent an alkyl group or hydroxyalkyl group having 1 to 5 carbon atoms. Z: An alkylene group having 2 to 3 carbon atoms is shown, and the alkylene group having 2 carbon atoms and the alkylene group having 3 carbon atoms may be mixed. m: Indicates a number from 0 to 20. n: shows the number of 1-6. X ⁻ : Indicates an anionic group. As the quaternary ammonium salt represented by the general formula (II), a quaternary ammonium salt represented by the following general formula (II-1) is preferable.

[0020]

[Chemical 3]

[0021] ^{wherein, R 2, R 3, R} 4, n, X -: The meanings of the. (3) A compound represented by the general formula (III), a general formula (IV)
And a compound represented by the general formula (V), and at least one selected from the group consisting of acid neutralized products and quaternized products of these compounds.

[0022]

[Chemical 4]

[In the formula, R ² represents an alkyl group having 1 to 4 carbon atoms or a hydroxyalkyl group. R ^3, R ^4: the same or different, -COO - bond or -CONH-
12 straight or branched chain carbon atoms, which may be interrupted by a bond
~ 32 alkyl or alkenyl groups are shown. ]

[0024]

[Chemical 5]

[In the formula, R ⁵ and R ^{6 are the} same or different and each represents an alkyl group having 1 to 4 carbon atoms or a hydroxyalkyl group. R ⁷ and R ^{8 are the} same or different and have a straight or branched chain carbon number of 12
~ 32 alkyl or alkenyl groups are shown. p: shows the number of 1-10. ]

[0026]

[Chemical 6]

[In the formula, R ⁹ may be interrupted by a -COO- bond or a -CONH- bond,
A linear or branched alkyl group or alkenyl group having 12 to 32 carbon atoms is shown. R ¹⁰ : Shows a linear or branched alkyl group or alkenyl group having 11 to 31 carbon atoms. Further, it is preferable to add a plasticizer to the softening agent for fibers of the present invention for the purpose of imparting softness when processed into a sheet. Examples of usable plasticity modifiers include polyhydric alcohols such as glycerin, sorbitol, and ethylene glycol for the purpose of imparting softness, and when the base is too soft and easily leaks from between water-soluble substrates. For the purpose of imparting hardness, higher fatty acid having 8 to 24 carbon atoms, higher alcohol having 8 to 24 carbon atoms, molecular weight 10
Examples thereof include 00-100,000 methyl cellulose and carboxymethyl cellulose. Furthermore, the molecular weight of 200-
60,000 polyethylene glycol, molecular weight 200
A high molecular weight compound such as dextrin of 100,000 may be added as a low molecular weight compound for the purpose of imparting softness, and a high molecular weight compound may be added for the purpose of imparting hardness.

[Sheet-like Laundry Product] The method for preparing the sheet-like laundry product of the present invention is not particularly limited, but after the softening agent is preliminarily formed into a sheet (thin layer), the softening agent is applied to both surfaces thereof. A method of attaching at least one or more water-soluble sheets, while supplying a dough-shaped, powdered or granular softening agent between two or more water-soluble sheets that move by rotation of rollers, etc. , A method of compression molding with the same or different rollers, a dough-like softening agent,
Examples include a method in which the water-soluble sheet having at least one layer spread is applied, and the water-soluble sheet having at least one layer is attached to the applied softening agent. In the case of powder or granules, the softening agent and the carrier are granulated beforehand, and the adhesiveness is used to form a sheet between the water-soluble sheets by using a compressive force of a roller or the like. The method or the above may be formed into a sheet by binding between powders or particles with a water-soluble organic substance such as the plasticizer adjusting agent,
The sheet may be formed in a state of being taken into the dough-shaped material. Here, the “dough” refers to a kneaded product of the powder composition and a small amount of liquid, and the liquid includes a liquid which is liquefied by heating, and may be the plasticity adjusting agent described above. Many dough-shaped thin layers containing the fiber softening agent of the present invention have adhesiveness on the surface. Also, in the case of a powder or granular composition, it can be prepared by a method such as compression molding or laminating after uniformly placing a powdered fiber softening agent between water-soluble sheets or on a water-soluble sheet. .

It is also possible to form a layer by impregnating a liquid composition with a water-soluble non-woven fabric or a water-soluble woven fabric as a means for maintaining a thin layer and supporting the composition on the non-woven fabric or woven fabric. . In this case, it is also possible to impregnate the nonwoven fabric or the like with the liquid component in the fiber softening agent and to sprinkle the surface of the nonwoven fabric or the like after impregnation with the other powder component. Further, in the present invention, when the thin layer containing the fiber softening agent is dough-like, it is possible to reduce the tackiness of the dough surface by sprinkling particles of the water-soluble substance or water-soluble fibers on the surface thereof. Yes, such maintenance means can also be adopted.

Particularly when preparing a dough-like product, by adjusting the amount of the above-mentioned soft base and the amount of the plasticity adjusting agent,
The penetration hardness of the dough-like material at 25 ° C is 0.1 to 10 kg.
/ Cm ² is preferable. More preferably 0.3
~ 8 kg / cm ² . Here, the penetration hardness of the dough-like material is measured by the following method. [Measurement Method of Intrusion Hardness] A total of 1000 g of each component of the fiber softening agent and a dye (red No. 106) for a marker are charged in a Dalton universal mixing stirrer (type 5DM-03-r).
After adjusting the temperature to about 25 ° C., first, the mixture is kneaded at a low speed (about 100 rpm) for 1 minute and then at a high speed (about 200 rpm).
The b value of the kneaded product is measured using a colorimeter (CR-300) manufactured by Minolta Co., Ltd., and kneading is performed at high speed until the b value becomes constant to obtain a uniform fiber softening agent. FUDOH RH
Using a rheometer of EO METER (RT-2010J-CW), the FUDOH rheometer dedicated adapter (bottom area 1
cm ² ), the stress when the adapter penetrates into the fiber softening agent at a penetration rate of 30 cm / min for 20 mm is measured, and this is defined as the penetration hardness.

The sheet-like laundry product of the present invention preferably has a thickness of 0.05 to 4 mm from the viewpoint of ease of use. A sheet-like laundry product having a thickness of 4 mm or less can be easily torn. Further, when the thickness is 0.05 mm or more, a sufficient amount of the fiber softening agent can be filled. A more preferable thickness is 0.25 to 2 mm.

The sheet-like laundry product of the present invention preferably has an areal density of 0.005 to 1.0 g / cm ² . If the area density is within this range, the filling amount of the fiber softening agent will be sufficient, and good solubility will be obtained. More preferable areal density is 0.02 g / cm ^{2 to} 0.5 g / c
m ² .

The sheet-like laundry product of the present invention has a flow-off amount of the fiber softening agent from the thin layer of less than 0.8 g per 200 cm ² at the time of breaking. Here, the "discharge amount" is
Temperature 20 ° C, humidity 60% H. In the room of
After cutting the center part (half position in the longitudinal direction) of the sheet-like laundry product prepared to have a size of cm × 20 cm with commercially available scissors, half the uncut side is fixed with a clip, and both are cut. While hanging the cut part down for 30 minutes, the washed or leaked fiber softening agent was received on the plastic tray, and the cut sheet was tapped three times with the glass rod. It means the weight of (fiber softening agent). It is more desirable that the amount of the washout is small, and the content of the sheet-like laundry product is not scattered or leaked when the sheet-like laundry product is broken in actual use.

Since the laundry product of the present invention is in the form of a sheet and does not leak or flow out of the contents when it is broken or used, various filling methods and usage methods are possible. For example, perforating a sheet-like laundry product with perforations to make it easier to break, printing a design or letters to improve the appearance, or printing the usage instructions or precautions for use. To make it easier for users to recognize.
Moreover, although it is easy to form a continuous layer from the manufacturing process of the thin layer, it is of course possible to form a discontinuous thin layer.

By loading the sheet-like laundry product of the present invention in an appropriate container, a laundry product with higher convenience can be obtained. For example, prepare a plurality of sheet-like laundry products of the present invention, fold a portion of each sheet,
By laminating each sheet in a zigzag shape and loading it in a predetermined container, it is possible to obtain a laundry product in a container in which the sheets can be continuously taken out. Such a laundry product is shown in FIG. As shown in FIG. 3A, the sheets 31 folded in half are stacked in a zigzag shape, and the sheets are loaded in a predetermined container, for example, the paper box 32, to obtain a laundry product in which the sheets can be continuously taken out. In this case, the area of the sheet is preferably 9cm ² or more, more preferably 40~500cm ^2. Further, it is possible to obtain a laundry product in which 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 is rolled into a predetermined container. These product forms are preferred because of their simplicity and ease of adjusting the amount used. Especially in the case of rolls, it is easier to use by attaching a metal and / or resin sheet cutting tool to the loading container (paper box, etc.) It is also possible to artificially or mechanically take out a sheet of a certain size from the inside of the roll by making perforations. Of course, the sheet may be graduated to display the usage amount and the like.

As a simpler filling mode, a sheet-like laundry product containing 1/5 to 1/1 of the amount of the softening active substance per single use may be packed in the loading container or may not be aligned. Also included are forms. In this form, it is possible to store the broken pieces in the original container for partial use.

[0037]

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 used in the examples will be described below in advance. [Measurement method of flow-out and leakage amount when broken] Temperature 20 ° C, humidity 60% R.V. H. In room 10c
After half-cutting the central portion (half the position in the longitudinal direction) of the sheet prepared to have a size of m × 20 cm with commercially available scissors, the non-cut side 5 mm portion is fixed with a clip, and both cut portions are cut. While hanging down for 30 minutes, the washed or leaked fiber softening agent is received on a plastic tray, and the cutting sheet is tapped three times with a glass rod. I asked.

Example 1 42% by weight of a softening base represented by the following formula (iv), dihydrogenated tallow alkyldimethylammonium chloride 3
A dough-like composition (entry hardness 0.7 kg / cm ² ) was prepared by mixing 5% by weight, 11% by weight of glycerin, 11% by weight of propylene glycol and 1% by weight of d-limonene.

[0040]

[Chemical 7]

Next, a non-woven fabric having a basis weight of about 25 g / m ² prepared according to Example 2 of Japanese Examined Patent Publication No. 3-25539 and "Hi-Selon" (water-soluble film) manufactured by Nippon Synthetic Chemical Industry Co., Ltd. were laminated to form 10 cm. Two x20 cm laminated sheets were prepared. Next, one laminated sheet was laid on a steel plate of 13 cm × 22 cm with “Hi-Selon” facing upward, and the above composition was spread evenly on it for 7 g, and another laminated sheet was placed on it. Spread and another 13 cm on it
A x22 cm steel plate was placed. This is AIKOEngine
Using a press made by eeering, a load of 400 kgf was applied to 15 places on the steel plate to obtain a sheet-like softening agent.
This operation was repeated 50 times to obtain 50 sheet-like softeners containing 7 g of the softener in a 10 cm × 20 cm sheet. The average areal density of this sheet-like softener for clothing is 0.
It was 044 g / cm ² , and the average thickness was 0.9 mm.
After this, all are folded in half and overlapped with each other as shown in FIG.
× It was loaded in a paper box having a height of 9 cm. 6 cm x on top of the box
It was confirmed that a 4.5 cm rectangular hole was opened and the sheet-like softening agent could be continuously taken out. Further, this sheet could be torn by hand, and when it was torn, there was no leakage or outflow of the softening agent, and it hardly adhered to the hand. Furthermore, when the leakage of the softening agent at the time of breakage and the outflow amount were measured by the above method,
It was 0.00 g.

Example 2 Softening bases (v), (vi), (vii) and (viii) of Table 1
16% by weight of (v), 16% by weight of (vi), (vii)
18% by weight of (viii) and 6% by weight of 30 mol ethylene oxide adduct of isotridecyl alcohol, 3% by weight of 50 mol ethylene oxide adduct of oleylamine, 3% by weight of hardened beef tallow fatty acid, stearic acid 2 mol% of an esterified product of 2 mol and 1 mol of pentaerythritol, polyethylene glycol (average molecular weight 3,
000) 8% by weight, glycerin 9% by weight, Basic Blue7
A dough-like composition obtained by mixing 0.001% by weight, 0.001% by weight of Basic Yellow 28, 0.003% by weight of denatonium benzoate and the balance of water (entry hardness 1.1 kg /
cm ² ) was prepared.

[0043]

[Table 1]

Next, a nonwoven fabric having a basis weight of about 25 g / m ² prepared according to Example 2 of JP-A-8-3848 was prepared.
Two pieces cut into 0 cm x 20 cm were prepared.

Next, one end of this nonwoven fabric is sandwiched between two stainless steel rollers (made by Sanriki Seisakusho) having a diameter of 50 mm designed to rotate in mutually opposite directions, and the roller is manually operated. While rotating, 7 g of the above composition was inserted between two nonwoven fabrics to obtain a sheet-like softening agent for clothing. Repeat this operation 50 times, 10 cm x 2
Fifty sheet softening agents containing 7 g of the fiber softening agent composition in a 0 cm substrate were obtained. The softening agent for sheet-like clothing had an average areal density of 0.047 g / cm ² and an average thickness of 1.2 mm. After this, all were folded in two and overlapped with each other as shown in FIG. 3 and then loaded into a paper box of 12 cm in length × 13 cm in width × 9 cm in height. A 6 cm × 4.5 cm rectangular hole was opened in the upper part of the box and one sheet-shaped softening agent was taken out, and a part of the next sheet-shaped softening agent was pulled out of the box. This operation could be performed 47 times in succession. This confirmed that the sheet can be easily taken out without putting hands or fingers in the holes. Further, this sheet was torn by hand, and when it was torn, the softening agent did not leak or flow out, and hardly adhered to the hand. Furthermore, when the leak and the outflow amount of the softening agent at the time of breaking were measured by the above-mentioned method, it was 0.01 g.
Met.

Example 3 Regarding the softening bases represented by the softening bases (ix), (x), (xi) and (xii) in Table 2, 16% by weight of (ix),
16% by weight of (x), 18% by weight of (xi) and 18% by weight of (xii), 6% by weight of 21 mol ethylene oxide adduct of lauryl alcohol, 3% by weight of 50 mol ester oxide adduct of oleylamine, stearin Acid 3% by weight, Stearic acid 2 mol and Pentaerythritol 1 mol Esterified product 2% by weight, Polyethylene glycol (average molecular weight 1200), 8% by weight, Glycerin 9% by weight, Acid Blue7 0.001% by weight, Basic Yellow36
0.001% by weight, Liquitint® Yellow LP
A dough-like composition prepared by mixing 0.001% by weight, BHT 0.003% by weight, and the balance water (entry hardness 0.5 kg /
cm ² ) was prepared.

[0047]

[Table 2]

Between two stainless steel rollers having the diameter of 50 mm (the same as those used in Example 1), a basis weight of 15 g / m ² prepared according to Example 3 of JP-A-8-127919 was used. Width of 15 layers of non-woven fabric and "Hi-Selon" (water-soluble film) manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
A pair of laminated substrates having a length of 25 cm and a length of 25 cm are sandwiched, and while the rollers are rotating (rotation speed is 1 m / min), the mixture prepared above is constantly supplied between the two laminated substrates, and 10
m sheet-like softening agent was obtained. 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 loaded into a box with a cutter.
At this time, the sheet had an arbitrary length and could be easily torn using a metal cutting machine attached to the upper part of the box, and when it was torn, there was almost no leakage or outflow of the softening agent and it did not adhere to the hand. . Further, the amount of the softening agent leaking and flowing out at the time of breakage was measured by the above method, and was 0.11 g.

[Results] As is clear from the above results,
The sheet-like laundry products of Examples 1 to 3 in which the softening agent is sandwiched between the water-soluble sheets have almost no scattering of the contents at the time of use or break, and the amount of use can be easily adjusted arbitrarily. Further, since the laundry product is in the form of a sheet and has no leakage of powder of the contents, etc., a plurality of sheets are folded and loaded into the container while being alternately engaged, or the sheet is rolled and loaded into the container. Therefore, it is clear that the convenience in use is very good.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a sheet-like laundry product of the present invention.

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

FIG. 3 is a schematic view showing an example of a laundry product of the present invention.

[Explanation of symbols]

1: Thin layer containing fiber softening agent 2, 2 ': Water-soluble non-woven fabric 21: Thin layer containing fiber softening agent 22, 22 ': Water-soluble non-woven fabric 23, 23 ': Water-soluble film 31: Sheet-like laundry product 32: Paper container

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshinori Nishi 1334 Kao Co., Ltd., Wakayama City, Wakayama Prefecture Kao Co., Ltd. (72) Inventor Shinji Nakao 1334 Minato Minato, Wakayama City, Wakayama Prefecture (56) Ref. JP-A-6-228883 (JP, A) JP-A-5-132864 (JP, A) JP-A-2-228398 (JP, A) JP-A-64-2800 (JP, A) JP-A-2-238100 (JP , A) Japanese Unexamined Patent Publication No. 5-156300 (JP, A) Actually open 2-33239 (JP, U) Actually open 57-154747 (JP, U) Actually open 61-73642 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) D06M 13/00-13/535 C11D 1/00-19/00

Claims (10)

(57) [Claims] 1. A dough having a sticky surface
h) comprising a thin layer containing a fiber softening agent and water-soluble sheets arranged on both sides of the thin layer , and having a thickness
Is 0.05 to 4 mm, and the area density is 0.005 to 0.25.
A sheet-like laundry product having a g / cm ² . 2. The flow-off amount of the fiber softening agent from the thin layer per 200 cm ² at break is less than 0.8 g.
The sheet-like laundry product described. 3. The penetration hardness of the dough-like material at 25 ° C.
According to claim 1, wherein but is 0.1 to 10 / cm ²
Sheet-like laundry products. 4. The water-soluble sheet is a water-soluble film in which 0.5 g dissolves in 1 liter of water at 50 ° C. within 10 minutes, and 1 liter of water at 50 ° C. made of water-soluble polymer fibers. A woven or non-woven fabric, in which 0.5 g is dissolved within 10 minutes, or a woven or non-woven fabric made of a water-soluble film and a water-soluble polymer fiber, 0.5 g is 10 The sheet-like laundry product according to any one of claims 1 to 3, which is a laminated sheet that dissolves within minutes. 5. The water-soluble film or / and the water-soluble polymer fiber is 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 claim 4, comprising one or more selected from guar gum, collagen, carboxymethyl cellulose, hydroxypropyl cellulose and hydroxyethyl cellulose. 6. A laminate comprising the water-soluble sheet, which comprises a water-soluble film and a woven or non-woven fabric in which 0.5 g of water-soluble polymer fiber dissolves in 1 liter of water at 50 ° C. within 10 minutes. a sheet, according to claim 4 is arranged so that said thin layer and said water-soluble film is in contact or
The sheet-like laundry product according to item 5 . Wherein said thin layer is 1 / 5th to 1 times the sheet-shaped laundry products according to any one of claims 1-6, containing the amount of softening agent. 8. area is 9cm ² or claim 1-7
The sheet-like laundry product according to any one of 1. 9. A laundry product obtained by stacking a plurality of sheet-like laundry products according to any one of claims 1 to 8 in a zigzag shape and loading them in a predetermined container. 10. The method of claim 1-8 any one of claims sheet laundry products 4cm wide than a predetermined container, length 30c
A laundry product that is loaded in rolls of m or more.